Bottom sewing device for woven bag production

Abstract

The utility model discloses a woven bag production bottom sewing device which comprises a base, and a plurality of sets of conveying assemblies are installed at the upper end of the base. The pressing mechanism comprises a plurality of vertical rods fixedly connected to the upper end of the base, the upper ends of the vertical rods are jointly and fixedly connected with a top plate, a first electric telescopic rod is installed at the lower end of the top plate, and the telescopic end of the first electric telescopic rod is fixedly connected with a sliding plate; two U-shaped frames are symmetrically and fixedly connected to the lower end of the sliding plate, and pressing rollers are rotationally connected to the opposite sides of the two vertical parts of each U-shaped frame; the guide mechanism is used for guiding the bottom of the woven bag, and a scale layer is arranged on one of the vertical rods. In the use process, the device can adapt to woven bags with different thicknesses, so that the adaptability of actual use is improved, in addition, the guide mechanism is arranged, and the situation that a sewing line deviates can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of woven bag production technology, and in particular to a woven bag production bottom sewing device. Background Technology

[0002] Woven bags, also known as snake skin bags, are a type of plastic bag used for packaging. Their raw materials are generally polyethylene, polypropylene and other chemical plastic raw materials. Woven bag manufacturers melt and cut the blank into single units with openings at both ends, while ensuring that the inner bag at one end of the single unit is heat-sealed. Finally, the bottom of the heat-sealed end of the inner bag is sewn by a sewing machine.

[0003] A search revealed a utility model patent with publication number CN218540007U, which discloses a woven bag production bottom sewing device, including a base, a sewing machine head, and a conveyor belt. A feeding component for feeding woven bags with sewn bottoms is fixedly connected to the side of the base away from the sewing machine head. The feeding component includes a feeding rod for pulling the woven bag off the conveyor belt on the upper surface of the base. A conveying component for conveying the woven bag after feeding is fixedly connected to the bottom of the base on the same side as the feeding rod.

[0004] In practical use, we found that the above-mentioned device lacks a guiding structure. When placing the bag, it is impossible to determine whether the bottom of the woven bag is completely horizontal. If the sealing line produced by the sewing head is not completely horizontal, the sewing line is prone to tilting, which will affect the quality of the finished product. In addition, the guide wheel part of the above-mentioned device for pressing cannot be adjusted, so it cannot adapt to woven bags of different thicknesses. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a bottom-sewing device for woven bag production. This device can adapt to woven bags of different thicknesses during use, thereby improving its adaptability in practical applications. In addition, a guiding mechanism is provided to prevent the sewing thread from shifting.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A woven bag production bottom-sewing device includes a base with multiple sets of conveying components mounted on its upper end; a pressing mechanism including multiple vertical rods fixedly connected to the upper end of the base, a top plate fixedly connected to the upper end of the multiple vertical rods, a first electric telescopic rod mounted on the lower end of the top plate, a sliding plate fixedly connected to the telescopic end of the first electric telescopic rod, two U-shaped frames symmetrically fixedly connected to the lower end of the sliding plate, and pressing rollers rotatably connected to the two opposite sides of the two vertical parts of each U-shaped frame; and a guiding mechanism for guiding the bottom of the woven bag.

[0008] Preferably, one of the vertical rods is provided with a scale layer.

[0009] Preferably, all of the vertical rods pass through the sliding plate and are slidably connected.

[0010] Preferably, a U-shaped connecting plate is fixedly connected to the rear side of the base, and a sewing assembly is installed at the lower end of the upper horizontal part of the U-shaped connecting plate.

[0011] Preferably, the guiding mechanism includes a second electric telescopic rod fixedly connected to the front side of the vertical part of the U-shaped connecting plate, and a guide plate is fixedly connected to the telescopic end of the second electric telescopic rod.

[0012] Preferably, the front side of the guide plate is horizontal and is arranged parallel to the multiple conveying components.

[0013] Compared with the prior art, the advantages of this utility model are as follows:

[0014] The pressure roller keeps the woven bag pressed, preventing it from shifting during movement or sewing. The sliding plate moves up and down via the first electric telescopic rod, which in turn moves the pressure roller, allowing for automatic adjustment to woven bags of different thicknesses. Additionally, a guide plate is provided, allowing the user to place the bottom of the woven bag close to the guide plate to prevent tilting during subsequent sewing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a woven bag production bottom sewing device proposed in this utility model;

[0016] Figure 2 for Figure 1 The diagram on the left;

[0017] Figure 3 for Figure 1 A diagram showing the view from the left rear.

[0018] In the diagram: 1. Base, 2. Vertical rod, 3. Top plate, 4. First electric telescopic rod, 5. Sliding plate, 6. Conveying assembly, 7. U-shaped frame, 8. Pressure roller, 9. Scale layer, 10. U-shaped connecting plate, 11. Sewing assembly, 12. Second electric telescopic rod, 13. Guide plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figures 1-3A woven bag production bottom sewing device includes a base 1, with multiple sets of conveying components 6 installed on the upper end of the base 1. Each set of conveying components 6 consists of an installation groove, two conveying rollers, and an annular conveying bag. A motor is installed on the input shaft of one of the conveying rollers to realize drive operation.

[0021] The system also includes a pressing mechanism, which consists of multiple vertical rods 2 fixedly connected to the upper end of the base 1. One of the vertical rods 2 is provided with a scale layer 9. The upper ends of the multiple vertical rods 2 are fixedly connected to a top plate 3. The lower end of the top plate 3 is equipped with a first electric telescopic rod 4. The telescopic end of the first electric telescopic rod 4 is fixedly connected to a sliding plate 5. The multiple vertical rods 2 all pass through the sliding plate 5 and are slidably connected. The lower end of the sliding plate 5 is symmetrically fixedly connected to two U-shaped frames 7. Each U-shaped frame 7 has two vertical parts on opposite sides rotatably connected to pressing rollers 8. When the lower end face of the pressing roller 8 is just in contact with the upper end face of the conveying component 6, the lower end face of the sliding plate 5 is just aligned with the zero mark of the scale layer 9.

[0022] Among them, a U-shaped connecting plate 10 is fixedly connected to the rear side of the base 1, and a sewing assembly 11 is installed at the lower end of the upper horizontal part of the U-shaped connecting plate 10. The sewing assembly 11 consists of a telescopic assembly and a sewing head. The telescopic assembly can be an electric telescopic rod.

[0023] It also includes a guiding mechanism for guiding the bottom of the woven bag. The guiding mechanism includes a second electric telescopic rod 12 fixedly connected to the front side of the vertical part of the U-shaped connecting plate 10. The telescopic end of the second electric telescopic rod 12 is fixedly connected to a guide plate 13. The front side of the guide plate 13 is horizontal and is arranged parallel to the multiple conveying components 6.

[0024] In this invention, when sewing the bottom, the second electric telescopic rod 12 is activated first, causing the guide plate 13 to move forward and the front end of the guide plate 13 to a suitable position (i.e., when the bottom of the woven bag contacts the guide plate 13, it is ready to be completely sewn). The user first brings the bottom of the woven bag close to the guide plate 13 so that the sewing will not be tilted. Then, the second electric telescopic rod 12 is activated to retract, causing the guide plate 13 to move back. Then, the conveying component 6 is activated to convey the bag, and the sewing is performed at the sewing component 11. The pressure roller 8 is used to keep the woven bag in a pressed state, avoiding the occurrence of deviation during the movement or sewing process.

[0025] The sliding plate 5 can be moved up and down by the first electric telescopic rod 4, thereby achieving height adjustment to accommodate woven bags of different thicknesses.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for sewing the bottom of woven bags, characterized in that, include: The base (1) has multiple sets of conveying components (6) installed on its upper end. The pressing mechanism includes multiple vertical rods (2) fixedly connected to the upper end of the base (1). The upper ends of the multiple vertical rods (2) are fixedly connected to a top plate (3). The lower end of the top plate (3) is equipped with a first electric telescopic rod (4). The telescopic end of the first electric telescopic rod (4) is fixedly connected to a sliding plate (5). The lower end of the sliding plate (5) is symmetrically fixedly connected to two U-shaped frames (7). Each U-shaped frame (7) has two vertical parts rotatably connected to pressing rollers (8) on opposite sides. A guiding mechanism is used to guide the bottom of the woven bag.

2. The woven bag production bottom-sewing device according to claim 1, characterized in that, One of the vertical rods (2) is provided with a scale layer (9).

3. The woven bag production bottom-sewing device according to claim 1, characterized in that, All of the vertical rods (2) pass through the sliding plate (5) and are slidably connected.

4. The woven bag production bottom-sewing device according to claim 1, characterized in that, A U-shaped connecting plate (10) is fixedly connected to the rear side of the base (1), and a sewing assembly (11) is installed at the lower end of the upper horizontal part of the U-shaped connecting plate (10).

5. A woven bag production bottom-sewing device according to claim 4, characterized in that, The guiding mechanism includes a second electric telescopic rod (12) fixedly connected to the front side of the vertical part of the U-shaped connecting plate (10), and a guide plate (13) is fixedly connected to the telescopic end of the second electric telescopic rod (12).

6. The woven bag production bottom-sewing device according to claim 5, characterized in that, The front side of the guide plate (13) is horizontal and is arranged parallel to the multiple conveying components (6).

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