A die structure for a polyolefin extrusion molding machine

Abstract

The utility model provides a die head structure for polyolefin extrusion molding machine belongs to the plastic processing technical field, this die head structure for polyolefin extrusion molding machine includes, extruder main part, connecting block, connecting block fixed surface of extruder main part is connected, device main part, device main part sliding surface of connecting block is connected, dismounting subassembly, dismounting subassembly is equipped with multiple sets, multiple sets of dismounting subassembly all include handle, rotary rod, clamping block, backplate, spring, clamping shell, placing groove and connecting hole, clamping block and clamping shell all are equipped with two, connecting hole is set up in the surface of device main part, rotary rod is rotatably connected in the inner wall of connecting hole, handle fixed connection in one end of rotary rod, this design is combined through mechanical locking and guiding calibration, realizes die head quick replacement and accurate positioning, significantly reduces downtime and promotes production efficiency, adapts to the demand of multi-specification product switching.

Description

Technical Field

[0001] This utility model belongs to the field of plastic processing technology, specifically relating to a die head structure for a polyolefin extrusion molding machine. Background Technology

[0002] The die structure in a polyolefin extrusion molding machine is a key component that ensures uniform distribution of the polymer melt and the formation of the desired cross-sectional shape. Through a carefully designed flow channel system, it guides the molten plastic from the extruder to a specifically shaped die, thereby producing continuous and high-quality products such as pipes, sheets, or films. Traditional die designs typically focus on achieving efficient material flow and uniform pressure distribution to guarantee the dimensional accuracy and surface quality of the final product.

[0003] However, traditional die head structures present significant inconveniences in terms of replacement and maintenance. Due to their typically integrated design, changing to different die sizes or performing internal cleaning requires disassembling the entire die head assembly, which is not only time-consuming and labor-intensive but also leads to prolonged production line downtime. Each time product specifications are changed, the newly installed die head needs to be recalibrated and adjusted, increasing operational complexity and labor costs. Utility Model Content

[0004] The purpose of this invention is to provide a die head structure for a polyolefin extrusion molding machine, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A die head structure for a polyolefin extrusion molding machine, comprising: Extruder body; The connecting block is fixedly connected to the surface of the extruder body; The main body of the device is slidably connected to the surface of the connecting block; The disassembly assembly comprises multiple sets, each set including a handle, a rotating rod, a locking block, a stop plate, a spring, a locking shell, a placement groove, and a connecting hole. Two locking blocks and two locking shells are provided. The connecting hole is located on the surface of the main body of the device. The rotating rod is rotatably connected to the inner wall of the connecting hole. The handle is fixedly connected to one end of the rotating rod. Both locking blocks are fixedly connected to the circumferential surface of the rotating rod. The placement groove is located on the surface of the connecting block. The spring is fixedly connected to the inner wall of the placement groove. The stop plate is fixedly connected to one end of the spring. Both locking shells are fixedly connected to the inner wall of the placement groove. The two locking blocks are slidably connected to the inner walls of the two locking shells respectively.

[0006] As a preferred embodiment of this utility model, an anti-slip sleeve is fixedly connected to the surface of the handle.

[0007] As a preferred embodiment of this utility model, the surface of the connecting block is provided with an alignment groove, and a calibration ring is fixedly connected to the surface of the main body of the device, and the calibration ring is slidably connected to the inner wall of the alignment groove.

[0008] In a preferred embodiment of this utility model, a sealing groove is provided on the surface of the connecting block, and a sealing gasket is slidably connected to the inner wall of the sealing groove.

[0009] As a preferred embodiment of this utility model, the plurality of the rotating rods are arranged in a circumferential array on the surface of the device body.

[0010] As a preferred embodiment of this utility model, the body of the extruder is made of tool steel.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This solution achieves rapid installation and removal of the die head by disassembling components, solving the problem of time-consuming and labor-intensive die head replacement in traditional methods. The operator simply presses and rotates the handle to secure the main body of the device to the connecting block via a mechanical locking mechanism of the locking blocks and housings. Disassembly is similarly achieved by pressing and rotating the handle, eliminating the need to disassemble the entire die head assembly. This design significantly reduces downtime, decreases manual labor intensity, and substantially improves production efficiency. It is particularly suitable for continuous production needs in scenarios involving switching between multiple product specifications, thereby reducing equipment maintenance costs.

[0012] 2. In this design, the alignment ring and alignment groove are matched, and the sealing gasket and sealing groove are fitted together, optimizing the die installation accuracy and sealing performance. The alignment ring ensures that the main body of the device is aligned with the axis of the connecting block, avoiding flow channel blockage or product defects caused by misalignment. The sealing gasket fills the assembly gap through elastic compression, effectively preventing molten polyolefin from leaking from the connection, ensuring a clean production environment and extending the service life of the equipment. Meanwhile, the extruder body is made of tool steel, which combines high strength and high temperature resistance, ensuring structural stability and consistent extrusion quality during long-term operation, further improving the overall reliability and economy of the device. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a first-view perspective perspective view of the present invention; Figure 2 This is an exploded view of the present invention; Figure 3 This utility model Figure 2 Enlarged view of point A in the middle; Figure 4This is a partial exploded view of the present invention.

[0014] In the diagram: 1. Extruder body; 2. Connecting block; 3. Device body; 4. Handle; 5. Sealing groove; 6. Alignment groove; 7. Sealing gasket; 8. Calibration ring; 9. Rotating rod; 10. Clamping block; 11. Support plate; 12. Spring; 13. Clamping case; 14. Placement groove; 15. Connecting hole. Detailed Implementation

[0015] 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.

[0016] Example: Please refer to Figures 1-4 The present invention provides the following technical solution: A die head structure for a polyolefin extrusion molding machine, comprising: Extruder body 1; Connecting block 2 is fixedly connected to the surface of extruder body 1; The main body of the device 3 is slidably connected to the surface of the connecting block 2; The disassembly assembly consists of multiple sets, each including a handle 4, a rotating rod 9, a locking block 10, a stop plate 11, a spring 12, a locking shell 13, a placement groove 14, and a connecting hole 15. Two locking blocks 10 and two locking shells 13 are provided. The connecting hole 15 is located on the surface of the main body 3. The rotating rod 9 is rotatably connected to the inner wall of the connecting hole 15. The handle 4 is fixedly connected to one end of the rotating rod 9. Both locking blocks 10 are fixedly connected to the circumferential surface of the rotating rod 9. The placement groove 14 is located on the surface of the connecting block 2. The spring 12 is fixedly connected to the inner wall of the placement groove 14. The stop plate 11 is fixedly connected to one end of the spring 12. Both locking shells 13 are fixedly connected to the inner wall of the placement groove 14. The two locking blocks 10 are slidably connected to the inner walls of the two locking shells 13 respectively.

[0017] In a specific embodiment of this utility model, the device body 3 is first aligned with the connecting block 2, and the calibration ring 8 is inserted into the alignment groove 6 for positioning. Then, the handle 4 is pressed, causing the rotating rod 9 to drive the locking block 10 into the placement groove 14. At this time, the spring 12 is compressed, and the abutment plate 11 moves inward. The handle 4 is rotated until the locking block 10 and the locking shell 13 are completely aligned. After releasing the handle 4, the spring 12 pushes the abutment plate 11 to reset, and the locking block 10 is firmly locked into the locking shell 13, completing the fixation. If disassembly is required, simply press the handle 4 again and rotate it to release the locking block 10 and the locking shell 13, and remove the device body 3 from the connecting block 2. This achieves the purpose of quickly changing the mold head, significantly reducing downtime and improving production efficiency, and adapting to the needs of switching between multiple product specifications.

[0018] Please refer to the details. Figures 1-4 The surface of handle 4 is fixedly connected with an anti-slip sleeve.

[0019] In this embodiment: when pressing or rotating the handle 4, the anti-slip sleeve increases friction to prevent the hand from slipping, especially in high temperature and humid environments, ensuring that the operator can apply force stably and avoiding uneven force causing the locking block 10 to not engage properly or to fall off accidentally, thereby improving the safety and convenience of operation.

[0020] Please refer to the details. Figures 1-4 The surface of the connecting block 2 is provided with an alignment groove 6, and the surface of the main body 3 of the device is fixedly connected with a calibration ring 8, which is slidably connected to the inner wall of the alignment groove 6.

[0021] In this embodiment: when the device body 3 is brought close to the connecting block 2, the calibration ring 8 slides along the alignment groove 6 until it is fully embedded, ensuring that the axis of the device body 3 is aligned with that of the connecting block 2, thus avoiding installation difficulties caused by skewness or misalignment.

[0022] Please refer to the details. Figures 1-4 A sealing groove 5 is provided on the surface of the connecting block 2, and a sealing gasket 7 is slidably connected to the inner wall of the sealing groove 5.

[0023] In this embodiment: after the main body 3 of the device is installed to the connecting block 2, the sealing gasket 7 is pressed between the contact surfaces of the two to form a sealing layer, preventing the molten polyolefin from leaking from the connection. This design uses elastic material to compensate for the assembly gap, thereby enhancing the sealing performance.

[0024] Please refer to the details. Figures 1-4 Multiple rotating rods 9 are arranged in a circular array on the surface of the main body 3 of the device.

[0025] In this embodiment, multiple sets of rotating rods 9 are evenly distributed on the surface of the main body 3 of the device to ensure that the clamping block 10 is subjected to uniform force and to avoid wear or breakage of the clamping block 10 or the clamping shell 13 due to local stress concentration.

[0026] Please refer to the details. Figures 1-4 The body of the extruder 1 is made of tool steel.

[0027] In this embodiment, the tool steel can maintain high hardness and wear resistance under high temperature and high pressure environment, ensuring that the molten polyolefin is not easily adhered or corroded when flowing through the extruder body 1, and resisting deformation or cracking caused by long-term use.

[0028] It should be noted that the specific model of extruder body 1 and device body 3 used shall be selected by those skilled in the art, and the above-mentioned extruder body 1 and device body 3 are all existing technologies, which will not be elaborated in this solution.

[0029] The working principle and usage process of this utility model are as follows: Align the main body 3 of the device with the connecting block 2, and slide the calibration ring 8 into the alignment groove 6 to complete the initial positioning. Then, press the handle 4 to make the rotating rod 9 drive the locking block 10 to slide into the placement groove 14. Rotate the handle 4 until the locking block 10 is aligned with the locking shell 13 and locked by the spring 12 and the abutment plate 11 to complete the fixation. If disassembly is required, press and rotate the handle 4 again to release the lock and remove the main body 3 of the device from the connecting block 2. At the same time, the sealing gasket 7 is embedded in the sealing groove 5 to form a sealing layer to prevent leakage of molten material, while the extruder body 1 made of tool steel ensures structural strength and durability. This design combines mechanical locking and guiding calibration to achieve rapid die head replacement and precise positioning, significantly reducing downtime and improving production efficiency, and adapting to the needs of switching between multiple specifications of products.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A die head structure for a polyolefin extrusion molding machine, characterized in that: include: Extruder body (1); Connecting block (2), which is fixedly connected to the surface of the extruder body (1); The main body of the device (3) is slidably connected to the surface of the connecting block (2); The disassembly assembly comprises multiple sets, each set including a handle (4), a rotating rod (9), a locking block (10), a stop plate (11), a spring (12), a locking shell (13), a placement groove (14), and a connecting hole (15). Two locking blocks (10) and two locking shells (13) are provided. The connecting hole (15) is located on the surface of the main body (3). The rotating rod (9) is rotatably connected to the inner wall of the connecting hole (15). The handle (4) is fixedly connected to... At one end of the rotating rod (9), the two locking blocks (10) are fixedly connected to the circumferential surface of the rotating rod (9), the placement groove (14) is opened on the surface of the connecting block (2), the spring (12) is fixedly connected to the inner wall of the placement groove (14), the abutment (11) is fixedly connected to one end of the spring (12), the two locking shells (13) are fixedly connected to the inner wall of the placement groove (14), and the two locking blocks (10) are slidably connected to the inner walls of the two locking shells (13).

2. The die head structure for a polyolefin extrusion molding machine according to claim 1, characterized in that: The surface of the handle (4) is fixedly connected with an anti-slip sleeve.

3. The die head structure for a polyolefin extrusion molding machine according to claim 2, characterized in that: The surface of the connecting block (2) is provided with an alignment groove (6), and the surface of the main body (3) of the device is fixedly connected with a calibration ring (8), and the calibration ring (8) is slidably connected to the inner wall of the alignment groove (6).

4. The die head structure for a polyolefin extrusion molding machine according to claim 3, characterized in that: The surface of the connecting block (2) is provided with a sealing groove (5), and a sealing gasket (7) is slidably connected to the inner wall of the sealing groove (5).

5. The die head structure for a polyolefin extrusion molding machine according to claim 4, characterized in that: Multiple rotating rods (9) are arranged in a circumferential array on the surface of the device body (3).

6. The die head structure for a polyolefin extrusion molding machine according to claim 5, characterized in that: The body of the extruder (1) is made of tool steel.

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