CN-122007214-A - Sheet bending device based on flexible pressed body and use method
Abstract
A sheet bending device based on a flexible pressing body and a use method thereof are provided, and the sheet bending device comprises a sheet bending device body provided with a frame (2) and a forming template (3), and a thrust telescopic cylinder group arranged between the frame (2) and the forming template (3), wherein the sheet bending device body is used for clamping and anastomosing bending and forming the sheet, the thrust telescopic cylinder group is used for realizing follow-up swinging state of the forming template (3), realizing pressing clamping openings of the bent and formed sheet in a stable state, and solving the technical problem of fixedly connecting the thrust telescopic cylinder with the frame, thereby improving the bending and forming precision of the sheet.
Inventors
- WU CHENGGE
- ZHANG RONGQUAN
- LI MEISHUN
- ZHANG XIAOMING
Assignees
- 张荣泉
Dates
- Publication Date
- 20260512
- Application Date
- 20260410
Claims (10)
- 1. A sheet bending and forming device based on a flexible pressed body is characterized by comprising a sheet bending and forming device body with a frame (2) and a forming template (3), and a thrust telescopic cylinder group arranged between the frame (2) and the forming template (3).
- 2. The flexible press-based sheet bending apparatus as set forth in claim 1, wherein the sheet bending apparatus body and the thrust telescoping cylinder group are coupled to each other in such a manner that the press nip between the bent and formed sheets is in a stable state.
- 3. The flexible pressed body-based sheet bending apparatus according to claim 2, wherein the thrust telescoping cylinder group is coupled to the sheet bending apparatus body in a follow-up swing state.
- 4. The flexible pressed body-based sheet bending and forming device and the use method thereof according to claim 1, wherein the sheet bending and forming device body is provided with a movable beam (5), a locking telescopic cylinder (6), a pressing leather bag (7), a case (8) and a positioning plate (9), Or the thrust telescopic cylinder group is provided to include a side thrust telescopic cylinder (4) and a center thrust telescopic cylinder (91), Or, a first accessory device is also included and is arranged on the sheet bending device body, and the first accessory device is arranged as a stand (1).
- 5. The flexible compact-based sheet bending molding apparatus as set forth in claim 4, wherein a frame (2) is provided on the machine base (1), a side thrust telescopic cylinder (4), a center thrust telescopic cylinder (91) and a movable beam (5) are provided on the frame (2) respectively, a locking telescopic cylinder (6) is provided between the movable beam (5) and the frame (2), a case (8) is provided on the movable beam (5) and a positioning plate (9) is provided on the case (8), a molding die plate (3) is provided between the positioning plate (9) and the side thrust telescopic cylinder (4) and the center thrust telescopic cylinder (91), and a pressing leather bag (7) is provided between the molding die plate (3) and the case (8).
- 6. The flexible pressed body-based sheet bending apparatus according to claim 5, wherein the frame (2) is provided to include a seat portion I (21), a seat portion II (22), a column portion I (23) and a column portion II (24) and one side portion of the seat portion I (21) is provided to be coupled with a lower end of the column portion I (23) in a sleeved manner, the other side portion of the seat portion I (21) is provided to be coupled with a lower end of the column portion II (24) in a sleeved manner and one side of a lower end face of the seat portion I (21) is provided to be coupled with an upper end face of the column portion I (23), the lower end face of the seat portion I (21) is provided to be coupled with an upper end face of the column portion II (24) in a side end face side end of the seat portion I (21) is provided to be coupled with a side thrust telescopic cylinder (4), the upper end face of the seat portion I (21) is provided in a middle to be coupled with a center thrust telescopic cylinder (91) and the middle of the seat portion II (22) is provided to be coupled with a lock type (6) and the column portion II (24) is provided to be coupled with a telescopic cylinder (5) through the column portion respectively, Or the seat part I (21) and the seat part II (22) are respectively arranged as bar-shaped bodies, the column part I (23) and the column part II (24) are respectively arranged as guide rail beams, the column part I (23) and the column part II (24) are respectively arranged at intervals along the longitudinal center line of the seat part I (21), Or the forming template (3) is provided with an elastic plate of polypropylene, the middle of the lower end face of the forming template (3) is connected with the central thrust telescopic cylinder (91), the side part of the lower end face of the forming template (3) is connected with the side thrust telescopic cylinder (4), the forming template (3) is distributed corresponding to the pressed leather bag (7), the edge of the upper end face of the forming template (3) is connected with the positioning plate (9) in a contact way, Or the movable beam (5) is provided with a beam part (51) and a cylinder shell IV (52), the left end face and the right end face of the beam part (51) are connected with the peripheral inner side face of the cylinder shell IV (52), the lower end face of the beam part (51) is connected with the box shell (8), the upper end face of the beam part (51) is movably connected with the locking telescopic cylinder (6), the cylinder shell IV (52) is connected with the frame (2), Or, the beam portion (51) is provided as a convex bar and the cartridge case IV (52) is provided as a tubular body, Or the locking telescopic cylinder (6) is arranged to comprise a telescopic cylinder part (61), a hinged head part III (62) and a hinged seat part III (63), the telescopic end of the telescopic cylinder part (61) is arranged to be connected with the inner end face of the hinged head part III (62), the lower end of the hinged head part III (62) is arranged to be movably connected with the hinged seat part III (63), the outer cylinder shell of the telescopic cylinder part (61) is arranged to be connected with the frame (2) in a penetrating way, the hinged seat part III (63) is arranged to be connected with the movable beam (5) in an embedded way, Or the telescopic cylinder part (61) is arranged as an electric push rod, the hinged head part III (62) is arranged as a rod-shaped body with a ball head at the lower end, the hinged seat part III (63) is provided with a block-shaped body with a spherical cavity, the ball head of the hinged head part III (62) is arranged to be connected with the spherical cavity of the hinged seat part III (63), Or the pressing leather bag (7) is provided with a rubber bag body with an air inlet nozzle, the pressing leather bag (7) is connected with the box shell (8) in an embedded way, the air inlet nozzle of the pressing leather bag (7) is connected with the box shell (8) in a penetrating way, the pressing leather bag (7) is distributed corresponding to the forming template (3), Or, the case (8) is configured to include a plate portion I (81), a cylinder case V (82), a plate portion II (83), a bar block portion (84) and a plate portion III (85), and the middle of the inner wall of the cylinder case V (82) is configured to be coupled with the peripheral side surface of the plate portion I (81), the lateral portion of the bar block portion (84) is configured to be coupled with the lower side surface edge of the plate portion I (81) and the vertical portion of the bar block portion (84) is configured to be coupled with the middle of the inner wall of the cylinder case V (82), the lower side of the outer wall of the cylinder case V (82) is configured to be coupled with the inner end surface of the plate portion II (83) and the upper side of the outer end surface of the plate portion II (83) is configured to be coupled with the inner end surface of the plate portion III (85), the upper port of the cylinder case V (82) and the upper end of the plate portion II (83) are configured to be respectively coupled with the brake beam (5) in an embedded manner, and the lower port of the cylinder case V (82) is configured to be coupled with the positioning plate (9), the upper side surface of the cylinder case V (82) and the upper side surface of the plate portion III (85) are configured to be coupled with the air inlet bag 7 respectively, the upper side of the cylinder case V (82) and the upper side of the cylinder case (82) is configured to be coupled with the upper side of the cylinder case (81) and the bag 7 is configured to be pressed, Alternatively, the cylinder housing V (82) is provided as a tubular body and the plate portion I (81), the plate portion II (83) and the plate portion III (85) are provided as sheet-like bodies, respectively, the bar portion (84) is provided as a right-angled triangular block-like body, Or the positioning plate (9) is arranged as a strip-shaped body, the upper part of the positioning plate (9) is arranged to be connected with the box shell (8) in an embedded way, the end face of the lower end of the positioning plate (9) is arranged to be connected with the forming template (3) in a contact way, Or, the side thrust telescopic cylinder (4) and the center thrust telescopic cylinder (91) are respectively arranged to comprise a hinge seat I (41), a hinge head I (42), a hinge seat II (43), a hinge head II (44), a cylinder shell I (45), a cylinder shell II (46), a butt seat (402), a cylinder shell III (47), a motor assembly part (48), a screw rod part (49), a nut part (40) and a limiting block part (401), wherein the hinge head I (42) is movably connected with the hinge seat I (41), the hinge head II (44) is movably connected with the hinge seat II (43) and the hinge head I (42) is movably connected with the outer port of the cylinder shell I (45), the hinge head II (44) is movably connected with the outer port of the cylinder shell III (47) and the inner port of the cylinder shell I (45) is sleeved with the inner end of the cylinder shell II (46), the inner port of the cylinder shell II (46) is sleeved with the butt seat (402) and the cylinder shell I (45) is movably connected with the motor assembly part (48) and the cylinder shell II (40) is sleeved with the screw rod part (47) and the screw rod part (47) is sleeved with the inner port of the cylinder shell II (46), an end shaft of the motor assembly part (48) and an inner end of the screw rod part (49) are rotatably connected with the butt joint part (402), the end shaft of the motor assembly part (48) is connected with the inner end of the screw rod part (49) in an embedded mode, the peripheral outer side surface of the nut part (40) is connected with the inner wall of the cylinder shell II (46) in an anastomotic mode, the middle of the nut part (40) is connected with the screw rod part (49) in a threaded mode, the outer end of the nut part (40) is connected with the inner end of the cylinder shell III (47) and the outer end of the screw rod part (49) is connected with the limiting block part (401), the inner end surface of the limiting block part (401) is connected with the outer end surface of the nut part (40) in a contact mode, the hinging seat part I (41) is connected with the frame (2), the hinging seat II (43) is connected with the forming template (3), Or, the hinge seat I (41) and the hinge seat II (43) are provided as block bodies having spherical cavities and the hinge head I (42) and the hinge head II (44) are provided as rod bodies having balls, the balls of the hinge head I (42) are provided as integrated bodies having a motor and a decelerator for control and an output shaft of the decelerator having a rectangular intermediate connecting rod, the balls of the hinge head II (44) are provided as coupled with the spherical cavities of the hinge seat II (43), the cartridge I (45) and the cartridge III (47) are provided as square tubular bodies, respectively, the cartridge II (46) is provided as square tubular bodies having 匚 -shaped groove bodies on the inner wall and the hinge seat II (402) is provided as shaft supporting seat bodies having bearings, the bearings of the hinge seat I (402) are provided as integrated bodies having a motor and a decelerator for control and an output shaft of the decelerator having a rectangular intermediate connecting rod, the screw part (49) is provided as a light stud bolt having a blind hole and the cartridge nut part (40) is provided as a block body having a screw hole and a fin body having a side surface, the block body (401) is provided as a block body having a rectangular groove body having a fin body and the fin body (62) is provided at the upper end of the screw part (46) and the screw body (46) is provided as a sheet-shaped groove body (46) is provided on the upper end of the screw body (46) of the screw body (40) is provided with a screw body, the output end shaft of the speed reducer of the motor assembly part (48) is connected with the rotary type of the butt joint part (402) in a rotary mode, the rectangular middle connecting rod of the motor assembly part (48) is connected with the rectangular connecting blind hole body of the screw rod part (49) in a rotary type, Or, the ratio of the distance between adjacent hinge seats I (41) to the distance between adjacent hinge seats II (43) is set to 1:1.2-1.5, Or, the machine base (1) is arranged into a trapezoid block shape, the upper end face part of the machine base (1) is arranged to be in contact connection with the machine frame (2), and the lower end face part of the machine base (1) is arranged to be in contact connection with the foundation.
- 7. The sheet bending molding apparatus based on a flexible press body as claimed in any one of claims 1 to 6, wherein the frame (2) and the molding die plate (3), the side thrust telescoping cylinder (4), the center thrust telescoping cylinder (91), the movable beam (5), the locking telescoping cylinder (6), the pressing bellows (7), the case (8) and the positioning plate (9) are arranged to be distributed in a double-sided action molding manner and the frame (2), the molding die plate (3), the side thrust telescoping cylinder (4), the center thrust telescoping cylinder (91), the movable beam (5), the locking telescoping cylinder (6), the pressing bellows (7), the case (8) and the positioning plate (9) are arranged to be distributed in an end support manner with the base (1), Or, the central line of the frame (1), the central line of the frame (2), the central line of the forming template (3), the central line of the central thrust telescopic cylinder (91), the central line of the movable beam (5), the central line of the locking telescopic cylinder (6), the central line of the pressing leather bag (7) and the central line of the case (8) are arranged on the same straight line, the two frames (1) are arranged on the frame (2), a plurality of side thrust telescopic cylinders (4) and a plurality of central thrust telescopic cylinders (91) are arranged between the forming template (3) and the forming template (3), the plurality of central thrust telescopic cylinders (91) are arranged to be distributed at intervals along the longitudinal central line of the forming template (3), the plurality of side thrust telescopic cylinders (4) and one central thrust telescopic cylinder (91) are arranged to be distributed at intervals along the transverse central line of the forming template (3), one movable beam (5) and two locking telescopic cylinders (6) are arranged to form a group of sliding parts, the sliding parts are arranged to be distributed along the longitudinal central line of the case (8), one group of sliding parts is arranged to be connected with the case (9), one cylinder (82) is arranged to be connected with the other cylinder (82), and the other cylinder (82) is arranged to be connected with the other cylinder (82) to be connected with the other cylinder (81) by the other cylinder (81) Plate section II (83) and plate section III8 are respectively arranged to be coupled with beam section (51), telescopic cylinder section (61) is arranged to be coupled with seat section II (22), cylinder housing IV (52) is respectively arranged to be coupled with column section I (23) and column section II (24), and hinge seat section I (41) is arranged to be coupled with seat section I (21).
- 8. The flexible pressed body-based sheet bending apparatus as claimed in claim 5, wherein the molding die plate (3) and the positioning plate (9) are respectively provided as link plates composed of adjacent overlapping independent intermediate plate members, Or comprises a clamping seat (10), a guide seat (20), a spring strip (30), a displacement sensor (50), a vacuum chuck (60) and a supporting seat (70), wherein the clamping seat (10) is arranged on a forming template (3), the guide seat (20) is arranged on the clamping seat (10) and the spring strip (30) is arranged in the guide seat (20), the displacement sensor (50) is arranged between the spring strip (30) and the clamping seat (10) and a movable beam (5), the supporting seat (70) is arranged on the spring strip (30), the vacuum chuck (60) is arranged between the supporting seat (70) and the forming template (3), Or, the clamping seat (10) is provided with a seat part III (101) and an ear part (102), an accommodating groove body (103) is arranged on the inner end face of the seat part III (101), the inner side of the outer end face of the seat part III (101) is connected with the inner end face of the ear part (102) and the accommodating groove body (103) is connected with the edge of the forming template (3), the inner wall of the accommodating groove body (103) and the edge of the inner end face of the seat part III (101) are respectively connected with the forming template (3) through an adhesive layer body, the outer side of the outer end face of the seat part III (101) is connected with the guide seat (20) and the inner side face of the ear part (102) is connected with the displacement sensor (50) in a contact mode, Or the seat part III (101) is a rectangular block body, the lug part 102 is a single-plate lug seat, the accommodating groove body 103 is a 匚 -shaped opening body, Or the guide seat (20) is an L-shaped block body with a through hole body at the lower end, the upper contraction side of the inner end surface of the guide seat (20) is connected with the clamping seat (10), the through hole body of the guide seat (20) is connected with the spring strip (30), Or the spring strip (30) is a 匚 -shaped spring sheet body, the vertical part of the spring strip (30) is connected with the displacement sensor (50), the transverse end of the spring strip (30) is connected with the guide seat (20) in a penetrating way, the middle of the transverse part of the spring strip (30) is connected with the supporting seat (70), Or the displacement sensor (50) is arranged as a laser displacement sensor, the laser of the displacement sensor (50) is arranged to be connected with the spring strip (30), the laser detector of the displacement sensor (50) is arranged to be connected with the clamping seat (10) in a contact way, the laser detector of the displacement sensor (50) is arranged to be connected with the lower end face of the beam part (51) through the adjusting screw barrel, Or the vacuum sucker (60) is an electric vacuum sucker, the outer end face of the vacuum sucker (60) is connected with the supporting seat (70), the sucker of the vacuum sucker (60) is connected with the forming template (3), Or, the supporting seat (70) is provided to include a seat IV (701), a backing plate part (702), an adjusting screw part (703) and a tightening screw part (704) and is provided with a receiving hole body (705) in the seat IV (701), the receiving hole body (705) is respectively provided to be connected with a transverse part of the backing plate part (702) and a spring bar (30), and vertical part inner end faces of the backing plate part (702) are respectively provided to be connected with left and right side faces of the seat IV (701), the adjusting screw part (703) is provided to be connected with an outer end face middle screw of the seat IV (701) and an inner end face of the adjusting screw part (703) is provided to be connected with a transverse part outer side face of the backing plate part (702) in a contact manner, the tightening screw part (704) is provided to be connected with an outer end face edge screw of the seat IV (701) and the inner end face of the backing plate part (702) is provided to be connected with the spring bar (30) in a contact manner, the middle of an outer end face of the seat IV (701) is provided to be connected with a vacuum chuck (60), Or, the seat IV (701) is provided with a rectangular block body, the backing plate part (702) is provided with a 匚 -shaped bar block body, the adjusting screw part (703) and the propping screw part (704) are respectively provided with inner hexagonal bolts, the accommodating hole body (705) is provided with a rectangular hole body, the two propping screw parts (704) are arranged on the seat IV (701), Or the clamping seat (10) and the guide seat (20) are distributed along with the spring strip (30), the displacement sensor (50), the vacuum chuck (60) and the supporting seat (70) in a mode of picking up the moving signals, Or, a clamping seat (10), a guide seat (20) and a displacement sensor (50) are arranged to form a group of seat parts, a vacuum chuck (60) and a supporting seat (70) are arranged to form a group of seat parts, and the two groups of seat parts are arranged on a spring strip (30) and are connected with the lower end face of a beam part (51) on the upper screw end face of a laser detector adjusting screw barrel of the displacement sensor (50).
- 9. A method for using a sheet bending device based on a flexible pressed body is characterized in that the sheet bending device body is used for clamping, anastomosing and bending the sheet, a push telescopic cylinder is used for combining a follow-up swinging state of a forming template (3), and a pressing clamping opening for stably clamping the bent sheet is achieved.
- 10. The method for using the flexible pressed body-based sheet bending forming device according to claim 9, wherein when the motor assembly part (48) is in an operating state, the rectangular middle connecting rod of the motor assembly part (48) is connected with the rectangular connecting blind hole body of the screw rod part (49), the screw rod part (49) is driven to rotate in the butt joint part (402), the wing block of the female part (40) is driven to move in the 匚 -shaped groove body of the barrel shell II (46) through the threaded movement between the nut part (40) and the screw rod part (49), the barrel shell III (47) is driven to extend and retract in the barrel shell II (46), the distance between the hinge joint part I (41) and the hinge joint head part II (44) is regulated, the nut part (40) is stopped moving in the barrel shell II (46) when the nut part (40) is contacted with the limiting block part (401), When the sheet is required to be bent and formed, the motor assembly part (48) is in an operating state, the hinging seat part II (43) is in an upper state, the cylinder shell IV (52) moves on the column part I (23) and the column part II (24) through the locking telescopic cylinder (6), the positioning plate (9) acts on the edge of the upper end face of the forming template (3), the outer side thrust telescopic cylinder (4) is in a non-operating state, the inner side thrust telescopic cylinder (4) and the central thrust telescopic cylinder (91) are in an operating state, downward pulling force is applied to the forming template (3), deformation acting force is generated to the forming template (3), the forming template (3) corresponds to the bending shape of the sheet, the cylinder shell IV (52) moves upwards on the column part I (23) and the column part II (24) through the locking telescopic cylinder (6), the positioning plate (9) is separated from the edge of the upper end face of the forming template (3), the sheet is placed on the forming template (3), the positioning plate (9) acts on the upper end face of the forming template (3), the sheet is pressed into a leather bag (7) by the upper end face of the forming template (3), the leather bag (7) is pressed, and the leather bag (7) is pressed, the leather bag is pressed and the leather bag is formed, and the leather bag is inflated and the leather bag is pressed, and the leather bag is formed is pressed, and the leather bag is pressed, the repositioning plate (9) is separated from the edge of the upper end face of the molding template (3) to take out the bent thin plate from the molding template (3), Or, the method comprises the steps of placing the accommodating groove body (103) on the edge of the molding template (3), injecting adhesive layer body raw materials between the inner wall of the accommodating groove body (103) and the inner end face edge of the seat part III (101) and the molding template (3), and after the adhesive layer body raw materials are condensed, thereby installing the clamping seat (10) on the edge of the molding template (3), when the laser of the displacement sensor (50) emits laser signals on the vertical part of the spring strip (30), picking up the position signals of the emitted laser by the laser detector of the displacement sensor (50) positioned on the ear part (102), thereby obtaining the position signals of the spring strip (30) in the guide seat (20), and when the adjusting screw part (703) rotates in the middle of the outer end face of the seat part IV (701), adjusting the length of the adjusting screw part (703) in the accommodating hole body (705), thereby adjusting the position of the transverse part of the backing plate part (702) in the accommodating hole body (705), realizing the adjustment of the transverse part of the spring strip (30) and the transverse part (3) to enable the bending of the backing plate (30) to be parallel to the shape of the spring strip (30) to the molding template (3) after the bending of the spring strip (30) is installed on the support (3), the method comprises the steps that a lower screw of a laser detector adjusting screw barrel of a displacement sensor (50) rotates in the screw barrel of the laser detector adjusting screw barrel of the displacement sensor (50), a laser detector of the displacement sensor (50) is in contact with the inner side surface of an ear seat part (102), a spring strip (30) moves in a through hole body of a guide seat (20), the spring strip (30) is in a bending state along with deformation of a forming template (3), a vacuum chuck (60) is in an operating state, a chuck of the vacuum chuck (60) is connected with the forming template (3), the displacement sensor (50) is in an operating state, the displacement sensor (50) picks up a position signal of the spring strip (30) in the guide seat (20), when the forming template (3) in the bending state is used for bending a thin plate, when the bending state of the forming template (3) in the bending state changes, the position signal of the spring strip (30) in the guide seat (20) is driven to change through the vacuum chuck (60) and the support seat (70), and accordingly the position signal of the spring strip (30) in the guide seat (20) is picked up and changed.
Description
Sheet bending device based on flexible pressed body and use method Technical Field The invention relates to a sheet bending device and a using method, in particular to a sheet bending device based on a flexible pressed body and a using method. Background The thin metal plate in bending is widely applied in the industries of machinery, electronics, decoration and the like, so the thin plate bending forming device is an important plate forming device, in the existing thin plate bending forming device, a thrust telescopic cylinder is fixedly connected with a frame, and the bending forming precision of the thin plate is affected because a relative stable state cannot be kept between a forming template and a pressing leather bag, The invention effectively researches and researches the technical problems of fixedly connecting the thrust telescopic cylinder and the frame together by the technical characteristics of the bending and forming thin plates in the pressing clamping opening in a stable state. Disclosure of Invention The object of the invention is a sheet bending device based on a flexible press body, The invention discloses a method for using a sheet bending forming device based on a flexible pressed body. In order to overcome the technical defects, the invention aims to provide a sheet bending forming device based on a flexible pressed body and a using method thereof, so that the sheet bending forming precision is improved. In order to achieve the purpose, the invention adopts the technical scheme that the device comprises a thin plate bending forming device body with a frame and a forming template, and a thrust telescopic cylinder group arranged between the frame and the forming template. Due to the design of the thin plate bending device body and the thrust telescopic cylinder group, the thin plate is clamped, anastomosed and bent and formed through the thin plate bending device body, the follow-up swinging state of the forming template is realized through the thrust telescopic cylinder group, the pressing clamping opening of the bent and formed thin plate in a stable state is realized, and the technical problem that the thrust telescopic cylinder and the frame are fixedly connected together is solved, so that the bending and forming precision of the thin plate is improved. One of the related technical solutions is to connect the sheet bending device body and the thrust telescopic cylinder group with each other in such a manner that the sheet bending device body is in a pressing nip in a stable state therebetween. In the second related technical scheme, the thrust telescopic cylinder group is connected with the sheet bending forming device body in a follow-up swinging state. In the third related technical scheme, the sheet bending device body comprises a movable beam, a locking telescopic cylinder, a pressing leather bag, a case shell and a positioning plate. The fourth related technical proposal is that the thrust telescopic cylinder group comprises a side thrust telescopic cylinder and a central thrust telescopic cylinder. The technical scheme has the technical effect that stable deformation bending acting force is generated on the thin plate needing bending forming. The fifth related technical aspect further includes a first accessory device disposed on the sheet bending device body, the first accessory device being configured as a stand. The technical scheme has the technical effects that the integrated installation of other components is realized, and the technical effects of the invention are expanded. The sixth technical proposal is that a frame is arranged on a machine base, a side thrust telescopic cylinder, a central thrust telescopic cylinder and a movable beam are respectively arranged on the frame, a locking telescopic cylinder is arranged between the movable beam and the frame, a box shell is arranged on the movable beam, a positioning plate is arranged on the box shell, a forming template is arranged between the positioning plate and the side thrust telescopic cylinder and the central thrust telescopic cylinder, and a pressed leather bag is arranged between the forming template and the box shell. The technical effect of the technical scheme is that the basic technical scheme of the invention is formed by the machine base, the machine frame, the forming template, the side thrust telescopic cylinder, the center thrust telescopic cylinder, the movable beam, the locking telescopic cylinder, the pressing leather bag, the box shell and the positioning plate, and the technical problem of the invention is solved. The seventh related technical scheme is that the frame comprises a seat I, a seat II, a column I and a column II, one side part of the seat I is connected with the lower end socket of the column I in a sleeved mode, the other side part of the seat I is connected with the lower end socket of the column II in a sleeved mode, one side of the lower end face of the seat I is connected with t