Slitting counting system and slitting method for packaging bag

Abstract

The invention provides a packaging bag slitting counting system and a slitting method.The packaging bag slitting counting system comprises a rack in butt joint with a bag making machine, the rack is sequentially provided with a guide roller, a pair of conveying rollers, a slitting mechanism and an output mechanism from front to back, and the guide roller is installed at the front end in butt joint with the output end of the bag making machine; the pair of conveying rollers, the slitting mechanism and the output mechanism are located on the same horizontal plane. The slitting mechanism comprises an upper pressing plate and a lower pressing plate, a slitting knife capable of moving up and down is installed at the rear end of the upper pressing plate, a plurality of staggered blowing holes are formed in the opposite faces of the upper pressing plate and the lower pressing plate, and the blowing holes face the rear end and are used for blowing packaging bags. The output mechanism comprises an upper conveying belt and a lower conveying belt. According to the system, in the slitting process, traction on the packaging bag can be kept, a clamping and slitting mode is adopted, slitting is smooth, after slitting, slitting openings of the packaging bag can be blown to the output mechanism, bending is avoided, and the continuous slitting process is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of packaging bag slitting, and in particular to a packaging bag slitting counting system and a slitting method. Background Art

[0002] Plastic packaging bags are plastic products used to package various commodities and goods. They are usually made of plastic materials such as polyethylene (PE), polypropylene (PP) or polyvinyl chloride (PVC). They are lightweight, durable, waterproof and moisture-proof. They are widely used in the packaging of food, daily necessities, cosmetics, pharmaceutical products, clothing, electronic products and industrial products.

[0003] Rolled packaging bags need to be cut into sheets by slitting equipment. During slitting, the current slitting equipment needs to stop the mechanism that pulls the packaging bags at intervals. After slitting, the slit of the packaging bag is not pulled and is only pushed into the output mechanism by the rear section of the packaging bag, which will cause the packaging bag to bend and affect the slitting size. Summary of the invention

[0004] In view of the above problems, the present invention provides a slitting and counting system and slitting method for packaging bags. The system can maintain traction on the packaging bags during the slitting process and adopts a clamping slitting method to ensure smooth slitting. After slitting, the slitting opening of the packaging bags can be blown to the output mechanism without bending, thereby realizing a continuous slitting process.

[0005] To solve the above problems, the technical solution adopted by the present invention is:

[0006] A packaging bag slitting and counting system comprises a frame docked with a bag making machine, the frame is sequentially equipped with a guide roller, a pair of conveying rollers, a slitting mechanism and an output mechanism from front to back, the guide roller is installed at the front end docked with the output end of the bag making machine, and the pair of conveying rollers, the slitting mechanism and the output mechanism are on the same horizontal plane;

[0007] The slitting mechanism comprises an upper pressing plate and a lower pressing plate, a slitting knife which can move up and down is installed at the rear end of the upper pressing plate, and a plurality of staggered blowing holes are arranged on the opposite surfaces of the upper pressing plate and the lower pressing plate, and the blowing holes face the rear end and are used for blowing the packaging bags;

[0008] The output mechanism comprises an upper conveyor belt and a lower conveyor belt, and the opposite surfaces of the upper conveyor belt and the lower conveyor belt are arranged in parallel to form an output channel for clamping the packaging bag and conveying it backward;

[0009] Static elimination bars are installed between the guide roller and a pair of conveying rollers and at the rear end of the output mechanism. The static elimination bar between the guide roller and a pair of conveying rollers is located below the packaging bag, and the static elimination bar at the rear end of the output mechanism is located above the packaging bag.

[0010] Preferably, a first cylinder is installed on the top of the upper pressing plate, the telescopic end of the first cylinder is fixedly connected to the top of the slitting knife, and the top surface of the lower pressing plate is provided with a cutting groove corresponding to the slitting knife.

[0011] Preferably, a controller is installed on the frame, and the controller is electrically connected to the first cylinder and is used to control the number of times the first cylinder is extended and retracted.

[0012] Preferably, a guide wheel is additionally provided at the inner top of the upper conveying belt, so that the upper conveying belt forms a triangle shape, and the front belt is on an inclined surface.

[0013] Preferably, air blowing pipes are installed in the upper pressing plate and the lower pressing plate, and the plurality of air blowing holes are connected to corresponding air blowing pipes, and the air blowing pipes are externally connected to an air pump.

[0014] Preferably, a pair of limiting plates are fixedly mounted at the front ends of the upper pressing plate and the lower pressing plate, the pair of limiting plates are in an open state, and the packaging bag is bent in the open space.

[0015] Preferably, the lower pressing plate is fixedly mounted on a frame, a second cylinder is mounted on the top of the frame, and a telescopic end of the second cylinder is fixedly connected to the upper pressing plate.

[0016] Preferably, a rotating cylinder is installed at the end of each of the two static elimination rods, and the rotating cylinder is installed on a frame. A cleaning mechanism is installed on the frame on the opposite side of the static elimination rod, and the cleaning mechanism includes a cleaning seat connected to the frame and can be raised and lowered. The side wall of the cleaning seat is rotatably connected to multiple cleaning columns, and the outer end of the cleaning column is provided with a cleaning groove, and the circumferential inner wall of the cleaning groove is provided with multiple groups of brushes, and the inner bottom of the cleaning groove is provided with a dust suction pipe.

[0017] Preferably, a fixing plate is fixedly installed on the frame, and a third cylinder that can drive the cleaning seat to rise and fall is installed on the fixing plate. A transmission chamber is provided in the cleaning seat, and the inner end of the cleaning column extends into the transmission chamber and is fixed with a worm gear. A transmission shaft is rotatably connected in the transmission chamber, and a plurality of worms are connected in series on the transmission shaft, and the worms are meshed with corresponding worm gears. A motor that can drive the transmission shaft to rotate is installed at the end of the cleaning seat, and a dust suction channel is provided in the cleaning seat. The dust suction pipe extends into the dust suction channel, and an air suction pipe is connected to the end of the dust suction channel.

[0018] The present invention also provides a packaging bag cutting method, comprising the following steps:

[0019] S1. The packaging bags conveyed by the bag making machine are guided by the guide rollers and then pulled and conveyed by a pair of conveyor rollers;

[0020] S2, the packaging bag is conveyed and pulled between the upper pressing plate and the lower pressing plate, and then conveyed to the output mechanism, and output by clamping the upper conveying belt and the lower conveying belt. The controller controls the first cylinder to extend and retract, driving the slitting knife to move up and down intermittently to complete the slitting of the packaging bag. The number of slitting times is counted by the controller;

[0021] S3. Before slitting, start the second cylinder to drive the upper pressure plate down to clamp the packaging bag to improve the accuracy of slitting. During the clamping and slitting process, a pair of conveying rollers continuously pull and bend and gather in the opening space of a pair of limit plates without intermittent conveying. After one slitting is completed, the cut packaging bag is blown through multiple staggered blowing holes, and the slit of the packaging bag is blown to the output mechanism to realize a continuous slitting process.

[0022] The beneficial effects of the present invention are:

[0023] 1. By installing guide rollers, traction rollers, slitting mechanisms and output mechanisms, the packaging bags transported by the bag making machine are guided by the guide rollers, and then pulled and transported by a pair of conveying rollers. The packaging bags are transported and pulled between the upper pressure plate and the lower pressure plate, and then transported to the output mechanism. They are clamped and output by the upper conveyor belt and the lower conveyor belt. The controller controls the extension and retraction of the first cylinder to drive the slitting knife to move up and down intermittently to complete the slitting of the packaging bags. The number of slitting times is counted by the controller to realize a continuous slitting process.

[0024] 2. By installing an upper pressing plate, a lower pressing plate and multiple blowing holes, before slitting, start the second cylinder to drive the upper pressing plate down to clamp the packaging bag to improve the accuracy of slitting. During the clamping and slitting process, a pair of conveying rollers continuously pull and bend and gather in the opening space of a pair of limit plates without intermittent traction. After slitting, the slit of the packaging bag is blown to the output mechanism without bending, thereby improving the slitting quality and the stability of continuous conveying of the packaging bag.

[0025] 3. By installing two static elimination bars, the packaging bags output by the bag making machine are conveyed through the guide rollers and pass through the static elimination bars below. The ions will neutralize the static electricity on the surface of the packaging bags, thereby achieving the purpose of eliminating static electricity and avoiding bending caused by adhesion to the board surface during the slitting process. After slitting, the bags are output through the output mechanism and pass through the static elimination bars at the rear end to eliminate static electricity again, avoiding adhesion of the subsequent stacked packaging bags.

[0026] 4. By installing the cleaning mechanism, when the static elimination rod makes an abnormal sound or needs maintenance, the rotating cylinder can be started to drive the static elimination rod to rotate 180°, so that multiple cleaning columns correspond to multiple electrode needles one by one, and the third cylinder is started to drive the cleaning seat to move, so that the electrode needle is inserted into the corresponding cleaning groove, and the motor is started to drive the multiple worms to rotate through the transmission shaft, and then the cleaning column is driven to rotate through the worm gear, thereby driving the exhaust brush to continuously clean the surface of the electrode needle, and sweeping off the dust and other impurities adhering to the surface, and at the same time, the gas in the dust suction channel is sucked through the suction pipe, and then the swept dust is absorbed through multiple dust suction pipes to realize the automatic maintenance process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present invention;

[0028] Figure 2 It is a cross-sectional schematic diagram of the slitting mechanism proposed by the present invention;

[0029] Figure 3 A cross-sectional schematic diagram of the cleaning mechanism proposed by the present invention;

[0030] Figure 4 A schematic top view of the cleaning mechanism proposed by the present invention;

[0031] Figure 5 This is a top view cross-sectional schematic diagram of the transmission cavity proposed by the present invention.

[0032] In the figure: 1 frame, 2 lower conveyor belt, 3 upper conveyor belt, 4 upper pressure plate, 5 lower pressure plate, 6 second cylinder, 7 first cylinder, 8 limit plate, 9 conveyor roller, 10 guide roller, 11 static elimination rod, 12 cleaning mechanism, 13 rotating cylinder, 14 cutting groove, 15 blowing pipe, 16 blowing hole, 17 slitting knife, 18 cleaning column, 19 cleaning groove, 20 row brush, 21 dust suction pipe, 22 transmission chamber, 23 worm gear, 24 transmission shaft, 25 worm, 26 cleaning seat, 27 dust suction channel, 28 fixed plate, 29 third cylinder, 30 motor, 31 suction pipe. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0035] Reference Figure 1-5 A packaging bag slitting and counting system comprises a frame 1 connected to a bag making machine, wherein the frame 1 is provided with a guide roller 10, a pair of conveying rollers 9, a slitting mechanism and an output mechanism in sequence from front to back, wherein the guide roller 10 is provided at the front end connected to the output end of the bag making machine, wherein the pair of conveying rollers 9, the slitting mechanism and the output mechanism are on the same horizontal plane, and the packaging bag conveyed by the bag making machine is guided by the guide roller 10 and then pulled and conveyed by the pair of conveying rollers 9, and the packaging bag is pulled and conveyed between an upper pressing plate 4 and a lower pressing plate 5, and then conveyed to the output mechanism, and is clamped and output by an upper conveying belt 3 and a lower conveying belt 2.

[0036] The slitting mechanism includes an upper pressing plate 4 and a lower pressing plate 5. A slitting knife 17 that can move up and down is installed at the rear end of the upper pressing plate 4. The lower pressing plate 5 is fixedly installed on the frame 1. A second cylinder 6 is installed on the top of the frame 1. The telescopic end of the second cylinder 6 is fixedly connected to the upper pressing plate 4. A first cylinder 7 is installed on the top of the upper pressing plate 4. The telescopic end of the first cylinder 7 is fixedly connected to the top of the slitting knife 17. A cutting groove 14 corresponding to the slitting knife 17 is provided on the top surface of the lower pressing plate 5. A controller is installed on the frame 1. The controller is electrically connected to the first cylinder 7 for controlling the number of telescopic times of the first cylinder 7. Before slitting, the second cylinder 6 is started first to drive the upper pressing plate 4 to descend, clamp the packaging bag, and improve the accuracy of slitting.

[0037] The opposite surfaces of the upper pressing plate 4 and the lower pressing plate 5 are provided with a plurality of staggered blowing holes 16, and the blowing holes 16 face the rear end and are used for blowing the packaging bags. Blowing pipes 15 are installed in the upper pressing plate 4 and the lower pressing plate 5, and the plurality of blowing holes 16 are connected to the corresponding blowing pipes 15. The blowing pipes 15 are externally connected to an air pump. During the clamping and slitting process, a pair of conveying rollers 9 continuously pull and bend and gather in the opening space of a pair of limiting plates 8 without intermittent traction. After slitting, the slit mouth of the packaging bag is blown to the output mechanism without bending, thereby improving the slitting quality and the stability of continuous conveying of the packaging bag.

[0038] The output mechanism includes an upper conveyor belt 3 and a lower conveyor belt 2. The opposite surfaces of the upper conveyor belt 3 and the lower conveyor belt 2 are arranged in parallel to form an output channel for clamping the packaging bag and conveying it backward. A guide wheel is added to the inner top of the upper conveyor belt 3 to make the upper conveyor belt 3 form a triangle shape. The front belt is on an inclined surface, and the inclined surface is used to increase the contact area with the incision of the packaging bag.

[0039] Furthermore, a pair of limiting plates 8 are fixedly installed at the front end of the upper pressing plate 4 and the lower pressing plate 5. The pair of limiting plates 8 are in an open state, and the packaging bag is bent in the open space. During the clamping and cutting process, a pair of conveying rollers 9 continuously pull, and the packaging bag is bent and gathered in the open space of the pair of limiting plates 8 without intermittent traction.

[0040] Anti-static rods 11 are installed between the guide roller 10 and a pair of conveying rollers 9 and at the rear end of the output mechanism. The anti-static rod 11 between the guide roller 10 and the pair of conveying rollers 9 is located below the packaging bag, and the anti-static rod 11 at the rear end of the output mechanism is located above the packaging bag. The packaging bag output by the bag making machine is transported through the guide roller 10 and passes through the anti-static rod 11 below. The ions will be neutralized with the electrostatic charge on the surface of the packaging bag, thereby achieving the purpose of eliminating static electricity and avoiding bending caused by adhesion to the plate surface during the process of passing through the slitting mechanism. After slitting, it is output through the output mechanism and passes through the anti-static rod 11 at the rear end to eliminate static electricity again, thereby avoiding adhesion of subsequent stacked packaging bags.

[0041] Furthermore, the ends of the two static elimination rods 11 are both equipped with a rotating cylinder 13, and the rotating cylinder 13 is installed on the frame 1. The frame 1 on the opposite side of the static elimination rod 11 is equipped with a cleaning mechanism 12, and the cleaning mechanism includes a cleaning seat 26 connected to the frame 1 and can be raised and lowered. The side wall of the cleaning seat 26 is rotatably connected to multiple cleaning columns 18, and the outer end of the cleaning column 18 is provided with a cleaning groove 19, and the circumferential inner wall of the cleaning groove 19 is equipped with multiple groups of row brushes 20, and the inner bottom of the cleaning groove 19 is provided with a dust suction pipe 21. A fixed plate 28 is fixedly installed on the frame 1, and a A third cylinder 29 can drive the cleaning seat 26 to rise and fall. A transmission chamber 22 is provided in the cleaning seat 26. The inner end of the cleaning column 18 extends into the transmission chamber 22 and is fixed with a worm gear 23. A transmission shaft 24 is rotatably connected in the transmission chamber 22. A plurality of worms 25 are connected in series on the transmission shaft 24. The worms 25 mesh with the corresponding worm gears 23. A motor 30 that can drive the transmission shaft 24 to rotate is installed at the end of the cleaning seat 26. A dust suction channel 27 is provided in the cleaning seat 26. The dust suction pipe 21 extends into the dust suction channel 27. The end of the dust suction channel 27 is connected with an air suction pipe 31 to realize an automatic maintenance process.

[0042] The packaging bag transported by the bag making machine is guided by the guide roller 10, and then pulled and transported by a pair of conveying rollers 9. The packaging bag is transported and pulled between the upper pressing plate 4 and the lower pressing plate 5, and then transported to the output mechanism. It is clamped and output by the upper conveying belt 3 and the lower conveying belt 2. The controller controls the extension and retraction of the first cylinder 7 to drive the slitting knife 17 to move up and down intermittently to complete the slitting of the packaging bag. The number of slitting times is counted by the controller to realize a continuous slitting process.

[0043] Before slitting, the second cylinder 6 is started to drive the upper pressure plate 4 to descend, clamp the packaging bag, and improve the accuracy of slitting. During the clamping and slitting process, a pair of conveying rollers 9 continuously pull, bend and gather in the opening space of a pair of limiting plates 8, and no intermittent traction is required. After slitting, the slit of the packaging bag is blown to the output mechanism without bending, thereby improving the slitting quality and the stability of continuous conveying of the packaging bag.

[0044] The packaging bags output by the bag making machine are transported by the guide roller 10 and pass through the static electricity elimination rod 11 below. The ions will neutralize the static electricity charge on the surface of the packaging bags, thereby achieving the purpose of eliminating static electricity and avoiding adhesion to the plate surface and bending during the process of passing through the slitting mechanism. After slitting, they are output through the output mechanism and pass through the static electricity elimination rod 11 at the rear end to eliminate static electricity again, avoiding adhesion of the subsequently stacked packaging bags.

[0045] When the static elimination rod 11 makes an abnormal sound or needs maintenance, the rotating cylinder 13 can be started to drive the static elimination rod 11 to rotate 180°, so that the multiple cleaning columns 18 correspond to the multiple electrode needles one by one, and the third cylinder 29 is started to drive the cleaning seat 26 to move, so that the electrode needle is inserted into the corresponding cleaning groove 19, and the motor 30 is started to drive the multiple worms 25 to rotate through the transmission shaft 24, and then the cleaning column 18 is driven to rotate through the worm gear 23, thereby driving the brush 20 to continuously clean the surface of the electrode needle, and sweep away the dust and other impurities adhered to the surface. At the same time, the gas in the dust suction channel 27 is sucked through the suction pipe 31, and then the swept dust is absorbed through the multiple dust suction pipes 21, realizing the automatic maintenance process.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A packaging bag cutting and counting system, comprising a frame (1) connected to a bag making machine, characterized in that: The frame (1) is provided with a guide roller (10), a pair of conveying rollers (9), a slitting mechanism and an output mechanism in sequence from front to back, wherein the guide roller (10) is installed at the front end connected to the output end of the bag making machine, and the pair of conveying rollers (9), the slitting mechanism and the output mechanism are on the same horizontal plane; The slitting mechanism comprises an upper pressing plate (4) and a lower pressing plate (5), the rear end of the upper pressing plate (4) is provided with a slitting knife (17) which can move up and down, and the opposite surfaces of the upper pressing plate (4) and the lower pressing plate (5) are provided with a plurality of staggered blowing holes (16), the blowing holes (16) are facing the rear end and are used for blowing the packaging bags; The output mechanism comprises an upper conveying belt (3) and a lower conveying belt (2), wherein the opposite surfaces of the upper conveying belt (3) and the lower conveying belt (2) are arranged in parallel to form an output channel for clamping the packaging bag and transporting it backwards; A static elimination bar (11) is installed between the guide roller (10) and the pair of conveying rollers (9) and at the rear end of the output mechanism. The static elimination bar (11) between the guide roller (10) and the pair of conveying rollers (9) is located below the packaging bag, and the static elimination bar (11) at the rear end of the output mechanism is located above the packaging bag.

2. A packaging bag cutting and counting system according to claim 1, characterized in that: A first cylinder (7) is installed on the top of the upper pressing plate (4), and the telescopic end of the first cylinder (7) is fixedly connected to the top of the slitting knife (17). The top surface of the lower pressing plate (5) is provided with a cutting groove (14) corresponding to the slitting knife (17).

3. A packaging bag cutting and counting system according to claim 1, characterized in that: A controller is installed on the frame (1), and the controller is electrically connected to the first cylinder (7) and is used to control the number of times the first cylinder (7) extends and retracts.

4. A packaging bag cutting and counting system according to claim 1, characterized in that: A guide wheel is added to the inner top of the upper conveying belt (3), so that the upper conveying belt (3) forms a triangle shape, and the front belt is on an inclined surface.

5. A packaging bag cutting and counting system according to claim 1, characterized in that: The upper pressing plate (4) and the lower pressing plate (5) are both provided with air blowing pipes (15), the plurality of air blowing holes (16) are all connected to corresponding air blowing pipes (15), and the air blowing pipes (15) are externally connected to an air pump.

6. A packaging bag cutting and counting system according to claim 1, characterized in that: A pair of limiting plates (8) are fixedly mounted at the front ends of the upper pressing plate (4) and the lower pressing plate (5); the pair of limiting plates (8) are in an open state, and the packaging bag is bent in the open space.

7. A packaging bag cutting and counting system according to claim 1, characterized in that: The lower pressing plate (5) is fixedly mounted on the frame (1), a second cylinder (6) is mounted on the top of the frame (1), and the telescopic end of the second cylinder (6) is fixedly connected to the upper pressing plate (4).

8. The packaging bag cutting and counting system according to claim 1, characterized in that: The ends of the two static elimination bars (11) are both provided with a rotating cylinder (13), the rotating cylinder (13) being installed on a frame (1), the frame (1) on the opposite side of the static elimination bars (11) being provided with a cleaning mechanism (12), the cleaning mechanism comprising a cleaning seat (26) connected to the frame (1) and capable of being raised and lowered, the side wall of the cleaning seat (26) being rotatably connected to a plurality of cleaning columns (18), the outer end of the cleaning column (18) being provided with a cleaning groove (19), the circumferential inner wall of the cleaning groove (19) being provided with a plurality of groups of brushes (20), and the inner bottom of the cleaning groove (19) being provided with a dust suction pipe (21).

9. A packaging bag cutting and counting system according to claim 8, characterized in that: A fixing plate (28) is fixedly mounted on the frame (1), and a third cylinder (29) is mounted on the fixing plate (28) for driving the cleaning seat (26) to move up and down. A transmission chamber (22) is arranged in the cleaning seat (26), and the inner side end of the cleaning column (18) extends into the transmission chamber (22) and is fixed with a worm gear (23). A transmission shaft (24) is rotatably connected in the transmission chamber (22), and a plurality of worms (25) are serially connected to the transmission shaft (24), and the worms (25) are meshed with corresponding worm gears (23). A motor (30) for driving the transmission shaft (24) to rotate is mounted at the end of the cleaning seat (26), and a dust suction channel (27) is arranged in the cleaning seat (26), and the dust suction pipe (21) extends into the dust suction channel (27), and an air suction pipe (31) is connected to the end of the dust suction channel (27).

10. A slitting method based on a slitting and counting system for packaging bags according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, the packaging bag conveyed by the bag making machine is guided by a guide roller (10) and then pulled and conveyed by a pair of conveying rollers (9); S2, the packaging bag is transported and pulled between the upper pressing plate (4) and the lower pressing plate (5), and then transported to the output mechanism, and output by clamping the upper conveying belt (3) and the lower conveying belt (2). The controller controls the first cylinder (7) to extend and retract, driving the slitting knife (17) to move up and down intermittently, completing the slitting of the packaging bag, and the number of slitting times is counted by the controller; S3. Before cutting, the second cylinder (6) is started to drive the upper pressure plate (4) to descend, clamp the packaging bag, and improve the accuracy of cutting. During the clamping and cutting process, a pair of conveying rollers (9) continuously pull, bend and gather in the opening space of a pair of limit plates (8), and no intermittent conveying is required. After one cutting is completed, the cut packaging bag is blown through multiple staggered blowing holes (16), and the cutting mouth of the packaging bag is blown to the output mechanism, thereby realizing a continuous cutting process.

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