CN112140418A

CN112140418A - Cooling device is used in production of PVDC hard piece

Info

Publication number: CN112140418A
Application number: CN202010933119.XA
Authority: CN
Inventors: 张友辉; 罗雨之; 杨安顺; 饶卫平; 吴幸溶
Original assignee: Jiangxi Chunguang New Material Technology Co ltd
Current assignee: Jiangxi Chunguang New Material Technology Co ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2020-12-29

Abstract

The invention is suitable for the technical field of production equipment, and particularly relates to a cooling device for PVDC hard sheet production. According to the cooling device for PVDC hard sheet production, provided by the embodiment of the invention, the PVDC hard sheet is guided in through the guide assembly, then the PVDC hard sheet is conveyed through the upper conveying belt and the lower conveying belt, and finally the cooled PVDC hard sheet is wound up through the winding assembly; during the conveying process, the PVDC rigid sheet is cooled on both sides by the upper cooling roller and the lower cooling roller. The cooling device is simple in structure and reasonable in design, can effectively improve the cooling speed and the cooling effect, and avoids the condition of low yield caused by poor cooling effect.

Description

Cooling device is used in production of PVDC hard piece

Technical Field

The invention belongs to the technical field of production equipment, and particularly relates to a cooling device for PVDC hard sheet production.

Background

The PVDC is a copolymer taking the vinylidene chloride as a main component, and because pure PVDC is difficult to process and apply, a homopolymer cannot be industrialized all the time, the VDC-VC copolymer is successfully developed in the last 30 th century by the DOW chemistry in America, and is named as SARAN and the VDC-MA series is also developed in the 80 th era, so the PVDC industry also refers to the copolymerized polymer industry taking the VDC as a main body.

In the PVDC hard sheet production equipment, the hard sheet needs to be cooled after drying, and the existing cooling method is generally to bypass the hard sheet around a cooling roller. Since the contact time between the cooling roll and the hard sheet is short and one-sided cooling is performed, the cooling effect is not good.

Disclosure of Invention

The embodiment of the invention aims to provide a cooling device for PVDC hard sheet production, and aims to solve the problems of short contact time and poor cooling effect between a cooling roller and a hard sheet in the conventional cooling device.

The embodiment of the invention is realized in such a way that the cooling device for PVDC hard sheet production comprises a cooling circulation device, and further comprises a box body, a guide component, a winding component, an upper conveying belt and a lower conveying belt, wherein the guide component and the winding component are respectively arranged at two ends of an inner cavity of the box body, a pair of upper roller shafts and a pair of lower roller shafts are arranged at positions, between the guide component and the winding component, of the inner cavity of the box body, the upper conveying belt is arranged at the periphery of the upper roller shafts, the lower conveying belt is arranged at the periphery of the lower roller shafts, a fixing plate is fixedly arranged at a position, inside the upper conveying belt, of the box body, the cooling circulation device is fixed at the upper end of the fixing plate, a plurality of upper cooling rollers are arranged at the lower end of the fixing plate, the upper cooling rollers are arranged in parallel and connected in series through bent, the lower end of the upper cooling roller is abutted against the inner diameter of the upper conveying belt; the box is located inside fixed plate that is provided with of lower conveyer belt, and the fixed plate upper end is provided with the cooler bin, and the cooler bin internal rotation is provided with a plurality of cooling rollers down, and lower cooling roller upper end offsets with conveyer belt internal diameter down, and the both ends of cooler bin all are connected with cooling cycle device through the pipeline, go up the roller and pass through conveyer belt motor drive with lower roller.

Preferably, the guide assembly comprises a front guide wheel and a rear guide wheel, a sliding groove is formed in the inner wall of the box body, two ends of the rear guide wheel are connected with the sliding groove in a sliding mode, an electric push rod is fixed on the inner wall of the box body, and the end portion of the electric push rod is connected with the rear guide wheel.

Preferably, the rolling subassembly includes hollow roller and drive roller, and the both ends of hollow roller are connected with the inner wall rotation of box, and the internal diameter equipartition of hollow roller has a plurality of rotation dogs, rotates the dog and is connected with hollow roller internal diameter rotation, rotates and is provided with the spring between dog and the hollow roller internal diameter, and the external diameter equipartition of drive roller has a plurality of fixed dogs, and the drive roller passes through the driving of rolling motor.

Preferably, one side of the rotating block, which is close to the fixed block, is provided with a guide fillet.

Preferably, the upper end of the box body is provided with a display screen and a key.

Preferably, the box outer wall is located the position of last conveyer belt and lower conveyer belt both sides and all is provided with the observation window.

Preferably, go up the cooling roller and include the roll body, rotate connecting seat and cooling coil, the cooling coil embedding sets up in the roll body, and both ends are connected with the rotation connecting seat respectively.

According to the cooling device for PVDC hard sheet production, provided by the embodiment of the invention, the PVDC hard sheet is guided in through the guide assembly, then the PVDC hard sheet is conveyed through the upper conveying belt and the lower conveying belt, and finally the cooled PVDC hard sheet is wound up through the winding assembly; during the conveying process, the PVDC rigid sheet is cooled on both sides by the upper cooling roller and the lower cooling roller. The cooling device is simple in structure and reasonable in design, can effectively improve the cooling speed and the cooling effect, and avoids the condition of low yield caused by poor cooling effect.

Drawings

Fig. 1 is a schematic structural diagram of a cooling device for PVDC hard sheet production according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic structural diagram of an upper cooling roller according to an embodiment of the present invention;

fig. 4 is a three-dimensional schematic diagram of a box provided in an embodiment of the present invention.

In the drawings: 1. a box body; 2. a front guide wheel; 3. a rear guide wheel; 4. a chute; 5. an electric push rod; 6. an upper roll shaft; 7. a lower roll shaft; 8. a conveyor belt; 9. a lower conveyor belt; 10. an upper cooling roll; 11. bending the pipe; 12. a cooling circulation device; 13. a fixing plate; 14. a distance sensor; 15. a winding component; 16. a lower cooling roll; 17. a cooling tank; 18. a rear squeegee; 19. a hollow roll; 20. rotating the stop block; 21. a spring; 22. a drive roller; 23. fixing a stop block; 24. a roller body; 25. a cooling coil; 26. rotating the connecting seat; 27. pressing a key; 28. a display screen; 29. an observation window; 30. a conveyor belt motor; 31. a winding motor.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Specific implementations of the present invention are described in detail below with reference to specific embodiments.

As shown in fig. 1, 2, 3 and 4, the cooling device for PVDC hard sheet production according to the embodiment of the present invention includes a cooling circulation device 12, and further includes a box 1, a guide assembly, a winding assembly 15, an upper conveyor 8 and a lower conveyor 9, the guide assembly and the winding assembly 15 are respectively disposed at two ends of an inner cavity of the box 1, a pair of upper roller shafts 6 and a pair of lower roller shafts 7 are disposed in a position between the guide assembly and the winding assembly 15 in the inner cavity of the box 1, the upper conveyor 8 is disposed at a periphery of the upper roller shafts 6, the lower conveyor 9 is disposed at a periphery of the lower roller shafts 7, a fixing plate 13 is fixedly disposed at a position in the upper conveyor 8 of the box 1, the cooling circulation device 12 is fixed at an upper end of the fixing plate 13, a plurality of upper cooling rollers 10 are disposed at a lower end of the fixing plate 13, the upper cooling rollers 10 are disposed in parallel and connected in series, the upper cooling rollers 10 positioned at the two ends are connected with a cooling circulation device 12, the bent pipe 11 is fixedly connected with a fixed plate 13, and the lower ends of the upper cooling rollers 10 are abutted against the inner diameter of the upper conveying belt 8; the box 1 is located inside fixed plate 13 that is provided with also of the position of conveyer belt 9 down, and fixed plate 13 upper end is provided with cooler bin 17, and the cooler bin 17 internal rotation is provided with a plurality of cooling rollers 16 down, and lower cooling roller 16 upper end offsets with conveyer belt 9 internal diameter down, and cooler bin 17's both ends are all connected with cooling cycle device 12 through the pipeline, goes up roller 6 and lower roller 7 and passes through conveyer belt motor 30 drive.

In one embodiment of the present invention, when in use, the PVDC hard sheets enter the guiding assembly, then enter between the upper conveyor belt 8 and the lower conveyor belt 9, and are finally wound up by the winding assembly 15, after the dried PVDC hard sheets have a high temperature and enter between the upper conveyor belt 8 and the lower conveyor belt 9, the circulating cooling device 12 drives the cooling liquid to circulate in the upper cooling roller 10, and a liquid outlet is formed at a side of the circulating cooling device 12 close to the winding assembly 15, so that the flow direction of the cooling liquid is opposite to the moving direction of the PVDC hard sheets, and similarly, the flow direction of the cooling liquid in the cooling box 17 is also opposite to the moving direction of the PVDC hard sheets, which ensures that the cooling speed of the PVDC hard sheets close to the winding assembly 15 is higher than that of the PVDC hard sheets far from the winding assembly 15, so that for the PVDC hard sheets, the PVDC hard sheets must first pass through the low-speed cooling zone and then pass through the high-speed cooling zone, thereby avoiding local deformation caused by temperature shock and ensuring the quality of the PVDC hard sheet; with the lower cooling roller 16, the cooling liquid lowers the temperature of the lower cooling roller 16, and the upper end of the lower cooling roller 16 abuts against the lower conveyor belt 9, thereby taking away heat from the PVDC hard sheets through the lower conveyor belt 9.

In one example of the present invention, a rear scraper 18 is provided in the cooling tank 17 on a side close to the winding member 15, and the cooling liquid attached to the lower conveyor belt 9 is scraped off by the rear scraper 18; a distance sensor 14 is arranged between the upper roller shaft 6 and the lower roller shaft 7 and is used for monitoring the distance between the upper conveying belt 8 and the lower conveying belt 9.

As shown in fig. 1, 2 and 3, as a preferred embodiment of the present invention, the guide assembly includes a front guide wheel 2 and a rear guide wheel 3, a sliding groove 4 is formed in an inner wall of the box body 1, two ends of the rear guide wheel 3 are slidably connected to the sliding groove 4, an electric push rod 5 is fixed on the inner wall of the box body 1, and an end of the electric push rod 5 is connected to the rear guide wheel 3.

In one embodiment of the present invention, the dried PVDC rigid sheet firstly bypasses the front guide wheel 2, then bypasses the rear guide wheel 3, and then enters between the upper conveyor belt 8 and the lower conveyor belt 9, and the PVDC rigid sheet needs to be tensioned according to the processing requirement, so as to ensure the smoothness of the PVDC rigid sheet; when the tightness is adjusted, the electric push rod 5 is started to push the rear guide wheel 3 to move up and down, so that the length of the PVDC hard sheet between the front guide wheel 2 and the upper conveying belt 8 is changed.

As shown in fig. 1, 2 and 3, as a preferred embodiment of the present invention, the winding assembly 15 includes a hollow roller 19 and a driving roller 22, two ends of the hollow roller 19 are rotatably connected to the inner wall of the housing 1, a plurality of rotation stoppers 20 are uniformly distributed on the inner diameter of the hollow roller 19, the rotation stoppers 20 are rotatably connected to the inner diameter of the hollow roller 19, a spring 21 is disposed between the rotation stoppers 20 and the inner diameter of the hollow roller 19, a plurality of fixed stoppers 23 are uniformly distributed on the outer diameter of the driving roller 22, and the driving roller 22 is driven by a winding motor 31.

As shown in fig. 1, 2 and 3, as a preferred embodiment of the present invention, the sides of the rotation stopper 20 and the fixed stopper 23 adjacent to each other are provided with guide rounded corners.

In one embodiment of the present invention, in order to improve the stability of the present invention, a winding assembly 15 is provided, and a winding motor 31 drives a driving roller 22 to rotate, so that a fixed stop piece 23 on the outer diameter of the driving roller 22 abuts against a rotating stop block 20 on the inner diameter of a hollow roller 19, the hollow roller 19 rotates along with the rotation, and the PVDC hard sheet is wound in; when the tension of the equipment appeared card ton or the PVDC hard piece was too big, if hollow roller 19 still kept former speed rotation, the condition that will lead to the hard piece of PVDC to appear breaking, owing to set up spring 21 this moment, can be when tension is too big, through fixed dog 23 extrusion rotation dog 20, spring 21 contracts, fixed dog 23 will be followed rotation dog 20 outer fringe and slided, hollow roller 19 will not continue to rotate, when tension returns normally, spring 21 will recover, hollow roller 19 will continue to work.

As shown in fig. 4, as a preferred embodiment of the present invention, a display 28 and keys 27 are disposed on the upper end of the box 1.

As shown in fig. 4, as a preferred embodiment of the present invention, the outer wall of the box body 1 is provided with observation windows 29 at both sides of the upper conveyor belt 8 and the lower conveyor belt 9.

In one embodiment of the present invention, the display 28 is used to show current settings such as cooling temperature, rotational speed, etc.

As shown in fig. 1, as a preferred embodiment of the present invention, the upper cooling roller 10 includes a roller body 24, a rotary connecting seat 26, and a cooling coil 25, wherein the cooling coil 25 is embedded in the roller body 24, and both ends of the cooling coil are respectively connected to the rotary connecting seat 26.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A cooling device for PVDC hard sheet production comprises a cooling circulation device (12) and is characterized in that the cooling device for PVDC hard sheet production further comprises a box body (1), a guide component, a winding component (15), an upper conveying belt (8) and a lower conveying belt (9), the guide component and the winding component (15) are respectively arranged at two ends of an inner cavity of the box body (1), a pair of upper roller shafts (6) and a pair of lower roller shafts (7) are arranged at positions, located between the guide component and the winding component (15), of the inner cavity of the box body (1), the upper conveying belt (8) is arranged on the periphery of the upper roller shafts (6), the lower conveying belt (9) is arranged on the periphery of the lower roller shafts (7), a fixing plate (13) is fixedly arranged at a position, located inside the upper conveying belt (8), of the box body (1), the cooling circulation device (12) is fixed at the upper end of the fixing plate (13), a plurality of upper, the upper cooling rollers (10) are arranged in parallel and are connected in series through bent pipes (11), the upper cooling rollers (10) positioned at two ends are connected with a cooling circulation device (12), the bent pipes (11) are fixedly connected with a fixed plate (13), and the lower ends of the upper cooling rollers (10) are abutted against the inner diameter of the upper conveying belt (8); the box (1) is located the inside position of conveyer belt (9) down and also fixedly is provided with fixed plate (13), and fixed plate (13) upper end is provided with cooler bin (17), and the internal rotation of cooler bin (17) is provided with a plurality of cooling rollers (16) down, and lower cooling roller (16) upper end offsets with conveyer belt (9) internal diameter down, and the both ends of cooler bin (17) all are connected with cooling cycle device (12) through the pipeline, go up roller (6) and pass through conveyer belt motor (30) drive with lower roller (7).

2. The cooling device for PVDC hard sheet production as claimed in claim 1, wherein the guide assembly comprises a front guide wheel (2) and a rear guide wheel (3), a sliding groove (4) is formed in the inner wall of the box body (1), two ends of the rear guide wheel (3) are slidably connected with the sliding groove (4), an electric push rod (5) is fixed on the inner wall of the box body (1), and the end of the electric push rod (5) is connected with the rear guide wheel (3).

3. The cooling device for PVDC hard sheet production according to claim 1, wherein the winding component (15) comprises a hollow roller (19) and a driving roller (22), two ends of the hollow roller (19) are rotatably connected with the inner wall of the box body (1), a plurality of rotating stoppers (20) are uniformly distributed on the inner diameter of the hollow roller (19), the rotating stoppers (20) are rotatably connected with the inner diameter of the hollow roller (19), a spring (21) is arranged between the rotating stoppers (20) and the inner diameter of the hollow roller (19), a plurality of fixed stoppers (23) are uniformly distributed on the outer diameter of the driving roller (22), and the driving roller (22) is driven by a winding motor (31).

4. The cooling device for PVDC hard sheet production according to claim 3, wherein the side of the rotating block (20) close to the fixed block (23) is provided with a guiding round angle.

5. The cooling device for PVDC hard sheet production according to any one of claims 1 to 4, wherein a display screen (28) and a key (27) are arranged at the upper end of the box body (1).

6. The cooling device for PVDC hard sheet production according to claim 5, wherein the outer wall of the box body (1) is provided with observation windows (29) at the positions on both sides of the upper conveyor belt (8) and the lower conveyor belt (9).

7. The cooling device for PVDC hard sheet production according to claim 1, wherein the upper cooling roller (10) comprises a roller body (24), a rotary connecting seat (26) and a cooling coil (25), the cooling coil (25) is embedded in the roller body (24), and two ends of the cooling coil are respectively connected with the rotary connecting seat (26).