Auxiliary tightening device for framing cloth

Abstract

The invention discloses a sectional cloth winding auxiliary tightening device, comprising a wall panel, a winding roller, an upper cloth pressing roller, a lower cloth pressing roller, a cloth pressing shaft and a cloth winding roller, wherein the wall panel comprises a left wall panel and a right wall panel, and the winding roller is transversely arranged between the left and right wall panels. The lower cloth pressing roller is arranged at the front side of the winding roller, and is movably connected with the left and right wall panels through a lower cloth pressing roller arm, and the lower cloth pressing roller arm is connected with the wall panel on the same side through a tensioning mechanism. The cloth winding roller is arranged below the winding roller, and the cloth pressing shaft is located at the rear side of the cloth winding roller and arranged relatively parallel to the cloth winding roller, and a connecting rod is respectively arranged at the left and right ends of the cloth pressing shaft, and each connecting rod is rotatably connected with the wall panel on the same side through a support shaft. A transmission mechanism is arranged on the right side of the left wall panel, and the left end of the lower cloth pressing roller drives the cloth pressing shaft to rotate through the transmission mechanism. The lower cloth pressing roller of the invention drives the cloth pressing shaft to rotate, and the cloth pressing shaft presses the cloth surface, and actively tightens the cloth surface through relative sliding friction, so that the cloth winding effect is good, the cloth is rolled flat, and wrinkles are eliminated.

Description

Technical Field

[0001] The invention relates to the technical field of textile machinery, and in particular to an auxiliary tightening device for framing cloth. Background Art

[0002] When the existing fiberglass loom is winding the cloth in sections, the cloth pressing shaft presses the cloth surface of the cloth winding roller, and the two sides are supported by bearings, which rotate passively with the cloth surface. When winding tightly, it can only play the role of pressing the cloth. When the length of the cloth produced on both sides is uneven, it is easy to wrinkle, which affects the quality of the cloth surface and produces defective cloth. Therefore, a kind of auxiliary winding device for winding the cloth in sections is needed to solve the problem that the cloth is easy to wrinkle when winding tightly. Summary of the invention

[0003] In view of the deficiencies of the above-mentioned prior art, the purpose of the present invention is to propose a divided cloth winding auxiliary tightening device to solve the problem that the cloth pressing shaft of the existing loom rotates passively with the cloth surface, can only play a cloth pressing role when winding, is prone to wrinkling, affects the quality of the cloth surface, and causes defective cloth.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A cloth-winding auxiliary tightening device comprises a wall panel, a winding roller, an upper cloth-pressing roller, a lower cloth-pressing roller, a cloth-pressing shaft and a cloth-winding roller. There are two wall panels, a left wall panel and a right wall panel arranged opposite to each other. The winding roller is arranged horizontally between the left and right wall panels.

[0006] The lower cloth pressing roller is arranged in front of the winding roller, and its two ends are movably connected with the left and right wall panels through the lower cloth pressing roller arms respectively. One end of the lower cloth pressing roller arm is rotatably connected with the wall panel on the same side, and the other end is connected with the wall panel on the same side through the tensioning mechanism.

[0007] The cloth rolling roller is arranged below the winding roller, the cloth pressing shaft is located at the rear side of the cloth rolling roller and arranged relatively parallel to it, a connecting rod is respectively provided at the left and right ends of the cloth pressing shaft, and each connecting rod is rotatably connected to the wall panel on the same side through a support shaft.

[0008] A transmission mechanism is arranged on the right side of the left wall panel, and the left end of the lower cloth pressing roller drives the cloth pressing shaft to rotate through the transmission mechanism.

[0009] Furthermore, an upper cloth pressing roller arm is respectively provided at the left and right ends of the upper cloth pressing roller, one end of the upper cloth pressing roller arm is fixedly connected to the wall panel on the same side, and the left and right ends of the upper cloth pressing roller are respectively rotatably matched with the two upper cloth pressing roller arms.

[0010] Furthermore, one end of each of the lower cloth pressing roller arms is rotatably connected to the wall panel on the same side, and the end of the lower cloth pressing roller penetrates into the middle part of the corresponding lower cloth pressing roller arm to rotate with it.

[0011] Furthermore, the tensioning mechanism includes a hanging spring plate, a first tension spring, a spring pull rod and a handwheel. The hanging spring plate is fixed to the wall panel, the rear end of the spring pull rod is connected to the hanging spring plate through the first tension spring, and its front end passes through the other end of the lower cloth pressing roller arm and is threadedly connected to the handwheel.

[0012] Furthermore, two supporting arms are symmetrically provided on the side where the left and right wall panels are close to each other, the rear ends of the supporting arms are fixedly connected to the wall panels, and the supporting shafts are fixed to the front ends of the supporting arms.

[0013] The upper end of the connecting rod is rotatably connected with the support shaft on the same side, the two ends of the cloth pressing shaft are respectively rotatably connected with the lower ends of the two connecting rods, and a screw rod is arranged in the middle of each connecting rod.

[0014] A hook is arranged at the rear of each connecting rod, the upper end of the hook is rotatably connected with the wallboard on the same side, and the lower end of the hook is used for hanging the screw rod on the connecting rod.

[0015] Furthermore, the transmission mechanism comprises a driving sprocket, a double sprocket and a driven sprocket, wherein the driving sprocket is fixedly mounted on the left end of the lower cloth pressing roller, and the axle of the double sprocket is coaxially rotatably connected with the support shaft on the left side.

[0016] The driven sprocket is fixedly installed on the left end of the cloth pressing shaft, the driving sprocket is connected with one sprocket of the double sprocket through a first chain, and the other sprocket of the double sprocket is connected with the driven sprocket through a second chain.

[0017] Furthermore, a first tensioning assembly is provided on the right side of the left wall panel, and the first tensioning assembly includes a tensioning link, a spring pin shaft, a second tension spring and a first tensioning wheel. One end of the tensioning link is movably sleeved on the support shaft on the left side, the spring pin shaft is transversely arranged at the other end of the tensioning link, and the first tensioning wheel is arranged on the spring pin shaft.

[0018] A spring connecting rod is adjustably fixedly installed on the left support arm, and a spring hanging rod is provided on the spring connecting rod. One end of the second tension spring is hung with the spring pin shaft, and the other end is connected to the spring hanging rod. The second tension spring pulls the first tension wheel and presses it against the outside of the first chain.

[0019] Furthermore, a second tensioning assembly is provided on the right side of the left wall panel, and the second tensioning assembly includes a support plate, a tensioning rod pin, a torsion spring, a tensioning swing rod and a second tensioning wheel. The support plate is fixedly mounted on the connecting rod on the left side, and the tensioning rod pin is arranged horizontally, with its left end being rotatably connected to the support plate and its right end being fixedly connected to the middle part of the tensioning swing rod.

[0020] The torsion spring is sleeved on the tension rod pin, there are two second tension wheels which are respectively arranged at the two ends of the tension swing rod, the second chain passes through the two second tension wheels, and the torsion spring drives the two second tension wheels to press on the inner and outer sides of the second chain.

[0021] Furthermore, a cloth rolling roller seat is respectively provided at the lower part of the left wall panel and the right wall panel, the two cloth rolling roller seats are symmetrically arranged and respectively fixedly connected to the left and right wall panels, and the left and right ends of the cloth rolling roller are respectively rotatably matched with the two cloth rolling roller seats.

[0022] Furthermore, the left and right ends of the winding roller are rotatably connected to the left wall panel and the right wall panel respectively, and the lower cloth pressing roller is arranged relatively parallel to the winding roller.

[0023] By adopting the above technical solution, the beneficial technical effects of the present invention are:

[0024] The lower cloth pressing roller and the cloth pressing shaft of the present invention are respectively provided with sprockets. The lower cloth pressing roller rotates with the winding roller under the action of friction force. The active sprocket on the lower cloth pressing roller transmits power to the lower cloth pressing shaft through the chain via a double sprocket group, thereby driving the cloth pressing shaft to rotate. The number of teeth of the chain transmission sprocket is designed according to the diameter ratio of the lower cloth pressing roller and the cloth pressing shaft. The designed transmission ratio ensures that the surface linear speed of the cloth pressing shaft is slightly faster than the surface linear speed of the cloth rolling roller. The cloth pressing shaft presses the cloth surface under the action of gravity. Through a slight slip between the surface of the cloth pressing shaft and the surface of the cloth roll, a tensioning effect is generated on the cloth surface under the action of surface friction, thereby achieving the effect of tightening the cloth roll. The use effect is good, the cloth is rolled smoothly, and wrinkles are eliminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention is a schematic diagram of the structural principle of a framing cloth rolling auxiliary tightening device.

[0026] Figure 2 The present invention is a schematic diagram of the main structure of a framing cloth rolling auxiliary tightening device.

[0027] Figure 3 yes Figure 2 A cross-sectional view of the present invention taken along the AA direction.

[0028] Figure 4 yes Figure 2 A cross-sectional view of the present invention taken along the BB direction.

[0029] Figure 5 The present invention discloses a cloth rolling circuit schematic diagram of a cloth-rolling auxiliary tightening device for a divided cloth. DETAILED DESCRIPTION

[0030] The present invention is described in detail below in conjunction with the accompanying drawings:

[0031] Combination Figures 1 to 5A cloth-winding auxiliary tightening device for a split-width cloth roll comprises a wall panel, a winding roller 110, an upper cloth-pressing roller 120, a lower cloth-pressing roller 130, a cloth-pressing shaft 210 and a cloth-winding roller 310. There are two wall panels, namely a left wall panel 101 and a right wall panel 102 arranged opposite to each other. The winding roller 110 is transversely arranged between the left wall panel 101 and the right wall panel 102. The left and right ends of the winding roller 110 are rotatably connected to the left wall panel 101 and the right wall panel 102, respectively. Two fixing plates are respectively arranged at the upper part of the opposite side of the two wall panels, and the two fixing plates are respectively a left fixing plate 103 and a right fixing plate 104. The left fixing plate 103 is fixedly installed on the right side of the left wall panel 101, and the right fixing plate 104 is fixedly installed on the left side of the right wall panel 102.

[0032] An upper cloth pressing roller arm 121 is respectively provided at the left and right ends of the upper cloth pressing roller 120 , one end of the upper cloth pressing roller arm 121 is fixedly connected to the wallboard on the same side, and the left and right ends of the upper cloth pressing roller 120 are respectively rotatably matched with the two upper cloth pressing roller arms 121 .

[0033] The lower cloth pressing roller 130 is arranged at the front side of the winding roller 110, and the lower cloth pressing roller 130 is arranged relatively parallel to the winding roller 110. The left and right ends of the lower cloth pressing roller 130 are respectively movably connected to the left fixed plate 103 and the right fixed plate 104 through the lower cloth pressing roller arms 132, one end of each of the lower cloth pressing roller arms 132 is rotatably connected to the wallboard on the same side, and the end of the lower cloth pressing roller 130 penetrates into the middle part of the corresponding lower cloth pressing roller arm 132 to rotate with it. Specifically, the upper end of each lower cloth pressing roller arm 132 is rotatably connected to the wallboard on the same side through the pressing roller pin 133, and the other end is connected to the wallboard on the same side through a tensioning mechanism.

[0034] The tensioning mechanism includes a spring plate 134, a first tension spring 135, a spring pull rod 136 and a hand wheel 137. The spring plate 134 is fixed on the corresponding wall panel, the spring pull rod 136 is located on the front side of the spring plate 134, the rear end of the spring pull rod 136 is connected to the spring plate 134 through the first tension spring 135, and the front end thereof passes through the oblong hole at the other end of the lower cloth pressing roller arm 132 and is threadedly connected to the hand wheel 137. After installation, the first tension spring 135 always remains in a stretched state, and the tension of the first tension spring 135 is adjusted by the hand wheel 137, thereby adjusting the pressure of the lower cloth pressing roller 130 on the winding roller 110.

[0035] The cloth rolling roller 310 is arranged below the winding roller 110, and a cloth rolling roller seat 301 is respectively provided at the lower part of the left wall panel 101 and the right wall panel 102. The two cloth rolling roller seats 301 are symmetrically arranged and respectively fixedly installed on the left wall panel 101 and the right wall panel 102. The left and right ends of the cloth rolling roller 310 are respectively rotatably cooperated with the two cloth rolling roller seats 301, and one end of the cloth rolling roller 310 is connected to the transmission device of the loom and is driven to rotate by the transmission device of the loom to achieve cloth rolling.

[0036] The cloth pressing shaft 210 is located at the rear side of the cloth rolling roller 310 and is arranged relatively parallel to the cloth rolling roller 310. A connecting rod is respectively provided at the left and right ends of the cloth pressing shaft 210. The connecting rod at the left end of the cloth pressing shaft 210 is the left connecting rod 203, and the connecting rod at the right end of the cloth pressing shaft 210 is the right connecting rod 204. Two supporting arms are symmetrically provided on the side where the left wall panel 101 and the right wall panel 102 are close to each other. The two supporting arms are respectively the left supporting arm 201 and the right supporting arm 202. The rear end of the left supporting arm 201 is fixedly connected to the left wall panel 101, and the rear end of the right supporting arm 202 is fixedly connected to the right wall panel 102.

[0037] Each connecting rod is rotatably connected to the wall panel on the same side through a support shaft, the front end of the left support arm 201 is detachably fixedly mounted with a left support shaft 205, and the front end of the right support arm 202 is detachably fixedly mounted with a right support shaft 206. Specifically, the upper end of the left connecting rod 203 is rotatably connected to the left support arm 201 through the left support shaft 205, and the upper end of the right connecting rod 204 is rotatably connected to the right support arm 202 through the right support shaft 206.

[0038] The left and right ends of the cloth pressing shaft 210 are respectively connected to the lower ends of the left connecting rod 203 and the right connecting rod 204, and a screw rod 212 is provided in the middle of each connecting rod. A hook 211 is provided at the rear of each connecting rod, and the upper end of the hook 211 is connected to the right wall plate 102, and the lower end is used to hang the screw rod 212 on the right connecting rod. When the left connecting rod 203 and the right connecting rod 204 are pushed backward, each screw rod 212 is hung on the corresponding hook 211, so that the cloth pressing shaft 210 is separated from the cloth rolling roller 310, which is convenient for dropping the cloth.

[0039] A transmission mechanism is disposed on the right side of the left wall panel 101 , and the left end of the lower cloth pressing roller 130 drives the cloth pressing shaft 210 to rotate through the transmission mechanism.

[0040] Specifically, the transmission mechanism includes a driving sprocket 401, a double sprocket 403, and a driven sprocket 405. The driving sprocket 401 is fixedly mounted on the left end of the lower cloth pressing roller 130, and the wheel shaft of the double sprocket 403 is coaxially rotatably connected with the left support shaft 205. The driven sprocket 405 is fixedly mounted on the left end of the cloth pressing shaft 210, and the driving sprocket 401 is connected to one sprocket of the double sprocket 403 through a first chain 402, and the other sprocket of the double sprocket 403 is connected to the driven sprocket 405 through a second chain 404.

[0041] The pressure of the lower cloth pressing roller 130 on the winding roller 110 causes the winding roller 110 to drive the lower cloth pressing roller 130 to rotate. The lower cloth pressing roller 130 drives the double sprocket 403 to rotate through the first chain 402, and the double sprocket 403 drives the cloth pressing shaft 210 to rotate through the second chain 404.

[0042] A first tensioning assembly is provided on the right side of the left wall panel 101, and the first tensioning assembly includes a tensioning link 501, a spring pin 502, a second tension spring 504, and a first tensioning wheel 503. One end of the tensioning link 501 is movably sleeved on the left support shaft 205 and can rotate around the left support shaft 205. The spring pin 502 is transversely arranged at the other end of the tensioning link 501, and the first tensioning wheel 503 is arranged on the spring pin 502.

[0043] A spring connecting rod 506 is adjustably fixedly installed on the left support arm 201, and a spring hanging rod 505 is provided on the spring connecting rod 506. One end of the second tension spring 504 is hung with the spring pin shaft 502, and the other end is connected to the spring hanging rod 505. The second tension spring 504 pulls the first tension wheel 503 and presses it against the outside of the first chain 402.

[0044] A second tensioning assembly is also provided on the right side of the left wall panel 101. The second tensioning assembly includes a support plate 601, a tensioning rod pin 602, a torsion spring 603, a tensioning swing rod 604 and a second tensioning wheel 605. The support plate 601 is fixedly mounted on the connecting rod on the left side. The tensioning rod pin 602 is arranged horizontally, and its left end is rotatably connected to the support plate 601, and its right end is fixedly connected to the middle of the tensioning swing rod 604. The torsion spring 603 is sleeved on the tensioning rod pin 602. There are two second tensioning wheels 605, which are respectively arranged at both ends of the tensioning swing rod 604. The second chain 404 passes between the two second tensioning wheels 605. The torsion spring 603 drives the two second tensioning wheels 605 to press against the inner and outer sides of the second chain 404.

[0045] The general working principle of the auxiliary tightening device for framing cloth rolling of the present invention is as follows: bearings are installed at both ends of the lower cloth pressing roller 130 to ensure smooth rotation in the two lower cloth pressing roller arms 132, one end of the two lower cloth pressing roller arms 132 is supported on the left fixed plate 103 and the right fixed plate 104 by the pressing roller pin 133 respectively, and the other end passes through the hanging spring plate 134, the tension spring 135, the spring pull rod 136, and the hand wheel 137. Under the action of the spring force, the lower cloth pressing roller 130 is close to the winding roller 110. When the cloth passes through the upper cloth pressing roller 120, the winding roller 110 and the lower cloth pressing roller 130, the cloth winding roller 310 is an inflatable shaft. When the cloth is wound up by the cloth winding roller 310, a certain pressure is generated on the lower cloth pressing roller 130. In addition, the friction force generated by the weight of the lower cloth pressing roller 130 and the rubber thorn skin drives the lower cloth pressing roller 130 to rotate with the winding roller 110 to generate power.

[0046] The driving sprocket 401 is installed on the lower cloth pressing roller 130 and rotates with the lower cloth pressing roller 130. It is connected with a sprocket of the double sprocket 403 through the first chain 402, and the power is transmitted to the double sprocket 403. The double sprocket 403 is fixed on the left support arm 201 through the left support shaft 205 to play a supporting role. The other sprocket of the double sprocket 403 drives the driven sprocket 405 to rotate through the second chain 404. The driven sprocket 405 is fixedly installed on the cloth pressing shaft 210, and the cloth pressing shaft 210 rotates with the sprocket 405, so as to realize the active cloth pressing and play the role of auxiliary cloth winding.

[0047] The upper ends of the left connecting rod 203 and the right connecting rod 204 are respectively rotatably mounted on the front ends of the left supporting arm 201 and the right supporting arm 202 with the left supporting shaft 205 and the right supporting shaft 206 as the center. The lower ends of the left connecting rod 203 and the right connecting rod 204 are respectively provided with bearings, which are rotatably connected with the left and right ends of the cloth pressing shaft 210 to ensure that the cloth pressing shaft 210 presses the cloth roll. Since the center of the middle double sprocket wheel 403 and the supporting center of the connecting rod are all on the same supporting shaft, when the cloth roll increases, the transmission is not affected.

[0048] When the cloth is dropped, the hook 211 rotates around the connection between the upper end and the wallboard, hooking the bolts 211 of the left connecting rod 203 and the right connecting rod 204, so that the cloth pressing shaft 210 is separated from the cloth roll.

[0049] The tensioning link 501, spring pin 502, first tensioning wheel 503, second tension spring 504, spring hooking rod 505, spring link 506 and other components constitute the first tensioning assembly. The tensioning method of the first tensioning assembly is as follows: the tensioning link 501 takes the left support shaft 205 as the rotation center, the spring pin 502 at the other end of the tensioning link 501 is installed with the first tensioning wheel 503, the second tension spring 504 is in a stretched state, and the spring pin 502 is always kept in a backward tension, and the tensioning wheel 503 is pressed on the first chain 402. The spring hooking rod 505 is installed on the spring link 506, and the tension of the spring 504 can be adjusted by adjusting the position of the spring link 506 on the left support arm 201, so as to adjust the tensioning force of the first chain 402.

[0050] The second tensioning assembly is composed of the supporting plate 601, the tensioning rod pin 602, the torsion spring 603, the tensioning swing rod 604 and the two second tensioning wheels 605. The tensioning method of the second tensioning assembly is as follows: the supporting plate 601 is fixed on the left connecting rod 203, the left side of the tensioning rod pin 602 crosses the supporting plate 601 and is connected to the supporting plate 601 for rotation, the right end of the tensioning rod pin 602 serves as the central support of the tensioning swing rod 604, the tensioning swing rod 604 can rotate around the axis of the tensioning rod pin 602, and the two second tensioning wheels 605 are respectively installed at both ends of the tensioning rod pin 602. The torsion spring 603 is sleeved on the tensioning rod pin 602, one end of which is connected to the tensioning rod pin 602 and the other end is connected to the supporting plate 601, providing torque to the tensioning swing rod 604, and the two second tensioning wheels 605 respectively press the inner and outer sides of the second chain 404 under the action of the torque, thereby tightening the second chain 404.

[0051] Parts not described in the present invention can be implemented by adopting or drawing on existing technologies.

[0052] Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0053] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0054] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A framing cloth auxiliary winding device, characterized in that: It includes a wall panel, a winding roller, an upper cloth pressing roller, a lower cloth pressing roller, a cloth pressing shaft and a cloth winding roller. There are two wall panels, a left wall panel and a right wall panel arranged opposite to each other. The winding roller is horizontally arranged between the left and right wall panels. The lower cloth pressing roller is arranged at the front side of the winding roller, and its two ends are movably connected with the left and right wall panels through the lower cloth pressing roller arms respectively. One end of the lower cloth pressing roller arm is rotatably connected with the wall panel on the same side, and the other end is connected with the wall panel on the same side through the tensioning mechanism. The cloth rolling roller is arranged below the take-up roller, the cloth pressing shaft is located at the rear side of the cloth rolling roller and arranged relatively parallel to the cloth pressing shaft, and a connecting rod is respectively provided at the left and right ends of the cloth pressing shaft, and each connecting rod is rotatably connected to the wall panel on the same side through a support shaft; A transmission mechanism is provided on the right side of the left wall panel, and the left end of the lower cloth pressing roller drives the cloth pressing shaft to rotate through the transmission mechanism; Two supporting arms are symmetrically arranged on the side where the left and right wall panels are close to each other, the rear ends of the supporting arms are fixedly connected to the wall panels, and the supporting shafts are fixed to the front ends of the supporting arms; The upper end of the connecting rod is rotatably connected to the support shaft on the same side, and the two ends of the cloth pressing shaft are rotatably connected to the lower ends of the two connecting rods respectively, and a screw is provided in the middle of each connecting rod; A hook is provided at the rear of each connecting rod, the upper end of the hook is rotatably connected to the wallboard on the same side, and the lower end is used to hang the screw on the connecting rod; The transmission mechanism comprises a driving sprocket, a double sprocket and a driven sprocket, wherein the driving sprocket is fixedly mounted on the left end of the lower cloth pressing roller, and the wheel shaft of the double sprocket is coaxially connected with the support shaft on the left side; The driven sprocket is fixedly installed at the left end of the cloth pressing shaft, the driving sprocket is connected to one sprocket of the double sprocket through a first chain, and the other sprocket of the double sprocket is connected to the driven sprocket through a second chain; The pressure of the lower cloth pressing roller on the winding roller causes the winding roller to drive the lower cloth pressing roller to rotate, and the lower cloth pressing roller drives the double sprocket to rotate through the first chain, and the double sprocket drives the cloth pressing shaft to rotate through the second chain.

2. The auxiliary tightening device for framing cloth according to claim 1, characterized in that: An upper cloth pressing roller arm is respectively arranged at the left and right ends of the upper cloth pressing roller, one end of the upper cloth pressing roller arm is fixedly connected to the wallboard on the same side, and the left and right ends of the upper cloth pressing roller are respectively rotatably matched with the two upper cloth pressing roller arms.

3. The auxiliary tightening device for framing cloth according to claim 1, characterized in that: One end of each lower cloth pressing roller arm is rotatably connected to the wallboard on the same side, and the end of the lower cloth pressing roller penetrates into the middle part of the corresponding lower cloth pressing roller arm to rotate with it.

4. The auxiliary tightening device for framing cloth according to claim 3, characterized in that: The tensioning mechanism includes a hanging spring plate, a first tension spring, a spring pull rod and a hand wheel. The hanging spring plate is fixed to the wall panel, the rear end of the spring pull rod is connected to the hanging spring plate through the first tension spring, and the front end thereof passes through the other end of the lower cloth pressing roller arm and is threadedly connected to the hand wheel.

5. The auxiliary tightening device for framing cloth according to claim 1, characterized in that: A first tensioning assembly is provided on the right side of the left wall panel, and the first tensioning assembly includes a tensioning connecting rod, a spring pin shaft, a second tension spring and a first tensioning wheel. One end of the tensioning connecting rod is movably sleeved on the support shaft on the left side, the spring pin shaft is transversely arranged at the other end of the tensioning connecting rod, and the first tensioning wheel is arranged on the spring pin shaft; A spring connecting rod is adjustably fixedly installed on the left support arm, and a spring hanging rod is provided on the spring connecting rod. One end of the second tension spring is hung with the spring pin shaft, and the other end is connected to the spring hanging rod. The second tension spring pulls the first tension wheel and presses it against the outside of the first chain.

6. The auxiliary tightening device for framing cloth according to claim 5, characterized in that: A second tensioning assembly is also provided on the right side of the left wall panel, and the second tensioning assembly includes a support plate, a tensioning rod pin, a torsion spring, a tensioning swing rod and a second tensioning wheel. The support plate is fixedly mounted on the connecting rod on the left side, and the tensioning rod pin is arranged horizontally, with its left end being rotatably connected to the support plate, and its right end being fixedly connected to the middle part of the tensioning swing rod; The torsion spring is sleeved on the tension rod pin, there are two second tension wheels which are respectively arranged at the two ends of the tension swing rod, the second chain passes through the two second tension wheels, and the torsion spring drives the two second tension wheels to press on the inner and outer sides of the second chain.

7. The auxiliary tightening device for framing cloth according to claim 1, characterized in that: A cloth rolling roller seat is respectively provided at the lower part of the left wall panel and the right wall panel. The two cloth rolling roller seats are symmetrically arranged and fixedly connected to the left and right wall panels respectively. The left and right ends of the cloth rolling roller are respectively rotatably matched with the two cloth rolling roller seats.

8. The auxiliary tightening device for framing cloth according to claim 1, characterized in that: The left and right ends of the winding roller are respectively connected to the left wall panel and the right wall panel for rotation, and the lower cloth pressing roller is arranged relatively parallel to the winding roller.

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