A wrinkle-proof positioning double-stage reverse cloth stretching machine

Abstract

The present invention relates to the field of cloth pulling, and discloses a wrinkle-proof positioning double-stage reverse cloth pulling machine, comprising a cloth pulling bed, on which a forward cloth pulling frame and a reverse cloth pulling frame are movably installed, the forward cloth pulling frame pulls the cloth in a direction away from the cloth roll through a first clamping member to complete the first stage of cloth pulling action; the first clamping member can rotate, so that the cloth end follows the rotation to the direction opposite to the second clamping member, and after the second clamping member clamps the end of the cloth on the first clamping member, the reverse cloth pulling frame pulls the cloth in a direction close to the cloth roll through the second clamping member to obtain overlapping cloth; the reverse cloth pulling frame is provided with a pressing block on the surface facing the cloth, and the pressing block presses down against the surface of the cloth and presses the cloth on the cloth pulling bed. In the present invention, after the cloth undergoes two forward and reverse cloth pulling processes, the overlapping cloth is formed, and the overlapping cloth is fixed, and during the cutting process, the overlapping area will not be affected by the stress release of the cutting position of the cloth.

Description

Technical Field

[0001] The invention relates to the technical field of cloth pulling, and in particular to an anti-wrinkle positioning double-stage reverse cloth pulling machine. Background Art

[0002] The cloth pulling machine is mainly used to convert the rolled materials into a multi-layer flat state after the flexible materials are produced and transported in rolls, so as to facilitate cutting and use. The cloth pulling machine usually includes a cloth feeding device, a cloth cutting device and a cloth pulling device. The cloth pulling device clamps the end of the cloth on the cloth feeding device and pulls it to the workbench. After pulling is completed, the cloth is cut by the cloth cutting device.

[0003] In the cloth pulling process, the cloth pulling device moves back and forth on the workbench, pulling the cloth once each time it moves back and forth, and at the same time adding a piece of cloth cut by the cloth cutting device to the workbench.

[0004] The cloth cutting device is usually installed on one side of the cloth feeding device. The cloth pulling device always keeps the end of the cloth in a clamped state during the cloth cutting process. After the cloth is cut, due to the material properties of the cloth, stress is released at the cutting position of the cloth, causing the end of the cut cloth to shrink instantly and the entire cloth to deform and wrinkle. The deformed cloth is not flat, and its edges and corners deviate from the ideal flat position. Summary of the invention

[0005] To this end, the present invention provides an anti-wrinkle positioning double-stage reverse cloth pulling machine, which effectively solves the technical problems in the prior art that the cloth pulling method releases stress at the cutting position of the cloth, causing the ends of the cut cloth pieces to shrink instantly and the entire cloth piece to deform, the deformed cloth piece has poor flatness, and its edges and corners deviate from the ideal flat position.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: a wrinkle-proof positioning double-stage reverse cloth-pulling machine, comprising a cloth-pulling bed, on which a cloth roll is installed, cloth is pulled out from the cloth roll, and a pair of cloth-breaking clamping plates for clamping the ends of the cloth are arranged in the pulling direction of the cloth;

[0007] A forward cloth pulling frame and a reverse cloth pulling frame are movably installed on the cloth pulling bed, and the forward cloth pulling frame and the reverse cloth pulling frame can move along the pulling direction of the cloth;

[0008] The forward cloth-pulling frame is provided with a first clamping member, and the reverse cloth-pulling frame is provided with a second clamping member, and both the first clamping member and the second clamping member can clamp the end of the cloth;

[0009] After the first clamping member clamps the end of the cloth on the broken cloth clamping plate, the broken cloth clamping plate is released, and the forward cloth pulling frame pulls the cloth in a direction away from the cloth roll through the first clamping member to complete the first section of the cloth pulling action;

[0010] The first clamping member can rotate by itself so that the end of the cloth follows and rotates to the direction opposite to the second clamping member. After the second clamping member clamps the end of the cloth on the first clamping member, the first clamping member is released, and the reverse cloth pulling frame pulls the cloth in the direction close to the cloth roll through the second clamping member to complete the second section of cloth pulling action and obtain the cloth in an overlapping state.

[0011] The reverse cloth-pulling frame is provided with a pressing block on the surface of the cloth, and the pressing block presses down against the surface of the cloth and presses the cloth onto the cloth-pulling bed, so as to form a fixed cloth surface between the forward cloth-pulling frame and the reverse cloth-pulling frame;

[0012] The cloth-breaking clamping plate is provided with a shearing piece, and the shearing piece shears the cloth along the width direction of the cloth.

[0013] Furthermore, a plurality of clamping grooves are provided on the two cloth-breaking clamping plates, and the sizes of the clamping grooves are consistent and the positions of the clamping grooves correspond one to one.

[0014] Furthermore, the reverse cloth pulling frame includes a side frame body and a cross frame body;

[0015] The side frame bodies are connected to both ends of the cross frame body, a first driving cylinder is installed on the cross frame body, a sliding cross frame is slidably installed between the side frame bodies, and the sliding cross frame is connected to the driving shaft end of the first driving cylinder;

[0016] The pressing block is installed at the bottom of the sliding cross frame.

[0017] Further, the first clamping member includes a self-rotating seat installed on the forward cloth stretching frame, and a shaft installed on the self-rotating seat;

[0018] A plurality of clamping rollers are installed on the shaft, a connecting rod is installed on the rotation seat at a position directly opposite to the shaft, and a clamping protrusion is provided on the connecting rod at a position directly opposite to the clamping roller;

[0019] A micro cylinder is installed on the rotating seat, and the driving shaft end of the micro cylinder is connected to the connecting rod. The micro cylinder is driven to drive the connecting rod to move, so that the clamping protrusion and the clamping roller are clamped or loosened;

[0020] A first drive motor is connected to the outer side of the rotating seat, and the first drive motor is installed on the forward cloth drawing frame. The driving shaft end of the first drive motor is connected to the rotating seat, and the first drive motor is driven to drive the rotating seat to rotate.

[0021] Further, the clamping roller is located opposite to the clamping groove, and the length of the clamping roller is smaller than the length of the clamping groove.

[0022] Further, the second clamping member comprises a second driving cylinder mounted on the sliding cross frame, a mounting plate mounted on the end of the second driving cylinder, and a clamping piece rotatably mounted in the mounting plate;

[0023] The clamping piece is rotatably mounted in the mounting plate via a connecting shaft, a gear is sleeved on the connecting shaft, an output shaft of the second driving cylinder is connected to a gear rod, the gear rod is meshed with the gear, and the driving of the second driving cylinder can drive the gear rod to move, thereby driving the gear to rotate, so that the clamping piece rotates to clamp or release.

[0024] Furthermore, inner tracks and outer tracks are provided on both sides of the cloth-pulling bed, the outer track is provided on a side of the inner track away from the cloth-pulling bed, the forward cloth-pulling frame is movably mounted on the inner track, and the reverse cloth-pulling frame is slidably mounted on the outer track;

[0025] The inner track and the outer track are both provided with a belt transmission device, and the belt transmission device comprises a transmission sprocket and a chain;

[0026] Among them, the chain is engaged with the teeth on the transmission sprocket, and the chain is respectively connected to the forward cloth pulling rack and the reverse cloth pulling rack. The rotation of the transmission sprocket drives the chain to move, thereby driving the forward cloth pulling rack and the reverse cloth pulling rack to move along the direction of the chain.

[0027] Furthermore, one of the cloth-breaking clamping plates away from the shearing piece exceeds the position of the other cloth-breaking clamping plate along the cloth pulling direction.

[0028] Further, the shearing member comprises a slide rail, a slide frame slidably mounted on the slide rail, and a shearing piece mounted on the slide frame;

[0029] The shearing piece is connected to a second driving motor via a shaft, and the second driving motor is mounted on the sliding bracket;

[0030] Wherein, a hydraulic cylinder is installed on the slide rail, and a driving shaft of the hydraulic cylinder is connected to one of the broken cloth clamping plates to drive the broken cloth clamping plates to clamp or loosen.

[0031] Furthermore, a cloth cutting workbench is installed on the cloth pulling bed, and the cloth roll is installed on the cloth cutting workbench;

[0032] A plurality of conveying rollers are installed on the cloth cutting workbench, and the cloth is pulled to the cloth cutting clamping plate through the plurality of conveying rollers.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] In the present invention, two structures for driving cloth pulling are designed respectively: a forward cloth pulling rack and a reverse cloth pulling rack. The forward cloth pulling rack can drive the cloth end portion to pull the cloth in the direction away from the cloth roll, and the reverse cloth pulling rack drives the cloth end portion to pull the cloth in the direction close to the cloth roll. After the cloth goes through the two forward and reverse cloth pulling processes, overlapping cloth is formed, and the overlapping cloth is fixed. The overlapping area of ​​the cloth is limited. During the cutting process, the overlapping area will not be affected by the stress release at the cutting position of the cloth, thereby avoiding overall deformation of the cloth, further improving the flatness of the cloth, and avoiding deviations in the corner positions of the cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0036] Figure 1 A schematic structural diagram of an anti-wrinkle positioning double-stage reverse cloth stretching machine provided in an embodiment of the present invention;

[0037] Figure 2 A schematic structural diagram of another perspective of a wrinkle-proof positioning double-stage reverse cloth stretching machine provided by an embodiment of the present invention;

[0038] Figure 3 A schematic side view of the structure of a wrinkle-proof positioning double-stage reverse cloth stretching machine provided by an embodiment of the present invention;

[0039] Figure 4 It is a structural schematic diagram of a cloth-breaking clamping plate, a forward cloth-pulling frame, and a reverse cloth-pulling frame in an embodiment of the present invention;

[0040] Figure 5 for Figure 4 A side view structural schematic diagram of;

[0041] Figure 6 It is a structural schematic diagram of a cloth cutting clamping plate and a shearing piece according to an embodiment of the present invention;

[0042] Figure 7It is a structural schematic diagram of the reverse cloth pulling frame and the second clamping member in an embodiment of the present invention;

[0043] Figure 8 It is a structural schematic diagram of a forward cloth drawing frame and a first clamping member in an embodiment of the present invention;

[0044] Fig. 9 for Figure 8 A is a schematic diagram of the enlarged structure of the middle part;

[0045] Fig.10 is a schematic structural diagram of a second clamping member in an embodiment of the present invention;

[0046] Fig.11 It is a schematic diagram of the structure of the positive cloth pulling frame pulling the cloth end in an embodiment of the present invention;

[0047] Fig.12 for Fig.11 The structural diagram of the first section of the cloth drawing process is completed;

[0048] Fig.13 for Fig.12 A schematic diagram of the structure in which the first clamping member rotates 180°;

[0049] Fig.14 for Fig.13 A schematic diagram of the structure in which the second clamping member is shifted to face the cloth end portion on the first clamping member;

[0050] Fig.15 for Fig.14 A schematic diagram of the structure in which the second clamping member pulls the end of the cloth and completes the second stage of the cloth pulling process;

[0051] Fig.16 for Fig.15 A schematic diagram of the structure of the middle pressing block pressing down the cloth surface;

[0052] Fig.17 for Fig.16 A schematic diagram of the structure of the second clamping member releasing the clamping action on the cloth end.

[0053] The numbers in the figure represent the following:

[0054] 1. Fabric pulling bed; 2. Fabric roll; 3. Fabric cutting clamping plate; 4. Forward fabric pulling frame; 5. Reverse fabric pulling frame; 6. First clamping piece; 7. Second clamping piece; 8. Pressing block; 9. Shearing piece; 10. Clamping groove; 11. Inner track; 12. Outer track; 13. Belt transmission device; 14. Hydraulic cylinder; 15. Fabric cutting workbench; 16. Conveying roller;

[0055] 51. side frame; 52. cross frame; 53. first drive cylinder; 54. sliding cross frame;

[0056] 61. Rotating seat; 62. Shaft; 63. Clamping roller; 64. Connecting rod; 65. Clamping protrusion; 66. Micro cylinder; 67. First driving motor;

[0057] 71. second driving cylinder; 72. mounting plate; 73. clamping sheet; 74. connecting shaft; 75. gear; 76. gear rod;

[0058] 91. Slide rail; 92. Slide rack; 93. Shearing piece; 94. Second driving motor;

[0059] 131. Drive sprocket; 132. Chain. DETAILED DESCRIPTION

[0060] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0061] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the present invention provides an anti-wrinkle positioning double-stage reverse cloth-pulling machine, comprising a cloth-pulling bed 1, on which cloth pieces cut after each cloth-pulling can be placed.

[0062] A cloth roll 2 is installed on the cloth-pulling bed 1. The cloth roll 2 is generally detachably installed on the cloth-pulling bed 1. When the cloth on the old cloth roll 2 is exhausted, a new cloth roll 2 needs to be installed.

[0063] Cloth is pulled out from the cloth roll 2, and a pair of cloth-breaking clamping plates 3 are provided in the pulling direction of the cloth to clamp the ends of the cloth. The cloth-breaking clamping plates 3 are a pair of structures that can be loosened or clamped. When the cloth-breaking clamping plates 3 are loosened, the cloth can be pulled to move, and when the cloth-breaking clamping plates 3 are clamped, the cloth is clamped and fixed and cannot move.

[0064] The present invention adopts two-directional cloth pulling processes to perform cloth pulling actions, so as to obtain overlapping cloth. Specifically, a forward cloth pulling frame 4 and a reverse cloth pulling frame 5 are movably installed on the cloth pulling bed 1, and the forward cloth pulling frame 4 and the reverse cloth pulling frame 5 can move along the pulling direction of the cloth;

[0065] A first clamping member 6 is installed on the forward cloth pulling frame 4, and a second clamping member 7 is installed on the reverse cloth pulling frame 5. Both the first clamping member 6 and the second clamping member 7 can clamp the ends of the cloth.

[0066] After the first clamping member 6 clamps the end of the cloth on the cloth-breaking clamping plate 3, the cloth-breaking clamping plate 3 is released, and the forward cloth-pulling frame 4 pulls the cloth away from the cloth roll 2 through the first clamping member 6 to complete the first section of the cloth-pulling action;

[0067] The first clamping member 6 can rotate by itself so that the end of the cloth follows and rotates to the direction opposite to the second clamping member 7. After the second clamping member 7 clamps the end of the cloth on the first clamping member 6, the first clamping member 6 is released, and the reverse cloth pulling frame 5 pulls the cloth in the direction close to the cloth roll 2 through the second clamping member 7 to complete the second section of the cloth pulling action and obtain the cloth in an overlapping state.

[0068] In order to position the overlapping cloth, the present invention makes the following design: Figure 7 As shown, a pressing block 8 is provided on the surface of the reverse cloth pulling frame 5 facing the cloth, and the pressing block 8 presses down against the surface of the cloth and presses the cloth onto the cloth pulling bed 1 to form a fixed cloth surface between the forward cloth pulling frame 4 and the reverse cloth pulling frame 5.

[0069] A shearing piece 9 is mounted on the cloth-breaking clamping plate 3 , and the shearing piece 9 shears the cloth along the width direction of the cloth. After the overlapping cloth is fixed, the shearing piece 9 shears the end of the cloth.

[0070] In the present invention, two structures for driving cloth pulling are designed respectively: a forward cloth pulling frame 4 and a reverse cloth pulling frame 5. The forward cloth pulling frame 4 can drive the cloth end portion to pull the cloth in a direction away from the cloth roll 2, and the reverse cloth pulling frame 5 can drive the cloth end portion to pull the cloth in a direction close to the cloth roll 2. After the cloth goes through the two forward and reverse cloth pulling processes, overlapping cloth is formed, and the overlapping cloth is fixed. The overlapping area of ​​the cloth is limited. During the cutting process, the overlapping area will not be affected by the stress release at the cutting position of the cloth, thereby avoiding overall deformation of the cloth, further improving the flatness of the cloth, and avoiding deviations in the corner positions of the cloth.

[0071] Due to the material characteristics of the cloth, if the cloth end is far away from the cloth-breaking clamping plate 3, the cloth away from the cloth-breaking clamping plate 3 will fall down, the position is uncertain, and it is not convenient to clamp. In order to ensure the stability of the cloth end, the cloth end is usually clamped directly between the cloth-breaking clamping plates 3. In order to further allow the first clamping member 6 to clamp the end of the cloth, the present invention makes the following design, such as Figure 4 As shown, a plurality of clamping grooves 10 are formed on the two cloth-breaking clamping plates 3, and the sizes of the clamping grooves 10 are consistent and the positions of the clamping grooves 10 correspond one to one.

[0072] The first clamping member 6 can clamp the end of the cloth at the position of the clamping groove 10 to facilitate the subsequent pulling action. The design of the clamping groove 10 not only ensures the fixing effect of the cloth end at the cloth breaking clamping plate 3, but also ensures that the cloth end can be easily clamped and led out.

[0073] In addition, the present invention also has the following design: the plate body of one of the cloth-breaking clamping plates 3 away from the shearing piece 9 is beyond the position of the plate body of the other cloth-breaking clamping plate 3 along the cloth pulling direction.

[0074] As an embodiment of the present invention, the cloth-breaking clamping plate 3 at the bottom exceeds the position of the cloth-breaking clamping plate 3 at the top along the pulling direction of the cloth. The cloth-breaking clamping plate 3 at the exceeding part can support the end of part of the cloth to prevent it from falling downward, thereby forming a straight end of the cloth to facilitate the clamping of the first clamping member 6.

[0075] In the present invention, Figure 4 As shown, the forward cloth pulling frame 4 is generally composed of two side slides, and the first clamping member 6 is installed on the two side slides. Specifically:

[0076] like Figure 8 and Fig. 9 As shown, the first clamping member 6 includes a self-rotating seat 61 installed on the forward cloth stretching frame 4 and a shaft 62 installed on the self-rotating seat 61;

[0077] A plurality of clamping rollers 63 are mounted on the shaft 62, a connecting rod 64 is mounted on the rotating seat 61 at a position opposite to the shaft 62, and a clamping protrusion 65 is arranged on the connecting rod 64 at a position opposite to the clamping rollers 63;

[0078] A micro cylinder 66 is mounted on the rotating seat 61, and the driving shaft end of the micro cylinder 66 is connected to the connecting rod 64. The micro cylinder 66 is driven to drive the connecting rod 64 to move, so that the clamping protrusion 65 and the clamping roller 63 are clamped or loosened.

[0079] A first drive motor 67 is connected to the outer side of the rotating seat 61 . The first drive motor 67 is installed on the forward cloth stretching frame 4 . The driving shaft end of the first drive motor 67 is connected to the rotating seat 61 . The first drive motor 67 is driven to drive the rotating seat 61 to rotate.

[0080] As an embodiment of the present invention, in the initial state, the connecting rod 64 is installed directly below the clamping roller 63, and the clamping roller 63 can penetrate into the clamping groove 10 to clamp the end of the cloth, and in this process, the connecting rod 64 never interferes with the broken cloth clamping plate 3. At most, the connecting rod 64 contacts the surface of the broken cloth clamping plate 3 when the clamping roller 63 and the clamping protrusion 65 clamp the end of the cloth.

[0081] In the initial state, the clamping protrusion 65 is away from the clamping roller 63. After the clamping roller 63 enters the clamping groove 10, the end of the cloth enters between the clamping roller 63 and the clamping protrusion 65, and the micro cylinder 66 is driven to drive the connecting rod 64 to move, so that the end of the cloth is gradually clamped between the clamping protrusion 65 and the clamping roller 63 to fix the end of the cloth. After that, the fixation of the end of the cloth by the cloth breaking clamping plate 3 is released, and the end of the cloth can be driven to move away from the end of the cloth roll 2 through the forward cloth pulling frame 4.

[0082] After the first pulling process is completed, the first drive motor 67 is driven to drive the rotating seat 61 to rotate, thereby driving the end of the cloth to move around the outer half of the clamping roller 63, rotating from the bottom of the clamping roller 63 to the top of the clamping roller 63. At this time, the clamping protrusion 65 is also rotated to the top of the clamping roller 63, and the end of the cloth is covered on the roller surface of about 1 / 2 of the outer circumference of the clamping roller 63. At this time, the end of the cloth between adjacent clamping rollers 63 is in a suspended state (non-clamped state), and the second clamping member 7 can clamp this part of the cloth surface.

[0083] To ensure that the clamping roller 63 can penetrate into the clamping groove 10 to clamp the end of the cloth, the present invention makes the following design: the clamping roller 63 is located opposite to the clamping groove 10, and the length of the clamping roller 63 is less than the length of the clamping groove 10.

[0084] The present invention uses the reverse cloth pulling frame 5 to pull the cloth end portion in the opposite direction to the first cloth pulling direction. The reverse cloth pulling frame 5 in the present invention adopts the following preferred embodiments, such as Figure 7 As shown, the reverse cloth drawing frame 5 includes a side frame body 51 and a cross frame body 52;

[0085] The side frame bodies 51 are connected to both ends of the cross frame body 52, and a first driving cylinder 53 is installed on the cross frame body 52. ​​A sliding cross frame 54 is slidably installed between the side frame bodies 51, and the sliding cross frame 54 is connected to the driving shaft end of the first driving cylinder 53;

[0086] The pressing block 8 is installed at the bottom of the sliding cross frame 54.

[0087] In the above embodiment, the first driving cylinder 53 can drive the sliding cross frame 54 to a height position between the side frame bodies 51. The adjustment of the vertical height position of the sliding cross frame 54 can not only drive the pressing block 8 to press down on the cloth surface, but also drive the adjustment of the position of the second clamping member 7 in the height direction to adapt to the height position of the cloth end.

[0088] In the present invention, the second clamping member 7 adopts the following preferred embodiments, such as Figure 7 and Fig.10As shown, the second clamping member 7 includes a second driving cylinder 71 mounted on the sliding cross frame 54, a mounting plate 72 mounted on the end of the second driving cylinder 71, and a clamping piece 73 rotatably mounted in the mounting plate 72;

[0089] The clamping piece 73 is rotatably mounted in the mounting plate 72 via a connecting shaft 74, on which a gear 75 is sleeved. The output shaft of the second driving cylinder 71 is connected to a gear rod 76, which meshes with the gear 75. The driving of the second driving cylinder 71 can drive the gear rod 76 to move, thereby driving the gear 75 to rotate, so that the clamping piece 73 rotates to clamp or release.

[0090] In the above embodiments, it is assumed that the clamping piece 73 is initially expanded outward and is in a loosened state. When the end of the cloth needs to be clamped, the second driving cylinder 71 is driven to drive the gear rod 76 to move, thereby driving the gear 75 to rotate, so that the clamping piece 73 rotates inward to clamp the end of the cloth.

[0091] Since both the forward cloth-pulling frame 4 and the reverse cloth-pulling frame 5 can move along the length direction of the cloth-pulling bed 1, and the forward cloth-pulling frame 4 can pass through the reverse cloth-pulling frame 5 to perform the first section of the cloth-pulling process, in order to avoid interference between the forward cloth-pulling frame 4 and the reverse cloth-pulling frame 5 and to realize the back-and-forth movement of the forward cloth-pulling frame 4 and the reverse cloth-pulling frame 5, the present invention makes the following design, such as Figure 1 and Figure 2 As shown, inner rails 11 and outer rails 12 are provided on both sides of the cloth-pulling bed 1. The outer rail 12 is provided on the side of the inner rail 11 away from the cloth-pulling bed 1. The forward cloth-pulling frame 4 is movably mounted on the inner rail 11, and the reverse cloth-pulling frame 5 is slidably mounted on the outer rail 12.

[0092] A belt transmission device 13 is installed in both the inner track 11 and the outer track 12. The belt transmission device 13 includes a transmission sprocket 131 and a chain 132.

[0093] Among them, the chain 132 is meshed with the teeth on the transmission sprocket 131, and the chain 132 is respectively connected to the forward cloth pulling rack 4 and the reverse cloth pulling rack 5. The rotation of the transmission sprocket 131 drives the chain 132 to move, thereby driving the forward cloth pulling rack 4 and the reverse cloth pulling rack 5 to move along the direction of the chain 132.

[0094] In the above embodiments, the belt transmission device can drive the forward cloth-pulling frame 4 to slide in the inner track 11 , and the belt transmission device 13 can drive the reverse cloth-pulling frame 5 to slide in the outer track 12 .

[0095] Among them, the sliding seats on both sides of the forward cloth pulling frame 4 can directly pass through the bottom of the sliding cross frame 54 and the side frame body 51 without colliding with the sliding cross frame 54 and the side frame body 51. Specifically, when the forward cloth pulling frame 4 moves close to the side of the broken cloth clamping plate 3, the first driving cylinder 53 can drive the sliding cross frame 54 to move upward, thereby further avoiding collision.

[0096] In the present invention, the cloth on the cloth-cutting clamping plate 3 is cut by the shearing piece 9. The shearing piece 9 of the present invention adopts the following preferred embodiments, such as Figure 6 As shown, the shearing piece 9 includes a slide rail 91, a slide 92 slidably mounted on the slide rail 91, and a shearing piece 93 mounted on the slide 92. The shearing piece 93 is connected to a second drive motor 94 via an axis, and the second drive motor 94 is mounted on the slide 92. During the shearing process, the second drive motor 94 can remain in a normally open state, driving the shearing piece 93 to rotate, and then through the sliding movement of the slide 92, the shearing piece 93 is driven to saw the surface of the cloth.

[0097] The sliding movement of the slide 92 on the slide rail 91 can also be achieved by the belt transmission device 13, and the belt rotating device drives the slide 92 to move.

[0098] In addition, in order to drive one of the cloth-breaking clamping plates 3 to move up and down, a hydraulic cylinder 14 is installed on the slide rail 91, and the driving shaft of the hydraulic cylinder 14 is connected to one of the cloth-breaking clamping plates 3 to drive the cloth-breaking clamping plates 3 to be clamped or loosened.

[0099] In the present invention, a cloth cutting workbench 15 is installed on the cloth pulling bed 1, and the cloth roll 2 is installed on the cloth cutting workbench 15;

[0100] A plurality of conveying rollers 16 are installed on the cloth cutting workbench 15 , and the cloth is pulled to the cloth cutting clamping plate 3 through the plurality of conveying rollers 16 .

[0101] In summary, the main implementation process of the present invention is:

[0102] In the initial state, the cloth end is clamped between the cloth-breaking clamping plates 3;

[0103] The forward cloth pulling frame 4 moves along the cloth pulling bed 1 toward the cloth breaking clamping plate 3 until the clamping roller 63 enters the clamping groove 10, and the cloth end is between the clamping roller 63 and the clamping protrusion 65. The micro cylinder 66 is driven to drive the connecting rod 64 to move, so that the end of the cloth is gradually clamped between the clamping protrusion 65 and the clamping roller 63, thereby fixing the end of the cloth;

[0104] The hydraulic cylinder 14 drives one of the cloth-breaking clamping plates 3 to move, so as to release the fixing of the cloth-breaking clamping plate 3 to the end of the cloth. Fig.11 and Fig.12As shown, the belt drive device 13 drives the end of the cloth to move away from the end of the cloth roll 2 through the forward cloth drawing frame 4 until the first section of the cloth drawing process is completed;

[0105] After the first cloth drawing process is completed, Fig.13 As shown, the first drive motor 67 is driven to drive the self-rotating seat 61 to rotate, driving the end of the cloth to move around the outer half of the clamping roller 63, and the end of the cloth is covered on the roller surface of about 1 / 2 of the outer circumference of the clamping roller 63;

[0106] Adjust the height position of the second clamping member 7 to face the cloth end portion on the clamping roller 63, such as Fig.14 As shown, the reverse cloth pulling frame moves close to the forward cloth pulling frame 4 until the cloth end is between the clamping pieces 73, and the second driving cylinder 71 drives the gear rod 76 to move, so as to drive the gear 75 to rotate, so that the clamping piece 73 rotates inward to clamp the end of the cloth;

[0107] like Fig.15 As shown, the belt transmission device 13 drives the second clamping member 7 to pull the cloth in the direction close to the cloth roll 2 through the reverse cloth pulling frame 5, so as to complete the second section of cloth pulling action and obtain the cloth in an overlapping state;

[0108] At this time, the first driving cylinder 53 is driven, as shown in FIG. Fig.16 As shown, the pressing block 8 is driven by the sliding cross frame 54 to press down against the surface of the cloth and press the cloth onto the cloth-pulling bed 1 or onto the cloth already existing on the cloth-pulling bed 1;

[0109] The overlapping parts of the fabric are fixed, e.g. Fig.17 As shown, the shearing member 9 is driven to shear the cloth on the broken cloth clamping plate 3;

[0110] After the cutting is completed, the cut end of the fabric will fall down under the action of gravity and lay flat on the fabric bed 1;

[0111] When the second clamping member 7 releases the clamping action on the cloth end, the cloth end in the overlapping part of the cloth will also fall on the cloth surface below under the action of gravity, driving the forward cloth pulling frame 4 to move backward, and can pull the entire piece of cloth to be gradually spread flat on the cloth pulling bed 1, and then drive the pressing block 8 to move upward to release the positioning of the entire cloth.

[0112] In the above process, after the second clamping member 7 has adjusted its position, the pressing block 8 is likely to be pressed against the surface of the cloth, causing the cloth to be pulled. To avoid the cloth being pulled during this process, the forward cloth pulling frame 4 can be designed as a liftable frame structure. After the cloth end moves around the outer half of the clamping roller 63, the height of the clamping roller 63 is adjusted so that the cloth end is facing the second clamping member 7, which is convenient for the subsequent alignment and clamping of the second clamping member 7.

[0113] In the present invention, after completing the two-stage cloth-drawing process, the smaller the distance between the reverse cloth-drawing frame 5 and the cloth-breaking clamping plate 3 is, the larger the cloth area of ​​the overlapping part is, and the better the fixing effect of the whole cloth is.

[0114] In addition, in the prior art, the cloth between the cloth pulling end and the cloth cutting position is longer, and a greater stress release will be generated under the action of the gravity of the entire cloth. In the present invention, the shorter the cloth length between the reverse cloth pulling frame 5 and the cloth breaking clamping plate 3, the shorter the distance between the cloth positioning position and the cloth cutting position, which can effectively avoid the cloth cutting position being affected by the gravity of a large area of ​​cloth, resulting in a large deformation during the stress release process, and the shorter the distance between the cloth positioning position and the cloth cutting position, the less likely the cloth between the positioning position and the cloth cutting position is to be deformed by the stress release, which further avoids the deformation and wrinkling of the cloth and improves the flatness of the cloth.

[0115] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A wrinkle-proof positioning double-stage reverse cloth stretching machine, characterized in that: It comprises a cloth pulling bed (1), on which a cloth roll (2) is mounted, cloth is pulled out from the cloth roll (2), and a pair of cloth breaking clamping plates (3) for clamping ends of the cloth are provided in the pulling direction of the cloth; A forward cloth pulling frame (4) and a reverse cloth pulling frame (5) are movably mounted on the cloth pulling bed (1), and the forward cloth pulling frame (4) and the reverse cloth pulling frame (5) are both movable along the cloth pulling direction; The forward cloth pulling frame (4) is provided with a first clamping member (6), and the reverse cloth pulling frame (5) is provided with a second clamping member (7), and both the first clamping member (6) and the second clamping member (7) are capable of clamping the ends of the cloth; After the first clamping member (6) clamps the end of the cloth on the cloth-breaking clamping plate (3), the cloth-breaking clamping plate (3) is released, and the forward cloth-pulling frame (4) pulls the cloth in a direction away from the cloth roll (2) through the first clamping member (6), thereby completing the first stage of the cloth-pulling action; The first clamping member (6) is capable of self-rotation, so that the end of the cloth follows the rotation to a direction opposite to the second clamping member (7); after the second clamping member (7) clamps the end of the cloth on the first clamping member (6), the first clamping member (6) is released, and the reverse cloth pulling frame (5) pulls the cloth in a direction close to the cloth roll (2) through the second clamping member (7), so as to complete the second section of cloth pulling action and obtain the cloth in an overlapping state; The reverse cloth-pulling frame (5) is provided with a pressing block (8) on the surface facing the cloth, and the pressing block (8) presses down against the surface of the cloth and presses the cloth onto the cloth-pulling bed (1), so as to form a fixed cloth surface between the forward cloth-pulling frame (4) and the reverse cloth-pulling frame (5); A shearing piece (9) is mounted on the cloth-breaking clamping plate (3), and the shearing piece (9) shears the cloth along the width direction of the cloth; After the cutting is completed, the cut end of the fabric will fall down under the action of gravity and lay flat on the fabric bed (1); When the second clamping member (7) releases the clamping action on the cloth end, the cloth end in the overlapping portion of the cloth will also fall onto the cloth surface below under the action of gravity, driving the forward cloth pulling frame (4) to move backward, pulling the entire piece of cloth to be gradually spread on the cloth pulling bed (1), and then driving the pressing block (8) to move upward to release the positioning of the entire cloth.

2. The wrinkle-proof positioning double-stage reverse cloth stretching machine according to claim 1, characterized in that: A plurality of clamping grooves (10) are provided on both of the two cloth-breaking clamping plates (3), and the sizes of the clamping grooves (10) are consistent and the positions of the clamping grooves (10) correspond one to one.

3. The wrinkle-proof positioning double-stage reverse cloth stretching machine according to claim 1, characterized in that: The reverse cloth pulling frame (5) comprises a side frame body (51) and a cross frame body (52); The side frame bodies (51) are connected to both ends of the cross frame body (52), a first driving cylinder (53) is installed on the cross frame body (52), a sliding cross frame (54) is slidably installed between the side frame bodies (51), and the sliding cross frame (54) is connected to the driving shaft end of the first driving cylinder (53); The pressing block (8) is installed at the bottom of the sliding cross frame (54).

4. The wrinkle-proof positioning double-stage reverse cloth stretching machine according to claim 2, characterized in that: The first clamping member (6) comprises a self-rotating seat (61) mounted on the forward cloth pulling frame (4), and a shaft (62) mounted on the self-rotating seat (61); A plurality of clamping rollers (63) are mounted on the shaft (62); a connecting rod (64) is mounted on the rotatable seat (61) at a position directly opposite to the shaft (62); and a clamping protrusion (65) is provided on the connecting rod (64) at a position directly opposite to the clamping rollers (63); A micro cylinder (66) is mounted on the rotating seat (61), a driving shaft end of the micro cylinder (66) is connected to the connecting rod (64), and the micro cylinder (66) is driven to drive the connecting rod (64) to move, so that the clamping protrusion (65) and the clamping roller (63) are clamped or released; A first drive motor (67) is connected to the outer side of the self-rotating seat (61). The first drive motor (67) is installed on the forward cloth pulling frame (4). The drive shaft end of the first drive motor (67) is connected to the self-rotating seat (61). The first drive motor (67) is driven to drive the self-rotating seat (61) to rotate.

5. The wrinkle-proof positioning double-stage reverse cloth stretching machine according to claim 4, characterized in that: The clamping roller (63) is located directly opposite to the clamping groove (10), and the length of the clamping roller (63) is smaller than the length of the clamping groove (10).

6. The wrinkle-proof positioning double-stage reverse cloth stretching machine according to claim 3, characterized in that: The second clamping member (7) comprises a second driving cylinder (71) mounted on the sliding cross frame (54), a mounting plate (72) mounted on the end of the second driving cylinder (71), and a clamping piece (73) rotatably mounted in the mounting plate (72); The clamping piece (73) is rotatably mounted in the mounting plate (72) via a connecting shaft (74); a gear (75) is sleeved on the connecting shaft (74); an output shaft of the second driving cylinder (71) is connected to a gear rod (76); the gear rod (76) is meshed with the gear (75); the second driving cylinder (71) can drive the gear rod (76) to move, thereby driving the gear (75) to rotate, so that the clamping piece (73) is rotated to clamp or release.

7. The wrinkle-proof positioning double-stage reverse cloth stretching machine according to claim 1, characterized in that: An inner track (11) and an outer track (12) are provided on both sides of the cloth pulling bed (1); the outer track (12) is provided on a side of the inner track (11) away from the cloth pulling bed (1); the forward cloth pulling frame (4) is movably mounted on the inner track (11); and the reverse cloth pulling frame (5) is slidably mounted on the outer track (12); A belt transmission device (13) is installed in both the inner track (11) and the outer track (12), and the belt transmission device (13) comprises a transmission sprocket (131) and a chain (132); The chain (132) is meshed with the teeth on the transmission sprocket (131), and the chain (132) is respectively connected to the forward cloth-pulling rack (4) and the reverse cloth-pulling rack (5); the transmission sprocket (131) rotates to drive the chain (132) to move, thereby driving the forward cloth-pulling rack (4) and the reverse cloth-pulling rack (5) to move along the direction of the chain (132).

8. The wrinkle-proof positioning double-stage reverse cloth stretching machine according to claim 1, characterized in that: The plate body of one of the cloth-breaking clamping plates (3) that is away from the shearing piece (9) exceeds the position of the plate body of the other cloth-breaking clamping plate (3) along the cloth pulling direction.

9. The wrinkle-proof positioning double-stage reverse cloth stretching machine according to claim 1, characterized in that: The shearing member (9) comprises a slide rail (91), a slide frame (92) slidably mounted on the slide rail (91), and a shearing piece (93) mounted on the slide frame (92); The shearing piece (93) is connected to a second driving motor (94) via a shaft, and the second driving motor (94) is mounted on the sliding frame (92); A hydraulic cylinder (14) is mounted on the slide rail (91), and a drive shaft of the hydraulic cylinder (14) is connected to one of the broken cloth clamping plates (3) to drive the broken cloth clamping plates (3) to clamp or release each other.

10. The wrinkle-proof positioning double-stage reverse cloth stretching machine according to claim 1, characterized in that: A cloth cutting workbench (15) is installed on the cloth pulling bed (1), and the cloth roll (2) is installed on the cloth cutting workbench (15); A plurality of conveying rollers (16) are installed on the cloth cutting workbench (15), and the cloth is pulled to the cloth cutting clamping plate (3) through the plurality of conveying rollers (16).

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