Cloth unwinding equipment

Abstract

The present application relates to the technical field of fabric processing, and in particular to a fabric unwinding device, which comprises a frame and an unwinding roller arranged on the frame, the unwinding roller is provided with a fabric roll, the frame is provided with a first flattening component for flattening the unrolled fabric, the frame is also provided with a tensioning mechanism for tightening the flattened fabric, the first flattening component comprises a rotating roller rotatably connected to the frame and a bidirectional threaded belt fixed on the rotating roller, the surface of the bidirectional threaded belt abuts against the surface of the fabric, the tensioning mechanism comprises a plurality of clamping components and a rotating component for driving the clamping components and the fabric to move simultaneously, the clamping component comprises a first clamping plate and a second clamping plate arranged on the rotating component, and the frame is provided with a pushing component for pushing the first clamping plate and the second clamping plate away from or close to each other. The present application has the effect of reducing the tensile deformation of the fabric.

Description

Technical Field

[0001] The present application relates to the technical field of cloth processing, and in particular to a cloth unwinding device. Background Art

[0002] When processing the fabric, it is necessary to print, dye, cut or other processes on the fabric processing machine. Usually, a unwinding roller with multiple turns of fabric raw material needs to be placed at one end of the fabric processing machine, and an empty roller for collecting the processed fabric needs to be placed at the other end of the fabric processing machine to complete the unwinding, processing and winding of the fabric, and finally the processed fabric is used to process clothes.

[0003] For example, a Chinese patent document with publication number CN117585497B discloses a textile fabric winding and unwinding device, comprising a machine body, a workbench arranged on the machine body, a winding roller located at one long end of the workbench and a unwinding roller located at the other end of the workbench, the unwinding roller and the winding roller are provided with a detection device for detecting the flatness of the fabric on the side where they are close to each other, and a stretching assembly is provided on the side where the detection devices are close to each other, the stretching assembly comprises two stretching claws located in the width direction of the machine body, the stretching claws are slidably connected to the machine body, the stretching claws are rotatably connected to a fitting part on the side where they are close to each other, and the fitting part is set as a horizontal part on the side where they are close to each other.

[0004] While the fabric is being rolled up and unrolled, the two detection devices are operated to be turned on. If the detection devices detect wrinkles on the fabric surface, the bonding parts on the same side are driven to move closer to each other, and the fabric is clamped between the two bonding parts on the same side. The stretching assembly is then operated to drive the two stretching claws to move away from each other, so that the wrinkled fabric can be stretched.

[0005] In the above-mentioned related technology, when the unrolled fabric is an elastic fabric and wrinkles appear in the middle position of the unrolled fabric, the edges of the elastic fabric are clamped by two stretching claws, and the two clamping claws move in directions away from each other, which can easily cause the elastic fabric to deform to a certain extent along its own width direction, causing the width of the stretched fabric to be greater than the width of the fabric itself, and also causing wrinkles to still exist in the middle of the fabric. Summary of the invention

[0006] The present application provides a cloth unwinding device, which aims to solve the problem in the related art that elastic cloth undergoes certain deformation along its width direction.

[0007] The present application provides a fabric unwinding device that adopts the following technical solution:

[0008] The cam is a device for unwinding a material from a base, the cam being adapted to move the material around when the base is in a state of being moved relative to the base, the cam being adapted to move the material around when the base is in a state of being moved relative to the base.

[0009] By adopting the above technical scheme, when the cloth is unrolled, one end is wound on the unwinding roller, and the other end is wound on the winding roller after passing through the processing component. The unwinding roller rotates to unwind the cloth, and the winding roller rotates to wind the cloth. When the cloth is unrolled, due to the material of the cloth, wrinkles of varying degrees will appear on the surface of the cloth. At this time, the bidirectional threaded belt is driven to rotate by the rotating roller, and the wrinkles will be pushed to move to both sides during the rotation of the bidirectional threaded belt. Then, the flattened cloth is clamped by the first clamping plate and the second clamping plate to reduce the occurrence of cloth rebound. The first clamping plate and the second clamping plate are driven to move by the rotating component to transport the flattened cloth to the processing component, so that the cloth can be cut more evenly and the tensile deformation of the cloth can be reduced. In addition, since the wrinkles are pushed from the middle position of the cloth to both sides, the flattening effect of the cloth is better.

[0010] Optionally, the frame is provided with a first clamping assembly and a second clamping assembly for clamping and transporting the cloth, a flattening area is provided between the first clamping assembly and the second clamping assembly, the cloth in the flattening area is in a relaxed state, and the first flattening assembly is arranged in the flattening area.

[0011] By adopting the above technical solution, when the elastic fabric is flattened, since the first flattening component is in the flattening area and the fabric in the flattening area is in a relaxed state, the fabric is not in a taut state along the length direction at this time, and then when the rotating roller drives the bidirectional threaded belt to rotate, the fabric can be better flattened. Since the fabric is in a relaxed state, it is more labor-saving to flatten it compared to the fabric in a taut state, thereby reducing the stretching deformation of the fabric.

[0012] Optionally, the first clamping assembly includes two first clamping rollers rotatably connected to the frame, the cloth is arranged between the two first clamping rollers, and the first clamping rollers abut against the surface of the cloth; the second clamping assembly includes two second clamping rollers rotatably connected to the frame, the cloth is arranged between the two second clamping rollers, and the second clamping rollers abut against the surface of the cloth.

[0013] By adopting the above technical solution, the two first clamping rollers and the two second clamping rollers clamp the cloth, and then the two first clamping rollers and the two second clamping rollers rotate to transport the cloth, and then the cloth in the flattening area is always kept in a relaxed state.

[0014] Optionally, the rotating assembly includes a mounting plate arranged on the frame, a plurality of mounting rollers rotatably connected to the mounting plate, and a rotating belt wound around the mounting rollers, and the plurality of clamping assemblies are arranged on the rotating belt, and the rotating belt drives the clamping assemblies to move along the direction of fabric conveying.

[0015] By adopting the above technical solution, the installation roller rotates to drive the rotating belt to rotate, and the rotating belt rotates to drive multiple clamping assemblies to rotate, so that the clamping assemblies and the cloth can move synchronously, thereby reducing the shrinkage of the cloth during movement.

[0016] Optionally, the pushing assembly includes a pushing spring arranged between the first clamping plate and the second clamping plate, a support plate arranged on the mounting plate, and a pushing groove opened on the support plate, the pushing spring is used to push the first clamping plate and the second clamping plate away from each other, the pushing groove includes a first groove body, a second groove body and a connecting part, the height of the first groove body is lower than the height of the second groove body, and the connecting part is used to connect the first groove body and the second groove body, and the first groove body and the second groove body are arranged in one circle along the rotation direction of the rotating belt.

[0017] By adopting the above technical solution, when the rotating belt drives the first clamping plate and the second clamping plate to move, under the action of the first groove body, the first clamping plate and the second clamping plate are brought close to each other, and the flattened cloth is clamped at this time. Then, during the conveying process of the rotating belt, the first clamping plate and the second clamping plate move from the first groove body to the second groove body. At this time, under the action of the pushing spring, the first clamping plate and the second clamping plate are pushed away from each other, so as to facilitate the separation of the cloth sent to the slitting assembly. Therefore, during the rotation of the rotating belt, under the action of multiple clamping assemblies, cyclical clamping and conveying can be achieved, which is more convenient in use.

[0018] Optionally, a fixed plate is provided on the rotating belt, the first clamping plate includes a connecting plate slidably connected to the fixed plate, a sliding rod fixed on the connecting plate, and a clamping part slidably connected to the connecting plate, the sliding direction of the clamping part is arranged perpendicular to the sliding direction of the connecting plate, and a limit spring for pushing the connecting plate to move is arranged on the connecting plate, one end of the limit spring is fixed on the clamping part, and the other end is fixed on the connecting plate.

[0019] Optionally, an abutment plate is provided on the frame, the cloth is arranged between the abutment plate and the rotating roller, and the lower surface of the cloth abuts against the abutment plate.

[0020] Optionally, a support roller and a second flattening assembly are provided on the frame, the first flattening assembly is arranged between the support roller and the second flattening assembly, and the cloth between the support roller and the second flattening assembly is arranged horizontally.

[0021] Optionally, an adjustment component is provided on the frame, and the adjustment component is used to adjust the tension of the cloth in the flattening area. The adjustment component includes an adjustment plate slidably connected to the frame and an adjustment cylinder arranged on the frame, and the two first pressing rollers are both transfer-connected to the adjustment plate.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. During the rotation of the bidirectional threaded belt, the wrinkles will be pushed to both sides, and then the flattened fabric will be clamped by the first clamping plate and the second clamping plate to reduce the rebound of the fabric and the tensile deformation of the fabric. In addition, since the fabric is pushed from the middle position to both sides, the flattening effect of the fabric is better.

[0024] 2. Since the first flattening component is in the flattening area and the fabric in the flattening area is in a relaxed state, the fabric is not in a taut state along the length direction. Then, when the rotating roller drives the bidirectional threaded belt to rotate, the fabric can be flattened better, thereby reducing the stretching deformation of the elastic fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0026] Figure 2 It is a schematic diagram of the tensioning mechanism structure of an embodiment of the present application.

[0027] Figure 3 It is a schematic diagram of the structure of the first leveling component of an embodiment of the present application.

[0028] Figure 4 It is a schematic diagram of the structure of the rotating assembly and the clamping assembly of an embodiment of the present application.

[0029] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0030] Figure 6 It is a schematic diagram of the structure of the clamping assembly of an embodiment of the present application.

[0031] Figure numerals: 01, frame; 02, unwinding roller; 03, cloth roll; 04, push-flat area; 05, inclined surface; 06, limit spring; 1, first push-flat component; 11, rotating roller; 12, two-way thread belt; 13, abutment plate; 2, clamping component; 21, fixing plate; 22, first clamping plate; 221, connecting plate; 222, sliding rod; 223, clamping part; 23, second clamping plate; 3, rotating component; 31, installation Plate; 32, mounting roller; 33, rotating belt; 4, first clamping assembly; 41, first clamping roller; 5, second clamping assembly; 51, second clamping roller; 6, pushing assembly; 61, pushing spring; 62, supporting plate; 63, pushing groove; 631, first groove body; 632, second groove body; 633, connecting part; 7, adjusting assembly; 71, adjusting plate; 73, adjusting cylinder; 8, second push-flattening assembly; 10, moving rod. DETAILED DESCRIPTION

[0032] The following combination Figure 1-Figure 6 This application is described in further detail.

[0033] The present application embodiment discloses a cloth unwinding device. Figures 1 to 6 A cloth unwinding device includes a frame 01 set on the ground and an unwinding roller 02 rotatably connected to the frame 01, a cloth roll 03 is sleeved on the unwinding roller 02, and a first flattening component 1 and a tensioning mechanism are arranged on the frame 01. The first flattening component 1 is used to push the wrinkles on the cloth from the middle to both sides, thereby achieving the purpose of flattening the cloth. At the same time, the tensioning mechanism clamps the flattened elastic cloth, and after clamping, it can move simultaneously with the cloth along the length direction of the cloth, thereby reducing the shrinkage of the flattened cloth.

[0034] Reference Figures 1 to 6 A first clamping assembly 4 and a second clamping assembly 5 are provided on the frame 01. The first clamping assembly 4 is used to pull the cloth on the unwinding roller 02 to unfold, and the second clamping assembly 5 is used to transport the unfolded and flattened cloth to the position of the processing device. In this embodiment, when the cloth is unrolled, the cloth first passes through the first clamping assembly 4 and then passes through the second clamping assembly 5. The cloth is clamped by the first clamping assembly 4 and the second clamping assembly 5. At the same time, the area between the first clamping assembly 4 and the second clamping assembly 5 is set as a flattening area. 04, the fabric in the flattening area 04 is in a relaxed state, and the first flattening component 1 is in the flattening area 04. The fabric in the flattening area 04 is flattened, and the flattened fabric is transported to the second clamping component 5 through a tensioning mechanism, and the flattened fabric is compressed by the second clamping component 5. In this embodiment, the fabric on the side of the second clamping component 5 away from the first clamping component 4 is set to a taut state, thereby reducing the retraction of the fabric after passing through the second clamping component 5, thereby making the fabric more effective when unwinding.

[0035] Reference Figures 1 to 6 The first flattening component 1 includes a rotating roller 11 rotatably connected to the frame 01 and a bidirectional threaded belt 12 fixed on the rotating roller 11. The bidirectional threaded belt 12 abuts against the surface of the cloth, and a thin layer of anti-wear paint or Teflon coating is coated on the surface of the bidirectional threaded belt 12, thereby reducing the friction between the bidirectional threaded belt 12 and the surface of the cloth. An abutment plate 13 is provided on the frame 01, and the cloth is provided between the abutment plate 13 and the rotating roller 11. The cloth in the flattening area 04 can be supported by the abutment plate 13. In other embodiments, the first flattening component 1 can be provided above and below the cloth. The two first flattening components 1 can make the wrinkled cloth flattening effect better. In addition, in this embodiment, since the cloth is pushed from the middle position to both sides, the flattening effect of the cloth can also be better.

[0036] Reference Figures 1 to 6 Since the first flattening component 1 is arranged in the flattening area 04, the fabric in this area is in a relaxed state. Compared with the taut fabric, it is not necessary to apply a large force, and it is more labor-saving when flattening, thereby reducing a certain stretching deformation of the fabric along its width direction. Specifically, when both ends of the fabric are tightened and the fabric is in a taut state, the wrinkles on the fabric are also tightened along their own length direction. At this time, when the wrinkles are pushed to move along both sides of their own width direction by the first flattening component 1, a greater pushing force is required to push the wrinkles to the edge of the fabric. In addition, it is easier to stretch and deform the elastic fabric. After the widened fabric is clamped by the second clamping assembly 5, its own thickness will become thinner, affecting subsequent processing. When the fabric is flattened in the flattening area 04, since the two ends of the fabric in the flattening area 04 are not subjected to the tensioning force, the fabric is not in a tensioned state. At this time, the wrinkles on the fabric are not subjected to the tension along the length direction of the fabric. At this time, only a very small thrust is applied along the width direction of the fabric to flatten the wrinkled fabric. Since the force during flattening is relatively small, the stretching and deformation of the fabric can be reduced.

[0037] Reference Figures 1 to 6 In the flattening area 04, a supporting roller and a second flattening component 8 are provided. The first flattening component 1 and the second flattening component 8 have the same structure. The length of the second flattening component 8 is smaller than that of the first flattening component 1. The second flattening component 8 can flatten the cloth for a second time, thereby reducing wrinkles on the cloth. Under the action of the supporting roller and the second flattening component 8, the cloth between the supporting roller and the second flattening component 8 is horizontally arranged, thereby facilitating the first flattening component 1 between the supporting roller and the second flattening component 8 to flatten the cloth.

[0038] Reference Figures 1 to 6The first clamping assembly 4 includes two first clamping rollers 41 rotatably connected to the frame 01, the cloth is arranged between the two first clamping rollers 41, and the first clamping roller 41 abuts against the surface of the cloth; the second clamping assembly 5 includes two second clamping rollers 51 rotatably connected to the frame 01, the cloth is arranged between the two second clamping rollers 51, and the second clamping roller 51 abuts against the surface of the cloth, and a driving assembly is arranged on the frame 01, the driving assembly can drive the two first clamping rollers 41 to rotate, and the driving assembly can also drive the two second clamping rollers 51 to rotate, the two first clamping rollers 41 can clamp the cloth and convey the cloth at the same time, the two second clamping rollers 51 can also clamp the cloth and convey the cloth, in this embodiment, the rotation speed of the first clamping roller 41 and the second clamping roller 51 can be adjusted according to actual needs, so as to better make the cloth in the flattening area 04 in a relaxed state. The driving assembly can be configured as a motor, and the first clamping roller 41 and the second clamping roller 51 can be driven to rotate by the motor.

[0039] Reference Figures 1 to 6 The tensioning mechanism includes a clamping assembly 2 and a rotating assembly 3. The clamping assembly 2 is used to clamp the flattened cloth to reduce the occurrence of cloth shrinkage. The rotating assembly 3 includes a mounting plate 31 arranged on the frame 01 and a mounting roller 32 rotatably connected to the frame 01, and a rotating belt 33 wound around multiple mounting rollers 32. In this embodiment, four mounting rollers 32 are arranged, and one of the mounting rollers 32 is connected to a motor. The motor is arranged on the frame 01, and the mounting roller 32 is driven to rotate by the motor, and then the rotating belt 33 is driven to rotate by the mounting roller 32. The clamping assembly 2 is arranged on the rotating belt 33. In this embodiment, multiple clamping assemblies 2 are arranged, and multiple clamping assemblies 2 are evenly arranged along the rotation direction of the rotating belt 33.

[0040] Reference Figures 1 to 6The clamping assembly 2 includes a fixed plate 21 arranged on a rotating belt 33 and a first clamping plate 22 and a second clamping plate 23 arranged on the fixed plate 21. The first clamping plate 22 and the second clamping plate 23 are arranged in parallel and spaced apart, and the flattened cloth is between the first clamping plate 22 and the second clamping plate 23. A pushing assembly 6 is arranged on the mounting plate 31. The pushing assembly 6 is used to push the first clamping plate 22 and the second clamping plate 23 to move closer to or away from each other. When the cloth is flattened, the pushing assembly 6 pushes the first clamping plate 22 and the second clamping plate 23 to move closer to each other, thereby clamping the cloth. Then, the rotating belt 33 is rotated to rotate the first clamping plate 22 and the second clamping plate 23 to move with the cloth at the same time. The material moves and is finally conveyed to the position of the second clamping component 5 of the conveyor belt. The second clamping component 5 continues to clamp the flattened fabric, and then the pushing component 6 pushes the first clamping plate 22 and the second clamping plate 23 away from each other. At this time, the first clamping plate 22 and the second clamping plate 23 no longer clamp the fabric close to the second clamping component 5. As the rotating belt 33 rotates, the first clamping plate 22 and the second clamping plate 23 that are away from each other rotate to a position close to the first flattening component 1. At this time, the pushing component 6 pushes the first clamping plate 22 and the second clamping plate 23 close to each other and continues to clamp the flattened fabric, thereby reducing the occurrence of retraction of the flattened fabric during transportation.

[0041] Reference Figures 1 to 6 The first clamping plate 22 includes a connecting plate 221 slidably connected to the fixed plate 21, a sliding rod 222 fixed to the connecting plate 221, and a clamping portion 223 slidably connected to the connecting plate 221. The connecting plate 221 is fixedly mounted with a moving rod 10, which is passed through the fixed plate 21 and slidably connected to the fixed plate 21. The sliding rod 222 is slidably connected to the supporting plate 62. The sliding direction of the clamping portion 223 is perpendicular to the sliding direction of the connecting plate 221. In this embodiment, the clamping portion 223 slides on the connecting plate 221 along the width direction of the cloth. When the first clamping plate 22 and the second clamping plate 23 do not need to clamp the cloth, the pushing assembly 6 pushes the connecting plate 221 to slide and connect to the fixed plate 21 in the vertical direction. Under the action of the moving rod 10, the two clamping portions 223 move away from each other, thereby making the first clamping plate 22 and the second clamping plate 23 more stable when moving.

[0042] Reference Figures 1 to 6A limit spring 06 is provided on the connecting plate 221 for pushing the clamping part 223 to move away from the fixed plate 21. One end of the limit spring 06 is fixed on the clamping part 223, and the other end is fixed on the connecting plate 221. When the rotating belt 33 drives the first clamping plate 22 and the second clamping plate 23 to move toward the second clamping assembly 5, the limit spring 06 is at a natural length. Then, when the first clamping plate 22 and the second clamping plate 23 are in an inclined state on the rotating belt 33, the two clamping parts 223 are in a clamping state on the cloth, and the connecting plate 221 slides on the clamping part 223. At this time, the first clamping plate 22 and the second clamping plate 23 are still in a state of clamping the cloth. Then, after the first clamping plate 22 and the second clamping plate 23 are separated from the cloth, the limit spring 06 pushes the connecting plate 221 to reset. In this embodiment, the second clamping plate 23 has the same structure as the first clamping plate 22. Here, the specific structure of the second clamping plate 23 is not described in detail.

[0043] Reference Figures 1 to 6 The pushing assembly 6 includes a pushing spring 61 arranged between the first clamping plate 22 and the second clamping plate 23, a supporting plate 62 arranged on the mounting plate 31, and a pushing groove 63 opened on the supporting plate 62. The supporting plate 62 is arranged along the rotation direction of the rotating belt 33. The pushing groove 63 includes a first groove body 631, a second groove body 632 and a connecting portion 633. Both ends of the first groove body 631 are connected to the connecting portion 633, and both ends of the second groove body 632 are also connected to the two connecting portions 633. The first groove body 631, the connecting portion 633, the second groove body 632, and the connecting portion 633 are connected end to end to form an annular structure along the rotation direction of the rotating belt 33, and the sliding rod 222 It is slidably connected in the pushing groove 63 along the vertical direction. In this embodiment, the connecting part 633 is provided with an inclined surface 05, and the height of the first groove body 631 is lower than the height of the second groove body 632, so as to facilitate the sliding rod 222 in the first groove body 631 to move into the second groove body 632, and also facilitate the sliding rod 222 in the second groove body 632 to move into the first groove body 631; when the two sliding rods 222 are both in the first groove body 631, the first clamping plate 22 and the second clamping plate 23 are close to each other to clamp the flattened cloth; when the two sliding rods 222 are both in the second groove body 632, the first clamping plate 22 and the second clamping plate 23 are away from each other, and the flattened cloth is no longer clamped.

[0044] Reference Figures 1 to 6When the rotating belt 33 drives the first clamping plate 22 and the second clamping plate 23 to move, under the action of the first groove 631, the first clamping plate 22 and the second clamping plate 23 are brought close to each other, and the pushing spring 61 is in a compressed state. At this time, the flattened cloth is clamped, and then during the conveying process of the rotating belt 33, the first clamping plate 22 and the second clamping plate 23 move from the first groove 631 to the second groove 632. At this time, under the action of the pushing spring 61, the first clamping plate 22 and the second clamping plate 23 are pushed away from each other, so as to facilitate the separation of the cloth sent to the second clamping assembly 5. Therefore, during the rotation of the rotating belt 33, under the action of multiple clamping assemblies 2, reciprocating clamping and conveying can be achieved, which is more convenient in use.

[0045] Reference Figures 1 to 6 , an adjusting component 7 is provided on the frame 01, and the adjusting component 7 is used to adjust the tension of the cloth in the flattening area 04. The adjusting component 7 includes an adjusting plate 71 slidably connected to the frame 01 and an adjusting cylinder 73 provided on the frame 01. The two first clamping rollers 41 are both transfer-connected to the adjusting plate 71. In this embodiment, two adjusting components 7 are provided, and the two adjusting components 7 are provided at both ends of the first clamping roller 41. The cylinder body of the adjusting cylinder 73 is fixed on the frame 01, and the piston rod is fixed on the adjusting plate 71. The adjusting cylinder 73 works to drive the adjusting plate 71 to move, and then the two first clamping rollers 41 are driven to move simultaneously through the adjusting plate 71, and then the tension of the cloth in the flattening area 04 can be adjusted through the movement of the two first clamping rollers 41, so that the cloth in the flattening area 04 can be kept in a relaxed state. In order to facilitate the monitoring of the tension of the cloth in the flattening area 04, a tension sensor and a controller are arranged on the frame 01, and the adjusting cylinder 73 is connected to the controller. When the tension sensor detects that the tension of the cloth in the flattening area 04 becomes larger, the adjusting cylinder 73 drives the two first clamping rollers 41 to move, and then the cloth in the flattening area 04 can always be kept in a relaxed state.

[0046] The implementation principle of a fabric unwinding device in the embodiment of the present application is as follows: when unwinding the elastic fabric, firstly, the fabric roll 03 is sleeved on the unwinding roller 02, and then one end of the fabric is passed through the first clamping roller 41, the first flattening component 1 and the second clamping roller 51 in sequence, and finally enters the processing device. The fabric between the second clamping roller 51 and the processing device is in a taut state, thereby reducing the retraction of the flattened elastic fabric. The fabric is transported to the flattening area 04 through the first clamping component 4, and then the second clamping component 5 in the flattening area 04 is tightened. The cloth is transported to the processing device, and the cloth in the flattening area 04 is in a relaxed state. The rotating roller 11 drives the bidirectional threaded belt 12 to rotate, pushing the wrinkles on the cloth to move to both sides. After being flattened, it is clamped and fixed by the first clamping plate 22 and the second clamping plate 23. Finally, the first clamping plate 22 and the second clamping plate 23 are driven to move by the rotating component 3 to transport the flattened cloth to the second clamping component 5. When the rotating belt 33 rotates, the pushed cloth can be transported to the second clamping component 5, thereby reducing the retraction of the pushed cloth.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cloth unwinding device, comprising a frame and an unwinding roller arranged on the frame, wherein a cloth roll is arranged on the unwinding roller, characterized in that: The frame is provided with a first flattening assembly for flattening the unwound fabric, and the frame is also provided with a tensioning mechanism for tightening the flattened fabric, the first flattening assembly includes a rotating roller rotatably connected to the frame and a bidirectional threaded belt fixed on the rotating roller, the surface of the bidirectional threaded belt abuts against the surface of the fabric, the tensioning mechanism includes a plurality of clamping assemblies and a rotating assembly for driving the clamping assemblies and the fabric to move simultaneously, the clamping assembly includes a first clamping plate and a second clamping plate arranged on the rotating assembly, and the frame is provided with a pushing assembly for pushing the first clamping plate and the second clamping plate away from or close to each other; The rotating assembly includes a mounting plate arranged on the frame, a plurality of mounting rollers rotatably connected to the mounting plate, and a rotating belt wound around the mounting rollers, a plurality of the clamping assemblies are arranged on the rotating belt, and the rotating belt drives the clamping assemblies to move along the direction of fabric conveying; The pushing assembly includes a pushing spring arranged between the first clamping plate and the second clamping plate, a supporting plate arranged on the mounting plate, and a pushing groove opened on the supporting plate, wherein the pushing spring is used to push the first clamping plate and the second clamping plate away from each other, and the pushing groove includes a first groove body, a second groove body and a connecting portion, wherein the connecting portion is provided with an inclined surface, wherein the height of the first groove body is lower than the height of the second groove body, and the connecting portion is used to connect the first groove body and the second groove body, and the first groove body and the second groove body are arranged in a circle along the direction of rotation of the rotating belt; The frame is provided with a first clamping assembly and a second clamping assembly for clamping and conveying the cloth, a flattening area is provided between the first clamping assembly and the second clamping assembly, the cloth in the flattening area is in a relaxed state, and the first flattening assembly is provided in the flattening area; The cam is provided with a fixed plate, the first clamping plate comprising a connecting plate slidably connected to the fixed plate, a sliding rod fixed to the connecting plate and a clamping part slidably connected to the connecting plate, the sliding direction of the clamping part and the sliding direction of the connecting plate are arranged perpendicularly, and a limit spring for pushing the connecting plate to move is arranged on the connecting plate, one end of the limit spring is fixed on the clamping part, and the other end is fixed on the connecting plate; when the rotating belt drives the first clamping plate and the second clamping plate to move in the direction approaching the second clamping assembly, the limit spring is at a natural length, and then when the first clamping plate and the second clamping plate are in an inclined state on the rotating belt, since the two clamping parts are in a clamping state on the cloth, the connecting plate slides on the clamping part, at this time, the first clamping plate and the second clamping plate are still in the state of clamping the cloth, and then after the first clamping plate and the second clamping plate are separated from the cloth, the limit spring pushes the connecting plate to reset.

2. The cloth unwinding device according to claim 1, characterized in that: The first clamping assembly includes two first clamping rollers rotatably connected to the frame, the cloth is arranged between the two first clamping rollers, and the first clamping rollers abut against the surface of the cloth; the second clamping assembly includes two second clamping rollers rotatably connected to the frame, the cloth is arranged between the two second clamping rollers, and the second clamping rollers abut against the surface of the cloth.

3. The cloth unwinding device according to claim 1, characterized in that: The frame is provided with an abutment plate, the cloth is arranged between the abutment plate and the rotating roller, and the lower surface of the cloth abuts on the abutment plate.

4. The cloth unwinding device according to claim 3, characterized in that: The frame is provided with a supporting roller and a second pushing assembly, the first pushing assembly is arranged between the supporting roller and the second pushing assembly, and the cloth between the supporting roller and the second pushing assembly is arranged horizontally.

5. The cloth unwinding device according to claim 2, characterized in that: The frame is provided with an adjustment component, which is used to adjust the tension of the cloth in the flattening area. The adjustment component includes an adjustment plate slidably connected to the frame and an adjustment cylinder arranged on the frame. The two first clamping rollers are both transfer-connected to the adjustment plate.

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