An electrically heated injection moulding module

By combining positioning pins, L-shaped brackets, and threaded columns, the difficulties and high costs of maintenance of electrically heated injection molds are solved, enabling rapid installation and disassembly of the mold, simplifying the maintenance process, reducing maintenance costs, and improving production efficiency and mold stability.

CN224360579UActive Publication Date: 2026-06-16SHENZHEN TOPSUN DOUBLE COLOR MOULD CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN TOPSUN DOUBLE COLOR MOULD CO LTD
Filing Date
2025-06-13
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Electrically heated injection molds are difficult to maintain and have high manufacturing costs, which affects production efficiency and costs, especially in mass production.

Method used

An electrically heated injection molding module was designed. Through the combination structure of positioning pins, L-shaped brackets and threaded columns, the injection mold body can be quickly locked and unlocked, which is convenient for maintenance. The separate design of heat conduction plate and heating pipe reduces the mold manufacturing cost.

🎯Benefits of technology

It enables rapid installation and disassembly of molds, simplifies the maintenance process, reduces maintenance costs, and improves production efficiency and mold stability.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224360579U_ABST
    Figure CN224360579U_ABST
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Abstract

The utility model relates to a forming module technical field, especially an electric heating type injection moulding forming module, including the mounting base, the top surface fixed connection of mounting base has a plurality of symmetrical setting's positioning pin. The utility model's advantage lies in: twist screw thread post makes it rotate relative to L type support, can drive the lifting plate to lift through screw thread drive, until after locking pin inserts into locking hole inside, can lock injection mould main part on mounting base, when needing to replace injection mould main part, only need to reverse screw thread post drive locking pin movement locking hole to pull out L type support and make its top motion out of groove, can quickly release the locking of injection mould main part to replace suitable injection mould main part, and heating pipe will be exposed after the injection mould main part is disassembled, so as to overhaul it.
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Description

Technical Field

[0001] This utility model relates to the field of molding module technology, and in particular to an electrically heated injection molding module. Background Technology

[0002] Injection molding is a crucial molding technology in the plastics processing industry. It involves injecting molten plastic into a mold cavity, where it cools and solidifies to obtain the desired plastic product. During injection molding, mold temperature control plays a vital role in product quality. Electrically heated injection molds are designed to meet this need. They use electric heating elements to heat the mold, ensuring it maintains a suitable temperature during injection molding, thus producing high-quality injection molded products. The definition of an electrically heated injection mold is that it uses electricity as a heat source, transferring heat to the mold through heating elements such as electric heating tubes, bringing the mold cavity surface to the required temperature range.

[0003] Electrically heated injection molds also have some drawbacks. First, the heating element is located inside the mold, making mold maintenance relatively difficult. If the heating element malfunctions, the mold must be disassembled for repair, increasing maintenance costs and impacting production efficiency. Second, each mold requires a heating element, increasing manufacturing costs. This is especially true for mass production, where mold manufacturing costs become a significant factor. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to propose an electrically heated injection molding module to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides an electrically heated injection molding module, including a mounting base. A plurality of symmetrically arranged locating pins are fixedly connected to the top surface of the mounting base. An injection mold body is slidably connected to the outer surface of the plurality of locating pins. The bottom surface of the injection mold body is in contact with the top surface of the mounting base. A heat-conducting plate is embedded in the bottom surface of the injection mold body. A plurality of linearly arranged slots are formed on the bottom surface of the heat-conducting plate. A plurality of linearly arranged heating tubes are fixedly connected to the top surface of the mounting base. The plurality of heating tubes are respectively inserted into a plurality of... Inside the slot, the top surface of the mounting base has two symmetrically arranged sliding grooves. The inner wall of each sliding groove is fixedly connected to two symmetrically arranged connecting rods. The outer surfaces of the two connecting rods are slidably connected to L-shaped brackets. Grooves are opened on both the left and right sides of the injection mold body. The tops of the two L-shaped brackets are respectively located inside the two grooves. The top of each L-shaped bracket is threadedly connected to a threaded post. The bottom end of the threaded post is rotatably connected to a lifting plate through a bearing. The bottom surface of the lifting plate is fixedly connected to two symmetrically arranged locking pins. Several locking pins are engaged with the injection mold body.

[0007] Preferably, in any of the above solutions, each groove has two symmetrically arranged locking holes on its inner wall, and several locking pins are engaged with the injection mold body through the locking holes.

[0008] Preferably, the bottom surface of the injection mold body has a plurality of symmetrically arranged positioning holes, and the positioning pin is slidably connected to the injection mold body through the positioning holes.

[0009] Preferably, in any of the above solutions, the top surface of the mounting base is fixedly connected to two symmetrically arranged clamping plates, and the bottom surface of the injection mold body has two symmetrically arranged clamping slots, and the clamping plates are engaged with the mounting base through the clamping slots.

[0010] Preferably, in any of the above solutions, the top surface of the lifting plate is fixedly connected to two symmetrically arranged guide rods, the threaded column is located between the two guide rods, and both guide rods are slidably connected to the L-shaped bracket.

[0011] Preferably, in any of the above embodiments, the L-shaped bracket has a through hole on its side, and the L-shaped bracket is slidably connected to the connecting rod through the through hole.

[0012] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0013] When injection molding is required, the operator can assemble the injection mold body onto the mounting base using locating pins. Then, push the L-shaped brackets closer to the injection mold body until the tops of the two L-shaped brackets are respectively inside the two grooves. At this point, twist the threaded column to rotate it relative to the L-shaped brackets. Through the threaded transmission, the lifting plate can be raised and lowered until the locking pin is inserted into the locking hole, locking the injection mold body onto the mounting base. At this time, the heating plate can heat the heat-conducting plate at the bottom of the injection mold body. When the injection mold body needs to be replaced, simply reverse the threaded column to move the locking pin into the locking hole and pull the L-shaped brackets outward so that the top moves out of the groove. This can quickly release the locking of the injection mold body and replace it with a suitable injection mold body. Moreover, after disassembling the injection mold body, the heating tube will be exposed for easy inspection and maintenance. Attached Figure Description

[0014] Figure 1 This is a first-view structural diagram of the assembly of this utility model;

[0015] Figure 2 This is a second-view structural diagram of the assembly of this utility model;

[0016] Figure 3 This is an exploded structural diagram of the assembly of this utility model;

[0017] Figure 4 This is a schematic diagram of the main structure of the injection mold of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the mounting base of this utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the L-shaped bracket of this utility model.

[0020] In the diagram: 1-Mounting base, 2-Positioning pin, 3-Injection mold body, 4-Heat conduction plate, 5-Slot, 6-Heating tube, 7-Slide groove, 8-Connecting rod, 9-L-shaped bracket, 10-Groove, 11-Threaded column, 12-Lifting plate, 13-Locking pin, 14-Locking hole, 15-Positioning hole, 16-Clamping plate, 17-Clamping groove, 18-Guide rod, 19-Through hole. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.

[0022] like Figures 1 to 6As shown, an electrically heated injection molding module includes a mounting base 1. A plurality of symmetrically arranged positioning pins 2 are fixedly connected to the top surface of the mounting base 1. An injection mold body 3 is slidably connected to the outer surface of the positioning pins 2. The bottom surface of the injection mold body 3 is in contact with the top surface of the mounting base 1. A heat-conducting plate 4 is embedded in the bottom surface of the injection mold body 3. A plurality of linearly arranged slots 5 are formed on the bottom surface of the heat-conducting plate 4. A plurality of linearly arranged heating tubes 6 are fixedly connected to the top surface of the mounting base 1. The heating tubes 6 are respectively inserted into the slots 5. Two symmetrically arranged slide grooves 7 are provided. The inner wall of each slide groove 7 is fixedly connected to two symmetrically arranged connecting rods 8. The outer surfaces of the two connecting rods 8 are slidably connected to L-shaped brackets 9. Grooves 10 are provided on both the left and right sides of the injection mold body 3. The tops of the two L-shaped brackets 9 are located inside the two grooves 10 respectively. The top of each L-shaped bracket 9 is threadedly connected to a threaded post 11. The bottom end of the threaded post 11 is rotatably connected to a lifting plate 12 through a bearing. The bottom surface of the lifting plate 12 is fixedly connected to two symmetrically arranged locking pins 13. Several locking pins 13 are engaged with the injection mold body 3.

[0023] As an optional technical solution of this utility model, two symmetrically arranged locking holes 14 are provided on the inner wall of each groove 10, and several locking pins 13 are engaged with the injection mold body 3 through the locking holes 14. The symmetrical arrangement of the locking holes 14 and locking pins 13 ensures that the injection mold body 3 can be firmly fixed in the groove 10, preventing the mold from loosening or shifting during operation. This design improves the stability and positioning accuracy of the mold, ensuring the quality of injection molding.

[0024] As an optional technical solution of this utility model, the bottom surface of the injection mold body 3 is provided with a plurality of symmetrically arranged positioning holes 15. The positioning pin 2 is slidably connected to the injection mold body 3 through the positioning holes 15. The cooperative design of the positioning holes 15 and the positioning pin 2 allows the injection mold body 3 to be quickly and accurately installed on the mounting base 1. The slidable connection of the positioning pin 2 through the positioning holes 15 simplifies the mold installation and disassembly process and improves operating efficiency.

[0025] As an optional technical solution of this utility model, the top surface of the mounting base 1 is fixedly connected with two symmetrically arranged clamping plates 16, and the bottom surface of the injection mold body 3 is provided with two symmetrically arranged clamping slots 17. The clamping plates 16 are engaged with the mounting base 1 through the clamping slots 17, which further enhances the connection stability between the injection mold body 3 and the mounting base 1. This symmetrically arranged clamping structure effectively prevents the mold from shaking during operation and ensures the stability of the injection molding process.

[0026] As an optional technical solution of this utility model, the top surface of the lifting plate 12 is fixedly connected with two symmetrically arranged guide rods 18, and the threaded column 11 is located between the two guide rods 18. Both guide rods 18 are slidably connected to the L-shaped bracket 9. The arrangement of the guide rods 18 makes the lifting plate 12 more stable during the lifting process, avoiding the tilting or instability that may occur when the threaded column 11 is subjected to force alone. The sliding connection between the guide rods 18 and the L-shaped bracket 9 improves the motion accuracy of the lifting plate 12 and ensures smooth opening and closing of the injection mold.

[0027] As an optional technical solution of this utility model, a through hole 19 is provided on the side of the L-shaped bracket 9. The L-shaped bracket 9 is slidably connected to the connecting rod 8 through the through hole 19. The design of the through hole 19 allows the connecting rod 8 to pass smoothly through the L-shaped bracket 9, ensuring that the connecting rod 8 will not get stuck or deviate during movement. This sliding connection structure improves the operational stability and reliability of the device, while simplifying the complexity of the mechanical structure.

[0028] An electrically heated injection molding module, the working principle of which is as follows:

[0029] 1): When injection molding is required, the operator can assemble the injection mold body 3 onto the mounting base 1 using the positioning pin 2, and then push the L-shaped bracket 9 close to the injection mold body 3 until the tops of the two L-shaped brackets 9 are respectively located inside the two grooves 10.

[0030] 2): At this time, twist the threaded column 11 to make it rotate relative to the L-shaped bracket 9. Through the threaded transmission, the lifting plate 12 can be lifted and lowered until the locking pin 13 is inserted into the locking hole 14. Then the injection mold body 3 can be locked on the mounting base 1. At this time, the heating plate 6 can heat the heat conduction plate 4 at the bottom of the injection mold body 3.

[0031] 3) When it is necessary to replace the injection mold body 3, simply reverse the threaded column 11 to drive the locking pin 13 to move the locking hole 14, and pull the L-shaped bracket 9 outward so that its top moves out of the groove 10. This can quickly release the lock on the injection mold body 3 and replace it with a suitable injection mold body 3. Moreover, after disassembling the injection mold body 3, the heating tube 6 will be exposed, making it easy to inspect and repair.

[0032] In summary, when injection molding is required, the operator can assemble the injection mold body 3 onto the mounting base 1 using the positioning pin 2. Then, push the L-shaped bracket 9 close to the injection mold body 3 until the tops of the two L-shaped brackets 9 are respectively inside the two grooves 10. At this time, twist the threaded column 11 to rotate it relative to the L-shaped bracket 9. Through the threaded transmission, the lifting plate 12 can be raised and lowered until the locking pin 13 is inserted into the locking hole 14, which can lock the injection mold body 3 onto the mounting base 1. At this time, the heating plate 6 can heat the heat-conducting plate 4 at the bottom of the injection mold body 3. When the injection mold body 3 needs to be replaced, simply reverse the threaded column 11 to move the locking pin 13 into the locking hole 14, and pull the L-shaped bracket 9 outward so that its top moves out of the groove 10. This can quickly release the lock on the injection mold body 3 and replace it with a suitable injection mold body 3. Moreover, after the injection mold body 3 is disassembled, the heating tube 6 will be exposed for easy maintenance.

Claims

1. An electrically heated injection molding module, characterized in that: The system includes a mounting base (1), on the top surface of which are fixedly connected several symmetrically arranged positioning pins (2). A molding die body (3) is slidably connected to the outer surface of the positioning pins (2). The bottom surface of the molding die body (3) is in contact with the top surface of the mounting base (1). A heat-conducting plate (4) is embedded in the bottom surface of the molding die body (3). The bottom surface of the heat-conducting plate (4) has several linearly arranged slots (5). A number of linearly arranged heating tubes (6) are fixedly connected to the top surface of the mounting base (1). The heating tubes (6) are respectively inserted into the slots (5). The top surface of the mounting base (1) has two symmetrically arranged... The slide groove (7) has two symmetrically arranged connecting rods (8) fixedly connected to the inner wall of each slide groove (7). The outer surfaces of the two connecting rods (8) are slidably connected to L-shaped brackets (9). The left and right sides of the injection mold body (3) are provided with grooves (10). The tops of the two L-shaped brackets (9) are respectively located inside the two grooves (10). The top of each L-shaped bracket (9) is threadedly connected to a threaded post (11). The bottom end of the threaded post (11) is rotatably connected to a lifting plate (12) through a bearing. The bottom surface of the lifting plate (12) is fixedly connected to two symmetrically arranged locking pins (13). Several locking pins (13) are engaged with the injection mold body (3).

2. The electrically heated injection molding module according to claim 1, characterized in that: Each groove (10) has two symmetrically arranged locking holes (14) on its inner wall, and several locking pins (13) are engaged with the injection mold body (3) through the locking holes (14).

3. The electrically heated injection molding module according to claim 2, characterized in that: The bottom surface of the injection mold body (3) is provided with a number of symmetrically arranged positioning holes (15), and the positioning pin (2) is slidably connected to the injection mold body (3) through the positioning holes (15).

4. The electrically heated injection molding module according to claim 3, characterized in that: The top surface of the mounting base (1) is fixedly connected with two symmetrically arranged clamping plates (16), and the bottom surface of the injection mold body (3) is provided with two symmetrically arranged slots (17). The clamping plates (16) are engaged with the mounting base (1) through the slots (17).

5. The electrically heated injection molding module according to claim 4, characterized in that: The top surface of the lifting plate (12) is fixedly connected to two symmetrically arranged guide rods (18), and the threaded column (11) is located between the two guide rods (18). Both guide rods (18) are slidably connected to the L-shaped bracket (9).

6. The electrically heated injection molding module according to claim 5, characterized in that: The L-shaped bracket (9) has a through hole (19) on its side, and the L-shaped bracket (9) is slidably connected to the connecting rod (8) through the through hole (19).