CN215550511U

CN215550511U - Injection mold with replaceable mold core

Info

Publication number: CN215550511U
Application number: CN202121413138.6U
Authority: CN
Inventors: 朱连香; 周华南; 黄平
Original assignee: Dongguan Dongfang Mould Co ltd
Current assignee: Dongguan Dongfang Mould Co ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2022-01-18
Anticipated expiration: 2031-06-24

Abstract

The utility model relates to an injection mold with a replaceable mold core, which comprises: the lower die assembly comprises a lower die plate, a lower die core, a limiting pressing plate, a fixing block, a connecting rod and a spring; one end of the spring is fixedly connected with the connecting rod, and the other end of the spring is abutted to the fixed block; the top of the lower template is provided with an accommodating cavity, and the accommodating cavity is used for accommodating and mounting the lower die core; the limiting pressing plate is used for abutting against the lower template so as to limit the lower mold core in the accommodating cavity. Above-mentioned injection mold of interchangeable mould benevolence, simple structure, convenient to use utilizes spacing clamp plate to come spacing lower mould benevolence, but through stirring spacing clamp plate quick replacement lower mould benevolence, only needs to change lower mould benevolence in order to adapt to different products, greatly reduced die sinking cost simplifies the change operation, effectively improves production efficiency.

Description

Injection mold with replaceable mold core

Technical Field

The utility model relates to the technical field of injection molds, in particular to an injection mold with a replaceable mold core.

Background

An injection mold is a tool for producing plastic products and also a tool for giving the plastic products complete structure and precise dimensions. Injection molding is a processing method used for mass production of parts with complex shapes, and particularly relates to a method for injecting heated and melted plastic into a mold cavity from an injection molding machine at high pressure, and obtaining a formed product after cooling and solidification.

The products of many manufacturers are designed modularly, many parts are made into roughly the same structure, and there are only slight differences, for example, many injection-molded products often have a plurality of products with basically identical shapes, one product has no holes, and the other product has through holes or grooves or is provided with bumps. At present, different injection molds are required to be designed and manufactured corresponding to different products, the mold opening cost is high, time is consumed, when different products are required to be produced, the corresponding injection molds need to be replaced in a whole mode, the operation is very complex and time-consuming, and the production efficiency can be reduced.

SUMMERY OF THE UTILITY MODEL

Based on the structure, the injection mold with the replaceable mold core is simple in structure and convenient to use, the lower mold core can be replaced quickly, the mold opening cost is reduced, the replacement operation is simplified, and the production efficiency is effectively improved.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

an injection mold with replaceable mold insert, comprising:

a lower die assembly; the lower die assembly comprises a lower die plate, a lower die core detachably mounted on the lower die plate, limiting press plates slidably mounted on two opposite sides of the lower die core, fixing blocks fixedly mounted on two opposite sides of the lower die plate, a connecting rod penetrating through the fixing blocks and connected with the limiting press plates, and a spring sleeved at one end of the connecting rod, far away from the lower die core; one end of the spring is fixedly connected with the connecting rod, and the other end of the spring is abutted to the fixed block; the top of the lower template is provided with an accommodating cavity, and the accommodating cavity is used for accommodating and mounting the lower die core; the limiting pressing plate is used for abutting against the lower template so as to limit the lower mold core in the accommodating cavity.

Above-mentioned injection mold of interchangeable mould benevolence, simple structure, convenient to use utilizes spacing clamp plate to come spacing lower mould benevolence, but through stirring spacing clamp plate quick replacement lower mould benevolence, only needs to change lower mould benevolence in order to adapt to different products, greatly reduced die sinking cost simplifies the change operation, effectively improves production efficiency.

In one embodiment, the lower template is provided with sliding grooves corresponding to two opposite ends of each side edge of the accommodating cavity respectively; the limiting pressing plate comprises a pressing plate main body and sliding block parts connected to two opposite ends of the pressing plate main body; the pressing plate main body is used for abutting against the top surface of the lower die core, and the sliding block part is correspondingly inserted into the sliding groove so as to realize the sliding connection of the limiting pressing plate and the lower die plate.

In one embodiment, the injection mold with the replaceable mold core further comprises an upper mold assembly used for matching and abutting against the top of the lower mold assembly; the upper die assembly comprises an upper die plate and an upper die core arranged on the bottom surface of the upper die plate; the upper die plate is used for abutting against the lower die plate, and the upper die core is used for abutting against the limiting pressure plate; gaps among the upper die core, the lower die core and the limiting pressure plate form an injection molding cavity; and an injection molding hole is formed in the middle of the upper template and communicated with the injection molding cavity.

In one embodiment, the injection mold with the replaceable mold core further comprises positioning pressing blocks arranged on two opposite sides of the upper mold core; the positioning pressing block is used for abutting against the connecting rod; the middle part of the positioning pressing block is provided with a recess, and the recess is used for accommodating the connecting rod.

In one embodiment, a cooling liquid channel is formed inside the lower mold core, and a cooling liquid inlet pipe and a cooling liquid outlet pipe are connected to one surface, far away from the lower mold core, of the limiting pressure plate; the cooling liquid inlet pipe is connected with one end of the cooling liquid channel, and the cooling liquid outlet pipe is connected with the other end of the cooling liquid channel.

In one embodiment, the injection mold with the replaceable mold core further comprises a demolding assembly arranged at the bottom of the lower mold assembly; the demolding assembly comprises a bearing seat connected to the bottom of the lower template, a driving plate movably arranged between the bearing seat and the lower template, a plurality of ejector rods arranged on the driving plate at intervals, and a plurality of pressure springs arranged on two opposite sides of the top of the bearing seat; the pressure spring is clamped between the bearing seat and the lower template; the ejector rod is used for penetrating through the lower template and the lower die core and then protrudes and extends out of the top surface of the lower die core.

Drawings

FIG. 1 is a schematic perspective view of an injection mold with a replaceable core according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the internal structure of the core-replaceable injection mold shown in FIG. 1;

FIG. 3 is an exploded view of the mold insert changeable injection mold shown in FIG. 1;

FIG. 4 is an enlarged schematic view taken at circle A of FIG. 3;

FIG. 5 is a schematic view of the assembly of the limiting pressing plate, the connecting rod, the fixing block and the spring in the injection mold with the replaceable mold core shown in FIG. 3;

fig. 6 is a perspective view of another perspective view of the upper mold assembly in the mold insert changeable injection mold shown in fig. 3.

Reference is made to the accompanying drawings in which:

10-lower die assembly, 11-lower die plate, 110-containing cavity, 111-chute, 12-lower die core, 13-limiting pressing plate, 131-pressing plate main body, 132-sliding block part, 14-fixing block, 15-connecting rod, 16-spring, 17-cooling liquid inlet pipe, 18-cooling liquid outlet pipe and 19-guide column;

20-an upper die assembly, 21-an upper die plate, 22-an upper die core, 23-a positioning pressing block, 24-an injection molding hole, 25-a recess, 26-a passing groove and 27-a guide hole;

30-demoulding component, 31-bearing seat, 32-driving plate, 33-ejector rod and 34-pressure spring.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" 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," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 6, an injection mold with interchangeable cores according to an embodiment of the present invention includes a lower mold assembly 10, an upper mold assembly 20 for matching and abutting against a top of the lower mold assembly 10, and a mold stripping assembly 30 installed at a bottom of the lower mold assembly 10.

The lower die assembly 10 includes a lower die plate 11, a lower die core 12 detachably mounted on the lower die plate 11, limiting press plates 13 slidably mounted on two opposite sides of the lower die core 12, fixing blocks 14 fixedly mounted on two opposite sides of the lower die plate 11, a connecting rod 15 penetrating the fixing blocks 14 and then connected to the limiting press plates 13, and a spring 16 sleeved on one end of the connecting rod 15 far away from the lower die core 12. One end of the spring 16 is fixedly connected with the connecting rod 15, and the other end of the spring 16 abuts against the fixing block 14 to drive the limit pressing plate 13 to abut against the lower die core 12.

As shown in fig. 3 and 4, the top of the lower template 11 is opened with an accommodating cavity 110, and the accommodating cavity 110 is used for accommodating and installing the lower mold core 12. The lower template 11 is provided with two opposite ends corresponding to each side of the accommodating cavity 110, and the sliding grooves 111 are respectively used for slidably connecting the limiting pressing plate 13. Specifically, as shown in fig. 5, the limiting pressure plate 13 includes a pressure plate main body 131 and slider portions 132 connected to opposite ends of the pressure plate main body 131; the pressing plate main body 131 is used for abutting against the top surface of the lower mold core 12, and the sliding block portion 132 is correspondingly inserted into the sliding groove 111, so as to realize the sliding connection between the limiting pressing plate 13 and the lower mold plate 11. The connecting rod 15 is connected to the middle of one surface of the pressing plate main body 131 far away from the lower mold core 12, and under the action of the spring 16, the limiting pressing plate 13 always keeps abutting against the top surface of the lower mold core 12, so as to limit the lower mold core 12 in the accommodating cavity 110. When the lower die core 12 is replaced, external force is only needed to be applied to toggle the limiting pressing plate 13, so that the limiting pressing plate 13 is far away from the lower die core 12, the lower die core 12 can be replaced conveniently and quickly, and at the moment, the spring 16 is in a compressed state; after the lower mold core 12 is replaced, the external force is removed, the spring 16 is reset, and the spring 16 drives the limiting pressing plate 13 to abut against the new lower mold core 12, so that the new lower mold core 12 is limited in the accommodating cavity 110.

Further, in order to improve the heat dissipation efficiency, a cooling liquid channel (not shown) is formed inside the lower mold core 12, one side, away from the lower mold core 12, of the limiting pressing plate 13 is connected with a cooling liquid inlet pipe 17 and a cooling liquid outlet pipe 18, the cooling liquid inlet pipe 17 is connected with one end of the cooling liquid channel, and the cooling liquid outlet pipe 18 is connected with the other end of the cooling liquid channel, so that cooling liquid can flow through the limiting pressing plate 13 to dissipate heat. The connecting rod 15 is located between the cooling liquid inlet pipe 17 and the cooling liquid outlet pipe 18.

The lower die assembly 10 further comprises guide posts 19 connected to the opposite four corners of the top surface of the lower die plate 11, and the guide posts 19 are used for positioning and connecting the upper die assembly 20.

The upper die assembly 20 comprises an upper die plate 21, an upper die core 22 mounted on the bottom surface of the upper die plate 21, and positioning press blocks 23 mounted on two opposite sides of the upper die core 22. The upper template 21 is used for abutting against the lower template 11, and the upper mold core 22 is used for abutting against the limiting pressure plate 13; the clearance between the upper die core 22, the lower die core 12 and the limiting pressure plate 13 forms an injection molding cavity; the positioning press 23 is used to abut against the connecting rod 15. Injection molding hole 24 is seted up at the middle part of cope match-plate pattern 21, and injection molding hole 24 communicates the injection molding chamber to molten plastic raw materials flows the inside cooling shaping in injection molding chamber through injection molding hole 24, in order to form the product.

Specifically, as shown in fig. 6, a recess 25 is formed in the middle of the positioning pressing block 23, and the recess 25 is used for accommodating the connecting rod 15 to support the two opposite sides of the upper die plate 21. Further, as shown in fig. 6, in the present embodiment, the upper mold plate 21 is provided with two passing grooves 26 corresponding to the two opposite ends of each positioning pressing block 23, and the passing grooves 26 are respectively used for accommodating the cooling liquid inlet pipe 17 and the cooling liquid outlet pipe 18. The opposite four corners of the upper template 21 are respectively provided with guide holes 27, and the guide holes 27 correspond to the guide posts 19 one by one.

The demolding assembly 30 comprises a bearing seat 31 connected to the bottom of the lower template 11, a driving plate 32 movably arranged between the bearing seat 31 and the lower template 11, a plurality of ejector rods 33 arranged on the driving plate 32 at intervals, and a plurality of compression springs 34 arranged on two opposite sides of the top of the bearing seat 31; the compression spring 34 is clamped between the bearing seat 31 and the lower template 11. The ejector rod 33 is used for penetrating the lower template 11 and the lower mold core 12 and then protruding to exceed the top surface of the lower mold core 12 so as to lift the formed product and realize demolding.

Above-mentioned injection mold of interchangeable mould benevolence, simple structure, convenient to use utilizes spacing clamp plate 13 to come spacing lower mould benevolence 12, but through stirring spacing clamp plate 13 quick replacement lower mould benevolence 12, only needs to change lower mould benevolence 12 in order to adapt to different products, greatly reduced die sinking cost simplifies the change operation, effectively improves production efficiency.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides an injection mold of interchangeable mould benevolence which characterized in that includes:

2. The mold insert-replaceable injection mold of claim 1, wherein the lower mold plate has two sliding grooves formed at opposite ends thereof corresponding to each side of the accommodating cavity; the limiting pressing plate comprises a pressing plate main body and sliding block parts connected to two opposite ends of the pressing plate main body; the pressing plate main body is used for abutting against the top surface of the lower die core, and the sliding block part is correspondingly inserted into the sliding groove so as to realize the sliding connection of the limiting pressing plate and the lower die plate.

3. The interchangeable core injection mold of claim 1, further comprising an upper mold assembly for mating abutment with a top of the lower mold assembly; the upper die assembly comprises an upper die plate and an upper die core arranged on the bottom surface of the upper die plate; the upper die plate is used for abutting against the lower die plate, and the upper die core is used for abutting against the limiting pressure plate; gaps among the upper die core, the lower die core and the limiting pressure plate form an injection molding cavity; and an injection molding hole is formed in the middle of the upper template and communicated with the injection molding cavity.

4. The mold insert-replaceable injection mold of claim 3, wherein the mold insert-replaceable injection mold further comprises positioning press blocks mounted on opposite sides of the upper mold insert; the positioning pressing block is used for abutting against the connecting rod; the middle part of the positioning pressing block is provided with a recess, and the recess is used for accommodating the connecting rod.

5. The mold insert-replaceable injection mold according to claim 1, wherein the lower mold insert is provided with a cooling liquid channel therein, and one side of the limiting pressure plate away from the lower mold insert is connected with a cooling liquid inlet pipe and a cooling liquid outlet pipe; the cooling liquid inlet pipe is connected with one end of the cooling liquid channel, and the cooling liquid outlet pipe is connected with the other end of the cooling liquid channel.

6. The mold insert-replaceable injection mold according to claim 1, further comprising a mold release assembly installed at the bottom of the lower mold assembly; the demolding assembly comprises a bearing seat connected to the bottom of the lower template, a driving plate movably arranged between the bearing seat and the lower template, a plurality of ejector rods arranged on the driving plate at intervals, and a plurality of pressure springs arranged on two opposite sides of the top of the bearing seat; the pressure spring is clamped between the bearing seat and the lower template; the ejector rod is used for penetrating through the lower template and the lower die core and then protrudes and extends out of the top surface of the lower die core.