Injection mold with hierarchical demolding

Abstract

This utility model discloses a multi-layered demolding injection mold, including a lower mold and an upper mold. The lower mold includes a lower module and several injection tubes. The bottom of the lower module is provided with an injection port. One end of each injection tube is disposed inside the lower module and communicates with the injection port. The upper mold includes a first module, a first mold core, a side mold core, a second module, and a second mold core. The first module is movably disposed on top of the lower module. The first mold core is disposed on the first module. Several injection tubes are disposed inside the first mold core. Each injection tube has an injection inlet at its top and an injection port at its bottom. The other end of each injection tube is movably connected to and inserted into the injection tubes through the injection port. The side mold core is disposed on the first module and is located outside the first mold core. The second module is movably pressed onto the top of the first module. The second mold core is disposed at the bottom of the second module and together with the first mold core and the side mold core, forms a mold cavity. The mold cavity communicates with the injection inlet.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, specifically relating to a multi-layered demolding injection mold. Background Technology

[0002] Injection molds are tools used to produce plastic products, and they also give plastic products a complete structure and precise dimensions. Injection molding is a processing method used to mass-produce certain complex-shaped parts. Specifically, it refers to injecting heated and molten plastic into the mold cavity under high pressure by an injection molding machine, and then obtaining the molded product after cooling and solidification.

[0003] For some products that require simultaneous injection molding at multiple injection points, this will increase the number of connection points between the product and the injection gate. If the injection gate is directly separated from the product when the mold is opened, the product as a whole is easily subjected to large uneven forces from the residual material in the injection gate, which may cause the product to bend or twist due to demolding. Utility Model Content

[0004] This invention provides a multi-layered demolding injection mold to solve the above-mentioned technical problems.

[0005] The solution adopted by this utility model to achieve its technical effect is as follows:

[0006] A multi-layered injection mold includes a lower mold and an upper mold. The lower mold includes a lower module and several injection tubes. An injection port is located at the bottom of the lower module. One end of each injection tube is disposed within the lower module and communicates with the injection port. The upper mold includes a first module, a first mold core, a side mold core, a second module, and a second mold core. The first module is movably disposed on top of the lower module. The first mold core is disposed on the first module. Several injection tubes are disposed within the first mold core. Each injection tube has an injection inlet at its top and an injection port at its bottom. The other end of each injection tube is movably connected and inserted into the injection tube through the corresponding injection port. The side mold core is disposed on the first module and is located outside the first mold core. The second module is movably pressed onto the top of the first module. The second mold core is disposed at the bottom of the second module. The second mold core, the first mold core, and the side mold core together form a mold cavity. The mold cavity communicates with the injection inlet.

[0007] Preferably, it further includes a demolding mechanism; the demolding mechanism includes a demolding cylinder, a lifting plate, and a lifting rod; the demolding cylinder is disposed on both sides of the lower module; the lifting plate is movably disposed on the top of the lower module, and the lifting plate is disposed on the top of the drive end of the demolding cylinder; the lifting rod is disposed on the top of the lifting plate; the top of the lifting rod is disposed on the bottom of the first module.

[0008] Preferably, the demolding mechanism further includes a demolding rod; the demolding rod is disposed on the top of the lifting plate; the top surface of the demolding rod extends movably from the top surface of the first mold core, forming part of the bottom wall of the mold cavity.

[0009] Preferably, the demolding mechanism further includes a side demolding rod; the side mold core is slidably disposed on the first module; the side mold core is provided with a guide hole that slopes outward from top to bottom; the bottom of the second module is provided with an inclined guide rod; the inclined guide rod is slidably inserted into the guide hole.

[0010] Preferably, the first module is provided with a sliding groove; the side wall of the sliding groove is provided with a guide groove; guide blocks are provided on both sides of the side mold core; the guide blocks are slidably disposed in the guide groove.

[0011] Preferably, a positioning block is bolted to the first module; the guide groove is formed between the positioning block and the slide groove.

[0012] Preferably, the side mold core includes a first side mold core and a second side mold core; the length of the first side mold core is longer than the length of the second side mold core; a track block is provided on the slide groove; a track groove is provided at the bottom of both the first side mold core and the second side mold core; the track groove of the first side mold core is slidably sleeved on the outside of the track block, and the bottom surface of the first side mold core is in slidable contact with the top surface of the slide groove; the track groove of the second side mold core is slidably sleeved on the outside of the track block, and the bottom surface of the second side mold core is suspended above the top surface of the slide groove.

[0013] Preferably, the lower module has support platforms on both sides at the top; the support platforms have first positioning posts at the top; the first module has a first positioning sleeve inside the bottom; the first positioning sleeve is slidably fitted on the outside of the first positioning post, and the first positioning post slides through the first module; the first module has a second positioning post at the top; the second module has a second positioning sleeve and a positioning hole at the bottom; the second positioning sleeve is slidably fitted on the outside of the second positioning post; and the positioning hole is slidably fitted on the top outside of the first positioning post.

[0014] The beneficial effects of this utility model are as follows: the raw material enters the molding cavity through the injection port, injection tube, injection tube, and injection inlet for molding. The injection port and injection tube are located on the lower module, and the injection tube is located on the first module. During demolding, the lower module and the first module separate, firstly achieving material residue separation and demolding between the injection tube and the injection tube; then, the second module separates from the first module, achieving material residue separation and demolding between the molded product and the injection inlet. For products that require simultaneous injection molding at multiple injection points, the secondary batch separation of material residue in this application can effectively reduce the impact of different local tearing forces on the product during demolding, preventing damage to the product during the demolding process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall injection mold disclosed in the embodiment of this utility model;

[0016] Figure 2 This is a schematic diagram of the injection mold without the second module disclosed in an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the second mold core disclosed in an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the first module disclosed in an embodiment of the present utility model;

[0019] Figure 5 This is a schematic diagram of the top of the lower module disclosed in an embodiment of this utility model;

[0020] Figure 6 This is a schematic diagram of the interior of the lower module disclosed in an embodiment of this utility model;

[0021] Figure 7 This is a bottom view of the second module disclosed in an embodiment of the present utility model.

[0022] Labeling Explanation: 1-Lower Module, 2-Injection Pipe, 3-Injection Tube, 4-First Module, 5-First Mold Core, 6-Side Mold Core, 7-Second Module, 8-Second Mold Core, 9-Injection Tube, 10-Demolding Cylinder, 11-Lifting Plate, 12-Lifting Ejector Rod, 13-Demolding Rod, 14-Side Demolding Rod, 15-Slide Groove, 16-Guide Groove, 17-Guide Block, 18-Positioning Block, 19-Rail Block, 20-Rail Groove, 21-Support Platform, 22-First Positioning Post, 23-First Positioning Bushing, 24-Second Positioning Post, 25-Second Positioning Bushing, 26-Positioning Hole, 27-Base Plate, 28-Pressure Block. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or may have an intervening element present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or may have an intervening element present. When an element is referred to as being "fixedly connected to" another element, it can be a common fixing connection method such as welding, bolting, or gluing.

[0024] Please refer to Figure 1-7 This utility model discloses a multi-layered injection mold for demolding, including a lower mold and an upper mold; the lower mold includes a lower module 1 and a plurality of injection tubes 2; the bottom of the lower module 1 is provided with an injection port 3; one end of each of the plurality of injection tubes 2 is disposed in the lower module 1 and communicates with the injection port 3 respectively; the upper mold includes a first module 4, a first mold core 5, a side mold core 6, a second module 7, and a second mold core 8; the first module 4 is movably disposed on the top of the lower module 1; the first mold core 5 is disposed on the first module 4; a plurality of injection tubes 9 are disposed in the first mold core 5; the plurality of injection tubes 9 are disposed in the lower module 1; the lower module 1 is provided with an injection port 3; one end of each of the plurality of injection tubes 2 is disposed in the lower module 1 and communicates with the injection port 3 respectively; the upper mold includes a first module 4, a first mold core 5, a side mold core 6, a second module 7, and a second mold core 8; the first module 4 is movably disposed on the top of the lower module 1; the first mold core 5 is disposed on the first module 4; a plurality of injection tubes 9 are disposed in the first mold core 5; the lower module 4 is movably disposed on the bottom of the lower module 1 and has ... Each injection tube 9 has an injection inlet at its top and an injection port at its bottom. The other ends of the injection tubes 2 are movably connected and inserted into the injection tubes 9 through the injection ports. The side mold core 6 is disposed on the first module 1 and is located outside the first mold core 5. The second module 7 is movably pressed onto the top of the first module 4. The second mold core 8 is disposed at the bottom of the second module 7. The second mold core 8, the first mold core 5, and the side mold core 6 together form a mold cavity. The mold cavity is connected to the injection inlet.

[0025] Specifically, it also includes a demolding mechanism; the demolding mechanism includes a demolding cylinder 10, a lifting plate 11, and a lifting rod 12; the demolding cylinder 10 is disposed on both sides of the lower module 1; the lifting plate 11 is movably disposed on the top of the lower module 1, and the lifting plate 11 is disposed on the top of the drive end of the demolding cylinder 10; the lifting rod 12 is disposed on the top of the lifting plate 11; the top of the lifting rod 12 is disposed at the bottom of the first module 4.

[0026] Specifically, the demolding mechanism further includes a demolding rod 13; the demolding rod 13 is disposed on the top of the lifting plate 11; the top surface of the demolding rod 13 extends movably from the top surface of the first mold core 5, forming part of the bottom wall of the mold cavity.

[0027] Specifically, the demolding mechanism further includes a side demolding rod 14; the side mold core 6 is slidably disposed on the first module 4; the side mold core 6 is provided with a guide hole that slopes outward from top to bottom; the bottom of the second module 7 is provided with an inclined guide rod 15; the inclined guide rod 15 is slidably inserted into the guide hole.

[0028] Specifically, the first module 4 is provided with a sliding groove 15; the side wall of the sliding groove 15 is provided with a guide groove 16; the two sides of the side mold core 6 are provided with guide blocks 17; the guide blocks 17 are slidably disposed in the guide groove 16.

[0029] Specifically, a positioning block 18 is bolted to the first module 4; a guide groove 16 is formed between the positioning block 18 and the slide groove 15. The positioning block 18 can be disassembled and installed at any time for easy replacement in case of damage.

[0030] Specifically, the side mold core 6 includes a first side mold core and a second side mold core; the length of the first side mold core is longer than the length of the second side mold core; a track block 19 is provided on the slide groove; a track groove 20 is provided at the bottom of both the first and second side mold cores; the track groove 20 of the first side mold core is slidably sleeved on the outside of the track block 19, and the bottom surface of the first side mold core is in sliding contact with the top surface of the slide groove 15; the track groove 20 of the second side mold core is slidably sleeved on the outside of the track block 19, and the bottom surface of the second side mold core is suspended above the top surface of the slide groove 15. The first side mold core is used to form the longer side of the product, therefore, a certain frictional resistance is used to reduce the force on the product edge during demolding, ensuring better product forming quality.

[0031] Specifically, the lower module 1 has support platforms 21 on both sides at the top; the support platforms 21 have first positioning posts 22 on their tops; the first module 4 has a first positioning sleeve 23 at its bottom; the first positioning sleeve 23 is slidably fitted on the outside of the first positioning post 22, and the first positioning post 22 slides through the first module 4; the first module 4 has a second positioning post 24 on its top; the second module 7 has a second positioning sleeve 25 and a positioning hole 26 at its bottom; the second positioning sleeve 25 is slidably fitted on the outside of the second positioning post 24; the positioning hole 26 is slidably fitted on the top outside of the first positioning post 24. The first positioning post 22, the first positioning sleeve 23, the second positioning post 24, the second positioning sleeve 25, and the positioning hole 26 cooperate with each other to ensure that the lower module 4, the first module 4, and the second module 7 remain stable and do not shift during both mold opening and mold closing processes.

[0032] Specifically, the bottom of the lower module 1 is provided with a base plate 27, and the bottom of the second positioning post 24 passes through the lower module 1 and is located on the top of the base plate 27.

[0033] Specifically, a clamping block 28 is provided at the bottom of the second module 7, and the clamping block 28 is pressed against the top of the side mold core 6.

[0034] As can be seen from the above description, this utility model can effectively protect the product from damage during the demolding process.

[0035] The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. It should be noted that the protection scope of the present utility model includes, but is not limited to, the above embodiments; the specific structures disclosed in the accompanying drawings are only preferred embodiments of the present utility model. Those skilled in the art can develop other embodiments based on this. Any simple modifications or equivalent substitutions that do not depart from the innovative concept of the present utility model are all covered by the present utility model and fall within the protection scope of the present utility model.

Claims

1. A multi-stage demolding injection mold, characterized in that, include: The lower mold includes a lower module and several injection tubes; the bottom of the lower module is provided with an injection port; one end of each of the several injection tubes is disposed inside the lower module and is respectively connected to the injection port. The upper mold includes a first module, a first mold core, a side mold core, a second module, and a second mold core. The first module is movably disposed on top of the lower module. The first mold core is disposed on the first module. A plurality of injection tubes are disposed inside the first mold core. Each of the plurality of injection tubes has an injection inlet at its top and an injection port at its bottom. The other end of each of the plurality of injection tubes is movably connected and inserted into the plurality of injection tubes through the injection port. The side mold core is disposed on the first module and is located outside the first mold core. The second module is movably pressed onto the top of the first module. The second mold core is disposed at the bottom of the second module. The second mold core, the first mold core, and the side mold core together form a mold cavity. The mold cavity is connected to the injection inlet.

2. The injection mold for multi-layered demolding according to claim 1, characterized in that: It also includes a demolding mechanism; the demolding mechanism includes a demolding cylinder, a lifting plate, and a lifting rod; the demolding cylinder is disposed on both sides of the lower module; the lifting plate is movably disposed on the top of the lower module, and the lifting plate is disposed on the top of the drive end of the demolding cylinder; the lifting rod is disposed on the top of the lifting plate; the top of the lifting rod is disposed at the bottom of the first module.

3. The injection mold for multi-layered demolding according to claim 2, characterized in that: The demolding mechanism further includes a demolding rod; the demolding rod is disposed on the top of the lifting plate; the top surface of the demolding rod extends movably from the top surface of the first mold core, forming part of the bottom wall of the mold cavity.

4. The injection mold for multi-layered demolding according to claim 2, characterized in that: The demolding mechanism further includes a side demolding rod; the side mold core is slidably disposed on the first module; the side mold core is provided with a guide hole that slopes outward from top to bottom; the bottom of the second module is provided with an inclined guide rod; the inclined guide rod is slidably inserted into the guide hole.

5. The injection mold for multi-layered demolding according to claim 4, characterized in that: The first module is provided with a sliding groove; the side wall of the sliding groove is provided with a guide groove; guide blocks are provided on both sides of the side mold core; the guide blocks are slidably disposed in the guide groove.

6. The injection mold for multi-layered demolding according to claim 5, characterized in that: A positioning block is bolted to the first module; a guide groove is formed between the positioning block and the slide.

7. The injection mold for multi-layered demolding according to claim 5, characterized in that: The side mold core includes a first side mold core and a second side mold core; the length of the first side mold core is longer than the length of the second side mold core; a track block is provided on the slide groove; a track groove is provided at the bottom of both the first side mold core and the second side mold core; the track groove of the first side mold core is slidably sleeved on the outside of the track block, and the bottom surface of the first side mold core is in slidable contact with the top surface of the slide groove; the track groove of the second side mold core is slidably sleeved on the outside of the track block, and the bottom surface of the second side mold core is suspended above the top surface of the slide groove.

8. The injection mold for multi-layered demolding according to claim 1, characterized in that: The lower module has support platforms on both sides at the top; a first positioning post is provided on the top of the support platform; a first positioning bushing is provided inside the bottom of the first module; the first positioning bushing is slidably sleeved on the outside of the first positioning post, and the first positioning post slides through the first module; a second positioning post is provided on the top of the first module; a second positioning bushing and a positioning hole are provided on the bottom of the second module; the second positioning bushing is slidably sleeved on the outside of the second positioning post; the positioning hole is slidably sleeved on the top outside of the first positioning post.

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