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CN-121798845-B - Auxiliary blanking mechanism for continuous drawstring insert injection molding

CN121798845BCN 121798845 BCN121798845 BCN 121798845BCN-121798845-B

Abstract

The invention discloses an auxiliary blanking mechanism for continuous drawstring insert injection molding, which belongs to the technical field of insert injection molding and comprises a connecting base and a guide cylinder arranged on the connecting base, wherein the telescopic end of the guide cylinder is connected with a supporting transverse plate, the upper end of the supporting transverse plate is fixedly provided with a linear guide rail, a sliding block on the linear guide rail is arranged at the end part of a mechanical arm, one end of the mechanical arm far away from the sliding block is fixedly provided with a positioning pressure head, the positioning pressure head is provided with a pressing unit, the pressing unit is used for pressing a metal patch into a cavity of an injection mold, and the contact end of the pressing unit and the metal patch is provided with a flexible piece. This an supplementary blanking mechanism for drawing area inserts in succession moulds plastics, through set up the flexible piece on the briquetting, utilize the deformation of flexible piece to play the cushioning effect to the metalwork, when there is the foreign matter in the die cavity simultaneously, the portion of exerting pressure on the briquetting can receive the resistance to take place to remove, utilizes the removal of portion of exerting pressure to detect the foreign matter in the die cavity.

Inventors

  • RUAN YONGJUN
  • WANG ZHENJIANG
  • TU HAN

Assignees

  • 江苏翊腾电子科技股份有限公司

Dates

Publication Date
20260508
Application Date
20260311

Claims (7)

  1. 1. An auxiliary blanking mechanism for continuous drawstring insert injection molding comprises a connecting base (1) and a guide cylinder (2) arranged on the connecting base (1), wherein the telescopic end of the guide cylinder (2) is connected with a supporting transverse plate (3), the upper end of the supporting transverse plate (3) is fixedly provided with a linear guide rail (4), a sliding block (5) on the linear guide rail (4) is arranged at the end part of a mechanical arm (6), one end of the mechanical arm (6) far away from the sliding block (5) is fixedly provided with a positioning pressure head (7), the auxiliary blanking mechanism is characterized in that a pressure applying unit (8) is arranged on the positioning pressure head (7), the pressure applying unit (8) is used for pressing a metal patch into a cavity of an injection mold (21), the contact end of the pressure applying unit (8) and the metal patch is provided with a flexible piece (9), the flexible piece (9) is communicated with the inner cavity of the pressure applying unit (8) through a gas transmission pipe (10), a first pressure sensor (11) is arranged in the inner cavity of the pressure applying unit (8), the flexible piece (9) is used for applying pressure to the metal patch and detecting the buffer strip, and simultaneously, the movable piece (12) is prevented from being blocked by the magnetic patch detecting part, and the movable piece is prevented from being blocked by the movable piece (12) when the magnetic patch detecting part is detected, retracting the pressing unit (8) to avoid; the pressing unit (8) and the movable block (12) can slide along the vertical direction of the positioning pressure head (7), and the movable block (12) is connected with the positioning pressure head (7) through the metal elastic sheet (20); the magnetic control dodges detection part is including fixing first magnetic path (13) at movable block (12) upper end side, and the upper end mid-mounting of movable block (12) has a top briquetting (14), the top of first magnetic path (13) is provided with fixes at inside second magnetic path (15) of location pressure head (7), and the top of top briquetting (14) is provided with fixes at inside second pressure sensor (16) of location pressure head (7), and magnetism between second magnetic path (15) and first magnetic path (13) is opposite.
  2. 2. The auxiliary blanking mechanism for continuous drawstring insert injection molding according to claim 1, wherein a plurality of guide posts are arranged at the bottom of the supporting transverse plate (3), and the lower guide post of the supporting transverse plate (3) can slide on the connecting base (1).
  3. 3. The auxiliary blanking mechanism for continuous drawstring insert injection molding according to claim 1, wherein a plurality of pressing units (8) are uniformly distributed on the positioning pressure head (7), and a flexible piece (9) is arranged at one end, contacted with the metal patch, of each pressing unit (8).
  4. 4. The auxiliary blanking mechanism for continuous drawstring insert injection molding according to claim 3, wherein the flexible piece (9) at the bottom of the pressing unit (8) is made of fluorine-silica gel, the inside of the flexible piece (9) is of a hollow structure, and air flow in the flexible piece (9) after being pressed can enter the cavity in the pressing unit (8) through the air pipe (10).
  5. 5. The auxiliary blanking mechanism for continuous drawstring insert injection molding of claim 1, wherein the side edges of the movable blocks (12) are provided with limiting plug-in components, the limiting plug-in components are used for limiting the movable blocks (12) and the pressing units (8) after retraction and avoidance, and the side edge of each movable block (12) is provided with a limiting plug-in component.
  6. 6. The auxiliary blanking mechanism for continuous drawstring insert injection molding according to claim 5, wherein the limiting plug-in component comprises a limiting cross rod (17) arranged on the positioning press head (7), the limiting cross rod (17) is connected with the positioning press head (7) through an auxiliary spring (18), and a guide groove (19) is formed in one side, facing the limiting cross rod (17), of the movable block (12).
  7. 7. The auxiliary blanking mechanism for continuous drawstring insert injection molding according to claim 6, wherein the longitudinal section of the limiting cross rod (17) close to one end of the movable block (12) is of a right trapezoid structure, the outer wall of the limiting cross rod (17) close to one end of the movable block (12) is mutually attached to the inner wall of the guide groove (19) on the movable block (12), and the limiting cross rod (17) forms an elastic telescopic structure through an auxiliary spring (18) and a positioning pressure head (7).

Description

Auxiliary blanking mechanism for continuous drawstring insert injection molding Technical Field The invention relates to the technical field of insert injection molding, in particular to an auxiliary blanking mechanism for continuous drawstring insert injection molding. Background In order to realize automatic continuous production, the metal inserts are conveyed in a continuous drawstring mode, a plurality of miniature and thin-wall metal patches are preset on a strip-shaped carrier belt at equal intervals, the metal patches are gradually conveyed to the upper part of a die cavity through a feeding mechanism, and then punched or stripped by a push rod or an auxiliary mechanism and fall into the die cavity, and then the metal patches are subjected to die assembly and injection molding. The manipulator jig for insert injection molding comprises an insert assembly for inserting an insert into a front mold and a holding tool assembly for taking a product out of a rear mold, wherein the insert assembly comprises a push plate and a support plate, the support plate is sequentially provided with a first guide post, a second guide post and a second guide post, the push plate is sleeved on the guide post and the first guide post, and the two guide posts are respectively sleeved with a push pipe. The electric sucking disc is also installed on the front surface of the supporting plate, the ejection cylinder is installed at the back surface position of the supporting plate corresponding to the center of the pushing plate, the holding tool assembly comprises a fixing plate, a pair of finger cylinders and holding tool pressing plates fixedly connected to two movable ends of the finger cylinders, and the back surface of the supporting plate is in threaded connection with the back surface of the fixing plate through a plurality of connecting rods. In order to facilitate the placement of the metal piece into the cavity when the insert injection molding is performed, the existing jig is provided with a corresponding manipulator, however, the manipulator is inconvenient to detect the metal piece on the pull belt and whether foreign matters exist in the cavity when the metal piece is pressed in, the cavity is in an empty state when the metal piece on the pull belt is in a missing state and is in a subsequent pressing in state, meanwhile, when the injection mold works for a long time, part of scraps remain in the cavity, when the metal piece is forced to be pressed into the cavity, deformation of the pressed metal piece is easily caused due to the blockage of the foreign matters, and the defective rate of a subsequent molded product is further increased. We have therefore proposed an auxiliary blanking mechanism for continuous drawstring insert injection molding in order to solve the problems set out above. Disclosure of Invention The invention aims to provide an auxiliary blanking mechanism for continuous drawstring insert injection molding, which aims to solve the problems that when the existing fixture in the market provided by the background technology is used for insert injection molding, in order to facilitate the placement of metal pieces into a cavity, the corresponding mechanical hand is arranged, however, the mechanical hand is inconvenient to detect whether foreign matters exist in the metal pieces on the drawstring and the cavity or not when the metal pieces are pressed in, when the metal pieces on the drawstring are missing, the cavity is in an empty state when the metal pieces are pressed in the follow-up process, and meanwhile, when an injection mold works for a long time, part of scraps remain in the cavity, when the metal pieces are forced to be pressed in the cavity, deformation of the pressed metal pieces is easy to occur due to the blockage of the foreign matters, and the defective rate of follow-up molded products is high. The auxiliary blanking mechanism for continuous drawstring insert injection molding comprises a connecting base and a guide cylinder arranged on the connecting base, wherein the telescopic end of the guide cylinder is connected with a supporting transverse plate, the upper end of the supporting transverse plate is fixedly provided with a linear guide rail, a sliding block on the linear guide rail is arranged at the end part of a mechanical arm, one end of the mechanical arm far away from the sliding block is fixedly provided with a positioning pressure head, a pressing unit is arranged on the positioning pressure head and used for pressing a metal patch into a cavity of an injection mold, the contact end of the pressing unit and the metal patch is provided with a flexible piece, the flexible piece is communicated with the inner cavity of the pressing unit through a gas transmission pipe, a first pressure sensor is arranged in the inner cavity of the pressing unit and used for pressing and buffering the metal patch and detecting the lack of the drawstring, the upper end of the pressing uni