SMC sheet double roll calender device

Abstract

The utility model discloses a kind of SMC sheet double-roller calendering devices, including base, the left end of base is equipped with motor, and the output shaft of motor is connected with the shaft of calendering roller by transmission gear, the calendering roller is provided with two, and calendering roller rotation is installed in the inside of support;Further include: movable shaft, fixed to the one end of calendering roller away from transmission gear, the movable shaft is engaged transmission by bevel gear set and transmission shaft, and the outside of transmission shaft is provided with suction assembly, the suction assembly is connected with fixed box, and fixed box is installed in the side of calendering roller, and the upper edge of fixed box is pasted with cleaning strip.The SMC sheet double-roller calendering device, in calendering working process, part of material or dust adhered to calendering roller surface can be cleaned in time, avoid affecting the flatness of subsequent calendering product surface, and then improve product quality.

Description

Technical Field

[0001] This utility model relates to the field of SMC sheet processing technology, specifically to a two-roll calendering device for SMC sheets. Background Technology

[0002] SMC sheet is a sheet molding compound, mainly made of resin paste impregnated with fiber or chopped fiber felt covered with polyhexene film on both sides, and then calendered. SMC sheet processing typically employs twin-roll calendering. For example, a calendering device for PVC sheet production, with announcement number CN211518269U, includes a calendering base, an upper pressure roller, a lower pressure roller, and a limiting device. Two support plates are symmetrically connected to both sides of the calendering base, connected via the upper and lower pressure rollers. A limiting device is installed on the calendering base located on the lower pressure roller side. The sheet moves along the upper surface of the support blocks between the upper and lower pressure rollers for calendering. Two transverse limiting plates fix the direction of the sheet's movement, ensuring the sheet's orientation before passing through the upper and lower pressure rollers. This prevents the sheet from shifting direction during calendering, thus avoiding uneven calendering. Adjusting the distance between the two transverse limiting plates accommodates sheets of different widths, increasing the usability of the limiting device. However, the calendering equipment used for PVC sheet production still has the following drawbacks in actual use:

[0003] In traditional calendering equipment, some material or dust will adhere to the surface of the calendering rolls during the calendering process. If it is not cleaned in time, it will affect the flatness of the surface of the calendered products and thus affect the product quality. The calendering rolls are usually cleaned manually at regular intervals, which cannot achieve the effect of timely cleaning. To address the above problems, there is an urgent need for innovative design based on the original twin-roll calendering equipment. Utility Model Content

[0004] The purpose of this utility model is to provide a twin-roll calendering device for SMC sheets, in order to solve the problem mentioned in the background art that in the traditional calendering device, some material or dust will adhere to the surface of the calendering roller during the calendering process. If it is not cleaned in time, it will affect the flatness of the surface of the subsequent calendered products, and thus affect the product quality. Usually, the calendering roller is cleaned manually at regular intervals, so it is impossible to achieve the effect of timely cleaning.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dual-roll calendering device for SMC sheets, comprising a base, an electric motor mounted on the left end of the base, and the output shaft of the electric motor being connected to the shaft of the calendering rolls via a transmission gear. Two calendering rolls are provided and are rotatably mounted on the inner side of the support. The device also includes a movable shaft fixed to the end of the calendering roll away from the transmission gear. The movable shaft is driven by a bevel gear set meshing with the transmission shaft, and an air suction component is provided on the outer side of the transmission shaft. The air suction component is connected to a fixed box, which is mounted on the side of the calendering rolls, and a cleaning strip is affixed to the upper edge of the fixed box.

[0006] Preferably, the air intake assembly includes a movable plate sleeved on the outside of the drive shaft, and the outside of the drive shaft is provided with two threaded grooves in opposite directions. The drive shaft and the movable plate are threadedly connected. When the drive shaft rotates, it can drive the movable plate to move back and forth inside the fixed cylinder through the threaded transmission with the movable plate.

[0007] Preferably, a fixing cylinder is sleeved on the outer side of the movable plate, and the fixing cylinder is fixed on the bracket at the right end. A fixing block is fixed on the side of the movable plate. When the movable plate moves, it drives the fixing block to slide in the limiting groove, thereby limiting the movable plate.

[0008] Preferably, a limiting groove is provided in the fixing cylinder outside the fixing block, and the edge of the movable plate slides against the inner wall of the fixing cylinder. The fixing block and the limiting groove are slidably connected, and the gas is drawn in by the back and forth movement of the movable plate.

[0009] Preferably, an air outlet pipe is symmetrically arranged through one side of the fixed cylinder, and an air inlet pipe is symmetrically arranged on the other side of the fixed cylinder. Both the air outlet pipe and the air inlet pipe are equipped with a one-way valve. When the movable plate moves, the air outlet pipe can only discharge the gas in the fixed cylinder, while the air inlet pipe can only draw the gas into the fixed cylinder.

[0010] Preferably, the end of the air inlet pipe away from the fixed cylinder is fixedly connected to the middle section of the transmission pipe, and both ends of the transmission pipe are fixedly connected to the ends of the two fixed boxes. The fixed cylinder is interconnected with the interior of the fixed box through the air inlet pipe and the transmission pipe. The suction force can be transmitted to the fixed box through the air inlet pipe and the transmission pipe to adsorb the dust adhering to the surface of the calendering roll.

[0011] Preferably, the side of the fixing box closest to the calendering roller has an arc-shaped structure, and fixing holes are uniformly reserved on the arc surface inside the fixing box. The cleaning strip is made of sponge material and is in close contact with the surface of the calendering roller.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the SMC sheet twin-roll calendering device can promptly clean some of the material or dust adhering to the surface of the calendering rolls during the calendering process, avoiding affecting the flatness of the surface of the subsequent calendered products, thereby improving product quality. The specific details are as follows:

[0013] 1. When the calender roll rotates, its surface can come into contact with the cleaning strip, thereby cleaning some of the material or dust adhering to the surface of the calender roll and ensuring the flatness of the calender roll surface;

[0014] 2. Through the threaded transmission between the drive shaft and the movable plate, and the limiting groove and the fixed block, the movable plate slides in the fixed cylinder, and the fixed block slides in the limiting groove. No matter which direction the movable plate moves, the gas in the fixed cylinder can be squeezed out from the air outlet pipe, and the resulting negative pressure is transmitted to the air inlet pipe. This allows the dust adhering to the calendering roller to be sucked into the fixed box through the fixed hole. Attached Figure Description

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

[0016] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 4 This is a cross-sectional view of the fixed cylinder structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the fixing block connecting limiting groove structure of this utility model;

[0020] Figure 6 This is a cross-sectional view of the fixing box of this utility model.

[0021] In the diagram: 1. Base; 2. Motor; 3. Transmission gear; 4. Calendering roller; 5. Support; 6. Movable shaft; 7. Bevel gear set; 8. Transmission shaft; 9. Movable plate; 10. Fixed cylinder; 11. Fixed block; 12. Limiting groove; 13. Air outlet pipe; 14. Air inlet pipe; 15. Transmission pipe; 16. Fixed box; 17. Cleaning strip; 18. Fixing hole. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-6 This utility model provides a technical solution:

[0024] To address the problems existing in the prior art, this embodiment provides the following technical solution: an SMC sheet double-roll calendering device, comprising a base 1, a motor 2 mounted on the left end of the base 1, and the output shaft of the motor 2 being interconnected with the shaft of the calendering roller 4 via a transmission gear 3. Two calendering rollers 4 are provided, and the calendering rollers 4 are rotatably mounted on the inner side of a bracket 5; it also includes: a movable shaft 6, fixed to the end of the calendering roller 4 away from the transmission gear 3, the movable shaft 6 being meshed with the transmission shaft 8 via a bevel gear set 7, and an air suction component being provided on the outer side of the transmission shaft 8, the air suction component being interconnected with a fixed box 16, the fixed box 16 being mounted on the side of the calendering roller 4, and a cleaning strip 17 being affixed to the upper edge of the fixed box 16.

[0025] In existing calendering equipment, some material or dust adheres to the surface of the calendering roller 4 during the calendering process. If it is not cleaned in time, it will affect the flatness of the surface of the subsequent calendered products, thus affecting the product quality. Usually, the calendering roller 4 is cleaned manually at regular intervals, which cannot achieve the effect of timely cleaning. The suction assembly includes a movable plate 9 sleeved on the outside of the drive shaft 8, and the outside of the drive shaft 8 is provided with two threaded grooves in opposite directions. The drive shaft 8 and the movable plate 9 are threaded together. A fixed cylinder 10 is sleeved on the outside of the movable plate 9, and the fixed cylinder 10 is fixed on the bracket 5 at the right end. A fixed block 11 is fixed on the side of the movable plate 9. An opening is made in the fixed cylinder 10 outside the fixed block 11. The fixed cylinder 10 has a limiting groove 12, and the edge of the movable plate 9 slides against the inner wall of the fixed cylinder 10. The fixed block 11 and the limiting groove 12 are slidably connected. A symmetrical air outlet pipe 13 runs through one side of the fixed cylinder 10, and an air inlet pipe 14 is symmetrically arranged on the other side of the fixed cylinder 10. Both the air outlet pipe 13 and the air inlet pipe 14 are equipped with one-way valves. The end of the air inlet pipe 14 away from the fixed cylinder 10 is fixedly connected to the middle section of the transmission pipe 15, and both ends of the transmission pipe 15 are fixedly connected to the ends of the two fixed boxes 16. The fixed cylinder 10 is interconnected with the interior of the fixed box 16 through the air inlet pipe 14 and the transmission pipe 15. The side of the fixed box 16 closest to the calendering roller 4 has an arc-shaped structure, and the inner side of the fixed box 16... The curved surface has uniformly pre-drilled fixing holes 18. The cleaning strip 17 is made of sponge and is in close contact with the surface of the calendering roller 4. The SMC sheet to be calendered is conveyed downwards from above the calendering roller 4, vertically between the two calendering rollers 4. Then, the motor 2 runs, driving the two calendering rollers 4 to rotate relative to each other through the transmission gear 3, thus calendering the SMC sheet. The calendered product is then conveyed from below the calendering roller 4. When the calendering roller 4 rotates, its surface can contact the cleaning strip 17, thereby cleaning some of the material or dust adhering to the surface of the calendering roller 4, ensuring the flatness of the calendering roller 4 surface. When the calendering roller 4 rotates, it drives the movable shaft 6 to rotate, which in turn drives the bevel gear set to rotate. The meshing transmission of 7 drives the transmission shaft 8 to rotate. When the transmission shaft 8 rotates, it is driven by the threaded transmission with the movable plate 9 and the limiting groove 12 and the fixed block 11, so that the movable plate 9 can slide in the fixed cylinder 10 and the fixed block 11 can slide in the limiting groove 12. Since both ends of the fixed cylinder 10 are provided with an air outlet pipe 13 and an air inlet pipe 14, no matter which direction the movable plate 9 moves, the gas in the fixed cylinder 10 can be squeezed out from the air outlet pipe 13, and the resulting negative pressure is transmitted to the air inlet pipe 14. This can suck the dust adhering to the calender roll 4 or the impurities scraped off the calender roll 4 by the cleaning strip 17 into the fixed box 16 through the fixed hole 18, so as to further clean the calender roll 4.

[0026] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A twin-roll calendering device for SMC sheet, comprising a base (1), wherein a motor (2) is installed at the left end of the base (1), and the output shaft of the motor (2) is connected to the shaft of the calendering roll (4) via a transmission gear (3), wherein there are two calendering rolls (4), and the calendering rolls (4) are rotatably mounted on the inner side of a support (5); characterized in that Also includes: The movable shaft (6) is fixed to the end of the calendering roller (4) away from the transmission gear (3). The movable shaft (6) is driven by meshing with the transmission shaft (8) through the bevel gear set (7). An air suction component is provided on the outside of the transmission shaft (8). The air suction component is connected to the fixed box (16). The fixed box (16) is installed on the side of the calendering roller (4). A cleaning strip (17) is pasted on the upper edge of the fixed box (16).

2. The SMC sheet two-roll calendering device according to claim 1, characterized in that: The air intake assembly includes a movable plate (9) sleeved on the outside of the drive shaft (8), and the outside of the drive shaft (8) is provided with two threaded grooves in opposite directions, and the drive shaft (8) and the movable plate (9) are threadedly connected.

3. The SMC sheet two-roll calendering device according to claim 2, characterized in that: A fixing cylinder (10) is sleeved on the outside of the movable plate (9), and the fixing cylinder (10) is fixed on the bracket (5) at the right end. A fixing block (11) is fixed on the side of the movable plate (9).

4. The SMC sheet two-roll calendering device according to claim 3, characterized in that: A limiting groove (12) is provided in the fixing cylinder (10) outside the fixing block (11), and the edge of the movable plate (9) slides against the inner wall of the fixing cylinder (10), and the fixing block (11) and the limiting groove (12) are slidably connected.

5. The SMC sheet twin-roll calendering apparatus according to claim 3, characterized in that: One side of the fixed cylinder (10) is symmetrically connected to an air outlet pipe (13), and the other side of the fixed cylinder (10) is symmetrically connected to an air inlet pipe (14). Both the air outlet pipe (13) and the air inlet pipe (14) are equipped with one-way valves.

6. The SMC sheet twin-roll calendering apparatus according to claim 5, characterized in that: The end of the air inlet pipe (14) away from the fixed cylinder (10) is fixedly connected to the middle section of the transmission pipe (15), and the two ends of the transmission pipe (15) are fixedly connected to the ends of the two fixed boxes (16). The fixed cylinder (10) is interconnected with the interior of the fixed box (16) through the air inlet pipe (14) and the transmission pipe (15).

7. The SMC sheet twin-roll calendering apparatus according to claim 1, characterized in that: The side of the fixing box (16) near the calendering roller (4) is an arc-shaped structure, and fixing holes (18) are evenly reserved on the arc surface inside the fixing box (16). The cleaning strip (17) is made of sponge material, and the cleaning strip (17) is in close contact with the surface of the calendering roller (4).

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