PVC coiled material winding device and production process thereof

Abstract

The invention belongs to the technical field of plate winding, and particularly relates to a device for controlling contact pressure during plate winding, in particular to a PVC (polyvinyl chloride) coiled material winding device and a production process thereof. The conveying rollers are arranged on the bracket body; the winding roller is arranged on the bracket body; the compression roller mechanism is used for compressing the PVC plate wound by the winding roller; the infrared detection module is used for detecting the rising distance of the winding roller; the control module adjusts the height of the pressing roller mechanism according to the received ascending distance so as to adjust the friction force borne by the PVC plate wound by the winding roller. The rising distance of the winding roller is detected, and the height of the pressing roller mechanism is adjusted according to the rising distance, so that the friction force borne by the PVC plate wound by the winding roller is adjusted, the friction force between the pressing roller mechanism and the PVC plate is kept within the preset range, the situation that the local temperature of the PVC plate is too high due to the friction force is avoided, and the quality of the PVC plate cannot be affected.

Description

Technical Field

[0001] The invention belongs to the technical field of sheet material winding, and specifically relates to a device for controlling contact pressure when a sheet material is wound, and more particularly to a PVC coil winding device and a production process thereof. Background Art

[0002] As one of the commonly used materials for flooring, PVC coil is often circulated in the form of coils during production.

[0003] In the related art, since the texture of the PVC coil used as flooring is relatively hard, when rolling up, the rolled PVC coil is not tightly wound if the tension of the PVC board is adjusted alone. For this reason, a pressure roller needs to be set to synchronously press the rolled PVC coil to ensure that the PVC coil is rolled up tightly. During use, it was found that as the rolled thickness of the PVC board increases, the local temperature of the PVC coil overheats, affecting the performance of the PVC coil (such as coating melting, etc.). The rolling speed needs to be reduced to avoid the local temperature overheating of the PVC coil, but reducing the rolling speed will lead to a decrease in the rolling efficiency of the PVC coil.

[0004] Therefore, how to ensure the winding efficiency of the PVC coil while avoiding local overheating of the PVC coil is a technical problem that needs to be solved urgently.

[0005] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0006] The embodiments of the present disclosure at least provide a PVC coil winding device and a production process thereof.

[0007] In a first aspect, an embodiment of the present disclosure provides a PVC coil winding device, comprising:

[0008] The bracket body;

[0009] A conveying roller, which is arranged on the support body;

[0010] A winding roller, which is arranged on the support body;

[0011] A pressing roller mechanism, which is arranged above the winding roller and is used to press the PVC board rolled up by the winding roller;

[0012] An infrared detection module, which is arranged on the support body and is used to detect the rising distance of the winding roller;

[0013] The control module is configured to adjust the height of the pressing roller mechanism according to the received rising distance, so as to adjust the friction force on the PVC board rolled up by the winding roller.

[0014] In an optional embodiment, the pressing roller mechanism includes:

[0015] Two adjusting cylinders, which are fixedly arranged on both sides of the bracket body and located above the winding roller;

[0016] A pressure rod, both ends of which are elastically connected to the piston rod of the regulating cylinder through elastic members;

[0017] The pressure rod is sleeved with a plurality of pressure wheels, and the pressure wheels abut against the outer wall of the PVC board rolled up by the winding roller;

[0018] The control module adjusts the height of the pressing roller mechanism according to the received rising distance, that is, adjusts the extension distance of the piston rod of the regulating cylinder according to the received rising distance.

[0019] In an optional embodiment, the rising distance of the winding roller is L, and the extension distance of the piston rod of the regulating cylinder is H; wherein H=αL;

[0020] Where α is the distance adjustment coefficient, its value is 1.5-1.95, and the units of H and L are cm.

[0021] In an optional embodiment, the pressing roller mechanism further includes:

[0022] A back plate, which is vertically arranged on the bracket body and has a plurality of sliding grooves spaced apart therefrom;

[0023] The pressing wheel is sleeved on the pressing rod through a sliding tube;

[0024] The side wall of the sliding tube is provided with a sliding rod inserted into the sliding groove;

[0025] The pressing wheel rises as the thickness of the PVC board rolled up by the winding roller increases, thereby driving the sliding rod to slide along the sliding groove, thereby adjusting the abutting position between the pressing wheel and the PVC board rolled up by the winding roller.

[0026] In an optional embodiment, the sliding groove is obliquely arranged on the back plate to drive the sliding tube to slide axially along the pressure rod when the pressure wheel rises, thereby adjusting the abutment position between the pressure wheel and the PVC board rolled up by the winding roller.

[0027] In an optional embodiment, the sliding groove includes a plurality of vertical segments spaced apart from bottom to top, and an inclined segment connecting adjacent vertical segments;

[0028] The inclined directions of the inclined sections in each sliding groove are consistent.

[0029] In an optional embodiment, the opening direction of the sliding grooves at the two ends of the plurality of sliding grooves is inclined outward from bottom to top;

[0030] The pressure wheel rises as the thickness of the PVC board rolled up by the winding roller increases, thereby driving the sliding rod to slide along the sliding groove, so that the two pressure wheels corresponding to the sliding grooves at both ends of the plurality of sliding grooves slide outward along the axial direction of the pressure rod.

[0031] In an optional embodiment, the elastic member includes:

[0032] A lifting plate, which is arranged on the piston rod of the regulating cylinder;

[0033] A sleeve fixedly arranged on the lifting plate;

[0034] A telescopic rod, one end of which is arranged toward the winding roller and elastically connected to the sleeve via a return spring, and the other end of the telescopic rod passes through the sleeve;

[0035] The telescopic rod is also provided with a through hole for the pressure rod to pass through;

[0036] The compression rod is fixedly connected to the telescopic rod after passing through the through hole.

[0037] In a second aspect, the embodiment of the present disclosure further provides a production process for the PVC coil winding device as described above, the process comprising:

[0038] Fix the reeling end of the PVC board to be reeled on the reeling drum;

[0039] After the take-up drum is sleeved on the take-up roller, the take-up roller is inserted into the bracket body;

[0040] Control the conveying roller to start rotating, thereby driving the reel to rotate, and then reeling the PVC board;

[0041] When winding, the rising distance of the winding roller is detected, and the height of the pressing roller mechanism is adjusted according to the received rising distance to adjust the friction force on the PVC board wound by the winding roller.

[0042] In an optional embodiment, the pressing roller mechanism includes:

[0043] Two adjusting cylinders, which are fixedly arranged on both sides of the bracket body and located above the winding roller;

[0044] A pressure rod, both ends of which are elastically connected to the piston rod of the regulating cylinder through elastic members;

[0045] The pressure rod is sleeved with a plurality of pressure wheels, and the pressure wheels abut against the outer wall of the PVC board rolled up by the winding roller;

[0046] The height of the pressing roller mechanism is adjusted according to the received rising distance, that is, the extension distance of the piston rod of the adjusting cylinder is adjusted according to the received rising distance.

[0047] The beneficial effect of the present invention is that the PVC coil winding device and its production process detect the rising distance of the winding roller and adjust the height of the pressure roller mechanism according to the rising distance, thereby adjusting the friction force on the PVC board wound by the winding roller, and then maintaining the friction force between the pressure roller mechanism and the PVC board within a preset range, avoiding the local temperature of the PVC board being too high due to the friction, thereby not affecting the quality of the PVC board.

[0048] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0049] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 A schematic diagram of the structure of a PVC coiled material winding device provided in an embodiment of the present disclosure;

[0052] Figure 2 The electrical control principle diagram of the PVC coil winding device provided in the embodiment of the present disclosure;

[0053] Figure 3 A cross-sectional view of a PVC coil winding device provided in an embodiment of the present disclosure;

[0054] Figure 4 A front view of a PVC coiled material winding device provided in an embodiment of the present disclosure;

[0055] Figure 5 for Figure 4 The enlarged view of point A in the middle;

[0056] Figure 6 A flow chart of the production process of the PVC coil winding device provided in an embodiment of the present disclosure.

[0057] In the figure: 100, bracket body; 110, side column; 120, frame; 200, conveying roller; 300, winding roller; 310, winding drum; 400, pressure roller mechanism; 410, adjusting cylinder; 420, pressure rod; 430, elastic member; 431, lifting plate; 432, sleeve; 433, telescopic rod; 434, return spring; 440, pressure wheel; 441, slide tube; 450, back plate; 451, sliding groove; 451a, vertical section; 451b, inclined section; 452, slide rod; 500, infrared detection module. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] Research has found that the pressure roller mechanism in the related technology uses a return spring to support the pressure roller. As the thickness of the PVC board rolled up by the winding roller increases, the pressure between the pressure roller and the PVC board will gradually increase, thereby causing the friction force on the PVC board to gradually increase. If the PVC board is rolled up at the previous speed, the local temperature of the PVC board will overheat, affecting the performance of the PVC coil.

[0060] Based on the above research, an embodiment of the present disclosure provides a PVC coil winding device and a production process thereof, which dynamically adjusts the height of the pressure roller mechanism and thereby adjusts the friction between the PVC board and the pressure roller, thereby avoiding excessive local temperature of the PVC board.

[0061] The defects existing in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present invention in this article for the above problems should be the contributions made by the inventor to the present invention during the disclosure process.

[0062] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0063] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0064] See also Figure 1 and Figure 2 At least one embodiment provides a PVC coil winding device, comprising the following structure:

[0065] The bracket body 100 includes two side columns 110 and a U-shaped frame 120 connecting the side columns 110 .

[0066] The conveying roller 200 is disposed on the support body 100 .

[0067] Specifically, the conveying roller 200 is rotatably disposed between the two side columns 110 , and a driving motor for rotating the conveying roller 200 and a corresponding transmission gear set are disposed in at least one of the side columns 110 .

[0068] In a preferred embodiment, there are two conveying rollers 200 , and the two conveying rollers 200 are arranged side by side.

[0069] The winding roller 300 is disposed on the support body 100 .

[0070] Specifically, the winding roller 300 is slidably disposed between the two side pillars 110 , and rises as the thickness of the wound PVC board increases.

[0071] The pressing roller mechanism 400 is disposed above the winding roller 300 and is used to press the PVC board rolled up by the winding roller 300 .

[0072] Specifically, the pressing roller mechanism 400 is disposed on the frame 120 of the support body 100 , and abuts against the PVC board rolled up by the winding roller 300 , and presses the PVC board.

[0073] The infrared detection module 500 is disposed on the support body 100 and is used to detect the rising distance of the winding roller 300 .

[0074] Specifically, the infrared detection module 500 is an infrared distance sensor, two of which are respectively disposed in corresponding side pillars 110 .

[0075] The control module is configured to adjust the height of the pressing roller mechanism 400 according to the received rising distance, so as to adjust the friction force on the PVC board rolled up by the winding roller 300.

[0076] The height of the pressing roller mechanism 400 is adjusted through the control module, thereby adjusting the friction force on the PVC board rolled up by the winding roller 300, thereby maintaining the pressure between the pressing roller mechanism 400 and the PVC board within the required range, and further ensuring that the friction between the PVC board and the pressing roller and the temperature generated at the preset winding speed will not affect the quality of the PVC board.

[0077] Please continue reading Figure 1 The pressing roller mechanism 400 includes the following structures: two adjusting cylinders 410 , which are fixedly arranged on both sides of the bracket body 100 and located above the winding roller 300 .

[0078] The two regulating cylinders 410 are raised and lowered synchronously under the control of the control module, so that the axes of the pressing roller and the winding roller 300 are always kept horizontal.

[0079] The pressure rod 420 has two ends elastically connected to the piston rod of the regulating cylinder 410 through elastic members 430 .

[0080] The pressure rod 420 is provided with a plurality of pressure wheels 440, and the pressure wheels 440 abut against the outer wall of the PVC board after being rolled up by the winding roller 300. The plurality of pressure wheels 440 are used to disperse the heat generated by friction, thereby avoiding the local temperature of the PVC board being too high due to the concentrated contact of a single pressure roller with the PVC board, thereby avoiding affecting the performance of the PVC board.

[0081] The control module adjusts the height of the pressing roller mechanism 400 according to the received rising distance, that is, adjusts the extension distance of the piston rod of the regulating cylinder 410 according to the received rising distance.

[0082] See also Figure 3 , the rising distance of the winding roller 300 is L, and the extending distance of the piston rod of the regulating cylinder 410 is H; wherein, H=αL; wherein, α is the distance adjustment coefficient, and its value is 1.5-1.95, and the units of H and L are cm.

[0083] It should be noted that when the pressure between the pressure wheel and the coil remains unchanged, the extension distance of the piston rod H = 2L. As the thickness of the PVC board increases with the winding, in order to ensure the winding effect, it is necessary to slightly increase the pressure between the pressure wheel and the coil, that is, it is necessary to select a coefficient α smaller than 2 to meet the use requirements of the winding. After many tests, it is found that the value of α is 1.5-1.95, which will not have a significant impact on the winding speed and also meet the winding requirements. The value of α is set according to different coil thicknesses and winding speeds.

[0084] At the same time, the increase in the thickness of the coil will disperse the heat generated by friction, thereby avoiding excessive local temperature.

[0085] See also Figure 4 and Figure 5 , the pressing roller mechanism 400 also includes the following structure:

[0086] The back plate 450 is vertically disposed on the bracket body 100 and has a plurality of sliding grooves 451 spaced apart therefrom.

[0087] The distance between the back plate 450 and the winding roller 300 is greater than the thickness of the PVC board rolled up by the winding roller 300 .

[0088] The pressing wheel 440 is sleeved on the pressing rod 420 via a sliding tube 441 ; a sliding rod 452 inserted into the sliding groove 451 is disposed on the side wall of the sliding tube 441 .

[0089] It should be noted that the pressure wheel 440 is rotatably disposed on the slide tube 441 , and limiting flanges are radially extended outward on both sides of the slide tube 441 to limit the pressure wheel 440 , thereby preventing the pressure wheel 440 from sliding off the slide tube 441 .

[0090] The pressing wheel 440 rises as the thickness of the PVC board rolled up by the winding roller 300 increases, thereby driving the sliding rod 452 to slide along the sliding groove 451, thereby adjusting the abutting position between the pressing wheel 440 and the PVC board rolled up by the winding roller.

[0091] In some embodiments, the sliding groove 451 is tilted on the back plate 450 to drive the sliding tube 441 to slide along the axial direction of the pressing rod 420 when the pressing wheel 440 rises, thereby adjusting the contact position between the pressing wheel 440 and the PVC board wound by the winding roller. The sliding direction of the pressing wheel 440 is as follows: Figure 4 As shown in F1 or F2, the inclination angle a of the sliding groove 451 ranges from 70° to 85°.

[0092] Taking the winding speed of 1m / s and the coil thickness of 1.5mm as an example, the inclination angle a and the local temperature of the coil are shown in the following table:

[0093] Tilt angle a(°) Coil surface temperature (℃) Temperature fluctuation (±℃) 70 47.2 ±2.1 75 59.4 ±1.8 80 66.1 ±1.5 85 76.3 ±1.2

[0094] The temperature resistance value of PVC coil is 80℃, that is, when coiled, the surface temperature of the coil cannot be higher than 80℃. According to the analysis in the above table, when the inclination angle a is between 70°-85°, the temperature resistance requirement of PVC coil can be met. When the inclination angle a is 85°, the surface temperature of the coil is close to 80℃.

[0095] Therefore, in a preferred embodiment, the inclination angle a is 75°.

[0096] When winding, the abutting position between the pressing wheel 440 and the PVC board is changed, thereby changing the position where the PVC board is subjected to the friction force, thereby preventing the local temperature of the PVC board from being too high.

[0097] See also Figure 5The sliding groove 451 includes a plurality of vertical segments 451a spaced from bottom to top, and an inclined segment 451b connecting adjacent vertical segments 451a; wherein the inclined directions of the inclined segments 451b in each sliding groove 451 are consistent.

[0098] The horizontal spacing between two adjacent vertical segments is greater than the width of the pressing wheel, that is, the extrusion position of the pressing wheel is staggered on each vertical segment, thereby changing the position where the PVC board is subjected to friction and avoiding excessive local temperature of the PVC board.

[0099] In a preferred embodiment, the opening direction of the sliding grooves 451 located at the two ends of the multiple sliding grooves 451 is inclined outward from bottom to top, so that the pressure wheel 440 rises as the thickness of the PVC board rolled up by the winding roller 300 increases, thereby driving the sliding rod 452 to slide along the sliding groove 451, so that the two pressure wheels 440 corresponding to the sliding grooves 451 located at the two ends of the multiple sliding grooves 451 slide outward along the axial direction of the pressure rod 420.

[0100] Specifically, Figure 4 The sliding direction of the pressing wheel 440 corresponding to the leftmost sliding groove 451 is shown as F1. Figure 4 The sliding direction of the pressing wheel 440 corresponding to the rightmost sliding groove 451 is shown as F2.

[0101] See also Figure 1 The elastic member 430 includes: a lifting plate 431, which is arranged on the piston rod of the regulating cylinder 410; a sleeve 432, which is fixedly arranged on the lifting plate 431; a telescopic rod 433, one end of which is arranged toward the winding roller 300 and is elastically connected to the sleeve 432 through a reset spring 434, and the other end of the telescopic rod 433 passes through the sleeve 432; the telescopic rod 433 is also provided with a through hole for the pressure rod 420 to pass through; the pressure rod 420 is fixedly connected to the telescopic rod 433 after passing through the through hole.

[0102] See also Figure 6 At least one embodiment provides a production process for the PVC coil winding device as described above, the process comprising:

[0103] Step S1, fixing the reeling end of the PVC board to be reeled on the reeling drum 310;

[0104] Step S2, after the winding sleeve 310 is arranged on the winding roller 300, the winding roller is inserted into the bracket body 100;

[0105] Step S3, controlling the conveying roller 200 to start rotating, thereby driving the winding drum 310 to rotate, and then winding the PVC board;

[0106] Step S4, when winding, the rising distance of the winding roller 300 is detected, and according to the received rising distance, the height of the pressing roller mechanism 400 is adjusted to adjust the friction force on the PVC board wound by the winding roller 300.

[0107] See also Figure 1 , the pressing roller mechanism 400 includes the following structure:

[0108] Two adjusting cylinders 410 are fixedly arranged on both sides of the support body 100 and are located above the winding roller 300. Under the control of the control module, the two adjusting cylinders 410 are synchronously raised and lowered so that the axes of the pressing roller and the winding roller 300 are always kept horizontal.

[0109] A pressure rod 420, both ends of which are elastically connected to the piston rod of the regulating cylinder 410 through elastic members 430;

[0110] A plurality of pressing wheels 440 are sleeved on the pressing rod 420 , and the pressing wheels 440 abut against the outer wall of the PVC board rolled up by the winding roller 300 .

[0111] The pressure rod 420 is provided with a plurality of pressure wheels 440, and the pressure wheels 440 abut against the outer wall of the PVC board after being rolled up by the winding roller 300. The plurality of pressure wheels 440 are used to disperse the heat generated by friction, thereby avoiding the local temperature of the PVC board being too high due to the concentrated contact of a single pressure roller with the PVC board, thereby avoiding affecting the performance of the PVC board.

[0112] The height of the pressing roller mechanism 400 is adjusted according to the received rising distance, that is, the extension distance of the piston rod of the adjusting cylinder 410 is adjusted according to the received rising distance.

[0113] In summary, the present invention provides a PVC coil winding device and a production process thereof, wherein the PVC coil winding device includes: a support body 100; a conveying roller 200, which is arranged on the support body 100; a winding roller 300, which is arranged on the support body 100; a pressure roller mechanism 400, which is arranged above the winding roller 300 and is used to press the PVC board wound by the winding roller 300; an infrared detection module 500, which is arranged on the support body 100 and is used to detect the rising distance of the winding roller 300; a control module, which is configured to adjust the height of the pressure roller mechanism 400 according to the received rising distance, so as to adjust the friction force on the PVC board wound by the winding roller 300. By detecting the rising distance of the winding roller 300 and adjusting the height of the pressing roller mechanism 400 according to the rising distance, the friction force on the PVC board rolled up by the winding roller 300 is adjusted, so as to keep the friction force between the pressing roller mechanism 400 and the PVC board within a preset range, thereby avoiding excessive local temperature of the PVC board due to friction, thereby not affecting the quality of the PVC board.

[0114] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A PVC coil winding device, characterized in that: include: The support body (100); A conveying roller (200) arranged on the support body (100); A winding roller (300) arranged on the support body (100); A pressing roller mechanism (400), which is arranged above the winding roller (300) and is used to press the PVC board rolled up by the winding roller (300); an infrared detection module (500), which is arranged on the support body (100) and is used to detect the rising distance of the winding roller (300); The control module is configured to adjust the height of the pressing roller mechanism (400) according to the received rising distance, so as to adjust the friction force applied to the PVC board rolled up by the winding roller (300).

2. The PVC coil winding device according to claim 1, characterized in that: The pressing roller mechanism (400) comprises: Two regulating cylinders (410) fixedly arranged on both sides of the support body (100) and located above the winding roller (300); A pressure rod (420), both ends of which are elastically connected to the piston rod of the regulating cylinder (410) via elastic members (430); A plurality of pressing wheels (440) are sleeved on the pressing rod (420), and the pressing wheels (440) abut against the outer wall of the PVC board rolled up by the winding roller (300); The control module adjusts the height of the pressure roller mechanism (400) according to the received rising distance, that is, adjusts the extension distance of the piston rod of the regulating cylinder (410) according to the received rising distance.

3. The PVC coil winding device according to claim 2, characterized in that: The rising distance of the winding roller is L, and the extension distance of the piston rod of the regulating cylinder is H; Where, H = αL; Where α is the distance adjustment coefficient, its value is 1.5-1.95, and the units of H and L are cm.

4. The PVC coil winding device according to claim 2, characterized in that: The pressing roller mechanism (400) further comprises: A back plate (450) vertically arranged on the support body (100) and having a plurality of sliding grooves (451) spaced apart; The pressing wheel (440) is sleeved on the pressing rod (420) via a sliding tube (441); The side wall of the sliding tube (441) is provided with a sliding rod (452) inserted into the sliding groove (451); The pressing wheel (440) rises as the thickness of the PVC plate rolled up by the winding roller (300) increases, thereby driving the sliding rod (452) to slide along the sliding groove (451), thereby adjusting the abutment position between the pressing wheel (440) and the PVC plate rolled up by the winding roller (300).

5. The PVC coil winding device according to claim 4, characterized in that: The sliding groove (451) is obliquely arranged on the back plate (450) so as to drive the sliding tube (441) to slide along the axial direction of the pressing rod (420) when the pressing wheel (440) rises, thereby adjusting the abutment position between the pressing wheel (440) and the PVC board rolled up by the winding roller (300).

6. The PVC coil winding device according to claim 4, characterized in that: The sliding groove (451) comprises a plurality of vertical sections (451a) spaced apart from bottom to top, and an inclined section (451b) connecting adjacent vertical sections (451a); The inclined directions of the inclined sections (451b) in each sliding groove (451) are consistent.

7. The PVC coil winding device according to claim 4, characterized in that: The opening direction of the sliding grooves (451) located at the two ends of the plurality of sliding grooves (451) is inclined from bottom to top and outward; The pressing wheel (440) rises as the thickness of the PVC board rolled up by the winding roller (300) increases, thereby driving the sliding rod (452) to slide along the sliding groove (451), so that the two pressing wheels (440) corresponding to the sliding grooves (451) located at both ends of the plurality of sliding grooves (451) slide outward along the axial direction of the pressing rod (420).

8. The PVC coil winding device according to claim 2, characterized in that: The elastic member (430) comprises: A lifting plate (431) disposed on the piston rod of the regulating cylinder (410); A sleeve (432) fixedly disposed on the lifting plate (431); A telescopic rod (433), one end of which is arranged toward the winding roller (300) and is elastically connected to the sleeve (432) via a return spring (434); the other end of the telescopic rod (433) passes through the sleeve (432); The telescopic rod (433) is also provided with a through hole for the pressure rod (420) to pass through; The compression rod (420) is fixedly connected to the telescopic rod (433) after passing through the through hole.

9. A production process for the PVC coil winding device according to claim 1, characterized in that: The process comprises: Fixing the reeled end of the PVC board to be reeled on the reeling drum (310); After the winding drum (310) is sleeved on the winding roller (300), the winding roller is inserted into the support body (100); Controlling the conveying roller (200) to start rotating, thereby driving the reel (310) to rotate, thereby reeling in the PVC board; When winding up, the rising distance of the winding roller (300) is detected, and the height of the pressing roller mechanism (400) is adjusted according to the received rising distance, so as to adjust the friction force exerted on the PVC board wound up by the winding roller (300).

10. The production process of the PVC coil winding device according to claim 9, characterized in that: The pressing roller mechanism (400) comprises: Two regulating cylinders (410) fixedly arranged on both sides of the support body (100) and located above the winding roller (300); A pressure rod (420), both ends of which are elastically connected to the piston rod of the regulating cylinder (410) via elastic members (430); A plurality of pressing wheels (440) are sleeved on the pressing rod (420), and the pressing wheels (440) abut against the outer wall of the PVC board rolled up by the winding roller (300); The height of the pressing roller mechanism (400) is adjusted according to the received rising distance, that is, the extension distance of the piston rod of the adjusting cylinder (410) is adjusted according to the received rising distance.

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