A plastic bag processing edge bonding machine
By incorporating an adjustable heating structure and pressing components into the edge-sealing machine, the problems of wrinkles and incompatibility of heating structures during plastic bag edge-sealing are solved, achieving high-quality edge-sealing and energy-saving effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU JITENG PACKAGING CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-14
AI Technical Summary
Existing edge-sealing machines for plastic bag processing are prone to producing wrinkles during edge-sealing, resulting in poor edge-sealing quality. At the same time, the heating structure has a fixed width, which cannot adapt to plastic bags of different sizes, leading to high energy consumption or difficulty in edge-sealing.
An edge-sealing machine was designed, comprising an edge-sealing component and a pressing component with adjustable heating structure width. The heating block is inserted into the mounting groove and heated by electricity. Combined with the pressing roller and limit spring, the plastic bag is flattened to accommodate plastic bags of different widths.
It effectively solves the problem of wrinkles when gluing plastic bags, improves the gluing quality, and can adjust the heating structure according to the width of the plastic bag, reducing energy consumption and improving the practicality of the gluing machine.
Smart Images

Figure CN224490290U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of edge-gluing machine technology, specifically an edge-gluing machine for processing plastic bags. Background Technology
[0002] During the production and processing of plastic bags, the left and right edges and bottom edges of two sets of plastic sheets are heat-sealed to form a plastic bag. However, when sealing the edges of existing plastic bags, the bags are prone to wrinkling, resulting in poor sealing quality. In addition, plastic bags come in a variety of diameters, while the width of the heating structure of current sealing machines is fixed. This leads to high energy consumption when dealing with narrow plastic bags, and difficulty in sealing wider plastic bags, resulting in poor practicality.
[0003] Therefore, a sealing machine for plastic bag processing is needed to improve the above problems. Utility Model Content
[0004] To address the problem that existing edge-sealing machines for plastic bag processing often result in poor edge-sealing quality due to wrinkles easily forming on the plastic bags during the edge-sealing process, this invention provides an edge-sealing machine for plastic bag processing to solve the aforementioned problem.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A plastic bag edge-sealing machine includes a mounting bracket, a processing seat mounted on the top outer wall of the mounting bracket, an mounting base mounted on the base surface of the processing seat, a conveyor mounted on the outer wall of the mounting base, a driver embedded in one side of the conveyor and located on the outer wall of the mounting base, wherein the driver drives the conveyor, an edge-sealing assembly mounted on one side of the conveyor and located on the outer wall of the mounting base, and a pressing assembly mounted on the outer wall of the edge-sealing assembly;
[0007] The edge-adhesive assembly includes a fixed bracket mounted on the outer wall of the mounting base. An electrically controlled cylinder is mounted on the top outer wall of the fixed bracket. A pressure seat is mounted on the moving end of the electrically controlled cylinder. A mounting groove is formed on the bottom outer wall of the pressure seat. A positive electrode and a negative electrode are respectively mounted on the opposing inner walls of the mounting groove. A heating block is inserted and removed from the inner wall of the mounting groove. A contact electrode is mounted on the opposing outer wall of the heating block. The contact electrode is located on one side of the positive electrode and the negative electrode. Multiple sets of heating blocks are provided and are respectively located on the inner wall of the mounting groove. A receiving base is mounted directly below the pressure seat and on the outer wall of the mounting base.
[0008] As a preferred embodiment of this utility model, the pressing assembly includes a mounting plate, which is mounted on the side wall of the lower pressing seat. A fixing groove is provided on the outer wall of the mounting plate, and a first mounting bolt and a second mounting bolt are sequentially installed on the inner wall of the fixing groove. A mounting housing is installed on the bottom outer wall of the first mounting bolt, and a rotating shaft is installed on the opposite inner wall of the mounting housing.
[0009] In a preferred embodiment of this utility model, the rotating shaft is provided in two sets and is located on the inner walls of the mounting housing respectively. A pressing plate is rotatably connected to the outer wall of the rotating shaft, and a fixing rod is installed on the inner wall of the pressing plate. A pressing roller is rotatably connected to one side of the fixing rod and on the inner wall opposite to the pressing plate.
[0010] As a preferred embodiment of this utility model, a limiting spring is installed on the outer wall of the fixing rod, wherein one end of the limiting spring is connected to the inner wall of the mounting housing, and two sets of the limiting spring are provided and located on the inner wall of the mounting housing respectively. A spring telescopic rod is installed on the bottom outer wall of the second mounting bolt, wherein a pressing block is installed on the bottom outer wall of the spring telescopic rod.
[0011] As a preferred embodiment of this utility model, the mounting bracket is equipped with casters on its bottom outer wall, and multiple sets of casters are provided, each located at a bottom corner of the mounting bracket.
[0012] In a preferred embodiment of this utility model, the bottom outer wall of the pressing block and the mounting housing is higher than the bottom outer wall of the heating block. A material guide housing is installed on the side wall of the processing seat, and a controller is installed on the side wall of the processing seat. The controller is connected to a driver, an electric cylinder, a positive electrode, and a negative electrode via wires, and the connection method is electrical connection.
[0013] Compared with existing technologies, this invention enables the adjustment of the heating structure width in a plastic bag edge-sealing machine by setting an edge-sealing component to suit plastic bags of different widths. By sequentially inserting heating blocks into the inner wall of the mounting groove, an appropriate number of heating blocks can be selected according to the width of the plastic bag to be edged. When the heating block is inserted into the mounting groove, the contact electrodes on both sides of the heating block adhere to the outer walls of the positive and negative electrodes, thereby energizing the contact electrodes and heating the heating block. Subsequently, one end of the electrically controlled cylinder drives the lower pressure seat to move downward, so that the lower pressure seat drives the heating block to heat and edge-seal the plastic bag. This solves the problem that the current edge-sealing machine has a fixed heating structure width, which results in high energy consumption when encountering narrow plastic bags and difficulty in edge-sealing and sealing when encountering wide plastic bags, leading to poor practicality.
[0014] This invention achieves surface flattening of plastic bags by incorporating a pressing component in a plastic bag edge-sealing machine. The plastic bag is placed on the outer wall of a conveyor, and the controller is turned on, causing the electric cylinder to operate. One end of the electric cylinder moves the lower pressure seat downwards, which in turn moves the mounting plate downwards. This, in turn, moves the first and second mounting bolts downwards. When the pressing roller adheres to the surface of the plastic bag, it is forced outwards, causing the pressing roller to move the pressing plate. This causes the pressing plate to rotate on the outer wall of the shaft. Simultaneously, the pressing plate compresses the limiting spring via a fixing rod, causing the pressing roller to move to both sides to flatten the plastic bag. This solves the problem of poor edge-sealing quality in existing plastic bag edge-sealing processes, where wrinkles easily form on the plastic bag. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a side view of the structure of this utility model;
[0017] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A;
[0018] Figure 4 This is a schematic diagram of the mounting bracket structure of this utility model;
[0019] Figure 5 This is a schematic diagram of the pressing component structure of this utility model.
[0020] In the diagram: 1. Mounting bracket; 2. Processing base; 3. Mounting base; 4. Conveyor; 5. Driver; 6. Edge bonding assembly; 601. Fixed bracket; 602. Electric cylinder; 603. Lower pressure seat; 604. Mounting groove; 605. Positive electrode; 606. Negative electrode; 607. Heating block; 608. Contact electrode; 609. Receiving base; 7. Pressing assembly; 701. Mounting plate; 702. Fixed groove; 703. First mounting bolt; 704. Second mounting bolt; 705. Mounting housing; 706. Rotating shaft; 707. Pressing plate; 708. Fixed rod; 709. Pressing roller; 710. Limiting spring; 711. Spring telescopic rod; 712. Lower pressure block; 8. Caster wheel; 9. Material guide housing; 10. Controller. Detailed Implementation
[0021] 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.
[0022] Example: Please refer to Figure 1-5 The illustrated plastic bag edge-sealing machine includes a mounting bracket 1, a processing seat 2 mounted on the top outer wall of the mounting bracket 1, a mounting seat 3 mounted on the base surface of the processing seat 2, a conveyor 4 mounted on the outer wall of the mounting seat 3, a driver 5 embedded in one side of the conveyor 4 and located on the outer wall of the mounting seat 3, wherein the driver 5 drives the conveyor 4, an edge-sealing assembly 6 mounted on one side of the conveyor 4 and located on the outer wall of the mounting seat 3, and a pressing assembly 7 mounted on the outer wall of the edge-sealing assembly 6.
[0023] In this embodiment, specific references Figure 1 , Figure 2 , Figure 3 and Figure 4 The edge-adhesive assembly 6 includes a fixed bracket 601, which is mounted on the outer wall of the mounting base 3. An electric control cylinder 602 is mounted on the top outer wall of the fixed bracket 601. A pressing seat 603 is mounted on the moving end of the electric control cylinder 602. An installation groove 604 is provided on the bottom outer wall of the pressing seat 603. A positive electrode 605 and a negative electrode 606 are respectively mounted on the opposing inner walls of the installation groove 604. A heating block 607 is inserted and removed from the inner wall of the installation groove 604. A contact electrode 608 is mounted on the opposing outer wall of the heating block 607. The contact electrode 608 is located on one side of the positive electrode 605 and the negative electrode 606. Multiple sets of heating blocks 607 are provided and are respectively located on the inner wall of the installation groove 604. A receiving base 609 is mounted directly below the pressing seat 603 and on the outer wall of the mounting base 3.
[0024] In this embodiment, specific references Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The pressing assembly 7 includes a mounting plate 701, which is mounted on the side wall of the lower pressing seat 603. A fixing groove 702 is formed on the outer wall of the mounting plate 701. A first mounting bolt 703 and a second mounting bolt 704 are sequentially mounted on the inner wall of the fixing groove 702. A mounting housing 705 is mounted on the bottom outer wall of the first mounting bolt 703. Two rotating shafts 706 are mounted on the opposing inner walls of the mounting housings 705. Two sets of rotating shafts 706 are provided and located on the opposing inner walls of the mounting housings 705. A pressing plate 707 is rotatably connected to the outer wall of the rotating shafts 706. A fixing rod 708 is installed on the inner wall of the pressing plate 707. A pressing roller 709 is rotatably connected to one side of the fixing rod 708 and located on the inner wall opposite to the pressing plate 707. A limit spring 710 is installed on the outer wall of the fixing rod 708. One end of the limit spring 710 is connected to the inner wall of the mounting housing 705. Two sets of limit springs 710 are provided and are located on the inner wall of the mounting housing 705 respectively. A spring telescopic rod 711 is installed on the bottom outer wall of the second mounting bolt 704. A lower pressure block 712 is installed on the bottom outer wall of the spring telescopic rod 711.
[0025] Based on the above structural features and connection relationship, the pressing plate 707 drives the fixing rod 708 to compress the limiting spring 710, so that the pressing roller 709 moves to both sides to flatten the plastic bag. When the mounting plate 701 moves up, the compressed limiting spring 710 is reset, and then the limiting spring 710 drives the pressing plate 707 to reset through the fixing rod 708.
[0026] Among them, the bottom outer wall of the mounting bracket 1 is equipped with casters 8. Multiple sets of casters 8 are provided and are located at the bottom corners of the mounting bracket 1. The bottom outer walls of the pressure block 712 and the mounting housing 705 are higher than the bottom outer wall of the heating block 607. The side wall of the processing seat 2 is equipped with a guide housing 9. The side wall of the processing seat 2 is equipped with a controller 10. The controller 10 is connected to the driver 5, the electric cylinder 602, the positive electrode 605 and the negative electrode 606 through wires. Under the action of the electric connection, the device is powered on, and the controller 10 controls the driver 5, the electric cylinder 602, the positive electrode 605 and the negative electrode 606 to operate.
[0027] When the edge-sealing machine for plastic bag processing in this solution is working, the controller 10 is connected to the driver 5, the electric cylinder 602, the positive electrode 605 and the negative electrode 606 through wires, and the connection is electrical. This makes the device powered on, and then the controller 10 controls the driver 5, the electric cylinder 602, the positive electrode 605 and the negative electrode 606 to operate.
[0028] By placing the plastic bag on the outer wall of the conveyor 4 and turning on the controller 10, the controller 10 controls the electric cylinder 602 to operate. One end of the electric cylinder 602 drives the lower pressure seat 603 to move downward, which in turn drives the mounting plate 701 to move downward. This causes the mounting plate 701 to drive the first mounting bolt 703 and the second mounting bolt 704 to move downward. When the pressing roller 709 is pressed against the surface of the plastic bag, the pressing roller 709 is forced to roll outward. The pressing roller 709 drives the pressing plate 707 to move, which in turn causes the pressing plate 707 to rotate on the outer wall of the rotating shaft 706. At the same time, the pressing plate 707 drives the fixing rod 708 to compress the limit spring 710, so that the pressing roller 709 moves to both sides to flatten the plastic bag. This solves the problem that the existing plastic bags are prone to wrinkles when being glued, resulting in poor edge-sealing quality.
[0029] By sequentially inserting heating blocks 607 into the inner wall of the mounting groove 604, an appropriate number of heating blocks 607 can be selected according to the width of the plastic bag to be edged. When the heating blocks 607 are inserted into the mounting groove 604, the contact electrodes 608 on both sides of the heating blocks 607 will adhere to the outer walls of the positive electrode 605 and the negative electrode 606, thereby energizing the contact electrodes 608 and energizing the heating blocks 607 for heating. Subsequently, one end of the electric control cylinder 602 drives the lower pressure seat 603 to move downward, so that the lower pressure seat 603 drives the heating blocks 607 to heat and edge the plastic bag. This solves the problem that the current edge-sealing machine has a fixed width of heating structure, which results in high energy consumption when encountering narrow plastic bags and difficulty in edge sealing when encountering wide plastic bags, leading to poor practicality.
[0030] The driver 5, the electrically controlled cylinder 602, the positive electrode 605 and the negative electrode 606, and the controller 10 used in this utility model are all existing known electrical devices, and all can be purchased and used directly on the market. Their structure, circuit, and control principle are all existing known technologies. Therefore, the structure, circuit, and control principle of the driver 5, the electrically controlled cylinder 602, the positive electrode 605 and the negative electrode 606, and the controller 10 will not be described in detail here.
[0031] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.
[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A sealing machine for processing plastic bags, comprising a mounting bracket (1), characterized in that: A processing seat (2) is installed on the top outer wall of the mounting bracket (1), and a mounting seat (3) is installed on the base surface of the processing seat (2). A conveyor (4) is installed on the outer wall of the mounting seat (3). A driver (5) is embedded on one side of the conveyor (4) and on the outer wall of the mounting seat (3), wherein the driver (5) drives the conveyor (4). An edge-adhesive assembly (6) is installed on one side of the conveyor (4) and on the outer wall of the mounting seat (3). A pressing assembly (7) is installed on the outer wall of the edge-adhesive assembly (6). The edge-adhesive assembly (6) includes a fixing bracket (601), which is mounted on the outer wall of the mounting base (3). An electric cylinder (602) is mounted on the top outer wall of the fixing bracket (601). A pressing seat (603) is mounted on the moving end of the electric cylinder (602). A mounting groove (604) is provided on the bottom outer wall of the pressing seat (603). A positive electrode (605) and a negative electrode (606) are respectively mounted on the opposing inner walls of the mounting groove (604). 6) A heating block (607) is inserted and installed on the inner wall of the mounting groove (604). A contact electrode (608) is installed on the outer wall opposite to the heating block (607). The contact electrode (608) is located on one side of the positive electrode (605) and the negative electrode (606). Multiple sets of heating blocks (607) are provided and are respectively located on the inner wall of the mounting groove (604). A receiving base (609) is installed directly below the pressing seat (603) and on the outer wall of the mounting seat (3).
2. The edge-sealing machine for processing plastic bags according to claim 1, characterized in that: The pressing assembly (7) includes a mounting plate (701), which is mounted on the side wall of the lower pressure seat (603). A fixing groove (702) is provided on the outer wall of the mounting plate (701). A first mounting bolt (703) and a second mounting bolt (704) are installed sequentially on the inner wall of the fixing groove (702). A mounting housing (705) is installed on the bottom outer wall of the first mounting bolt (703). A rotating shaft (706) is installed on the opposite inner wall of the mounting housing (705).
3. The edge-sealing machine for processing plastic bags according to claim 2, characterized in that: The rotating shaft (706) is provided in two sets and is located on the inner walls of the mounting housing (705) respectively. A pressing plate (707) is rotatably connected to the outer wall of the rotating shaft (706). A fixing rod (708) is installed on the inner wall of the pressing plate (707). A pressing roller (709) is rotatably connected to one side of the fixing rod (708) and on the inner wall opposite to the pressing plate (707).
4. The edge-sealing machine for processing plastic bags according to claim 3, characterized in that: A limiting spring (710) is installed on the outer wall of the fixing rod (708), wherein one end of the limiting spring (710) is connected to the inner wall of the mounting housing (705), and two sets of the limiting spring (710) are provided and are respectively located on the inner wall of the mounting housing (705). A spring telescopic rod (711) is installed on the bottom outer wall of the second mounting bolt (704), wherein a lower pressure block (712) is installed on the bottom outer wall of the spring telescopic rod (711).
5. The edge-sealing machine for processing plastic bags according to claim 4, characterized in that: The bottom outer wall of the mounting bracket (1) is equipped with casters (8), and there are multiple sets of casters (8) located at the bottom corners of the mounting bracket (1).
6. The edge-sealing machine for processing plastic bags according to claim 5, characterized in that: The bottom outer wall of the pressing block (712) and the mounting housing (705) is higher than the bottom outer wall of the heating block (607). A guide housing (9) is installed on the side wall of the processing seat (2). A controller (10) is installed on the side wall of the processing seat (2). The controller (10) is connected to the driver (5), the electric cylinder (602), the positive electrode (605) and the negative electrode (606) respectively by wires and the connection method is electrical connection.