Bag sealing and cutting device

Abstract

The utility model relates to a more durable bag making machine seal cutting device. This bag making machine seal cutting device includes frame and seal cutting mechanism, and the seal cutting mechanism includes seal cutting knife, seal cutting base and the seal cutting power source that drives seal cutting knife to move up and down, and the seal cutting knife can act on the seal cutting base from top to bottom and cooperate to complete the seal cutting to the bag, and its characterized in that: the horizontal guide rail is installed on the frame, the sliding block is slidably installed on the horizontal guide rail, the seal cutting base is installed on the sliding block, and the sliding block is in transmission connection with the horizontal power source that drives the sliding block to move. This bag making machine seal cutting device moves the seal cutting base horizontally, lets the seal cutting knife not always act on a line of the seal cutting base, guarantees that the seal cutting base is not easy to be poked out the groove, makes the seal cutting base more durable.

Description

Technical Field

[0001] This utility model relates to a bag making machine, specifically to a sealing and cutting device for the bag making machine. Background Technology

[0002] A bag-making machine is a device used to produce bags. Generally, a bag-making machine includes a sealing and cutting device. This device cuts consecutive bags and simultaneously heat-seals the edges of adjacent bags, forming individual bags that are then stacked together. Once the stack reaches a certain height, a robotic arm removes the stack. For example, utility model patent CN115464928B discloses a high-speed sealing and cutting bag-making machine. This machine includes a heat-sealing knife and a heat-sealing pad. The heat-sealing knife presses down on the heat-sealing pad to cut the bag. However, the heat-sealing pad 13 is fixed to the machine body 1. Because the heat-sealing knife only cuts along one line of the heat-sealing pad 13 for an extended period, a dent will be formed in the pad 13. This prevents the heat-sealing knife from effectively cutting the film, affecting the sealing and cutting function. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, this utility model innovatively provides a more durable sealing and cutting device for bag making machines.

[0004] This bag-making machine sealing and cutting device includes a frame and a sealing and cutting mechanism. The sealing and cutting mechanism includes a sealing and cutting knife, a sealing and cutting base, and a sealing and cutting power source that drives the sealing and cutting knife to move up and down. The sealing and cutting knife can act on the sealing and cutting base from top to bottom and cooperate to seal and cut the bag. The machine is characterized in that: a horizontal guide rail is installed on the frame, a slider is slidably installed on the horizontal guide rail, the sealing and cutting base is installed on the slider, and the slider is connected to the translational power source that drives the slider to move.

[0005] A rotatable drive shaft is mounted on the frame, a gear is connected to the drive shaft, a rack is connected to the slider, the rack meshes with the gear, and the translational power source is connected to the drive shaft.

[0006] The frame is equipped with a first sensor and a second sensor. The slider is located at a corresponding position between the first sensor and the second sensor. Both the first sensor and the second sensor are connected to the control system. The control system controls the translational force source to work. The translational force source restricts the slider to move back and forth only at the corresponding position between the first sensor and the second sensor. The sealing and cutting blade can act on the sealing and cutting base within the movement range of the slider.

[0007] The upper surface of the sealing and cutting base is provided with a soft blade pad, and the sealing and cutting blade can act on the soft blade pad.

[0008] The sealing and cutting base is provided with a groove, and the soft blade pad is placed in the groove.

[0009] The sealing and cutting knife is mounted on the sealing and cutting knife holder, which is mounted on the sealing and cutting crossbeam. The sealing and cutting crossbeam is connected to the lifting slide. A vertical guide rail is mounted on the frame, and the lifting slide is slidably mounted on the vertical guide rail. A sealing and cutting power source is mounted on the frame, and the sealing and cutting power source is connected to the lifting slide in a transmission manner.

[0010] An output shaft is rotatably mounted on the frame, an eccentric bearing is connected to the output shaft, a cylinder is connected to the outer ring of the eccentric bearing, and the piston rod of the cylinder is connected to the lifting slide.

[0011] A connecting rod is connected to the sealing and cutting blade holder. The connecting rod is movably mounted on the sealing and cutting crossbeam. A spring is sleeved on the connecting rod, and the spring is located between the sealing and cutting crossbeam and the sealing and cutting blade holder.

[0012] According to the sealing and cutting device of the bag making machine provided by this utility model, by horizontally moving the sealing and cutting base, the sealing and cutting knife no longer acts on a single line of the sealing and cutting base, ensuring that the sealing and cutting base is not easily punctured and making the sealing and cutting base more durable. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 for Figure 3 A partial schematic diagram. Detailed Implementation

[0014] like Figure 1 and Figure 2 As shown, this bag-making machine sealing and cutting device includes a frame 1, a traction mechanism 3, a bag-dispensing mechanism 4, a sealing and cutting mechanism 2, and a bag-collecting mechanism 5. The traction mechanism 3 conveys a continuous film forward, the sealing and cutting mechanism 2 heat-cuts individual bags onto the continuous film, the bag-dispensing mechanism 4 pushes the front end of the bag downwards, and the bag-collecting mechanism 5 stacks and presses down the bags, allowing the sealing and cutting mechanism 2 to cut smoothly. Of course, the traction mechanism 3, the bag-dispensing mechanism 4, the sealing and cutting mechanism 2, and the bag-collecting mechanism 5 are all existing technologies, and are only briefly described here.

[0015] like Figure 3As shown, this sealing and cutting mechanism 2 includes a sealing and cutting blade 20, a sealing and cutting base 21, and a sealing and cutting power source 23 that drives the sealing and cutting blade 20 to move up and down. The sealing and cutting blade 20 can act on the sealing and cutting base 21 from top to bottom and cooperate to seal and cut the bag. In order to solve the problems of the prior art, a horizontal guide rail 24 is installed on the frame 1, and a slider 25 is slidably installed on the horizontal guide rail 24. The sealing and cutting base 21 is installed on the slider 25, and the slider 25 is connected to the translational force source 22 that drives the slider 25 to move. During operation, the sealing and cutting blade 20 acts on the sealing and cutting base 21 from top to bottom to heat-cut the bag. After heat-cutting for a period of time (such as several hours or a day), the translational power source 22 drives the slider 25 to carry the sealing and cutting base 21 to move on the horizontal guide rail 24. After moving a certain distance, the slider 25 stops moving. In this way, the position of the sealing and cutting base 21 changes, and the position of the sealing and cutting blade 20 acting on the sealing and cutting base 21 also changes. The sealing and cutting blade 20 no longer acts on a single line of the sealing and cutting base 21, but changes its position frequently. This can significantly improve the durability of the sealing and cutting base 21, thereby improving the stability and durability of the sealing and cutting mechanism 2.

[0016] To move the transmission slider 25, such as Figure 4 As shown, a rotatable drive shaft 28 is mounted on the frame 1. A gear 27 is connected to the drive shaft 28, and a rack 26 is connected to the slider 25. The rack 26 meshes with the gear 27. A translational power source 22 is connected to the drive shaft 28. The translational power source 22 drives the drive shaft 28 to rotate, and the gear 27 drives the rack 26 to move. Since the rack 26 is connected to the slider 25, the slider 25 moves the sealing and cutting base 21. Of course, the slider 25 can also be moved directly by a cylinder or a motor.

[0017] To limit the movement range of the sealing and cutting base 21, ensuring that the sealing and cutting base 21 always remains below the sealing and cutting blade 20, such as... Figure 4As shown, a first sensor 61 and a second sensor 62 (the sensors can be proximity switches, Hall effect switches, or photoelectric sensors) are installed on the frame 1. The slider 25 is located at a corresponding position between the first sensor 61 and the second sensor 62. Both the first sensor 61 and the second sensor 62 are connected to the control system, which controls the translational power source 22 to operate. Under the sensing of the first sensor 61 and the second sensor 62, the control system controls the translational power source 22 to operate, so that the translational power source 22 restricts the slider 25 to move back and forth only at the corresponding position between the first sensor 61 and the second sensor 62, allowing the sealing and cutting blade 20 to act on the sealing and cutting base 21 within the movement range of the slider 25. Of course, without using sensors, the control system can be programmed to control the output of the translational power source 22 (for example, by controlling the motor through a PLC program), so that the sealing and cutting blade 20 can act on the sealing and cutting base 21 within the movement range of the slider 25.

[0018] like Figure 4 As shown, a soft blade pad 210 is provided on the upper surface of the sealing and cutting base 21, and the sealing and cutting blade 20 can act on the soft blade pad 210. The soft blade pad 210 works with the sealing and cutting blade 20 to cut the bag.

[0019] To facilitate the placement of the soft blade pad 210, a groove is provided on the sealing and cutting base 21, and the soft blade pad 210 is placed in the groove. This groove facilitates the placement of the soft blade pad 210 and prevents the soft blade pad 210 from moving left and right.

[0020] like Figure 3 As shown, the sealing and cutting blade 20 is mounted on the sealing and cutting blade holder 201, which is mounted on the sealing and cutting crossbeam 202. The sealing and cutting crossbeam 202 is connected to the lifting slide 203. A vertical guide rail 204 is mounted on the frame 1, and the lifting slide 203 slides on the vertical guide rail 204. A sealing and cutting power source 23 is mounted on the frame 1, and the sealing and cutting power source 23 is connected to the lifting slide 203 via a transmission connection. Driven by the sealing and cutting power source 23, the lifting slide 203 moves up and down along the vertical guide rail 204, thus enabling the sealing and cutting blade 20 to move up and down.

[0021] Additionally, an output shaft 230 is rotatably mounted on the frame 1. The output shaft 230 is connected to the sealing and cutting power source 23. An eccentric bearing 205 is connected to the output shaft 230, and a cylinder 206 is connected to the outer ring of the eccentric bearing 205. The piston rod of the cylinder 206 is connected to the lifting slide 203. When the sealing and cutting power source 23 drives the output shaft 230 to rotate, the eccentric bearing 205 rotates, and the outer ring of the eccentric bearing 205 pulls the cylinder 206 to move up and down. The cylinder 206 then pulls the lifting slide 203 to move up and down. Here, the cylinder 206 acts as a spring (the cylinder 206 contains air, which acts as a buffer), allowing the sealing and cutting knife 20 to act on the sealing and cutting base 21 with a buffer. This not only improves the sealing and cutting effect of the bag, but also improves the stability and durability of the sealing and cutting mechanism 2.

[0022] Finally, it is worth mentioning that a connecting rod 207 (with a limiter attached to the connecting rod 207 to prevent it from falling) is connected to the sealing and cutting blade holder 201. The connecting rod 207 is vertically mounted on the sealing and cutting crossbeam 202, and a spring 208 is fitted on the connecting rod 207, located between the sealing and cutting crossbeam 202 and the sealing and cutting blade holder 201. The spring 208 acts as a buffer between the sealing and cutting crossbeam 202 and the sealing and cutting blade holder 201, which also improves the sealing and cutting effect of the bag and enhances the stability and durability of the sealing and cutting mechanism 2.

Claims

1. A bag-making machine sealing and cutting device, comprising a frame (1) and a sealing and cutting mechanism (2), wherein the sealing and cutting mechanism (2) includes a sealing and cutting blade (20), a sealing and cutting base (21), and a sealing and cutting power source (23) for driving the sealing and cutting blade (20) to move up and down, wherein the sealing and cutting blade (20) can act on the sealing and cutting base (21) from top to bottom and cooperate to seal and cut the bag, characterized in that: A horizontal guide rail (24) is installed on the frame (1), and a slider (25) is slidably installed on the horizontal guide rail (24). The sealing and cutting base (21) is installed on the slider (25), and the slider (25) is connected to the translational force source (22) that drives the slider (25) to move.

2. The sealing and cutting device for a bag making machine according to claim 1, characterized in that: The frame (1) is equipped with a rotatable drive shaft (28), a gear (27) is connected to the drive shaft (28), a rack (26) is connected to the slider (25), the rack (26) meshes with the gear (27), and the translational power source (22) is connected to the drive shaft (28) for transmission.

3. A bag-making machine sealing and cutting device according to claim 1 or 2, characterized in that: The frame (1) is equipped with a first sensor (61) and a second sensor (62). The slider (25) is located at the corresponding position between the first sensor (61) and the second sensor (62). The first sensor (61) and the second sensor (62) are both connected to the control system. The control system controls the translational force source (22) to work. The translational force source (22) restricts the slider (25) to move back and forth only at the corresponding position between the first sensor (61) and the second sensor (62). The sealing and cutting knife (20) can act on the sealing and cutting base (21) within the movement range of the slider (25).

4. A bag-making machine sealing and cutting device according to claim 1 or 2, characterized in that: The upper surface of the sealing and cutting base (21) is provided with a soft blade pad (210), and the sealing and cutting blade (20) can act on the soft blade pad (210).

5. The sealing and cutting device for a bag making machine according to claim 4, characterized in that: The sealing and cutting base (21) is provided with a groove, and the soft blade pad (210) is provided in the groove.

6. The sealing and cutting device for a bag making machine according to claim 1, characterized in that: The sealing and cutting knife (20) is mounted on the sealing and cutting knife holder (201), the sealing and cutting knife holder (201) is mounted on the sealing and cutting crossbeam (202), the sealing and cutting crossbeam (202) is connected to the lifting slide (203), the frame (1) is mounted with a vertical guide rail (204), the lifting slide (203) is slidably mounted on the vertical guide rail (204), the frame (1) is mounted with a sealing and cutting power source (23), and the sealing and cutting power source (23) is connected to the lifting slide (203) in a transmission connection.

7. A bag-making machine sealing and cutting device according to claim 6, characterized in that: An output shaft (230) is rotatably mounted on the frame (1). The output shaft (230) is connected to the sealing and cutting power source (23). An eccentric bearing (205) is connected to the output shaft (230). A cylinder (206) is connected to the outer ring of the eccentric bearing (205). The piston rod of the cylinder (206) is connected to the lifting slide (203).

8. A bag-making machine sealing and cutting device according to claim 6, characterized in that: A connecting rod (207) is connected to the sealing and cutting knife holder (201). The connecting rod (207) is mounted on the sealing and cutting crossbeam (202) in a height-reducible manner. A spring (208) is sleeved on the connecting rod (207). The spring (208) is located between the sealing and cutting crossbeam (202) and the sealing and cutting knife holder (201).

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