Glue injection device for injection mold processing

Abstract

The utility model discloses a glue injection device for injection mold processing, which comprises an injection seat, a nozzle is arranged on the outer wall of the injection seat and is communicated with the inside of the injection seat, a heat conducting plate is sleeved on the outer wall of the nozzle, a heat exchange cavity is arranged in the heat conducting plate and is respectively communicated with the heat conducting cavity and the inside of the heat exchange cavity, one-way valves are arranged in two groups of connecting pipes, and the one-way valves are communicated with the two groups of connecting pipes. A piston is connected into the device cylinder in a sliding mode, and a driving assembly for driving the piston to slide is installed in the device cylinder. Circulating heat exchange of the heat conduction oil is achieved through sliding of the piston, meanwhile, the heat conduction oil in the heat conduction cavity absorbs heat of the outer wall of the nozzle, the temperature of the nozzle is reduced, the situation that the viscosity of glue liquid is reduced and the glue liquid drips due to the fact that the temperature is too high is avoided, the heat conduction oil in the heat conduction cavity can heat the glue liquid in the collecting box, the glue liquid is prevented from being solidified, and the service life of the glue liquid is prolonged. And meanwhile, the stability and the product quality in the glue injection process are improved, regular shutdown for cleaning is not needed, and the production continuity is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of glue injection device technology, and in particular to a glue injection device for injection mold processing. Background Technology

[0002] When using injection molds to produce plastic products, molten plastic liquid is injected into the mold through an injection molding machine, and then the liquid cools and solidifies to form the product.

[0003] In existing technologies, adhesive is mainly injected into the mold through nozzles. However, in some applications, such as when the adhesive temperature is too high, its viscosity decreases and its fluidity increases, leading to dripping. Additionally, if the injection pressure is set too high, the adhesive will still have some pressure after injection, pushing it out. During the injection interval, the adhesive dripping from the nozzle may cause production interruptions, requiring periodic shutdowns for cleaning. Therefore, a new adhesive injection device for injection mold processing is needed to address these issues. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a glue injection device for injection mold processing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A glue injection device for injection mold processing includes an injection seat, a nozzle mounted on the outer wall of the injection seat and communicating with the interior of the injection seat, a heat-conducting plate sleeved on the outer wall of the nozzle and having a heat exchange cavity inside the heat-conducting plate, a collection box fixedly connected to the side wall of the injection seat, the upper end of the collection box being open and located directly below the nozzle, a stirring roller rotatably connected inside the collection box, a device cylinder fixedly connected to the outer wall of the collection box and having a heat-conducting cavity inside the collection box, two sets of connecting pipes fixedly connected to the outer wall of the device cylinder and communicating with the heat-conducting cavity and the heat exchange cavity respectively, a one-way valve installed in each of the two sets of connecting pipes, a piston slidably connected inside the device cylinder, and a drive assembly for driving the piston to slide inside the device cylinder.

[0007] Preferably, the drive assembly includes a lead screw sleeve slidably connected inside the device cylinder, a connecting rod is fixedly connected to the outer wall of the lead screw sleeve, and the end of the connecting rod is fixedly connected to the piston, and both outer walls of the lead screw sleeve are in close contact with the inner wall of the device cylinder.

[0008] Preferably, a reciprocating lead screw is rotatably connected to the inner wall of the device cylinder, and the lead screw is threadedly connected to the threaded section of the reciprocating lead screw.

[0009] Preferably, a limiting block is fixedly connected to the end of the reciprocating lead screw, and the radius of the limiting block is larger than the radius of the reciprocating lead screw.

[0010] Preferably, a drain pipe is installed at the lower end of the collection box and communicates with the inside of the collection box, and the reciprocating screw is coaxially and fixedly connected to the stirring roller.

[0011] Preferably, a servo motor is fixedly connected to the side wall of the collection box and is coaxially fixedly connected to the stirring roller.

[0012] This utility model has the following beneficial effects:

[0013] 1. This utility model achieves heat exchange through piston sliding, allowing the heat transfer oil to circulate. Simultaneously, the heat transfer oil in the heat chamber absorbs heat from the outer wall of the nozzle, reducing the nozzle temperature and preventing the adhesive from dripping due to reduced viscosity caused by excessive temperature. The heat transfer oil in the heat transfer chamber can also heat the adhesive in the collection box, preventing it from solidifying. This improves the stability of the adhesive injection process and product quality, eliminating the need for periodic shutdowns for cleaning and ensuring continuous production.

[0014] 2. This utility model achieves automatic collection and cleaning of dripping adhesive through the coordinated work of the collection box and the stirring roller. The stirring roller, driven by the servo motor, stirs the collected adhesive to prevent it from solidifying or accumulating, ensuring its fluidity and facilitating discharge through the drain pipe. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an injection device for injection mold processing proposed in this utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the collection box and heat-conducting plate.

[0017] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at the central device cylinder.

[0018] In the diagram: 1. Injection seat; 2. Nozzle; 3. Heat-conducting plate; 4. Collection box; 5. Servo motor; 6. Device cylinder; 7. Connecting pipe; 8. Stirring roller; 9. Heat-conducting cavity; 10. Heat exchange cavity; 11. Reciprocating screw; 12. Limiting block; 13. Screw sleeve; 14. Piston; 15. Connecting rod; 16. Drain pipe. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-3A glue injection device for injection mold processing includes an injection seat 1, a nozzle 2 installed on the outer wall of the injection seat 1 and communicating with the interior of the injection seat 1, a heat-conducting plate 3 sleeved on the outer wall of the nozzle 2 and a heat exchange chamber 10 opened in the heat-conducting plate 3, a collection box 4 fixedly connected to the side wall of the injection seat 1, the upper end of the collection box 4 being open and located directly below the nozzle 2, a stirring roller 8 rotatably connected inside the collection box 4, a device cylinder 6 fixedly connected to the outer wall of the collection box 4, a heat-conducting chamber 9 opened in the collection box 4, two sets of connecting pipes 7 fixedly connected to the outer wall of the device cylinder 6 and communicating with the heat-conducting chamber 9 and the heat exchange chamber 10 respectively, a one-way valve installed in each of the two sets of connecting pipes 7, a piston 14 slidably connected inside the device cylinder 6, and a drive assembly for driving the piston 14 to slide inside the device cylinder 6;

[0021] Specifically, both the heat-conducting cavity 9 and the heat exchange cavity 10 are filled with heat-conducting oil. The collection box 4 can collect the dripped adhesive liquid, and the stirring roller 8 can agitate the collected adhesive liquid. The heat-conducting oil in the heat exchange cavity 10 can absorb the heat from the outer wall of the nozzle 2, reducing the temperature of the nozzle 2. With the sliding of the piston 14, the heated heat-conducting oil is transported to the heat-conducting cavity 9 to heat the adhesive liquid in the collection box 4 and prevent it from solidifying.

[0022] The drive assembly includes a lead screw sleeve 13 slidably connected inside the device cylinder 6. A connecting rod 15 is fixedly connected to the outer wall of the lead screw sleeve 13, and the end of the connecting rod 15 is fixedly connected to the piston 14. Both outer walls of the lead screw sleeve 13 are in close contact with the inner wall of the device cylinder 6. A reciprocating lead screw 11 is rotatably connected to the inner wall of the device cylinder 6. The lead screw sleeve 13 is threadedly connected to the threaded section of the reciprocating lead screw 11. A limit block 12 is fixedly connected to the end of the reciprocating lead screw 11. The radius of the limit block 12 is larger than the radius of the reciprocating lead screw 11. A drain pipe 16 is installed at the lower end of the collection box 4 and communicates with the inside of the collection box 4. The reciprocating lead screw 11 is coaxially fixedly connected to the stirring roller 8. A servo motor 5 is fixedly connected to the side wall of the collection box 4 and is coaxially fixedly connected to the stirring roller 8.

[0023] Specifically, by means of the rotation of the reciprocating screw 11, the piston 14 can be synchronously driven to slide back and forth in the device cylinder 6. In this way, the heated heat transfer oil in the heat exchange chamber 10 can be continuously circulated and exchanged with the heat transfer oil in the heat transfer chamber 9, so as to achieve efficient heat transfer and uniform distribution. At the same time, the one-way valves installed in the two sets of connecting pipes 7 can effectively prevent the backflow of heat transfer oil.

[0024] In this invention, when the device is used, the operator first starts the servo motor 5 when using the injection molding die processing device. The servo motor 5 drives the reciprocating screw 11 and the stirring roller 8 to rotate synchronously. At this time, the rotation of the reciprocating screw 11 drives the screw sleeve 13 to slide inside the device cylinder 6. The screw sleeve 13 drives the piston 14 to reciprocate inside the device cylinder 6 through the connecting rod 15.

[0025] Driven by piston 14, heat transfer oil flows from heat exchange chamber 10 into heat transfer chamber 9 through connecting pipe 7. Simultaneously, a one-way valve in another set of connecting pipes 7 prevents backflow of the heat transfer oil, ensuring unidirectional circulation. The heat transfer oil in heat exchange chamber 10 absorbs heat from the outer wall of nozzle 2, reducing the temperature of nozzle 2 and preventing the adhesive from dripping due to viscosity reduction caused by excessive temperature. At the same time, the heated heat transfer oil is transported to heat transfer chamber 9 to heat the adhesive in collection box 4, preventing the adhesive from solidifying.

[0026] During the glue injection process, nozzle 2 injects the glue into the mold, and some glue may drip from nozzle 2. The dripping glue falls into collection box 4, and stirring roller 8, driven by servo motor 5, stirs the glue to prevent it from solidifying or accumulating, ensuring its fluidity. The stirred glue can be discharged through drain pipe 16 for easy subsequent cleaning or recycling.

[0027] In summary, this device achieves precise temperature control of the nozzle 2 and collection of dripping adhesive by circulating heat exchange oil, stirring of the stirring roller 8, and reciprocating motion of the piston 14. This effectively solves the problem of adhesive dripping caused by excessive temperature, while improving production efficiency and equipment stability.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A glue injection device for injection mold processing, comprising an injection seat (1), characterized in that, The injection seat (1) is equipped with a nozzle (2) on its outer wall and communicates with the inside of the injection seat (1). The nozzle (2) is fitted with a heat-conducting plate (3) on its outer wall and has a heat exchange chamber (10) inside the heat-conducting plate (3). The injection seat (1) is fixedly connected to a collection box (4) on its side wall. The upper end of the collection box (4) is open and located directly below the nozzle (2). The collection box (4) is rotatably connected to a stirring roller (8). The collection box (4) is fixedly connected to a device cylinder (6) on its outer wall. The collection box (4) has a heat-conducting chamber (9) inside it. The device cylinder (6) is fixedly connected to two sets of connecting pipes (7) on its outer wall and communicates with the heat-conducting chamber (9) and the heat exchange chamber (10) respectively. Both sets of connecting pipes (7) are equipped with one-way valves. The device cylinder (6) is slidably connected to a piston (14). The device cylinder (6) is equipped with a drive assembly for driving the piston (14) to slide.

2. The injection device for injection mold processing according to claim 1, characterized in that, The drive assembly includes a lead screw sleeve (13) slidably connected inside the device cylinder (6). A connecting rod (15) is fixedly connected to the outer wall of the lead screw sleeve (13), and the end of the connecting rod (15) is fixedly connected to the piston (14). Both outer walls of the lead screw sleeve (13) are in close contact with the inner wall of the device cylinder (6).

3. The injection device for injection mold processing according to claim 2, characterized in that, The inner wall of the device cylinder (6) is rotatably connected to a reciprocating lead screw (11), and the lead screw sleeve (13) is threadedly connected to the threaded section of the reciprocating lead screw (11).

4. The injection device for injection mold processing according to claim 3, characterized in that, The end of the reciprocating screw (11) is fixedly connected to a limiting block (12), and the radius of the limiting block (12) is larger than that of the reciprocating screw (11).

5. The injection device for injection mold processing according to claim 4, characterized in that, The lower end of the collection box (4) is equipped with a drain pipe (16) and is connected to the inside of the collection box (4). The reciprocating screw (11) is coaxially and fixedly connected to the stirring roller (8).

6. The injection device for injection mold processing according to claim 5, characterized in that, The collection box (4) is fixedly connected to a servo motor (5) on its side wall and is coaxially fixedly connected to the stirring roller (8).

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