A sewing tape device

Abstract

This invention relates to the field of canvas bag production equipment technology, and discloses a sewing device, a fabric feeding platform, and a multi-needle sewing machine, with the multi-needle sewing machine located at the tail end of the fabric feeding platform. A pressing production line is located at the bottom edge of the fabric feeding platform, and a flanging plate is located at the front end of the pressing production line for conveying the fabric after flanging. Multiple sets of strap-making devices are provided on one side of the pressing production line. This invention can automatically cut, bend, and shape the fabric strip to a fixed length to form a handle strap, and automatically feed it to the multi-needle sewing machine for sewing, achieving fully automated sewing and improving production efficiency. The multiple sets of strap-making devices are arranged in an alternating pattern, eliminating the time difference between the pressing production line and the strap-making devices. This allows multiple sets of strap-making machines to complete strap production while the fabric is continuously being conveyed, synchronously feeding the handle strap onto the fabric on the production line, further improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of canvas bag production equipment technology, and in particular to a sewing device for sewing handles to the opening of canvas bags. Background Technology

[0002] Canvas bags are soft carrying containers widely used in the market. The bag material is relatively rigid, allowing them to carry heavier items than plastic bags. The handles of canvas bags are made of the same material as the bag body, with one handle on each side of the bag opening. The handles are bent and sewn to the bag opening at both ends.

[0003] The production equipment for canvas bags includes various sewing machines, feeding and pressing lines, robotic arms, etc., to achieve automation. Because the material of canvas bag handles is not easy to shape, it is not easy to position them when bending and sewing. Therefore, many canvas bag production lines still use manual or semi-automatic sewing, and cannot fully automate the production of canvas bags. Therefore, an automated device is needed to automate the sewing of canvas bag handles in order to improve production efficiency. Summary of the Invention

[0004] Therefore, it is necessary to provide a sewing device for canvas bag production equipment to address the issue of canvas bag handles.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sewing device, a fabric feeding platform and a multi-needle sewing machine, wherein the multi-needle sewing machine is located at the tail end of the fabric feeding platform.

[0006] A pressing production line is located at the bottom edge of the fabric conveying platform. A flanging plate is located at the front end of the pressing production line for conveying the fabric after flanging. Multiple sets of belt-making devices are provided on one side of the pressing production line. Each belt-making device includes:

[0007] A clamping assembly is disposed on one side of the front end of the pressing production line for fixing the material strip;

[0008] A cutting assembly, disposed on one side of the clamping assembly, is used to cut the material strip;

[0009] A clamping cylinder is located behind the clamping assembly and is used to clamp the end of the material strip and then pull it along the conveying direction of the pressing production line.

[0010] A bending and feeding mechanism is disposed between the clamping assembly and the clamping cylinder;

[0011] The bending and feeding mechanism includes a first movable platform that can move towards the pressing production line. The first movable platform is equipped with a liftable lifting frame. Two sets of clamping components are provided above the lifting frame. The two sets of clamping components are arranged along the feeding direction of the material belt. The two sets of clamping components are rotatable. After clamping the material belt, the two sets of clamping components rotate in opposite directions to bend both ends of the material belt by 90 degrees and feed it to the fabric edge between the pressing production line and the fabric conveying platform for combined conveying. The belt is then sewn by a multi-needle sewing machine.

[0012] By adopting the above technical solution, the material strip can be automatically cut, bent into a handle shape, and then fed. In conjunction with the external pressing production line, it is sewn by a multi-needle sewing machine without the need for manual operation.

[0013] In a preferred embodiment, the present invention may be further configured such that: the belt-making device is provided in two sets, and is staggered on one side of the pressing production line.

[0014] By adopting the above technical solution, the production line can transmit fabric without interruption, and there will be no time difference due to the slow bag making time of the bag making device, which will not lead to a decrease in efficiency.

[0015] In a preferred embodiment, the present invention can be further configured such that: the clamping assembly achieves clamping by driving the pressure plate with a cylinder, and the cutting assembly moves towards the tail end of the clamping assembly by pushing the cylinder.

[0016] By adopting the above technical solution, the belt pulling process can be automated.

[0017] In a preferred embodiment, the present invention can be further configured such that: the bottom of the cutter assembly is provided with a slide rail slidably connected thereto; the cutter assembly consists of a gripper cylinder and two sets of intersecting cutters; the two sets of cutters are switched between an open state and a shearing state by the gripper cylinder.

[0018] By adopting the above technical solution, the action of scissors cutting fabric is simulated, and the fabric cutting effect is good.

[0019] In a preferred embodiment, the present invention may be further configured such that the belt-making device further includes a transmission belt assembly, the tail end of which is provided with a first motor, and the clamping cylinder is slidably mounted on a track provided on the transmission belt assembly.

[0020] By adopting the above technical solution and combining it with a limit sensor, it can achieve precise positioning, with a simple structure and low cost.

[0021] In a preferred embodiment, the present invention may be further configured such that the bending conveyor mechanism further includes a base, the first movable table is slidably mounted on the base via a slide rail, and the first movable table is displaced toward the pressing conveyor line via a second cylinder.

[0022] By adopting the above technical solution, the completed handle strap can be fed onto the fabric.

[0023] In a preferred embodiment, the present invention can be further configured such that: a third cylinder is fixedly provided at the bottom of the first movable platform, and the bottom end of the lifting frame is connected to the output end of the third cylinder.

[0024] By adopting the above technical solution, the belt feeding and propulsion action can be achieved.

[0025] In a preferred embodiment, the present invention can be further configured such that: the clamping assembly includes a rotary motor and a clamping top plate, the rotary motor is fixed on the lifting frame, the clamping top plate is disposed at the output end of the rotary motor, and a liftable lifting clamping plate assembly is provided below the clamping top plate.

[0026] By adopting the above technical solution and using a lifting mechanism, the operation of the bag clamping cylinder will not be affected.

[0027] In a preferred embodiment, the present invention can be further configured such that: the lifting clamping plate assembly is driven to lift by a cylinder, and the clamping point of the top plate and the lifting clamping plate assembly on the material strip is located on the extension line of the rotating shaft when it rotates.

[0028] By adopting the above technical solution, when the material strip is bent, the material strip between the two clamping bending points will not be stretched, and the material strip will not be torn.

[0029] In a preferred embodiment, the present invention may be further configured such that: a pressing belt is provided at the multi-needle sewing section for pressing the fabric edge and the material belt together before passing through the multi-needle sewing belt.

[0030] By adopting the above technical solution, the back position of the sewing area is simulated for pressing and sewing.

[0031] In summary, the present invention has at least one of the following beneficial technical effects:

[0032] This invention can automatically cut and bend material strips to a fixed length to form handles, and can automatically feed the material to a multi-needle sewing machine for sewing, realizing fully automated sewing work and improving production efficiency.

[0033] Multiple sets of belt-making devices are arranged in an alternating manner, which can eliminate the time difference between the pressing production line and the belt-making device. Multiple sets of belt-making machines can complete belt making while the fabric is being conveyed continuously, and simultaneously feed the handle belt onto the fabric on the production line, thereby improving production efficiency. Attached Figure Description

[0034] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0035] Figure 1 This is a perspective view of the present invention;

[0036] Figure 2 This is a perspective view of the tape-making device in this invention;

[0037] Figure 3 This is a perspective view of the bending conveyor belt mechanism in this invention;

[0038] Figure 4 This is a schematic diagram showing the rotation direction of the clamping top plate in the bending and feeding mechanism;

[0039] Figure 5 This is a schematic diagram of the pressing production line, multi-needle sewing machine, and fabric conveying platform in this invention;

[0040] Figure 6 for Figure 5 A magnified view of part A in the middle;

[0041] Figure 7 This is a perspective view of the multi-needle sewing machine, fabric feeding platform, and crimping belt in this invention.

[0042] In the attached image:

[0043] 1. Pressing production line; 11. Fabric feeding platform; 12. Pressing belt; 13. Flanging plate; 2. Multi-needle sewing machine; 3. Belt making device; 31. Clamping cylinder; 32. First motor; 33. Transmission belt assembly; 34. Cutting knife assembly; 35. Clamping assembly; 36. Pushing cylinder; 4. Material belt; 5. Bending and feeding mechanism; 51. Base; 52. Second cylinder; 53. First movable table; 54. Third cylinder; 55. Lifting frame; 56. Rotary motor; 57. Clamping top plate; 58. Lifting clamping plate assembly. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] exist Figure 1-7 In the illustrated embodiment, the present invention provides a technical solution: a sewing device, comprising a fabric feeding platform 11 and a multi-needle sewing machine 2, the multi-needle sewing machine 2 being disposed at the tail end of the fabric feeding platform 11. The fabric is a long, uncut strip of fabric, fed by conveyor rollers (not shown in the figure) located at the front and rear ends, and a handle needs to be sewn on one side.

[0046] The pressing conveyor line 1 is located at the bottom edge of the fabric conveying platform 11, and the flanging plate 13 is located at the front end of the pressing conveyor line 1. It is used to convey the fabric after flanging. The edge of the fabric exceeds the fabric conveying platform 11 and bends. The flanging plate 13 presses the bend to form a flanging. The belt of the pressing conveyor line 1 is driven by a motor. The flanging part of the fabric is clamped by the pressing conveyor line 1 and the fabric conveying platform 11 and conveyed synchronously with the fabric.

[0047] Two sets of staggered belt-making devices 3 are provided on one side of the pressing production line 1. The belt-making device 3 includes:

[0048] Clamping assembly 35: Located on one side of the front end of the pressing production line 1, used to fix the material belt 4. The clamping assembly 35 clamps the material belt 4 by driving the pressure plate with a cylinder, and the material belt 4 is fed by an external material belt roll.

[0049] Cutting assembly 34: Located on one side of the clamping assembly 35, it is used to cut the material strip. The cutting assembly 34 is moved towards the tail end of the clamping assembly 35 by a push cylinder 36 located at its tail. The bottom of the cutting assembly 34 has a slide rail slidably connected to it. The cutting assembly 34 consists of a gripper cylinder and two sets of intersecting cutters. The intersecting cutters are connected in the middle by a rotating shaft, forming a cross shape. The two sets of cutters change between an open state and a shearing state via the gripper cylinder, mimicking the shape of scissors.

[0050] Clamping cylinder 31: Located behind the clamping assembly 35, it is used to clamp the end of the material belt and pull it along the conveying direction of the pressing production line 1. The pressing end is equipped with a pressure plate and is adapted to the material belt 4. The clamping cylinder 31 is driven to move by the transmission belt assembly 33. The tail end of the transmission belt assembly 33 is equipped with a first motor 32. The clamping cylinder 31 is slidably mounted on the track provided by the transmission belt assembly 33, and both ends of the clamping cylinder 31 are equipped with pulleys. The first motor 32 drives the pulleys to rotate, and the pulleys are wrapped with a belt. The belt is fixed to the clamping cylinder 31.

[0051] Bending and feeding mechanism 5: disposed between the clamping assembly 35 and the clamping cylinder 31;

[0052] The bending and feeding mechanism 5 includes: a first movable platform 53 movable towards the pressing production line 1; the first movable platform 53 is slidably mounted on a base 51 via a slide rail; the base 51 is fixed; and the first movable platform 53 is displaced towards the pressing production line 1 via a second cylinder 52; a track is provided on the base 51; the first movable platform 53 is slidably mounted on the track; a liftable lifting frame 55 is provided on the first movable platform 53; a third cylinder 54 is fixedly provided at the bottom of the first movable platform 53; the bottom end of the lifting frame 55 is connected to the output end of the third cylinder 54; two sets of clamping assemblies are provided above the lifting frame 55; the two sets of clamping assemblies are arranged along the feeding direction of the material belt; the two sets of clamping assemblies... The clamping components are rotatable. After clamping the material strip, the two sets of clamping components rotate in opposite directions, bending both ends of the material strip by 90 degrees and feeding it to the fabric edge between the pressing line 1 and the fabric conveying platform 11 for combined conveying. The strip is then sewn by a multi-needle sewing machine 2. Furthermore, the clamping components include a rotary motor 56 and a clamping top plate 57. The rotary motor 56 is fixed on the lifting frame 55, and the clamping top plate 57 is located at the output end of the rotary motor 56. Below the clamping top plate 57 is a liftable lifting clamping plate assembly 58, which is driven to rise and fall by a cylinder. The clamping points of the clamping top plate 57 and the lifting clamping assembly 58 are located on the extension line of their rotating shafts. Figure 4 As shown.

[0053] like Figure 7 As shown, the multi-needle sewing machine 2 is located at the end of the conveyor belt of the pressing production line 1. A pressing belt 12 is provided at the sewing point of the multi-needle sewing machine 2. The pressing belt 12 is divided into upper and lower sections, driven by a motor. The two belts are located outside the fabric feed platform 11 and are used to press the fabric hem and the fabric strip. The sewing point of the multi-needle sewing machine 2 is on the end face of the fabric feed platform 11. A notch is also provided at the sewing point on the end face of the fabric feed platform 11. A fixed platform is located at the lower end of the notch, used to transfer the fabric hem and the fabric strip to the sewing point on the upper end face of the fabric feed platform 11. The two pressing belts 12 are used to press the area behind the fabric sewing point (the hem and the end of the fabric strip). As the fabric moves, the multi-needle sewing machine 2 sews the fabric hem and the fabric strip together, achieving the stitching.

[0054] The specific working principle of the present invention will be described in detail below: The fabric passes through the fabric conveying platform 11, and the edge of the fabric is turned over by the edge-turning plate 13. The edge is then conveyed synchronously by the pressing production line 1 and the fabric conveying platform 11 to the belt making device 3. The end of the material belt 4 enters the clamping assembly 35. The clamping cylinder 31 is driven to move by the first motor 32 in conjunction with the transmission belt assembly 33. The clamping cylinder 31 pulls the material belt 4 from the tail end of the clamping assembly 35 and drives it to move towards the first motor 32. When it is pulled to a specified distance (i.e., the length of a single handle belt), the clamping assembly 35 clamps the material belt. The second cylinder 52 and the third cylinder 54 drive the two clamping assemblies to move back and forth and rise and fall towards the pressing production line 1, so as to place the material belt between the clamping top plate 57 and the lifting clamping plate assembly 58 and clamp it.

[0055] The cylinder 36 drives the cutter assembly 34 to cut the material strip 4 at the tail end of the clamping assembly 35. The rotary motor 56 drives the two clamping assemblies to rotate 90 degrees in opposite directions, bending the material strip. Both ends of the material strip are perpendicular to the pressing line 1, and part of the material strip ends are exposed outside the clamping point. Through the push of the second cylinder 52 and the lifting frame 55, the two ends of the material strip are placed under the fabric with the flange between the pressing line 1 and the fabric feeding platform 11. The lifting clamping plate assembly 58 releases the handle belt and resets. The bending and feeding mechanism 5 resets as a whole. The pressing line 1 drives the flanged fabric and handle belt to be transported to the multi-needle sewing machine 2. After reaching the multi-needle sewing machine 2, the two pressing belt lines 12 press the flanged part and the handle belt and move towards the multi-needle sewing machine 2. The fabric and handle belt are transferred to the top of the fabric feeding platform 11 through the notch on the end face of the fabric feeding platform 11 and sewn by the multi-needle sewing machine 2 to achieve uninterrupted sewing.

[0056] The belt feeding device 3 is equipped with at least two belts to match the speed of fabric conveying and improve work efficiency.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sewing device, comprising a fabric feed platform (11) and a multi-needle sewing machine (2), wherein the multi-needle sewing machine (2) is disposed at the tail end of the fabric feed platform (11), characterized in that, A pressing production line (1) is set at the bottom edge of the fabric conveying platform (11). Flanging plate (13) is set at the front end of the pressing production line (1) and is used to fold the fabric and then convey it. The pressing production line (1) is provided with multiple sets of belt-making devices (3) on one side, and the belt-making device (3) includes: The clamping assembly (35) is disposed on one side of the front end of the pressing production line (1) and is used to fix the material strip; A cutter assembly (34) is disposed on one side of the clamping assembly (35) for cutting the material strip; Clamping cylinder (31) is located behind clamping assembly (35) and is used to clamp the end of the material strip and pull it along the conveying direction of the pressing production line (1). A bending and feeding mechanism (5) is disposed between the clamping assembly (35) and the clamping cylinder (31); The bending and feeding mechanism (5) includes: a first movable platform (53) that can move in the direction of the pressing production line (1), a lifting frame (55) that can be raised and lowered on the first movable platform (53), two sets of clamping components above the lifting frame (55), the two sets of clamping components are arranged along the feeding direction of the material belt, the two sets of clamping components can be rotated, the two sets of clamping components rotate in opposite directions after clamping the material belt, bend the two ends of the material belt by 90 degrees, and feed the material to the fabric edge between the pressing production line (1) and the fabric conveying platform (11) for combined conveying, and sew the belt through a multi-needle sewing machine (2).

2. The device of claim 1, wherein: The belt making device (3) has two sets, which are staggered on one side of the pressing production line (1).

3. The device of claim 1, wherein: The clamping assembly (35) clamps the pressure plate by a cylinder, and the cutting assembly (34) moves towards the tail end of the clamping assembly (35) by pushing the cylinder (36).

4. The device of claim 3, wherein: The cutter assembly (34) has a slide rail at its bottom that is slidably connected to it. The cutter assembly (34) consists of a gripper cylinder and two sets of intersecting cutters. The two sets of cutters are switched between an open state and a shearing state by the gripper cylinder.

5. The device of claim 1, wherein: The belt-making device (3) also includes a transmission belt assembly (33), the tail end of which is provided with a first motor (32), and the belt-clamping cylinder (31) is slidably installed on the track provided on the transmission belt assembly (33).

6. The apparatus of claim 1 wherein: The bending conveyor (5) also includes a base (51), the first movable platform (53) is slidably mounted on the base (51) via a slide rail, and the first movable platform (53) is displaced toward the pressing conveyor line (1) via a second cylinder (52).

7. The apparatus of claim 1 wherein: The bottom of the first movable platform (53) is fixedly provided with a third cylinder (54), and the bottom end of the lifting frame (55) is connected to the output end of the third cylinder (54).

8. The apparatus of claim 1 wherein: The clamping assembly includes a rotary motor (56) and a clamping top plate (57). The rotary motor (56) is fixed on the lifting frame (55). The clamping top plate (57) is located at the output end of the rotary motor (56). A lifting clamping plate assembly (58) capable of lifting and lowering is provided below the clamping top plate (57).

9. The apparatus of claim 8 wherein: The lifting clamping plate assembly (58) is driven to lift by a cylinder, and the clamping point of the top plate (57) and the lifting clamping plate assembly (58) on the material belt is located on the extension line of the rotating shaft when it rotates.

10. The device of claim 1, wherein: The multi-needle sewing machine (2) is equipped with a pressing belt line (12) at the sewing point, which is used to press the fabric edge and the material belt together before sewing the belt through the multi-needle sewing machine (2).

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