CN224210420U

CN224210420U - An automatic locking structure for a three-layer mold

Info

Publication number: CN224210420U
Application number: CN202521083185.7U
Authority: CN
Inventors: 张作宏; 李志陆; 孟超
Original assignee: Aisim Dalian Precision Manufacturing Co ltd
Current assignee: Aisim Dalian Precision Manufacturing Co ltd
Filing date: 2025-05-29
Publication date: 2026-05-08
Anticipated expiration: 2035-05-29

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.

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 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.

2. According to the utility model, the electric push rod pushes the mounting plate to drive the ejector pin and the top plate to perform demolding treatment on the product, the demolding force is uniformly distributed at the bottom of the product, deformation or damage caused by local stress concentration is avoided, precise and controllable demolding action is realized, and the production period is shortened.

Drawings

Fig. 1 is a schematic perspective view of an automatic locking structure of a three-layer mold according to the present utility model;

fig. 2 is a schematic structural diagram of a mold locking buckle of an automatic locking structure of a three-layer mold according to the present utility model;

FIG. 3 is a schematic view of a spring I of an automatic locking structure of a three-layer mold according to the present utility model;

fig. 4 is a schematic structural view of a male die with an automatic locking structure of a three-layer die according to the present utility model;

Fig. 5 is a schematic structural view of a movable block of an automatic locking structure of a three-layer mold according to the present utility model.

Legend description:

1. The upper fixing plate, 2, the runner plate, 3, the female template, 4, the shell, 5, the mounting plate, 6, the locating hole, 7, the plastic inlet, 8, the mold locking buckle, 9, the clamping post, 10, the connecting rod, 11, the base, 12, the groove, 13, the bulge, 14, the first spring, 15, the pressing block, 16, the electric push rod, 17, the male die, 18, the top plate, 19, the thimble, 20, the empty slot, 21, the movable block, 22, the second spring, 23, the fixing rod, 24, the third spring, 25, the fixing block, 26 and the locating post.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, 2, 3 and 5, the utility model provides an automatic locking structure of a three-layer mold, which comprises an upper fixed plate 1, a runner plate 2 and a female mold plate 3, wherein the bottom of the female mold plate 3 is fixedly connected with a base 11, a locking component is arranged outside the base 11, a demolding component is arranged in the middle of the female mold plate 3, the top of the upper fixed plate 1 is fixedly connected with a plastic inlet 7, the locking component comprises a shell 4, the shell 4 is fixedly connected with the outer side of the base 11, the middle of the shell 4 is rotationally connected with a movable block 21, the outer part of the runner plate 2 is fixedly connected with a connecting rod 10, a hollow groove 20 is formed in the connecting rod 10, the connecting rod 10 is slidingly connected with the middle of the shell 4, and the end of the movable block 21 is clamped with the hollow groove 20. The locking assembly further comprises a fixed block 25, the fixed block 25 is in contact with the top of the movable block 21, the top of the fixed block 25 is fixedly connected with a pressing block 15, and the pressing block 15 is slidably connected to the middle of the shell 4. The bottom of connecting rod 10 is provided with dead lever 23, and the bottom fixedly connected with spring three 24 of dead lever 23, the inside fixedly connected with spring two 22 of casing 4, and the top of spring two 22 contacts with the bottom of movable block 21, and when runner board 2 moved down, connecting rod 10 inserted casing 4, movable block 21 blocked the empty slot 20 of connecting rod 10 under the effect of spring two 22, the relative position of locking runner board 2 and base 11 realizes the locking of runner board 2 and female die board 3. The arrangement of the second spring 22 and the third spring 24 provides stable elastic force support for the action of the movable block 21, so that the locking and unlocking processes are more stable and reliable, damage to the die caused by impact and vibration between parts is reduced, and the service life of the die is prolonged. The recess 12 has all been seted up to the both sides of runner board 2, and the both sides fixedly connected with arch 13 of master model board 3, protruding 13 and recess 12 looks joint, and runner board 2 passes through recess 12 and protruding 13 joint with master model board 3, reinforcing lateral stability, template dislocation when avoiding moulding plastics promotes goods dimensional accuracy and surface quality. The outside rotation of going up fixed plate 1 is connected with mode locking knot 8, and the outside fixedly connected with card post 9 of runner board 2, mode locking knot 8 and card post 9 looks joint. The bottom fixedly connected with reference column 26 of going up fixed plate 1, locating hole 6 has been seted up at runner plate 2 and the middle part of master template 3, and reference column 26 sliding connection is at the middle part of locating hole 6, and the reference column 26 of going up the fixed plate inserts runner plate 2 and the locating hole 6 of master template 3, accurate counterpoint when guaranteeing the three-layer template compound die, reduces the shaping deviation.

Referring to fig. 1-4, 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. The top of the female die plate 3 is fixedly connected with a male die 17, a top plate 18 is slidably connected to the outer part of the male die 17, when injection molding is completed, an electric push rod 16 stretches out to push a mounting plate 5 to move upwards, the mounting plate 5 drives a thimble 19 to ascend together, the top plate 18 at the top of the thimble 19 contacts with a molded product and applies upward force, so that the product is ejected from the male die 17, and when the product is ejected, the electric push rod 16 stops working and starts retracting. At this time, the spring one 14 releases the stored elastic potential energy to drive the top plate 18 and the ejector pin 19 to move downwards, so that the top plate and the ejector pin return to the initial positions and are ready for the next injection molding. By driving the electric push rod 16, the product can be rapidly and accurately ejected from the die, the production efficiency is improved, and the automatic production process is suitable for automatic production.

The working principle is that when the female template 3 and the runner plate 2 move towards the upper fixing plate 1, the positioning columns 26 are inserted into the positioning holes 6 of the runner plate 2 and the female template 3, so that accurate alignment of the three-layer template is ensured, the mold locking buckle 8 is attached to the runner plate 2, and the mold locking buckle 8 rotates and is clamped with the clamping columns 9, so that the upper fixing plate 1 and the runner plate 2 are realized.

When the runner plate 2 moves downwards, the connecting rod 10 is inserted into the shell 4, the movable block 21 is clamped into the empty groove 20 of the connecting rod 10 under the action of the second spring 22, and the relative position of the runner plate 2 and the base 11 is locked, so that the runner plate 2 and the female die plate 3 are locked. When the runner plate 2 and the female die plate 3 are to be opened, the pressing block 15 needs to be pressed to drive the fixed block 25 to press the movable block 21 downwards, so that the front end of the movable block 21 is separated from the empty groove 20. Grooves 12 on two sides of the runner plate 2 are clamped with protrusions 13 of the female die plate 3, so that lateral alignment of the die plates is further ensured, and dislocation during injection molding is prevented.

The electric push rod 16 stretches out to push the mounting plate 5 and the ejector pins 19 to move upwards, so that the ejector pins 19 drive the top plate 18 to move upwards to eject the product from the male die 17.

It should be noted that the foregoing description is only a preferred embodiment of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it should be understood that modifications, equivalents, improvements and modifications to the technical solution described in the foregoing embodiments may occur to those skilled in the art, and all modifications, equivalents, and improvements are intended to be included within the spirit and principle of the present utility model.

Claims

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. 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. 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. 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. 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. 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. 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. 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).