Cloth pulling device

Abstract

The invention relates to the field of spreading machines, and provides a spreading device which comprises a tiling table, a cloth mounting mechanism, a spreading mechanism, a cutting mechanism and a pressing mechanism. The cloth pulling mechanism comprises a first clamping assembly, a first driving piece, a second clamping assembly and a second driving piece. The first clamping assembly comprises a first mounting frame and two first clamping rollers, and first air bags are arranged on the peripheral sides of the first clamping rollers in a surrounding mode; the second clamping assembly comprises a second mounting frame and two second clamping rollers, and second air bags are arranged on the peripheral sides of the second clamping rollers in a surrounding mode; the hold-down mechanism comprises a third mounting frame, a hold-down cylinder and a fourth driving part, and the output end of the hold-down cylinder is used for abutting against the cloth. The device has the effect of achieving back-and-forth cloth paving while reducing energy consumption.

Description

Technical Field

[0001] The present application relates to the field of cloth-pulling machines, and in particular to a cloth-pulling device. Background Art

[0002] The cloth pulling machine, also known as the cloth spreading machine, is an auxiliary equipment of the sewing machine. Its main function is to pull the cloth and spread the rolled material into a multi-layer flat state.

[0003] There are two main types of existing cloth-pulling machines. One is that a machine body with a cloth roller is installed to move back and forth on a flat-laying table, which can realize back and forth cloth-pulling. However, the machine body is usually large in size, heavy in mass, and complex in structure. It consumes more energy when moving, and has high requirements on the quality of the track. The other is that a movable cloth-pulling mechanism is arranged on the flat-laying table. When laying the cloth, the cloth-pulling mechanism pulls the free end of the cloth from the cloth roller and moves along the flat-laying table. The overall mass and volume of the cloth-pulling mechanism are small, the energy consumption is low, and it is easy to maintain. It is also convenient to observe the flat-laying state of the cloth more intuitively during the laying process.

[0004] In summary, the present application provides a cloth-pulling device that can achieve back and forth spreading of cloth while reducing energy consumption. Summary of the invention

[0005] In order to realize back and forth spreading of cloth while reducing energy consumption, the present application provides a cloth pulling device.

[0006] The present application provides a cloth pulling device adopting the following technical solution: A cloth-pulling device comprises a flat-laying table, a cloth-installing mechanism, a cloth-pulling mechanism, a cutting mechanism and a pressing mechanism; the cloth-installing mechanism comprises a support frame and a cloth roller, the support frame is installed across the flat-laying table, the cloth roller is rotatably connected to the support frame and is located above the flat-laying table, the cloth roller is extended along the width direction of the flat-laying table and is used to roll up the cloth; the cloth-pulling mechanism comprises a first clamping assembly, a first driving member, a second clamping assembly and a second driving member; the first clamping assembly comprises a first mounting frame and two first clamping rollers, the first mounting frame is slidably connected to the flat-laying table along the length direction of the flat-laying table, the two first clamping rollers are both connected to the first mounting frame, and a first gap is formed between the two first clamping rollers through which the cloth can pass vertically; a first airbag is arranged around the circumference of the first clamping roller; the first driving member is used to drive the first mounting frame to slide relative to the flat-laying table; the second clamping assembly comprises a second mounting frame and two second clamping rollers, the second mounting frame is slidably connected to the flat-laying table along the length direction of the flat-laying table Table; the two second clamping rollers are connected to the second mounting frame, and a second gap is formed between the two second clamping rollers for the cloth to pass vertically; a second air bag is arranged around the circumference of the second clamping roller; the second driving member is used to drive the second mounting frame to slide relative to the flat table; the height of the second clamping assembly is higher than the height of the first clamping assembly; the cutting mechanism includes a cutter and a third driving member, the cutter is connected to the flat table in a sliding manner along the width direction of the flat table, and the third driving member is used to drive the cutter to slide relative to the flat table; the height of the cutter is higher than the second clamping assembly and lower than the cloth roller; the pressing mechanism includes a third mounting frame, a pressing cylinder and a fourth driving member, the third mounting frame is connected to the flat table in a sliding manner along the length direction of the flat table, the pressing cylinder is vertically installed on the third mounting frame, and the output end of the pressing cylinder is used to abut against the cloth; the fourth driving member is installed on the flat table, and the fourth driving member is used to drive the third mounting frame to slide relative to the flat table.

[0007] By adopting the above technical solution, an example is given in which a portion of the cloth has been laid flat on the flattening table and the cloth pulling mechanism pulls the cloth to the left. When the cloth pulling device is working, the first clamping assembly is first moved to a position where the free end of the cloth will hang down by the first driving member, and the second clamping assembly is moved to the top of the first clamping assembly by the second driving member, and the first airbag and the second airbag are deflated; then the cloth roller is rotated so that the free end of the cloth hangs vertically under the action of gravity and passes through the second interval and the first interval in sequence. Then, the first airbag is inflated, and the free end of the cloth is clamped by the two first airbags.

[0008] At the same time, the second airbag on the right of the two second airbags is filled with gas. Then the second driving member is started to drive the second clamping assembly to move away from the cloth roller. During the movement of the second clamping assembly, the second airbag on the right and the second clamping roller play a role of abutting and tensioning the cloth, driving the cloth to be laid flat to the left; after reaching the preset laying length of the cloth, the second airbag on the left is inflated and the second airbag on the right is deflated, and at the same time, the second driving member drives the second clamping roller to move a short distance in the opposite direction, so that the cloth is folded at the predetermined position; at the same time, the fourth driving member is started to move the third mounting frame and the holding cylinder to the predetermined position, and then the holding cylinder is started to hold the cloth at the folding position with the end of the holding cylinder.

[0009] After the cloth is pressed by the holding cylinder, the second clamping assembly is driven to continue to move toward the cloth roller. During the movement, the second airbag on the left and the second clamping roller are used to continue pulling the cloth, driving the cloth to be spread to the right, thereby achieving back and forth spreading.

[0010] When the second clamping assembly moves to the bottom of the fabric roller again, the second airbag on the right side of the second airbag is inflated again, and the fabric is clamped by the two second airbags; then the third driving member is started to drive the cutter to cut the fabric above the second clamping assembly. While cutting, the first airbag is deflated, and the first clamping assembly is driven to move a short distance to the right through the first driving member. After the end of the fabric falls from the first airbag, the first clamping assembly is driven back, and then the above process is repeated to continue pulling the fabric back and forth to spread the fabric.

[0011] During the entire cloth-pulling process, only the second clamping assembly with a simple structure and light weight slides relative to the laying table, so the energy consumption is small, maintenance is convenient, and back and forth cloth-pulling is also achieved.

[0012] In addition, if one-way spreading is required, the first driving member can also drive the first clamping assembly that clamps the cloth to move in the direction away from the cloth roller. After moving to the preset spreading length, the two second airbags are inflated, the cloth is clamped by the two second airbags, and then the flattened cloth is cut off by the cutting mechanism.

[0013] The purpose of clamping the cloth before cutting is to reduce the time difference of each point of the cloth end falling on the flattening table and improve the flattening uniformity of the cloth.

[0014] Optionally, the second clamping roller is rotatably connected to the second mounting frame, and an axis of rotation of the second clamping roller relative to the second mounting frame is colinear with a central axis of the second clamping roller.

[0015] By adopting the above technical solution, during the cloth pulling process, the friction between the cloth and the second airbag is rolling friction, which reduces the wear of the cloth and the second airbag.

[0016] Optionally, the first clamping roller is connected to the first mounting frame in a sliding manner along the height direction of the first mounting frame; the first mounting frame is provided with a first cylinder, and the first cylinder is used to drive the first clamping roller to slide along the height direction of the first mounting frame; the second clamping roller is connected to the second mounting frame in a sliding manner along the height direction of the second mounting frame; the second mounting frame is provided with a second cylinder, and the second cylinder is used to drive the second clamping roller to slide along the height direction of the second mounting frame.

[0017] By adopting the above technical solution, when the thickness of the flat cloth is relatively thick, the height of the first clamping roller is adjusted by the first cylinder, and the height of the second clamping roller is adjusted by the second cylinder to adapt to the thickness of the flat cloth, thereby improving the flexibility of use of the cloth pulling device.

[0018] Optionally, the second airbag includes a cylindrical bag skin, the second clamping roller is inserted into the bag skin, the end edge of the bag skin is fixedly connected to the end of the second clamping roller, the inner surface of the bag skin and the circumferential limit of the second clamping roller form an inner cavity of the second airbag; a first limit plate is provided on the circumferential side of the second clamping roller, and the first limit plate is extended along the length direction of the second clamping roller; the inner surface of the bag skin is connected to a first gravity plate, and the first gravity plate is extended along the length direction of the second clamping roller; a first sliding cavity is opened on the side wall of the first limit plate away from the second clamping roller, and the first sliding cavity is used to accommodate the first gravity plate; when the second airbag is filled with gas, the first limit plate abuts against the inner surface of the bag skin away from the side wall of the first clamping roller.

[0019] It can be seen from the above operation process that when the second clamping assembly moves to the left, the second airbag on the left is not filled with gas, and at this time the flexible airbag skin has a certain deformation ability. By adopting the above technical solution, when the second airbag is not filled with gas, under the gravity of the first limit plate and the first gravity plate, the part of the airbag skin connected to the first gravity plate droops and abuts against the cloth that has been laid flat on the flat table, so that the second airbag and the first gravity plate therein are used to smooth the cloth and improve the flatness of the cloth. In the process of the second clamping assembly moving to the right, the second airbag on the right and the first gravity plate therein are used to smooth the cloth that has been laid flat on the flat table and improve the flatness of the cloth.

[0020] Optionally, a plurality of second limit plates are arranged on the circumference of the second clamping roller, the second limit plates are extended along the length direction of the second clamping roller, and the plurality of second limit plates are arranged at intervals around the second clamping roller; the intervals between adjacent second limit plates are consistent, and the interval between the first limit plate and the second limit plates adjacent to the left and right is consistent with the interval between adjacent second limit plates; a second sliding cavity is opened on the side wall of the second limit plate away from the second clamping roller, and a plurality of second gravity plates are arranged on the inner surface of the bag skin, and the second sliding cavity is used to accommodate the second gravity plate; the second sliding cavity A limiting portion is provided on the cavity wall, and an abutting portion is provided on the side wall of the second gravity plate, and the limiting portion is used for abutting the abutting portion; when the second airbag is filled with gas, there is a gap between the side of the second limiting plate away from the second clamping roller and the inner surface of the bag skin, and the abutting portion abuts against the limiting portion, and the abutting portion is located between the limiting portion and the second clamping roller; the material, volume and shape of the first gravity plate and the second gravity plate are consistent, the first limiting plate and the second limiting plate are both made of aluminum alloy, and the first limiting plate and the second limiting plate are both penetrated by a number of lightweight holes.

[0021] By adopting the above technical solution, a second gravity plate is set, and the intervals between adjacent second gravity plates are made consistent, and the intervals between the first gravity plate and the second gravity plates adjacent to the left and right are made consistent, and at the same time, the material, volume, and shape of the first gravity plate and the second gravity plate are made consistent. When the second airbag is filled with gas, the second gravity plate is used to balance the gravity of the first gravity plate, so that the rotation of the second airbag after being filled with gas is relatively stable, thereby ensuring the tensioning and guiding effect of the second airbag and the second clamping roller on the cloth, and reducing the impact on the cloth pulling speed.

[0022] After the second airbag is deflated, due to the limitation of the abutment portion by the limiting portion, the second gravity plate cannot move in the direction away from the second clamping roller, but can only move in the direction close to the second clamping roller, thereby driving the position of the bag skin connected to it to move in the direction close to the second clamping roller, and then making the bag skin connected to the first gravity plate move in the direction away from the second clamping roller, the overall center of gravity of the second clamping roller changes, and the automatic drooping of the first gravity plate is achieved.

[0023] Optionally, an elastic rope is provided in the second sliding cavity, one end of the elastic rope is connected to the side of the second gravity plate close to the second clamping roller, and the other end is connected to the peripheral side of the second clamping roller; when the abutting portion abuts against the limiting portion, the elastic rope is in a stretched state; a force spring is provided in the first sliding cavity, one end of the force spring is connected to the side of the first gravity plate close to the second clamping roller, and the other end is connected to the peripheral side of the second clamping roller; when the second airbag is filled with gas, the force spring is in a compressed state.

[0024] By adopting the above technical solution, after the second airbag is deflated, the elastic rope in the second sliding cavity is used to force the second gravity plate to move toward the second clamping roller, and the force spring in the first sliding cavity is used to force the first gravity plate to move away from the second clamping roller, so as to ensure that the center of gravity of the second clamping roller can be changed quickly and the first gravity plate can be rotated quickly and stably to a drooping state.

[0025] Optionally, the cloth roller is detachably connected to the support frame.

[0026] By adopting the above technical solution, after the cloth on the cloth roller installed on the support frame is spread, the cloth roller is removed and replaced with a new cloth roller with cloth rolled up, and the replaced cloth roller is rewound using other devices, thereby ensuring the working efficiency of the cloth pulling device.

[0027] Optionally, a connecting component is provided on both sides of the left and right sides of the support frame, and the connecting component includes a connecting plate, a fixed block, an upper movable block and a lower movable block; the connecting plate is rotatably connected to the support frame, and two fixed blocks are provided, and the two fixed blocks are connected to the connecting plate, and there is a vertical gap between the two fixed blocks; two upper movable blocks are provided, and the upper movable blocks are horizontally slidingly connected to the upper part of the fixed block, and the two upper movable blocks are connected to the two fixed blocks in a one-to-one correspondence; the fixed block is provided with a first spring, and the first spring is used to force the two upper movable blocks to abut against each other; the lower movable block is provided at the lower part of the fixed block; connecting blocks are provided at both ends of the cloth roller, and the connecting blocks are rectangular parallelepiped; a space for accommodating the connecting blocks is defined between the two fixed blocks, the upper movable block and the lower movable block.

[0028] By adopting the above technical solution, when replacing the cloth roller, first apply force to the two upper movable blocks to make the two upper movable blocks move away from each other, then apply force to the cloth roller, and remove the connecting block from the two fixed blocks by the cloth roller, so as to complete the disassembly of the old cloth roller. Then, place the connecting block of the new cloth roller between the two fixed blocks, and remove the force applied to the upper movable block, so as to complete the installation of the new cloth roller. The structure is simple and easy to operate.

[0029] Optionally, two lower movable blocks are provided, and the lower movable blocks are horizontally slidably connected to the fixed blocks, and the two lower movable blocks are connected to the two fixed blocks one by one; the two ends of the two upper movable blocks away from each other are fixedly connected with a "U"-shaped connecting rod, and one end of the connecting rod away from the upper movable block is fixedly connected to the lower movable block; the two upper movable blocks are provided with guide surfaces, and when the two upper movable blocks abut against each other, the two guide surfaces form a "V" shape, and the guide surfaces are used for the connecting blocks to abut against.

[0030] By adopting the above technical solution, when replacing the cloth roller, first rotate the old cloth roller until the two fixed blocks are in a vertical state; then place the new cloth roller above the upper movable block and lower it, and under the action of the new cloth roller and the guide surface, the two upper movable blocks move away from each other; at the same time, the two upper movable blocks drive the two lower movable blocks away from each other through the connecting rod, so that the connecting block corresponding to the old cloth roller falls out from under the fixed block, so that the old cloth roller is removed while the new cloth roller is installed, thereby improving the convenience of replacement.

[0031] Optionally, the connecting plate is provided with two limit bars below the fixed block, the limit bars are in an "L" shape, and an "L"-shaped sliding groove is defined between the two limit bars; the vertical part of the sliding groove is used to receive the connecting block falling from the fixed block, and the horizontal part of the sliding groove is used for the connecting block to pass through.

[0032] By adopting the above technical solution, on the one hand, the connecting block corresponding to the old cloth roller falls into the sliding groove and stays at the corner of the "L"-shaped sliding groove, and the staff can take out the old cloth roller from the horizontal part of the sliding groove, thereby improving the convenience and safety of replacement; on the other hand, the limit strip is used to adjust the center of gravity, so that in the natural state, the fixed block is in a vertical state, so that the staff does not need to rotate the old cloth roller when replacing the cloth roller, thereby further improving the convenience of replacing the cloth roller.

[0033] In summary, the present application includes at least one of the following beneficial technical effects: By providing a first clamping assembly for clamping the end of the cloth and a second clamping assembly for tensioning and driving the cloth to move, while achieving back and forth spreading of the cloth, the structure for movement is simple, easy to maintain, and consumes less energy; By arranging a first limit plate, a first gravity plate, a second limit plate and a second gravity plate in the second airbag, while using one second airbag in the second clamping assembly to form tension, another second airbag is used to smooth the cloth that has been laid on the flattening table, thereby improving the neatness of the cloth laying; By arranging a connection component on the support frame, the old cloth roller is removed while the new cloth roller is installed, thereby ensuring the cloth pulling efficiency of the cloth pulling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0035] Figure 2 yes Figure 1 An enlarged schematic diagram in part A.

[0036] Figure 3 It is a schematic diagram for showing the structure of the cutting mechanism in Example 1.

[0037] Figure 4 It is a schematic diagram for showing the state in which the end of the cloth in Example 1 is successively lowered between the two first airbags and between the two second airbags.

[0038] Figure 5 It is a schematic diagram for showing the state when the first clamping component in Example 1 clamps the end of the cloth.

[0039] Figure 6 It is a schematic diagram for showing the state of the second clamping component in Example 1 driving the cloth to be laid flat to the left.

[0040] Figure 7 It is a schematic diagram for showing the state of the second clamping component in Example 1 when it returns and drives the cloth to be spread to the right.

[0041] Figure 8 It is a schematic diagram for showing the state of the second clamping assembly in Example 1 when it returns to under the cloth roller.

[0042] Fig. 9 It is a structural diagram of Example 2 of the present application.

[0043] Fig.10 It is a schematic diagram for showing the distribution status of the first gravity plate and the second gravity plate in Example 2.

[0044] Fig.11 yes Fig.10 An enlarged schematic diagram in part B.

[0045] Fig.12 It is a schematic diagram for showing the state of the first gravity plate in Example 2 when it is in a drooping state.

[0046] Fig.13 It is a structural diagram of Example 3 of the present application.

[0047] Fig.14 It is a schematic diagram for showing the structure of the cloth roller in Example 3.

[0048] Description of the accompanying drawings: 1. Flat-laying table; 2. Fabric installation mechanism; 21. Support frame; 22. Fabric roller; 221. Connecting block; 3. Fabric pulling mechanism; 31. First clamping assembly; 311. First mounting frame; 312. First clamping roller; 313. First air bag; 314. First cylinder; 32. First driving member; 33. Second clamping assembly; 331. Second mounting frame; 332. Second clamping roller; 333. Second air bag; 334. Second cylinder; 34. Second driving member; 4. Cutting mechanism; 41. Cutter; 42. Third driving member; 5. Pressing mechanism; 51. Third mounting frame; 52. Pressing cylinder; 53. Fourth driving member; 54. Pressure plate; 6. Connecting assembly; 61. Connecting plate; 62. Fixed block; 621. First spring cavity; 622. First spring; 623. Blocking part; 624. Sliding cavity; 63. Upper movable block; 631. Limiting part; 632. Guide surface; 64. Lower movable block; 65. Connecting rod; 66. Limiting strip; 67. Sliding groove; 7. Bag skin; 71. First limiting plate; 711. First sliding cavity; 712. Lightweight hole; 713. Force spring; 72. First gravity plate; 73. Second limiting plate; 731. Second sliding cavity; 732. Limiting part; 733. Elastic rope; 734. Support airbag; 74. Second gravity plate; 741. Abutment part. DETAILED DESCRIPTION

[0049] The following is combined with Figure 1-14 This application is described in further detail.

[0050] It should be noted that for a more convenient and clearer presentation, the drawings of this application have been adjusted in proportion and do not represent the proportional relationship of the actual objects.

[0051] The embodiment of the present application discloses a cloth pulling device. Example 1

[0052] Reference Figures 1 to 3 A cloth-pulling device includes a laying table 1, a cloth installation mechanism 2, a cloth-pulling mechanism 3, a cutting mechanism 4 and a pressing mechanism 5.

[0053] The fabric installation mechanism 2 includes a support frame 21 and a fabric roller 22. The support frame 21 is installed across the paving table 1 along the width direction of the paving table 1. The fabric roller 22 is rotatably connected to the support frame 21, and the fabric roller 22 is used to roll up the fabric. The fabric roller 22 is located above the paving table 1.

[0054] The cloth pulling mechanism 3 includes a first clamping assembly 31 , a first driving member 32 , a second clamping assembly 33 and a second driving member 34 .

[0055] The first clamping assembly 31 includes a first mounting frame 311 and two first clamping rollers 312. The first mounting frame 311 is slidably connected to the paving table 1 along the length direction of the paving table 1. The two first clamping rollers 312 are both mounted on the first mounting frame 311, and a first gap is formed between the two first clamping rollers 312 for the cloth to pass vertically. The first clamping roller 312 is rotatably connected to the first mounting frame 311, and the axis of rotation of the first clamping roller 312 relative to the first mounting frame 311 is colinear with the central axis of the first clamping roller 312.

[0056] A first airbag 313 is disposed around the first clamping roller 312 and extends along the length direction of the first clamping roller 312. The first driving member 32 is used to drive the first mounting frame 311 to slide. In this embodiment, the first driving member 32 is a rodless cylinder.

[0057] The second clamping assembly 33 includes a second mounting frame 331 and two second clamping rollers 332. The second mounting frame 331 is slidably connected to the paving table 1 along the length direction of the paving table 1. The two second clamping rollers 332 are both connected to the second mounting frame 331, and a second gap is formed between the two second clamping rollers 332 for the cloth to pass vertically. The second clamping roller 332 is rotatably connected to the second mounting frame 331, and the axis of rotation of the second clamping roller 332 relative to the second mounting frame 331 is colinear with the central axis of the second clamping roller 332.

[0058] The second clamping roller 332 is surrounded by a second airbag 333, and the second airbag 333 is extended along the length direction of the second clamping roller 332. The second driving member 34 is used to drive the second mounting frame 331 to slide. In this embodiment, the second driving member 34 is a rodless cylinder to save installation space. The height of the second clamping assembly 33 is higher than the height of the first clamping assembly 31.

[0059] The cutting mechanism 4 includes a cutter 41 and a third driving member 42. The cutter 41 is connected to the flattening table 1 in a sliding manner along the width direction of the flattening table 1. The third driving member 42 is used to drive the cutter 41 to slide relative to the flattening table 1. The height of the cutter 41 is located between the cloth roller 22 and the second clamping assembly 33. The third driving member 42 can be a cylinder or a combination of a motor and a screw structure, as long as it can drive the cutter 41 to move.

[0060] The holding mechanism 5 includes a third mounting frame 51, a holding cylinder 52 and a fourth driving member 53. The third mounting frame 51 is connected to the paving table 1 by sliding along the length direction of the paving table 1. The holding cylinder 52 is vertically mounted on the third mounting frame 51. The output end of the holding cylinder 52 is used to abut against the cloth. The fourth driving member 53 is mounted on the paving table 1, and the fourth driving member 53 is used to drive the third mounting frame 51 to slide relative to the paving table 1. In this embodiment, the fourth driving member 53 is a rodless cylinder. In other embodiments, the fourth driving member 53 can also be a combination of a motor and a transmission belt, or a combination of a motor and a lead screw and a nut, as long as it can drive the third mounting frame 51 to move relative to the paving table 1.

[0061] When the cloth needs to be pressed, the third mounting frame 51 equipped with the pressing cylinder 52 is moved to the position where pressing is required through the fourth driving member 53, and then the pressing cylinder 52 is started to make the output end of the pressing cylinder 52 abut against the cloth.

[0062] The output end of the pressing cylinder 52 is connected to a pressing plate 54, which is extended along the width direction of the paving table 1 so that there is a larger contact area between the pressing mechanism 5 and the cloth, thereby reducing damage to the cloth during the pressing process.

[0063] In this embodiment, a plurality of holding cylinders 52 are provided, and the plurality of holding cylinders 52 are arranged at equal intervals along the width direction of the paving table 1, so as to improve the force uniformity of the pressing plate 54 and the cloth.

[0064] Furthermore, the first clamping roller 312 is connected to the first mounting frame 311 by sliding along the height direction of the first mounting frame 311. The first mounting frame 311 is provided with a first cylinder 314, and the first cylinder 314 is used to drive the first clamping roller 312 to slide along the height direction of the first mounting frame 311. In order to adjust the height of the first clamping roller 312 during operation to adapt to the flat thickness of the cloth, the use flexibility of the cloth pulling device is improved.

[0065] The second clamping roller 332 is connected to the second mounting frame 331 in a sliding manner along the height direction of the second mounting frame 331. The second mounting frame 331 is provided with a second cylinder 334, and the second cylinder 334 is used to drive the second clamping roller 332 to slide along the height direction of the second mounting frame 331. This facilitates adjusting the height of the second clamping roller 332 during operation, thereby improving the flexibility of the cloth pulling device.

[0066] The implementation principle of Example 1 is: Figure 4Before pulling the cloth, preparatory work is performed: first, the first clamping assembly 31 and the second clamping assembly 33 are adjusted to the bottom of the cloth roller 22 by the first driving member 32 and the second driving member 34; then, the first airbag 313 and the second airbag 333 are deflated to form a gap between the two first airbags 313 and between the two second airbags 333 for the free end of the cloth to droop naturally to pass through; then, the cloth roller 22 is rotated to make the free end of the cloth fall into the above-mentioned gap.

[0067] This embodiment provides two cloth pulling methods: the first method is one-way cloth pulling; the second method is two-way cloth pulling.

[0068] The operation steps of the first cloth pulling method are as follows: after completing the preparation work, the first airbag 313 is inflated first, and the cloth is clamped by the two first airbags 313; then the first driving member 32 is started, and the first driving member 32 drives the first clamping assembly 31 to drive the end of the cloth to move, and during the movement, the second clamping roller 332 and the second airbag 333 stretch the cloth to make the cloth tight; after the first mounting frame 311 moves to the preset position, the second airbag 333 is inflated, and the cloth is clamped by the two second airbags 333; then the third driving member 42 is started, and the cutter 41 is driven to cut the cloth at the position above the second clamping roller 332; after cutting, the first airbag 313 and the second airbag 333 are deflated, and the first mounting frame 311 is driven to continue to move a short distance away from the cloth roller 22, so that the end of the cloth clamped by the first airbag 313 falls from the first airbag 313, and the end of the cloth clamped by the second airbag 333 falls. When the first clamping assembly 31 returns, the first airbag 313 is refilled with air, and the first cylinder 314 is used to drive the first clamping roller 312 to move down a certain distance, so that the first airbag 313 fits the laid cloth, and the first airbag 313 is used to smooth the laid cloth during the return process, thereby further improving the flatness of the laid cloth.

[0069] The operation steps of the second method of pulling cloth are as follows: Figures 5 to 8, taking the cloth pulling mechanism 3 pulling the cloth to the left as an example. After completing the preparation work, first inflate the first airbag 313, and use the two first airbags 313 to clamp the ends of the cloth; then fill the second airbag 333 on the right of the two second airbags 333 with gas; then start the second driving member 34, and the second driving member 34 drives the second clamping assembly 33 to move in the direction away from the cloth roller 22. During the movement, the second clamping roller 332 and the second airbag 333 form tension on the cloth, driving the cloth to move. After the second clamping assembly 33 reaches the predetermined position, the second driving member 34 drives the second clamping roller 332 to move a short distance in the opposite direction, so that the cloth is folded at the predetermined position; start the fourth driving member 53, and move the third mounting frame 51 and the holding cylinder 52. The cloth is moved to a predetermined position, and the holding cylinder 52 is started to drive the pressing plate 54 to hold the folded position of the cloth; then the second driving member 34 is used to drive the second clamping assembly 33 to move in the direction close to the cloth roller 22, and at the same time, the second airbag 333 on the right is deflated, and the second airbag 333 on the left is filled with gas, and the cloth is tensioned by the second clamping roller 332 on the left and the second airbag 333; when the second clamping assembly 33 returns to its original position, the second airbag 333 on the right is inflated again, and the cloth is clamped by the two second airbags 333, and then the cutting assembly is used to cut the cloth; finally, the first airbag 313 and the second airbag 333 are deflated, so that the end of the cloth falls to the flattening table 1. Example 2

[0070] Reference Fig. 9 The difference between this embodiment and embodiment 1 is that the second airbag 333 includes a bag skin 7, which is a cylindrical structure with openings at both ends. The second clamping roller 332 is inserted into the bag skin 7, and the end edge of the bag skin 7 is fixed to the end of the second clamping roller 332 by strong glue. The inner surface of the bag skin 7 and the circumferential side limit of the second clamping roller 332 form the inner cavity of the second airbag 333.

[0071] Reference Fig.10 and Fig.11 The second clamping roller 332 is fixedly connected with a first limit plate 71 on its circumference. The first limit plate 71 is extended along the length direction of the second clamping roller 332. A first sliding cavity 711 is formed on the side wall of the first limit plate 71 away from the second clamping roller 332. The inner surface of the bag skin 7 is fixedly connected with a first gravity plate 72. The first sliding cavity 711 is used to accommodate the first gravity plate 72. The first gravity plate 72 can slide along the width direction of the first sliding cavity 711, and the side wall of the first gravity plate 72 is in contact with the cavity wall of the first sliding cavity 711.

[0072] It can be known from the implementation principle of the above-mentioned embodiment 1 that when one of the second airbags 333 is used for tensioning, the second airbag 333 needs to be filled with gas, while the other second airbag 333 needs to be deflated. At this time, the flexible bag skin 7 of the other deflated second airbag 333 can be deformed. Therefore, in the case where the first limit plate 71 and the first gravity plate 72 that can slide radially relative to the first limit plate 71 along the second clamping roller 332 are provided, the first gravity plate 72 and the first limit plate 71 will drive the second clamping roller 332 to rotate until the first gravity plate 72 is drooped, and the first gravity plate 72 will drive the second airbag 333 at its connection position to abut against the cloth that has been laid flat on the flattening table 1, and then the cloth is smoothed during the movement of the second clamping assembly 33, thereby improving the uniformity of the cloth laying and reducing bulging.

[0073] Reference Fig.11 and Fig.12 Furthermore, a plurality of second limit plates 73 are fixed to the circumference of the second clamping roller 332. The second limit plates 73 are extended along the length direction of the second clamping roller 332, and the plurality of second limit plates 73 are arranged at intervals around the second clamping roller 332. The intervals between two adjacent second limit plates 73 are consistent, and the intervals between the first limit plate 71 and its two adjacent second limit plates 73 on the left and right are consistent with the intervals between the adjacent second limit plates 73.

[0074] A second sliding cavity 731 is formed on the side wall of the second limiting plate 73 away from the second clamping roller 332 , and a plurality of second gravity plates 74 are fixedly connected to the inner surface of the bag skin 7 . The second sliding cavity 731 is used to accommodate the second gravity plates 74 , and the second gravity plates 74 can slide along the width direction of the second sliding cavity 731 .

[0075] The cavity wall of the second sliding cavity 731 is fixed with a limiting portion 732, and the side wall of the second gravity plate 74 is fixed with an abutting portion 741. When the second airbag 333 is filled with gas, the abutting portion 741 abuts against the limiting portion 732, and the abutting portion 741 is located between the limiting portion 732 and the second clamping roller 332. That is, in the process of deflation of the second airbag 333 filled with gas, the cooperation between the limiting portion 732 and the abutting portion 741 limits the second gravity plate 74 from moving away from the second clamping roller 332.

[0076] When the second airbag 333 is filled with gas, there is a gap between the side wall of the second limiting plate 73 and the inner surface of the bag skin 7, that is, during the process of deflating the second airbag 333 filled with gas, the second gravity plate 74 can move towards the second clamping roller 332.

[0077] A plurality of elastic ropes 733 are arranged in the second sliding cavity 731, one end of the elastic rope 733 is fixedly connected to the second clamping roller 332, and the other end is fixedly connected to the side wall of the second gravity plate 74 close to the second clamping roller 332. When the second airbag 333 is filled with gas, the elastic rope 733 is in a stretched state, that is, during the process of deflating the second airbag 333 filled with gas, the elastic rope 733 forces the second gravity plate 74 to move toward the second clamping roller 332. The plurality of elastic ropes 733 are arranged at equal intervals along the length direction of the second clamping roller 332.

[0078] The material, volume and shape of the first gravity plate 72 and the second gravity plate 74 are all consistent. In this embodiment, the first gravity plate 72 and the second gravity plate 74 are both made of stainless steel. When the second airbag 333 is filled with gas, multiple second gravity plates 74 are used to balance the first gravity plate 72, so that the center of gravity of the second clamping roller 332 is as close to its center of gravity as possible, thereby reducing the impact on the stability of the cloth pulling speed when tensioning and guiding the cloth.

[0079] The first limiting plate 71 and the second limiting plate 73 are both made of a relatively lightweight aluminum alloy. Lightweight holes 712 are penetrated through the side walls of the first limiting plate 71 and the second limiting plate 73 to reduce the influence of the first limiting plate 71 and the second limiting plate 73 of different shapes and volumes on the center of gravity of the second clamping roller 332.

[0080] Furthermore, a force spring 713 is provided in the first sliding cavity 711, one end of the force spring 713 is embedded in the side of the first gravity plate 72 close to the second clamping roller 332, and the other end is embedded in the second clamping roller 332. When the second airbag 333 is filled with gas, the force spring 713 is in a compressed state, so when the second airbag 333 is deflated, the force spring 713 is used to force the first gravity plate 72 to move in a direction away from the second clamping roller 332.

[0081] Furthermore, a support airbag 734 is provided in the second sliding cavity 731, and the support airbag 734 is extended along the length direction of the second sliding cavity 731. When the second airbag 333 is inflated, the support airbag 734 is inflated at the same time, and the support airbag 734 is used to support the second gravity plate 74, so that the position of the bladder skin 7 connected to the second gravity plate 74 can be in a tensioned state, ensuring that each position of the bladder skin 7 remains in a smooth state after the second airbag 333 is filled with gas. Example 3

[0082] Reference Fig.13 and Fig.14 The difference between this embodiment and embodiment 1 is that both left and right sides of the support frame 21 are rotatably connected with connecting components 6, and both ends of the cloth roller 22 are detachably connected to the two connecting components 6 respectively.

[0083] Specifically, both ends of the cloth roller 22 are fixedly connected with a rectangular parallelepiped connection block 221 .

[0084] The connecting assembly 6 comprises a connecting plate 61, a fixed block 62, an upper movable block 63 and a lower movable block 64. The connecting plate 61 is rotatably connected to the support frame 21, and two fixed blocks 62 are provided, and the two fixed blocks 62 are respectively used for abutting two side walls of the connecting block 221 which are away from each other.

[0085] Two upper movable blocks 63 are provided, and the two upper movable blocks 63 are respectively slidably connected to the upper parts of the two fixed blocks 62. The sliding direction of the upper movable blocks 63 relative to the fixed blocks 62 is horizontal, and the two upper movable blocks 63 are located at the same height. The ends of the two upper movable blocks 63 that are close to each other are both provided with inclined guide surfaces 632. When the ends of the two upper movable blocks 63 abut against each other, the two guide surfaces 632 form a "V" shape.

[0086] The side wall of the fixed block 62 is penetrated by a first spring cavity 621, in which a first spring 622 is disposed, and a portion of the upper movable block 63 is disposed in the first spring 622. Both ends of the first spring cavity 621 are provided with a blocking portion 623, and a limiting portion 631 is disposed around the upper movable block 63. One end of the first spring 622 abuts against the blocking portion 623, and the other end abuts against the limiting portion 631. When the first spring 622 is at its original length, the two upper movable blocks 63 abut against each other.

[0087] There are two lower movable blocks 64, which are respectively connected to the lower parts of the two fixed blocks 62 by sliding movement. The sliding direction of the lower movable blocks 64 relative to the fixed blocks 62 is horizontal, and the two lower movable blocks 64 are located at the same height. In this embodiment, the connection method between the lower movable block 64 and the fixed block 62 refers to the connection method between the upper movable block 63 and the fixed block 62. The two are essentially the same, that is, the fixed block 62 is also provided with a corresponding second spring cavity and a second spring, and the specific structure is not repeated here. The difference is that the lower movable block 64 is not provided with a guide surface.

[0088] The ends of the two upper movable blocks 63 that are away from each other are fixedly connected with a "U"-shaped connecting rod 65, and one end of the connecting rod 65 away from the upper movable block 63 is fixedly connected to the lower movable block 64, so that the upper movable block 63 can drive the lower movable block 64 to move when it moves. When replacing the cloth roller 22, first rotate the old cloth roller 22 until the two fixed blocks 62 are in a vertical state; then place the new cloth roller 22 above the upper movable block 63 and lower it, and under the action of the new cloth roller 22 and the guide surface 632, the two upper movable blocks 63 move away from each other; at the same time, the two upper movable blocks 63 drive the two lower movable blocks 64 away from each other through the connecting rod 65, so that the connecting block 221 corresponding to the old cloth roller 22 falls out from the bottom of the fixed block 62, so that the old cloth roller 22 is removed while the new cloth roller 22 is installed, improving the convenience of replacement.

[0089] Furthermore, two "L"-shaped limit bars 66 are provided on the surface of the connecting plate 61, and an "L"-shaped sliding groove 67 is formed between the two limit bars 66. The vertical portion of the sliding groove 67 is used to receive the connecting block 221 dropped from between the two lower movable blocks 64, and the horizontal portion of the sliding groove 67 is used for the connecting block 221 to pass through. After the staff completes the installation of the new cloth roller 22, they can take out the connecting block 221 from the horizontal portion of the sliding groove 67, that is, take out the cloth roller 22 after use, thereby improving the convenience and safety of replacing the cloth roller 22.

[0090] 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 pulling device, characterized in that: The invention comprises a flat-laying table (1), a cloth installation mechanism (2), a cloth pulling mechanism (3), a cutting mechanism (4) and a pressing mechanism (5); the cloth installation mechanism (2) comprises a support frame (21) and a cloth roller (22), the support frame (21) is installed across the flat-laying table (1), the cloth roller (22) is rotatably connected to the support frame (21) and is located above the flat-laying table (1), the cloth roller (22) is extended along the width direction of the flat-laying table (1) and is used for rolling up the cloth; the cloth pulling mechanism (3) comprises a first clamping component (31), a first driving member (32), a second clamping component (33) and a second driving member (34); the first clamping assembly (31) comprises a first mounting frame (311) and two first clamping rollers (312); the first mounting frame (311) is slidably connected to the flattening table (1) along the length direction of the flattening table (1); the two first clamping rollers (312) are both connected to the first mounting frame (311); a first gap is formed between the two first clamping rollers (312) for allowing cloth to vertically pass through; a first air bag (313) is arranged around the circumference of the first clamping roller (312); the first driving member (32) is used to drive the first mounting frame (311) to slide relative to the flattening table (1); The second clamping assembly (33) comprises a second mounting frame (331) and two second clamping rollers (332); the second mounting frame (331) is slidably connected to the flat bed (1) along the length direction of the flat bed (1); the two second clamping rollers (332) are both connected to the second mounting frame (331), and a second gap is formed between the two second clamping rollers (332) for the cloth to pass vertically; a second air bag (333) is arranged around the circumference of the second clamping roller (332); the second driving member (34) is used to drive the second mounting frame (331) to slide relative to the flat bed (1); the height of the second clamping assembly (33) is higher than the height of the first clamping assembly (31); The cutting mechanism (4) comprises a cutter (41) and a third driving member (42); the cutter (41) is connected to the flattening table (1) in a sliding manner along the width direction of the flattening table (1); and the third driving member (42) is used to drive the cutter (41) to slide relative to the flattening table (1); the height of the cutter (41) is higher than the second clamping assembly (33) and lower than the cloth roller (22); The holding mechanism (5) comprises a third mounting frame (51), a holding cylinder (52) and a fourth driving member (53); the third mounting frame (51) is slidably connected to the flattening table (1) along the length direction of the flattening table (1); the holding cylinder (52) is vertically mounted on the third mounting frame (51); the output end of the holding cylinder (52) is used to abut against the cloth; the fourth driving member (53) is mounted on the flattening table (1); the fourth driving member (53) is used to drive the third mounting frame (51) to slide relative to the flattening table (1).

2. A cloth pulling device according to claim 1, characterized in that: The second clamping roller (332) is rotatably connected to the second mounting frame (331), and the axis of rotation of the second clamping roller (332) relative to the second mounting frame (331) is colinear with the central axis of the second clamping roller (332).

3. A cloth pulling device according to claim 2, characterized in that: The first clamping roller (312) is connected to the first mounting frame (311) in a sliding manner along the height direction of the first mounting frame (311); the first mounting frame (311) is provided with a first cylinder (314), and the first cylinder (314) is used to drive the first clamping roller (312) to slide along the height direction of the first mounting frame (311); the second clamping roller (332) is connected to the second mounting frame (331) in a sliding manner along the height direction of the second mounting frame (331); the second mounting frame (331) is provided with a second cylinder (334), and the second cylinder (334) is used to drive the second clamping roller (332) to slide along the height direction of the second mounting frame (331).

4. A cloth pulling device according to claim 2, characterized in that: The second airbag (333) comprises a cylindrical bag skin (7), the second clamping roller (332) is inserted into the bag skin (7), the end edge of the bag skin (7) is fixedly connected to the end of the second clamping roller (332), the inner surface of the bag skin (7) and the peripheral side of the second clamping roller (332) are limited to form the inner cavity of the second airbag (333); the peripheral side of the second clamping roller (332) is provided with a first limiting plate (71), and the first limiting plate (71) is extended along the length direction of the second clamping roller (332); The inner surface of the bag skin (7) is connected to a first gravity plate (72), and the first gravity plate (72) is extended along the length direction of the second clamping roller (332); the side wall of the first limiting plate (71) away from the second clamping roller (332) is provided with a first sliding cavity (711), and the first sliding cavity (711) is used to accommodate the first gravity plate (72); when the second airbag (333) is filled with gas, the side wall of the first limiting plate (71) away from the first clamping roller (312) abuts against the inner surface of the bag skin (7).

5. A cloth pulling device according to claim 4, characterized in that: A plurality of second limit plates (73) are arranged on the circumferential side of the second clamping roller (332), the second limit plates (73) are extended along the length direction of the second clamping roller (332), and the plurality of second limit plates (73) are arranged at intervals around the second clamping roller (332); the interval between adjacent second limit plates (73) is consistent with the interval between adjacent second limit plates (73), and the interval between the first limit plate (71) and the left and right adjacent second limit plates (73) is consistent; a second sliding cavity (731) is provided on the side wall of the second limit plate (73) away from the second clamping roller (332), and a plurality of second gravity plates (74) are provided on the inner surface of the bag skin (7), and the second sliding cavity (731) is used to accommodate the second gravity plates (74); a cavity wall of the second sliding cavity (731) is provided with a limit portion (731); 32), the side wall of the second gravity plate (74) is provided with an abutting portion (741), and the limiting portion (732) is used for abutting the abutting portion (741); when the second airbag (333) is filled with gas, there is a gap between the side of the second limiting plate (73) away from the second clamping roller (332) and the inner surface of the bag skin (7), and the abutting portion (741) abuts against the limiting portion (732), and the abutting portion (741) is located between the limiting portion (732) and the second clamping roller (332); the first gravity plate (72) and the second gravity plate (74) are of the same material, volume and shape, the first limiting plate (71) and the second limiting plate (73) are both made of aluminum alloy, and the first limiting plate (71) and the second limiting plate (73) are both penetrated by a plurality of lightweight holes (712).

6. A cloth pulling device according to claim 5, characterized in that: An elastic rope (733) is arranged in the second sliding cavity (731), one end of the elastic rope (733) is connected to the side of the second gravity plate (74) close to the second clamping roller (332), and the other end is connected to the peripheral side of the second clamping roller (332); when the abutting portion (741) abuts against the limiting portion (732), the elastic rope (733) is in a stretched state; a force spring (713) is arranged in the first sliding cavity (711), one end of the force spring (713) is connected to the side of the first gravity plate (72) close to the second clamping roller (332), and the other end is connected to the peripheral side of the second clamping roller (332); when the second airbag (333) is filled with gas, the force spring (713) is in a compressed state.

7. The cloth pulling device according to claim 1, characterized in that: The cloth roller (22) is detachably connected to the support frame (21).

8. A cloth pulling device according to claim 7, characterized in that: The left and right sides of the support frame (21) are both provided with connection components (6), and the connection components (6) include a connection plate (61), a fixed block (62), an upper movable block (63) and a lower movable block (64); the connection plate (61) is rotatably connected to the support frame (21), two fixed blocks (62) are provided, and the two fixed blocks (62) are both connected to the connection plate (61), and a vertical interval is provided between the two fixed blocks (62); two upper movable blocks (63) are provided, and the upper movable blocks (63) are horizontally slidably connected to the upper part of the fixed block (62), and the two upper movable blocks (63) are connected to the upper part of the fixed block (62). The upper movable block (63) is connected to the two fixed blocks (62) in a one-to-one correspondence; the fixed block (62) is provided with a first spring (622), and the first spring (622) is used to force the two upper movable blocks (63) to abut against each other; the lower movable block (64) is arranged at the lower part of the fixed block (62); both ends of the cloth roller (22) are provided with a connecting block (221), and the connecting block (221) is a rectangular parallelepiped; a space for accommodating the connecting block (221) is defined between the two fixed blocks (62), the upper movable block (63) and the lower movable block (64).

9. A cloth pulling device according to claim 8, characterized in that: Two lower movable blocks (64) are provided, the lower movable blocks (64) are horizontally slidably connected to the fixed blocks (62), and the two lower movable blocks (64) are connected to the two fixed blocks (62) in a one-to-one correspondence; Connecting rods (65) are fixed to both ends of the two upper movable blocks (63) that are away from each other, and one end of the connecting rod (65) that is away from the upper movable block (63) is connected to the lower movable block (64); the two upper movable blocks (63) are both provided with guide surfaces (632), and when the two upper movable blocks (63) abut against each other, the two guide surfaces (632) form a "V" shape, and the guide surfaces (632) are used for abutting the connecting block (221).

10. A cloth pulling device according to claim 9, characterized in that: The connection plate (61) is provided with two limit bars (66) below the fixed block (62); the limit bars (66) are in an "L" shape, and an "L"-shaped sliding groove (67) is defined between the two limit bars (66); the vertical portion of the sliding groove (67) is used to receive the connection block (221) dropped from the fixed block (62), and the horizontal portion of the sliding groove (67) is used to allow the connection block (221) to pass through.

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