Search

CN-224210420-U - Automatic locking structure of three-layer die

CN224210420UCN 224210420 UCN224210420 UCN 224210420UCN-224210420-U

Abstract

The utility model relates to the technical field of dies and discloses an automatic locking structure of a three-layer die, which comprises an upper fixing plate, a runner plate and a female die plate, wherein a base is fixedly connected to the bottom of the female die plate, a locking assembly is arranged outside the base, a demolding assembly is arranged in the middle of the female die plate, a plastic inlet is fixedly connected to the top of the upper fixing plate, the locking assembly comprises a shell, the shell is fixedly connected to the outer side of the base, a movable block is rotatably connected to the middle of the shell, a connecting rod is fixedly connected to the outer part of the runner plate, and a hollow groove is formed in the connecting rod. According to the utility model, the movable block is matched with the empty groove in a clamping way, so that automatic locking is realized when the mold is closed, and the positioning column of the upper fixing plate is inserted into the positioning holes of the runner plate and the mother template, so that accurate alignment of the three-layer template during closing is ensured, forming deviation is reduced, template dislocation during injection molding is avoided, and the dimensional accuracy and surface quality of a product are improved.

Inventors

  • ZHANG ZUOHONG
  • LI ZHILU
  • MENG CHAO

Assignees

  • 爱斯希姆(大连)精密制造有限公司

Dates

Publication Date
20260508
Application Date
20250529

Claims (8)

  1. 1. The automatic locking structure of the three-layer die comprises an upper fixing plate (1), a runner plate (2) and a female die plate (3) and is characterized in that a base (11) is fixedly connected to the bottom of the female die plate (3), a locking assembly is arranged outside the base (11), a demolding assembly is arranged in the middle of the female die plate (3), and a plastic inlet (7) is fixedly connected to the top of the upper fixing plate (1); The locking assembly comprises a shell (4), the shell (4) is fixedly connected to the outer side of the base (11), a movable block (21) is rotationally connected to the middle of the shell (4), a connecting rod (10) is fixedly connected to the outer portion of the runner plate (2), a hollow groove (20) is formed in the connecting rod (10), the connecting rod (10) is slidably connected to the middle of the shell (4), and the end portion of the movable block (21) is clamped with the hollow groove (20).
  2. 2. The automatic locking structure of a three-layer mold according to claim 1, wherein the locking assembly further comprises a fixed block (25), the fixed block (25) is in contact with the top of the movable block (21), a pressing block (15) is fixedly connected to the top of the fixed block (25), and the pressing block (15) is slidably connected to the middle of the housing (4).
  3. 3. The automatic locking structure of a three-layer mold according to claim 1, wherein the demolding assembly comprises an electric push rod (16), the electric push rod (16) is fixedly connected to the middle of the base (11), the output end of the electric push rod (16) is fixedly connected with a mounting plate (5), the top of the mounting plate (5) is fixedly connected with a thimble (19), a first spring (14) is sleeved outside the thimble (19), the first spring (14) is slidably connected to the middle of the female mold plate (3), and the top of the first spring (14) is fixedly connected with a top plate (18).
  4. 4. The automatic locking structure of a three-layer mold according to claim 1, wherein a fixed rod (23) is arranged at the bottom of the connecting rod (10), a third spring (24) is fixedly connected to the bottom of the fixed rod (23), a second spring (22) is fixedly connected to the inside of the shell (4), and the top of the second spring (22) is in contact with the bottom of the movable block (21).
  5. 5. The automatic locking structure of the three-layer mold according to claim 1, wherein grooves (12) are formed in two sides of the runner plate (2), protrusions (13) are fixedly connected to two sides of the female mold plate (3), and the protrusions (13) are clamped with the grooves (12).
  6. 6. The automatic locking structure of a three-layer mold according to claim 3, wherein a male mold (17) is fixedly connected to the top of the female mold plate (3), and the top plate (18) is slidably connected to the outside of the male mold (17).
  7. 7. The automatic locking structure of the three-layer mold according to claim 1, wherein the outer part of the upper fixing plate (1) is rotatably connected with a mold locking buckle (8), the outer part of the runner plate (2) is fixedly connected with a clamping column (9), and the mold locking buckle (8) is clamped with the clamping column (9).
  8. 8. The automatic locking structure of a three-layer mold according to claim 1, wherein a positioning column (26) is fixedly connected to the bottom of the upper fixing plate (1), a positioning hole (6) is formed in the middle of the runner plate (2) and the female mold plate (3), and the positioning column (26) is slidably connected to the middle of the positioning hole (6).

Description

Automatic locking structure of three-layer die Technical Field The utility model relates to the technical field of dies, in particular to an automatic locking structure of a three-layer die. Background The mould is used for producing various moulds and tools of the needed products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods in industry. The three-plate die is a die requiring two-stage die opening and is suitable for processing some more complex workpieces. At present, more modes of realizing the two-stage die opening of the three-plate die are realized by changing a die opening and closing device on the injection molding machine. The locking structure of traditional three-layer mould adopts manual bolt fastening mode more, and this kind of mode is complex operation not only, extension production cycle, and the bolt tightening dynamics is difficult to unify, leads to each position locking force uneven, influences the whole leakproofness of mould. In addition, the traditional structure lacks accurate positioning design, and each layer of template can not guarantee accurate coaxial when the compound die, so that the product molding size deviation is great, and therefore, an automatic locking structure of a three-layer die is provided to solve the problems. Disclosure of utility model In order to make up for the defects, the utility model provides an automatic locking structure of a three-layer die, and aims to solve the problems of complex manual bolt fixing operation and larger product forming size deviation in the prior art. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The automatic locking structure of the three-layer die comprises an upper fixing plate, a runner plate and a female die plate, wherein a base is fixedly connected to the bottom of the female die plate, a locking assembly is arranged outside the base, a demolding assembly is arranged in the middle of the female die plate, and a plastic inlet is fixedly connected to the top of the upper fixing plate; The locking assembly comprises a shell, the shell is fixedly connected to the outer side of the base, the middle of the shell is rotationally connected with a movable block, the outer part of the runner plate is fixedly connected with a connecting rod, a hollow groove is formed in the connecting rod, the connecting rod is slidably connected to the middle of the shell, and the end part of the movable block is clamped with the hollow groove; As a further description of the above technical solution: The locking assembly further comprises a fixed block, the fixed block is contacted with the top of the movable block, the top of the fixed block is fixedly connected with a pressing block, and the pressing block is slidably connected to the middle of the shell; As a further description of the above technical solution: the demolding assembly comprises an electric push rod, the electric push rod is fixedly connected to the middle of the base, the output end of the electric push rod is fixedly connected with a mounting plate, the top of the mounting plate is fixedly connected with a thimble, the outside of the thimble is sleeved with a first spring, the first spring is slidably connected to the middle of the female template, and the top of the first spring is fixedly connected with a top plate; As a further description of the above technical solution: The bottom of the connecting rod is provided with a fixing rod, the bottom of the fixing rod is fixedly connected with a spring III, the inside of the shell is fixedly connected with a spring II, and the top of the spring II is contacted with the bottom of the movable block; As a further description of the above technical solution: Grooves are formed in two sides of the runner plate, protrusions are fixedly connected to two sides of the female die plate, and the protrusions are clamped with the grooves; As a further description of the above technical solution: The top of the female die plate is fixedly connected with a male die, and the top plate is connected to the outer part of the male die in a sliding manner; As a further description of the above technical solution: The outer part of the upper fixing plate is rotationally connected with a mold locking buckle, the outer part of the runner plate is fixedly connected with a clamping column, and the mold locking buckle is clamped with the clamping column; As a further description of the above technical solution: The bottom fixedly connected with reference column of going up the fixed plate, the runner board with the locating hole has been seted up at the middle part of master model board, reference column sliding connection is in the middle part of locating hole. The utility model has the following beneficial effects: 1. According to the utility model, the movable block is matched with the empty groove in a clamping way, so that automatic loc