A bubble-proof PVC sheet calendering equipment

Abstract

The present invention relates to the technical field of PVC sheets, and discloses an anti-bubble PVC sheet calendering device, comprising a calendering assembly, a frame, a roller, a rotating shaft and a driving mechanism, wherein the roller is arranged on the frame. The present invention has the following beneficial effects: the calendering assembly is arranged to calender the PVC sheet, and the bubbles generated on the calendered sheet can be eliminated by the arrangement of a scraper, so that the surface of the sheet can be made smoother and smoother, and the appearance quality of the product can be significantly improved. Moreover, due to the different physical properties, distribution and state of bubbles of PVC sheets of different thicknesses, the scraper can adaptively adjust the height and scraping force according to the different thicknesses of PVC sheets, so as to adapt to the production of sheets of different specifications and thicknesses, thereby improving the versatility and flexibility of the equipment, avoiding the tediousness of frequent manual adjustment of the scraper due to changes in sheet thickness, and improving production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of PVC sheets, in particular to an anti-bubble PVC sheet calendering device. Background Art

[0002] PVC sheet is a flat material made of polyvinyl chloride resin. During the production process of PVC sheet, in order to enhance its physical properties, such as improving strength, toughness and dimensional stability, and to ensure that the thickness of the produced PVC sheet is uniform, it is necessary to use a calender to calender it. During the calendering process of the PVC sheet, if the raw materials contain moisture or volatile components, they will form bubbles when heated to gas during the processing, and the calendering temperature is too high, causing certain components to decompose and produce gas, which will also form bubbles. Most calenders in the prior art are unable to eliminate the bubbles generated on the calendered PVC sheet during use. The bubbles will seriously affect the appearance of the sheet, making it uneven and unsightly, reducing the visual quality of the product. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the above problems and / or the problems existing in the existing bubble-proof PVC sheet calendering equipment, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is that the calendering of the PVC sheet is not aesthetically pleasing.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an anti-bubble PVC sheet calendering device, comprising a calendering assembly, including a frame, a roller, a rotating shaft and a driving mechanism, the roller is arranged on the frame, the rotating shaft is fixed to one side of the roller, and the driving mechanism is located on one side of the frame;

[0007] The defoaming assembly is arranged on the frame, and includes a scraper, a support, a guide, a connecting member and a rotating member. The scraper is located on one side of the roller, the support is arranged on one side of the scraper, the guide is located on one side of the support, the connecting member is arranged on one side of the scraper, and the rotating member is located inside the support.

[0008] As a preferred solution of the anti-bubble PVC sheet calendering equipment of the present invention, there are two scrapers, both of which are inclined, and the initial inclination angle is degrees.

[0009] As a preferred solution of the bubble-proof PVC sheet calendering equipment described in the present invention, the support member includes a fixed plate, a connecting column and a slide rail, the fixed plate is fixed to one side of the scraper, one end of the connecting column is fixed to the fixed plate, and the slide rail is located on one side of the scraper.

[0010] As a preferred solution of the bubble-proof PVC sheet calendering equipment described in the present invention, the support member further includes a connecting sleeve, a fixed rod, a fixed sleeve, a movable rod, a connecting frame and a positioning shaft, the connecting sleeve is rotatably connected to the outside of the rotating shaft, the fixed rod is fixed to the top of the connecting sleeve, the fixed sleeve is located on the outside of the fixed rod, the movable rod is inserted into the fixed sleeve, the connecting frame is fixed to one side of the scraper, one end of the positioning shaft is fixed to the movable rod, and the positioning shaft slides in the connecting frame.

[0011] As a preferred solution of the anti-bubble PVC sheet calendering equipment described in the present invention, the guide member includes a connecting shaft and a first guide rail, the connecting shaft is fixed to one side of the movable rod, the first guide rail is located on one side of the fixed sleeve, the connecting shaft slides in the first guide rail, and the first guide rail is inclined.

[0012] As a preferred solution of the bubble-proof PVC sheet calendering equipment described in the present invention, the guide member also includes a fixed shaft, a second guide rail and a connecting rod, the fixed shaft is fixed to one side of the scraper, the second guide rail is located on one side of the scraper, the two ends of the connecting rod are respectively fixed to the second guide rail and the fixed sleeve, the second guide rail is arc-shaped, and the fixed shaft slides in the second guide rail.

[0013] As a preferred solution of the anti-bubble PVC sheet calendering equipment described in the present invention, the connecting part includes a movable frame, a positioning column, a positioning block, a stabilizing rod and a stabilizing sleeve, the movable frame is located on one side of the scraper, one end of the positioning column is fixed to the scraper, the positioning block is rotatably connected to the outside of the positioning column, the stabilizing rod is fixed to one side of the movable frame, the stabilizing sleeve is located on the outside of the stabilizing rod, and the positioning block slides in the movable frame.

[0014] As a preferred solution of the bubble-proof PVC sheet calendering equipment described in the present invention, the connecting piece also includes a limiting shaft and a spring, a groove is provided on the positioning block, the limiting shaft is located in the groove, the two ends of the spring are respectively fixed to the limiting shaft and the inner wall of the groove, a limiting hole is provided in the movable frame, and the limiting shaft is engaged with the limiting hole.

[0015] As a preferred solution of the bubble-proof PVC sheet calendering equipment described in the present invention, the rotating part includes a fixed column, a gear, a tooth plate, a stabilizing frame and a sliding shaft, the fixed column is fixed in the fixed sleeve, the gear is located outside the fixed column, the tooth plate is arranged on one side of the fixed rod, the stabilizing frame is fixed on one side of the fixed rod, the sliding shaft is fixed in the gear, a spiral groove is opened on the fixed column, and the sliding shaft slides in the spiral groove.

[0016] As a preferred solution of the bubble-proof PVC sheet calendering equipment described in the present invention, the rotating part also includes a third guide rail and a guide column, the third guide rail is located on one side of the tooth plate, one end of the guide column is fixed to the tooth plate, and the guide column slides in the third guide rail.

[0017] The beneficial effects of the present invention are as follows: the calendering component is arranged to calender the PVC sheet; the scraper is arranged to eliminate the bubbles generated on the calendered sheet, thereby making the surface of the sheet smoother and more even, significantly improving the appearance quality of the product; and since the physical properties, distribution and state of bubbles of PVC sheets of different thicknesses are different, the scraper can adaptively adjust the height and scraping force according to the PVC sheets of different thicknesses, thereby adapting to the production of sheets of different specifications and thicknesses, improving the versatility and flexibility of the equipment, avoiding the tediousness of frequent manual adjustment of the scraper due to changes in sheet thickness, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 Overall view of the PVC sheet calendering equipment to prevent bubbles.

[0020] Figure 2 Scraper structure diagram of the PVC sheet calendering equipment to prevent bubbles.

[0021] Figure 3 Partial structure diagram of the scraper of the PVC sheet calendering equipment to prevent bubbles.

[0022] Figure 4 Structural diagram of the degassing component of the anti-bubble PVC sheet calendering equipment.

[0023] Figure 5 A cross-sectional view of the movable frame of the anti-bubble PVC sheet calendering equipment.

[0024] Figure 6 For anti-bubble PVC sheet calendering equipment Figure 5 A partial enlarged structural diagram in the middle.

[0025] Figure 7 Diagram of the fixed rod structure of the PVC sheet calendering equipment to prevent bubbles.

[0026] Figure 8 Cross-sectional view of the fixed rod structure of the anti-bubble PVC sheet calendering equipment.

[0027] Fig. 9 For anti-bubble PVC sheet calendering equipment Figure 8 A partial enlarged structural diagram of point B in the middle.

[0028] Fig.10 Structural diagram of the support and connectors for anti-bubble PVC sheet calendering equipment.

[0029] In the figure: 100, calendering assembly; 200, defoaming assembly; 101, frame; 102, roller; 103, rotating shaft; 104, driving mechanism; 201, scraper; 202, support member; 203, guide member; 204, connecting member; 205, rotating member; 202a, fixed plate; 202b, connecting column; 202c, slide rail; 202e, fixed rod; 202d, connecting sleeve; 202f, fixed sleeve; 202g, movable rod; 202h, connecting frame; 202i, positioning shaft; 203a, connecting shaft; 203b, first guide guide rail; 203c, fixed axis; 203d, second guide rail; 203e, connecting rod; 204a, movable frame; 204b, positioning column; 204c, positioning block; 204d, stabilizing rod; 204e, stabilizing sleeve; 204f, limiting axis; 204g, spring; 204c-1, groove; 204a-1, limiting hole; 205a, fixed column; 205b, gear; 205c, tooth plate; 205d, stabilizing frame; 205e, sliding axis; 205a-1, spiral groove; 205f, third guide rail; 205g, guide column. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Example 1

[0034] Reference Figure 1-Figure 10 , which is the first embodiment of the present invention, and this embodiment provides an anti-bubble PVC sheet calendering device. The anti-bubble PVC sheet calendering device includes a calendering component 100 and a debubble component 200. The debubble component 200 can eliminate bubbles generated on the calendered sheet.

[0035] The calendering assembly 100 includes a frame 101 , a roller 102 , a rotating shaft 103 and a driving mechanism 104 . The roller 102 is disposed on the frame 101 , the rotating shaft 103 is fixed to one side of the roller 102 , and the driving mechanism 104 is located at one side of the frame 101 .

[0036] There are three rollers 102, which is a conventional three-roll calender. The rotating shaft 103 is used to drive the rollers 102 to rotate and drive the upper and lower rollers 102 to move up and down, so that sheets of different thicknesses can be calendered. The driving mechanism 104 is used to drive the rotating shaft 103 and the rollers 102 to rotate. This is the prior art and will not be elaborated in this solution. Those skilled in the art can clearly understand the working principle.

[0037] An adjustment mechanism is provided above the frame 101, which can adjust the positions of the upper and lower rollers 102, so that PVC sheets of different thicknesses can be calendered. This is the prior art and will not be elaborated in detail in this solution.

[0038] The defoaming assembly 200 is arranged on the frame 101, and includes a scraper 201, a support member 202, a guide member 203, a connecting member 204 and a rotating member 205. The scraper 201 is located on one side of the roller 102, the support member 202 is arranged on one side of the scraper 201, the guide member 203 is located on one side of the support member 202, the connecting member 204 is arranged on one side of the scraper 201, and the rotating member 205 is located in the support member 202.

[0039] The scraper 201 is used to scrape off the bubbles on the calendered PVC sheet, so that the surface of the sheet can be made smoother and flatter, and the appearance quality of the product can be significantly improved. A heating plate 201-1 is provided on the side of the scraper 201 opposite to the contact with the PVC sheet. The end of the scraper 201 is heated to a temperature capable of melting the bubbles by the heating plate 201-1. When the scraper 201 scrapes off the bubbles, the bubbles scraped off by the scraper 201 will be melted into a fluid material and attached to one side of the scraper 201. As the PVC sheet moves, the scraper 201 will push the liquid to move on the surface of the PVC sheet.

[0040] When the scraper 201 scrapes away the bubbles on the surface of the PVC sheet, there will be holes or defects at the position where the bubbles are eliminated on the PVC sheet. At this time, the scraper 201 will drive the fluid raw material to contact the holes, and part of the raw material will enter the holes to fill the holes, thereby avoiding further improving the aesthetics of the PVC sheet.

[0041] The support member 202 is used to support and fix the scraper 201, and can also drive the scraper 201 to move, so that the height of the scraper 201 can be adjusted, so that the scraper 201 can scrape bubbles on PVC sheets of different thicknesses. The guide member 203 is used to guide the moving trajectory of the scraper 201 to avoid deviation during movement. The connecting member 204 is used to enable the two scrapers 201 to move simultaneously.

[0042] When a thicker PVC sheet needs to be calendered, the position of the upper roller 102 needs to be raised, and the scraper 201 needs to move upward to a certain height based on the moving height of the roller 102 while following the roller 102 to move upward synchronously, so that the scraper 201 after adjusting the position can be at a suitable distance from the top of the thicker PVC sheet, and will not be too close to the top of the sheet, resulting in excessive force of the scraper 201 on the sheet, causing damage to the sheet. By setting the rotating member 205, the support member 202 can apply an upward force to the scraper 201 again when driving the scraper 201 to move upward, so that the scraper 201 can be at a suitable distance from the top of the thicker PVC sheet.

[0043] Example 2

[0044] Reference Figure 1-Figure 10 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0045] Specifically, there are two scrapers 201 , and both scrapers 201 are inclined, with an initial inclination angle of 30 degrees.

[0046] By setting up two scrapers 201, bubbles generated on the bottom and top of the PVC sheet after calendering can be scraped off at the same time, thereby ensuring that possible bubbles can be effectively removed from both sides of the sheet, ensuring the uniformity of the quality of the entire sheet.

[0047] PVC sheets of different thicknesses may have different physical properties, bubble distribution and state, etc. Thicker sheets may require the scraper 201 to have a relatively large angle to ensure that the scraper 201 can penetrate deeply and effectively scrape away the bubbles, while thinner sheets may require the scraper 201 to have a smaller angle to reduce the scraping force and avoid damage to the sheet.

[0048] By setting the initial inclination angle of the scraper 201 to 30 degrees, bubbles on thinner sheets can be scraped off. As the thickness of the sheet increases, the inclination angle of the scraper 201 will increase synchronously, so that the bubbles can be contacted with appropriate force and direction and scraped off smoothly, which can not only ensure the scraping effect, but also minimize excessive scratching and damage to the sheet surface.

[0049] As the thickness of the plate increases, the height of the upper roller 102 also needs to be raised, and the heights of the two scrapers 201 will rise synchronously with the height of the roller 102. Since the blade of the bottom scraper 201 is flush with the top of the roller 102, the increase in the thickness of the sheet only requires the upper scraper 201 to rise to a certain height based on the height of the roller 102, and the height of the bottom scraper 201 only needs to be consistent with the height of the roller 102.

[0050] Specifically, the support member 202 includes a fixed plate 202a, a connecting column 202b and a slide rail 202c. The fixed plate 202a is fixed to one side of the scraper 201, one end of the connecting column 202b is fixed to the fixed plate 202a, and the slide rail 202c is located at one side of the scraper 201.

[0051] There are two groups of support members 202, which are located on both sides of the two scrapers 201 respectively. In one group of support members 202, there are two fixed plates 202a and two connecting columns 202b, which are fixed on one side of the two scrapers 201 respectively. The upper connecting column 202b is movably connected to the slide rail 202c, and the lower connecting column 202b is rotatably connected to the slide rail 202c. It can only rotate in the slide rail 202c but cannot move up and down in the slide rail 202c. In this way, when the slide rail 202c moves upward, it can drive the lower connecting column 202b to move upward.

[0052] The connection column 202b and the slide rail 202c are used to position the blade of the scraper 201, so that the blade of the scraper 201 can be in the current vertical position during the up and down movement or angle adjustment process, and the scraping of sheets of different thicknesses is at the same position, thereby preventing the scraper 201 from shifting during adjustment, resulting in different scraping positions for sheets of different thicknesses, which will affect the scraping efficiency of the bubbles.

[0053] At the same time, when the scraper 201 is adjusted in angle, the position of the blade edge of the scraper 201 can also be positioned so that only the angle of the blade edge changes without changing the height.

[0054] A stabilizing plate is fixed to one side of the slide rail 202c, and the other side of the stabilizing plate is fixed to the fixing rod 202e, and the stabilizing plate is in a Z shape.

[0055] Specifically, the support member 202 also includes a connecting sleeve 202d, a fixed rod 202e, a fixed sleeve 202f, a movable rod 202g, a connecting frame 202h and a positioning shaft 202i. The connecting sleeve 202d is rotatably connected to the outside of the rotating shaft 103, the fixed rod 202e is fixed to the top of the connecting sleeve 202d, the fixed sleeve 202f is located on the outside of the fixed rod 202e, the movable rod 202g is inserted into the fixed sleeve 202f, the connecting frame 202h is fixed to one side of the scraper 201, one end of the positioning shaft 202i is fixed to the movable rod 202g, and the positioning shaft 202i slides in the connecting frame 202h.

[0056] The fixed sleeve 202f is L-shaped and movably connected to the outer side of the fixed rod 202e. The movable rod 202g is movably connected to the inside of the fixed sleeve 202f. A sliding groove is provided on the connecting frame 202h, and the positioning shaft 202i slides in the sliding groove.

[0057] By cooperating with the connecting frame 202h and the positioning shaft 202i, the movable rod 202g is connected to the scraper 201, so that the movable rod 202g can push the top of the scraper 201 to move when it moves, so as to adjust the angle of the scraper 201 and support the scraper 201 at the same time to avoid changes in its angle and height during use.

[0058] When the roller 102 and the rotating shaft 103 move upward, they will drive the fixed rod 202e and the fixed sleeve 202f to move upward, and drive the movable rod 202g to move upward through the fixed sleeve 202f, so that the movable rod 202g can drive the scraper 201 to move upward and adjust the height of the scraper 201.

[0059] A connecting block is fixed to one side of the connecting sleeve 202d, and an L-shaped positioning rod is fixed to one side of the frame 101. The positioning rod is movably connected to the connecting block, and the connecting sleeve 202d is positioned by the cooperation of the two to prevent it from rotating during movement.

[0060] Specifically, the guide member 203 includes a connecting shaft 203a and a first guide rail 203b. The connecting shaft 203a is fixed to one side of the movable rod 202g. The first guide rail 203b is located on one side of the fixed sleeve 202f. The connecting shaft 203a slides in the first guide rail 203b. The first guide rail 203b is inclined.

[0061] The first guide rail 203b is fixed to one side of the frame 101, and a through groove is provided on the fixed sleeve 202f. The connecting shaft 203a is movably connected with the through groove. When the fixed rod 202e moves upward, it will drive the connecting shaft 203a to move along the inclined angle of the first guide rail 203b. The cooperation of the two drives the fixed rod 202e to translate, so that the top of the scraper 201 can be pushed to move by the fixed rod 202e, thereby adjusting the angle of the scraper 201.

[0062] Specifically, the guide member 203 also includes a fixed shaft 203c, a second guide rail 203d and a connecting rod 203e. The fixed shaft 203c is fixed to one side of the scraper 201, the second guide rail 203d is located on one side of the scraper 201, and both ends of the connecting rod 203e are respectively fixed to the second guide rail 203d and the fixed sleeve 202f. The second guide rail 203d is arc-shaped, and the fixed shaft 203c slides in the second guide rail 203d.

[0063] When the fixed sleeve 202f moves upward, the second guide rail 203d will move upward synchronously through the cooperation of the connecting rod 203e. When the scraper 201 rotates, it will drive the fixed shaft 203c to slide in the second guide rail 203d. The scraper 201 is supported by the cooperation of the two, so that the scraper 201 will only rotate normally and will not move downward, thereby preventing the scraper 201 from tilting downward when rotating and contacting the sheet too much.

[0064] Example 3

[0065] Reference Figure 1-Figure 10 , which is the third embodiment of the present invention, and is based on the first two embodiments.

[0066] Specifically, the connecting member 204 includes a movable frame 204a, a positioning column 204b, a positioning block 204c, a stabilizing rod 204d and a stabilizing sleeve 204e. The movable frame 204a is located on one side of the scraper 201, one end of the positioning column 204b is fixed to the scraper 201, the positioning block 204c is rotatably connected to the outside of the positioning column 204b, the stabilizing rod 204d is fixed to one side of the movable frame 204a, the stabilizing sleeve 204e is located on the outside of the stabilizing rod 204d, and the positioning block 204c slides in the movable frame 204a.

[0067] There are two groups of connecting members 204 , which are respectively located on both sides of the two scrapers 201 . In one group of connecting members 204 , there are two positioning posts 204 b and two positioning blocks 204 c , which are respectively located on one side of the two scrapers 201 .

[0068] When the upper scraper 201 rotates, it will drive the positioning block 204c and the positioning column 204b to move in the movable frame 204a and push the movable frame 204a to translate. When the movable frame 204a translates, it will drive the positioning block 204c and the positioning column 204b below to move. At this time, the positioning block 204c and the positioning column 204b below can drive the scraper 201 below to rotate, so that the two scrapers 201 can be adjusted synchronously in angle.

[0069] The stabilizing rod 204d is movably connected to the stabilizing sleeve 204e, and the stabilizing sleeve 204e is fixed to the stabilizing plate through a mounting block. The stabilizing rod 204d and the stabilizing sleeve 204e cooperate to support and position the movable frame 204a to prevent it from deflecting during translation.

[0070] Specifically, the connecting member 204 also includes a limiting shaft 204f and a spring 204g. A groove 204c-1 is provided on the positioning block 204c. The limiting shaft 204f is located in the groove 204c-1. Both ends of the spring 204g are respectively fixed to the limiting shaft 204f and the inner wall of the groove 204c-1. A limiting hole 204a-1 is provided in the movable frame 204a, and the limiting shaft 204f is engaged with the limiting hole 204a-1.

[0071] The setting of the limiting shaft 204f and the spring 204g is only present inside the lower positioning block 204c. The limiting shaft 204f cooperates with the limiting hole 204a-1 to lock the lower positioning block 204c to prevent the positioning block 204c from moving downward in the movable frame 204a, thereby causing the angle of the scraper 201 to change. The spring 204g applies a thrust to the limiting shaft 204f, so that the limiting shaft 204f and the limiting hole 204a-1 can be more tightly engaged.

[0072] The end of the limiting shaft 204f is arc-shaped. When the movable frame 204a moves, a friction force greater than that between the end of the limiting shaft 204f and the inside of the limiting hole 204a-1 is generated. At this time, the limiting shaft 204f will be separated from the current limiting hole 204a-1, so that the positioning block 204c can move in the movable frame 204a and the scraper 201 below can rotate.

[0073] There are multiple limiting holes 204a-1, which are evenly distributed in a straight line inside the movable frame 204a. Through the arrangement of multiple limiting holes 204a-1, the scraper 201 below can be locked at different angles.

[0074] Specifically, the rotating member 205 includes a fixed column 205a, a gear 205b, a tooth plate 205c, a stabilizing frame 205d and a sliding shaft 205e. The fixed column 205a is fixed in the fixed sleeve 202f, the gear 205b is located outside the fixed column 205a, the tooth plate 205c is arranged on one side of the fixed rod 202e, the stabilizing frame 205d is fixed on one side of the fixed rod 202e, the sliding shaft 205e is fixed in the gear 205b, and a spiral groove 205a-1 is opened on the fixed column 205a, and the sliding shaft 205e slides in the spiral groove 205a-1.

[0075] The tooth plate 205c is meshed with the gear 205b, a positioning groove is provided on the fixing rod 202e, the gear 205b is rotationally connected to the positioning groove, and the tooth plate 205c is movably connected to the stabilizing frame 205d, so as to support and position the tooth plate 205c.

[0076] When the fixed rod 202e moves upward, the toothed plate 205c will translate and drive the gear 205b to rotate. The gear 205b drives the sliding shaft 205e to slide in the spiral groove 205a-1. The two cooperate to drive the fixed column 205a to move upward, and the fixed sleeve 202f is driven upward by the fixed column 205a. In this way, on the basis of the fixed rod 202e driving the fixed sleeve 202f to move upward, the fixed sleeve 202f will automatically move upward to a certain height again, and drive the scraper 201 above to move upward to a specified height, so that the scraper 201 after adjusting the position can be at a suitable distance from the top of the thicker PVC sheet, and will not be too close to the top of the sheet, resulting in excessive force of the scraper 201 on the sheet, causing the sheet to be damaged.

[0077] Specifically, the rotating member 205 further includes a third guide rail 205f and a guide column 205g. The third guide rail 205f is located at one side of the tooth plate 205c. One end of the guide column 205g is fixed to the tooth plate 205c. The guide column 205g slides in the third guide rail 205f.

[0078] The third guide rail 205f is fixed to one side of the frame 101. When the tooth plate 205c moves upward, it will drive the guide column 205g to move along the inclination angle of the third guide rail 205f. Through the cooperation of the two, the tooth plate 205c can be translated, so that the gear 205b can be driven to rotate through the tooth plate 205c.

[0079] During use, when the calendered PVC sheet moves outward, the bubbles generated at the bottom and top of the calendered PVC sheet are scraped off by two scrapers 201, so that the surface of the sheet can be made smoother and flatter, and the appearance quality of the product can be significantly improved. At the same time, possible bubbles can be effectively removed from both sides of the sheet to ensure the uniformity of the quality of the entire sheet.

[0080] When thicker PVC sheets need to be calendered, the position of the upper roller 102 needs to be raised. When the roller 102 and the rotating shaft 103 move upward, the fixed rod 202e and the fixed sleeve 202f are driven to move upward, and the movable rod 202g is driven to move upward through the fixed sleeve 202f, so that the movable rod 202g can drive the scraper 201 to move upward and adjust the height of the scraper 201. When the fixed rod 202e moves upward, it drives the connecting shaft 203a to move along the inclined angle of the first guide rail 203b. The cooperation of the two drives the fixed rod 202e to translate, so that the top of the scraper 201 can be pushed to move through the fixed rod 202e, thereby adjusting the angle of the scraper 201.

[0081] When the scraper 201 rotates, it will drive the fixed shaft 203c to slide in the second guide rail 203d. The scraper 201 is supported by the cooperation of the two, so that the scraper 201 can only rotate normally and will not move downward, thereby preventing the scraper 201 from tilting downward when rotating and contacting the sheet too much.

[0082] When the upper scraper 201 rotates, it will drive the positioning block 204c and the positioning column 204b to move in the movable frame 204a and push the movable frame 204a to translate. When the movable frame 204a translates, it will drive the positioning block 204c and the positioning column 204b below to move. At this time, the positioning block 204c and the positioning column 204b below can drive the scraper 201 below to rotate, so that the two scrapers 201 can be adjusted synchronously in angle.

[0083] When the fixed rod 202e moves upward, it will drive the guide column 205g to move along the inclination angle of the third guide rail 205f. Through the cooperation of the two, the toothed plate 205c can be translated and the gear 205b can be driven to rotate. The gear 205b drives the sliding shaft 205e to slide in the spiral groove 205a-1. Through the cooperation of the two, the fixed column 205a is driven to move upward, and the fixed sleeve 202f is driven upward by the fixed column 205a. In this way, on the basis of the fixed rod 202e driving the fixed sleeve 202f to move upward, the fixed sleeve 202f will automatically move upward to a certain height again, and drive the upper scraper 201 to move upward to a specified height, so that the scraper 201 after adjusting the position can be at a suitable distance from the top of the thicker PVC sheet, and will not be too close to the top of the sheet, resulting in excessive force of the scraper 201 on the sheet, causing the sheet to be damaged.

[0084] By raising the height of the scraper 201, it can scrape the bubbles in PVC sheets of different thicknesses. At the same time, the inclination angle of the scraper 201 is increased so that it can contact the bubbles with appropriate force and direction and scrape them off smoothly, which can not only ensure the scraping effect but also minimize excessive scratching and damage to the surface of the sheet.

[0085] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An anti-bubble PVC sheet calendering device, characterized in that: include, A calendering assembly (100) comprises a frame (101), a roller (102), a rotating shaft (103), and a driving mechanism (104), wherein the roller (102) is arranged on the frame (101), the rotating shaft (103) is fixed to one side of the roller (102), and the driving mechanism (104) is located on one side of the frame (101); A defoaming component (200) is arranged on the frame (101), comprising a scraper (201), a support member (202), a guide member (203), a connecting member (204) and a rotating member (205), wherein the scraper (201) is located on one side of the roller (102), the support member (202) is arranged on one side of the scraper (201), the guide member (203) is located on one side of the support member (202), the connecting member (204) is arranged on one side of the scraper (201), and the rotating member (205) is located inside the support member (202); The support member (202) comprises a fixing plate (202a), a connecting column (202b) and a slide rail (202c), wherein the fixing plate (202a) is fixed to one side of the scraper (201), one end of the connecting column (202b) is fixed to the fixing plate (202a), and the slide rail (202c) is located on one side of the scraper (201); The support member (202) further comprises a connecting sleeve (202d), a fixed rod (202e), a fixed sleeve (202f), a movable rod (202g), a connecting frame (202h) and a positioning shaft (202i); the connecting sleeve (202d) is rotatably connected to the outside of the rotating shaft (103); the fixed rod (202e) is fixed to the top of the connecting sleeve (202d); the fixed sleeve (202f) is located on the outside of the fixed rod (202e); the movable rod (202g) is inserted into the fixed sleeve (202f); the connecting frame (202h) is fixed to one side of the scraper (201); one end of the positioning shaft (202i) is fixed to the movable rod (202g); and the positioning shaft (202i) slides in the connecting frame (202h); The guide member (203) comprises a connecting shaft (203a) and a first guide rail (203b), the connecting shaft (203a) being fixed to one side of the movable rod (202g), the first guide rail (203b) being located on one side of the fixed sleeve (202f), the connecting shaft (203a) sliding in the first guide rail (203b), and the first guide rail (203b) being inclined; The connecting member (204) comprises a movable frame (204a), a positioning column (204b), a positioning block (204c), a stabilizing rod (204d) and a stabilizing sleeve (204e); the movable frame (204a) is located on one side of the scraper (201); one end of the positioning column (204b) is fixed to the scraper (201); the positioning block (204c) is rotatably connected to the outside of the positioning column (204b); the stabilizing rod (204d) is fixed to one side of the movable frame (204a); the stabilizing sleeve (204e) is located on the outside of the stabilizing rod (204d); and the positioning block (204c) slides in the movable frame (204a); The rotating member (205) comprises a fixed column (205a), a gear (205b), a toothed plate (205c), a stabilizing frame (205d) and a sliding shaft (205e); the fixed column (205a) is fixed in the fixed sleeve (202f); the gear (205b) is located outside the fixed column (205a); the toothed plate (205c) is arranged on one side of the fixed rod (202e); the stabilizing frame (205d) is fixed on one side of the fixed rod (202e); the sliding shaft (205e) is fixed in the gear (205b); a spiral groove (205a-1) is provided on the fixed column (205a); and the sliding shaft (205e) slides in the spiral groove (205a-1).

2. The anti-bubble PVC sheet calendering device according to claim 1, characterized in that: There are two scrapers (201), and both scrapers (201) are inclined, with an initial inclination angle of 30 degrees.

3. The anti-bubble PVC sheet calendering device according to claim 2, characterized in that: The guide member (203) further comprises a fixed shaft (203c), a second guide rail (203d) and a connecting rod (203e); the fixed shaft (203c) is fixed to one side of the scraper (201); the second guide rail (203d) is located on one side of the scraper (201); two ends of the connecting rod (203e) are respectively fixed to the second guide rail (203d) and the fixed sleeve (202f); the second guide rail (203d) is arc-shaped; and the fixed shaft (203c) slides in the second guide rail (203d).

4. The anti-bubble PVC sheet calendering device according to claim 3, characterized in that: The connecting member (204) further comprises a limiting shaft (204f) and a spring (204g); a groove (204c-1) is provided on the positioning block (204c); the limiting shaft (204f) is located in the groove (204c-1); two ends of the spring (204g) are respectively fixed to the limiting shaft (204f) and the inner wall of the groove (204c-1); a limiting hole (204a-1) is provided in the movable frame (204a); and the limiting shaft (204f) is engaged with the limiting hole (204a-1).

5. The anti-bubble PVC sheet calendering device according to claim 4, characterized in that: The rotating member (205) further comprises a third guide rail (205f) and a guide column (205g); the third guide rail (205f) is located on one side of the tooth plate (205c); one end of the guide column (205g) is fixed to the tooth plate (205c); and the guide column (205g) slides in the third guide rail (205f).

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