Heat sealing and cutting mechanism of plastic packaging machine

Abstract

The utility model relates to the technical field of plastic packaging machines, and discloses a heat sealing and cutting mechanism of a plastic packaging machine, which comprises a conveyor belt, a mounting rack is arranged above the conveyor belt, the upper side wall of the mounting rack is fixedly connected with a hydraulic cylinder, and the output end of the hydraulic cylinder penetrates through the side wall of the mounting rack and is fixedly connected with a heating seat. And a heat sealing cutter is fixedly connected to the lower side wall of the heating base and is of a frame-shaped structure, a motor is fixedly connected to the upper side wall of the mounting frame, and the output end of the motor penetrates through the side wall of the mounting frame. After plastic on the surface of a raw material roller in the heat sealing and cutting mechanism is used up, the plastic roller prepared in advance can be conveniently and quickly moved to a station to work, equipment does not need to be paused for a long time, the working efficiency of the heat sealing and cutting mechanism is guaranteed, the raw material roller does not need to be fixed through fixing pieces such as bolts, and the working efficiency is improved. And the convenience of replacing the raw material roller by an operator is improved.

Description

Technical Field

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

[0002] Laminator is a common packaging equipment, which is mainly used to seal products or items with plastic film to achieve the purpose of dustproof, moisture-proof, fresh-keeping, and extending the shelf life. It has both manual and automatic operation modes and can be used in various industries, such as food, medicine, daily chemicals, etc.

[0003] The patent with patent authorization announcement number CN 215707406 U proposes a heat-sealing and cutting mechanism for plastic film, comprising a frame, conveyor belts are installed on both sides of the middle part of the frame, a vertical frame is installed on the upper side of the frame, a top plate is installed on the upper side of the vertical frame, a hydraulic cylinder is installed in the middle of the upper side of the top plate, a hot cutting plate is installed on the lower side of the hydraulic cylinder, a heat-sealing knife is installed on the lower side of the hot cutting plate through a heating seat, a support seat is installed on the inner side of the vertical frame through a lead screw, and a feeding roller and a winding roller are respectively installed on the support seats on one side of the two vertical frames, and the feeding roller and the winding roller are arranged at the same level. The utility model conveys the product to be heat-sealed through the conveyor belt provided, and the product moves to the bottom of the hot cutting plate, the hydraulic cylinder drives the hot cutting plate and the heat-sealing knife to move downward, and at the same time, the heat-sealing knife is heated by the heating seat, and the heat-sealing knife heat-seals the plastic film at the upper opening of the product, thereby realizing the heat-sealing operation and processing, with a high degree of automation, convenient and quick operation, and conducive to improving the efficiency of heat sealing.

[0004] When the existing heat sealing and cutting mechanism is in use, it is necessary to use plastic film to package the articles. When a roll of plastic film is used up, the heat sealing and cutting mechanism needs to be suspended for a long time to replace the plastic film, which results in low working efficiency of the heat sealing and cutting mechanism of the plastic sealing machine. Utility Model Content

[0005] The utility model aims to solve the problem that in the prior art, when the heat sealing and cutting mechanism is in use, it is necessary to use plastic film to package articles. When a roll of plastic film is used up, it is necessary to pause the heat sealing and cutting mechanism for a long time to replace the plastic film, which leads to low working efficiency of the heat sealing and cutting mechanism of the plastic sealing machine. A heat sealing and cutting mechanism for a plastic sealing machine is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A heat sealing and cutting mechanism of a plastic sealing machine comprises a conveyor belt, a mounting frame is provided above the conveyor belt, an upper side wall of the mounting frame is fixedly connected to a hydraulic cylinder, an output end of the hydraulic cylinder penetrates the side wall of the mounting frame and is fixedly connected to a heating seat, a lower side wall of the heating seat is fixedly connected to a heat sealing knife, the heat sealing knife is a frame-type structure, an upper side wall of the mounting frame is fixedly connected to a motor, an output end of the motor penetrates the side wall of the mounting frame and is fixedly connected to a connecting frame, a lower side wall of the connecting frame is fixedly connected to a square frame, front and rear inner walls of the square frame are fixedly connected to a support frame, the support frame at the front side is fixedly connected to a raw material roller through a limiting mechanism, and the support frame at the rear side is fixedly connected to a winding roller through a limiting mechanism.

[0008] Preferably, the limiting mechanism includes a threaded cylinder rotatably connected to the side wall of the support frame, the front side wall of the support frame is provided with an installation groove, the left and right sides of the raw material roller and the winding roller are drivingly connected with square rods, the square rod is located in the installation groove, the upper side wall of the installation groove is provided with a positioning groove, and a positioning plate is inserted in the positioning groove, the lower side wall of the positioning plate is fixedly connected with two pins, the rod wall of the square rod is provided with a slot matching the pin, the side wall of the installation groove is rotatably connected with a threaded cylinder, a threaded rod is threadedly sleeved in the threaded cylinder, and the lower end of the threaded rod is fixedly connected to the positioning plate.

[0009] Preferably, the inner wall of the positioning groove is fixedly connected to a limiting slide plate, and the rod wall of the threaded rod is provided with a limiting slide groove that matches the limiting slide plate.

[0010] Preferably, cylinders are fixedly connected to the left and right sides of the threaded cylinder, and the inner wall of the cylinder is fixedly connected to an arc column via a spring, and the upper side wall of the support frame is provided with a plurality of arc grooves matching the arc columns.

[0011] Preferably, guide plates are fixedly connected to both left and right sides of the arc column, and a guide groove is formed on the inner wall of the cylinder.

[0012] Preferably, a transverse pin is fixedly connected to the side wall of the mounting groove, and a transverse groove is formed on the rod wall of the square rod.

[0013] Compared with the prior art, the utility model provides a heat sealing and cutting mechanism of a plastic sealing machine, which has the following beneficial effects:

[0014] 1. The heat sealing and cutting mechanism of the plastic sealing machine, through the set conveyor belt, mounting frame, hydraulic cylinder, heating seat, heat sealing knife, motor, connecting frame, frame, support frame, raw material roller and winding roller, can quickly and conveniently move the pre-prepared plastic roller to the working station for work after the plastic on the surface of the raw material roller inside the heat sealing and cutting mechanism is used up, without pausing the equipment for a long time, thus ensuring the working efficiency of the heat sealing and cutting mechanism.

[0015] 2. The heat sealing and cutting mechanism of the plastic sealing machine does not need to use bolts or other fixing parts to fix the raw material roller through the threaded cylinder, square rod, positioning plate and bayonet, which improves the convenience of operators to replace the raw material roller.

[0016] Moreover, the parts not involved in the device are the same as the prior art or can be implemented by using the prior art. After the plastic on the surface of the raw material roller inside the heat sealing and cutting mechanism is used up, the utility model can quickly and conveniently move the pre-prepared plastic roller to the work station for work, without pausing the equipment for a long time, thereby ensuring the working efficiency of the heat sealing and cutting mechanism and eliminating the need to use bolts and other fixings to fix the raw material roller, thereby improving the convenience of operators replacing the raw material roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a heat sealing and cutting mechanism of a plastic sealing machine proposed by the utility model;

[0018] Figure 2 for Figure 1 Side view of

[0019] Figure 3 This is a schematic diagram of the disassembly and assembly method of the raw material roller in the heat sealing and cutting mechanism of the plastic sealing machine proposed by the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of a cylinder in a heat sealing and cutting mechanism of a plastic sealing machine proposed by the utility model;

[0021] Figure 5 The utility model discloses a schematic diagram of the internal structure of a square frame in a heat-sealing and cutting mechanism of a plastic sealing machine.

[0022] In the figure: 1. conveyor belt; 2. mounting frame; 3. hydraulic cylinder; 4. heating seat; 5. heat sealing knife; 6. motor; 7. connecting frame; 8. square frame; 9. supporting frame; 10. raw material roller; 11. winding roller; 12. threaded cylinder; 13. square rod; 14. positioning plate; 15. latch; 17. threaded rod; 18. limiting slide plate; 19. cylinder; 20. arc column; 21. guide plate; 22. cross pin. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Reference Figure 1-5A heat sealing and cutting mechanism of a plastic sealing machine comprises a conveyor belt 1, a mounting frame 2 is arranged above the conveyor belt 1, a hydraulic cylinder 3 is fixedly connected to the upper side wall of the mounting frame 2, the output end of the hydraulic cylinder 3 passes through the side wall of the mounting frame 2 and is fixedly connected to a heating seat 4, a heat sealing knife 5 is fixedly connected to the lower side wall of the heating seat 4, the heat sealing knife 5 is a frame-type structure, a motor 6 is fixedly connected to the upper side wall of the mounting frame 2, the output end of the motor 6 passes through the side wall of the mounting frame 2 and is fixedly connected to a connecting frame 7, a square frame 8 is fixedly connected to the lower side wall of the connecting frame 7, a support frame 9 is fixedly connected to the inner walls on both sides of the front and rear sides of the square frame 8, a raw material roller 10 is fixedly connected to the support frame 9 at the front side through a limiting mechanism, and a winding roller 11 is fixedly connected to the support frame 9 at the rear side through a limiting mechanism.

[0025] The limiting mechanism includes a threaded cylinder 12 rotatably connected to the side wall of the support frame 9, a mounting groove is provided on the front side wall of the support frame 9, and the left and right sides of the raw material roller 10 and the winding roller 11 are both drivingly connected with square rods 13, the square rod 13 is located in the mounting groove, and a positioning groove is provided on the upper side wall of the mounting groove, and a positioning plate 14 is inserted in the positioning groove, and two bayonet pins 15 are fixedly connected to the lower side wall of the positioning plate 14, and a rod wall of the square rod 13 is provided with a bayonet groove matching the bayonet pins 15, the side wall of the mounting groove is rotatably connected with the threaded cylinder 12, and a threaded rod 17 is threadedly sleeved on the inner thread of the threaded cylinder 12, and the lower end of the threaded rod 17 is fixedly connected to the positioning plate 14, so as to facilitate the replacement of the raw material roller 10.

[0026] The inner wall of the positioning groove is fixedly connected to a limiting slide plate 18, and the rod wall of the threaded rod 17 is provided with a limiting slide groove that matches the limiting slide plate 18. The limiting slide plate 18 and the limiting slide groove cooperate with each other to prevent the threaded rod 17 from rotating, so that the threaded rod 17 can only move up and down in the vertical direction.

[0027] The left and right sides of the threaded barrel 12 are fixedly connected with a cylinder 19, and the inner wall of the cylinder 19 is fixedly connected with an arc column 20 through a spring. The upper side wall of the support frame 9 is provided with a plurality of arc grooves matching the arc column 20, thereby improving the stability of the placement of the threaded barrel 12.

[0028] The left and right sides of the arc column 20 are fixedly connected with guide plates 21, and the inner wall of the cylinder 19 is provided with guide grooves, which improves the stability of the arc column 20 when it is lifted and lowered.

[0029] The side wall of the installation groove is fixedly connected with a transverse pin 22, and the rod wall of the square rod 13 is provided with a transverse groove, which improves the stability of the placement of the square rod 13.

[0030] In the utility model, when in use, after the plastic film on the surface of the front raw material roller 10 is used up, the motor 6 is started to work, the motor 6 drives the square frame 8 to rotate, the square frame 8 drives the raw material tubes 10 on the front and rear sides to exchange positions, and then continue to work. When the work is completed, the threaded cylinder 12 is rotated to drive the threaded rod 17 to move upward through the threaded cooperation, and the threaded rod 17 drives the positioning plate 14 and the bayonet 15 to move upward, thereby releasing the limit of the other rod 13, and the raw material roller 10 can be drawn out. The raw material roller 10 can be installed by reverse operation. When the conveyor belt 1 drives the material to move to the bottom of the heat sealing knife 5, the conveyor belt 1 is paused, and then the hydraulic cylinder 3 is started to work, and the hydraulic cylinder 3 drives the heating seat 4 and the heat sealing knife 5 to move downward together. The heat sealing knife 5 will drive the plastic film to move downward, so that the film covers the surface of the object, and then the heat sealing knife 5 is heated to package the article.

Claims

1. A heat sealing and cutting mechanism of a plastic sealing machine, comprising a conveyor belt (1), characterized in that: A mounting frame (2) is provided above the conveyor belt (1); a hydraulic cylinder (3) is fixedly connected to the upper side wall of the mounting frame (2); an output end of the hydraulic cylinder (3) passes through the side wall of the mounting frame (2) and is fixedly connected to a heating seat (4); a heat sealing knife (5) is fixedly connected to the lower side wall of the heating seat (4); the heat sealing knife (5) is a frame-type structure; a motor (6) is fixedly connected to the upper side wall of the mounting frame (2); an output end of the motor (6) passes through the side wall of the mounting frame (2) and is fixedly connected to a connecting frame (7); a square frame (8) is fixedly connected to the lower side wall of the connecting frame (7); a support frame (9) is fixedly connected to the inner walls on both the front and rear sides of the square frame (8); the support frame (9) located at the front side is fixedly connected to a raw material roller (10) through a limiting mechanism; and the support frame (9) located at the rear side is fixedly connected to a winding roller (11) through a limiting mechanism.

2. The heat sealing and cutting mechanism of a plastic sealing machine according to claim 1, characterized in that: The limiting mechanism comprises a threaded cylinder (12) rotatably connected to the side wall of the support frame (9); a mounting groove is provided on the front side wall of the support frame (9); the left and right sides of the raw material roller (10) and the winding roller (11) are both drivingly connected to square rods (13); the square rods (13) are located in the mounting groove; a positioning groove is provided on the upper side wall of the mounting groove, and a positioning plate (14) is inserted in the positioning groove; two bayonet pins (15) are fixedly connected to the lower side wall of the positioning plate (14); a rod wall of the square rod (13) is provided with a bayonet groove matching the bayonet pins (15); the side wall of the mounting groove is rotatably connected to the threaded cylinder (12); a threaded rod (17) is internally threadedly sleeved on the threaded cylinder (12); the lower end of the threaded rod (17) is fixedly connected to the positioning plate (14).

3. The heat sealing and cutting mechanism of a plastic sealing machine according to claim 2, characterized in that: The inner wall of the positioning groove is fixedly connected to a limiting slide plate (18), and the rod wall of the threaded rod (17) is provided with a limiting slide groove that matches the limiting slide plate (18).

4. The heat sealing and cutting mechanism of a plastic sealing machine according to claim 2, characterized in that: The left and right sides of the threaded cylinder (12) are fixedly connected to a cylinder (19), and the inner wall of the cylinder (19) is fixedly connected to an arc column (20) via a spring. The upper side wall of the support frame (9) is provided with a plurality of arc grooves matching the arc column (20).

5. The heat sealing and cutting mechanism of a plastic sealing machine according to claim 4, characterized in that: Guide plates (21) are fixedly connected to the left and right sides of the arc column (20), and a guide groove is provided on the inner wall of the cylinder (19).

6. The heat sealing and cutting mechanism of a plastic sealing machine according to claim 2, characterized in that: A transverse pin (22) is fixedly connected to the side wall of the installation groove, and a transverse groove is formed on the rod wall of the square rod (13).

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