Rocker arm type double-station packaging bag heat sealing device

Abstract

A rocker arm type double-station packaging bag heat sealing device comprises a rocker arm driving mechanism and a heat sealing mechanism which are installed on a rack, two vertical guide rails are symmetrically arranged on the two sides of the interior of the rack, and the two sides of the heat sealing mechanism are connected with the two guide rails through sliding blocks; the rocker arm driving mechanism comprises a motor, a rocker arm and a connecting rod, a motor support is arranged at the bottom of the rack, the motor is installed in the motor support, the rocker arm is vertically connected to the outer end of an output shaft of the motor, the lower end of the connecting rod is hinged to the upper end of the rocker arm, and the upper end of the connecting rod is hinged to the middle of the heat sealing mechanism; according to the device, the heat sealing mechanism is driven by the rocker arm driving mechanism to move up and down in a reciprocating manner, so that after the bottom of a packaging bag is subjected to heat sealing, the packaging bag can be clamped and pulled to move downwards through the movement of the heat sealing mechanism, the upper end opening of the packaging bag corresponds to the heat sealing mechanism, and the bag opening is subjected to heat sealing; continuous heat seal packaging can be achieved without a pull-down mechanism, packaging errors caused by cooperation between the mechanisms are avoided, the packaging quality can be effectively improved, and the equipment cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment for granular products, and in particular to a rocker arm type dual-station packaging bag heat sealing device. Background Technology

[0002] The vertical granular bag packaging machine is a high-efficiency, automated packaging equipment mainly used for packaging granular materials. Its working principle is as follows: the material to be packaged falls from the feeding hopper into a vibrating feeder. The vibrating feeder vibrates at a certain frequency, evenly distributing the material into the weighing hopper. When the weight of the material in the hopper equals the weighing value, feeding stops, completing the weighing process. The packaging machine then shapes the rolled packaging material into a bag shape, or opens a pre-made bag, and fills the bag with the weighed granular material. A heat-sealing mechanism seals the bag containing the material, melting and bonding the sealing area of ​​the packaging material together to form a sealed package. After sealing, a cutting device cuts the continuous packaging bags into individual finished packaging products. Currently, heat sealing mechanisms are usually fixedly installed on the frame of the packaging machine. A roller-type pull-down mechanism is set below the heat sealing mechanism to pull the packaging bag downwards. The pull-down and heat sealing actions are alternated to achieve continuous heat sealing packaging. This method requires high precision in the coordination between the pull-down mechanism and the hot air mechanism. The assembly tolerance increases in continuous packaging operations, which can easily lead to quality problems. This problem needs to be solved by simplifying the mechanism. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a rocker arm type dual-station packaging bag heat sealing device.

[0004] The technical solution of this utility model is: a rocker arm type dual-station packaging bag heat sealing device, including a rocker arm drive mechanism and a heat sealing mechanism installed on a frame. Two vertical guide rails are symmetrically arranged on both sides inside the frame. The two sides of the heat sealing mechanism are connected to the two guide rails through sliders. The rocker arm drive mechanism includes a motor, a rocker arm and a connecting rod. The motor is a geared motor. A motor support is provided at the bottom of the frame. The main body of the motor support is an L-shaped plate. Reinforcing side plates are provided on both sides of the L-shaped plate. The motor is installed in the motor support. The rocker arm is vertically connected to the outer end of the output shaft of the motor. The lower end of the connecting rod is hinged to the upper end of the rocker arm. The upper end of the connecting rod is hinged to the middle of the heat sealing mechanism.

[0005] Preferably, the main body of the heat sealing mechanism has guide posts slidably connected to both ends. The guide posts are slidably connected to the main body via sliding sleeves. A sliding seat is connected between the middle of the two guide posts on one side of the main body. An inner heating block is provided on the inner side of the sliding seat. An auxiliary support plate is provided between the inner heating block and the sliding seat. The inner heating block is fixedly connected to the inner side of the auxiliary support plate. A movable seat is fixedly connected between the ends of the two guide posts on the outer side of the sliding seat. An outer heating block is provided on the side of the movable seat, which is directly opposite to the inner heating block. An auxiliary support plate is provided between the outer heating block and the movable seat. The outer heating block is fixedly connected to the inner side of the auxiliary support plate. Cylinder A and Cylinder B are provided in the middle of the main body. The tail ends of the two cylinders are fixedly connected. The piston rod A of cylinder A is connected to the middle of the sliding seat. A connecting plate is provided between the outer ends of the two guide posts on the other side of the main body. The piston rod B of cylinder B is connected to the middle of the connecting plate.

[0006] Preferably, a U-shaped auxiliary bracket is provided between the two ends of the main body, two guide posts pass through the two sides of the U-shaped auxiliary bracket respectively, the guide posts and the U-shaped auxiliary bracket are connected by a sliding sleeve, and piston rod B passes through the through hole in the middle of the U-shaped auxiliary bracket.

[0007] Preferably, the bottom surface of the inner heating block is provided with an inner exhaust pressure plate, which is perpendicularly connected to the middle of the bottom surface of the inner heating block, and the bottom surface of the outer heating block is provided with an outer exhaust pressure plate, which is perpendicularly connected to the middle of the bottom surface of the outer heating block.

[0008] Preferably, the upper end of the main body of the connecting rod is connected to an upper bearing seat, the middle part of the heat sealing mechanism is connected to the upper bearing seat through a short shaft, the lower end is connected to a lower bearing seat, the upper end of the rocker arm is connected to the lower bearing seat through a short shaft, the length of the connecting rod is greater than the length of the rocker arm, and the connecting rod is a hexagonal shaft.

[0009] Preferably, both ends of the main body of the connecting rod are provided with threaded shafts, and the threaded shafts at both ends are respectively threadedly connected to two bearing seats. The bearing seats are provided with threaded holes in the middle, and the threaded shafts are fitted into the threaded holes.

[0010] The beneficial technical effects of this utility model are as follows: The heat sealing mechanism of this rocker arm type dual-station packaging bag heat sealing device is slidably connected to the frame through the guide rail, and is driven to move up and down reciprocally by the rocker arm drive mechanism. Therefore, after the bottom of the packaging bag is heat sealed, the movement of the heat sealing mechanism itself can clamp and pull the packaging bag downward, so that the upper end of the packaging bag corresponds with the heat sealing mechanism, and the bag opening is heat sealed. Continuous heat sealing packaging can be achieved without setting a pull-down mechanism, avoiding packaging errors caused by the cooperation between mechanisms, effectively improving packaging quality and reducing equipment costs. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0012] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0013] Figure 3 This is a top view of the heat sealing mechanism.

[0014] Figure 4 This is a schematic diagram of the structure of this utility model installed on the frame.

[0015] In the diagram, 01. Rocker arm drive mechanism, 11. Motor, 111. Motor support, 12. Rocker arm, 13. Connecting rod, 131. Upper bearing seat, 132. Lower bearing seat, 02. Heat sealing mechanism, 21. Slider, 22. Sliding seat, 221. Inner heating block, 23. Moving seat, 231. Outer heating block, 24. Cylinder A, 241. Piston rod A, 25. Cylinder B, 251. Piston rod B, 26. Connecting plate, 27. U-shaped auxiliary bracket, 28. Inner exhaust pressure plate, 29. Outer exhaust pressure plate, 31. Guide rail, 32. Main body, 33. Guide column, 34. Frame. Detailed Implementation

[0016] Example 1, see appendix Figure 1-2 4. A rocker arm type dual-station packaging bag heat sealing device, including a rocker arm 12 drive mechanism 01 and a heat sealing mechanism 02 mounted on a frame 34. Two vertical guide rails 31 are symmetrically arranged on both sides inside the frame 34. The two sides of the heat sealing mechanism 02 are connected to the two guide rails 31 through sliders 21. The heat sealing mechanism can slide along the guide rails through the sliders. The rocker arm 12 drive mechanism 01 includes a motor 11, a rocker arm 12 and a connecting rod 13. A motor support 111 is provided at the bottom of the frame 34. The motor 11 is installed in the motor support 111. The rocker arm 12 is vertically connected to the outer end of the output shaft of the motor 11. The lower end of the connecting rod 13 is hinged to the upper end of the rocker arm 12. The upper end of the connecting rod 13 is hinged to the middle of the heat sealing mechanism 02. The rocker arm 12 drive mechanism 01 drives the rocker arm 12 to rotate via motor 11. When the rocker arm rotates to the upper part, it pushes the heat sealing mechanism 02 upward via connecting rod 13, causing it to slide upward along the guide rail 31. When the rocker arm 12 rotates to the lower part, it pulls the heat sealing mechanism 02 downward via connecting rod 13, causing it to slide downward along the guide rail 31.

[0017] The upper end of the main rod of the connecting rod 13 is connected to the upper bearing seat 131. The middle part of the heat sealing mechanism 02 is connected to the upper bearing seat 131 through a short shaft, and the lower end is connected to the lower bearing seat 132. The upper end of the rocker arm 12 is connected to the lower bearing seat 132 through a short shaft. Both ends of the main rod of the connecting rod 13 are provided with threaded shafts, and the threaded shafts at both ends are threadedly connected to the two bearing seats respectively. The main rod can be rotated to adjust the connection length of the bearing seats through the threads, thereby adjusting the length of the main rod, which is beneficial for assembly and subsequent debugging and maintenance operations.

[0018] When the rocker arm 12 type dual-station packaging bag heat sealing device of this embodiment is working, the rocker arm 12 drive mechanism 01 drives the heat sealing mechanism 02 to move up and down reciprocally. After the heat sealing mechanism 02 heat seals the bottom of the packaging bag, it keeps the bag in a clamped state and pulls the packaging bag downward. When the upper end of the packaging bag moves to the heat sealing position, the heat sealing mechanism 02 releases the packaging bag and moves upward to the heat sealing position to heat seal the bag opening. The reciprocating movement of the heat sealing mechanism 02 realizes the continuous heat sealing packaging operation of the packaging bag.

[0019] Example 2, see appendix Figure 1 , 3 This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that: both ends of the main body 32 of the heat sealing mechanism 02 are slidably connected to guide posts 33, and a sliding seat 22 is connected between the middle of the two guide posts 33 on one side of the main body 32. The sliding seat can slide freely back and forth along the two guide posts. An inner heating block 221 is provided on the inner side of the sliding seat 22, and a movable seat 23 is fixedly connected between the ends of the two guide posts 33 on the outer side of the sliding seat 22. The movable seat 23 can slide along the main body 32 integrally with the guide posts 33. An outer heating block 221 is provided on the side of the movable seat 23, which is directly opposite to the inner heating block 221. Heating block 231, outer heating block 231 and inner heating block 221 move towards each other and come into contact to achieve heat sealing of the packaging bag; cylinder A 24 and cylinder B 25 are provided in the middle of the main body 32. The piston rod A 241 of cylinder A 24 is connected to the middle of the sliding seat 22. Cylinder A 24 pushes and pulls the sliding seat 22 and the heating block to slide along the guide post 33. A connecting plate 26 is provided between the outer ends of the two guide posts 33 on the other side of the main body 32. The piston rod B 251 of cylinder B 25 is connected to the middle of the connecting plate 26. Cylinder B 25 pushes and pulls the connecting plate 26 and the guide post 33 to slide along the main body 32.

[0020] A U-shaped auxiliary bracket 27 is provided between the two ends of the main body 32. The piston rod 251 passes through the through hole in the middle of the U-shaped auxiliary bracket 27, and the guide post 33 slides through the end of the U-shaped auxiliary bracket 27. The U-shaped auxiliary bracket 27 provides auxiliary support for the guide post 33 and improves the sliding stability of the guide post 33.

[0021] The bottom surface of the inner heating block 221 is provided with an inner exhaust pressure plate 28, and the bottom surface of the outer heating block 231 is provided with an outer exhaust pressure plate 29. During the closing process of the inner heating block 221 and the outer heating block 231, the two exhaust pressure plates can press the packaging bag from both sides to expel the air inside the packaging bag and improve the packaging quality.

[0022] When the heat sealing mechanism 02 is working, cylinder A 24 and cylinder B 25 are started simultaneously. Cylinder A 24 drives the sliding seat 22 and the inner heating block 221 to slide outward along the two guide posts 33. Cylinder B 25 drives the guide post 33 to slide along the main body 32 through the connecting plate 26. The movable seat 23 at the end of the guide post 33 and the outer heating block 231 slide inward. The two heating blocks slide towards each other and contact each other to achieve heat sealing of the packaging bag.

Claims

1. A rocker arm type double station packaging bag heat sealing apparatus, characterized by: The device includes a rocker arm drive mechanism and a heat sealing mechanism mounted on a frame. Two vertical guide rails are symmetrically arranged on both sides inside the frame. The two sides of the heat sealing mechanism are connected to the two guide rails through sliders. The rocker arm drive mechanism includes a motor, a rocker arm, and a connecting rod. A motor support is provided at the bottom of the frame, and the motor is installed in the motor support. The rocker arm is vertically connected to the outer end of the motor's output shaft. The lower end of the connecting rod is hinged to the upper end of the rocker arm, and the upper end of the connecting rod is hinged to the middle of the heat sealing mechanism.

2. A rocker arm type double station packaging bag heat sealing apparatus according to claim 1, characterized in that: The main body of the heat sealing mechanism has guide posts slidably connected to both ends. A sliding seat is connected between the middle of the two guide posts on one side of the main body. An inner heating block is provided on the inner side of the sliding seat. A movable seat is fixedly connected between the ends of the two guide posts on the outer side of the sliding seat. An outer heating block is provided on the side of the movable seat, which is directly opposite to the inner heating block. Cylinder A and Cylinder B are provided in the middle of the main body. The piston rod A of cylinder A is connected to the middle of the sliding seat. A connecting plate is provided between the outer ends of the two guide posts on the other side of the main body. The piston rod B of cylinder B is connected to the middle of the connecting plate.

3. A rocker arm type double station packaging bag heat sealing apparatus according to claim 2, characterized in that: A U-shaped auxiliary bracket is provided between the two ends of the main body, and piston rod B passes through the through hole in the middle of the U-shaped auxiliary bracket.

4. A rocker arm type double station packaging bag heat sealing apparatus according to claim 2, characterized in that: The bottom surface of the inner heating block is provided with an inner exhaust pressure plate, and the bottom surface of the outer heating block is provided with an outer exhaust pressure plate.

5. The rocker-arm type double-station packaging bag heat sealing apparatus according to claim 1, characterized in that: The upper end of the main rod of the connecting rod is connected to the upper bearing seat, the middle part of the heat sealing mechanism is connected to the upper bearing seat through a short shaft, the lower end is connected to the lower bearing seat, and the upper end of the rocker arm is connected to the lower bearing seat through a short shaft.

6. A rocker arm double station bag sealing apparatus as defined in claim 5 wherein: Both ends of the main body of the connecting rod are provided with threaded shafts, and the threaded shafts at both ends are respectively threadedly connected to the two bearing seats.

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