Rapid bag making machine

Abstract

According to the rapid bag making machine, the cooling cutter and the hot cutter move synchronously, so that heat radiation of the hot cutter to equipment is reduced, meanwhile, the pressing claw device is arranged to be used for pressing the tail end of a film bag, and the problem that the bag needs to be tied through a needle hole is solved. A rapid bag making machine comprises a rack; the feeding device comprises an upper rubber roller and a lower rubber roller which are arranged in parallel, and the two ends of the upper rubber roller and the two ends of the lower rubber roller are rotationally connected to the rack; the hot shearing device comprises a hot cutter and a supporting roller, the hot cutter is arranged above the supporting roller, and the hot cutter reciprocates towards the supporting roller so as to shear off the film bag. According to the rapid bag making machine, the cooling cutter and the hot cutter move synchronously, so that heat radiation of the hot cutter to equipment is reduced, meanwhile, the pressing claw device is arranged to be used for pressing the tail end of a film bag, and the problem that the bag needs to be tied through a needle hole is solved.

Description

Technical Field

[0001] This utility model relates to the field of film bag manufacturing, specifically to a high-speed bag making machine. Background Technology

[0002] The fully automatic bag making machine uses a servo motor to drive the feeding and control the bag length, and a frequency converter motor to drive the heating and cutting blade to cut the bag up and down. A silicone rubber roller is installed under the heat-sealing and cutting blade. The heat-sealing and cutting blade heat-seals and cuts the fed film roll material to form the bag. Due to the action of the heat-cutting blade, the support roller (rubber roller) is often damaged. At the same time, it is easy to cause heat radiation damage to the feeding device behind the cut plastic film, which affects the product quality and the life of the equipment.

[0003] Furthermore, current high-speed bag making machines typically have a bag-pressing device. During operation, due to the uniform and synchronous rotation of the hot cutting blade and the chain, the tail of the film bag often sticks up when the bag-pressing device is pressing it down, which can easily cause interference with subsequent products. Therefore, it is usually necessary to install hot and cold needles on the bag-pressing device to prick and pierce the tail of the bag, thereby ensuring that the bags can be effectively stacked without the tail sticking up. This results in each bag having a piercing hole, because some bags cannot be pricked and would be damaged. As a result, high-speed bag making machines cannot be used to produce such bags.

[0004] Therefore, an improvement is needed for high-speed bag making machines. Utility Model Content

[0005] This invention provides a high-speed bag making machine. By setting the cooling blade and the hot cutting blade to move synchronously, the heat radiation from the hot cutting blade to the equipment is reduced. At the same time, a pressure claw device is set to press down the tail end of the film bag, avoiding the need to puncture the bag with a needle.

[0006] This utility model is achieved through the following technical solution:

[0007] A high-speed bag making machine, comprising,

[0008] frame;

[0009] A feeding device, comprising an upper glue roller and a lower glue roller arranged in parallel, with both ends of the upper glue roller and the lower glue roller rotatably connected to the frame;

[0010] A hot shearing device, comprising a hot cutting blade and a support roller, wherein the hot cutting blade is disposed above the support roller and reciprocates toward the support roller to cut the film bag;

[0011] A bag pressing device, comprising a pressure plate and a support plate, wherein the pressure plate reciprocates toward the support plate to press down the finished film bag;

[0012] The feeding device, the hot shearing device, and the bag pressing device are arranged sequentially on the frame in the direction of film bag transport. A cooling blade is also provided between the feeding device and the hot shearing device, and the cooling blade moves up and down synchronously with the hot shearing blade.

[0013] Furthermore, the drive motor A on the frame is connected to the pulley A on the main shaft via a synchronous belt drive. The inner rings of the eccentric wheel A are fixedly connected to both ends of the main shaft, and the outer ring of the eccentric wheel A is hinged and fixed to the lower end of the drive rod A. The drive rod A is threaded into the linear bearing on the frame, and the upper end of the drive rod A is fixed to the end of the hot cutting blade. One end of the support roller is driven and connected to the drive motor C.

[0014] Furthermore, the pressure plate is fixedly connected at both ends to the upper ends of the drive rods B, and the drive rods B are threaded into the linear bearings on the frame. One end of the connecting rod A is hinged and fixed to the lower end of the drive rod B, and the other end of the connecting rod A is hinged and fixed to one end of the connecting rod B. The other end of the connecting rod B is fixedly connected to the drive shaft B, and the drive shaft B is rotatably connected to the frame. An eccentric wheel B is provided on the main shaft. The inner ring of the eccentric wheel B is fixedly connected to the main shaft, and the outer ring is connected to the connecting rod B through the connecting rod C, thereby driving the drive rod B to move up and down.

[0015] Furthermore, the pressure plate includes a bottom pressure plate and a top pressure plate. Multiple connecting rods are fixedly connected to the upper end of the bottom pressure plate. Multiple through holes A are provided on the top pressure plate. The free ends of the connecting rods pass through the through holes A and are fixedly connected. A compression spring A is sleeved on the connecting rod. The two ends of the compression spring A press against the bottom pressure plate and the top pressure plate respectively. A drive rod C is fixedly connected to both ends of the top pressure plate respectively.

[0016] Furthermore, the cooling blade is provided with water holes arranged in the extension direction, and the water holes are connected to circulating water. An eccentric wheel C is also installed on the main shaft. The inner ring of the eccentric wheel C is fixedly connected to the main shaft, and the outer ring is fixed to one end of the connecting rod D. The other end of the connecting rod D is hinged and fixed to one end of the connecting rod E. The other end of the connecting rod E is fixedly connected to the drive shaft C. The drive shaft C is rotatably connected to the frame. The two ends of the drive shaft C are respectively hinged and fixedly connected to the linkage mechanism C, so that the cooling blade and the hot cutting blade move synchronously through the linkage mechanism C.

[0017] Furthermore, the linkage mechanism C includes a connecting rod F and a driving rod C. One end of the connecting rod F is fixedly connected to the driving shaft C, and the other end is hinged and fixedly connected to the lower end of the driving rod C. The driving rod C is threaded into a linear bearing on the frame, and the upper end of the driving rod C is fixedly connected to the end of the cooling blade.

[0018] Furthermore, one end of the lower glue roller is connected to the drive motor D. The upper and lower glue rollers are each provided with multiple annular grooves along their length. An upper air inlet pipe and a lower air inlet pipe are respectively arranged axially parallel behind the upper and lower glue rollers. The upper and lower air inlet pipes are fixedly connected to the frame. The upper air inlet pipe is provided with multiple air blowing pipes A along its length, and the lower air inlet pipe is provided with multiple air blowing pipes B along its length. The air outlet of the air blowing pipe A passes through the annular groove on the upper glue roller, and the air outlet of the air blowing pipe B passes through the annular groove on the lower glue roller.

[0019] Furthermore, a transition plate is also fixed on the frame, with one side of the transition plate located at the end of the air blowing pipe B and the other side extending to the upper cut surface of the support roller.

[0020] Furthermore, a bag-pulling mechanism is provided between the hot shearing device and the bag-pressing device. The bag-pulling mechanism includes a rotary chain, a first rotating shaft, a second rotating shaft, and levers. The first rotating shaft and the second rotating shaft are rotatably connected to the frame. The first rotating shaft is located above the support plate, and the second rotating shaft is located below the support plate. Sprockets are provided on the first rotating shaft and the second rotating shaft. The rotary chain meshes with the sprockets for transmission. There are two rotary chains, and multiple levers are evenly distributed and fixedly connected between the two rotary chains. There is a pressure claw shaft on the frame. The pressure claw shaft is located between the first rotating shaft and the second rotating shaft. Pressure claws are evenly distributed on the pressure claw shaft for pressing the tail end of the film bag on the support plate.

[0021] Furthermore, a pulley B is rotatably connected to the second rotating shaft. The pulley B is driven to the output end of the drive motor B. A limiting ring is installed on the outer side of the pulley B. The limiting ring is fixedly connected to the second rotating shaft. Multiple through holes B are provided on the inner side of the limiting ring. A compression spring is installed in the through hole B. A steel ball is provided between the compression spring and the pulley B. Multiple hemispherical grooves A are provided along the circumference on the outer side of the pulley B. The steel ball is disposed in the hemispherical grooves A. An eccentric shaft is fixedly connected to the outer side of the limiting ring. A fixing block is rotatably connected to the eccentric shaft. The fixing block is connected to the guide rod of the cylinder D. The tail of the cylinder D is rotatably connected to one end of the connecting plate. The other end of the connecting plate is fixedly connected to the pressure claw shaft. A positioning block is fixedly connected to the second rotating shaft. A proximity switch for detecting the positioning block is fixedly connected to the frame.

[0022] Furthermore, the connecting rod C is a cylinder.

[0023] The beneficial effects of this utility model are as follows:

[0024] 1. Using a single drive motor A to control the operation of the cooling knife, shearing device, and bag pressing device via eccentric wheels A, B, and C on the same main shaft effectively reduces the number of drive motors used in the high-speed bag making machine, making the overall equipment more streamlined and reducing manufacturing and maintenance costs.

[0025] Second, a cooling blade was installed between the hot shearing device and the feeding device. By setting the cooling blade to move synchronously with the hot shearing blade, the contact point between the hot shearing blade and the support roller can be cooled quickly, and the plastic film after hot cutting is cooled down quickly. At the same time, the heat radiation from the hot shearing blade to the feeding device is avoided, thus improving the service life of the equipment.

[0026] Third, by setting up a coaxially driven bag-pulling mechanism and a pressure claw device, the bag-pulling mechanism is used to pry open the cut plastic film, and the bag-pressing device is used to press down the film bag. In order to prevent the tail of the film bag from sticking up and affecting subsequent work, the pressure claw device is used to press down the tail of the film bag. Since the two devices are driven coaxially and operate simultaneously, the use of the drive source is reduced, the equipment is simplified, and the stability of operation is guaranteed.

[0027] Fourth, by setting a limiting ring, a compression spring and a steel ball are set on the contact surface between the limiting ring and the pulley B as a torque limiting device. When the lever bag is overloaded, the steel ball disengages from the hemispherical groove A, so that the pulley B cannot drive the drive device to rotate, thereby ensuring production safety.

[0028] 5. Using cylinder D as a connecting part, as the number of film bags pressed by the pressure claw gradually increases, it can adapt and stretch to act as a buffer. At the same time, when the number of film bags reaches a certain number, the front-end machine needs to clamp the film bags as a whole. Cylinder D can control the pressure claw to retract so that the pressure claw releases the film bags, thereby ensuring the smooth progress of production. Attached Figure Description

[0029] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0030] Figure 1 This is a schematic diagram of the internal structure of this utility model.

[0031] Figure 2 This is a front view structural diagram of the present invention.

[0032] Figure 3 This is a schematic diagram of the right side of the bag-making machine.

[0033] Figure 4 This is a schematic diagram of the feeding device.

[0034] Figure 5 Schematic diagram of the cooling blade structure.

[0035] Figure 6 This is a schematic cross-sectional view of the pulley at point B.

[0036] Figure 7 This is a schematic diagram of the left side of the bag-making machine.

[0037] Figure 8 This is a schematic diagram of the structure at the pressure plate.

[0038] Figure 9 This is a schematic diagram of the lever mechanism. Detailed Implementation

[0039] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0040] like Figure 1-9 As shown, a high-speed bag making machine includes,

[0041] Rack 10;

[0042] The feeding device 20 includes an upper glue roller 201 and a lower glue roller 202 arranged in parallel. The two ends of the upper glue roller 201 and the lower glue roller 202 are rotatably connected to the frame 10.

[0043] A hot shearing device 30 includes a hot cutting blade 301 and a support roller 302. The hot cutting blade 301 is disposed above the support roller 302. The hot cutting blade 301 reciprocates toward the support roller 302 to cut the film bag.

[0044] The bag pressing device 40 includes a pressing plate 401 and a support plate 402. The pressing plate 401 reciprocates toward the support plate 402 to press the finished film bag.

[0045] The feeding device 20, the hot shearing device 30, and the bag pressing device 40 are arranged sequentially on the frame 10 in the direction of film bag transport. A cooling blade 50 is also provided between the feeding device 20 and the hot shearing device 30. The cooling blade 50 and the hot shearing blade 301 move up and down synchronously.

[0046] By moving the hot cutting blade 301 and the cooling blade 50 synchronously, the temperature can be quickly reduced, minimizing the damage caused by the hot cutting blade 301 to the equipment.

[0047] Furthermore, the drive motor A101 on the frame 10 is connected to the pulley A1054 on the main shaft 105 via a synchronous belt drive. The inner rings of the eccentric wheel A1051 are fixedly connected to both ends of the main shaft 105, and the outer ring of the eccentric wheel A1051 is hinged and fixed to the lower end of the drive rod A10511. The rod of the drive rod A10511 is inserted into the linear bearing on the frame 10, and the upper end of the drive rod A10511 is fixed to the end of the hot cutting blade 301. One end of the support roller 302 is drivenly connected to the drive motor C103.

[0048] Furthermore, the pressure plate 401 is fixedly connected at both ends to the upper ends of the drive rods B4013, which are respectively fixedly connected. The drive rods B4013 are threaded into the linear bearings on the frame 10. One end of the connecting rod A40131 is hinged and fixed to the lower end of the drive rod B4013. The other end of the connecting rod A40131 is hinged and fixed to one end of the connecting rod B40132. The other end of the connecting rod B40132 is fixedly connected to the drive shaft B106. The drive shaft B106 is rotatably connected to the frame 10. An eccentric wheel B1052 is provided on the main shaft 105. The inner ring of the eccentric wheel B1052 is fixedly connected to the main shaft 105, and the outer ring is connected to the connecting rod B40132 through the connecting rod C40133, thereby driving the drive rod B4013 to move up and down.

[0049] Furthermore, the pressure plate 401 includes a bottom pressure plate 4011 and a top pressure plate 4012. Multiple connecting rods 40111 are fixedly connected to the upper end of the bottom pressure plate 4011. Multiple through holes A40121 are provided on the top pressure plate 4012. The free ends of the connecting rods 40111 pass through the through holes A40121 and are then fixedly connected. A compression spring A40112 is sleeved on each connecting rod 40111. The two ends of the compression spring A40112 respectively press against the bottom pressure plate 4011 and the top pressure plate 4012. A drive rod B4013 is fixedly connected to both ends of the top pressure plate 4012. By providing the compression spring A40122, damage to the film bag by the bag-pressing device can be avoided.

[0050] Furthermore, the cooling blade 50 is provided with a water hole 501 arranged in the extension direction, and the water hole 501 is connected to circulating water. An eccentric wheel C1053 is also installed on the main shaft 105. The inner ring of the eccentric wheel C1053 is fixedly connected to the main shaft 105, and the outer ring is fixed to one end of the connecting rod D1071. The other end of the connecting rod D1071 is hinged and fixed to one end of the connecting rod E1072. The other end of the connecting rod E1072 is fixedly connected to the drive shaft C107. The drive shaft C107 is rotatably connected to the frame 10. Both ends of the drive shaft C107 are respectively hinged and fixedly connected to the linkage mechanism C, so that the cooling blade 50 and the hot cutting blade 301 move synchronously through the linkage mechanism C.

[0051] Furthermore, the linkage mechanism C includes a connecting rod F1073 and a driving rod C1074. One end of the connecting rod F1073 is fixedly connected to the driving shaft C107, and the other end is hinged and fixedly connected to the lower end of the driving rod C1074. The driving rod C1074 is inserted into a linear bearing on the frame 10, and the upper end of the driving rod C1074 is fixedly connected to the end of the cooling blade 50.

[0052] Furthermore, one end of the lower glue roller 202 is connected to the drive motor D104. The upper glue roller 201 and the lower glue roller 202 are respectively provided with multiple annular grooves 203 along the length direction. An upper air inlet pipe 204 and a lower air inlet pipe 205 are respectively arranged axially parallel behind the upper glue roller 201 and the lower glue roller 202. The upper air inlet pipe 204 and the lower air inlet pipe 205 are fixedly connected to the frame 10. The upper air inlet pipe 204 is provided with multiple air blowing pipes A2041 along the length direction, and the lower air inlet pipe 205 is provided with multiple air blowing pipes B2051 along the length direction. The air outlet of the air blowing pipe A2041 passes through the annular groove 203 on the upper glue roller 201, and the air outlet of the air blowing pipe B2051 passes through the annular groove 203 on the lower glue roller 202.

[0053] Furthermore, a transition plate 108 is also fixed on the frame 10. One side of the transition plate 108 is located at the end of the air blowing pipe B2051, and the other side extends to the upper cut surface of the support roller 302.

[0054] Furthermore, a bag-pulling mechanism 60 is also provided between the hot shearing device 30 and the bag-pressing device 40. The bag-pulling mechanism 60 includes a rotary chain 601, a first rotating shaft 602, a second rotating shaft 603, and a lever 604. The first rotating shaft 602 and the second rotating shaft 603 are rotatably connected to the frame 10. The first rotating shaft 602 is located above the support plate 402, and the second rotating shaft 603 is located below the support plate 402. A sprocket is mounted on the second rotating shaft 603, and the rotating chain 601 meshes with the sprocket for transmission. Two rotating chains 601 are provided, and multiple levers 604 are evenly distributed and fixedly connected between the two chains. A pressure claw shaft 701 is mounted on the frame 10, positioned between the first rotating shaft 602 and the second rotating shaft 603. Pressure claws 7011 are evenly distributed on the pressure claw shaft 701, used to press down the tail end of the film bag on the support plate 402. The distance between two adjacent levers 604 is equal to the circumference of the sprocket, ensuring that one lever actuates for every one revolution of the sprocket. A proximity switch detects the positioning block, thereby controlling the running time of the drive motor A to provide time for the next film bag to be delivered.

[0055] Furthermore, a pulley B1021 is rotatably connected to the second rotating shaft 603. The pulley B1021 is drively connected to the output end of the drive motor B102. A limiting ring 6031 is installed on the outer side of the pulley B1021. The limiting ring 6031 is fixedly connected to the second rotating shaft 603. Multiple through holes B60311 are provided on the inner side of the limiting ring 6031. Compression springs 60312 are installed in the through holes B60311. A steel ball 60 is provided between the compression spring 60312 and the pulley B1021. 313, the outer side of the pulley B1021 is provided with a plurality of hemispherical grooves A10211 along the circumference, the steel ball is disposed in the hemispherical grooves A10211, the outer side of the limiting ring 6031 is fixedly connected to an eccentric shaft 60314, the eccentric shaft 60314 is rotatably connected to a fixing block 6033, the fixing block 6033 is connected to the guide rod of the cylinder D6034, the tail of the cylinder D6034 is rotatably connected to one end of the connecting plate 6035, the other end of the connecting plate 6035 is fixedly connected to the pressure claw shaft 701, a positioning block 6036 is fixedly connected to the second rotating shaft 603, and a proximity switch for detecting the positioning block 6036 is fixedly connected to the frame 10. By setting a proximity switch detection positioning block 6036, the rotation position of the second rotating shaft 603 can be more clearly determined. At the same time, the use of a limiting ring 6031 in conjunction with a compression spring 60312 and a steel ball 60313 as a torque limiting device can automatically disengage when the lever gets tangled, thus ensuring normal production. Meanwhile, the cylinder D6034 can increase the number of film bags pressed by the pressure claw 7011, creating a buffering effect. In addition, when the film bags are removed by the subsequent worktable, the pressure claw can be released without driving the motor B, thus avoiding disruption to the workflow.

[0056] Furthermore, the connecting rod C40133 is a cylinder. This configuration allows the bag-pressing device to open without requiring the drive shaft to rotate.

[0057] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rapid bag-making machine, characterized in that, include, Rack (10); The feeding device (20) includes an upper glue roller (201) and a lower glue roller (202) arranged in parallel. The two ends of the upper glue roller (201) and the lower glue roller (202) are rotatably connected to the frame (10). A hot shearing device (30) includes a hot cutter (301) and a support roller (302). The hot cutter (301) is disposed above the support roller (302). The hot cutter (301) reciprocates toward the support roller (302) to cut the film bag. The bag pressing device (40) includes a pressure plate (401) and a support plate (402). The pressure plate (401) reciprocates toward the support plate (402) to press the finished film bag. The feeding device (20), the hot shearing device (30) and the bag pressing device (40) are arranged sequentially on the frame (10) in the direction of film bag transport. A cooling blade (50) is also provided between the feeding device (20) and the hot shearing device (30), and the cooling blade (50) moves up and down synchronously with the hot cutting blade (301).

2. The rapid bag-making machine according to claim 1, characterized in that, The drive motor A (101) on the frame (10) is connected to the pulley A (1054) on the main shaft (105) via a synchronous belt drive. The inner rings of the eccentric wheel A (1051) are fixedly connected to both ends of the main shaft (105). The outer ring of the eccentric wheel A (1051) is hinged and fixed to the lower end of the drive rod A (10511). The rod of the drive rod A (10511) is inserted into the linear bearing on the frame (10). The upper end of the drive rod A (10511) is fixed to the end of the hot cutting knife (301). One end of the support roller (302) is connected to the drive motor C (103).

3. A rapid bag-making machine according to claim 2, characterized in that, The pressure plate (401) is fixedly connected at both ends to the upper ends of the drive rods B (4013). The drive rods B (4013) are threaded into the linear bearings on the frame (10). The lower end of the drive rods B (4013) is hinged to one end of the connecting rod A (40131). The other end of the connecting rod A (40131) is hinged to one end of the connecting rod B (40132). The other end of the connecting rod B (40132) is fixedly connected to the drive shaft B (106). The drive shaft B (106) is rotatably connected to the frame (10). An eccentric wheel B (1052) is provided on the main shaft (105). The inner ring of the eccentric wheel B (1052) is fixedly connected to the main shaft (105), and the outer ring is connected to the connecting rod B (40132) through the connecting rod C (40133), thereby driving the drive rod B (4013) to move up and down.

4. A rapid bag-making machine according to claim 3, characterized in that, The pressure plate (401) includes a bottom pressure plate (4011) and a top pressure plate (4012). Multiple connecting rods (40111) are fixedly connected to the upper end of the bottom pressure plate (4011). Multiple through holes A (40121) are provided on the top pressure plate (4012). The free end of the connecting rod (40111) passes through the through hole A (40121) and is fixedly connected. A compression spring A (40112) is sleeved on the connecting rod (40111). The two ends of the compression spring A (40112) are respectively pressed against the bottom pressure plate (4011) and the top pressure plate (4012). The two ends of the top pressure plate (4012) are respectively fixedly connected to the drive rod B (4013).

5. A rapid bag-making machine according to claim 2 or 4, characterized in that, The cooling blade (50) is provided with a water hole (501) arranged in the extension direction. The water hole (501) is connected to circulating water. An eccentric wheel C (1053) is also installed on the main shaft (105). The inner ring of the eccentric wheel C (1053) is fixedly connected to the main shaft (105), and the outer ring is fixed to one end of the connecting rod D (1071). The other end of the connecting rod D (1071) is hinged and fixed to one end of the connecting rod E (1072). The other end of the connecting rod E (1072) is fixedly connected to the drive shaft C (107). The drive shaft C (107) is rotatably connected to the frame (10). The two ends of the drive shaft C (107) are respectively hinged and fixedly connected to the linkage mechanism C. The cooling blade (50) and the hot cutting blade (301) move synchronously through the linkage mechanism C.

6. A rapid bag-making machine according to claim 5, characterized in that, The linkage mechanism C includes a connecting rod F (1073) and a driving rod C (1074). One end of the connecting rod F (1073) is fixedly connected to the driving shaft C (107), and the other end is hinged and fixedly connected to the lower end of the driving rod C (1074). The driving rod C (1074) is threaded into a linear bearing on the frame (10), and the upper end of the driving rod C (1074) is fixedly connected to the end of the cooling blade (50).

7. A rapid bag-making machine according to claim 1, characterized in that, One end of the lower rubber roller (202) is connected to the drive motor D (104). The upper rubber roller (201) and the lower rubber roller (202) are respectively provided with multiple annular grooves (203) along the length direction. An upper air inlet pipe (204) and a lower air inlet pipe (205) are respectively arranged axially parallel behind the upper rubber roller (201) and the lower rubber roller (202). The upper air inlet pipe (204) and the lower air inlet pipe (205) are fixedly connected to the frame (10). The upper air inlet pipe (204) is provided with multiple air blowing pipes A (2041) along the length direction. The lower air inlet pipe (205) is provided with multiple air blowing pipes B (2051) along the length direction. The air outlet of the air blowing pipe A (2041) passes through the annular groove (203) on the upper rubber roller (201). The air outlet of the air blowing pipe B (2051) passes through the annular groove (203) on the lower rubber roller (202).

8. A rapid bag-making machine according to claim 7, characterized in that, A transition plate (108) is also fixed on the frame (10). One side of the transition plate (108) is located at the end of the air blowing pipe B (2051), and the other side extends to the upper cut surface of the support roller (302).

9. A rapid bag-making machine according to claim 1, characterized in that, A bag-pulling mechanism (60) is also provided between the hot shearing device (30) and the bag-pressing device (40). The bag-pulling mechanism (60) includes a rotary chain (601), a first rotating shaft (602), a second rotating shaft (603), and a lever (604). The first rotating shaft (602) and the second rotating shaft (603) are rotatably connected to the frame (10). The first rotating shaft (602) is located above the support plate (402), and the second rotating shaft (603) is located below the support plate (402). A sprocket is provided on the second rotating shaft (603), and the rotating chain (601) meshes with the sprocket for transmission. There are two rotating chains (601), and multiple levers (604) are evenly distributed between the two rotating chains (601). There is a pressure claw shaft (701) on the frame (10). The pressure claw shaft (701) is located between the first rotating shaft (602) and the second rotating shaft (603). Pressure claws (7011) are evenly distributed on the pressure claw shaft (701) for pressing the tail end of the film bag on the support plate (402).

10. A rapid bag-making machine according to claim 9, characterized in that, A pulley B (1021) is rotatably connected to the second rotating shaft (603). The pulley B (1021) is connected to the output end of the drive motor B (102). A limiting ring (6031) is installed on the outside of the pulley B (1021). The limiting ring (6031) is fixedly connected to the second rotating shaft (603). Multiple through holes B (60311) are provided inside the limiting ring (60311). A compression spring (60312) is installed in the through hole B (60311). A steel ball (603) is provided between the compression spring (60312) and the pulley B (1021). 13) The outer side of the pulley B (1021) is provided with a plurality of hemispherical grooves A (10211) along the circumference. The steel ball is disposed in the hemispherical grooves A (10211). An eccentric shaft (60314) is fixedly connected to the outer side of the limiting ring (6031). The eccentric shaft (60314) is rotatably connected to a fixing block (6033). The fixing block (6033) is connected to the guide rod of the cylinder D (6034). The tail of the cylinder D (6034) is rotatably connected to one end of the connecting plate (6035). The other end of the connecting plate (6035) is fixedly connected to the pressure claw shaft (701). A positioning block (6036) is fixedly connected to the second rotating shaft (603). A proximity switch for detecting the positioning block (6036) is fixedly connected to the frame (10).

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