Plastic plate extrusion die with partitioned cooling chamber

Abstract

This utility model relates to the field of plastic sheet molding die manufacturing technology, and discloses a plastic sheet extrusion die with partitioned cooling chambers. It includes an installation head, a die head threadedly connected to the front of the installation head, a guide tube fixedly connected to the rear of the installation head, a die lip at the front of the die head, an adjusting screw threadedly connected to the top of the die head, a handwheel fixedly connected to the top of the adjusting screw, an extrusion block fixedly connected to the bottom of the adjusting screw, the extrusion block slidably connected inside the die lip, a slider fixedly connected to the rear of the die head, a sliding groove at the front of the installation head, the slider slidably connected inside the sliding groove, a guide hole at the rear of the installation head, and a cooling assembly installed at the front of the die head. In this utility model, the modified plastic sheet extrusion die allows for rapid positioning via the slider while simultaneously enabling free control of the sheet processing thickness using the extrusion block, and further utilizes the cooling assembly to achieve partitioned cooling of the finished product.

Description

Technical Field

[0001] This utility model relates to the field of plastic sheet molding die manufacturing technology, and in particular to a plastic sheet extrusion die with partitioned cooling chamber. Background Technology

[0002] In the plastic sheet extrusion molding process, the mold is the core equipment that determines product quality and production efficiency, and the cooling system is a key part of the mold design. Plastic sheet extrusion molds with partitioned cooling chambers are upgraded equipment developed to address the technical pain points of traditional cooling solutions.

[0003] The plastic sheet extrusion molds currently in use mainly consist of an installation head, a die head, a guide tube, and a feed inlet, and are applicable to various scenarios such as wide-width plastic sheet production, thin-walled plastic sheet production, and irregularly structured plastic sheet production.

[0004] While the plastic sheet extrusion dies currently in use effectively achieve processing accuracy for different sheet shapes, the varying cooling effects during processing result in irregular shaping of the finished plastic sheets. Furthermore, the positioning and matching of the die head and the positioning head are difficult. Therefore, a plastic sheet extrusion die with partitioned cooling chambers is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a plastic sheet extrusion mold with partitioned cooling chambers, which aims to improve the problems of difficult positioning of the die head and mounting head and difficulty in shaping caused by different cooling effects in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A plastic sheet extrusion mold with partitioned cooling chambers includes an installation head. A die head is threadedly connected to the front of the installation head, and a guide tube is fixedly connected to the rear of the installation head. A die lip is formed at the front of the die head. An adjusting screw is threadedly connected to the top of the die head. A handwheel is fixedly connected to the top of the adjusting screw. An extrusion block is fixedly connected to the bottom of the adjusting screw. The extrusion block is slidably connected inside the die lip. A slider is fixedly connected to the rear of the die head. A sliding groove is formed at the front of the installation head, and the slider is slidably connected inside the sliding groove. A guide hole is formed at the rear of the installation head, and a cooling assembly is installed at the front of the die head.

[0008] As a further description of the above technical solution:

[0009] The cooling assembly includes a cooling box, the rear of which abuts against the front of the mold head. The top of the cooling box has a first cooling chamber and a second cooling chamber. Both the first and second cooling chambers are threaded with a bidirectional lead screw. Limit blocks are threaded to both sides of the bidirectional lead screw. Positioning holes are provided on both the front and rear sides of the first and second cooling chambers.

[0010] As a further description of the above technical solution:

[0011] The outer side of the guide tube is fixedly connected to the body, and the bottom of the body is fixedly connected to the base.

[0012] As a further description of the above technical solution:

[0013] The bottom of the cooling box is fixedly connected to multiple lifting shafts, and each lifting shaft is fixedly connected to a base.

[0014] As a further description of the above technical solution:

[0015] Multiple nozzles are fixedly connected inside the cooling chamber, and a motor is installed on the right side of the cooling box.

[0016] As a further description of the above technical solution:

[0017] The bottom of the second cooling chamber is provided with an installation hole, and a rolling shaft is rotatably connected to the bottom of the second cooling chamber. The rolling shaft is rotatably connected inside the installation hole.

[0018] As a further description of the above technical solution:

[0019] The top of the machine body is fixedly connected to a feed inlet;

[0020] As a further description of the above technical solution:

[0021] The mold head is made of pre-hardened mold steel, and the cooling box is made of 304 stainless steel.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the limiting blocks connected by threads on both sides of the bidirectional lead screw are driven by the motor to move inward or outward simultaneously, thereby dividing the cooling box into different cooling chambers and using different cooling methods, thus achieving the effect of partitioned cooling molding of plastic.

[0024] 2. In this utility model, the cooperation between the slider and the sliding groove enables the mounting head and the mold head to achieve rapid positioning and engagement, thereby solving the problem of difficult mold installation and positioning in actual processing. Attached Figure Description

[0025] Figure 1This is a three-dimensional schematic diagram of the plastic sheet extrusion mold with partitioned cooling chamber proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the mounting head of the plastic sheet extrusion die with partitioned cooling chamber proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the cooling assembly of the plastic sheet extrusion die with partitioned cooling chambers proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the die head of the plastic sheet extrusion die with partitioned cooling chamber proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the cooling chamber two of the plastic sheet extrusion mold with partitioned cooling chambers proposed in this utility model.

[0030] Legend:

[0031] 1. Mounting head; 2. Die head; 3. Die lip; 4. Guide tube; 5. Sliding groove; 6. Slider; 7. Guide hole; 8. Extrusion block; 9. Adjusting screw; 10. Handwheel; 11. Cooling box; 12. Positioning hole; 13. Limiting block; 14. Base; 15. Cooling chamber one; 16. Cooling chamber two; 17. Two-way lead screw; 18. Motor; 19. Lifting shaft; 20. Mounting hole; 21. Rolling shaft; 22. Machine body; 23. Feed inlet; 24. Nozzle. Detailed Implementation

[0032] 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.

[0033] Reference Figures 1-5This utility model provides an embodiment of a plastic sheet extrusion mold with partitioned cooling chambers, including an installation head 1. A die head 2 is threadedly connected to the front of the installation head 1. The die head 2 can be disassembled and replaced at any time according to the needs of producing plastic sheets of different specifications. A guide pipe 4 is fixedly connected to the rear of the installation head 1. During the plastic sheet production process, external equipment transports molten plastic raw materials, and the guide pipe 4 precisely guides these molten plastics into the interior of the installation head 1, preparing them for subsequent molding in the die head 2 and preventing leakage or obstruction of molten plastic. A die lip 3 is provided at the front of the die head 2. When the molten plastic... When the material flows from the inside of the die head 2 to the die lip 3 under pressure, it will be restricted by the shape of the gap of the die lip 3, thus forming a plastic sheet prototype with thickness and width that meet the production requirements. The top of the die head 2 is threaded with an adjusting screw 9, the top of the adjusting screw 9 is fixedly connected with a handwheel 10, the bottom of the adjusting screw 9 is fixedly connected with an extrusion block 8, the extrusion block 8 is slidably connected inside the die lip 3, the rear of the die head 2 is fixedly connected with a slider 6, the front of the mounting head 1 is provided with a sliding groove 5, the slider 6 is slidably connected inside the sliding groove 5, the rear of the mounting head 1 is provided with a guide hole 7, and a cooling component is installed at the front of the die head 2.

[0034] Reference Figure 3 and Figure 5 The cooling assembly includes a cooling box 11, with the rear of the cooling box 11 abutting against the front of the die head 2. The cooling box 11 allows the high-temperature plastic sheet prototype that has just been extruded from the die lip 3 to directly enter the cooling area inside the cooling box 11, reducing the time the plastic sheet is exposed to the air and preventing it from deforming due to uneven temperature drop before cooling. The top of the cooling box 11 has a first cooling chamber 15 and a second cooling chamber 16. Both the first cooling chamber 15 and the second cooling chamber 16 are threaded with a bidirectional lead screw 17. When the bidirectional lead screw 17 rotates, it can drive the limiting blocks 13 connected to it on both sides to move towards the middle or separate to the sides. The left and right sides of the bidirectional lead screw 17 are threaded with limiting blocks 13. The front and rear sides of the first cooling chamber 15 and the second cooling chamber 16 are provided with positioning holes 12.

[0035] Reference Figure 2 and Figure 4The outer side of the guide pipe 4 is fixedly connected to the body 22. The bottom of the body 22 is fixedly connected to the base 14. The bottom of the cooling box 11 is fixedly connected to multiple lifting shafts 19. By adjusting the extension length of the lifting shafts 19, the cooling box 11 can be moved up and down to accurately match the extrusion height of the plastic sheet, ensuring that the freshly extruded plastic sheet can immediately enter the cooling area, avoiding untimely cooling or cooling position deviation. The bottom of each lifting shaft 19 is fixedly connected to the base 14. Multiple nozzles 24 are fixedly connected inside the first cooling chamber 15. A motor 18 is installed on the right side of the cooling box 11. The bottom of the second cooling chamber 16 has an installation hole 20. The bottom of the second cooling chamber 16 is rotatably connected to a rolling shaft 21. The rolling shaft 21 is used to assist the flow of the cooling medium inside the second cooling chamber 16. The rolling shaft 21 is rotatably connected inside the installation hole 20. The top of the body 22 is fixedly connected to the feed port 23. The die head 2 is made of pre-hardened mold steel, and the cooling box 11 is made of 304 stainless steel.

[0036] Working principle: First, the plastic mold of the required processing shape is quickly changed through the cooperation of the sliding groove 5 and the slider 6. At the same time, the handwheel 10 is turned to drive the adjusting screw 9 to move down, so that the extrusion block 8 is adjusted to the required plastic thickness. Finally, the lifting shaft 19 is adjusted so that the positioning hole 12 of the cooling box 11 is fully engaged with the outlet of the die lip 3. After the extruder is started, the processing material is input from the feed port 23 and input to the mounting head 1 for shaping through the guide pipe 4. Then, the die lip 3 outputs the final shaped plastic plate and selects the appropriate cooling chamber for cooling treatment according to the shape and thickness. The shaped plastic plate enters the appropriate size and thickness of the cooling chamber 15 and cooling chamber 26 from the positioning hole 12 according to its thickness. After entering the cooling chamber 15, the nozzle 24 inside the cooling chamber 15 continuously sprays coolant. When entering the cooling chamber 26, the internal rolling shaft 21 continuously rotates to keep the internal coolant in a flowing state.

[0037] 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. Plastic sheet extrusion die with partitioned cooling chamber, comprising a mounting head (1), characterized in that: The mounting head (1) is threadedly connected to the front of the die head (2), and the mounting head (1) is fixedly connected to the rear of the die head (4). The die head (2) has a die lip (3) at the front. The top of the die head (2) is threadedly connected to the top of the die head (2). The top of the adjusting screw (9) is fixedly connected to the handwheel (10). The bottom of the adjusting screw (9) is fixedly connected to the extrusion block (8). The extrusion block (8) is slidably connected inside the die lip (3). The rear of the die head (2) is fixedly connected to the slider (6). The mounting head (1) has a sliding groove (5) at the front. The slider (6) is slidably connected inside the sliding groove (5). The mounting head (1) has a flow guide hole (7) at the rear. The front of the die head (2) is equipped with a cooling component.

2. The plastic sheet extrusion die with zoned cooling cavity of claim 1, wherein: The cooling assembly includes a cooling box (11), the rear of which abuts against the front of the mold head (2). The top of the cooling box (11) has a first cooling chamber (15) and a second cooling chamber (16). Both the first cooling chamber (15) and the second cooling chamber (16) are threaded with a bidirectional lead screw (17). Both sides of the bidirectional lead screw (17) are threaded with limit blocks (13). Both the first cooling chamber (15) and the second cooling chamber (16) have positioning holes (12) on their front and rear sides.

3. The plastic sheet extrusion die with zoned cooling cavity of claim 1, wherein: The outer side of the guide pipe (4) is fixedly connected to the body (22), and the bottom of the body (22) is fixedly connected to the base (14).

4. The plastic sheet extrusion die with zoned cooling cavity of claim 2, wherein: The bottom of the cooling box (11) is fixedly connected to multiple lifting shafts (19), and the bottom of each lifting shaft (19) is fixedly connected to a base (14).

5. The plastic sheet extrusion die with zoned cooling cavity of claim 2, wherein: Multiple nozzles (24) are fixedly connected inside the cooling chamber (15), and a motor (18) is installed on the right side of the cooling box (11).

6. The plastic sheet extrusion die with zoned cooling cavity of claim 2, wherein: The bottom of the second cooling chamber (16) is provided with a mounting hole (20), and a rolling shaft (21) is rotatably connected to the bottom of the second cooling chamber (16). The rolling shaft (21) is rotatably connected inside the mounting hole (20).

7. The plastic sheet extrusion die with zoned cooling cavity of claim 3, wherein: The top of the machine body (22) is fixedly connected to the feed inlet (23).

8. The plastic sheet extrusion die with partitioned cooling chamber according to claim 2, characterized in that: The mold head (2) is made of pre-hardened mold steel, and the cooling box (11) is made of 304 stainless steel.

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