CN217802968U - A core pulling mold - Google Patents

Abstract

The utility model discloses a core-pulling mold, which comprises a first template, a second template and a needle-drawing mechanism; a cavity is formed in the first template; a core is arranged in the second template, and the core and the cavity jointly form a mold for injection molding. Injection molding cavity; the needle pulling mechanism includes pins and driving parts for driving the pins. The driving parts are located on the sides of the first template and the second template. The driving parts are connected with the pins and drive the pins to reciprocate in the injection cavity. . When the product needs to be injected, the first template and the second template are first combined, and then the driver drives the pin into the injection cavity formed by the core and the cavity, and then injects hot material into the injection cavity. Flowing lead material and other injection molding materials, after the injection molding materials cool down, the driver drives the pins away from the injection molding cavity, and finally, the first template and the second template are separated from each other, and then the finished product is taken out. The utility model can manufacture long holes integrally without secondary processing, thereby improving efficiency.

Description

A core pulling mold

technical field

The utility model relates to the technical field of moulds, in particular to a core-pulling mould.

Background technique

When using molds to manufacture products, such as when molds are used to manufacture battery covers, it is usually necessary to make long holes on the inside of some battery covers to facilitate the installation and connection of the battery cover.

After the traditional mold is produced, the product usually needs to be processed twice, such as drilling the product to form a long hole, so as to make a product that meets the standard. However, the secondary processing of the product is easy to cause damage to the product, the precision of the secondary processing is low, the processing steps are cumbersome, and the efficiency is low, resulting in a long production cycle.

Utility model content

The utility model aims to solve one of the technical problems in the above-mentioned technologies at least to a certain extent. For this reason, the purpose of this utility model is to propose a kind of core-pulling mould, and it can make elongated hole integrally during injection molding, does not need secondary processing, thereby improves efficiency.

In order to achieve the above purpose, the embodiment of the utility model proposes a core-pulling mold, including a first template, a second template and a needle-pulling mechanism;

forming a cavity in the first template;

A core is arranged in the second template, and the core and the cavity jointly form an injection cavity for injection molding;

The needle-drawing mechanism includes a pin and a driving part for driving the pin. The driving part is located on the side of the first template and the second template. The driving part is connected with the pin and drives the pin to reciprocate in the injection molding cavity.

According to a core-pulling mold according to an embodiment of the present invention, when a product needs to be injected, the first template and the second template are combined with each other, and then the driver drives the pin into the injection cavity formed by the core and the cavity. Next, inject hot material into the injection molding cavity, such as injection molding materials such as flowable lead materials. After the injection molding materials cool down, the driver drives the pins away from the injection molding cavity. Finally, the first template and the second template are separated from each other, and then Take out the finished product.

In addition, a core-pulling mold proposed according to the above-mentioned embodiments of the present invention may also have the following additional technical features:

Further, a stem is arranged in the injection molding cavity, and a through hole is arranged in the stem, and the driving member drives the pin to insert or pass through the through hole.

Further, the stem includes an installation part and a cylinder part, the installation part is installed on the first template, the cylinder part is integrally connected with the installation part, the cylinder part is located in the injection molding cavity, and the perforation passes through the cylinder part.

Further, the stem includes a plurality of first stems and a plurality of second stems arranged side by side with the first stems, and the pins include first pins and second pins arranged side by side with the first pins; The first pins are inserted into or passed through the through holes of the plurality of first stems, and the second pins are inserted into or passed out of the through holes of the plurality of second stems.

Further, a guide insertion assembly is provided at the front end of the driver, and the guide insertion assembly can be partially inserted into the injection molding cavity, and the pin is inserted into the injection molding cavity through the guide insertion assembly.

Further, the guide insertion assembly includes a chute, a slider, a driving block and an insertion rod; the chute is fixed on the second template, the slider can be slidably arranged on the chute, a chute is arranged on the slider, and one end of the driving block is connected to the first The templates are connected, the other end of the driving block is inserted into the chute, the driving block is close to the second template to drive the slider close to the injection cavity, the driving block is away from the second template to drive the slider away from the injection cavity, the insertion rod is set on the slider, and As the slider moves, the plunger can be inserted into or out of the injection molding cavity.

Further, a groove is provided in the slide block, an elastic member is arranged in the groove, one end of the elastic member abuts against the groove bottom of the groove, and the other end of the elastic member is used to abut against the side wall of the first template.

Further, a guide hole is provided in the inserting rod and the slide block, and the driving part drives the pin to pass through the guide hole before being inserted into the injection molding cavity.

Further, mounting brackets are provided on the sides of the first template and the second template, the driving part is fixed on the mounting frame, and the movable end of the driving part is connected to the pin.

Further, channels for cooling are provided in the pins.

Description of drawings

Fig. 1 is a schematic structural view of a core-pulling mold according to an embodiment of the present invention;

Fig. 2 is an exploded view of a core-pulling mold according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of the connection between the needle pulling mechanism and the guide insertion assembly according to the embodiment of the present invention;

Fig. 4 is an exploded view of another angle of the needle pulling mechanism according to the embodiment of the present utility model;

FIG. 5 is a schematic structural view of a battery cover according to an embodiment of the present invention.

Label description

The first template 1, cavity 11;

The second template 2, the core 21, the stem 22, the perforation 221, the installation part 222, the column part 223, the first stem 224, the second stem 225;

Needle pulling mechanism 3, pin 31, first pin 311, second pin 312, driver 32;

Battery cover 4, connecting column 41, strip hole 42;

Guide insertion assembly 5, chute 51, slider 52, chute 521, groove 522, drive block 53, insertion rod 54, elastic member 55;

Mounting frame6.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

As shown in Figures 1 to 5, a core-pulling mold according to an embodiment of the present invention includes a first template 1, a second template 2, and a needle-drawing mechanism 3; a cavity 11 is formed in the first template 1; the second template 2. A core 21 is arranged inside, and the core 21 and the cavity 11 jointly form an injection molding cavity for injection molding.

The needle pulling mechanism 3 includes a pin 31 and a driver 32 for driving the pin 31 to move. The driver 32 is located on the side of the first template 1 and the second template 2. The driver 32 is connected to the pin 31 and drives the pin 31 to move. Reciprocating motion in the injection cavity.

When an injection molding product is required, the first template 1 and the second template 2 are first combined with each other, and then the driving member 32 drives the pin 31 into the injection cavity formed by the core 21 and the cavity 11, and then injects into the injection cavity Hot material, such as injection molding material such as lead material that can be injected into the flow, after the injection molding material cools down, the driving member 32 drives the pin 31 away from the injection molding cavity, wherein the driving member 32 can be a driving cylinder, and finally, the first template 1 and the second The two templates 2 are separated from each other, and then the manufactured product is taken out. Some smaller products can be taken out by manipulators, and some larger products can be taken out manually.

In this example, the product is the battery cover 4 as an example, of course, other types of injection molding products may also be used.

Optionally, a stem 22 is set in the injection molding cavity, and a perforation 221 is set in the stem 22, and the driver 32 drives the pin 31 to insert or pass through the perforation 221, that is to say, by setting the stem 22 in the injection molding cavity, the battery The cover 4 has a connecting column 41, and a connecting hole is formed axially in the connecting column 41. In order to facilitate the installation and connection of the battery cover 4, the prior art is to drill holes on the side wall of the connecting column 41 after the battery cover 4 is produced. , and in this embodiment, the pin 31 is inserted into the through hole 221, and after the injection molding is cooled, the pin 31 is kept away from the perforation 221, so that the manufactured product has a long hole 42 without secondary processing, thereby greatly improving the efficiency , cost reduction, and the elongated hole 42 of the manufactured battery cover 4 has high precision.

In some examples, the stem 22 includes a mounting portion 222 and a cylindrical portion 223, the mounting portion 222 is installed on the first template 1, the cylindrical portion 223 is integrally connected with the mounting portion 222, the cylindrical portion 223 is located in the injection molding cavity, and is perforated. 221 runs through the column part 223 . The column part 223 can be detachably disposed on the installation part 222 , so as to facilitate the installation and replacement of the stem 22 .

As an example, the stem 22 includes a plurality of first stems 224 and a plurality of second stems 225 arranged side by side with the plurality of first stems 224, and the pins 31 include first pins 311 and the first pins 311 311 second pins 312 arranged side by side; the first pins 311 are inserted into or passed through the through holes 221 of the plurality of first stems 224 , and the second pins 312 are inserted into or passed through the through holes 221 of the plurality of second stems 225 . In this example, there are three first stems 224, and the first pins 311 are sequentially inserted into or passed through the through holes 221 of the three first stems 224, and the number of second stems 225 is also three, and the second pins 312 are inserted or passed through the through holes 221 of the three second stems 225 in sequence.

In some examples, the front end of the driver 32 is provided with a guide insertion assembly 5 , which can be partially inserted into the injection molding cavity, and the pin 31 is inserted into the injection molding cavity through the guide insertion assembly 5 . Wherein, the guide insertion assembly 5 includes a chute 51, a slide block 52, a drive block 53 and an insertion rod 54; the chute 51 is fixed on the second template 2, and the slide block 52 is slidably arranged on the chute 51, and on the slide block 52 A chute 521 is provided, and the slant direction of the chute 521 is such that the chute 521 gradually moves away from the injection molding cavity from the first template 1 to the second template 2 . One end of the driving block 53 is connected to the first template 1, the other end of the driving block 53 is inserted into the chute 521, the driving block 53 is close to the second template 2 to drive the slider 52 close to the injection cavity, and the driving block 53 is far away from the second template 2 to drive the slider 52 is away from the injection molding cavity, and the insertion rod 54 is arranged on the slider 52 and moves with the movement of the slider 52, and the insertion rod 54 can be inserted into or separated from the injection molding cavity.

When the mold is opened, that is, when the first template 1 moves away from the second template 2, the first template 1 drives the driving block 53 away from the second template 2, and the driving block 53 drives the slider 52 along the sliding path away from the second template 2. The groove 51 moves, and makes the slide block 52 away from the injection molding cavity, thereby facilitating the insertion rod 54 to move out from the product body, and facilitating the demoulding of the product. And when mold closing, that is, when the first template 1 moves toward the direction close to the second template 2, the first template 1 drives the drive block 53 close to the second template 2, and the drive block 53 drives the slide block 52 along the second template 2. The chute 51 moves and makes the slide block 52 close to the injection molding cavity, so that the insertion rod 54 is conveniently inserted into the injection molding cavity, and the product is formed conveniently.

In this example, a groove 522 is provided in the slider 52, and an elastic member 55 is arranged in the groove 522. One end of the elastic member 55 abuts against the groove bottom of the groove 522, and the other end of the elastic member 55 is used to abut against the first template 1 side wall. Wherein, the elastic member 55 may be a compression spring, and the compression of the spring makes the slider 52 have a tendency to move away from the injection molding cavity, thereby making the mold opening smoother.

In order to facilitate the insertion of the pins 31 , guide holes are provided in the insert rod 54 and the slider 52 , and the driver 32 drives the pins 31 through the guide holes before being inserted into the injection molding cavity.

In order to facilitate the installation of the driver 32 , a mounting frame 6 is provided on the sides of the first template 1 and the second template 2 , the driver 32 is fixed on the mounting frame 6 , and the movable end of the driver 32 is connected to the pin 31 .

In this example, a cooling channel for cooling is provided in the pin 31, and a cooling nozzle can be provided on the side of the pin 31. The cooling nozzle communicates with the cooling channel, and the cold water enters or the water is separated from the pin 31 through the cooling nozzle. Thereby, cooling of the product is facilitated, and the elongated holes 42 formed have higher precision.

The above-mentioned embodiments and drawings do not limit the product form and style of the present utility model, and any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present utility model.

Claims (10)

1. A core-pulling mold, characterized in that: comprising a first template, a second template and a needle-pulling mechanism; forming a cavity in the first template; A core is arranged in the second template, and the core and the cavity jointly form an injection cavity for injection molding; The needle-drawing mechanism includes a pin and a driving part for driving the pin. The driving part is located on the side of the first template and the second template. The driving part is connected with the pin and drives the pin to reciprocate in the injection molding cavity. 2 . The core-pulling mold according to claim 1 , wherein a stem is arranged in the injection cavity, and a perforation is arranged in the stem, and the driving member drives the pin to insert or pass through the hole. 3. The core-pulling mold according to claim 2, characterized in that: the core column includes a mounting part and a cylinder part, the mounting part is installed on the first template, the cylinder part and the mounting part are integrally connected, and the cylinder part is located in the injection molding In the cavity, the perforation runs through the cylinder part. 4. The core-pulling mold according to claim 3, characterized in that: the stem includes a plurality of first stems and a plurality of second stems arranged side by side with the plurality of first stems, and the pins include first pins Needles and second pins arranged side by side with the first pins; the first pins are inserted into or passed through the through holes of the plurality of first stems, and the second pins are inserted into or passed through the through holes of the plurality of second stems. 5. The core-pulling mold according to claim 1, wherein a guide insertion assembly is provided at the front end of the driving member, the guide insertion assembly can be partially inserted into the injection molding cavity, and the insertion pin is inserted into the injection molding cavity through the guide insertion assembly. 6. The core-pulling mold according to claim 5, characterized in that: the guide insertion assembly includes a chute, a slider, a driving block and an insertion rod; the chute is fixed on the second formwork, and the slider is slidably arranged on the chute Above, a chute is set on the slider, one end of the driving block is connected to the first template, the other end of the driving block is inserted into the chute, the driving block is close to the second template to drive the slider close to the injection cavity, and the driving block is far away from the second template to drive the slider Away from the injection molding cavity, the insertion rod is arranged on the slider and moves with the movement of the slider, and the insertion rod can be inserted into or out of the injection molding cavity. 7. The core pulling mold according to claim 6, characterized in that: a groove is arranged in the slider, an elastic member is arranged in the groove, one end of the elastic member is against the groove bottom of the groove, and the other end of the elastic member is used to resist against the first template side wall. 8 . The core-pulling mold according to claim 7 , wherein guide holes are provided in the insert rod and the slider, and the driver drives the pins through the guide holes before being inserted into the injection molding cavity. 9. The core-pulling mold according to claim 1, characterized in that: mounting frames are provided on the sides of the first template and the second template, the driving part is fixed on the mounting frame, and the movable end of the driving part is connected to the pin. 10. The core-pulling mold according to claim 1, characterized in that: a channel for cooling is provided in the pin.

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