Heat sealing and cutting mechanism of plastic film bag making machine

Abstract

The heat sealing and cutting mechanism of the plastic film bag making machine comprises a conveying belt, two stand columns are arranged on the two sides of the conveying belt respectively, a top plate is fixedly connected to the tops of the stand columns, an electric telescopic rod is detachably connected to the middle of the side wall of the top of the top plate, and a follow-up column is arranged on the side, opposite to the conveying belt, of the top plate. The output end of the electric telescopic rod penetrates through the top plate to be detachably connected to the middle of the side wall of the top of the follow-up column, a fixing plate is fixedly connected to the position, close to the bottom edge, of the side wall of one side of the follow-up column, and a hydraulic cylinder is detachably connected to the side wall of the side, away from the fixing plate, of the follow-up column. Compared with the prior art, the film bag cutting device has the advantages that the fixing plate and the pressing plate are arranged, the pressing plate is firstly in contact with a film bag during cutting, and pressure is continuously applied to the pressing plate along with continuous descending of the fixing plate, so that the pressing plate is stably pressed on the film bag, and at the moment, the heating plate is also attached to the film bag; and the film bag is heated through the heating plate for heat sealing.

Description

Technical Field

[0001] The utility model relates to the technical field of a plastic bag heat-sealing and cutting mechanism, in particular to a heat-sealing and cutting mechanism of a plastic film bag making machine. Background Art

[0002] Bags made of plastic film are the most common packaging material nowadays. Because of its characteristics, it can be used to store and package many different types of products, and different patterns can be printed on the surface of the packaging to increase the aesthetics as needed. Because it is industrially produced, the film needs to be cut and sealed to form a closed bag structure.

[0003] According to the "heat sealing and cutting mechanism of plastic film bag making machine" with publication number "CN220095731U", it separates the adjusting screws at both ends of the U-shaped seat by rotating the adjusting screw, so that the top seat and the auxiliary seat are disengaged from the limit connection, and the position between the top seat and the auxiliary seat can be rotated by the bearing and the rotating shaft. At this time, by pressing the handle, the top seat can drive the sealing and cutting knife to swing and flip through the rotation of the bearing and the rotating shaft. After flipping, the sealing and cutting knife can clean the colloid residue. This method does not require a large amount of disassembly work and handling operations, saves time and physical strength, and is simple and convenient to operate.

[0004] Current heat sealing and cutting equipment will adhere the film to the heat sealing plate because of the need for heat sealing, which will cause the film to be pulled up along with the heat sealing plate, affecting subsequent transportation and processing procedures. Some heat seals install the heating component in the cutting knife, which requires the cutting knife to be in contact with the film for a period of time before it can be lifted up for the next cutting step, affecting the overall efficiency. For this purpose, a heat sealing and cutting device is established. Utility Model Content

[0005] The technical solution adopted by the utility model to solve the technical problem is: a heat sealing and cutting mechanism of a plastic film bag making machine comprises a conveyor belt, two columns are set on both sides of the conveyor belt, the top of the column is fixedly connected to a top plate, the middle of the top side wall of the top plate is detachably connected to an electric telescopic rod, a follower column is set on the side of the top plate opposite to the conveyor belt, the output end of the electric telescopic rod passes through the top plate and is detachably connected to the middle of the top side wall of the follower column, one side wall of the follower column and a position close to the bottom edge is fixedly connected to a fixed plate, and the side wall of the follower column away from the fixed plate is detachably connected to a hydraulic cylinder.

[0006] As a preferred technical solution of the utility model, the side wall of one end of the follower column away from the top plate is detachably connected to the mounting plate by screws, a heating plate is fixedly connected to the middle of the side wall of the mounting plate away from the follower column, electrode sheets are embedded in the middle of the side walls on both sides opposite to the follower column, the heating plate is electrically connected to the electrode sheets, a power supply component is embedded in the follower column, and the power supply component is connected to an external power supply through wires, a movable groove is opened inside the fixed plate, a spring is fixedly connected to the top side wall in the movable groove, a pressing plate is provided under the fixed plate, one end of the pressing plate is telescopically connected in the movable groove and fixedly connected to the bottom end of the spring, and an anti-slip pad is fixedly connected to one end of the pressing plate away from the fixed plate.

[0007] As a preferred technical solution of the utility model, a cutting knife is fixedly connected to the output end of the hydraulic cylinder, and the hydraulic cylinder is detachably connected to the side back of a follower column through a clamp. A knife groove is provided on the top side wall of the conveyor belt opposite to the cutting knife. A supporting column is fixedly connected to both side edges of the top of the conveyor belt, and an auxiliary roller is rotatably connected between the two support columns. A rubber pad is fixedly connected to the outer wall of the auxiliary roller, and one side of the auxiliary roller is in contact with the film bag.

[0008] The utility model has the following advantages: through the establishment of a fixed plate and a pressing plate, the pressing plate will first contact the film bag during cutting, and as the fixed plate continues to descend, pressure will be continuously applied to the pressing plate, so that the pressing plate can be stably pressed on the film bag. At this time, the heating plate will also be attached to the film belt, and the film bag will be heated and heat-sealed by the heating plate, and the cutting steps will be carried out synchronously. After the processing is completed, the follower column rises, and the pressing plate still presses the film bag. Under the pressure of the pressing plate, the heating plate smoothly leaves the film bag, and then the pressing plate leaves the film bag, which effectively avoids the film being lifted by the heating plate and affecting subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a three-dimensional structural schematic diagram of a preferred embodiment of the utility model;

[0010] Figure 2 It is a schematic diagram of the side plan structure of a preferred embodiment of the utility model;

[0011] Figure 3 It is a schematic diagram of the side plan structure of a follower column of a preferred embodiment of the utility model.

[0012] Explanation of the reference numerals: 1. conveyor belt; 2. upright column; 3. top plate; 4. electric telescopic rod; 5. follower column; 6. mounting plate; 7. heating plate; 8. hydraulic cylinder; 9. cutting knife; 10. fixing plate; 11. pressing plate; 12. auxiliary roller; 13. electrode sheet; 14. knife groove; 15. movable groove; 16. spring. DETAILED DESCRIPTION

[0013] The utility model will be further described below in conjunction with the accompanying drawings.

[0014] Please refer to Figure 1-3 , the utility model plastic film bag making machine heat sealing and cutting mechanism, the conveyor belt 1 is provided with two columns 2 on both sides, the column 2 is fixedly connected with a top plate 3 on the top, the top plate 3 is detachably connected with an electric telescopic rod 4 in the middle of the top side wall, a follower column 5 is provided on the side of the top plate 3 opposite to the conveyor belt 1, the output end of the electric telescopic rod 4 passes through the top plate 3 and is detachably connected to the middle of the top side wall of the follower column 5, a fixed plate 10 is fixedly connected to one side wall of the follower column 5 and close to the bottom edge, and a hydraulic cylinder 8 is detachably connected to the side wall of the follower column 5 away from the fixed plate 10;

[0015] The side wall of the follower column 5 at one end away from the top plate 3 is detachably connected to the mounting plate 6 by screws, a heating plate 7 is fixedly connected to the middle of the side wall of the mounting plate 6 away from the follower column 5, electrode sheets 13 are embedded in the middle of the side walls on both sides opposite to the mounting plate 6 and the follower column 5, the heating plate 7 is electrically connected to the electrode sheet 13, a power supply component is embedded in the follower column 5, and the power supply component is connected to an external power supply through wires, a movable groove 15 is opened inside the fixed plate 10, a spring 16 is fixedly connected to the top side wall of the movable groove 15, a pressing plate 11 is set below the fixed plate 10, one end of the pressing plate 11 is telescopically connected in the movable groove 15 and fixedly connected to the bottom end of the spring 16, and an anti-slip pad is fixedly connected to one end of the pressing plate 11 away from the fixed plate 10.

[0016] A preferred effect of the present scheme is that the fixed plate 10 is fixed on one side wall of the follower column 5, which can realize the function of synchronous lifting and lowering of the fixed plate 10 and the follower column 5, and the pressing plate 11 is longer than the heating plate 7, so when descending, the pressing plate 11 will first contact with the film bag to press it, and a spring 16 is set in the fixed plate 10, which can still drive the pressing plate 11 to continuously press the film bag when rising, thereby ensuring that the heating plate 7 is smoothly detached from the film bag, avoiding the film bag being pulled up and affecting subsequent processing.

[0017] The output end of the hydraulic cylinder 8 is fixedly connected with a cutting knife 9, and the hydraulic cylinder 8 is detachably connected to one side of the follower column 5 through a clamp. A knife groove 14 is provided on the top side wall of the conveyor belt 1 opposite to the cutting knife 9. A support column is fixedly connected to both sides of the top edge of the conveyor belt 1, and an auxiliary roller 12 is rotatably connected between the two support columns. A rubber pad is fixedly connected to the outer wall of the auxiliary roller 12, and one side of the auxiliary roller 12 is in contact with the film bag.

[0018] A preferred effect of the present invention is that a knife groove 14 is provided on the conveyor belt 1 to increase the stroke of the cutting knife 9, thereby increasing the contact time between the heating plate 7 and the film bag to ensure the heat sealing effect. The auxiliary roller 12 is provided to assist in the transportation of the film bag while pressing it, ensuring smooth cutting by the cutting knife 9 and avoiding the film bag being moved during cutting to affect the cutting effect.

[0019] Specifically, when the utility model is used, the film bag is sent to the bottom of the follower column 5 by the conveying mechanism, and then the electric telescopic rod 4 is started to drive the follower column 5 to descend. As the follower column 5 descends, the fixed plate 10 and the pressing plate 11 are driven to descend synchronously, and the pressing plate 11 is driven to press the film bag. Because a spring 16 is set in the movable groove 15, the fixed plate 10 will squeeze the spring 16 when it descends, and the elasticity of the spring 16 will apply pressure to the pressing plate 11 again, thereby ensuring that the film bag is stably pressed. At this time, the heating plate 7 is also lowered to be close to the film bag. The film bag is closed, so the heating plate 7 is preheated, so that the film bag can be heat-sealed more efficiently. When the heating plate 7 contacts the film bag, the hydraulic cylinder 8 is started to drive the cutting knife 9 to descend to cut the film bag. After the cutting is completed, the heat sealing is also completed, and the follower column 5 is pulled up by the electric telescopic rod 4. As the heating plate 7 rises, it leaves the film bag first. When the spring 16 drives the pressing plate 11 to press down, the film bag continues to be firmly pressed, so as to separate the film bag from the heating plate 7, so as to prevent the heating plate 7 from pulling up the film bag and affecting subsequent production.

[0020] The above are only preferred implementations of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

[0021] Other parts of the present invention not described in detail belong to the prior art and will not be described in detail here.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A heat sealing and cutting mechanism for a plastic film bag making machine, comprising a conveyor belt (1), characterized in that: Two columns (2) are provided on both sides of the conveyor belt (1); a top plate (3) is fixedly connected to the top of the column (2); an electric telescopic rod (4) is detachably connected to the middle of the top side wall of the top plate (3); a follower column (5) is provided on the side of the top plate (3) opposite to the conveyor belt (1); an output end of the electric telescopic rod (4) passes through the top plate (3) and is detachably connected to the middle of the top side wall of the follower column (5); a fixed plate (10) is fixedly connected to one side wall of the follower column (5) near the bottom edge; and a hydraulic cylinder (8) is detachably connected to the side wall of the follower column (5) away from the fixed plate (10).

2. The heat sealing and cutting mechanism of the plastic film bag making machine according to claim 1, characterized in that: The side wall of one end of the follower column (5) away from the top plate (3) is detachably connected to a mounting plate (6) by means of screws; a heating plate (7) is fixedly connected to the middle of the side wall of the mounting plate (6) away from the follower column (5); electrode sheets (13) are embedded in the middle of the side walls on both sides opposite to the follower column (5); the heating plate (7) is electrically connected to the electrode sheet (13); a power supply component is embedded in the follower column (5), and the power supply component is connected to an external power source via electric wires.

3. The heat sealing and cutting mechanism of the plastic film bag making machine according to claim 1, characterized in that: The output end of the hydraulic cylinder (8) is fixedly connected to a cutting knife (9), and the hydraulic cylinder (8) is detachably connected to a side back of a follower column (5) via a clamp. A knife groove (14) is provided on the top side wall of the conveyor belt (1) opposite to the cutting knife (9).

4. The heat sealing and cutting mechanism of the plastic film bag making machine according to claim 1, characterized in that: A movable groove (15) is provided inside the fixed plate (10), and a spring (16) is fixedly connected to the top side wall of the movable groove (15). A pressing plate (11) is provided below the fixed plate (10), and one end of the pressing plate (11) is telescopically connected to the movable groove (15) and fixedly connected to the bottom end of the spring (16). An end of the pressing plate (11) away from the fixed plate (10) is fixedly connected to an anti-slip pad.

5. The heat sealing and cutting mechanism of the plastic film bag making machine according to claim 1, characterized in that: A support column is fixedly connected to both side edges of the top of the conveyor belt (1), an auxiliary roller (12) is rotatably connected between the two support columns, a rubber pad is fixedly connected to the outer wall of the auxiliary roller (12), and one side of the auxiliary roller (12) is in contact with the film bag.

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