A calender for processing plastic products

Abstract

This utility model relates to a calendering machine for processing plastic products in the field of plastic calendering technology. It includes a support base and two calendering rollers. Mounting seats are fixedly installed on the inner walls of both ends of the support base, and mounting rollers are fixedly connected to the inner sides of the two calendering rollers. Compared with the prior art, the mounting seats, drive rods, and mounting shafts facilitate the operation of the calendering machine. During use, the two mounting shafts can be rotated by a knob, causing the upper and lower connecting seats to move synchronously. This allows for adjustment of the spacing between the calendering rollers via the movable seats. Furthermore, during the movement of the calendering rollers, the worm gear remains engaged with the outer side of the bidirectional worm. Starting the motor allows the two calendering rollers to move synchronously, and the opposite rotation directions are achieved under the action of the threads at both ends of the bidirectional worm, thus better calendering the plastic products.

Description

Technical Field

[0001] This utility model relates to the field of plastic calendering technology, and in particular to a calendering machine for processing plastic products. Background Technology

[0002] Plastics are high molecular weight compounds formed by polymerizing monomers through addition or condensation reactions. They are commonly known as plastics or resins and their composition and shape can be freely changed. They are composed of synthetic resins and additives such as fillers, plasticizers, stabilizers, lubricants, and colorants. Calenders are frequently used in plastic processing. A calender consists of two or more rollers arranged in a certain pattern. Under a certain temperature, rubber or plastic is pressed and stretched into a sheet of a certain thickness and surface shape.

[0003] Existing calenders used in plastic product processing can adjust the distance between two rollers using a roller gap adjustment device. However, to prevent interference with the roller rotation during calendering, an independent drive device is usually installed on each roller. This method not only requires matching of multiple drive devices but also occupies a large amount of moving space. Therefore, we propose a calender for plastic product processing. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a calender for processing plastic products, which has the function of conveniently and efficiently adjusting the calender roller gap without affecting the driving of the rollers.

[0005] The technical solution of this utility model is:

[0006] A calender for processing plastic products includes a support base and two calendering rolls. Mounting seats are fixedly installed on the inner walls of both ends of the support base. Mounting rolls are fixedly connected to the inner sides of the two calendering rolls. Connecting seats are rotatably installed on the outer sides of both mounting rolls. Movable seats are fixedly connected to the opposite ends of the connecting seats. A single bidirectional lead screw is threaded onto the inner side of each of the two movable seats. The bidirectional lead screw is rotatably mounted on the inner side of the mounting seat via a mounting shaft. A bidirectional worm gear is provided on the inner side of one mounting seat near the calendering roll. The bidirectional worm gear is rotatably mounted on the inner side of the mounting seat via a drive rod. A worm wheel, meshing with the bidirectional worm gear, is fixedly connected to the outer side of one end of each of the two mounting rolls.

[0007] In a further technical solution, a fixed base is fixedly connected to the top of the two mounting seats, and a motor is fixedly mounted on the upper surface of the fixed base. The top ends of the drive rod and the two mounting shafts respectively pass through the fixed base. The top end of the drive rod is fixedly connected to the output end of the motor through a coupling. A transmission belt and two transmission wheels are provided on the inner side of the fixed base. The transmission belt is sleeved on the outer side of the middle part of the two transmission wheels. The transmission wheels are fixedly mounted on the outer side of the part of the mounting shaft located inside the fixed base.

[0008] In a further technical solution, the front and rear surfaces of the connecting seat and the movable seat are slidably mounted on the inner walls of the front and rear ends of the mounting seat via guide rails. Partitions are fixedly connected to the inner walls of the front and rear ends of the mounting seat near the calendering roller, and the mounting roller is slidably mounted in the gap between the two partitions.

[0009] In a further technical solution, the two movable seats at both ends are respectively provided with circular grooves on opposite sides that are adapted to the mounting rollers, and the two ends of the mounting rollers are respectively rotatably installed in the two circular grooves.

[0010] In a further technical solution, mounting grooves penetrating the top of the support are respectively opened on the inner walls of both ends of the support base, and the two mounting bases are respectively fixedly installed in the mounting grooves.

[0011] In a further technical solution, an annular groove is provided on the outer side of the middle part of the transmission wheel, and the two ends of the transmission belt are respectively rotatably installed on the inner side of the two annular grooves.

[0012] The beneficial effects of this utility model are:

[0013] 1. Compared with the existing technology, the calendering machine is designed with mounting bases, drive rods, and mounting shafts. During operation, the two mounting shafts can be rotated by a knob, and the two mounting shafts will drive the upper and lower connecting seats to move synchronously. This allows the calendering rollers to be adjusted by moving the movable seats. During the movement of the calendering rollers, the worm gear remains engaged with the outside of the bidirectional worm. At this time, starting the motor can still drive the two calendering rollers to move synchronously. Furthermore, under the action of the threads with different helical directions at both ends of the bidirectional worm, they can rotate in opposite directions, which can better achieve the calendering of plastic products.

[0014] 2. Compared with the existing technology, the fixed seat and transmission belt make it easier for the calender to rotate during use. When one of the mounting shafts is rotated by turning the knob, the friction between the transmission belt and the transmission wheel can drive the other transmission wheel to rotate synchronously. This makes it easier to achieve synchronous rotation of the two mounting shafts and adjust the distance between the two calender rolls. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the mounting base according to an embodiment of the present utility model;

[0017] Figure 3 This is a cross-sectional structural schematic diagram of the mounting base according to an embodiment of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the calendering roller according to an embodiment of the present invention;

[0019] Figure 5 This is a cross-sectional structural schematic diagram of the fixing seat according to an embodiment of the present utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Support base; 2. Calendering roll; 3. Mounting base; 4. Fixed base; 5. Motor; 6. Partition plate; 7. Drive rod; 8. Mounting shaft; 9. Mounting roll; 10. Connecting base; 11. Movable base; 12. Double-acting lead screw; 13. Double-acting worm gear; 14. Transmission belt; 15. Transmission wheel; 16. Worm gear. Detailed Implementation

[0022] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0023] Example:

[0024] like Figures 1-5As shown, a calender for processing plastic products includes a support base 1 and two calendering rolls 2. Mounting seats 3 are fixedly installed on the inner walls of both ends of the middle part of the support base 1, providing support for both ends of the calendering rolls 2. Mounting rolls 9 are fixedly connected to the inner sides of the two calendering rolls 2, allowing the calendering rolls 2 to rotate between the two connecting seats 10. Connecting seats 10 are rotatably installed on the outer sides of both ends of the two mounting rolls 9, providing support for both ends of the mounting rolls 9. Movable seats 11 are fixedly connected to the opposite ends of the connecting seats 10, allowing the calendering rolls 2 to adjust their position under the push of a bidirectional screw 12. The same bidirectional screw 12 is threaded onto the inner side of the two movable seats 11 at each end, allowing the two calendering rolls 2 to move synchronously in opposite directions under the action of threads with different helical directions at both ends. The bidirectional screw 12 is rotatably mounted on the inner side of the mounting seat 3 via a mounting shaft 8. A bidirectional worm gear 13 is provided on the inner side of one of the mounting seats 3 near the calendering roll 2, allowing the worm gear 16 to be pushed in different directions through threaded grooves with different helical directions at both ends. The bidirectional worm gear 13 is rotatably mounted on the inner side of the mounting base 3 via the drive rod 7. A worm wheel 16, meshing with the bidirectional worm gear 13, is fixedly connected to the outer side of one end of each of the two mounting rollers 9. This connection with the bidirectional worm gear 13 prevents the adjustment of the calender roller 2 position from affecting the drive of the calender roller 2. The front and rear surfaces of the connecting seat 10 and the movable seat 11 are slidably mounted on the inner walls of the front and rear ends of the mounting base 3 via guide rails, ensuring the stability of the movement of the connecting seat 10 and the movable seat 11. The front end of the mounting base 3 closest to the calender roller 2... Partition plates 6 are fixedly connected to the inner walls of both ends to limit the position of the mounting roller 9. The mounting roller 9 is slidably installed in the gap between the two partition plates 6. The movable seats 11 at both ends are respectively provided with circular grooves that are adapted to the mounting roller 9 on opposite sides to facilitate the rotation support of the mounting roller 9. The two ends of the mounting roller 9 are respectively rotatably installed in the two circular grooves. The inner walls of both ends of the support seat 1 are respectively provided with mounting grooves that penetrate the top of the support seat 1. The two mounting seats 3 are respectively fixedly installed in the mounting grooves to facilitate the stable installation of the mounting seats 3.

[0025] The working principle of the above technical solution is as follows:

[0026] First, the two mounting shafts 8 are rotated according to the processing requirements. The two mounting shafts 8 drive the two bidirectional lead screws 12 to rotate. Under the action of the threads with different directions of rotation at both ends, the bidirectional lead screws 12 push the upper and lower movable seats 11 to move in opposite directions. The two movable seats 11 drive the mounting rollers 9 to move through the connecting seats 10. The two mounting rollers 9 drive the two calendering rollers 2 to adjust the spacing. When the mounting rollers 9 move, they also drive the worm gears 16 to roll on the bidirectional worm gear 13. Finally, the motor 5 drives the bidirectional worm gear 13 to drive the two worm gears 16 to rotate in opposite directions, so as to realize the synchronous rotation of the two calendering rollers 2 after the spacing adjustment to calender the plastic products.

[0027] In another embodiment, such as Figure 5 As shown, a fixed base 4 is fixedly connected to the top of the two mounting bases 3. A motor 5 is fixedly installed on the upper surface of the fixed base 4, which can provide power for the rotation of the calendering roll 2. The top ends of the drive rod 7 and the two mounting shafts 8 pass through the fixed base 4, which can realize the installation and protection of the transmission belt 14 and the transmission wheel 15. The top end of the drive rod 7 is fixedly connected to the output end of the motor 5 through a coupling. The inner side of the fixed base 4 is provided with a transmission belt 14 and two transmission wheels 15. The transmission belt 14 is sleeved on the outer side of the middle part of the two transmission wheels 15. The transmission wheels 15 are fixedly installed on the outer side of the mounting shaft 8 located inside the fixed base 4. An annular groove is opened on the outer side of the middle part of the transmission wheel 15. The two ends of the transmission belt 14 are respectively rotatably installed on the inner side of the two annular grooves, which ensures the stability of the transmission belt 14 installed on the outer side of the two transmission wheels 15.

[0028] When one of the mounting shafts 8 starts to rotate under the drive of the knob, the mounting shaft 8 will drive the transmission belt 14 through the transmission wheel 15. The transmission belt 14, under the action of the other transmission wheel 15, drives the other mounting shaft 8 to rotate synchronously, thereby conveniently realizing the synchronous rotation of the two bidirectional lead screws 12 so as to realize the adjustment of the gap between the two calendering rollers 2.

[0029] The above embodiments merely illustrate specific implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A calender for processing plastic articles, comprising a support base (1) and two calendering rollers (2), characterized in that: Mounting seats (3) are fixedly installed on the inner walls of the two ends of the middle part of the support base (1). Mounting rollers (9) are fixedly connected to the inner sides of the two calendering rollers (2). Connecting seats (10) are rotatably installed on the outer sides of the two mounting rollers (9). Movable seats (11) are fixedly connected to the opposite ends of the connecting seats (10) at both ends. The same bidirectional screw (12) is threaded on the inner side of the two movable seats (11) at each end. The bidirectional screw (12) is rotatably installed on the inner side of the mounting base (3) through the mounting shaft (8). A bidirectional worm (13) is provided on the inner side of one end of the mounting base (3) near the calendering roller (2). The bidirectional worm (13) is rotatably installed on the inner side of the mounting base (3) through the drive rod (7). A worm wheel (16) that meshes with the bidirectional worm (13) is fixedly connected to the outer side of one end of the two mounting rollers (9).

2. The calender according to claim 1, wherein: A fixed base (4) is fixedly connected to the top of the two mounting bases (3). A motor (5) is fixedly installed on the upper surface of the fixed base (4). The top ends of the drive rod (7) and the two mounting shafts (8) pass through the fixed base (4). The top end of the drive rod (7) is fixedly connected to the output end of the motor (5) through a coupling. A transmission belt (14) and two transmission wheels (15) are provided on the inner side of the fixed base (4). The transmission belt (14) is sleeved on the outer side of the middle part of the two transmission wheels (15). The transmission wheels (15) are fixedly installed on the outer side of the mounting shaft (8) located inside the fixed base (4).

3. The calender according to claim 1, wherein: The front and rear surfaces of the connecting seat (10) and the movable seat (11) are slidably mounted on the inner walls of the front and rear ends of the mounting seat (3) via guide rails. The inner walls of the front and rear ends of the mounting seat (3) near the calendering roller (2) are respectively fixedly connected with partitions (6). The mounting roller (9) is slidably mounted in the gap between the two partitions (6).

4. The calender according to claim 1, wherein: The movable seats (11) at both ends are respectively provided with circular grooves on opposite sides that are adapted to the mounting rollers (9), and the two ends of the mounting rollers (9) are respectively rotatably installed in the two circular grooves.

5. The calender according to claim 1, wherein: The support base (1) has mounting grooves on its inner walls at both ends, which pass through the top of the support base (1), and the two mounting bases (3) are fixedly installed in the mounting grooves.

6. The calender according to claim 2, wherein: The outer side of the middle part of the transmission wheel (15) is provided with an annular groove, and the two ends of the transmission belt (14) are respectively rotatably installed on the inner side of the two annular grooves.

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