CN219667334U

CN219667334U - One-time molding injection mold for perforated workpiece

Info

Publication number: CN219667334U
Application number: CN202321266046.9U
Authority: CN
Inventors: 严越波; 路嘉渊; 刘敏
Original assignee: Changzhou Shengyue Molding Co ltd
Current assignee: Changzhou Shengyue Molding Co ltd
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-09-12
Anticipated expiration: 2033-05-23

Abstract

The utility model relates to the technical field of molds, in particular to a one-time molding injection mold for a perforated workpiece, which comprises the following components: the injection molding device comprises a mold main body, a mold cavity and an injection molding runner, wherein at least one molding cavity and the injection molding runner are arranged in the mold main body; a cutting assembly is arranged in the die main body, the cutting assembly comprises a plurality of cutters and movable seats, each cutter corresponds to the injection molding opening of the injection molding runner in the corresponding molding cavity, and the shape of the cutter edge corresponds to the shape of the hole of the corresponding perforated workpiece; after injection molding is completed, the material handle is connected with the residual material at the hole position, the movable seat moves towards one side where the molding cavity is located, and the cutter is driven to cut and separate the waste material at the hole position and the material handle formed in the injection molding runner together with the perforated workpiece along the shape of the hole; the waste can be directly removed after the die is opened, so that the perforated workpiece is molded at one time, the molding quality of the workpiece is effectively ensured, and meanwhile, the production efficiency is improved.

Description

One-time molding injection mold for perforated workpiece

Technical Field

The utility model relates to the technical field of molds, in particular to a one-time molding injection mold for a perforated workpiece.

Background

Injection molding is a process used in mass production of parts of complex shape. The specific principle is as follows: and pushing the heated and melted plastic raw material by a screw rod of an injection molding machine to inject the heated and melted plastic raw material into a molding cavity of a plastic mold under high pressure, and cooling and solidifying the heated and melted plastic raw material to obtain a plastic molding product.

When the tape Kong Zhijian is injection molded, the tape is molded in the following two modes, namely a side glue feeding mode or a point glue feeding mode is adopted, a hole structure is directly formed when a mold core and a cavity are arranged, but in the molding process, molten plastic raw materials need to bypass the middle hole position when entering the cavity from a runner, and molded products are easy to produce welding marks, so that the appearance is attractive and the strength of the molded products is influenced; the other mode is directly through injection mold with the finished piece form complete dull and stereotyped structure, after the shaping is accomplished, the manual work is cut the hole shape through extra excision mechanism and is formed, and this kind of mode can avoid the formation of weld trace, but need carry out secondary operation, and is time consuming and labor consuming.

The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: the one-time molding injection mold for the perforated workpiece is provided, and the problems pointed out in the background art are effectively solved.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a one-time molding injection mold for a foraminous article, comprising: the die comprises a die body, wherein at least one molding cavity and an injection runner are arranged in the die body, the molding cavity is matched with the outline of the outer edge of the belt Kong Zhijian, and an injection port of the injection runner is communicated with a hole position of a corresponding perforated workpiece in the molding cavity;

the cutting assembly comprises a plurality of cutters and movable seats, wherein the movable seats are arranged in the die main body in a sliding manner relative to the die main body, each cutter corresponds to the injection molding opening of the injection molding runner in the corresponding molding cavity, and the shape of a cutter edge corresponds to the shape of a hole of a corresponding perforated workpiece; the movable seat moves towards one side of the forming cavity to drive the cutter to cut and separate waste materials at the hole and material handles formed in the injection molding runner together with the perforated workpiece along the shape of the hole.

Further, the die main body further comprises a movable die core and a fixed die core, wherein the movable die core and the fixed die core are respectively positioned in the movable die plate and the fixed die plate, and the forming cavity is formed during die assembly.

Furthermore, the movable die plate is movably connected with the fixed die plate through a guide post, so that the opening and closing of the die cavity are realized.

Further, the movable seat comprises a first fixed plate and a first base plate, the cutter is arranged in a step hole of the first fixed plate, the die main body comprises a movable die base plate, and the first base plate is arranged between the first fixed plate and the movable die base plate.

Further, the die main body further comprises an ejection assembly, the ejection assembly comprises a movable seat and a plurality of ejector pins fixed on the movable seat, the movable seat is arranged in a sliding manner relative to the die main body, each forming cavity is at least provided with two ejection holes in a corresponding manner, each ejection hole is internally provided with an ejector pin in a corresponding manner, and the movable seat drives the ejector pins to move along the ejection holes.

Further, the movable seat comprises a second fixed plate and a second base plate, the ejector pin is fixed in a step hole of the second fixed plate, and the second base plate is connected with the first fixed plate and the second fixed plate.

Further, a plurality of first guide rods are arranged on the first fixing plate, first guide holes matched with the first guide rods are formed in the ejection assembly, and the first guide rods are connected with the ejection assembly through the first guide holes.

Further, a reset assembly is arranged between the movable mould plate and the ejection assembly, the reset assembly comprises a plurality of elastic pieces and a second guide rod, the second guide rod is fixedly connected with the movable mould plate and the ejection assembly, each elastic piece is respectively sleeved on the corresponding second guide rod, and two ends of each elastic piece are respectively limited between the ejection assembly and the movable mould plate.

Further, a fixed die seat plate and a positioning ring are sequentially arranged on one side, away from the fixed die core, of the fixed die plate, a groove body is formed in the fixed die core, the fixed die plate and the fixed die seat plate to form an injection molding runner, and the center line of the positioning ring coincides with the center line of the injection molding runner.

Further, the forming cavity is provided with four.

The beneficial effects of the utility model are as follows: according to the utility model, the injection molding opening of the injection molding runner is arranged at the hole position of the workpiece, after injection molding is finished, the material handle is connected with the residual material at the hole position, and the movable seat drives the cutter to act, so that the waste material at the hole position and the material handle in the injection molding runner can be cut and separated together, and the waste material can be removed directly after the die is opened, so that the workpiece with the hole is molded at one time, the molding quality of the workpiece is effectively ensured, and meanwhile, the production efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

Fig. 1 is a schematic structural diagram of an injection molding die for one-time molding with a tape Kong Zhijian according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of the tape Kong Zhijian in an embodiment of the utility model when the tape Kong Zhijian is cut from scrap by a one-time molding injection mold;

FIG. 3 is a schematic view of a structure of the utility model with a Kong Zhijian injection mold ejecting a part in one-step molding;

FIG. 4 is a schematic illustration of a belt Kong Zhijian forming process in accordance with an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a mold structure of a mold cavity according to an embodiment of the present utility model;

fig. 6 is a schematic diagram of a mold structure with four cavities according to an embodiment of the present utility model.

Reference numerals: 01. a movable mold core; 02. a fixed mould core; 03. a movable template; 04. a stationary mold plate; 05. a guide post; 06. a movable die base plate; 07. a fixed die seat plate; 08. a positioning ring; 1. a molding cavity; 2. injection molding a runner; 2a, an injection molding port; 2b, material handle; 3. a tape Kong Zhijian; 3a, holes; 3b, waste; 10. cutting off the assembly; 11. a cutter; 12. a movable seat; 12a, a first fixing plate; 12b, a first backing plate; 13. a first guide bar; 20. an ejection assembly; 21. a thimble; 22. a movable seat; 22a, a second fixing plate; 22b, a second backing plate; 30. a reset assembly; 31. an elastic member; 32. and a second guide bar.

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.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The one-time molding injection mold for the perforated product shown in fig. 1 to 6 comprises: the injection molding device comprises a mold main body, wherein at least one molding cavity 1 and an injection molding runner 2 are arranged in the mold main body, the molding cavity 1 is matched with the outline of the outer edge of a perforated workpiece 3, and an injection molding port 2a of the injection molding runner 2 is communicated with a hole 3a of the molding cavity 1 corresponding to the perforated workpiece 3;

a cutting assembly 10 is arranged in the die main body, the cutting assembly 10 comprises a plurality of cutters 11 and a movable seat 12, the movable seat 12 is arranged in a sliding manner relative to the die main body, each cutter 11 corresponds to the position of an injection molding port 2a corresponding to an injection molding runner 2 in a molding cavity 1, and the shape of a cutter edge corresponds to the shape of a hole 3a corresponding to a piece 3 with a hole; the movable seat 12 moves towards one side of the forming cavity 1, and drives the cutter 11 to cut and separate the waste 3b at the hole 3a and the material handle 2b formed in the injection runner 2 together with the perforated workpiece 3 along the shape of the hole 3 a.

According to the utility model, the injection molding opening 2a of the injection molding runner 2 is arranged at the position of the hole 3a of the workpiece, after injection molding is finished, the material handle 2b is connected with the remainder at the position of the hole 3a, and the movable seat 12 drives the cutter 11 to act, so that the waste 3b at the position of the hole 3a and the material handle 2b in the injection molding runner 2 can be cut and separated together, and the waste 3b can be removed directly after die sinking, so that the perforated workpiece 3 is molded at one time, the molding quality of the workpiece is effectively ensured, and the production efficiency is improved.

It should be noted that, the molding cavity 1 may be a single molding cavity 1 or multiple molding cavities 1, in this embodiment, a one-mold one-cavity structure is adopted to illustrate, and of course, other molding cavity 1 structures, such as a one-mold four-cavity structure and a one-mold two-cavity structure, may be adopted, and different gate forms, such as a dispensing opening, a disc gate, etc., may be adaptively set according to different molding cavity 1 structures; however, the number of the molding cavities 1 may be set according to the actual molding requirements, and is not limited to the number in the present embodiment.

On the basis of the above embodiment, the mold main body further includes a movable mold core 01 and a fixed mold core 02, the movable mold core 01 and the fixed mold core 02 are respectively located in the movable mold plate 03 and the fixed mold plate 04, and form a molding cavity 1 during mold closing, and the movable mold core 01 and the fixed mold core 02 are mutually separated along with the separation action of the movable mold plate 03 and the fixed mold plate 04 during mold opening, so that the mold opening is facilitated, and the molded piece 3 with holes after injection molding is taken out.

On the basis of the embodiment, the movable mold plate 03 and the fixed mold plate 04 are movably connected through the guide post 05, so that the molding cavity 1 is opened and closed, the guiding effect during mold opening and mold closing is ensured, the movable mold core 01 and the fixed mold core 02 after mold closing can be aligned to form the structure of the molding cavity 1, and the molding quality of a workpiece is ensured.

On the basis of the above embodiment, the movable base 12 includes the first fixed plate 12a and the first pad plate 12b, the cutter 11 is disposed in the stepped hole of the first fixed plate 12a, the mold main body includes the movable mold base plate 06, and the first pad plate 12b is disposed between the first fixed plate 12a and the movable mold base plate 06; when the movable seat 12 moves relative to the movable mold seat plate 06, the cutter 11 on the first fixed plate 12a is driven to move towards one side where the molding cavity 1 is located, and as the shape of the edge of the cutter 11 is matched with the shape of the hole 3a of the workpiece, the cutter 11 can directly separate the waste 3b connected with the hole 3a and the material handle 2b formed in the injection molding runner 2 from the workpiece 3 with holes, so that the workpiece 3 with holes with good molding quality can be directly obtained at one time after mold opening, and the waste 3b does not need to be manually removed.

On the basis of the embodiment, the mold main body further comprises an ejection assembly 20, the ejection assembly 20 comprises a movable seat 22 and a plurality of ejector pins 21 fixed on the movable seat 22, the movable seat 22 is arranged in a sliding manner relative to the mold main body, each molding cavity 1 is at least correspondingly provided with two ejection holes, each ejection hole is internally correspondingly provided with one ejector pin 21, the movable seat 22 drives the ejector pins 21 to move along the ejection holes, so that a molded part 3 with holes after injection molding is conveniently ejected from the molding cavity 1, and the mold stripping action is realized simply and conveniently.

On the basis of the above embodiment, the moving seat 22 includes the second fixing plate 22a and the second backing plate 22b, the ejector pin 21 is fixed in the step hole of the second fixing plate 22a, the second backing plate 22b connects the first fixing plate 12a and the second fixing plate 22a, after the cutter 11 cuts and separates the scrap 3b at the hole 3a and the material bundle 2b in the runner from the perforated workpiece 3, the moving seat 22 moves relatively to one side of the fixed die 04, so that the second backing plate 22b drives the ejector pin 21 to move towards the forming cavity 1 and contact with the belt Kong Zhijian 3 in the forming cavity 1, and is ejected along with the moving process.

It should be noted that, because a space for the cutter 11 to move is reserved between the movable seat 22 and the movable seat 12, when the cutter 11 cuts off the connection structure between the waste 3b at the hole 3a and the workpiece, the movable seat 12 will be attached to the movable seat 22, and at this time, the movable seat 12 continues to move to push the movable seat 22 to move relatively to one side of the fixed mold 04, so as to eject the molded workpiece 3 with holes.

On the basis of the above embodiment, in order to ensure the guiding function in the cutting-off and separating process of the cutter 11, a plurality of first guide rods 13 are arranged on the first fixing plate 12a, first guide holes matched with the first guide rods 13 are arranged on the ejection assembly 20, and the first guide rods 13 are connected with the ejection assembly 20 through the first guide holes, so that the moving process of cutting-off of the cutter 11 is ensured to move along the axial direction of the first guide holes, and the accuracy of the cut position is ensured.

On the basis of the above embodiment, in order to ensure the guiding function of the ejection process after the molded product 3 with holes is ejected, a reset assembly 30 is disposed between the movable mold plate 03 and the ejection assembly 20, the reset assembly 30 includes a plurality of elastic members 31 and second guide rods 32, the second guide rods 32 are fixedly connected with the movable mold plate 03 and the ejection assembly 20, each elastic member 31 is respectively sleeved on the corresponding second guide rod 32, and two ends of each elastic member are respectively limited between the ejection assembly 20 and the movable mold plate 03, so that the movement of the ejector pins 21 along the axial direction of the second guide holes in the process of pushing the product to move out is ensured, and smooth demolding of the product is ensured.

On the basis of the embodiment, the fixed die plate 04 is provided with the fixed die seat plate 07 and the positioning ring 08 on one side which is away from the fixed die core 02, the fixed die core, the fixed die plate 04 and the fixed die seat plate 07 are provided with grooves to form the injection molding runner 2, the central line of the positioning ring 08 coincides with the central line of the injection molding runner 2, and the positioning ring 08 can complete the coincidence alignment work of the central line of the nozzle and the central line of the main runner in the injection molding runner 2 as soon as possible, so that the installation of the die is convenient.

It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. One-time molding injection mold for a perforated workpiece, which is characterized by comprising: the die comprises a die body, wherein at least one molding cavity and an injection runner are arranged in the die body, the molding cavity is matched with the outline of the outer edge of the belt Kong Zhijian, and an injection port of the injection runner is communicated with a hole position of a corresponding perforated workpiece in the molding cavity;

2. The injection mold for one-time molding of a perforated article according to claim 1, wherein the mold body further comprises a movable mold insert and a fixed mold insert, the movable mold insert and the fixed mold insert being respectively located in a movable platen and a fixed platen, and the molding cavity being formed when the mold is closed.

3. The injection mold for one-time molding of a perforated article according to claim 2, wherein the movable mold plate and the fixed mold plate are movably connected by a guide post, so that the opening and closing of the cavity are realized.

4. The injection mold for one-time molding of a perforated article according to claim 2, wherein the movable base comprises a first fixed plate and a first base plate, the cutter is disposed in a stepped hole of the first fixed plate, the mold body comprises a movable mold base plate, and the first base plate is disposed between the first fixed plate and the movable mold base plate.

5. The injection mold for one-time molding of a molded article with holes according to claim 4, wherein the mold body further comprises an ejection assembly, the ejection assembly comprises a movable seat and a plurality of ejector pins fixed on the movable seat, the movable seat is slidably disposed relative to the mold body, each molding cavity is provided with at least two ejection holes, each ejection hole is provided with an ejector pin, and the movable seat drives the ejector pins to move along the ejection holes.

6. The injection mold of claim 5 wherein the movable base comprises a second fixed plate and a second backing plate, the ejector pin is fixed in a stepped hole of the second fixed plate, and the second backing plate connects the first fixed plate and the second fixed plate.

7. The injection mold for one-time molding of a perforated article according to claim 5, wherein the first fixing plate is provided with a plurality of first guide rods, the ejection assembly is provided with first guide holes matched with the first guide rods, and the first guide rods are connected with the ejection assembly through the first guide holes.

8. The injection mold for one-time molding of a perforated product according to claim 5, wherein a reset assembly is provided between the movable mold plate and the ejection assembly, the reset assembly comprises a plurality of elastic members and a second guide rod, the second guide rod is fixedly connected with the movable mold plate and the ejection assembly, each elastic member is respectively sleeved on the corresponding second guide rod, and both ends of each elastic member are respectively limited between the ejection assembly and the movable mold plate.

9. The one-time molding injection mold of the perforated workpiece according to claim 2, wherein a fixed mold seat plate and a positioning ring are sequentially arranged on one side of the fixed mold plate, which is away from the fixed mold core, a groove body is formed on the fixed mold core, the fixed mold plate and the fixed mold seat plate to form an injection molding runner, and the center line of the positioning ring coincides with the center line of the injection molding runner.

10. The one-shot molding injection mold of claim 1 wherein said molding cavities are provided with four.