Calendering device for plastic film production and processing

Abstract

The utility model discloses a calendaring device for producing and processing plastic films, which comprises a U-shaped equipment base, an upper calendaring roller is rotatably arranged on the U-shaped equipment base, a main calendaring roller is rotatably arranged on the U-shaped equipment base below the upper calendaring roller, a motor penetrates through the U-shaped equipment base, and the main calendaring roller is rotatably arranged on the U-shaped equipment base. A motor is arranged on the U-shaped equipment base, an output shaft of the motor is fixedly connected with the main calendering roller, a heating equipment cavity is formed in the upper calendering roller, a plurality of groups of independent electromagnetic coils which are axially arranged along the upper calendering roller are embedded in the heating equipment cavity, a cooling water pipe is arranged in the upper calendering roller, and a processing rack is fixedly connected to one side of the U-shaped equipment base. The utility model belongs to the technical field of plastic film production, and effectively solves the problems that when a calendering device for plastic film production and processing is used, the uniformity of calendering processing is easily influenced due to temperature shifting, the heat energy loss is larger, and waste is easily generated.

Description

Technical Field

[0001] This utility model belongs to the field of plastic film production technology, specifically referring to a calendering device for plastic film production and processing. Background Technology

[0002] With continuous economic development and the ongoing adjustment of rural industrial structure, the demand for plastic film from the production sector is constantly increasing. Plastic film is a new type of material produced by fusing polyethylene and resin materials. It is widely used for packaging in the food, pharmaceutical, and chemical industries. During the production of plastic film, the raw materials need to be calendered to make the plastic film thinner and lighter, thus improving its extensibility.

[0003] Existing equipment typically uses two counter-rotating calendering rollers to calender plastic films. When traditional calendering equipment uses steam or resistance heating, the temperature fluctuations are large, which can lead to increased thickness inhomogeneity, surface defects, and problems affecting product quality.

[0004] Furthermore, the heating system relies on resistance or steam, resulting in low thermal efficiency. Traditional calendering rolls have insufficient machining precision, and thermal expansion or wear can cause deformation of the roll surface. Additionally, the material flow is uneven or the temperature control is unstable. Utility Model Content

[0005] The technical problem this invention aims to solve is that the calendering equipment used in plastic film production and processing is prone to temperature fluctuations that affect the uniformity of calendering, and also results in significant heat loss and waste.

[0006] The technical solution adopted by this utility model is as follows:

[0007] This utility model discloses a calendering device for plastic film production and processing, comprising a U-shaped equipment base, an upper calendering roller rotatably mounted on the U-shaped equipment base, a main calendering roller rotatably mounted on the U-shaped equipment base below the upper calendering roller, a motor passing through the U-shaped equipment base, the output shaft of the motor being fixedly connected to the main calendering roller, a heating equipment cavity provided inside the upper calendering roller, multiple sets of independent electromagnetic coils arranged along the axial direction of the upper calendering roller embedded in the heating equipment cavity, a cooling water pipe provided inside the upper calendering roller, and a processing table fixedly connected to one side of the U-shaped equipment base.

[0008] Furthermore, one end of the upper calendering roller is provided with a control valve that passes through a cooling water pipe, and a water injection pipe is connected to the control valve.

[0009] Furthermore, the other end of the upper calendering roller is rotatably connected to a water outlet pipe that passes through the cooling water pipe. The water outlet pipe is equipped with a second control valve, and the second control valve is connected to a waste heat utilization pipe. The waste heat utilization pipe is connected to a preheating water tank fixed to one side of the U-shaped equipment base.

[0010] Furthermore, vertical grooves are provided on both sides of the U-shaped equipment base, and sliding blocks are slidably provided on the vertical grooves. A limit frame is fixedly connected to the upper part of the sliding block, and a support roller is rotatably provided on the sliding block.

[0011] Furthermore, a cylinder passes through the lower part of the U-shaped equipment base, and a lifting plate disposed on the lower section of the sliding block is fixed to the output end of the cylinder.

[0012] The beneficial effects of this utility model by adopting the above structure are as follows:

[0013] 1. By setting multiple sets of electromagnetic induction coils inside the roller, zoned heating can be achieved, enabling independent control of the roller surface temperature in each zone;

[0014] 2. Waste heat is recovered and the raw materials are preheated by cooling water inside the rollers, reducing heat loss;

[0015] 3. In wide-width calendering equipment, a support roller is installed below the main calendering roller to solve the problem of sagging in the middle of the roller. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure from another perspective of an embodiment of the present utility model;

[0018] Figure 3 This is a breakdown diagram of the internal structure of the upper calendering roller;

[0019] Figure 4 This is a reference diagram showing the usage status of the support roller.

[0020] The components include: 1. U-shaped equipment base; 11. Upper calendering roller; 12. Main calendering roller; 13. Motor; 2. Heating equipment cavity; 21. Independent electromagnetic coil; 22. Cooling water pipe; 23. Processing table; 3. Control valve one; 31. Water injection pipe; 4. Water outlet pipe; 41. Control valve two; 42. Waste heat utilization pipe; 43. Preheating water tank; 5. Vertical chute; 51. Sliding block; 52. Limiting frame; 53. Support roller; 6. Cylinder; 61. Lifting plate. Detailed Implementation

[0021] Example 1:

[0022] like Figure 1 , Figure 2 , Figure 3 As shown, the present invention proposes a calendering device for plastic film production and processing, comprising a U-shaped equipment base 1, an upper calendering roller 11 rotatably mounted on the U-shaped equipment base 1, a main calendering roller 12 rotatably mounted on the U-shaped equipment base 1 below the upper calendering roller 11, a motor 13 passing through the U-shaped equipment base 1, the output shaft of the motor 13 being fixedly connected to the main calendering roller 12, a heating equipment cavity 2 inside the upper calendering roller 11, multiple sets of independent electromagnetic coils 21 arranged axially along the upper calendering roller 11 embedded in the heating equipment cavity 2, a cooling water pipe 22 inside the upper calendering roller 11, and a processing table 23 fixedly connected to one side of the U-shaped equipment base 1; in use, the independent electromagnetic coils 21 generate eddy currents through high-frequency alternating current, directly heating the roller body to achieve rapid response heating, and the multiple sets of independent electromagnetic coils 21, through temperature control, can avoid the problem of slow heat dissipation in the middle of the roller and fast heat dissipation at both ends when heating as a whole.

[0023] like Figure 1 , 2 As shown, one end of the upper calendering roller 11 is provided with a control valve 3 that passes through the cooling water pipe 22. The control valve 3 is connected to a water injection pipe 31. After the control valve 3 is opened, cooling water is injected into the cooling water pipe 22 through the water injection pipe 31 to exchange heat with the internal heat energy. The other end of the upper calendering roller 11 is rotatably connected to a water outlet pipe 4 that passes through the cooling water pipe 22. The water outlet pipe 4 is provided with a control valve 41. The control valve 41 is connected to a waste heat utilization pipe 42. The waste heat utilization pipe 42 is connected to a preheating water tank 43 that is fixed to one side of the U-shaped equipment base 1.

[0024] During use, the cooling water that has absorbed waste heat is discharged from the waste heat utilization pipe 42 into the preheating water tank 43, where unprocessed raw materials can be placed for preheating treatment, reducing the waste of heat energy.

[0025] Example 2:

[0026] like Figure 4 As shown, the U-shaped equipment base 1 has vertical grooves 5 on both sides, and a sliding block 51 is slidably mounted on the vertical groove 5. A limit frame 52 is fixedly connected to the upper part of the sliding block 51, and a support roller 53 is rotatably mounted on the sliding block 51. It should be noted that for the wide main calendering roller 12, the middle of the roller is prone to sagging. By adjusting the support roller 53, the lower part of the main calendering roller 12 is supported, avoiding deformation caused by sagging in the middle and resulting in a decrease in processing quality. The limit frame 52 limits the raised position of the vertical groove 5 to prevent it from exceeding the usage position.

[0027] A cylinder 6 runs through the lower part of the U-shaped equipment base 1. A lifting plate 61 is fixedly connected to the output end of the cylinder 6 and located in the lower section of the sliding block 51. By controlling the extension and retraction of the output end of the cylinder 6, the height of the lifting plate 61 is adjusted, thereby realizing the position adjustment of the support roller 53.

[0028] The above is the entire process of using a calendering device for the production and processing of plastic film.

[0029] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

[0030] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

Claims

1. A calender device for plastic film production and processing, comprising a U-shaped device base (1), an upper calender roller (11) is rotatably arranged on the U-shaped device base (1), and a main calender roller (12) is rotatably arranged on the U-shaped device base (1) below the upper calender roller (11), characterized in that: A motor (13) runs through the U-shaped equipment base (1). The output shaft of the motor (13) is fixedly connected to the main calendering roller (12). A heating equipment cavity (2) is provided inside the upper calendering roller (11). Multiple independent electromagnetic coils (21) are embedded in the heating equipment cavity (2) along the axial direction of the upper calendering roller (11). A cooling water pipe (22) is provided inside the upper calendering roller (11). A processing table (23) is fixedly connected to one side of the U-shaped equipment base (1).

2. The calendering device for plastic film production and processing according to claim 1, characterized in that: One end of the upper calendering roller (11) is provided with a control valve (3) that passes through the cooling water pipe (22), and the control valve (3) is connected to a water injection pipe (31).

3. The calendering device for plastic film production and processing according to claim 2, characterized in that: The other end of the upper calendering roller (11) is rotatably connected to a water outlet pipe (4) that passes through the cooling water pipe (22). The water outlet pipe (4) is equipped with a control valve (41). The control valve (41) is connected to a waste heat utilization pipe (42). The waste heat utilization pipe (42) is connected to a preheating water tank (43) that is fixed to one side of the U-shaped equipment base (1).

4. The calendering device for plastic film production and processing according to claim 1, characterized in that: The U-shaped equipment base (1) has vertical grooves (5) on both sides, and a sliding block (51) is slidably provided on the vertical groove (5). A limit frame (52) is fixedly connected to the upper part of the sliding block (51), and a support roller (53) is rotatably provided on the sliding block (51).

5. The calendering device for plastic film production and processing according to claim 4, characterized in that: A cylinder (6) runs through the lower part of the U-shaped equipment base (1), and a lifting plate (61) is fixedly connected to the output end of the cylinder (6) and located in the lower section of the sliding block (51).

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