CN-121988641-A - Valve body forming equipment and forming welding method

CN121988641ACN 121988641 ACN121988641 ACN 121988641ACN-121988641-A

Abstract

The invention discloses valve body forming equipment and a forming welding method. The molding assembly comprises a first molding part and a second molding part, wherein the first molding part is connected to the frame and is positioned right below the molding base body along the second direction, the first molding part can reciprocate along the second direction, the second molding part is symmetrically arranged on two sides of the molding base body along the third direction, the two second molding parts can synchronously approach to or separate from each other, and the first molding part and the two second molding parts are respectively provided with molding surfaces matched with the reference surfaces of the molding base body. The roundness precision and the size consistency of the valve body can be effectively improved, the straight edge residue phenomenon at the end part of the plate is reduced, and the forming precision of the valve body is improved.

Inventors

LI MINGHE
LIN WEIXUAN
LI JIESHENG
CHEN CONG
HUANG YI

Assignees

长沙学院
广东耀安实业有限公司

Dates

Publication Date: 20260508
Application Date: 20260326

Claims (10)

1. The valve body forming equipment is characterized by comprising a frame (1), a forming base body (2) and a forming assembly (3); The forming base body (2) is arranged on the frame (1) and is provided with a reference surface for limiting the forming of the valve body, and the axis of the forming base body extends along a first direction; The molding assembly (3) comprises a first molding piece (31) and a second molding piece (33), the first molding piece (31) is connected to the frame (1) and is positioned right below the molding base body (2) along a second direction, and the first molding piece (31) can reciprocate along the second direction; The second forming pieces (33) are symmetrically arranged on two sides of the forming base body (2) along a third direction, the two second forming pieces (33) can synchronously approach to or separate from each other along the third direction, and the first forming piece (31) and the two second forming pieces (33) are respectively provided with forming surfaces matched with the reference surfaces of the forming base body (2); The plate to be molded is arranged between the molding base body (2) and the first molding piece (31) and is arranged in a centering manner, the first molding piece (31) and the second molding piece (33) are sequentially close to the molding base body (2), and after reaching a target position, the three molding surfaces are arranged on the outer side of the molding base body (2) in a surrounding manner and define a molding space for forming a valve body.
2. Valve body forming apparatus according to claim 1, characterized in that the forming base body (2) is a cylindrical structure detachably connected to the frame (1), the reference surface being the outer surface of a cylinder.
3. Valve body forming equipment according to claim 2, characterized in that a first driving piece (32) is fixedly arranged on the frame (1), the first forming piece (31) is detachably connected to the driving end of the first driving piece (32), the first forming piece (31) is provided with a first forming groove (311), and the groove bottom of the first forming groove (311) is a forming surface; The machine frame (1) is fixedly provided with a second driving piece (34), the second forming piece (33) is detachably connected to the driving end of the second driving piece (34), the second forming piece (33) is provided with a second groove (331), and the bottom of the second groove (331) is a forming surface.
4. A valve body forming apparatus according to claim 3, wherein the first driving member (32) drives the first forming member (31) to a target position, the second driving member (34) drives the second forming member (33) to a target position, and the first forming grooves (311) and the second forming grooves (331) are coincident in axis and are each coincident in axis with the forming base body (2).
5. A valve body forming apparatus according to claim 3, further comprising a support assembly (4) for supporting a plate to be formed, the support assembly (4) comprising: The bearing seats (41) are connected to the frame (1) and positioned below the forming base body (2), two bearing seats (41) are symmetrically arranged along a first direction, the two bearing seats (41) are used for placing a plate to be formed, and the first forming part (31) is positioned between the two bearing seats (41); the transverse limiting part (42) is connected with the bearing seat (41) and is used for limiting the plate to be formed along the first direction; And the lateral limiting part (43) is connected with the bearing seat (41) and is used for limiting the plate to be formed along the third direction.
6. Valve body forming apparatus according to claim 5, further comprising a stripper assembly (5), the stripper assembly (5) comprising: the sliding rails (51) are fixed on the frame (1), two sliding rails (51) are symmetrically arranged, mounting seats are slidably arranged on the two sliding rails (51), and the two bearing seats (41) are respectively connected to the two mounting seats; the demolding blocks (52) are arranged on each mounting seat, and each demolding block (52) is provided with an arc surface which can be attached to the reference surface of the molding substrate (2); the third driving piece (53) is fixedly arranged on the frame (1), and the driving end of the third driving piece (53) is connected with the disengaging module (52).
7. A valve body forming apparatus according to claim 3, wherein a fastening gap is formed between upper ends of the two second forming members (33) after the two second forming members (33) reach the target position.
8. Valve body forming apparatus according to claim 7, characterized in that, on the forming base body (2), at a position corresponding to the securing gap, the outer surface of the forming base body (2) is inwardly formed with a relief plane (21) extending in a first direction.
9. A valve body forming device according to claim 3, characterized in that a mounting groove (332) is formed inwards on the forming surface of the second forming piece (33), a press roller (333) is rotationally arranged in the mounting groove (332), the outer end surface of the press roller (333) is flush with the forming surface, a plurality of press rollers (333) are arranged at intervals along the extending direction of the groove bottom of the second forming groove (331), and microprotrusions are arranged at intervals on the outer surface of the press roller (333); the first forming part (31) is connected to the driving end of the first driving part (32) through a connecting seat, a transmission part (334) is rotatably arranged in the connecting seat, and the transmission part (334) is used for driving a plurality of press rolls (333) to rotate.
10. A valve body molding and welding method using the valve body molding apparatus as claimed in any one of claims 1 to 9, comprising the steps of: s1, placing a plate to be molded between the molding base body (2) and the first molding piece (31), and centering the plate to be molded relative to the molding base body (2); s2, driving the first forming piece (31) to move towards the forming base body (2), so that the first forming piece (31) supports a plate to be formed and presses the middle part of the plate to be formed to the forming base body (2), and the middle part of the plate to be formed gradually fits with the reference surface of the forming base body (2) and forms an initial bending shape; S3, driving two second forming pieces (33) positioned on two sides of the forming base body (2) to synchronously move towards the forming base body (2), so that two sides of a plate to be formed are gradually attached to the reference surface of the forming base body (2), and the plate to be formed is bent into a ring-shaped structure around the forming base body (2); Step S4, continuously driving the first molding piece (31) and the two second molding pieces (33) to target positions, enabling molding surfaces of the first molding piece (31) and the two second molding pieces (33) to be arranged on the outer side of the molding base body (2) in a surrounding mode, limiting a molding space of a valve body, and shaping the annular structure; And S5, welding the opposite ends of the to-be-molded plate in the molding space maintaining state to form a closed valve body annular structure.

Description

Valve body forming equipment and forming welding method Technical Field The invention relates to the technical field of molding, in particular to valve body molding equipment and a molding welding method. Background In the fields of fluid control systems, industrial pipelines, fire-fighting smoke-discharging systems and the like, metal annular structural members are important component parts, such as round valve bodies, flange rings or hoops and the like. For a circular valve body, the circular valve body is usually formed by bending a metal straight plate into a circular shape and then welding the circular shape, and the roundness and the dimensional accuracy of the bent metal straight plate directly influence the sealing performance and the assembly accuracy of the valve body, so that the circular holding forming of the metal straight plate is an important process link in the manufacturing process of the valve body. In the prior art, a plate bending machine or a bending machine is generally adopted for processing aiming at bending and rounding forming of a metal plate. For example, a three-roll or four-roll bending machine continuously rolls a sheet material through relative rotation among a plurality of roll shafts to gradually bend and deform the sheet material and finally form an arc or cylinder structure, or bends the sheet material for a plurality of times through a bending machine to gradually approach the circular structure. However, in practical application, the plate bending machine rolls and bends the plate by virtue of a roll shaft, the two end parts of the plate are difficult to roll completely in the rolling process, the problem of straight edge residue is easy to occur, and the roundness precision after forming is affected. Therefore, the existing forming equipment for processing the valve body or the annular structural part still has the defect of low forming precision. Disclosure of Invention The invention aims to provide valve body forming equipment and a forming welding method, which solve the problem that the existing forming equipment for processing a valve body or an annular structural member still has low forming precision. To achieve the purpose, the invention adopts the following technical scheme: a valve body forming device comprises a frame, a forming matrix and a forming assembly; the forming matrix is arranged on the frame and is provided with a reference surface for limiting the forming of the valve body, and the axis of the forming matrix extends along a first direction; The molding assembly comprises a first molding piece and a second molding piece, the first molding piece is connected to the frame and is positioned right below the molding base body along a second direction, and the first molding piece can reciprocate along the second direction; The second forming pieces are symmetrically arranged on two sides of the forming base body along a third direction, the two second forming pieces can synchronously approach to or separate from each other along the third direction, and forming surfaces matched with the reference surfaces of the forming base body are respectively arranged on the first forming piece and the two second forming pieces; the to-be-molded plate is arranged between the molding base body and the first molding piece, is arranged in a centering manner, and sequentially approaches to the molding base body, and three molding surfaces are arranged on the outer side of the molding base body in a surrounding manner after reaching a target position, so that a molding space of the valve body is defined. Optionally, the forming substrate is a cylinder structure detachably connected to the frame, and the reference surface is an outer surface of the cylinder. Optionally, a first driving part is fixedly arranged on the frame, the first molding part is detachably connected to the driving end of the first driving part, the first molding part is provided with a first molding groove, and the bottom of the first molding groove is a molding surface; The machine frame is fixedly provided with a second driving part, the second molding part is detachably connected to the driving end of the second driving part, the second molding part is provided with a second molding groove, and the bottom of the second molding groove is a molding surface. Optionally, the first driving piece drives the first shaping piece to reach the target position, the second driving piece drives the second shaping piece to reach the target position, the axis coincidence of first type groove with the axis coincidence of second type groove, and all coincide with the axis of shaping base member. Optionally, the support assembly is used for supporting the plate to be formed, and the support assembly comprises: the bearing seats are connected to the frame and positioned below the forming base body, two bearing seats are symmetrically arranged along a first direction, the two bearing seats are used for placing a plat