Injection mold

Abstract

According to the injection mold, an upper mold sequentially comprises an upper mold bottom plate, an upper mold plate and an upper mold core installed in the upper mold plate from top to bottom, a glue injection opening is formed in the upper mold bottom plate, a glue injection head is installed on the upper mold plate and matched with the glue injection opening in position, the upper mold core comprises an upper mold fixing plate, and an upper mold cavity is formed in the upper mold plate and used for installing the upper mold fixing plate; the left and right ends of the upper mold fixing plate are respectively provided with four groups of upper molding parts for product injection molding; the lower die sequentially comprises a lower die bottom plate, an ejector pin assembly, a lower die plate and a lower die core installed in the lower die plate from bottom to top, and the lower die core and the upper die core are the same in layout structure. According to the injection mold provided by the utility model, the replaceable mold core structure is adopted, so that only part of parts need to be replaced after the mold core is abraded, the maintenance cost of the mold is reduced, the standby mold core is prepared, and when the main mold core needs to be maintained, the standby mold core can be rapidly replaced at any time, and the maintenance time cost of the mold is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an injection mold. Background Art

[0002] An injection mold is a tool for producing plastic products and also a tool that gives plastic products a complete structure and precise dimensions. When processing products, the mold core mostly adopts an integral structure, that is, one mold can only produce and process one product, and the entire mold needs to be replaced after the injection cavity is worn. This greatly limits the scope of use of the injection mold and is not convenient and flexible to use. Utility Model Content

[0003] The purpose of the utility model is to provide an injection mold to solve the technical problems in the background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0005] An injection mold comprises an upper mold and a lower mold, wherein the upper mold comprises an upper mold base plate, an upper mold plate and an upper mold core installed in the upper mold plate from top to bottom, a glue injection port is provided on the upper mold base plate, a glue injection head is installed on the upper mold plate to match the position of the glue injection port, the upper mold core comprises an upper mold fixing plate, an upper mold cavity is provided in the upper mold plate for installing the upper mold fixing plate, four groups of upper molding parts are respectively provided at the left and right ends of the upper mold fixing plate for product injection molding, a gate is provided at the center of the upper mold fixing plate to communicate with the glue injection port, a first main runner is provided along the front and rear directions of the gate, and a gate is provided at the first main runner. The left and right sides of the channel are respectively provided with two groups of first auxiliary runners, and two second auxiliary runners are respectively provided on a single first auxiliary runner, and a single second auxiliary runner is connected to the upper molding part. The upper molding part is composed of the first injection molding part, the second injection molding part, the third injection molding part and the fourth injection molding part in sequence from the direction close to the injection port. The first injection molding part and the third injection molding part are detachable structures, and the first injection molding part and the third injection molding part are embedded in the upper mold fixing plate; the lower mold is composed of the lower mold base plate, the ejector assembly, the lower mold plate and the lower mold core installed in the lower mold plate from bottom to top, and the lower mold core has the same layout structure as the upper mold core.

[0006] The ejector assembly includes an ejector base plate, an ejector panel and several ejectors. The ejector base plate is below the ejector panel. One end of the ejector is installed on the ejector panel, and the other end is inserted into the lower mold core. Several guide rods are also installed on the ejector panel. The guide rods are inserted into the lower mold plate. Compression springs are sleeved on the guide rods. The compression springs are squeezed between the lower mold plate and the ejector panel. Two spacer blocks are installed between the lower mold plate and the lower mold base plate. The two spacer blocks are respectively on the left and right sides of the ejector base plate.

[0007] The ejector panel is provided with a limit block in a direction close to the lower template.

[0008] An upper heat insulation plate is installed above the upper mold bottom plate, and a lower heat insulation plate is installed below the lower mold bottom plate.

[0009] Compared with the prior art, the injection mold provided by the utility model adopts a replaceable mold core structure, so that only some parts need to be replaced after the mold core is worn, the mold maintenance cost is reduced, and spare mold cores are prepared. When the main mold core needs to be repaired, the spare mold core can be quickly replaced at any time, saving the time cost of mold maintenance, and different mold cores can be replaced according to the product model. The mold of this application adopts injection molding of multiple sets of mold cores, which improves the efficiency of injection molding and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 : Schematic diagram of the three-dimensional structure of this application;

[0011] Figure 2 : A top view of the present application;

[0012] Figure 3 : Figure 2 AA cross-sectional view;

[0013] Figure 4 : Main view of upper mold core;

[0014] Figure 5 : Cross-sectional view of the mounting structure of the first injection molding part, the third injection molding part and the upper mold fixing plate;

[0015] Figure 6 : Main view of lower mold core. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0017] Specific embodiment 1: Please refer to Figures 1 to 6, an injection mold of this embodiment includes an upper mold and a lower mold. The upper mold is composed of an upper heat insulation board 1, an upper mold bottom plate 2, an upper mold plate 3 and an upper mold core 4 installed in the upper mold plate 3 from top to bottom. The upper mold bottom plate 2 is provided with a glue injection port 201. The upper mold plate 3 is provided with a glue injection head 5 that matches the position of the glue injection port 201. The upper mold core 4 includes an upper mold fixing plate 406. The upper mold plate 3 is provided with an upper mold cavity for installing the upper mold fixing plate 406. The left and right ends of the upper mold fixing plate 406 are divided into Four sets of upper molding parts 405 are provided for product injection molding. A gate 401 is provided at the center of the upper mold fixing plate 406 and is communicated with the injection port 201. A first main runner 402 is provided along the front and rear directions of the gate 401. Two sets of first auxiliary runners 403 are provided on the left and right sides of the first main runner 402. Two second auxiliary runners 404 are provided on each of the single first auxiliary runners 403. The single second auxiliary runner 404 is connected to the upper molding part 405. 405 is the first injection molding part 405-1, the second injection molding part 405-2, the third injection molding part 405-3 and the fourth injection molding part 405-4 from the direction close to the injection port 201. The first injection molding part 405-1 and the third injection molding part 405-3 are detachable structures. The first injection molding part 405-1 and the third injection molding part 405-3 are embedded in the upper mold fixing plate 406; the lower mold is the lower heat insulation plate 6, the lower mold bottom plate 7, the ejector assembly 9, the lower mold The plate 10 and the lower mold core 11 installed within the lower mold plate 10 have the same layout and structure as the upper mold core 4. The lower mold core 11 includes the lower mold plate 10, which is equipped with a second main runner 1101, a third auxiliary runner 1102, and a fourth auxiliary runner 1103, which correspond to the first main runner 402, the second auxiliary runner 404, and the third auxiliary runner 1102, respectively. The replaceable core structure within the lower mold core 11 corresponds to the position of the upper mold core 4. Side locks 12 are also installed on the PL surfaces of the upper and lower molds to improve mold positioning, enhance positioning accuracy, and reduce PL surface deviation.

[0018] The ejector assembly 9 includes an ejector base plate 901, an ejector panel 902 and several ejectors 903. The ejector base plate 901 is below the ejector panel 902. One end of the ejector 903 is mounted on the ejector panel 902, and the other end is inserted into the lower mold core 11. Several guide rods 904 are also installed on the ejector panel 902. The guide rods 904 are inserted into the lower mold plate 10. A compression spring 905 is sleeved on the guide rod 904. The compression spring 905 is squeezed between the lower mold plate 10 and the ejector panel 902. Two spacer blocks 8 are installed between the lower mold plate 10 and the lower mold base plate 7. The two spacer blocks 8 are respectively on the left and right sides of the ejector base plate 901 and are fixed to the lower mold base plate 7 and the lower mold plate 10. A limit block 906 is provided on the ejector panel 902 close to the lower mold plate 10.

[0019] Compared with the prior art, the injection mold provided by the utility model adopts a replaceable mold core structure, so that only some parts need to be replaced after the mold core is worn, the mold maintenance cost is reduced, and spare mold cores are prepared. When the main mold core needs to be repaired, the spare mold core can be quickly replaced at any time, saving the time cost of mold maintenance, and different mold cores can be replaced according to the product model. The mold of this application adopts injection molding of multiple sets of mold cores, which improves the efficiency of injection molding and production efficiency.

[0020] It will be apparent to those skilled in the art that the present invention is not limited to the details of the foregoing exemplary embodiments and that the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0021] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An injection mold, comprising an upper mold and a lower mold, characterized in that: The upper mold is composed of an upper mold base plate, an upper mold plate and an upper mold core installed in the upper mold plate from top to bottom. A glue injection port is provided on the upper mold base plate, and a glue injection head is installed on the upper mold plate to match the position of the glue injection port. The upper mold core includes an upper mold fixing plate, an upper mold cavity is provided in the upper mold plate for installing the upper mold fixing plate, and four groups of upper molding parts are respectively provided on the left and right ends of the upper mold fixing plate for product injection molding. A gate is provided at the center of the upper mold fixing plate to communicate with the glue injection port, and a first main runner is provided along the front and rear directions of the gate. There are two groups of first auxiliary runners, and two second auxiliary runners are respectively provided on a single first auxiliary runner, and a single second auxiliary runner is connected to the upper molding part. The upper molding part is composed of the first injection molding part, the second injection molding part, the third injection molding part and the fourth injection molding part in sequence from the direction close to the injection port. The first injection molding part and the third injection molding part are detachable structures, and the first injection molding part and the third injection molding part are embedded in the upper mold fixing plate; the lower mold is composed of the lower mold base plate, the ejector assembly, the lower mold plate and the lower mold core installed in the lower mold plate from bottom to top, and the lower mold core has the same layout structure as the upper mold core.

2. The injection mold according to claim 1, characterized in that: The ejector assembly includes an ejector base plate, an ejector panel and several ejectors. The ejector base plate is below the ejector panel. One end of the ejector is installed on the ejector panel, and the other end is inserted into the lower mold core. Several guide rods are also installed on the ejector panel. The guide rods are inserted into the lower mold plate. Compression springs are sleeved on the guide rods. The compression springs are squeezed between the lower mold plate and the ejector panel. Two spacer blocks are installed between the lower mold plate and the lower mold base plate. The two spacer blocks are respectively on the left and right sides of the ejector base plate.

3. The injection mold according to claim 2, characterized in that: The ejector panel is provided with a limit block in a direction close to the lower template.

4. The injection mold according to claim 3, characterized in that: An upper heat insulation plate is installed above the upper mold bottom plate, and a lower heat insulation plate is installed below the lower mold bottom plate.

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