An automatic positioning opposite pulling type cloth stretching machine

Abstract

The present invention relates to the field of cloth pulling, and discloses an automatically positioned opposite pulling cloth pulling machine, including a machine tool, a cloth pulling frame installed on the machine tool, a clamping member installed on the cloth pulling frame, a lifting main board installed on the bed of the machine tool, the two ends of the lifting main board are movably connected with movable side plates through shafts, and the edges of the movable side plates are provided with a pushing structure, and the pushing structure applies a thrust to the ends of the movable side plates, so that the movable side plates squeeze the lifting main board inwardly, and the lifting main board is lifted upward under the squeezing action to form an arched plate surface in combination with the movable side plate, and a lifting and lowering pressing plate is installed on the side close to the cloth feeding frame. In the present invention, the cloth is pulled in a direction away from the cloth roller, and after the pulling is completed, the movable side plate squeezes the lifting main board inwardly and forms a whole arched plate surface, so that the cloth is attached to the plate surface, and the pressing plate is used to fix the cloth on the plate surface, thereby reducing the influence of stress release on the overall state of the cloth piece and improving the flatness of the cloth piece.

Description

Technical Field

[0001] The invention relates to the technical field of cloth pulling, and in particular to an automatically positioned opposite pulling type cloth pulling machine. Background Art

[0002] The cloth pulling machine is mainly used to process the rolled materials into a multi-layer flat state after the flexible materials are produced and transported in rolls, so as to facilitate subsequent cutting and use. The cloth pulling machine usually includes a cloth feeding device, a cloth cutting device and a cloth pulling device installed on a workbench. The cloth pulling device can move along the workbench, and the rolled materials are installed on the cloth feeding device. The end of the cloth is pulled out from the rolled materials and temporarily fixed on the cloth feeding device. The cloth pulling device can clamp the end of the cloth on the cloth feeding device and pull the cloth backward. After the pulling is completed, the cloth cutting device cuts the pulled cloth on one side of the cloth feeding device, and the cut cloth falls on the workbench.

[0003] In the cloth pulling process, the cloth pulling device moves back and forth on the workbench, pulling the cloth once each time, and at the same time adding a piece of cloth cut by the cloth cutting device to the workbench. By repeating the cloth pulling process multiple times, multiple layers of flat cloth can be gradually overlapped on the workbench.

[0004] Due to the material characteristics of the cloth, after the cloth is cut, stress is released at the cutting position of the cloth, and the cut end of the cloth instantly rebounds to the side of the cloth pulling device and falls on the workbench. The surface of the rebounded cloth is wrinkled. In addition, the rebounded cloth will continue to move backward for a distance before stopping after falling on the workbench. This process will generate friction on the existing cloth layer on the workbench, causing the cloth to move, making the cloth layer uneven. Summary of the invention

[0005] To this end, the present invention provides an automatically positioned opposite pulling cloth pulling machine, which effectively solves the problem in the prior art that cloth pieces are wrinkled due to stress release during the cutting process, and the rebound process of the cloth pieces affects the position of the existing cloth pieces, resulting in uneven final cloth layers.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: an automatically positioned opposite pulling type cloth drawing machine, comprising a machine tool, on which a cloth feeding frame is movably installed, on which a cloth feeding frame is installed a cloth roller, on which cloth is pulled out, and a pair of long clamping plates for clamping the ends of the cloth are installed in the pulling direction of the cloth;

[0007] A cloth pulling frame is movably installed on the machine tool and at a position opposite to the cloth feeding frame, and a clamping member is installed on the cloth pulling frame, and the clamping member can clamp the end of the cloth;

[0008] After the clamping member clamps the end of the cloth on the clamping long board, the clamping long board is released, and the cloth pulling frame and the cloth feeding frame move in opposite directions, so that the cloth pulling frame pulls the cloth in a direction away from the cloth roller through the clamping member;

[0009] A lifting main board is installed on the bed surface of the machine tool, and movable side boards are movably connected to the two ends of the lifting main board through shafts. A pushing structure is arranged on the edge of the movable side board, and the pushing structure applies a thrust to the ends of the movable side board, so that the movable side board presses the lifting main board inwardly. The lifting main board is lifted upward under the pressing action to form an arched board surface in combination with the movable side board;

[0010] A lifting and lowering pressing plate is installed on one side close to the cloth feeding frame, and the pressing plate presses down against the surface of the cloth and presses the cloth down to one of the movable side plates, so that the pulled cloth is attached and fixed on the arched plate surface;

[0011] A shearing structure is installed on the clamping long plate, and the shearing structure shears the cloth along the width direction of the cloth.

[0012] Furthermore, the height of the position where the cloth is fixed on the movable side plate is higher than the height of the position where the cloth is led out from the clamping long plate.

[0013] Furthermore, a mounting groove is provided on the machine tool, and the width of the mounting groove is greater than the width of the lifting main board and the movable side board;

[0014] The lifting main board and the movable side board are installed in the installation groove.

[0015] Furthermore, a side groove is provided on the side wall in the installation groove along the length direction, a sliding seat is slidably arranged in the side groove, and the movable side plate is movably installed on the sliding seat through a movable shaft;

[0016] The pushing structure comprises a first driving cylinder disposed in the side groove and a pushing shaft connected to the output end of the first driving cylinder;

[0017] The end of the push shaft is connected to the sliding seat, and the first driving cylinder is driven to push the sliding seat to slide in the side groove through the push shaft.

[0018] Furthermore, a connecting frame is installed on the side of the cloth feeding frame, a first hydraulic cylinder is installed on the connecting frame, and an output shaft end of the first hydraulic cylinder is connected to the pressing plate;

[0019] The pressing plate is parallel to the movable side plate in the arched state.

[0020] Furthermore, a plurality of clamping grooves are provided on the clamping long plate along the length direction, and the clamping grooves are located on the edge of the clamping long plate close to one side of the cloth stretching machine frame;

[0021] A plurality of second hydraulic cylinders are installed on the cloth feeding frame, and the driving shafts of the second hydraulic cylinders are connected to one of the clamping long plates to drive the clamping long plates to be clamped or loosened, and the other clamping long plate is fixedly installed on the cloth feeding frame.

[0022] Furthermore, a plurality of the clamping members are installed on the cloth pulling machine frame, and the clamping members correspond to the clamping grooves one by one;

[0023] The clamping member comprises a second driving cylinder mounted on the cloth pulling machine frame, a pair of side plates mounted at the ends of the second driving cylinder, and a clamping arm rotatably mounted between the side plates;

[0024] The clamping arm is rotatably mounted in the side plate via a connecting shaft;

[0025] A gear is sleeved on the connecting shaft, and the output shaft of the second driving cylinder is connected to a gear rod, which meshes with the gear. The second driving cylinder can drive the gear rod to move, thereby driving the gear to rotate, so that the clamping arm rotates to clamp or release.

[0026] Further, the first slide rail and the second slide rail are sequentially arranged on both sides of the machine tool from the inside to the outside, the cloth pulling frame is provided with an inner slide frame on the side close to the first slide rail, and the inner slide frame is slidably arranged in the first slide rail, and the cloth feeding frame and the connecting frame are connected with an outer slide frame on the side close to the second slide rail, and the outer slide frame is slidably arranged in the second slide rail;

[0027] A transmission structure is installed in each of the first slide rail and the second slide rail, and the transmission structure includes a transmission sprocket arranged in the first slide rail and the second slide rail, and a chain arranged on the transmission sprocket;

[0028] Among them, the outer side of the chain is connected to the inner sliding frame and the outer sliding frame, and the transmission sprocket is externally connected to a first driving motor. The first driving motor drives the transmission sprocket to rotate and drives the chain to move, so as to respectively drive the cloth pulling frame and the cloth feeding frame to move along the direction of the chain.

[0029] Further, the shearing structure comprises a horizontal frame mounted on the cloth feeding frame, a movable frame slidably mounted in the horizontal frame, and a saw blade mounted on the movable frame;

[0030] The saw blade is connected to a second drive motor via a shaft, and the second drive motor is mounted on the movable frame;

[0031] A belt transmission member is installed in the cross frame, and the belt transmission member includes a transmission wheel installed in the cross frame, and a transmission belt arranged on the transmission wheel. The outer side of the transmission belt is connected to the movable frame, and the transmission wheel is externally connected to a third driving motor. The third driving motor drives to drive the transmission belt to move through the transmission wheel and drive the movable frame to move along the direction of the cross frame.

[0032] Furthermore, a working frame is installed on the side of the cloth feeding frame, and the cloth roller is installed on the working frame;

[0033] A plurality of conveying rollers are installed on the working frame, and the cloth is pulled to the clamping long plate through the plurality of conveying rollers;

[0034] Wherein, the working frame is connected to the outer sliding frame and can move along the direction of the second sliding rail following the outer sliding frame.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] In the present invention, the cloth pulling machine frame pulls the cloth in a direction away from the cloth roller through the clamping member. After the pulling is completed, the movable side plate presses the lifting main plate inwardly to form a whole arched plate surface, so that the cloth is attached to the plate surface. The cloth on the plate surface is fixed by the pressing plate. Most of the cloth surface of the cloth to be sheared is completely fixed. Then the cloth is sheared, and the sheared cloth end falls on the movable side plate under the action of gravity, which greatly reduces the influence of the stress release of the cloth piece on the overall state of the cloth piece and improves the flatness of the cloth piece.

[0037] Furthermore, the fixing effect of the pressing plate simultaneously positions the existing cloth pieces on the plate surface, thereby preventing the existing cloth layer from being affected by the cloth pieces and ensuring the flatness of the cloth layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] 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.

[0039] Figure 1 A schematic structural diagram of an automatic positioning opposite pulling type cloth stretching machine provided in an embodiment of the present invention;

[0040] Figure 2 A schematic diagram of the top view of an automatic positioning opposite pulling cloth stretching machine provided by an embodiment of the present invention;

[0041] Figure 3A schematic side view of the structure of an automatic positioning opposite pulling cloth stretching machine provided by an embodiment of the present invention;

[0042] Figure 4 for Figure 2 Stereoscopic cross-sectional view along the AA axis;

[0043] Figure 5 for Figure 4 A schematic diagram of a top view structure;

[0044] Figure 6 for Figure 5 A is a schematic diagram of the enlarged structure of the middle part;

[0045] Figure 7 for Figure 5 A side view structural schematic diagram of;

[0046] Figure 8 Schematic diagram of the structure of the cloth feeding frame in the embodiment of the present invention;

[0047] Fig. 9 is a schematic structural diagram of a connecting frame in an embodiment of the present invention;

[0048] Fig.10 Schematic diagram of the structure of the cloth stretching frame in the embodiment of the present invention;

[0049] Fig.11 is a schematic structural diagram of a clamping member in an embodiment of the present invention;

[0050] Fig.12 It is a structural schematic diagram of the clamping member moving to the clamping groove position in an embodiment of the present invention;

[0051] Fig.13 for Fig.12 A schematic diagram of the structure in which the long plate is clamped in the middle and the clamping parts move in the opposite direction;

[0052] Fig.14 for Fig.13 A schematic diagram of the structure in which the lifting main board and the movable side board are arched;

[0053] Fig.15 for Fig.14 Schematic diagram of the structure of the middle pressure block pressing down the cloth surface.

[0054] The numbers in the figure represent the following:

[0055] 1. Machine tool; 2. Fabric feeding frame; 3. Fabric roller; 4. Clamping long board; 5. Fabric pulling frame; 6. Clamping piece; 7. Lifting main board; 8. Movable side board; 9. Pushing structure; 10. Pressing plate; 11. Shearing structure; 12. Mounting groove; 13. Side groove; 14. Sliding seat; 15. Movable shaft; 16. Connecting frame; 17. First hydraulic cylinder; 18. Clamping groove; 19. Second hydraulic cylinder; 20. First slide rail; 21. Second slide rail; 22. Inner slide frame; 23. Outer slide frame; 24. Transmission structure; 25. Belt transmission piece; 26. Working frame; 27. Transmission roller;

[0056] 61. second driving cylinder; 62. side plate; 63. clamping arm; 64. connecting shaft; 65. gear; 66. gear rod;

[0057] 91. First driving cylinder; 92. Push shaft;

[0058] 111, horizontal frame; 112, movable frame; 113, saw blade; 114, second drive motor;

[0059] 241, transmission sprocket; 242, chain;

[0060] 251. Transmission wheel; 252. Transmission belt; 253. Third drive motor. DETAILED DESCRIPTION

[0061] 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.

[0062] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, the present invention provides an automatically positioned opposite pulling type cloth-drawing machine, comprising a machine tool 1, which is a working place for the entire cloth-drawing process.

[0063] A cloth feeding frame 2 is movably mounted on the machine tool 1, and a cloth roller 3 is mounted on the cloth feeding frame 2. Specifically, a working frame 26 is mounted on the side of the cloth feeding frame 2, and the cloth roller 3 is mounted on the working frame 26. The cloth roller 3 is generally detachably mounted on the working frame 26. When the cloth on a cloth roller 3 is exhausted, a new cloth roller 3 is replaced to continue the corresponding cloth pulling process.

[0064] The cloth is pulled out from the cloth roller 3, and a pair of long clamping plates 4 are installed in the pulling direction of the cloth to clamp the ends of the cloth. A plurality of conveying rollers 27 are installed on the working frame 26. The cloth on the cloth roller 3 is pulled to the long clamping plates 4 through the plurality of conveying rollers 27 and is clamped and fixed.

[0065] A cloth pulling frame 5 is movably installed on the machine tool 1 and opposite to the cloth feeding frame 2. A clamping member 6 is installed on the cloth pulling frame 5. The clamping member 6 can clamp the end of the cloth.

[0066] Among them, Fig.12 , Fig.13 As shown, after the clamping member 6 clamps the end of the cloth on the clamping long plate 4, the clamping long plate 4 is released, and the cloth pulling frame 5 and the cloth feeding frame 2 move in opposite directions, so that the cloth pulling frame 5 pulls the cloth in a direction away from the cloth roller 3 through the clamping member 6.

[0067] In the present invention, the back-to-back movement of the cloth-pulling frame 5 and the cloth-feeding frame 2 is a synchronous movement, which can improve the efficiency of cloth pulling, and the distance of the back-to-back movement of the cloth-pulling frame 5 and the cloth-feeding frame 2 is approximately equal to half the length of a single piece of cloth.

[0068] A shearing structure 11 is installed on the clamping long plate 4, and the shearing structure 11 shears the cloth along the width direction of the cloth. In the present invention, the shearing structure 11 adopts the following preferred embodiments, such as Figure 8 As shown, the shearing structure 11 includes a horizontal frame 111 installed on the cloth feeding frame 2, a movable frame 112 slidably installed in the horizontal frame 111, and a saw blade 113 installed on the movable frame 112;

[0069] The saw blade 113 is connected to a second drive motor 114 via a shaft. The second drive motor 114 is installed on the movable frame 112 . The second drive motor 114 can drive the saw blade 113 to rotate at a high speed.

[0070] A belt drive member 25 is installed in the cross frame 111. Figure 8 As shown, the belt transmission member 25 includes a transmission wheel 251 installed in the horizontal frame 111, and a transmission belt 252 arranged on the transmission wheel 251. The outer side of the transmission belt 252 is connected to the movable frame 112. The transmission wheel 251 is externally connected to the third driving motor 253. The third driving motor 253 drives to drive the transmission belt 252 to move through the transmission wheel 251 and drive the movable frame 112 to move along the direction of the horizontal frame 111.

[0071] In the above embodiments, in the process of driving the movable frame 112 to move on the horizontal frame 111 , the saw blade 113 rotates at a high speed to shear the cloth on the clamped long board 4 .

[0072] To prevent the cloth from rebounding and shrinking under the action of gravity after cutting, Fig.14As shown, the present invention has a lifting main board 7 installed on the bed surface of the machine tool 1, and the two ends of the lifting main board 7 are movably connected with movable side plates 8 through shafts. The edges of the movable side plates 8 are provided with a pushing structure 9. In addition, a lifting and lowering pressing plate 10 is installed on the side close to the cloth feeding frame 2. The pressing plate 10 presses down against the surface of the cloth and presses the cloth down to one of the movable side plates 8, so that the pulled cloth is attached and fixed on the arched plate surface.

[0073] In the present invention, the cloth is pulled by the cloth pulling frame 5 through the clamping member 6 in the direction away from the cloth roller 3. After the pulling is completed, the movable side plate 8 presses the lifting main plate 7 inwardly to form an entire arched plate surface, so that the cloth is attached to the plate surface, and the pressing plate 10 is used to fix the cloth on the plate surface. Most of the cloth surface to be sheared is completely fixed, and then the cloth is sheared. The sheared cloth end falls on the movable side plate 8 under the action of gravity, which greatly reduces the influence of the stress release of the cloth piece on the overall state of the cloth piece and improves the flatness of the cloth piece.

[0074] Furthermore, the fixing function of the pressing plate 10 simultaneously positions the existing cloth sheets on the plate surface, thereby preventing the existing cloth sheet layer from being affected by the cloth sheet and ensuring the flatness of the cloth sheet layer.

[0075] In the prior art, the cloth is not only affected by stress release after cutting, but also by gravity. Under the dual effects of stress release and gravity, the cut end of the cloth piece instantly and rapidly shrinks and rebounds toward the center of gravity of the cloth piece to form wrinkles. In this regard, the present invention fixes the cloth by arching and positioning the cloth. The fixed cloth portion is completely unaffected by stress, while the small portion of the cloth that is not fixed is less affected by stress. Specifically, the height of the position where the cloth is fixed on the movable side plate 8 is higher than the height of the position where the cloth is led out from the clamping long plate 4. That is to say, the cloth is in an oblique upward state from the cutting position to the fixed position on the movable side plate 8.

[0076] Assuming that the cloth between the cutting position and the fixed position on the movable side plate 8 is defined as the unfixed cloth area, and the cloth between the fixed position on the movable side plate 8 and the clamping position of the clamping member 6 is defined as the fixed cloth area, then in the fixed cloth area, the cloth is completely fixed and will not be affected by the stress release after cutting and gravity;

[0077] like Fig.15 As shown, in the unfixed cloth area, one end is fixed by the pressing plate 10 and the other end is supported on the clamping long plate 4, and the unfixed cloth area is in an inclined upward state. In this state, the cut end of the cloth is subjected to the oblique upward stress of the fixed end, and the unfixed cloth area as a whole is subjected to the downward gravity. In the process of stress release, under the action of stress, the unfixed cloth area has a tendency to move obliquely upward, and the downward gravity resists the stress release process, preventing the unfixed cloth area from moving obliquely upward.

[0078] After cutting is completed, there is a certain stress between the clamping end of the fixed cloth area and the cloth on the lifting main board 7. The position of the clamping end can be adjusted to make the clamping member 6 close to the lifting main board 7. The cloth between the clamping end of the fixed cloth area and the lifting main board 7 will bend slightly downward. After the stress is reduced, the clamping action is directly released, and the cloth can fall directly onto the movable side panel 8 below under the action of gravity.

[0079] Finally, the pressing plate 10 is driven to move upward, the pressure of the pressing plate 10 on the cloth is released, and the lifting main plate 7 and the movable side plate 8 are restored to a horizontal state, so that a flat and wrinkle-free cloth layer is obtained.

[0080] To install the lifting main board 7 and the movable side board 8, Figure 4 and Figure 5 As shown, a mounting groove 12 is provided on the machine tool 1 , the width of the mounting groove 12 is greater than the width of the lifting main board 7 and the movable side board 8 , and the lifting main board 7 and the movable side board 8 are installed in the mounting groove 12 .

[0081] When the lifting main board 7 and the movable side plate 8 are in a horizontal state, the lifting main board 7 and the movable side plate 8 are basically completely placed in the installation groove 12. When the lifting main board 7 and the movable side plate 8 are in an arched state, the lifting main board 7 and the movable side plate 8 are separated from the installation groove 12 and lifted upward, gradually forming an arch bridge shape.

[0082] The lifting main plate 7 and the movable side plate 8 are set to be in an arch bridge shape, so as to make the clamping end of the cloth in a suspended state to avoid interference between the clamping member 6 and the cloth piece.

[0083] Under the extrusion of the movable side plate 8, the lifting main plate 7 can rise and arch. In order to drive the extrusion action of the movable side plate 8 to the lifting main plate 7, the present invention makes the following design, such as Figure 4 As shown, a side groove 13 is provided on the side wall of the installation groove 12 along the length direction, a sliding seat 14 is slidably provided in the side groove 13, and the movable side plate 8 is movably installed on the sliding seat 14 through a movable shaft 15;

[0084] The pushing structure 9 applies a thrust to the end of the movable side plate 8, so that the movable side plate 8 presses the lifting main plate 7 inwardly, and the lifting main plate 7 is lifted upward under the pressing effect to form an arched plate surface in combination with the movable side plate 8. The pushing structure 9 specifically adopts the following preferred embodiments, such as Figure 4 , Figure 5 and Figure 6 As shown, the pushing structure 9 includes a first driving cylinder 91 arranged in the side groove 13 and a pushing shaft 92 connected to the output end of the first driving cylinder 91; the end of the pushing shaft 92 is connected to the sliding seat 14, and the first driving cylinder 91 drives to push the sliding seat 14 to slide in the side groove 13 through the pushing shaft 92.

[0085] In the above embodiments, the push shaft 92 applies a pushing force to the sliding seat 14 to push the movable side plate 8, and the movable side plate 8 can only rotate inwards under the force.

[0086] In the present invention, the first hydraulic cylinder 17 can be raised and lowered. To achieve its lifting function, Fig. 9 As shown, a connecting frame 16 is installed on the side of the cloth feeding frame 2, and a first hydraulic cylinder 17 is installed on the connecting frame 16. The output shaft end of the first hydraulic cylinder 17 is connected to the pressing plate 10, and the pressing plate 10 is parallel to the movable side plate 8 in the arched state.

[0087] The first hydraulic cylinder 17 is driven to drive the pressing plate 10 to descend and fit against the surface of the cloth. The pressing plate 10 is designed to be liftable to avoid the pressing plate 10 being too low and causing obstruction to the cloth feeding frame 2. When the pressing plate 10 is in a higher position, the cloth pulling frame 5 can pass through the bottom of the pressing plate 10 and approach the clamping long plate 4 to clamp the end of the cloth.

[0088] In order to facilitate the clamping of the end of the cloth by the clamping member 6, as shown in FIG. Figure 8 As shown, a plurality of clamping grooves 18 are provided on the clamping long plate 4 along the length direction, and the clamping grooves 18 are located on the edge of the clamping long plate 4 close to one side of the cloth drawing frame 5;

[0089] A plurality of second hydraulic cylinders 19 are installed on the cloth feeding frame 2 , and the driving shaft of the second hydraulic cylinder 19 is connected to one of the clamping long plates 4 to drive the clamping long plates 4 to be clamped or loosened, and the other clamping long plate 4 is fixedly installed on the cloth feeding frame 2 .

[0090] When the clamping long board 4 is pressed tightly, a clamping force is generated on the end of the cloth. When the second hydraulic cylinder 19 drives the clamping long board 4 to move upward, the two clamping long boards 4 move away from each other and no clamping force is generated on the cloth. At this time, the cloth can move through the clamping long board 4.

[0091] After the clamping member 6 clamps the end of the cloth, the clamping long plates 4 are released to facilitate the cloth pulling process.

[0092] A plurality of clamping members 6 are mounted on the cloth pulling machine frame 5, and the clamping members 6 correspond to the clamping grooves 18 one by one;

[0093] like Fig.10 and Fig.11 As shown, the clamping member 6 includes a second driving cylinder 61 installed on the cloth pulling frame 5, a pair of side plates 62 installed at the ends of the second driving cylinder 61, and a clamping arm 63 rotatably installed between the side plates 62;

[0094] The clamping arm 63 is rotatably installed in the side plate 62 through a connecting shaft 64, and a gear 65 is sleeved on the connecting shaft 64. The output shaft of the second driving cylinder 61 is connected to a gear rod 66, and the gear rod 66 is meshed with the gear 65. The driving of the second driving cylinder 61 can drive the gear rod 66 to move, thereby driving the gear 65 to rotate, so that the clamping arm 63 rotates to clamp or release.

[0095] When the clamping member 6 follows the cloth-pulling frame 5 to move into the clamping groove 18, the clamping arm 63 is driven by the second driving cylinder 61 to clamp the end of the cloth in the clamping groove 18, and the clamping long plate 4 is gradually loosened. The cloth-pulling frame 5 moves, driving the clamping member 6 and the end of the cloth to move backward, thereby realizing the cloth-pulling process.

[0096] In order to avoid interference between the connecting frame 16 and the cloth drawing frame 5, the present invention makes the following design, such as Figure 1 , Figure 8 , Fig.10 As shown, the first slide rail 20 and the second slide rail 21 are sequentially arranged on both sides of the machine tool 1 from the inside to the outside, and an inner slide frame 22 is arranged on the side of the cloth pulling frame 5 close to the first slide rail 20, and the inner slide frame 22 is slidably arranged in the first slide rail 20, and the cloth feeding frame 2 and the connecting frame 16 are connected to the side close to the second slide rail 21 with an outer slide frame 23, and the outer slide frame 23 is slidably arranged in the second slide rail 21.

[0097] In order to drive the cloth feeding frame 2 and the connecting frame 16 to move on the second slide rail 21 and the cloth pulling frame 5 to move on the first slide rail 20, the present invention makes the following design, such as Figure 3 As shown, a transmission structure 24 is installed in the first slide rail 20 and the second slide rail 21. The transmission structure 24 includes a transmission sprocket 241 arranged in the first slide rail 20 and the second slide rail 21, and a chain 242 arranged on the transmission sprocket 241;

[0098] Among them, the outer side of the chain 242 is connected to the inner sliding frame 22 and the outer sliding frame 23, and the transmission sprocket 241 is externally connected to the first driving motor. The first driving motor drives the transmission sprocket 241 to rotate and drive the chain 242 to move, so as to drive the cloth pulling frame 5 and the cloth feeding frame 2 to move along the direction of the chain 242 respectively.

[0099] Among them, the working frame 26 is connected to the outer sliding frame 23, and can follow the outer sliding frame 23 to move in the direction of the second slide rail 21. The movement states of the working frame 26, the connecting frame 16, and the cloth feeding frame 2 are consistent. During the cloth pulling process, the working frame 26, the connecting frame 16, and the cloth feeding frame 2 move together in a direction away from the cloth pulling frame 5.

[0100] 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. An automatic positioning opposite pulling type cloth stretching machine, characterized in that: The invention comprises a machine tool (1), on which a cloth feeding frame (2) is movably mounted, a cloth roller (3) is mounted on the cloth feeding frame (2), cloth is pulled out from the cloth roller (3), and a pair of long clamping plates (4) are mounted in the pulling direction of the cloth to clamp the ends of the cloth; A cloth pulling frame (5) is movably mounted on the machine tool (1) and in a position opposite to the cloth feeding frame (2), and a clamping member (6) is mounted on the cloth pulling frame (5), and the clamping member (6) is capable of clamping the end of the cloth; After the clamping member (6) clamps the end of the cloth on the clamping long plate (4), the clamping long plate (4) is released, and the cloth pulling frame (5) and the cloth feeding frame (2) move in opposite directions, so that the cloth pulling frame (5) pulls the cloth in a direction away from the cloth roller (3) through the clamping member (6); A lifting main board (7) is installed on the bed surface of the machine tool (1); both ends of the lifting main board (7) are movably connected to movable side boards (8) via shafts; a pushing structure (9) is provided on the edge of the movable side board (8); the pushing structure (9) applies a thrust to the ends of the movable side boards (8), so that the movable side boards (8) press the lifting main board (7) inwardly; the lifting main board (7) is lifted upward under the pressing action, so as to form an arched board surface in combination with the movable side boards (8); A lifting and lowering pressing plate (10) is installed on one side close to the cloth feeding frame (2), and the pressing plate (10) presses down against the surface of the cloth and presses the cloth down onto one of the movable side plates (8), so that the pulled cloth is attached and fixed to the arched plate surface; A shearing structure (11) is installed on the long clamping plate (4), and the shearing structure (11) shears the cloth along the width direction of the cloth.

2. The automatic positioning opposite pulling type cloth stretching machine according to claim 1, characterized in that: The height of the position where the cloth is fixed on the movable side plate (8) is higher than the height of the position where the cloth is led out from the clamping long plate (4).

3. The automatic positioning opposite pulling type cloth stretching machine according to claim 1, characterized in that: The machine tool (1) is provided with a mounting groove (12), and the width of the mounting groove (12) is greater than the width of the lifting main plate (7) and the movable side plate (8); The lifting main board (7) and the movable side board (8) are installed in the installation groove (12).

4. The automatic positioning opposite pulling type cloth stretching machine according to claim 3, characterized in that: A side groove (13) is provided on the side wall of the installation groove (12) along the length direction, a sliding seat (14) is slidably arranged in the side groove (13), and the movable side plate (8) is movably mounted on the sliding seat (14) via a movable shaft (15); The pushing structure (9) comprises a first driving cylinder (91) arranged in the side groove (13) and a pushing shaft (92) connected to the output end of the first driving cylinder (91); The end of the push shaft (92) is connected to the sliding seat (14), and the first driving cylinder (91) is driven to push the sliding seat (14) to slide in the side groove (13) through the push shaft (92).

5. The automatic positioning opposite pulling type cloth stretching machine according to claim 1, characterized in that: A connecting frame (16) is installed on the side of the cloth feeding frame (2), a first hydraulic cylinder (17) is installed on the connecting frame (16), and an output shaft end of the first hydraulic cylinder (17) is connected to the pressing plate (10); The pressing plate (10) is parallel to the movable side plate (8) in the arched state.

6. The automatic positioning opposite pulling type cloth stretching machine according to claim 1, characterized in that: A plurality of clamping grooves (18) are provided on the clamping long plate (4) along the length direction, and the clamping grooves (18) are located on the edge of the clamping long plate (4) close to the cloth pulling machine frame (5); A plurality of second hydraulic cylinders (19) are mounted on the cloth feeding frame (2); a driving shaft of the second hydraulic cylinder (19) is connected to one of the clamping long plates (4) to drive the clamping long plates (4) to be clamped or loosened; and another clamping long plate (4) is fixedly mounted on the cloth feeding frame (2).

7. The automatic positioning opposite pulling type cloth stretching machine according to claim 6, characterized in that: A plurality of the clamping members (6) are mounted on the cloth pulling machine frame (5), and the clamping members (6) correspond one to one to the clamping grooves (18); The clamping member (6) comprises a second driving cylinder (61) mounted on the cloth pulling machine frame (5), a pair of side plates (62) mounted at the ends of the second driving cylinder (61), and a clamping arm (63) rotatably mounted between the side plates (62); The clamping arm (63) is rotatably mounted in the side plate (62) via a connecting shaft (64); A gear (65) is sleeved on the connecting shaft (64), and the output shaft of the second driving cylinder (61) is connected to a gear rod (66), and the gear rod (66) is meshed with the gear (65). The second driving cylinder (61) can drive the gear rod (66) to move, thereby driving the gear (65) to rotate, so that the clamping arm (63) rotates to clamp or release.

8. The automatic positioning opposite pulling type cloth stretching machine according to claim 5, characterized in that: The two sides of the machine tool (1) are provided with a first slide rail (20) and a second slide rail (21) in sequence from the inside to the outside; the cloth pulling frame (5) is provided with an inner slide frame (22) on the side close to the first slide rail (20); the inner slide frame (22) is slidably arranged in the first slide rail (20); the cloth feeding frame (2) and the connecting frame (16) are connected with an outer slide frame (23) on the side close to the second slide rail (21); the outer slide frame (23) is slidably arranged in the second slide rail (21); A transmission structure (24) is installed in both the first slide rail (20) and the second slide rail (21), and the transmission structure (24) comprises a transmission sprocket (241) arranged in the first slide rail (20) and the second slide rail (21), and a chain (242) arranged on the transmission sprocket (241); The outer side of the chain (242) is connected to the inner sliding frame (22) and the outer sliding frame (23); the transmission sprocket (241) is externally connected to a first driving motor; the first driving motor drives the transmission sprocket (241) to rotate and drives the chain (242) to move, thereby respectively driving the cloth pulling frame (5) and the cloth feeding frame (2) to move along the direction of the chain (242).

9. The automatic positioning opposite pulling type cloth stretching machine according to claim 1, characterized in that: The shearing structure (11) comprises a horizontal frame (111) mounted on the cloth feeding frame (2), a movable frame (112) slidably mounted in the horizontal frame (111), and a saw blade (113) mounted on the movable frame (112); The saw blade (113) is connected to a second drive motor (114) via a shaft, and the second drive motor (114) is mounted on the movable frame (112); A belt transmission member (25) is installed in the horizontal frame (111), and the belt transmission member (25) comprises a transmission wheel (251) installed in the horizontal frame (111), and a transmission belt (252) arranged on the transmission wheel (251); the transmission belt (252) is connected to the movable frame (112) on the outside; the transmission wheel (251) is externally connected to a third driving motor (253); the third driving motor (253) is driven to drive the transmission belt (252) to move through the transmission wheel (251) and drive the movable frame (112) to move along the direction of the horizontal frame (111).

10. The automatic positioning opposite pulling type cloth stretching machine according to claim 8, characterized in that: A working frame (26) is installed on the side of the cloth feeding frame (2), and the cloth roller (3) is installed on the working frame (26); A plurality of conveying rollers (27) are installed on the working frame (26), and the cloth is pulled to the clamping long plate (4) through the plurality of conveying rollers; Wherein, the working frame (26) is connected to the outer sliding frame (23), and is capable of following the outer sliding frame (23) to move along the direction of the second sliding rail (21).

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