Multi-cavity automatic balance glue feeding mold

Abstract

The utility model relates to the technical field of injection molds, and discloses a multi-cavity automatic balance glue feeding mold, which comprises a lower mold, an upper mold and an assembling component, the assembling component is arranged at the top of the lower mold and is used for combining and assembling a top structural member of the lower mold, a plurality of positioning holes are formed in the upper mold, and the positioning holes are communicated with the upper mold. A top cover is arranged at the top of the upper mold, a glue inlet pipe is arranged in the upper mold, a lower mold ejection block is arranged at the bottom of the upper mold, a glue injection groove is formed in the lower mold ejection block, and a glue injection assembly is arranged in the lower mold ejection block. According to the utility model, by adopting a needle valve injection molding mode, under the control of the controller, the glue injection balance in each hole can be accurately controlled, trapped gas in the holes can be discharged through the movement of the valve needle, and the problem that the quality of a product is influenced due to the fact that the trapped gas cannot be discharged in the traditional needle point type glue injection is solved; and the quality and the stability of the product are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field especially relates to multi -hole automatic balance glue feeding mold. BACKGROUND

[0002] Multi -hole glue feeding mold is a kind of tool widely used in injection production. It is usually used for batch production of plastic products with complex shape. Multi -hole glue feeding mold has multiple glue injection holes, and multiple products can be injection molded at the same time, which greatly improves production efficiency. This kind of mold is generally composed of upper mold, lower mold and various auxiliary components. In the injection molding process, glue enters each glue injection hole through a specific channel, and after cooling and solidification, the required product shape is formed. For example, in the production field of electronic product shell, automobile parts, multi -hole glue feeding mold plays an important role.

[0003] In the prior art, multi -hole glue feeding mold usually adopts traditional needle point type glue feeding mode. In actual production scene, such as injection production line of electronic product shell, traditional needle point type glue feeding has some obvious problems. First, traditional needle point type glue feeding is difficult to accurately control the glue injection balance in each hole, which will lead to inconsistent product quality in different holes. Due to the inability to accurately control the glue injection amount and glue injection speed, it is easy to have the situation that some holes have too much glue injection and some holes have too little glue injection, which affects the dimensional accuracy and appearance quality of products. Secondly, traditional needle point type glue feeding cannot effectively discharge the trapped air in the hole. In the glue injection process, the glue liquid will seal the air in the glue injection hole, and if these trapped air cannot be discharged in time, it will form bubbles, cavities and other defects in the product, which seriously affects the quality and stability of the product, so the multi -hole automatic balance glue feeding mold is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0004] In order to make up for the above shortcomings, the utility model provides a multi -hole automatic balance glue feeding mold, which aims at improving the problems that the glue feeding mode in the prior art is difficult to control the glue injection balance in each hole and the trapped air is difficult to discharge.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a multi -hole automatic balance glue feeding mold, comprising a lower mold, an upper mold and an assembly component, the assembly component is arranged on the top of the lower mold, the assembly component is used for the top structure piece combination assembly of the lower mold, a plurality of positioning holes are arranged in the inside of the upper mold, a top cover is arranged on the top of the upper mold, a glue feeding pipe is arranged in the inside of the upper mold, a lower mold top block is arranged at the bottom of the upper mold, a glue injection groove is arranged in the inside of the lower mold top block, a glue injection assembly is arranged in the inside of the lower mold top block, and the glue injection assembly is used for glue injection operation;

[0006] The glue injection assembly includes a combination plate disposed inside the positioning hole. Multiple glue injection heads are disposed inside the combination plate, and multiple pistons are disposed at one end of each glue injection head. Two controllers are installed on the outside of the upper mold.

[0007] Furthermore, the top of the combined plate is fitted with the bottom of the upper mold, and the outer side of the piston is slidably connected to the inner side of the positioning hole.

[0008] Furthermore, the signal output terminal of the controller is electrically connected to the signal receiving terminals of multiple dispensing heads, and one end of the dispensing tube is connected to the internal through hole of the assembly plate.

[0009] Furthermore, the top of the lower mold is provided with three positioning plates, and each positioning plate has multiple through holes inside.

[0010] Furthermore, the positioning plate is provided with multiple sealing sleeves inside, which are engaged with the through holes inside the positioning plate.

[0011] Furthermore, the assembly component includes four mounting posts, one end of which is fixedly connected to the top of the lower mold.

[0012] Furthermore, mounting holes are provided at the four corners of the positioning plate, and the outer side of the mounting post fits into the inner side of the mounting hole.

[0013] Furthermore, four ejector pins are fixedly connected inside the lower mold, and the output end of the ejector pins contacts the bottom of the positioning hole.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, a needle valve injection molding method is adopted. In this method, the piston can move, thereby driving the valve needle inside the injection head to move. Under the control of the controller, the injection balance in each cavity can be precisely controlled. The movement of the valve needle can release the trapped air in the cavity. Compared with the traditional needle point injection method, this method has higher stability and solves the problem that the traditional needle point injection method will affect the quality of the product due to the inability to release trapped air, thus ensuring the quality and stability of the product.

[0016] 2. In this utility model, the top cover and positioning plate are placed on the top of the lower mold. Then, the mounting pin is passed through the corresponding mounting hole to secure the positioning plate. Next, the injection head is inserted into the hole of the assembly plate, ensuring a firm and accurate installation. Then, the assembly plate is installed at the bottom of the upper mold, and the piston and injection head are combined, ensuring a tight connection. Finally, the top cover is closed and the injection tube is inserted to complete the installation. This novel installation method is suitable for needle valve injection molding and lays the foundation for efficient mold operation. Attached Figure Description

[0017] Fig. 1 This is a perspective view of the multi-cavity automatic balancing glue injection mold proposed in this utility model;

[0018] Fig. 2 This is a schematic diagram of the glue inlet pipe structure of the multi-cavity automatic balancing glue inlet mold proposed in this utility model;

[0019] Fig. 3 This is a schematic diagram of the positioning plate structure of the multi-cavity automatic balancing glue injection mold proposed in this utility model.

[0020] Legend:

[0021] 1. Lower mold; 2. Upper mold; 3. Top cover; 4. Inlet tube; 5. Piston; 6. Assembly plate; 7. Injection head; 8. Positioning plate; 9. Sealing sleeve; 10. Controller; 11. Ejector pin; 12. Positioning hole; 13. Lower mold top block; 14. Injection groove; 15. Mounting hole; 16. Mounting column. 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] Reference Figs. 1-3This utility model provides an embodiment of a multi-cavity automatic balancing glue injection mold, including a lower mold 1, an upper mold 2, and an assembly component. The assembly component is located on the top of the lower mold 1 and is used for assembling the top structural components of the lower mold 1. The upper mold 2 has multiple positioning holes 12 inside, which provide positions for the subsequent installation of the glue injection component and other components. A top cover 3 is provided on the top of the upper mold 2, which protects and seals the upper mold 2. A glue injection pipe 4 is provided inside the upper mold 2 to introduce glue into the mold. A lower mold top block 13 is provided at the bottom of the upper mold 2, and a glue injection groove 14 is provided inside the lower mold top block 13. A glue injection component is provided inside the lower mold top block 13 for glue injection operation. The glue injection component includes a combination plate 6, which is located inside the positioning holes 12. The composite board 6 has multiple injection heads 7 inside, and multiple pistons 5 are set at one end of each injection head 7. Two controllers 10 are installed on the outside of the upper mold 2. The top of the composite board 6 is attached to the bottom of the upper mold 2. The outer side of the piston 5 is slidably connected to the inner side of the positioning hole 12. The signal output end of the controller 10 is electrically connected to the signal receiving end of the multiple injection heads 7. One end of the glue inlet tube 4 is connected to the internal through hole of the composite board 6. In actual operation, when glue injection is required, the controller 10 can control the injection head 7 to work, and the piston 5 can move, which can drive the valve needle inside the injection head 7 to move. Under the control of the controller 10, the glue injection balance in each cavity can be precisely controlled, and the movement of the valve needle can release the trapped air in the cavity. It is more stable than the traditional needle-point glue injection and solves the problem that trapped air will affect the product in the traditional glue injection.

[0024] Specifically, this solution adopts a needle valve injection molding method. In this method, the piston 5 can move, thereby driving the valve needle inside the injection head 7 to move. Under the control of the controller 10, the injection balance in each cavity can be controlled very precisely. Moreover, the movement of the valve needle can release trapped air in the cavity. Compared with the traditional needle point injection method, this method is more stable. The traditional needle point injection method may affect the quality of the product because trapped air cannot be released. This solution solves this problem well and ensures the quality and stability of the product.

[0025] Reference Figs. 1-3The lower mold 1 has three positioning plates 8 on its top. Each positioning plate 8 has multiple through holes for installing sealing sleeves 9. The sealing sleeves 9 engage with the through holes inside the positioning plates 8 to provide a seal. The assembly includes four mounting posts 16, one end of which is fixedly connected to the top of the lower mold 1. Mounting holes 15 are provided at the four corners inside the positioning plates 8. The outer side of the mounting post 16 fits against the inner side of the mounting hole 15. Four ejector pins 11 are fixedly connected inside the lower mold 1. The output end of the ejector pin 11 is connected to the positioning hole. The bottoms of 12 are in contact. When the entire mold needs to be assembled, the top cover 3 and the positioning plate 8 can be placed on the top of the lower mold 1. Then, the four mounting pillars 16 are passed through the corresponding mounting holes 15 respectively. This allows the three positioning plates 8 to be securely installed on the top of the lower mold 1. Then, multiple injection heads 7 are inserted into the internal holes of the combination plate 6 for installation. Then, the combination plate 6 is installed at the bottom of the upper mold 2, and the piston 5 is combined with the injection head 7. Finally, the top cover 3 is placed on the top of the upper mold 2 and the injection tube 4 is inserted to complete the installation. This new installation method is used to adapt to the new needle valve injection molding method.

[0026] Specifically, when assembling the entire mold, first carefully place the top cover 3 and positioning plate 8 on top of the lower mold 1. Then, accurately pass the four mounting pins 16 through the corresponding mounting holes 15. This operation ensures that the three positioning plates 8 are securely installed on top of the lower mold 1, preventing them from easily moving during subsequent use. Next, insert multiple injection heads 7 into the internal holes of the combination plate 6 for installation. This process requires ensuring the injection heads 7 are installed firmly and accurately. Afterward, install the combination plate 6 at the bottom of the upper mold 2 and combine the piston 5 with the injection heads 7, ensuring a tight connection between the components. Finally, place the top cover 3 on top of the upper mold 2 and insert the injection tube 4. This completes the installation of the entire mold. This new installation method is specifically designed to adapt to the new needle valve injection molding method, providing a good foundation for the efficient operation of the mold.

[0027] Working principle: When the entire mold needs to be assembled, the three positioning plates 8 of the top cover can be placed on the top of the lower mold 1, and then the four mounting pillars 16 are passed through the corresponding mounting holes 15 respectively, which can stabilize the three positioning plates 8 on the top of the lower mold 1. Then, multiple injection heads 7 are inserted into the internal holes of the combination plate 6 for installation. Then, the combination plate 6 is installed on the bottom of the upper mold 2, and the piston 5 is combined with the injection head 7. Finally, the top cover 3 is placed on the top of the upper mold 2 and the injection tube 4 is inserted to complete the installation. This new installation method is used to adapt to the new needle valve injection molding method.

[0028] In addition, this solution adopts a needle valve injection method. The piston 5 can move and drive the valve needle inside the injection head 7 to move. Under the control of the controller 10, the injection balance in each cavity can be precisely controlled. Moreover, the movement of the valve needle can release trapped air in the cavity. It is more stable than the traditional needle point injection method and solves the problem that trapped air will affect the product in the traditional injection method.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-cavity automatic balancing glue-feeding mold, comprising a lower mold (1), an upper mold (2), and an assembly assembly, characterized in that: The assembly component is located on the top of the lower mold (1). The assembly component is used for the assembly of the top structural components of the lower mold (1). The upper mold (2) has multiple positioning holes (12) inside. The top of the upper mold (2) is provided with a top cover (3). The upper mold (2) has a glue inlet pipe (4) inside. The bottom of the upper mold (2) is provided with a lower mold top block (13). The lower mold top block (13) has a glue injection groove (14) inside. The lower mold top block (13) has a glue injection component inside. The glue injection component is used for glue injection operation. The glue injection assembly includes a combination plate (6), which is disposed inside the positioning hole (12). Multiple glue injection heads (7) are disposed inside the combination plate (6), and multiple pistons (5) are disposed at one end of each glue injection head (7). Two controllers (10) are installed on the outside of the upper mold (2).

2. The multi-cavity automatic balancing injection mold according to claim 1, characterized in that: The top of the combined plate (6) is attached to the bottom of the upper mold (2), and the outer side of the piston (5) is slidably connected to the inner side of the positioning hole (12).

3. The multi-cavity automatic balancing injection mold according to claim 2, characterized in that: The signal output terminal of the controller (10) is electrically connected to the signal receiving terminal of the multiple dispensing heads (7), and one end of the dispensing tube (4) is connected to the internal through hole of the combination plate (6).

4. The multi-cavity automatic balancing injection mold according to claim 1, characterized in that: The top of the lower mold (1) is provided with three positioning plates (8), and each positioning plate (8) has multiple through holes.

5. The multi-cavity automatic balancing injection mold according to claim 4, characterized in that: The positioning plate (8) is provided with a plurality of sealing sleeves (9), which are engaged with the through holes inside the positioning plate (8).

6. The multi-cavity automatic balancing injection mold according to claim 5, characterized in that: The assembly includes four mounting posts (16), one end of which is fixedly connected to the top of the lower mold (1).

7. The multi-cavity automatic balancing injection mold according to claim 6, characterized in that: Mounting holes (15) are provided at the four corners of the positioning plate (8), and the outer side of the mounting post (16) fits against the inner side of the mounting hole (15).

8. The multi-cavity automatic balancing injection mold according to claim 1, characterized in that: The lower mold (1) is internally fixedly connected with four ejector pins (11), and the output end of the ejector pins (11) is in contact with the bottom of the positioning hole (12).

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