A forming device for a self-sealing paper bag with a flat rope handle

Abstract

This utility model relates to the field of paper bag packaging forming technology, and discloses a forming device for a self-sealing paper bag with a flat rope handle. The device includes a support frame, a conveyor belt at the top of the support frame, a forming frame fixedly connected to the top of the conveyor belt, and slide rails fixedly connected to both sides of the support frame. A guide assembly is provided at the top of each slide rail. The guide assembly includes a sliding plate and a push plate. The sliding plate is slidably connected to the top of the slide rail, and one side of the push plate is fixedly connected to the side wall of the sliding plate. An electric telescopic rod is installed inside the conveyor belt, and the side wall of the sliding plate is fixedly connected to the output end of the electric telescopic rod. In this utility model, the electric telescopic rod drives the sliding plate to slide on the slide rail, and the sliding plate drives the push plate to move laterally, thereby improving the forming accuracy of the paper bag and solving problems such as heat-pressing misalignment and bag deformation caused by paper bag offset. This improves the stability of equipment processing and the pass rate of finished paper bags.

Description

Technical Field

[0001] This utility model relates to the field of paper bag packaging forming technology, and in particular to a forming device for a self-sealing paper bag with a flat rope handle. Background Technology

[0002] A forming device for self-sealing paper bags with flat rope handles is an important piece of equipment in the packaging industry, widely used in the production of paper bags in the food, daily chemical, and pharmaceutical fields. With the increasing awareness of environmental protection and the growing demand from consumers for convenient packaging, the market demand for self-sealing paper bags continues to grow due to their reusability and good sealing properties. These paper bags typically require multiple processes such as cutting, molding, and installation of flat rope handles. Among these, the hot-pressing process directly determines the sealing performance and appearance quality of the paper bag. Although traditional forming devices can complete basic processing, they still have shortcomings in terms of production efficiency and forming accuracy, making it difficult to meet the needs of high-precision and diversified production. Therefore, developing a device that can improve forming accuracy and process adaptability has become a key direction for technological improvement in the industry.

[0003] In the prior art, the forming device for self-sealing paper bags with flat rope handles usually adopts a structure of conveyor belt and hot press roller to achieve continuous production. The paper bag is conveyed to the hot press station by the conveyor belt, and pressure and heat are applied by the hot press roller in a fixed position to complete the hot press forming of self-sealing.

[0004] The main problem with existing technologies is that paper bags are prone to positional shifts during transport, leading to misalignment or bag deformation during thermoforming. Due to vibrations of the conveyor belt or uneven stress on the paper bag itself, the paper bag may deviate from the preset center position. Traditional guide plates can only limit the lateral movement range of the paper bag and cannot dynamically adjust its centering state. When the paper bag enters the thermoforming station, the positional deviation will directly lead to asymmetrical thermoforming patterns, poor sealing, or misaligned handles, seriously affecting the finished product qualification rate. To address this issue, a forming device for self-sealing paper bags with flat rope handles is proposed. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a forming device for a self-sealing paper bag with a flat rope handle, which aims to improve the problems of heat-pressing misalignment and bag deformation caused by paper bag displacement in the prior art.

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

[0007] A forming device for a self-sealing paper bag with a flat rope handle includes a support frame, a conveyor belt on the top of the support frame, a forming frame fixedly connected to the top of the conveyor belt, slide rails fixedly connected to both sides of the support frame, and a guide component on the top of the slide rails.

[0008] The guiding assembly includes a sliding plate and a push plate. The sliding plate is slidably connected to the top of the slide rail. One side of the push plate is fixedly connected to the side wall of the sliding plate. An electric telescopic rod is provided inside the conveyor belt. The side wall of the sliding plate is fixedly connected to the output end of the electric telescopic rod. A transmission assembly is provided at the bottom of the sliding plate. A hydraulic cylinder is fixedly connected to the top of the forming frame. A pressing block is fixedly connected to the output end of the hydraulic cylinder. Sliding blocks are fixedly connected to both sides of the pressing block. The sliding blocks are slidably connected inside the forming frame. A positioning assembly is provided inside the pressing block.

[0009] As a further description of the above technical solution:

[0010] The transmission assembly includes a connecting rod and a rotating rod. One end of the connecting rod is rotatably connected to the bottom of the sliding plate, one end of the rotating rod is rotatably connected to the other end of the connecting rod, and the top of the rotating rod is rotatably connected to the bottom of the support frame.

[0011] As a further description of the above technical solution:

[0012] The positioning component includes a locking pin, which is slidably connected inside the pressing block.

[0013] As a further description of the above technical solution:

[0014] The lower pressure block has a trapezoidal column slidably connected inside, and a hot pressure roller is fixedly connected to the bottom of the trapezoidal column. The clamping column engages with the trapezoidal column.

[0015] As a further description of the above technical solution:

[0016] A fixed frame is fixedly connected to the outer wall of the pressing block, and a sliding column is slidably connected inside the fixed frame.

[0017] As a further description of the above technical solution:

[0018] One end of the sliding column is rotatably connected to a handle, and the other end of the sliding column is fixedly connected to the side wall of the locking column.

[0019] As a further description of the above technical solution:

[0020] A spring is fitted on the outer wall of the sliding column. One end of the spring is fixedly connected to the side wall of the locking column, and the other end of the spring is fixedly connected to the inner wall of the fixing frame.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, an electric telescopic rod drives a sliding plate to slide on a slide rail. The sliding plate drives a pusher plate to move laterally. Then, the pusher plate pushes the paper bag to be formed on the conveyor belt towards the center, so that the paper bag always remains in a centered state during the conveying process. During the molding process, the paper bag is stable and does not shift, thereby improving the forming accuracy of the paper bag. This solves the problems of hot pressing misalignment and bag deformation caused by paper bag shift, and improves the stability of equipment processing and the qualification rate of finished paper bags.

[0023] 2. In this utility model, the sliding column is driven to slide within the fixed frame by rotating the handle. The sliding column drives the locking column to move, causing the locking column to separate or engage with the trapezoidal column. Subsequently, by replacing the hot press rollers of different specifications and re-fixing them using the locking column, the hot press rollers can be quickly switched according to production needs. In paper bag production, it can quickly adapt to different styles of self-sealing hot pressing processes, thereby achieving the effect of flexibly adjusting the production process. This solves the problem of cumbersome replacement of hot press rollers in traditional equipment and improves the versatility and efficiency of equipment production. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a forming device for a self-sealing paper bag with a flat rope handle, as proposed in this utility model.

[0025] Figure 2 This is a schematic diagram of the lower pressure block structure of a forming device for a flat rope handle self-sealing paper bag proposed in this utility model.

[0026] Figure 3 This is a schematic diagram of the rotating rod structure of a forming device for a flat rope handle self-sealing paper bag proposed in this utility model.

[0027] Figure 4 This is a schematic diagram of the sliding block structure of a forming device for a flat rope handle self-sealing paper bag proposed in this utility model.

[0028] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0029] Legend:

[0030] 1. Support frame; 2. Conveyor belt; 3. Forming frame; 4. Slide rail; 5. Sliding plate; 6. Hydraulic cylinder; 7. Lower pressure block; 8. Electric telescopic rod; 9. Push plate; 10. Rotating rod; 11. Connecting rod; 12. Sliding block; 13. Trapezoidal column; 14. Hot press roller; 15. Fixed frame; 16. Rotating handle; 17. Sliding column; 18. Locking column; 19. Spring. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0032] Reference Figures 1-5 The present invention provides an embodiment of a forming device for a self-sealing paper bag with a flat rope handle, comprising a support frame 1, a conveyor belt 2 at the top of the support frame 1 for conveying the paper bag to be processed, a forming frame 3 fixedly connected to the top of the conveyor belt 2 for providing a working space for molding, and slide rails 4 fixedly connected to both sides of the support frame 1 for guiding the lateral movement of the sliding plate 5, and a guide component at the top of the slide rail 4 for adjusting the center position of the paper bag.

[0033] The guiding assembly includes a sliding plate 5 and a pusher plate 9. The sliding plate 5 is slidably connected to the top of the slide rail 4 to achieve lateral reciprocating motion. One side of the pusher plate 9 is fixedly connected to the side wall of the sliding plate 5 to push the paper bag to center it. An electric telescopic rod 8 is installed inside the conveyor belt 2 to drive the sliding plate 5 to move. The side wall of the sliding plate 5 is fixedly connected to the output end of the electric telescopic rod 8 to transmit driving force. A transmission assembly is installed at the bottom of the sliding plate 5 to assist the smooth operation of the sliding plate 5. A hydraulic cylinder 6 is fixedly connected to the top of the forming frame 3 to provide downward pressure. A lower pressure block 7 is fixedly connected to the output end of the hydraulic cylinder 6 to perform the molding operation. Sliding blocks 12 are fixedly connected to both sides of the lower pressure block 7 to enhance the stability of the lower pressure block 7. The sliding blocks 12 are slidably connected inside the forming frame 3 to ensure the vertical movement of the lower pressure block 7. A positioning assembly is installed inside the lower pressure block 7 to fix the hot pressure roller 14 and achieve quick replacement.

[0034] Reference Figures 1-5The transmission assembly includes a connecting rod 11 and a rotating rod 10. One end of the connecting rod 11 is rotatably connected to the bottom of the sliding plate 5 to convert the lateral movement of the sliding plate 5 into rotational movement. One end of the rotating rod 10 is rotatably connected to the other end of the connecting rod 11 to transmit power and maintain motion balance. The top of the rotating rod 10 is rotatably connected to the bottom of the support frame 1 to provide a stable rotation fulcrum. The positioning assembly includes a locking post 18. The locking post 18 is slidably connected inside the lower pressure block 7 to lock or release the trapezoidal post 13. The trapezoidal post 13 is slidably connected inside the lower pressure block 7 for installing hot press rollers 14 of different specifications. The bottom of the trapezoidal post 13 is fixedly connected to the hot press roller 14 for hot pressing the paper bag. The locking post 18 and the trapezoidal post 13 are connected to the trapezoidal post 14. The engagement of column 13 is used to ensure the stability of the hot press roller 14 during operation. A fixed frame 15 is fixedly connected to the outer wall of the lower pressure block 7 to limit the movement range of the sliding column 17. The sliding column 17 is slidably connected inside the fixed frame 15 to drive the clamping column 18 to move. One end of the sliding column 17 is rotatably connected to a handle 16 for manually controlling the displacement of the clamping column 18. The other end of the sliding column 17 is fixedly connected to the side wall of the clamping column 18 for directly driving the clamping column 18. A spring 19 is sleeved on the outer wall of the sliding column 17 to provide a reset elastic force. One end of the spring 19 is fixedly connected to the side wall of the clamping column 18 to transmit the elastic force. The other end of the spring 19 is fixedly connected to the inner wall of the fixed frame 15 to fix the installation position of the spring 19.

[0035] Working principle: When the paper bag is conveyed on the conveyor belt 2, the electric telescopic rod 8 located inside the conveyor belt 2 starts to work. The output end of the electric telescopic rod 8 drives the sliding plate 5 to slide on the top of the slide rail 4. The sliding plate 5 moves laterally along the slide rail 4, and the push plate 9, which is fixedly connected to the side wall of the sliding plate 5, moves synchronously. The push plate 9 pushes the paper bag to be formed on the conveyor belt 2 towards the center, so that the paper bag always remains in the center during the conveying process until the paper bag is conveyed to the top of the forming frame 3. If it is necessary to replace the hot press roller 14 of different specifications, the operator turns the handle 16. The handle 16 drives the sliding column 17, which is rotatably connected to one end, to slide inside the fixed frame 15. The fixed frame 15 is fixedly connected to the outer wall of the lower pressure block 7. The locking column 18, which is fixedly connected to the other end of the sliding column 17, moves accordingly, so that the locking column 18 separates from the trapezoidal column 13. At this time, the old hot press roller 14 can be removed and a new hot press roller 14 can be replaced. Then, the handle 16 is reversed to make the locking column 18 re-engage with the trapezoidal column 13, thus completing the fixing of the hot press roller 14.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A forming device for a self-sealing paper bag with a flat rope handle, comprising a support frame (1), characterized in that: The top of the support frame (1) is provided with a conveyor belt (2), the top of the conveyor belt (2) is fixedly connected with a forming frame (3), and both sides of the support frame (1) are fixedly connected with slide rails (4), and the top of the slide rails (4) is provided with a guide component; The guiding assembly includes a sliding plate (5) and a push plate (9). The sliding plate (5) is slidably connected to the top of the slide rail (4). One side of the push plate (9) is fixedly connected to the side wall of the sliding plate (5). An electric telescopic rod (8) is provided inside the conveyor belt (2). The side wall of the sliding plate (5) is fixedly connected to the output end of the electric telescopic rod (8). A transmission assembly is provided at the bottom of the sliding plate (5). A hydraulic cylinder (6) is fixedly connected to the top of the forming frame (3). A lower pressing block (7) is fixedly connected to the output end of the hydraulic cylinder (6). Sliding blocks (12) are fixedly connected to both sides of the lower pressing block (7). The sliding blocks (12) are slidably connected inside the forming frame (3). A positioning assembly is provided inside the lower pressing block (7).

2. The forming device of flat rope handle self-sealing paper bag according to claim 1, characterized in that: The transmission assembly includes a connecting rod (11) and a rotating rod (10). One end of the connecting rod (11) is rotatably connected to the bottom of the sliding plate (5), and one end of the rotating rod (10) is rotatably connected to the other end of the connecting rod (11). The top of the rotating rod (10) is rotatably connected to the bottom of the support frame (1).

3. The forming device of flat rope handle self-sealing paper bag according to claim 1, characterized in that: The positioning component includes a locking pin (18), which is slidably connected inside the pressing block (7).

4. The apparatus according to claim 3, wherein: The lower pressure block (7) has a trapezoidal column (13) slidably connected inside, and a hot pressure roller (14) is fixedly connected to the bottom of the trapezoidal column (13). The locking column (18) engages with the trapezoidal column (13).

5. A forming device for flat rope handle self-sealing paper bags according to claim 4, characterized in that: The outer wall of the pressing block (7) is fixedly connected to a fixed frame (15), and a sliding column (17) is slidably connected inside the fixed frame (15).

6. A forming device for flat rope handle self-sealing paper bags according to claim 5, characterized in that: One end of the sliding column (17) is rotatably connected to a handle (16), and the other end of the sliding column (17) is fixedly connected to the side wall of the locking column (18).

7. A forming device for flat rope handle self-sealing paper bags according to claim 6, characterized in that: A spring (19) is fitted on the outer wall of the sliding column (17). One end of the spring (19) is fixedly connected to the side wall of the locking column (18), and the other end of the spring (19) is fixedly connected to the inner wall of the fixing frame (15).

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