Cutting and sealing equipment

Abstract

The utility model relates to cutting and sealing equipment which comprises a working table, a conveying roller is arranged in the working table, a sealing machine, a cutting knife and two air cylinders are arranged above the working table, and the output ends of the air cylinders are sequentially and elastically connected with two pressing plates in the conveying direction of the conveying roller. The sealing machine is fixedly connected with the output end of one air cylinder and located between the two pressing plates, the cutting knife is fixedly connected with the output end of the other air cylinder and located between the two pressing plates, the sealing machine and the cutting knife are sequentially arranged in the conveying direction of the conveying rollers, and arc pressing blocks are arranged at the bottoms of the pressing plates. The top of the workbench is provided with an arc groove matched with the arc pressing block, and the distance between the sealing machine and the top of the workbench and the distance between the cutting knife and the top of the workbench are smaller than the distance between the arc pressing block and the bottom in the arc groove. According to the plastic bag sealing and cutting device, the flatness of a sealing opening and a cutting opening is guaranteed, the problem that the sealing opening or the cutting opening is not normal is solved, and the production quality of plastic bags is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bag production, and particularly relates to a cutting and sealing device. Background Art

[0002] Plastic bags are item storage bags that can be seen everywhere in life today. The raw materials of plastic bags are in strip shape. When plastic bags are produced, the raw materials are conveyed in sequence under a sealing machine and a cutting knife through conveying, so that the sealing machine first performs a sealing operation on the raw materials, and then the cutting knife cuts the sealed raw materials, thus producing plastic bags.

[0003] However, during the conveying process of plastic bag raw materials, when the plastic bag raw materials are under the sealing machine or the cutting knife, the plastic bag raw materials are prone to looseness, resulting in uneven sealing or cutting openings, which affects the production quality of plastic bags. Summary of the Utility Model

[0004] The purpose of the utility model is to design a cutting and sealing device, which can solve the problems mentioned in the background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A cutting and sealing device includes a workbench. A conveying roller is arranged inside the workbench. Above the workbench, there are a sealing machine, a cutting knife and two cylinders. The output ends of the cylinders are elastically connected with two pressing plates in sequence along the conveying direction of the conveying roller. The sealing machine is fixedly connected with the output end of one of the cylinders and is located between the two pressing plates. The cutting knife is fixedly connected with the output end of the other cylinder and is located between the two pressing plates. The sealing machine and the cutting knife are arranged in sequence along the conveying direction of the conveying roller. An arc pressing block is arranged at the bottom of the pressing plate. An arc groove adapted to the arc pressing block is arranged at the top of the workbench. The distances between the sealing machine and the cutting knife and the top of the workbench are both smaller than the distance between the arc pressing block and the bottom in the arc groove.

[0007] Further, a support rod corresponding to the pressing plate is fixedly connected to the output end of the cylinder. A groove slidably connected with the support rod is arranged at the top of the pressing plate. A spring is connected between the bottom of the support rod and the bottom in the groove.

[0008] Furthermore, an outer support is arranged on the outer wall of the support rod, and an inner support is arranged on the inner wall of the groove. The bottom of the inner support contacts the top of the outer support.

[0009] Further, a support frame is fixedly connected to the top of the workbench, and the cylinder is installed on the support frame.

[0010] Furthermore, a knife slit is provided on the top of the workbench for the cutting knife to pass through.

[0011] Furthermore, a slope is provided at the end of the workbench along the conveying direction of the conveying roller.

[0012] Furthermore, a recycling box is provided at the bottom end of the slope.

[0013] Furthermore, an inclined surface docking with the slope is provided on the side wall of the recovery box close to the slope.

[0014] The beneficial effects of the utility model are:

[0015] When the sealing machine is driven downward by the cylinder to perform the sealing operation, the arc pressure blocks on both sides of the sealing machine will first press the plastic bag raw materials into the arc grooves, so that the plastic bag raw materials below the sealing machine are straightened, and then the sealing machine can perform the sealing operation on the straightened plastic bag raw materials, ensuring the flatness of the sealing; similarly, when the cutting knife is driven downward by the cylinder to perform the cutting operation, the arc pressure blocks will also straighten the plastic bag raw materials below the cutting knife, and then the cutting knife can perform the cutting operation on the straightened plastic bag raw materials, ensuring the flatness of the cutting mouth, solving the problem of unusual sealing or cutting mouths, and improving the production quality of plastic bags. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model after the support frame is hidden;

[0019] Figure 3 It is a partial cross-sectional view of the medium pressure plate of the utility model.

[0020] The names of the components marked in the figure are as follows:

[0021] 1. Workbench; 2. Conveyor roller; 3. Sealing machine; 4. Cutting knife; 5. Cylinder; 6. Pressing plate; 7. Arc pressing block; 8. Arc groove; 9. Support rod; 10. Groove; 11. Spring; 12. Outer support; 13. Inner support; 14. Support frame; 15. Knife slot; 16. Slope; 17. Recycling bin; 18. Inclined surface. Detailed implementation mode

[0022] To further elaborate on the technical means and effects adopted by the present utility model to achieve the intended utility model purpose, the following, in combination with the accompanying drawings and preferred embodiments, details the specific implementation mode, structure, features and effects of the present utility model as follows.

[0023] As Figures 1-3 shown, a cutting and sealing device includes a workbench 1. A conveyor roller 2 is arranged inside the workbench 1 for conveying plastic raw materials. Above the workbench 1, there are a sealing machine 3, a cutting knife 4 and two cylinders 5. A support frame 14 is fixedly connected to the top of the workbench 1. The cylinders 5 are installed on the support frame 14. Two pressing plates 6 are arranged in sequence along the conveying direction of the conveyor roller 2 at the output end of the cylinders 5. A support rod 9 corresponding to the pressing plate 6 is fixedly connected to the output end of the cylinder 5. A groove 10 for sliding connection with the support rod 9 is arranged at the top of the pressing plate 6. A spring 11 is connected between the bottom of the support rod 9 and the bottom inside the groove 10 to achieve elastic connection between the pressing plate 6 and the support rod 9. An outer support 12 is arranged on the outer wall of the support rod 9, and an inner support 13 is arranged on the inner wall of the groove 10. The bottom of the inner support 13 contacts the top of the outer support 12, so that when the pressing plate 6 is not working, the outer support can bear the weight of the pressing plate 6 to reduce the load on the spring;

[0024] The sealing machine 3 is fixedly connected to the output end of one of the cylinders 5 and is located between the two pressing plates 6. The cutting knife 4 is fixedly connected to the output end of the other cylinder 5 and is located between the two pressing plates 6. The sealing machine 3 and the cutting knife 4 are arranged in sequence along the conveying direction of the conveying roller 2. An arc pressing block 7 is provided at the bottom of the pressing plate 6. An arc groove 8 adapted to the arc pressing block 7 is provided at the top of the workbench 1. The plastic raw material is pressed into the arc groove 8 by the arc pressing plate 7, so as to achieve straightening of the plastic raw material; the distance between the sealing machine 3 and the cutting knife 4 and the top of the workbench 1 is smaller than the distance between the arc pressing block 7 and the bottom of the arc groove 8. The arc pressing block 7 can be first contacted with the plastic raw material and pressed into the arc groove 8, and the plastic raw material is first straightened. The raw materials are straightened, and then the sealing machine 3 or the cutting knife 4 contacts the plastic raw materials, and then the sealing operation or cutting operation is performed; a knife slit 15 is provided on the top of the workbench 1 for the cutting knife 4 to pass through, so as to prevent the cutting knife 4 from contacting the top of the workbench 1 and reduce the service life of the cutting knife 4; a slope 16 is provided at the end of the workbench 1 along the conveying direction of the conveying roller 2, and the cut plastic bags will slide down along the slope 16 to separate the plastic bags from the plastic raw materials; a recycling box 17 is provided at the bottom of the slope 16 for collecting plastic bags; an inclined surface 18 is provided on the side wall of the recycling box 17 close to the slope 16, which is connected to the slope 16, so that the recycling box 17 can better connect with the slope 16 and can better collect plastic bags.

[0025] Working principle:

[0026] like Figures 1-3 As shown, when the cutting and sealing device is in use, the plastic bag raw material is conveyed by the conveying roller 2, so that the plastic bag raw material can pass under the sealer 3 and the cutting knife 4 in sequence. When the cylinder 5 drives the sealer 3 to press down for sealing, the arc pressure blocks 7 located on both sides of the sealer 3 will first press the plastic bag raw material into the arc groove 8, so that the plastic bag raw material located under the sealer 3 is straightened. As the sealer 3 continues to press down, the spring 11 will be compressed until the sealer 3 can contact the plastic bag raw material and perform the sealing operation, thereby ensuring the flatness of the sealing. After completing the sealing operation, the cylinder 5 will drive the sealer 3 to rise and return to the initial position;

[0027] Similarly, when the cylinder 5 drives the cutting knife 4 to press down for cutting, the arc pressure blocks 7 on both sides of the cutting knife 4 will first press the plastic bag raw material into the arc groove 8, so that the plastic bag raw material under the cutting knife 4 is straightened. As the cutting knife 4 continues to press down, the spring 11 will be compressed until the cutting knife 4 can contact the plastic bag raw material and perform the cutting operation, thereby ensuring the flatness of the cutting port. After the cutting operation is completed, the cylinder 5 will drive the cutting knife 4 to rise and return to the initial position.

[0028] Finally, the plastic bag after the sealing and cutting operations will slide down the slope 16 into the recycling bin 17, realizing the separation of the plastic bag from the plastic raw materials.

[0029] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A cutting and sealing device, comprising a workbench (1), characterized in that, A conveying roller (2) is arranged inside the workbench (1), and a sealing machine (3), a cutting knife (4) and two cylinders (5) are arranged above the workbench (1). The output end of the cylinder (5) is elastically connected to two pressing plates (6) in sequence along the conveying direction of the conveying roller (2). The sealing machine (3) is fixedly connected to the output end of one of the cylinders (5) and is located between the two pressing plates (6). The cutting knife (4) is fixedly connected to the output end of the other cylinder (5) and is located between the two pressing plates (6). The sealing machine (3) and the cutting knife (4) are arranged in sequence along the conveying direction of the conveying roller (2). A circular arc pressing block (7) is arranged at the bottom of the pressing plate (6). A circular arc groove (8) adapted to the circular arc pressing block (7) is arranged at the top of the workbench (1). The distances between the sealing machine (3) and the cutting knife (4) and the top of the workbench (1) are both smaller than the distance between the circular arc pressing block (7) and the bottom of the circular arc groove (8).

2. The cutting and sealing device according to claim 1, wherein The output end of the cylinder (5) is fixedly connected to a support rod (9) corresponding to the pressure plate (6); the top of the pressure plate (6) is provided with a groove (10) slidably connected to the support rod (9); the bottom of the support rod (9) is connected to the bottom of the groove (10) via a spring (11).

3. The cutting and sealing device according to claim 2, wherein An outer support (12) is provided on the outer wall of the support rod (9), an inner support (13) is provided on the inner wall of the groove (10), and the bottom of the inner support (13) contacts the top of the outer support (12).

4. The cutting and sealing device according to claim 1, characterized in that, The top of the workbench (1) is fixedly connected to a support frame (14), and the cylinder (5) is installed on the support frame (14).

5. The cutting and sealing device according to claim 1, characterized in that, The top of the workbench (1) is provided with a knife slit (15) for the cutting knife (4) to pass through.

6. The cutting and sealing device according to claim 1, wherein A slope (16) is provided at the end of the workbench (1) along the conveying direction of the conveying roller (2).

7. The cutting and sealing device according to claim 6, characterized in that, A recovery box (17) is provided at the bottom end of the slope (16).

8. The cutting and sealing device according to claim 7, characterized in that, An inclined surface (18) that butts against the slope (16) is provided on the side wall of the recovery box (17) close to the slope (16).

Images