Novel injection mold structure

By introducing control valves into the injection feed and venting channels of the mold, and utilizing bus connection terminals and wedge block structures, the problem of flow control during multi-cavity injection molding is solved, improving injection quality and reliability, and facilitating mold operation and maintenance.

CN224170354UActive Publication Date: 2026-04-28ZHONGSHAN HANXIN PRECISION MOLD CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHONGSHAN HANXIN PRECISION MOLD CO LTD
Filing Date
2025-05-28
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

Existing mold structures lack effective flow control during multi-cavity injection molding, affecting the effectiveness and reliability of injection molding and limiting their applicability.

Method used

The injection feed channel and venting channel are connected to the control valve in the mold structure, and connected to the control system through the bus connection terminal. Combined with the inclined insertion channel and wedge block, the lower mold body can be positioned and disassembled, which facilitates replacement and enhances the control accuracy and stability of the mold.

Benefits of technology

Precise control and venting management of the injection molding liquid are achieved through control valves and bus connection terminals, improving injection molding quality and reliability. The positioning and disassembly of the lower mold body are convenient and highly applicable.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224170354U_ABST
    Figure CN224170354U_ABST
Patent Text Reader

Abstract

The utility model discloses a novel injection mold structure which comprises a base, a supporting seat fixed on the base, a lower mold seat on the supporting seat and a lower mold body fixed in the lower mold seat, an upper mold seat is arranged above the lower mold body, an upper mold body is fixed on the bottom surface of the upper mold seat, and a plurality of mold cavities are formed between the lower mold body and the upper mold body. The injection mold is characterized in that the top surface of the upper mold base is provided with an injection molding feeding channel and a plurality of exhaust channels; a control valve is fixed in the upper mold base, the injection molding feeding channel and the exhaust channel are both connected with the control valve, a plurality of bus connecting terminals used for being connected with a control system are fixed to the side edge of the upper mold base, and the bus connecting terminals are connected with the control valve. The injection molding device is reasonable in structural arrangement, can be connected with an external control system through the bus connecting terminal, is convenient to control an injection molding feeding channel and an exhaust channel, is beneficial to control injection molding liquid to be injected into different mold cavities, can exhaust air at different positions, and is beneficial to improvement of injection molding quality and control precision.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, specifically relating to a novel injection mold structure. Background Technology

[0002] A mold is a common tool structure used for injection molding. Existing molds generally include a base, a support fixed on the base, and a lower mold base set on the support. A lower mold body is set on the lower mold base, and an upper mold base and an upper mold body are located above the lower mold body. A mold cavity is formed between the upper mold body and the lower mold body. During injection molding, the injection liquid enters from the upper mold body. Although this can meet the processing requirements of general situations, in actual applications, when there are multiple mold cavities at the same time, the conventional mold structure does not have a corresponding control and drainage structure, which will affect the effectiveness and reliability of injection molding to a certain extent and limit its applicability. Utility Model Content

[0003] The purpose of this invention is to provide a novel injection mold structure that has a reasonable structural design and improves injection molding reliability.

[0004] The technical solution to achieve the purpose of this utility model is a novel injection mold structure, including a base, a support seat fixed on the base, a lower mold seat on the support seat, a lower mold body fixed in the lower mold seat, an upper mold seat above the lower mold body, an upper mold body fixed on the bottom surface of the upper mold seat, multiple mold cavities formed between the lower mold body and the upper mold body, and an injection feeding channel and multiple venting channels provided on the top surface of the upper mold seat.

[0005] A control valve is fixed inside the upper mold base. The injection feeding channel and the exhaust channel are both connected to the control valve. Several bus connection terminals for connecting to the control system are fixed on the side of the upper mold base. The bus connection terminals are connected to the control valve.

[0006] A further preferred embodiment is that the side wall of the lower mold base is provided with several inclined insertion channels;

[0007] A translation slider is provided above the inclined insertion channel, and an insertion rod is provided inside the translation slider. The lower part of the insertion rod is located inside the inclined insertion channel, and a wedge block is fixed to the top of the insertion rod.

[0008] The wedge-shaped surface of the wedge block presses against the lower side of the lower mold body to position the lower mold body.

[0009] A further preferred embodiment is that the side thread of the support base has two lifting rings and a clamping cylinder;

[0010] The clamping cylinder is fixed on the center line of the two lifting rings, and the movable shaft of the clamping cylinder presses against one of the translation sliders.

[0011] A further preferred embodiment is that: a guide post is fixed on the lower mold base, and a guide hole is provided on the upper mold base that matches the position of the guide post;

[0012] The guide post is inserted into the guide hole for positioning.

[0013] A further preferred embodiment is that a cooling pipe is provided inside the lower mold base, and an input connector and an output connector connected to the cooling pipe are provided on the side wall of the lower mold base.

[0014] A further preferred embodiment is that the top surface of the upper mold base is provided with a wire-locking groove, and the connection line between the bus connection terminal and the control valve is positioned within the wire-locking groove.

[0015] This utility model has the following positive effects: The structure of this utility model is reasonably designed. A control valve is fixed inside the upper mold base. The injection inlet channel and the venting channel are both connected to the control valve. Several bus connection terminals for connecting to the control system are fixed on the side of the upper mold base. It can be connected to an external control system through the bus connection terminals, which facilitates the control of the injection inlet channel and the venting channel. This not only helps to control the injection of the molten plastic into different mold cavities, but also allows for venting at different positions, which helps to improve the quality of injection molding, improve control accuracy, and ensure stable and reliable use with strong applicability.

[0016] Furthermore, it has several inclined insertion channels on the side wall of the lower mold base; an insertion rod is installed in the inclined insertion channel, and a wedge block is fixed at the top of the insertion rod. The wedge block can quickly and effectively position the lower mold body, and also facilitate the disassembly of the lower mold body, making it convenient for replacement or maintenance operations. It is easy to operate and has strong applicability. Attached Figure Description

[0017] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the present invention when the top plate of the upper mold base is removed;

[0020] Figure 3 This is a schematic diagram of the specific structure of the insertion rod and wedge block in this utility model.

[0021] Reference numerals: 1. Base; 2. Support base; 3. Lower mold base; 4. Lower mold body; 5. Upper mold base; 6. Upper mold body; 7. Injection feed channel; 8. Exhaust channel; 9. Control valve; 10. Bus connection terminal; 11. Inclined insertion channel; 12. Translation slider; 13. Insertion rod body; 14. Wedge block; 15. Lifting ring; 16. Clamping cylinder body; 17. Guide post; 18. Guide hole; 19. Input connector; 20. Output connector; 21. Wire clamping groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example

[0024] See Figures 1 to 3 As shown, a novel injection mold structure includes a base 1, a support 2 fixed on the base, a lower mold base 3 on the support 2, a lower mold body 4 fixed inside the lower mold base, an upper mold base 5 above the lower mold body, an upper mold body 6 fixed to the bottom surface of the upper mold base, and multiple mold cavities formed between the lower mold body and the upper mold body. The top surface of the upper mold base is provided with an injection feeding channel 7 and multiple venting channels 8. In this embodiment, the above structures are all conventional structures of the prior art, simply applied, and therefore not described in detail. Furthermore, the multiple mold cavities can simultaneously complete the injection molding of multiple finished products. In this embodiment, the mold cavities are mainly used for processing plate-shaped structures, and therefore not described in detail.

[0025] In this embodiment, a control valve 9 is fixed inside the upper mold base. Both the injection molding feed channel and the venting channel are connected to the control valve. Several bus connection terminals 10 for connecting to the control system are fixed on the side of the upper mold base, and these bus connection terminals are connected to the control valve. In this embodiment, the bus connection terminals are used for pluggable electrical connection to the data bus of the control system to transmit control signals, thereby ensuring the effectiveness of the injection molding feed channel's feeding and venting. This allows for injection molding operations in different mold cavities and offers strong applicability.

[0026] In this embodiment, a plurality of inclined insertion channels 11 are provided on the side wall of the lower mold base; a translation slider 12 is provided above the inclined insertion channel, an insertion rod 13 is provided inside the translation slider, and the lower part of the insertion rod is located in the inclined insertion channel, and a wedge block 14 is fixed at the top of the insertion rod; during assembly, the wedge surface of the wedge block presses against the lower side of the lower mold body to position the lower mold body. In this embodiment, the lower side of the lower mold body is an inclined surface, and the wedge-shaped surface of the wedge block fits against the lower inclined surface of the lower mold body. This structure ensures the stability and effectiveness of the lower mold body's installation position. Furthermore, the use of a wedge block, with its inclined surface contacting the side of the lower mold body, increases the contact area, preventing displacement or deformation of the lower mold body and facilitating disassembly. In practical applications, to ensure the overall structural stability after installation, the support base has two lifting rings 15 and a clamping cylinder 16 threaded on its side. During installation, the clamping cylinder is fixed to the center line of the two lifting rings, and its movable shaft presses against one of the translation sliders. After all the insert rods and wedge blocks are installed and clamped, the clamping cylinder presses against one of the insert rods, making its position more stable and preventing loosening or movement.

[0027] In this embodiment, both the lower mold base and the upper mold base are square, with one or two insertion rods on each side. When the clamping cylinder clamps, the insertion rods on the other edges are limited in the inclined insertion channel, thereby generating resistance to cooperate with the clamping cylinder to ensure the clamping and positioning of the position.

[0028] In this embodiment, a guide post 17 is fixed on the lower mold base, and a guide hole 18 is provided on the upper mold base to match the position of the guide post; the guide post is inserted into the guide hole for positioning. This structure improves the positional stability between the upper and lower mold bases, preventing displacement or shaking, and thus improving the quality of injection molding.

[0029] Furthermore, in this embodiment, a cooling pipe is provided inside the lower mold base, and an input connector 19 and an output connector 20 connected to the cooling pipe are provided on the side wall of the lower mold base. This allows for connection to an external water pipe, which helps improve cooling efficiency.

[0030] Furthermore, in this embodiment, the top surface of the upper mold base is provided with a wire-locking groove 21, and the connection line between the bus connection terminal and the control valve is positioned within the wire-locking groove. This prevents damage to the line and also facilitates inspection and maintenance of the line.

[0031] This utility model has the following positive effects: The structure of this utility model is reasonably designed. A control valve is fixed inside the upper mold base. The injection inlet channel and the venting channel are both connected to the control valve. Several bus connection terminals for connecting to the control system are fixed on the side of the upper mold base. It can be connected to an external control system through the bus connection terminals, which facilitates the control of the injection inlet channel and the venting channel. This not only helps to control the injection of the molten plastic into different mold cavities, but also allows for venting at different positions, which helps to improve the quality of injection molding, improve control accuracy, and ensure stable and reliable use with strong applicability.

[0032] Furthermore, it has several inclined insertion channels on the side wall of the lower mold base; an insertion rod is installed in the inclined insertion channel, and a wedge block is fixed at the top of the insertion rod. The wedge block can quickly and effectively position the lower mold body, and also facilitate the disassembly of the lower mold body, making it convenient for replacement or maintenance operations. It is easy to operate and has strong applicability.

[0033] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural parts described in the instruction manual can also be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0034] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, these obvious variations or modifications derived from the essential spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A novel injection mold structure, comprising a base, a support fixed on the base, a lower mold base on the support base, a lower mold body fixed within the lower mold base, an upper mold base disposed above the lower mold body, an upper mold body fixed to the bottom surface of the upper mold base, and a plurality of mold cavities formed between the lower mold body and the upper mold body, characterized in that: The top surface of the upper mold base is provided with an injection feeding channel and multiple venting channels; A control valve is fixed inside the upper mold base. The injection feeding channel and the exhaust channel are both connected to the control valve. Several bus connection terminals for connecting to the control system are fixed on the side of the upper mold base. The bus connection terminals are connected to the control valve.

2. The novel injection mold structure according to claim 1, characterized in that: The lower mold base has several inclined insertion channels on its side wall; A translation slider is provided above the inclined insertion channel, and an insertion rod is provided inside the translation slider. The lower part of the insertion rod is located inside the inclined insertion channel, and a wedge block is fixed to the top of the insertion rod. The wedge-shaped surface of the wedge block presses against the lower side of the lower mold body to position the lower mold body.

3. The novel injection mold structure according to claim 2, characterized in that: The side thread of the support base has two lifting rings and a clamping cylinder; The clamping cylinder is fixed on the center line of the two lifting rings, and the movable shaft of the clamping cylinder presses against one of the translation sliders.

4. The novel injection mold structure according to claim 1, characterized in that: A guide post is fixed on the lower mold base, and a guide hole that matches the position of the guide post is provided on the upper mold base; The guide post is inserted into the guide hole for positioning.

5. The novel injection mold structure according to claim 1, characterized in that: The lower mold base is provided with a cooling pipe, and the side wall of the lower mold base is provided with an input connector and an output connector that are connected to the cooling pipe.

6. The novel injection mold structure according to claim 1, characterized in that: The top surface of the upper mold base is provided with a wire-locking groove, and the connection line between the bus connection terminal and the control valve is positioned within the wire-locking groove.