A polypropylene extrusion molding device

Abstract

This utility model discloses a polypropylene extrusion molding device, relating to the field of plastic molding technology. The polypropylene extrusion molding device includes a polypropylene extrusion unit with a feed inlet. A first motor is fixedly connected to one end of the polypropylene extrusion unit, and a support frame is fixedly connected to the bottom of the polypropylene extrusion unit. When it is necessary to change to a different specification mold, the current to the magnetic conductor coil is cut off, causing the magnetic conductor to lose its magnetism and the magnetic attraction between it and the permanent magnet inside the mold to dissipate. At this time, the old mold can be directly removed. After replacing it with a new specification mold, the new mold is placed against the sealing plate and aligned with the extrusion hole. The magnetic conductor coil is then energized, causing it to regain its magnetism and re-establish magnetic attraction with the permanent magnet inside the new mold. The entire process requires no additional mechanical fixing structure; mold replacement can be quickly completed simply by switching the current on and off, significantly improving the device's adaptability to different product specifications.

Description

Technical Field

[0001] This utility model relates to the field of plastic molding technology, and in particular to a polypropylene extrusion molding device. Background Technology

[0002] In the field of polypropylene extrusion molding, existing equipment relies on mechanical connection structures such as bolts and clips for mold fixing. These structures require manual disassembly or tightening of parts one by one during operation, which is not only time-consuming and labor-intensive, but also prone to insufficient mold fitting accuracy due to uneven installation force, resulting in leakage of molten material or deviation in product molding size.

[0003] Meanwhile, when it is necessary to produce products of different specifications, changing the mold requires multiple processes such as disassembling the old mold, calibrating the position of the new mold, and re-tightening. The whole process often requires downtime of more than 30 minutes, which seriously affects production efficiency. In addition, frequent mechanical disassembly and assembly will aggravate the wear and tear on the mold and fixed parts, shorten the service life of the equipment, and increase maintenance costs.

[0004] Furthermore, traditional fixing methods make it difficult to achieve rapid mold positioning, requiring additional tooling for calibration, which further prolongs the mold change cycle. In the existing technology, there is no structural design that can fix and replace the mold by magnetic attraction, which cannot meet the production requirements of high efficiency, precision, and low loss. Therefore, there is an urgent need for a polypropylene extrusion molding device that can quickly fix and replace the mold by magnetic attraction. Utility Model Content

[0005] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a polypropylene extrusion molding device that can solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a polypropylene extrusion device is provided, wherein a feed inlet is provided on the polypropylene extrusion device, a first motor is fixedly connected to one end of the polypropylene extrusion device, a support frame is fixedly connected to the bottom of the polypropylene extrusion device, a heating ring is provided on the polypropylene extrusion device, a product container is fixedly connected to the other end of the polypropylene extrusion device, and a threaded rod is rotatably connected inside the polypropylene extrusion device.

[0007] Cooling pipes are fixedly connected to both sides of the product container, and a water tank is fixedly connected to one end of the cooling pipes. A moving rod is fixedly connected to one side of the support frame, and a sealing plate is fixedly connected to one end of the moving rod.

[0008] The cooling pipe runs through the interior of the product container, the sealing plate is attached to the surface of the product container, and the heating ring is annular and set on the surface of the polypropylene extrusion device.

[0009] Preferably, the other end of the polypropylene extrusion device has an extrusion hole, a mold is fixedly connected to one side of the sealing plate, two fixing blocks are fixedly connected to the front of the sealing plate, a connecting rod is fixedly connected to one side of the fixing block, a magnetic conductor is fixedly connected to one end of the connecting rod, and a second motor is fixedly connected to the other side of the fixing block.

[0010] Preferably, the output end of the second motor is fixedly connected to the magnetic conductor, and a permanent magnet is provided inside the mold. The magnetism of the magnetic conductor comes from the current passing through the coil of the magnetic conductor, thereby generating magnetic attraction to achieve a fixed connection.

[0011] Preferably, the mold has a sliding rod inside, a spring is provided on the sliding rod, a fixed rod is fixedly connected to the other end of the support frame, and a storage box is slidably connected to the support frame.

[0012] Preferably, the sliding rod passes through the interior of the mold and the sealing plate, one end of the spring is fixedly connected to the sealing plate, and the other end of the spring is fixedly connected to the sliding rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] When this polypropylene extrusion molding device needs to change to a different specification mold, the current to the magnetic conductor coil is cut off, the magnetism of the magnetic conductor disappears, and the magnetic attraction between it and the permanent magnet inside the mold is released. At this time, the old mold can be directly removed. After replacing it with a new specification mold, the new mold is attached to the sealing plate and aligned with the extrusion hole. Current is then passed through the magnetic conductor coil to generate magnetism, which re-establishes magnetic attraction with the permanent magnet inside the new mold, achieving a tight fixation of the new mold. The entire process does not require additional mechanical fixing structures. Mold replacement can be quickly completed by switching the current on and off, greatly improving the device's adaptability to different product specifications.

[0015] In this polypropylene extrusion molding device, after the product has solidified, as the moving rod moves backward, one end of the sliding rod contacts and is blocked by the fixed rod at the other end of the support frame. Meanwhile, the molded product continues to move, causing the sliding rod to slide relative to the mold. At the same time, the spring is compressed. Under the elastic force of the spring, the sliding rod pushes the molded product out from one side of the mold. The demolded product falls into the storage box that is slidably connected to the support frame for easy collection later. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of a polypropylene extrusion molding device according to the present invention;

[0018] Figure 2 This is a cross-sectional view of a polypropylene extrusion molding apparatus according to the present invention.

[0019] Figure 3 This is a partial schematic diagram of a polypropylene extrusion molding device according to the present invention;

[0020] Figure 4 This is a partial cross-sectional view of a polypropylene extrusion molding device according to the present invention.

[0021] Reference numerals: 1. Polypropylene extrusion device; 2. Feed inlet; 3. First motor; 4. Support frame; 5. Heating ring; 6. Product container; 7. Sealing plate; 8. Moving rod; 9. Second motor; 10. Fixing block; 11. Magnetic conductor; 12. Connecting rod; 13. Cooling pipe; 14. Water tank; 15. Material storage box; 16. Threaded rod; 17. Spring; 18. Sliding rod; 19. Fixing rod; 20. Mold; 21. Extrusion orifice. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] Please see Figure 1-4This utility model provides a technical solution: a polypropylene extrusion molding device, including a polypropylene extrusion device 1, a feed port 2 on the polypropylene extrusion device 1, a first motor 3 fixedly connected to one end of the polypropylene extrusion device 1, a support frame 4 fixedly connected to the bottom of the polypropylene extrusion device 1, a heating ring 5 on the polypropylene extrusion device 1, a product container 6 fixedly connected to the other end of the polypropylene extrusion device 1, and a threaded rod 16 rotatably connected inside the polypropylene extrusion device 1.

[0027] Cooling pipes 13 are fixedly connected to both sides of the product container 6, and a water storage tank 14 is fixedly connected to one end of the cooling pipes 13. A moving rod 8 is fixedly connected to one side of the support frame 4, and a sealing plate 7 is fixedly connected to one end of the moving rod 8.

[0028] Cooling pipe 13 penetrates the interior of product container 6, sealing plate 7 is attached to the surface of product container 6, heating ring 5 is annular and set on the surface of polypropylene extrusion device 1, and heating ring 5 is distributed in an array.

[0029] When polypropylene needs to be extruded, polypropylene granules are put into the feed port 2, and then the first motor 3 is started. Its output power drives the threaded rod 16 inside the polypropylene extrusion device 1 to rotate, and drives the raw material polypropylene to be conveyed forward along the internal cavity of the polypropylene extrusion device 1.

[0030] Furthermore, the annular design of the heating ring 5 ensures that the polypropylene extrusion device 1 is heated evenly, ensuring that the raw material is fully melted. The coolant in the water storage tank 14 is transported to the cooling pipe 13. Since the cooling pipe 13 runs through the interior of the product container 6, when the coolant flows in the cooling pipe 13, it exchanges heat with the molten polypropylene material in the product container 6 through the pipe wall, absorbs the heat of the molten material, promotes its rapid cooling and solidification, and forms a product that matches the shape of the inner cavity of the product container 6.

[0031] Furthermore, the other end of the polypropylene extrusion device 1 is provided with an extrusion hole 21, a mold 20 is fixedly connected to one side of the sealing plate 7, two fixing blocks 10 are fixedly connected to the front of the sealing plate 7, a connecting rod 12 is fixedly connected to one side of the fixing block 10, a magnetic conductor 11 is fixedly connected to one end of the connecting rod 12, and a second motor 9 is fixedly connected to the other side of the fixing block 10.

[0032] The output end of the second motor 9 is fixedly connected to the magnetic conductor 11. The mold 20 is equipped with a permanent magnet. The magnetism of the magnetic conductor 11 comes from the current passing through the coil of the magnetic conductor 11, thereby generating magnetic attraction to achieve a fixed connection.

[0033] Furthermore, a sliding rod 18 is slidably connected inside the mold 20, and a spring 17 is provided on the sliding rod 18. A fixing rod 19 is fixedly connected to the other end of the support frame 4, and a storage box 15 is slidably connected to the support frame 4.

[0034] The sliding rod 18 passes through the interior of the mold 20 and the sealing plate 7. One end of the spring 17 is fixedly connected to the sealing plate 7, and the other end of the spring 17 is fixedly connected to the sliding rod 18.

[0035] When the second motor 9 starts, the magnetic conductor 11 generates magnetism after current is passed through its own coil, and generates magnetic attraction with the permanent magnet inside the mold 20, so that the mold 20 is tightly attached and fixed to the sealing plate 7 to prevent the leakage of molten material and provide a stable environment for molding.

[0036] After the product has solidified and formed, as the moving rod 8 moves backward, one end of the sliding rod 18 contacts and is blocked by the fixed rod 19 at the other end of the support frame 4. Meanwhile, the formed product continues to move, causing the sliding rod 18 to slide relative to the mold 20. At the same time, the spring 17 is compressed. Under the elastic force of the spring 17, the sliding rod 18 pushes the formed product out from one side of the mold 20. The demolded product falls into the storage box 15 that is slidably connected to the support frame 4 for easy collection later.

[0037] When it is necessary to replace the mold 20 with a different specification, the current to the coil of the magnetic conductor 11 is cut off. The magnetism of the magnetic conductor 11 disappears, and the magnetic attraction between it and the permanent magnet inside the mold 20 is released. At this time, the old mold 20 can be removed directly. After replacing it with the new specification mold 20, the new mold 20 is attached to the sealing plate 7 and aligned with the extrusion hole 21. Current is passed through the coil of the magnetic conductor 11 to make it magnetic, and it re-forms the magnetic attraction with the permanent magnet inside the new mold 20, thus achieving a tight fixation of the new mold 20. The whole process does not require an additional mechanical fixing structure. The mold 20 can be replaced quickly by switching the current on and off, which greatly improves the device's adaptability to different product specifications.

[0038] Working principle: When polypropylene needs to be extruded, polypropylene granules are put into the feed port 2, and then the first motor 3 is started. Its output power drives the threaded rod 16 inside the polypropylene extrusion device 1 to rotate, which drives the raw material polypropylene to be conveyed forward along the internal cavity of the polypropylene extrusion device 1.

[0039] When the second motor 9 starts, the magnetic conductor 11 generates magnetism after current is passed through its own coil, and generates magnetic attraction with the permanent magnet inside the mold 20, so that the mold 20 is tightly attached and fixed to the sealing plate 7 to prevent the leakage of molten material and provide a stable environment for molding.

[0040] When it is necessary to replace the mold 20 with a different specification, the current to the coil of the magnetic conductor 11 is cut off. The magnetism of the magnetic conductor 11 disappears, and the magnetic attraction between it and the permanent magnet inside the mold 20 is released. At this time, the old mold 20 can be removed directly. After replacing it with the new specification mold 20, the new mold 20 is attached to the sealing plate 7 and aligned with the extrusion hole 21. Current is passed through the coil of the magnetic conductor 11 to make it magnetic, and it re-forms the magnetic attraction with the permanent magnet inside the new mold 20, thus achieving a tight fixation of the new mold 20. The whole process does not require an additional mechanical fixing structure. The mold 20 can be replaced quickly by switching the current on and off, which greatly improves the device's adaptability to different product specifications.

[0041] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A polypropylene extrusion molding apparatus, comprising a polypropylene extrusion device (1), characterized in that: The polypropylene extrusion device (1) is provided with a feed port (2), a first motor (3) is fixedly connected to one end of the polypropylene extrusion device (1), a support frame (4) is fixedly connected to the bottom of the polypropylene extrusion device (1), a heating ring (5) is provided on the polypropylene extrusion device (1), a product container (6) is fixedly connected to the other end of the polypropylene extrusion device (1), and a threaded rod (16) is rotatably connected inside the polypropylene extrusion device (1). Cooling pipes (13) are fixedly connected to both sides of the product container (6), and a water tank (14) is fixedly connected to one end of the cooling pipes (13). A moving rod (8) is fixedly connected to one side of the support frame (4), and a sealing plate (7) is fixedly connected to one end of the moving rod (8). Cooling pipe (13) runs through the interior of product container (6), and sealing plate (7) is attached to the surface of product container (6).

2. The polypropylene extrusion molding apparatus according to claim 1, characterized in that: The polypropylene extrusion device (1) has an extrusion hole (21) at one end. A mold (20) is fixedly connected to one side of the sealing plate (7). Two fixing blocks (10) are fixedly connected to the front of the sealing plate (7). A connecting rod (12) is fixedly connected to one side of the fixing block (10). A magnetic conductor (11) is fixedly connected to one end of the connecting rod (12). A second motor (9) is fixedly connected to the other side of the fixing block (10).

3. The polypropylene extrusion molding apparatus according to claim 2, characterized in that: The output end of the second motor (9) is fixedly connected to the magnetic conductor (11), and a permanent magnet is provided inside the mold (20).

4. The polypropylene extrusion molding apparatus according to claim 3, characterized in that: The mold (20) is internally slidably connected to a sliding rod (18), and a spring (17) is provided on the sliding rod (18). The other end of the support frame (4) is fixedly connected to a fixing rod (19), and a storage box (15) is slidably connected to the support frame (4).

5. A polypropylene extrusion molding apparatus according to claim 4, characterized in that: The sliding rod (18) passes through the interior of the mold (20) and the sealing plate (7). One end of the spring (17) is fixedly connected to the sealing plate (7), and the other end of the spring (17) is fixedly connected to the sliding rod (18).

6. A polypropylene extrusion molding apparatus according to claim 5, characterized in that: The heating rings (5) are spaced apart along the length of the polypropylene extrusion device (1), and the heating rings (5) are annular and are disposed on the surface of the polypropylene extrusion device (1).

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