Woven bag sewing and edge pressing device

Abstract

The utility model relates to the field of woven bag processing, in particular to a woven bag sewing and edge pressing device, which is characterized in that a sewing machine is arranged at the top of a workbench, a mounting groove is arranged at the top of the workbench on one side of the sewing machine, a conveying belt is mounted in the mounting groove, and lifting seats are respectively arranged in the mounting groove at two ends of the conveying belt in the length direction; a supporting plate is fixedly installed on the lifting seat, supporting rollers are rotatably installed on the supporting plate, the outer sides of the two supporting rollers are sleeved with a pressing belt, the pressing belt is arranged outside the conveying belt in a surrounding mode, and a tensioning roller used for keeping the pressing belt in a tensioning state is arranged in the installation groove; when the woven bag is sewn, the woven bag is pressed through the pressing belt, the end, close to the sewing machine, of the woven bag is kept flat, and the woven bag is driven by the conveying belt to move at a constant speed to pass through the lower portion of the sewing machine.

Description

Technical Field

[0001] This utility model relates to the field of woven bag processing, specifically to a woven bag sewing and edge pressing device. Background Technology

[0002] Woven bags, also known as snake-skin bags, are a type of plastic bag. They are generally made of various chemical plastic materials such as polyethylene and polypropylene. Woven bags have a wide range of uses, mainly for packaging and packing various items.

[0003] During the processing of woven bags, one end needs to be sewn closed. Currently, the edges of the woven bag are typically held down manually before being sewn by a sewing machine. However, due to varying levels of skill among workers, uneven or crooked stitching can easily occur, resulting in poor consistency in the sewing. Furthermore, manual edge pressing is labor-intensive and inefficient, and therefore needs improvement. Summary of the Invention

[0004] The purpose of this invention is to provide a sewing edge pressing device for woven bags, which can replace manual pressing of the edges of woven bags and drive the woven bags to move at a uniform speed, thereby solving the defects mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A woven bag sewing and pressing device includes a workbench, a sewing machine on the top of the workbench, and a mounting groove on the top of the workbench located on one side of the sewing machine. A conveyor belt for moving the woven bag relative to the sewing machine is installed in the mounting groove. The conveyor belt extends horizontally. Lifting seats are respectively provided in the mounting groove at both ends of the conveyor belt along its length. The lifting seats are driven to move up and down by a power mechanism. A support plate is fixedly installed on the lifting seat. Support rollers extending along the width direction of the conveyor belt are rotatably installed on the support plates. A pressing belt is sleeved on the outer side of the two support rollers. The pressing belt is surrounded around the outside of the conveyor belt. A tensioning roller for keeping the pressing belt taut is provided in the mounting groove.

[0007] As a preferred technical solution, a vertically extending guide rod is fixedly installed in the mounting groove, and the lifting seat is slidably installed on the guide rod.

[0008] As a preferred technical solution, the power mechanism includes a lead screw driven by a motor, the lead screw being arranged parallel to the guide rod, and the lifting seat being screwed onto the lead screw.

[0009] As a preferred technical solution, guide rollers are rotatably installed in the mounting grooves located below the two support rollers. The guide rollers and the tension rollers are arranged parallel to the support rollers, and the guide rollers are supported on the inner side of the pressing belt. A vertically extending slide rod is fixedly installed on the bottom wall of the mounting groove, and a mounting plate is slidably installed on the slide rod. A spring is connected between the mounting plate and the bottom wall of the mounting groove. The tension roller is rotatably installed on the top of the mounting plate and is supported on the bottom of the pressing belt between the two guide rollers.

[0010] As a preferred technical solution, the width of the compression belt is smaller than the width of the conveyor belt.

[0011] As a preferred technical solution, the top of the conveyor belt is flush with the top of the workbench.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This application utilizes a pressing belt to hold the woven bag in place during sewing, ensuring the end of the bag closest to the sewing machine remains flat. A conveyor belt then moves the bag at a uniform speed, passing it beneath the sewing machine. This prevents the stitches from becoming skewed and ensures a more even distribution of stitches, significantly improving the sewing quality, reducing labor intensity for workers, and increasing processing efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0016] Figure 2 yes Figure 1 A cross-sectional view;

[0017] Figure 3 yes Figure 2 Schematic diagram of sectional view AA.

[0018] In the diagram: 1-Workbench; 2-Sewing machine; 3-Mounting groove; 4-Conveyor belt; 5-Conveyor roller; 6-Conveyor motor; 7-Lifting seat; 8-Protrusion; 9-Guide rod; 10-Motor; 11-Screw; 12-Support plate; 13-Support roller; 14-Pressure belt; 15-Tension roller; 16-Guide roller; 17-Slide rod; 18-Mounting plate; 19-Spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 3 As shown, a woven bag sewing and edge-pressing device includes a workbench 1. A sewing machine 2 is located on the top left side of the workbench 1. A mounting groove 3 is located on the top of the workbench to the right of the sewing machine 2. A conveyor belt 4 for moving the woven bag back and forth relative to the sewing machine 2 is installed in the mounting groove 3. The conveyor belt 4 extends horizontally back and forth. Specifically, horizontally extending conveyor rollers 5 are rotatably installed in the front and rear ends of the mounting groove 3, respectively. The conveyor belt 4 is tensioned and fitted around the outside of the two conveyor rollers 5. A conveyor motor 6 is also bolted to the right side of the workbench 1. One end of one of the conveyor rollers 5 is connected to the rotating shaft of the conveyor motor 6 through a coupling. The conveyor motor 6 drives one of the conveyor rollers 5 to rotate, which in turn drives the conveyor belt 4 to rotate, and the conveyor belt 4 drives the woven bag on it to move back and forth.

[0021] The top of the conveyor belt 4 is flush with the top of the workbench 1, so that the woven bags placed on the conveyor belt 4 can remain flat on the workbench 1.

[0022] like Figure 3As shown, lifting seats 7 are respectively installed in the mounting grooves 3 at the front and rear ends of the conveyor belt 4. The lifting seats 7 are driven to move up and down by a power mechanism. Specifically, the top of the front and rear side walls of the mounting groove 3 are respectively provided with inwardly extending protrusions 8. Vertically extending guide rods 9 are fixed between the two protrusions 8 and the bottom wall of the mounting groove 3 by bolts. The lifting seats 7 are slidably mounted on the corresponding guide rods 9, providing support and guidance for the up and down movement of the lifting seats 7. The power mechanism includes a lead screw 11 driven by a motor 10. The lead screw 11 is arranged parallel to the guide rods 9. The upper end of the lead screw 11 is rotatably mounted on the bottom of the corresponding protrusion 8 through a bearing. The lower end of the lead screw 11 is connected to the rotating shaft of the motor 10 through a coupling. The motor 10 is mounted on the bottom wall of the mounting groove 3 by bolts. The lifting seats 7 are screwed onto the corresponding lead screw 11. The motor 10 drives the lead screw 11 to rotate, and the lead screw 11 drives the lifting seats 7 to move up and down along the guide rods 9, thereby adjusting the height of the lifting seats 7.

[0023] Two support plates 12 are fixedly installed on the sides of the two lifting seats 7 that are close to each other. The support plates 12 are L-shaped. The horizontally extending end of the support plate 12 is fixed to the lifting seat 7 by bolts. A support roller 13 is rotatably installed between the vertically extending ends of the two opposing support plates 12 through a bearing. The support roller 13 extends left and right along the width direction of the conveyor belt 4. When the lifting seat 7 rises, it can drive the support roller 13 to extend upward through the inner side of the protrusion 8 and out of the mounting groove 3. A pressing band 14 is sleeved on the outer side of the two support rollers 13. The pressing band 14 is arranged around the outside of the conveyor belt 4. The width of the pressing band 14 is smaller than the width of the conveyor belt 4. The pressing band 14 is located in the mounting groove 3 on the side close to the sewing machine 2. It is used to press down the woven bag on the conveyor belt 4 and keep the end of the woven bag close to the sewing machine 2 flat.

[0024] The mounting groove 3 is equipped with a tension roller 15 to keep the pressing band 14 taut. Specifically, guide rollers 16 are rotatably mounted in the mounting groove 3 below the two support rollers 13 via bearings. Both the guide rollers 16 and the tension roller 15 are arranged parallel to the support rollers 13, and the guide rollers 16 are supported on the inner side of the pressing band 14. Vertically extending slide rods 17 are fixedly mounted on the bottom wall of the mounting groove 3. Four slide rods 17 are arranged in a rectangular array. The lower end of the slide rods 17 is provided with external threads and screwed into the bottom wall of the mounting groove 3. A mounting plate 18 is slidably mounted on the four slide rods 17. The upper end of the slide rods 17 is integrally formed with a feature to prevent the mounting plate from falling off. The stop block is located between the mounting plate 18 and the bottom wall of the mounting groove 3. A spring 19 is sleeved on the slide rod 17. The two ends of the spring 19 abut against the bottom wall of the mounting plate 18 and the mounting groove 3, respectively. Two vertical plates are fixedly installed on the top of the mounting plate 18 by bolts. The tension roller 15 is rotatably installed between the two vertical plates by bearings. The tension roller 15 is supported on the bottom of the pressing band 14 between the two guide rollers 16. The spring 19 gives the mounting plate 18 and the tension roller 15 an upward thrust, thereby tightening the pressing band 14 upward through the tension roller 15.

[0025] In practical use, the lifting seat 7 is first raised by the power mechanism. The lifting seat 7 drives the support roller 13 to extend upwards outside the mounting groove 3 via the support plate 12. The pressing belt 14 between the two support rollers 13 rises synchronously with the support rollers 13 and separates from the top of the conveyor belt 4. At the same time, the pressing belt 14 drives the tension roller 15 and the mounting plate 18 to move downwards and compress the spring 19. The woven bag is placed on top of the conveyor belt 4, and the end of the woven bag to be sealed is kept below the sewing machine 2 along the trajectory of the conveyor belt 4. Then, the lifting seat 7 is raised by the power mechanism. As the conveyor belt descends, the pressing belt 14 between the two support rollers 13 descends synchronously with the support rollers 13. At the same time, the spring 19 extends and drives the tension roller 15 to move upward, keeping the pressing belt 14 taut until the pressing belt 14 between the two support rollers 13 descends to fit against the top of the conveyor belt 4. The pressing belt 14 presses down the woven bag on the top of the conveyor belt 4, keeping the end of the woven bag to be sealed flat. Then, the conveyor belt 4 drives the woven bag to move at a uniform speed. When one end of the woven bag passes under the sewing machine 2, the sewing machine 2 sews and seals the end of the woven bag.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sewing and pressing device for woven bags, characterized in that: The device includes a workbench, on top of which is a sewing machine. A mounting groove is located on the top of the workbench on one side of the sewing machine. A conveyor belt for moving a woven bag relative to the sewing machine is installed in the mounting groove. The conveyor belt extends horizontally. Lifting seats are respectively located in the mounting grooves at both ends of the conveyor belt's length direction. The lifting seats are driven up and down by a power mechanism. Support plates are fixedly installed on the lifting seats. Support rollers extending along the width direction of the conveyor belt are rotatably installed on the support plates. A pressure belt is sleeved on the outer side of the two support rollers, and the pressure belt surrounds the outside of the conveyor belt. A tensioning roller is provided in the mounting groove to keep the pressure belt taut.

2. The woven bag sewing and pressing device as described in claim 1, characterized in that: A vertically extending guide rod is fixedly installed in the mounting groove, and the lifting seat is slidably installed on the guide rod.

3. The woven bag sewing and pressing device as described in claim 2, characterized in that: The power mechanism includes a lead screw driven by a motor, the lead screw being arranged parallel to the guide rod, and the lifting seat being screwed onto the lead screw.

4. The woven bag sewing and pressing device as described in claim 1, characterized in that: Guide rollers are rotatably mounted in the mounting grooves located below the two support rollers. The guide rollers and the tension rollers are arranged parallel to the support rollers, and the guide rollers are supported on the inner side of the pressing belt. A vertically extending slide rod is fixedly mounted on the bottom wall of the mounting groove, and a mounting plate is slidably mounted on the slide rod. A spring connects the mounting plate to the bottom wall of the mounting groove. The tension roller is rotatably mounted on the top of the mounting plate and is supported on the bottom of the pressing belt between the two guide rollers.

5. The woven bag sewing and pressing device as described in claim 1, characterized in that: The width of the compression belt is smaller than the width of the conveyor belt.

6. The woven bag sewing and pressing device as described in claim 1, characterized in that: The top of the conveyor belt is flush with the top of the workbench.

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