An adjustable model board for filtering bag flaps
The design of the adjustable template plate solves the problem of frequent template replacement in filter bag manufacturing, realizes an efficient and stable bag folding process, reduces costs and improves work efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TONGXIANG LANGYU PURIFICATION TECH CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-07-21
AI Technical Summary
The current filter bag manufacturing process requires templates of different widths, resulting in high costs and low work efficiency. Replacing the templates also increases the workload.
Design an adjustable template plate to achieve stable folding of the bag body by adjusting the distance between two templates and using a rotating roller and pressure roller structure, thus avoiding template replacement.
It reduces the cost of template replacement, improves work efficiency, and ensures the stability of the bag after folding.
Smart Images

Figure CN224528189U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filter bag manufacturing and processing, and in particular to an adjustable template for folding the edges of filter bags. Background Technology
[0002] During the manufacturing and processing of filter bags, two sheets of chemical fiber paper are first bonded together using an ultrasonic welding machine to form a bottomless bag with open ends. Then, the bag is passed between two templates on the left and right. As the paper bag passes through, the templates cause the sides of the paper bag to fold inward, making the bag three-dimensional. Different paper bags have different widths of inward folding, so templates of different widths are required. Preparing templates of various widths is costly, and the templates need to be replaced when making different paper bags, which increases the workload and reduces work efficiency. Utility Model Content
[0003] The purpose of this invention is to provide an adjustable template for folding the edges of filter bags. Its advantage is that the distance between the two templates can be changed, thus allowing different filter bags to be folded.
[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: An adjustable template for folding the edges of filter bags includes a frame, with connecting frames fixedly connected to both sides of the frame, and two horizontal guide rods fixedly connected between the two connecting frames. It also includes two movable rods, with the guide rods passing through the two movable rods and slidably connected to them. The two movable rods are parallel to each other. Furthermore, it includes two lead screws, each corresponding to one of the two movable rods. The two lead screws horizontally pass through the two connecting frames and the two movable rods, and are rotatably connected to the connecting frames. Corresponding lead screws and movable rods are threadedly connected. Each movable rod is connected to a horizontal template via a connector. A rotating roller is rotatably connected to the frame below the template.
[0005] Using the above technical solution, two rolls of chemical fiber paper are laminated together to form a double-layered bag. Then, both sides of the bag are folded inwards to a certain extent, creating grooves on each side. A connector raises two templates, moving them away from the rotating roller. The bag then passes between the two templates, which are embedded in the grooves on both sides of the bag. The connector then lowers the templates, simultaneously moving the bag downwards until the templates approach the rotating roller, bringing the bag into contact with it. The roller then presses against the bottom of the bag. After passing through the templates, the bag is placed into a conveying mechanism, which pulls the bag along, continuing the movement of the chemical fiber paper. The bag body is then formed by continuous lamination. The bag body moves through two templates, and under the action of the two templates, the two sides of the bag body fold inward. At the same time, the bag body is subjected to the pressure of the rotating rollers during its movement, which prevents the bag body from returning to its original shape and keeps the bag body in a folded-in state, increasing the stability of the bag body after folding. Depending on the different folding depths required for the sides of different bags, the screw is rotated, which drives the two moving levers to move. The two moving levers drive the two templates to move through the connecting parts, so that the two templates move away from or closer to each other, thereby allowing the templates to be embedded into the sides of the bag body at different depths. This eliminates the need to prepare multiple templates of different sizes, reducing costs.
[0006] Preferably, the connector includes a connecting plate and a bolt. Each movable bar is slidably connected to two connecting plates. The connecting plate has a vertical waist-shaped groove. Each connecting plate has a bolt passing through its groove. The tail of the bolt contacts the connecting plate. The bolt is threadedly connected to the movable bar. The template is fixedly connected to the two connecting plates on its corresponding movable bar.
[0007] Using the above technical solution, loosen the bolts on the moving bar that pass through the sliding groove of the connecting plate to reduce the pressure of the bolt tail on the connecting plate. Then the connecting plate can be moved up and down, and the connecting plate drives the template to move, so that the template moves closer to and away from the rotating roller.
[0008] Preferably, mounting plates are fixedly connected to both sides of the frame, and each mounting plate is vertically slidably connected to a slider. An adjustment mechanism is provided between the slider and the mounting plate. The frame also includes an upper pressure roller and a lower pressure roller. The upper pressure roller is located above the lower pressure roller. Both ends of the upper pressure roller are rotatably connected to the sliders on the two mounting plates, and both ends of the lower pressure roller are rotatably connected to the two mounting plates.
[0009] Using the above technical solution, the slider is moved upward by the adjustment mechanism, and the slider drives the upper pressure roller to rise, so that the upper pressure roller moves away from the lower pressure roller. The bag passes through the two templates, and after the two sides of the bag are folded inward, it is passed between the upper and lower pressure rollers. Then the bag is connected to the conveying mechanism, and the upper pressure roller is driven to descend through the connector to press down the bag, increase the stability of the bag after folding, and prevent the bag from returning to its original shape.
[0010] Preferably, the adjusting mechanism is a screw, which is vertically threaded to the side of the mounting plate, and the lower end of the screw is rotatably connected to the slider on the mounting plate.
[0011] Using the above technical solution, turning the screw pushes the slider up or down, and the slider drives the upper pressure roller up and down, adjusting the distance between the upper and lower pressure rollers.
[0012] Preferably, a rotating handle is fixedly connected to the end of the lead screw.
[0013] The above technical solution facilitates the rotation of the lead screw. Attached Figure Description
[0014] Figure 1 This is an overall schematic diagram of the embodiment; Figure 2 This is a side view of an embodiment; Figure 3 This is a top view of an embodiment; Figure 4 This is a front view of an embodiment; Figure 5 This is a schematic diagram showing the connection between the template and the guide rod; Figure 6 This is a schematic diagram showing the connection between the template and the movable bar.
[0015] Reference numerals: 1. Frame; 2. Connecting frame; 3. Guide rod; 4. Moving rod; 5. Lead screw; 6. Template; 7. Rotary roller; 8. Connecting plate; 9. Bolt; 10. Waist-shaped groove; 11. Mounting plate; 12. Slider; 13. Upper pressure roller; 14. Lower pressure roller; 15. Screw; 16. Rotary handle. Detailed Implementation
[0016] The following description is merely a preferred embodiment of this utility model, and the scope of protection is not limited to this embodiment. All technical solutions falling within the scope of this utility model should be considered within the protection scope of this utility model. It should also be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
[0017] See Figure 1An adjustable template for folding the edges of filter bags includes a frame 1, with connecting frames 2 fixedly connected to both sides of the frame 1. Two horizontal guide rods 3 are fixedly connected between the two connecting frames 2. It also includes two lead screws 5 and two movable levers 4. The two lead screws 5 pass horizontally through the two connecting frames 2 and are located between the two guide rods 3, rotatably connected to the connecting frames 2. The two movable levers 4 are located between the two connecting frames 2 and are parallel to each other. The guide rods 3 pass through the two movable levers 4 and are slidably connected to the movable levers 4. The two lead screws 5 pass through the two movable levers 4, and each lead screw 5 corresponds to one of the two movable levers 4, with the corresponding movable levers 4 threadedly connected to the lead screws 5.
[0018] See Figures 2 to 6 Each movable bar 4 is slidably connected to two connecting plates 8. The connecting plates 8 have vertical waist-shaped grooves 10. Each connecting plate 8 has a bolt 9 passing through its groove. The tail of the bolt 9 contacts the connecting plate 8. The bolt 9 is threadedly connected to the movable bar 4. The ends of the two connecting plates 8 located on the same movable bar 4 are fixedly connected to the same horizontal template 6. The frame 1 is rotatably connected to a horizontal rotating roller 7 located below the template 6.
[0019] See Figure 1 , Figure 2 and Figure 4 The frame 1 has two mounting plates 11 fixedly connected to its two sides. Each mounting plate 11 has a vertical groove, and a slider 12 is embedded in each groove. The slider 12 is slidably connected to the mounting plate 11. A vertical screw 15 passes through the top of the groove of one of the mounting plates 11 and is threaded to the mounting plate 11. The lower end of the screw 15 is rotatably connected to the slider 12 on the mounting plate 11. The frame also includes an upper pressure roller 13 and a lower pressure roller 14. The two ends of the upper pressure roller 13 are rotatably connected to the sliders 12 on the two mounting plates 11, respectively. The lower pressure roller 14 is located below the upper pressure roller 13 and is rotatably connected to the two mounting plates 11, respectively.
[0020] Working principle: Two rolls of synthetic fiber paper are laminated together to form a double-layered bag. The two sides of the bag are then folded inwards to a certain depth, creating grooves on both sides. The bolts 9 on each moving lever 4 that pass through the grooves of the connecting plate 8 are loosened to reduce the pressure on the connecting plate 8. The connecting plate 8 is then moved upwards, causing the templates 6 to move away from the rotating roller 7. The bolts 9 are tightened to fix the templates 6 in place. The bag is then passed between the two templates 6, which are then fitted into the grooves on both sides of the bag. The bolts 9 are loosened again, and the templates 6 and the bag are moved downwards, bringing the templates 6 closer to the rotating roller 7. The bag then contacts the rotating roller 7, which presses against the bottom of the bag. After the bag passes through the template 6, the screw 15 on the mounting plate 11 is turned to pull the slider 12 upward. The slider 12 drives the upper pressure roller 13 upward, moving the upper pressure roller 13 away from the lower pressure roller 14, allowing the bag to pass between the upper and lower pressure rollers 14. Then, the bag is connected to the conveying mechanism, and the screw 15 is turned to push the upper pressure roller 13 downward, pressing down on the bag. The conveying mechanism pulls the bag to move, and the chemical fiber paper continues to be laminated into a bag. The moving bag passes through the two templates 6, and under the action of the two templates 6, the two sides of the bag fold inward. At the same time, the bag is subjected to the pressure of the rotating roller 7 and the upper and lower pressure rollers 14 during its movement, preventing the bag from returning to its original shape and keeping the bag in a state of folding inward on both sides, increasing the stability of the bag after folding. Depending on the different folding depths required for the sides of the bag, rotating the two lead screws 5 causes the two moving rods 4 to move away from or closer to each other. The two moving rods 4, through the connecting plate 8, cause the two templates 6 to move away from or closer to each other, thus allowing the templates 6 to be embedded into the sides of the bag at different depths. This eliminates the need to prepare multiple templates 6 of different sizes, reducing costs.
Claims
1. An adjustable template for folding the edge of a filter bag, comprising a frame (1), wherein connecting frames (2) are fixedly connected to both sides of the frame (1), and two horizontal guide rods (3) are fixedly connected between the two connecting frames (2), and two movable rods (4) are also included, wherein the guide rods (3) pass through the two movable rods (4), the guide rods (3) and the movable rods (4) are slidably connected, the two movable rods (4) are parallel to each other, and two lead screws (5) are also included, wherein the two lead screws (5) correspond to the two movable rods (4) respectively, the two lead screws (5) pass horizontally through the two connecting frames (2) and the two movable rods (4), the lead screws (5) are rotatably connected to the connecting frames (2), and the corresponding lead screws (5) are threadedly connected to the movable rods (4), each movable rod (4) is connected to a horizontal template (6) through a connector, and a rotating roller (7) is rotatably connected to the frame (1) below the template (6).
2. The adjustable template for folding the edge of a filter bag according to claim 1, characterized in that, The connector includes a connecting plate (8) and a bolt (9). Each movable bar (4) is slidably connected to two connecting plates (8). The connecting plate (8) has a vertical waist-shaped groove (10). Each connecting plate (8) has a bolt (9) passing through its groove. The tail of the bolt (9) contacts the connecting plate (8). The bolt (9) is threadedly connected to the movable bar (4). The template (6) is fixedly connected to the two connecting plates (8) on its corresponding movable bar (4).
3. An adjustable template for folding the edge of a filter bag according to claim 1, characterized in that, The frame (1) is fixedly connected to two mounting plates (11) on both sides. Each mounting plate (11) is vertically slidably connected to a slider (12). An adjustment mechanism is provided between the slider (12) and the mounting plate (11). The frame also includes an upper pressure roller (13) and a lower pressure roller (14). The upper pressure roller (13) is located above the lower pressure roller (14). The two ends of the upper pressure roller (13) are rotatably connected to the sliders (12) on the two mounting plates (11) respectively. The two ends of the lower pressure roller (14) are rotatably connected to the two mounting plates (11) respectively.
4. An adjustable template for folding the edge of a filter bag according to claim 3, characterized in that, The adjustment mechanism is a screw (15), which is vertically threaded to the side of the mounting plate (11), and the lower end of the screw (15) is rotatably connected to the slider (12) on the mounting plate (11).
5. An adjustable template for folding the edge of a filter bag according to claim 1, characterized in that, A rotating handle (16) is fixedly connected to the end of the lead screw (5).