A plastic woven bag processing edge folding device

Abstract

This utility model discloses a plastic woven bag processing and folding device, relating to the field of woven bag folding technology. It includes a conveyor belt with fixed plates fixedly connected to its front and rear sides. A folding plate is fixedly connected to the top of each fixed plate, and a fixed frame is fixedly connected to the front of the folding plate. Two limiting plates are fixedly connected to the bottom of the fixed frame. A first telescopic rod drives a slider to move a support plate, actively opening and smoothing any skewed or wrinkled openings at the top of the woven bag, ensuring the bag opening is flat and relaxed, providing ideal initial conditions for subsequent folding operations. A cleaning roller, mounted on a sliding sleeve and a first vertical plate, contacts the bag opening area as the mechanism moves. Its rotation effectively removes dust, debris, or residual materials that may be attached to the bag opening, preventing impurities from being caught in the folding process or affecting the bonding effect, further ensuring the quality and aesthetics of the folded edges.

Description

Technical Field

[0001] This utility model relates to the field of folding edges of woven bags, and more particularly to a folding device for processing plastic woven bags. Background Technology

[0002] Plastic woven bags are primarily made of polypropylene or polyethylene and are widely used as packaging materials for fertilizers, chemical products, and other items. Their main production process involves extruding plastic raw materials into film, cutting, and unidirectionally stretching them into flat filaments, which are then woven together to create the final product. With the development and application of flexible container bags (FIBCs), plastic woven bags are widely used in transportation packaging of industrial and agricultural products. In agricultural product packaging, plastic woven bags are widely used for aquatic product packaging, poultry feed packaging, covering materials for farms, and shading, wind protection, and hail protection for crop cultivation.

[0003] When materials are placed inside a plastic woven bag, the top of the bag opening may become crooked, which will affect the subsequent folding effect. Therefore, pretreatment is required to improve the folding effect. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a folding device for processing plastic woven bags, which solves the problems mentioned in the background.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a plastic woven bag processing and folding device, comprising a conveyor belt, with fixed plates fixedly connected to the front and rear sides of the conveyor belt, a folding plate fixedly connected to the top of the fixed plates, a fixed frame fixedly connected to the front of the folding plate, two limiting plates fixedly connected to the bottom of the fixed frame, and abutment plates fixedly connected to the tops of the two limiting plates, with a folding plate hinged to the top of the limiting plates via push rods, a gate-shaped plate fixedly connected to the top of the fixed plates, and a pre-processing mechanism provided at the bottom of the gate-shaped plate, the pre-processing mechanism including a vertical rod fixedly connected to the bottom of the gate-shaped plate. A horizontal plate is fixedly connected to the bottom of the vertical rod. A first telescopic rod is fixedly connected inside the horizontal plate. A slider is fixedly connected to the right end of the first telescopic rod. The slider is slidably connected inside the horizontal plate. A support plate is fixedly connected to the bottom of the slider via a second telescopic rod. A plastic woven bag filled with materials is placed on a conveyor belt and conveyed forward with the conveyor belt. When the woven bag is conveyed to the bottom of the gate-shaped plate, the pre-processing mechanism starts to work. The second telescopic rod drives the support plate to lower, and the first telescopic rods on both sides are activated to drive the two sliders to slide inside the horizontal plate. The two sliders drive the support plate at their bottom to move towards the skewed bag opening at the top of the woven bag. The support plate opens the bag opening and smooths and corrects it.

[0006] As a further technical solution of this utility model, a fixing rod is fixedly connected to the inner wall of the door-shaped plate, a sliding sleeve is slidably connected to the outer wall of the fixing rod, and a connecting rod is rotatably connected between the sliding sleeve and the slider.

[0007] As a further technical solution of this utility model, a first vertical plate is fixedly connected to the bottom of the sliding sleeve, and a number of cleaning rollers are rotatably connected to the front of the first vertical plate.

[0008] As a further technical solution of this utility model, the number of the fixed rod, sliding sleeve, connecting rod, first vertical plate and cleaning roller is two, and they are set on the front and rear inner walls of the gate-shaped plate. When the slider moves outward, it will drive the sliding sleeve to slide on the fixed rod through the connecting rod, thereby driving the first vertical plate at the bottom of the sliding sleeve to move, so as to drive the cleaning roller to contact the bag opening area, and brush away the dust, debris or residual materials attached to the bag opening through the cleaning roller.

[0009] As a further technical solution of this utility model, a centering mechanism is provided at the bottom of the first vertical plate, and the centering mechanism includes a second vertical plate, which is fixedly connected to the bottom of the first vertical plate.

[0010] As a further technical solution of this utility model, a connecting plate is fixedly connected to the front of the second vertical plate, and an elastic rod is fixedly connected to the front of the connecting plate.

[0011] As a further technical solution of this utility model, a spring is sleeved on the outer wall of the elastic rod, and a centering plate is fixedly connected to the front of the elastic rod. When the first vertical plates on the front and rear sides move inward synchronously, they will drive the second vertical plate to move, which in turn drives the connecting plate to move. Thus, the centering plate is driven to move through the elastic rod. Under the action of the spring and the elastic rod, the centering plate elastically presses against both sides of the woven bag. The centering plate applies a gentle guiding force, forcing the bag to return to the center line of the conveyor belt, ensuring its centered operation. After processing, the push rod drives the support plate to rise, so that the woven bag is conveyed again. The bag mouth first contacts the specific inclined surface or structure of the folding plate, and begins preliminary guidance or pre-folding. The bag mouth continues to move forward, constrained and guided by the limiting plate and the abutment plate. Under the action of the push rod, the folding plate rotates around the hinge point between itself and the top of the limiting plate.

[0012] This utility model provides a folding device for processing plastic woven bags, which has the following advantages compared with the prior art:

[0013] 1. This design discloses a folding device for processing plastic woven bags. A first telescopic rod drives a slider to move a support plate, actively opening and smoothing any slanted or wrinkled openings at the top of the woven bag. This ensures the bag opening is flat and well-proportioned, providing ideal initial conditions for subsequent folding operations. Cleaning rollers mounted on the sliding sleeve and the first vertical plate contact the bag opening area as the mechanism moves. Their rotation effectively removes dust, debris, or residual materials that may be attached to the bag opening, preventing impurities from being drawn in during the folding process or affecting the bonding effect, further ensuring the quality and aesthetics of the folded edges.

[0014] 2. This design presents a folding device for processing plastic woven bags. An elastic rod, in conjunction with a spring, elastically presses a centering plate against both sides of the woven bag. This automatically adapts to the bag width and applies a gentle guiding force to the bag, ensuring it always runs along the center line of the conveyor belt. By forcibly positioning the woven bag in the center, it effectively solves problems such as asymmetrical and skewed folding caused by bag deviation. This ensures that subsequent folding plate operations are performed based on the correct positioning of the bag, greatly improving the accuracy and consistency of the folding. Attached Figure Description

[0015] Figure 1 A front view of a folding device for processing plastic woven bags;

[0016] Figure 2 A partial view of a folding device for processing plastic woven bags;

[0017] Figure 3 A partially enlarged view of the pretreatment mechanism of a plastic woven bag folding device;

[0018] Figure 4 This is a partial view of the centering mechanism of a folding device for processing plastic woven bags.

[0019] In the diagram: 1. Conveyor belt; 2. Fixed plate; 3. Folding plate; 4. Fixed frame; 5. Limiting plate; 6. Contact plate; 7. Folding plate; 8. Gate-shaped plate; 9. Pre-treatment mechanism; 911. Vertical rod; 912. Horizontal plate; 913. First telescopic rod; 914. Sliding block; 915. Support plate; 916. Fixed rod; 917. Sliding sleeve; 918. Connecting rod; 919. First vertical plate; 920. Cleaning roller; 10. Centering mechanism; 1001. Second vertical plate; 1002. Connecting plate; 1003. Elastic rod; 1004. Spring; 1005. Centering plate. Detailed Implementation

[0020] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a technical solution for a plastic woven bag processing and folding device: A plastic woven bag processing and folding device includes a conveyor belt 1, with fixed plates 2 fixedly connected to the front and rear sides of the conveyor belt 1 respectively. A folding plate 3 is fixedly connected to the top of the fixed plate 2, and a fixed frame 4 is fixedly connected to the front of the folding plate 3. Two limiting plates 5 are fixedly connected to the bottom of the fixed frame 4, and abutment plates 6 are fixedly connected to the top of the two limiting plates 5 respectively. A folding plate 7 is hinged to the top of the limiting plates 5 through a push rod. A gate-shaped plate 8 is fixedly connected to the top of the fixed plate 2, and a pre-processing machine is provided at the bottom of the gate-shaped plate 8. Structure 9, the pretreatment mechanism 9 includes a vertical rod 911, which is fixedly connected to the bottom of the portal plate 8. A horizontal plate 912 is fixedly connected to the bottom of the vertical rod 911. A first telescopic rod 913 is fixedly connected inside the horizontal plate 912. A slider 914 is fixedly connected to the right end of the first telescopic rod 913. The slider 914 is slidably connected inside the horizontal plate 912. A support plate 915 is fixedly connected to the bottom of the slider 914 via a second telescopic rod. A plastic woven bag containing materials is placed on the conveyor belt 1 and conveyed forward with the conveyor belt 1. When the woven bag is conveyed to below the portal plate 8, the pretreatment mechanism... 9. Work begins. The second telescopic rod drives the support plate 915 to lower. The first telescopic rods 913 on both sides are activated, driving the two sliders 914 to slide inside the horizontal plate 912. The two sliders 914 drive the support plate 915 at their bottom to move towards the skewed bag opening at the top of the woven bag. The support plate 915 opens the bag opening, smoothing and correcting it. A fixing rod 916 is fixedly connected to the inner wall of the gate-shaped plate 8. A sliding sleeve 917 is slidably connected to the outer wall of the fixing rod 916. A connecting rod 918 is rotatably connected between the sliding sleeve 917 and the slider 914. The bottom of the sliding sleeve 917 is fixedly connected to the first vertical plate 91. 9. Several cleaning rollers 920 are rotatably connected to the front of the first vertical plate 919. The number of fixed rod 916, sliding sleeve 917, connecting rod 918, first vertical plate 919 and cleaning roller 920 is two, and they are set on the front and rear inner walls of the gate plate 8. When the slider 914 moves outward, it will drive the sliding sleeve 917 to slide on the fixed rod 916 through the connecting rod 918, thereby driving the first vertical plate 919 at the bottom of the sliding sleeve 917 to move, so as to drive the cleaning roller 920 to contact the bag opening area, and brush away the dust, debris or residual material attached to the bag opening through the cleaning roller 920.

[0022] like Figure 4As shown, a plastic woven bag processing hemming device includes a centering mechanism 10 at the bottom of a first vertical plate 919. The centering mechanism 10 includes a second vertical plate 1001, which is fixedly connected to the bottom of the first vertical plate 919. A connecting plate 1002 is fixedly connected to the front of the second vertical plate 1001, and an elastic rod 1003 is fixedly connected to the front of the connecting plate 1002. A spring 1004 is sleeved on the outer wall of the elastic rod 1003, and a centering plate 1005 is fixedly connected to the front of the elastic rod 1003. When the first vertical plates 919 on both sides move inward synchronously, they drive the second vertical plate 1001 to move, which in turn drives the connecting plate 1002 to move, thereby... The elastic rod 1003 drives the centering plate 1005 to move. Under the action of the spring 1004 and the elastic rod 1003, the centering plate 1005 elastically presses against both sides of the woven bag. The centering plate 1005 applies a gentle guiding force, forcing the bag back to the center line of the conveyor belt 1 to ensure its centered operation. After processing, the push rod drives the support plate 915 to rise, so that the woven bag is conveyed again. The bag mouth first contacts the specific inclined surface or structure of the folding plate 3 and begins to be initially guided or pre-folded. The bag mouth continues to move forward, constrained and guided by the limiting plate 5 and the abutment plate 6. Under the action of the push rod, the folding plate 7 rotates around the hinge point at the top of the limiting plate 5.

[0023] The working principle of this utility model is as follows: A plastic woven bag containing materials is placed on a conveyor belt 1 and conveyed forward with the conveyor belt 1. When the woven bag is conveyed to the bottom of the gate plate 8, the pre-processing mechanism 9 starts to work. The second telescopic rod drives the support plate 915 to be lowered. The first telescopic rods 913 on both sides are activated, which drive the two sliders 914 to slide inside the horizontal plate 912. The two sliders 914 drive the support plate 915 at the bottom of them to move towards the skewed bag opening at the top of the woven bag. The support plate 915 opens the bag opening and smooths and corrects it. When the sliders 914 move outward, they will drive the sliding sleeve 917 to slide on the fixed rod 916 through the connecting rod 918, thereby driving the first vertical plate 919 at the bottom of the sliding sleeve 917 to move. This drives the cleaning roller 920 to contact the bag opening area. The cleaning roller 920 brushes away the dust, debris or residual materials attached to the bag opening.

[0024] When the first vertical plates 919 on both the front and rear sides move inward synchronously, they will drive the second vertical plate 1001 to move, which in turn drives the connecting plate 1002 to move. This, in turn, drives the centering plate 1005 to move through the elastic rod 1003. Under the action of the spring 1004 and the elastic rod 1003, the centering plate 1005 elastically presses against both sides of the woven bag. The centering plate 1005 applies a gentle guiding force, forcing the bag to return to the center line of the conveyor belt 1, ensuring its centered operation. After processing, the push rod drives the support plate 915 to rise, allowing the woven bag to be conveyed again. The bag opening first contacts the specific inclined surface or structure of the folding plate 3, and begins preliminary guidance or pre-folding. The bag opening continues to move forward, constrained and guided by the limiting plate 5 and the abutment plate 6. Under the action of the push rod, the folding plate 7 rotates around its hinge point with the top of the limiting plate 5.

[0025] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A plastic woven bag processing edge folding device comprising a conveyor belt (1), characterized in that, The front and rear sides of the conveyor belt (1) are respectively fixedly connected to a fixing plate (2), the top of the fixing plate (2) is fixedly connected to a folded plate (3), the front of the folded plate (3) is fixedly connected to a fixing frame (4), the bottom of the fixing frame (4) is fixedly connected to two limiting plates (5), the top of the two limiting plates (5) is fixedly connected to a contact plate (6), the top of the limiting plate (5) is hinged to a folded edge plate (7) by a push rod, and the top of the fixing plate (2) is fixedly connected to a door-shaped plate (8). The bottom of the portal plate (8) is provided with a pre-processing mechanism (9). The pre-processing mechanism (9) includes a vertical rod (911), which is fixedly connected to the bottom of the portal plate (8). A horizontal plate (912) is fixedly connected to the bottom of the vertical rod (911). A first telescopic rod (913) is fixedly connected inside the horizontal plate (912). A slider (914) is fixedly connected to the right end of the first telescopic rod (913). The slider (914) is slidably connected inside the horizontal plate (912). A support plate (915) is fixedly connected to the bottom of the slider (914) through a second telescopic rod.

2. A device for processing the edge of a plastic woven bag according to claim 1, characterized in that, The inner wall of the gate-shaped plate (8) is fixedly connected to a fixing rod (916), the outer wall of the fixing rod (916) is slidably connected to a sliding sleeve (917), and a connecting rod (918) is rotatably connected between the sliding sleeve (917) and the slider (914).

3. The device according to claim 2, wherein The bottom of the sliding sleeve (917) is fixedly connected to a first vertical plate (919), and the front of the first vertical plate (919) is rotatably connected to a plurality of cleaning rollers (920).

4. The device according to claim 3, wherein The number of the fixed rod (916), sliding sleeve (917), connecting rod (918), first vertical plate (919), and cleaning roller (920) is two, and they are set on the front and rear inner walls of the gate-shaped plate (8).

5. A device for processing the edge of a plastic woven bag according to claim 4, wherein The bottom of the first vertical plate (919) is provided with a centering mechanism (10), the centering mechanism (10) includes a second vertical plate (1001), the second vertical plate (1001) is fixedly connected to the bottom of the first vertical plate (919).

6. A device for processing the edge of a plastic woven bag according to claim 5, wherein A connecting plate (1002) is fixedly connected to the front of the second vertical plate (1001), and an elastic rod (1003) is fixedly connected to the front of the connecting plate (1002).

7. A device for processing the edge of a plastic woven bag according to claim 6, characterized in that, A spring (1004) is sleeved on the outer wall of the elastic rod (1003), and a centering plate (1005) is fixedly connected to the front of the elastic rod (1003).

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