Woven bag body conveying and tensioning device

Abstract

The utility model discloses a woven bag body conveying and tensioning device which comprises two sets of plate bodies, a first roller body and a second roller body are connected between the two sets of plate bodies in a rotating mode, frame bodies are installed at the bottoms of the two sets of plate bodies respectively, a third roller body is connected between the two sets of frame bodies in a rotating mode, and two sets of connecting plates are fixed to the third roller body. And a rotating roller is rotationally connected between the two sets of connecting plates, and the woven bag body sequentially penetrates through the first roller body, the rotating roller and the second roller body to form a V-shaped conveying track. Compared with the prior art, the rotating roller can generate downward force under the action of the gravity of the rotating roller, and the woven bag belt body penetrates through the bottom of the rotating roller, so that the woven bag belt body can support the rotating roller, and the rotating roller can enable the woven bag belt body to be always kept in a tensioning state in the conveying process by utilizing the gravity of the rotating roller; therefore, the cost of the tensioning device is reduced, and the service life is long.

Description

Technical Field

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

[0002] Plastic woven bags are widely used for high-end product packaging, brand promotion, and gift-giving due to their easy-to-print material. They also have excellent physical and chemical properties, such as high tensile strength, wear resistance, and resistance to acid and alkali corrosion, which makes woven bags more durable and stable.

[0003] In the production process of plastic woven bags, double-layered tape is cut and heat-sealed into individual woven bags. Therefore, when producing woven bags, the rolls of tape need to be conveyed. During the conveying process, in order to keep the tape taut, a tensioning device is installed on the production line.

[0004] Existing tensioning devices consist of tensioning rollers and cylinders. The cylinders can drive the tensioning rollers to change position, thereby maintaining the belt in a tensioned state by changing the belt's conveying path when the belt is slack. However, this type of tensioning device requires a cylinder as a driving device, which increases costs and also shortens the lifespan of the driving device due to frequent operation. Utility Model Content

[0005] The main purpose of this utility model is to provide a tensioning device for conveying woven bag belts. The rotating roller generates a downward force under its own weight. Since the woven bag belt passes through the bottom of the rotating roller, the woven bag belt supports the rotating roller. Thus, the rotating roller can use its own weight to keep the woven bag belt in a taut state during the conveying process, thereby reducing the cost of the tensioning device and having a good service life.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A woven bag conveyor tensioning device includes two sets of plates, with a first roller and a second roller rotatably connected between the two sets of plates. Frames are respectively installed at the bottom of the two sets of plates, and a third roller is rotatably connected between the two sets of frames. Two sets of connecting plates are fixed on the third roller, and a rotating roller is rotatably connected between the two sets of connecting plates. The woven bag conveyor passes through the first roller, the rotating roller, and the second roller in sequence to form a V-shaped conveying trajectory.

[0008] Furthermore, a connecting block is fixed on one of the sets of the frame, the connecting block is connected to one of the sets of the connecting plates via a linkage assembly, and a proximity sensor is also connected to the connecting block.

[0009] Furthermore, the linkage assembly includes a first rod body rotatably connected to the connecting block and a second rod body rotatably connected to one of the connecting plates. The second rod body has a waist-shaped groove, and a positioning rod is fixed at one end of the first rod body. One end of the positioning rod passes through the waist-shaped groove and is fixed with a limit plate.

[0010] Furthermore, a limiting rod is also connected to the connecting block. The limiting rod is located above the first rod body and is used to limit the maximum angle of rotation of the first rod body.

[0011] Furthermore, the rotating roller includes two sets of rotating plates, and multiple sets of connecting rods are connected between the two sets of rotating plates. The multiple sets of connecting rods are equidistantly distributed along the circumference of the rotating plates.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The rotating roller of this invention generates a downward force under its own weight. Since the woven bag belt passes through the bottom of the rotating roller, the woven bag belt supports the rotating roller. Thus, the rotating roller can use its own weight to keep the woven bag belt in a taut state during the conveying process, thereby reducing the cost of the tensioning device and having a good service life.

[0014] After the rotating roller of this invention rotates downward to a certain angle, the proximity sensor can detect the approach of the first rod. At this time, the proximity sensor can send a signal to the controller of the production line, thereby causing the conveying device to increase the conveying speed. Then, the force of the woven bag belt itself is used to rotate the rotating roller to the high point, so that when the woven bag belt is relaxed, the rotating roller can rotate downward again to keep the woven bag belt in a taut state.

[0015] The limiting rod of this invention is located above the first rod body to limit the maximum angle of rotation of the first rod body, thereby preventing the first rod body from directly colliding with the proximity sensor and ensuring the service life of the proximity sensor.

[0016] The rotating roller of this invention contacts the woven bag belt through multiple sets of connecting rods, thereby reducing the contact area between the rotating roller and the woven bag belt, and thus reducing the friction between the two, so as to facilitate the conveying of the belt. Attached Figure Description

[0017] Figure 1 This is an overall schematic diagram of a woven bag conveyor tensioning device according to the present invention.

[0018] Figure 2 This is a schematic diagram of the rotating roller structure of a woven bag conveyor tensioning device according to the present invention.

[0019] Figure 3This is a schematic diagram of the connecting rod assembly and connecting block connection of a woven bag conveyor tensioning device according to the present invention.

[0020] Figure 4 This is a schematic diagram of the conveying path of a woven bag conveying tensioning device according to the present invention.

[0021] In the diagram: 1. Plate; 2. Frame; 3. First roller; 4. Second roller; 5. Connecting plate; 6. Rotating roller; 601. Connecting rod; 602. Rotating plate; 7. Linkage assembly; 701. Second rod; 702. Waist-shaped groove; 703. Limiting plate; 704. Positioning rod; 705. First rod; 8. Connecting block; 9. Proximity sensor; 10. Limiting rod; 11. Third roller. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figure 1-4 As shown, a woven bag conveyor tensioning device includes two sets of plates 1, with a first roller 3 and a second roller 4 rotatably connected between the two sets of plates 1. The first roller 3 and the second roller 4 are located at the two ends of the plates 1, respectively. A frame 2 is installed at the bottom of the two sets of plates 1, and a third roller 11 is rotatably connected between the two sets of frame 2. Two sets of connecting plates 5 are fixed on the third roller 11, and a rotating roller 6 is rotatably connected between the two sets of connecting plates 5. The rotating roller 6 is located below the middle position of the first roller 3 and the second roller 4.

[0024] In this embodiment, such as Figure 4 As shown, the woven bag belt on the production line unfolds from the unwinding machine, then passes sequentially through the top of the first roller 3, the bottom of the rotating roller 6, and the top of the second roller 4 to form a V-shaped conveying track, and finally connects to the conveying mechanism on the production line. During this process, since the third roller 11 can rotate and the rotating roller 6 is connected to the third roller 11 through the connecting plate 5, the rotating roller 6 will generate a downward force under its own weight. Since the woven bag belt passes through the bottom of the rotating roller 6, the woven bag belt will support the rotating roller 6, so that the rotating roller 6 can use its own weight to keep the woven bag belt in a taut state during the conveying process.

[0025] Among them, such as Figure 1 , Figure 2 and Figure 3As shown, a connecting block 8 is fixed on one of the frame bodies 2. The connecting block 8 is connected to one of the connecting plates 5 through a connecting rod assembly 7. A proximity sensor 9 is also connected to the connecting block 8. The connecting rod assembly 7 includes a first rod 705 rotatably connected to the connecting block 8 and a second rod 701 rotatably connected to one of the connecting plates 5. The second rod 701 has a waist-shaped groove 702. A positioning rod 704 is fixed to one end of the first rod 705. One end of the positioning rod 704 passes through the waist-shaped groove 702 and is fixed with a limit plate 703. The proximity sensor 9 is located below the first rod 705.

[0026] As the rotating roller 6 rotates downwards, the connecting plate 5 rotates accordingly, causing the first rod 705 of the connecting rod assembly 7 to rotate as well. When the rotating roller 6 rotates downwards to a certain angle, the proximity sensor 9 can detect the approach of the first rod 705. At this time, the proximity sensor 9 can send a signal to the production line controller, thereby increasing the conveying speed of the conveying device (the conveying device is existing technology, consisting of two adjacent rollers with the belt located between the two rollers. The two rollers are driven to rotate by a motor to clamp the belt for conveying. This is existing technology and will not be elaborated on here). The rotating roller 6 is rotated to a higher point using the force of the woven bag belt itself, so as to control the tension of the woven bag belt within the required range.

[0027] Among them, such as Figure 3 As shown, a limiting rod 10 is also connected to the connecting block 8. The limiting rod 10 is located above the first rod body 705 to limit the maximum angle of rotation of the first rod body 705, thereby preventing the first rod body 705 from directly colliding with the proximity sensor 9 and ensuring the service life of the proximity sensor 9.

[0028] like Figure 2 As shown, the rotating roller 6 includes two sets of rotating plates 602, and multiple sets of connecting rods 601 are connected between the two sets of rotating plates 602. The multiple sets of connecting rods 601 are equidistantly distributed along the circumference of the rotating plates 602. The rotating roller 6 contacts the woven bag belt through the multiple sets of connecting rods 601, thereby reducing the contact area between the rotating roller 6 and the woven bag belt, and thus reducing the friction between the two, so as to facilitate the conveying of the belt.

[0029] Working principle: The unwinding machine unfolds the rolled woven bag strip, then the strip passes sequentially through the top of the first roller 3, the bottom of the rotating roller 6, and the top of the second roller 4, forming a V-shaped conveying path. Finally, it connects to the conveying mechanism on the production line. During this process, because the third roller 11 can rotate, and the rotating roller 6 is connected to the third roller 11 via the connecting plate 5, the rotating roller 6 generates a downward force under its own weight. Since the woven bag strip passes through the bottom of the rotating roller 6, it supports the rotating roller 6, allowing the rotating roller 6 to maintain tension throughout the conveying process using its own weight. As the rotating roller 6 rotates downwards, the strip... The connecting plate 5 will rotate accordingly, causing the first rod 705 of the connecting rod assembly 7 to rotate as well. When the rotating roller 6 rotates downward to a certain angle, the proximity sensor 9 can detect the approach of the first rod 705. At this time, the proximity sensor 9 can send a signal to the production line controller, thereby causing the conveying device to increase the conveying speed. The force of the woven bag belt itself will rotate the rotating roller 6 to the highest point, so as to control the tension of the woven bag belt within the required range. The limiting rod 10 is located above the first rod 705 to limit the maximum angle of rotation of the first rod 705, thereby preventing the first rod 705 from directly colliding with the proximity sensor 9, so as to ensure the service life of the proximity sensor 9.

[0030] 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 illustrative of the principles of this 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 claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A woven bag conveyor tensioning device, comprising two sets of plates (1), wherein a first roller (3) and a second roller (4) are rotatably connected between the two sets of plates (1), characterized in that: The bottom of the two sets of plate bodies (1) are respectively equipped with frame bodies (2), and a third roller body (11) is rotatably connected between the two sets of frame bodies (2). Two sets of connecting plates (5) are fixed on the third roller body (11), and a rotating roller (6) is rotatably connected between the two sets of connecting plates (5). The first roller body (3), the rotating roller (6), and the second roller body (4) are used to guide the woven bag belt to be conveyed in a V-shaped trajectory.

2. The woven bag conveyor tensioning device according to claim 1, characterized in that: One of the frames (2) is fixed with a connecting block (8), which is connected to one of the connecting plates (5) via a connecting rod assembly (7). A proximity sensor (9) is also connected to the connecting block (8).

3. The woven bag conveyor tensioning device according to claim 2, characterized in that: The linkage assembly (7) includes a first rod (705) rotatably connected to the connecting block (8) and a second rod (701) rotatably connected to one of the connecting plates (5). The second rod (701) has a waist-shaped groove (702). A positioning rod (704) is fixed at one end of the first rod (705). One end of the positioning rod (704) passes through the waist-shaped groove (702) and is fixed with a limit plate (703). The proximity sensor (9) is located below the first rod (705).

4. The woven bag conveyor tensioning device according to claim 3, characterized in that: A limiting rod (10) is also connected to the connecting block (8). The limiting rod (10) is located above the first rod body (705) to limit the maximum angle of rotation of the first rod body (705).

5. The woven bag conveyor tensioning device according to claim 1, characterized in that: The rotating roller (6) includes two sets of rotating plates (602), and multiple sets of connecting rods (601) are connected between the two sets of rotating plates (602). The multiple sets of connecting rods (601) are distributed at equal intervals along the circumference of the rotating plates (602).

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