Punching equipment for air-permeable holes of non-woven thermal pad bag body

Abstract

The utility model relates to stamping equipment technical field, concretely is the breathable hole stamping equipment of hot paste non -woven hot paste cloth bag body. Including frame and install two hydraulic cylinders on it, be equipped with two synchronous rotation's material roll on the frame, have been coiled non -woven bag film between two material rolls, be connected with the stamping frame through two hydraulic cylinders on the frame, rotationally install transmission shaft on the stamping frame, transmission shaft normal rotation when the stamping frame is driven to move up, transmission shaft reverses when the stamping frame moves down, the stamping frame is slidably connected with the vibration cutting frame, and vibration generating system is equipped between vibration cutting frame and the stamping frame, rotationally install two punch rotary pipes on vibration cutting frame, two punch rotary pipes all with transmission shaft synchronous rotation. The utility model has the beneficial effects that: the present application passes through the composite processing scheme of high -frequency vibration, rotary shearing, electric heating softening, solves the problem that the present stamping equipment breathable hole edge is easy to appear burr, fibre tear.

Description

Technical Field

[0001] This utility model relates to the field of stamping equipment technology, specifically to a stamping equipment for the vent holes of a heat-bonded nonwoven fabric bag. Background Technology

[0002] In the production process of heat-bonded nonwoven bags, the ventilation holes are a key structural element ensuring the bag's functionality. Their processing quality directly affects the bag's air permeability, appearance precision, and subsequent heat-bonding sealing effect. Currently, the industry mainly relies on traditional rigid stamping equipment or simple drilling devices for processing ventilation holes in heat-bonded nonwoven bags. However, due to the characteristics of the substrate material of heat-bonded nonwoven bags and the design flaws of existing equipment, many difficult-to-solve technical problems exist in the production process, as follows: When punching holes in existing stamping equipment, burrs and fiber tears are easily generated at the edges of the ventilation holes, resulting in poor hole shape accuracy and failure to meet product quality requirements. At the same time, punching waste is prone to sticking to the cutting edge of the tool or blocking the equipment channel, requiring frequent machine stops for cleaning, interrupting the continuous production process, resulting in low production efficiency. Furthermore, in the existing technology, the non-woven bag film conveying and punching action have poor linkage, which easily leads to hole position deviation and the scrapping of batch products. Based on this, the present invention provides a punching device for the vent holes of a heat-bonded nonwoven fabric bag to solve the problems mentioned in the background art. Utility Model Content

[0003] This utility model addresses the technical problems existing in the prior art by providing a punching device for the ventilation holes of heat-bonded nonwoven fabric bags. This solves the problems of existing punching equipment where the ventilation hole edges are prone to burrs and fiber tears, resulting in poor hole shape accuracy and failure to meet product quality requirements. Furthermore, punching waste easily adheres to the cutting edge of the tool or blocks the equipment channel, requiring frequent machine stops for cleaning, interrupting continuous production processes, and leading to low production efficiency. Additionally, in the prior art, the nonwoven bag film conveying and punching actions have poor linkage, easily causing hole position misalignment and resulting in the scrapping of batches of products.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a punching device for the vent holes of a heat-bonded nonwoven fabric bag includes a frame and two hydraulic cylinders mounted on it. The frame is provided with two synchronously rotating material rollers, and a nonwoven fabric bag film is wound between the two material rollers. A punching frame is connected to the frame through the two hydraulic cylinders. A drive shaft is rotatably mounted on the punching frame. When the hydraulic cylinder drives the punching frame to move upward, the drive shaft rotates forward. When the punching frame moves downward, the drive shaft rotates in reverse. A vibrating cutting frame is slidably connected to the punching frame, and a vibration generating system is provided between the vibrating cutting frame and the punching frame. Two punching tubes are rotatably mounted on the vibrating cutting frame. Both punching tubes rotate synchronously with the drive shaft. Each punching tube is provided with an electric heating jacket, and each punching tube is provided with a high-pressure spray channel with an open bottom end. The punching frame is provided with a pressure supply system for supplying high-pressure air to the high-pressure spray channel. It also includes a positioning plate and a bearing plate fixedly connected to the frame. Both the positioning plate and the bearing plate have two through holes, and two pressure springs are installed between the positioning plate and the vibrating cutter.

[0005] Based on the above technical solution, the present invention can be further improved as follows.

[0006] As a preferred technical solution of this utility model, it also includes an unwinding motor mounted on the frame, the output shaft end of the unwinding motor being fixedly connected to one of the material rollers, and a first synchronous toothed belt being wound between the two material rollers.

[0007] As a preferred technical solution of this utility model, a gear shaft and a differential shaft are rotatably mounted on the stamping frame, a transmission gear is mounted on the gear shaft, a fixed gear plate that meshes with the transmission gear is mounted on the frame, a first bevel gear is mounted on both the gear shaft and the differential shaft, the two first bevel gears mesh orthogonally, a first pulley is mounted on the differential shaft, a second pulley is mounted on the transmission shaft, a second synchronous toothed belt is connected between the first pulley and the second pulley, and the radius of the first pulley is 3 to 5 times the radius of the second pulley.

[0008] As a preferred technical solution of this utility model, the vibration generating system includes a wheel axle rotatably connected to the stamping frame, a second bevel gear mounted on both the wheel axle and the transmission shaft, the two second bevel gears meshing orthogonally, an eccentric cam mounted on the wheel axle, a follower wheel rotatably mounted on the vibrating cutting frame, the outer contour of the eccentric cam rolling contacting the wheel surface of the follower wheel, and a return spring mounted between the vibrating cutting frame and the stamping frame.

[0009] As a preferred technical solution of this utility model, a synchronous shaft groove is provided at the top of one of the punched spiral tubes and is slidably connected to the drive shaft. The cross-section of the synchronous shaft groove and the drive shaft are both regular hexagonal. A third synchronous toothed belt is used for transmission connection between the two punched spiral tubes.

[0010] As a preferred technical solution of this utility model, it also includes a waste collection box that is snapped onto the frame. The waste collection box is located directly below the pressure plate, which is located below the non-woven bag film. A microcontroller is installed on the frame.

[0011] As a preferred technical solution of this utility model, the pressure supply system includes a pressure pump installed on the stamping frame. The air outlet of the pressure pump is connected to a pressure storage tank through a one-way air outlet pipe. A pressure probe is installed at the connection between the one-way air outlet pipe and the pressure storage tank. The data terminal of the pressure probe is connected to the microcontroller. A three-way pipe is installed on the vibrating cutter frame. Both high-pressure jets are rotatably connected to the three-way pipe. The air outlet of the pressure storage tank is connected to the three-way pipe through a corrugated hose. A solenoid valve is installed at the connection between the pressure storage tank and the corrugated hose. The electrical control terminal of the solenoid valve is electrically connected to the microcontroller.

[0012] As a preferred technical solution of this utility model, a V-shaped rotating cutter is fixedly installed at the bottom of the punched spiral tube.

[0013] The beneficial effects of this utility model are: 1. This utility model solves the problem of burrs and fiber tearing at the edges of vent holes in existing stamping equipment by using a composite processing scheme of high-frequency vibration, rotary shearing, and electrothermal softening. Firstly, the electrothermal jacket can precisely control the temperature of the punching tube at the nonwoven fiber softening threshold, temporarily reducing the binding force between fiber molecules and lowering the shearing resistance, thus avoiding fiber breakage and outward turning due to rigid force during traditional cold stamping. Secondly, the high-frequency vibration system enables the V-shaped rotary cutter to generate high-frequency micro-amplitude vibration when it contacts the nonwoven bag film, transforming the one-time fiber cutting into high-frequency progressive shearing, reducing the squeezing and tearing of fibers around the hole. Thirdly, the rotary shearing trajectory of the V-shaped rotary cutter is first point-cutting and positioning, and then circular closing cutting, which can ensure that the fiber cutting surface is flat and the hole contour is perfectly matched with the shape of the cutter. This scheme reduces the burr rate at the edge of the vent hole and improves the punching accuracy.

[0014] 2. During operation, this utility model simultaneously solves the problems of punching waste sticking to the cutting tool and clogging the channel, achieving continuous production without interruption. On the one hand, the V-shaped rotary cutter can cut the waste into a regular circle with smooth edges, avoiding the problem of irregular broken waste from traditional rigid stamping easily entangled in the cutting tool. On the other hand, the high-frequency vibration system, while assisting in shearing, can quickly separate the waste from the cutting edge of the tool through micro-vibration, preventing adhesion caused by the fluffy characteristics of non-woven fabric fibers. In addition, the high-pressure spray channel integrated inside the punching tube will spray clean compressed air of 0.3-0.5MPa at the moment the shearing is completed, which not only blows the waste away from the non-woven fabric bag film holes, but also simultaneously cools the holes that have just been sheared. The waste is collected directly through a dedicated channel. This linkage mechanism eliminates the need for the equipment to stop and clean the waste, solving the drawback of traditional equipment that requires stopping for cleaning.

[0015] 3. When this utility model is working, it forms a closed-loop linkage of conveying, positioning, punching and waste removal, which solves the problem of poor linkage between non-woven bag film conveying and punching action, and reduces the risk of batch scrapping through multi-system collaboration. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of the equipment for punching the vent holes of a heat-bonded nonwoven fabric bag. Figure 2 for Figure 1 A structural diagram from another perspective; Figure 3 This is a schematic diagram of the transmission gear and the fixed gear plate. Figure 4 for Figure 3 A magnified schematic diagram of the partial structure at point A in the middle; Figure 5 for Figure 3 A schematic diagram of the cross-sectional structure; Figure 6 for Figure 5 A magnified schematic diagram of the local structure at point B; Figure 7 This is a schematic diagram of the structure of the pressure plate and through holes.

[0017] The attached diagram lists the components represented by each number as follows: 1. Frame; 2. Hydraulic cylinder; 3. Material roller; 4. Non-woven bag film; 5. Stamping frame; 6. Drive shaft; 7. Vibrating cutter frame; 8. Punching spool tube; 9. Heating jacket; 10. High-pressure spray channel; 11. Positioning pressure plate; 12. Pressure plate; 13. Through hole; 14. Pressure spring; 15. Unwinding motor; 16. Gear shaft; 17. Differential shaft; 18. Transmission gear; 19. Fixed gear plate; 20. Wheel axle; 21. Eccentric cam; 22. Follower wheel; 23. Return spring; 24. Waste receiving box; 25. Microcontroller; 26. Pressure pump; 27. Pressure tank; 28. Air pressure probe; 29. ​​T-pipe; 30. Solenoid valve. Detailed Implementation

[0018] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0019] The present invention provides the following preferred embodiments. like Figure 1-7 As shown, the air vent punching equipment for heat-bonded nonwoven fabric bags includes a frame 1 and two hydraulic cylinders 2 mounted on it. The frame 1 is equipped with two synchronously rotating material rollers 3. It also includes an unwinding motor 15 mounted on the frame 1. The output shaft of the unwinding motor 15 is fixedly connected to a material roller 3. A first synchronous toothed belt is wound between the two material rollers 3. A non-woven bag film 4 is wound between the two material rollers 3. Both material rollers 3 are equipped with a first toothed pulley that is connected to the first synchronous toothed belt; By directly driving the active material roller 3 to rotate through the unwinding motor 15, and cooperating with the first synchronous toothed belt wound between the two material rollers 3, the power of the unwinding motor 15 can be accurately and without slippage transmitted to the driven material roller 3, so as to achieve synchronous and uniform rotation of the two material rollers 3. This transmission method can strictly ensure that the conveying speed of the nonwoven bag film 4 is matched with the rhythm of the subsequent punching action, and avoid the stretching, wrinkling or conveying deviation of the nonwoven bag film 4 due to the asynchronous rotation speed of the material roller 3, thereby ensuring the punching position accuracy of the air vent on the nonwoven bag film 4. A stamping frame 5 is connected to the frame 1 by two hydraulic cylinders 2. A drive shaft 6 is rotatably mounted on the stamping frame 5. When the hydraulic cylinders 2 drive the stamping frame 5 to move upward, the drive shaft 6 rotates forward. When the stamping frame 5 moves downward, the drive shaft 6 rotates in reverse. A gear shaft 16 and a differential shaft 17 are rotatably mounted on the stamping frame 5. A transmission gear 18 is mounted on the gear shaft 16. A fixed gear plate 19 that meshes with the transmission gear 18 is mounted on the frame 1. A first bevel gear is mounted on both the gear shaft 16 and the differential shaft 17. The two first bevel gears mesh orthogonally. A first pulley is mounted on the differential shaft 17. A second pulley is mounted on the transmission shaft 6. A second synchronous toothed belt is used to drive the first pulley and the second pulley. In a preferred embodiment, the radius of the first pulley is four times the radius of the second pulley; When the hydraulic cylinder 2 drives the stamping frame 5 to move up and down, the transmission gear 18 on the stamping frame 5 meshes and rolls along the fixed tooth plate 19 fixed on the frame 1, which can convert the linear motion of the stamping frame 5 into the rotational motion of the toothed shaft 16. Then, the transmission direction is changed by two orthogonally meshing first bevel gears, and the power is transmitted to the differential shaft 17, and finally transmitted to the drive shaft 6 via the first pulley and the second synchronous toothed belt; Among them, the differential design in which the radius of the first pulley is 4 times that of the second pulley can amplify the low-speed rotation of the gear shaft 16 into the high-speed rotation of the transmission shaft 6, so that the transmission shaft 6 can achieve high-speed forward rotation when moving upward and reverse rotation when moving downward within a single up and down stroke of the stamping frame 5. This integrated transmission structure, which combines linear motion, rotational motion, and differential amplification, eliminates the need for an additional independent drive motor to rotate the transmission shaft 6, simplifying the power system layout of the equipment and reducing energy consumption. At the same time, the rotation direction of the drive shaft 6 is precisely linked with the movement direction of the stamping frame 5, so as to synchronously rotate and punch the subsequent punching tube 8. After the drive shaft 6 rotates forward and reverse, it drives the V-shaped rotary cutter to rotate and reverse synchronously. During the forward rotation, the V-shaped rotary cutter comes into contact with the heated non-woven bag film 4. Through the combined action of rotational shearing and thermal melting, it avoids the tearing or rough edges of non-woven fibers caused by traditional stamping and forms a smooth circular cut. Furthermore, the rotation setting of the V-shaped rotary cutter can reduce cutting resistance and improve punching efficiency. When rising, the drive shaft 6 reverses, driving the punching tube 8 to reverse. At the same time, the high-pressure spray channel 10 sprays high-pressure gas into the cut. When reversing, the blade generates reverse friction force on the cut. Combined with the high-pressure airflow, it can quickly peel off the waste material adhering to the blade and prevent the waste material from clogging the through hole 13. During the reversal process, the blade performs a slight secondary scraping on the cut edge to further eliminate burrs and improve the dimensional accuracy of the vent hole. A vibratory cutting frame 7 is slidably connected to the stamping frame 5, and a vibration generating system is provided between the vibratory cutting frame 7 and the stamping frame 5; The vibration generating system includes a wheel axle 20 rotatably connected to the stamping frame 5. A second bevel gear is installed on both the wheel axle 20 and the transmission shaft 6. The two second bevel gears mesh orthogonally. An eccentric cam 21 is installed on the wheel axle 20. A follower wheel 22 is rotatably installed on the vibrating cutter frame 7. The outer contour of the eccentric cam 21 rolls in contact with the wheel surface of the follower wheel 22. A return spring 23 is installed between the vibrating cutter frame 7 and the stamping frame 5. When the drive shaft 6 rotates, it drives the wheel shaft 20 to rotate synchronously through two orthogonally meshing second bevel gears. The eccentric cam 21 on the wheel shaft 20 rotates accordingly, and its eccentric structure will generate a periodic pushing force on the follower wheel 22 on the vibrating cutter 7. With the return spring 23 between the vibrating cutter 7 and the stamping frame 5, the vibrating cutter 7 can achieve high-frequency small-amplitude reciprocating vibration along the sliding direction of the stamping frame 5 under the alternating action of the eccentric cam 21 pushing and the spring returning. This vibration design enables the punching tube 8 on the vibratory cutting frame 7 to add a vibration cutting action during the downward punching process. Compared with traditional rigid stamping, it can effectively reduce the frictional resistance between the punching tube 8 and the non-woven bag film 4, and avoid the problem of rough and torn punching edges caused by fiber adhesion of the non-woven bag film 4. At the same time, high-frequency vibration can quickly separate the waste generated by punching from the non-woven bag film 4, preventing the waste from clogging the high-pressure spray channel 10 of the punching tube 8 or remaining on the surface of the non-woven bag film 4, thus improving the forming quality of the air holes and the smoothness of continuous operation of the equipment. Specifically, in a preferred embodiment, the vibration generating system produces high-frequency vibrations of 20-50 Hz when it is in operation; Two perforated tubes 8 are rotatably mounted on the vibratory cutting frame 7. A V-shaped rotating cutter is fixedly mounted at the bottom of the perforated tube 8. Both perforated tubes 8 rotate synchronously with the drive shaft 6. A synchronous shaft groove is provided at the top of a perforated spiral tube 8, which is slidably connected to the drive shaft 6. The cross-sections of the synchronous shaft groove and the drive shaft 6 are both regular hexagonal. A third synchronous toothed belt is used for transmission connection between the two perforated spiral tubes 8. Both perforated spiral tubes 8 are equipped with second toothed pulleys that are connected to the third synchronous toothed belt; On the one hand, a punched spool tube 8 slides with the drive shaft 6 through the regular hexagonal synchronous shaft groove at the top, which can realize the synchronous rotation of the drive shaft 6 and the punched spool tube 8, and also allow the punched spool tube 8 to slide along the drive shaft 6 axially when it vibrates up and down with the vibrating cutter 7, ensuring that the vibration action and the rotation action do not interfere with each other. On the other hand, the two punching tubes 8 are connected by a third synchronous toothed belt drive, which can realize the synchronous rotation of the two tubes and ensure that the speed of the two vent holes is consistent when they are punched at the same time, thus avoiding the problem of inconsistent hole size and depth due to speed difference. The V-shaped ring cutter fixed at the bottom of the punching tube 8, compared with traditional round or square cutters, can first perform point cutting and positioning on the non-woven bag film 4 during the rotating punching process, and then complete the ring cutting through rotation. This can reduce the force area of ​​a single cut, reduce the tensile deformation of the non-woven bag film 4, and at the same time, the V-shaped cutter has stronger guiding properties, which can accurately control the edge contour of the air hole and avoid the occurrence of burrs and collapse. It is especially suitable for materials such as heat-bonded non-woven bag film 4 that are thin and have easily loose fibers, and improves the forming accuracy and aesthetics of the air hole. Each punched spool tube 8 is equipped with an electric heating jacket 9 and each punched spool tube 8 is provided with a high-pressure nozzle 10 with an opening at the bottom. The punching frame 5 is provided with a pressure supply system that supplies high-pressure air to the high-pressure nozzle 10. The temperature control range of the electric heating jacket 9 is 80-120℃. The electric heating jacket 9 has a built-in temperature control module that is connected to the microcontroller 25 for data transmission. The pressure supply system includes a pressure pump 26 installed on the stamping frame 5. The outlet port of the pressure pump 26 is connected to a pressure tank 27 through a one-way outlet pipe. A pressure probe 28 is installed at the connection between the one-way outlet pipe and the pressure tank 27. The data terminal of the pressure probe 28 is connected to the microcontroller 25. A three-way pipe 29 is installed on the vibrating cutter 7. Both high-pressure nozzles 10 are rotatably connected to the three-way pipe 29. The outlet port of the pressure tank 27 is connected to the three-way pipe 29 through a corrugated hose. A solenoid valve 30 is installed at the connection between the pressure tank 27 and the corrugated hose. The electrical control terminal of the solenoid valve 30 is electrically connected to the microcontroller 25. The pressure pump 26 can continuously deliver high-pressure gas to the pressure tank 27. The pressure tank 27 can buffer and store the high-pressure gas to avoid unstable gas supply to the high-pressure nozzle 10 due to instantaneous pressure fluctuations of the pressure pump 26. The one-way vent pipe prevents the high-pressure gas in the pressure tank 27 from flowing back to the pressure pump 26, thus protecting the service life of the pressure pump 26. The pressure probe 28 monitors the pressure inside the pressure tank 27 in real time and transmits the data to the microcontroller 25. When the pressure is lower than the set threshold, the microcontroller 25 controls the pressure pump 26 to start replenishing the pressure. When the pressure reaches the set value, the microcontroller controls the pressure pump 26 to stop, thereby realizing automatic closed-loop control of the pressure and ensuring that the high-pressure nozzle 10 can always obtain gas with a stable pressure.

[0020] The three-way pipe 29 on the vibratory cutting frame 7 is connected to the high-pressure nozzle 10 of the two perforated swivel pipes 8 through a rotary joint, which can realize the synchronous delivery of high-pressure gas to the two nozzles and adapt to the rotation of the perforated swivel pipes 8 to avoid the air pipe entanglement. The corrugated hose is designed to adapt to the up-and-down vibration of the vibrating cutter 7, preventing the air tube from being damaged by vibration. The solenoid valve 30 is controlled by the microcontroller 25 to open and close precisely when the punching tube 8 completes the punching action. High-pressure gas is sprayed into the punching position through the high-pressure nozzle 10 to blow the waste generated by punching off the non-woven bag film 4 to the waste collection box 24 below. This avoids waste residue from clogging the vent holes or affecting subsequent processes. At the same time, the high-pressure gas can also slightly cool the punching cut to prevent the non-woven bag film 4 from thermally sticking due to the heat of the electric heating jacket 9, further improving the quality of the vent holes and the continuous operating efficiency of the equipment. It also includes a positioning plate 11 and a bearing plate 12 fixedly connected to the frame 1. Both the positioning plate 11 and the bearing plate 12 have two through holes 13. Two bearing springs 14 are installed between the positioning plate 11 and the vibrating cutter 7.

[0021] When the hydraulic cylinder 2 drives the stamping frame 5 to move down, the vibrating cutter 7 first drives the positioning plate 11 to contact the non-woven bag film 4. As the stamping frame 5 continues to move down, the pressure spring 14 between the positioning plate 11 and the vibrating cutter 7 is compressed. The elastic force of the pressure spring 14 can press the positioning plate 11 tightly onto the non-woven bag film 4, thereby achieving the pre-fixation of the non-woven bag film 4 in the punching area. Meanwhile, the pressure plate 12 is set below the non-woven bag film 4 and forms an upper and lower clamping structure with the positioning pressure plate 11, which can further limit the displacement of the non-woven bag film 4 during the punching process and avoid the punching position shift caused by the shaking of the non-woven bag film 4. The through holes 13 on the positioning plate 11 and the bearing plate 12 can completely avoid the movement path of the punching tube 8 and the V-shaped ring cutter, ensuring that the cutter can smoothly penetrate the non-woven bag film 4 to complete the punching. At the same time, the through holes 13 can also provide a falling channel for the waste material blown off by high-pressure gas, so that the waste material falls directly into the waste receiving box 24 below. In addition, the elastic buffering effect of the pressure spring 14 can prevent the positioning pressure plate 11 from rigidly squeezing the non-woven bag film 4, which would cause damage to the non-woven bag film 4. It is especially suitable for easily deformable materials such as heat-bonded non-woven bag film 4, ensuring positioning accuracy while protecting the integrity of the non-woven bag film 4 and improving the product qualification rate. It also includes a waste collection box 24 that is snapped onto the frame 1. The waste collection box 24 is located directly below the pressure plate 12, which is located below the non-woven bag film 4. A microcontroller 25 is installed on the frame 1. Both the microcontroller 25 and the air pressure probe 28 can be customized or selected according to actual needs.

[0022] The waste collection box 24 is located directly below the pressure plate 12, which can accurately collect the punching waste falling from the through hole 13 of the pressure plate 12, preventing waste from scattering into the equipment or production environment, reducing the jamming failure of internal parts caused by waste accumulation, reducing the cleaning workload of the production site, and improving the working environment. The waste collection box 24 is connected to the frame 1 by a snap-fit ​​method, which makes it convenient for operators to disassemble and clean it regularly. The operation is convenient and does not affect the continuous operation of the equipment. After the nonwoven bag film 4 is punched, it is then used with a continuous slitting device to complete the regular slitting of the nonwoven bag film 4.

[0023] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A device for punching vent holes in a heat-bonded nonwoven fabric bag, comprising a frame (1) and two hydraulic cylinders (2) mounted thereon, wherein the frame (1) is provided with two synchronously rotating material rollers (3), and a nonwoven fabric bag film (4) is wound between the two material rollers (3), characterized in that, A stamping frame (5) is connected to the frame (1) by two hydraulic cylinders (2). A drive shaft (6) is rotatably mounted on the stamping frame (5). When the hydraulic cylinder (2) drives the stamping frame (5) to move upward, the drive shaft (6) rotates forward. When the stamping frame (5) moves downward, the drive shaft (6) rotates in reverse. A vibrating cutter (7) is slidably connected to the stamping frame (5). A vibration generating system is provided between the vibrating cutter (7) and the stamping frame (5). Two perforated spiral tubes (8) are rotatably mounted on the vibrating cutter (7). Both perforated spiral tubes (8) rotate synchronously with the drive shaft (6). Each perforated spiral tube (8) is equipped with an electric heating jacket (9). Each perforated spiral tube (8) is provided with a high-pressure nozzle (10) with an open bottom end. The stamping frame (5) is provided with a pressure supply system that supplies high-pressure air to the high-pressure nozzle (10). It also includes a positioning plate (11) and a bearing plate (12) fixedly connected to the frame (1). Both the positioning plate (11) and the bearing plate (12) have two through holes (13). Two bearing springs (14) are installed between the positioning plate (11) and the vibrating cutter (7).

2. The air vent punching equipment for the heat-bonded nonwoven fabric bag body according to claim 1, characterized in that, It also includes an unwinding motor (15) mounted on the frame (1), the output shaft of which is fixedly connected to one of the material rollers (3), and a first synchronous toothed belt is wound between the two material rollers (3).

3. The air vent punching equipment for the heat-bonded nonwoven fabric bag body according to claim 1, characterized in that, A gear shaft (16) and a differential shaft (17) are rotatably mounted on the stamping frame (5). A transmission gear (18) is mounted on the gear shaft (16). A fixed gear plate (19) that meshes with the transmission gear (18) is mounted on the frame (1). A first bevel gear is mounted on both the gear shaft (16) and the differential shaft (17). The two first bevel gears mesh orthogonally. A first pulley is mounted on the differential shaft (17). A second pulley is mounted on the transmission shaft (6). A second synchronous toothed belt is connected between the first pulley and the second pulley. The radius of the first pulley is 3 to 5 times the radius of the second pulley.

4. The equipment for punching vent holes in the heat-bonded nonwoven fabric bag body according to claim 1, characterized in that, The vibration generating system includes a wheel axle (20) rotatably connected to the stamping frame (5). A second bevel gear is installed on both the wheel axle (20) and the transmission shaft (6). The two second bevel gears mesh orthogonally. An eccentric cam (21) is installed on the wheel axle (20). A follower wheel (22) is rotatably installed on the vibrating cutter frame (7). The outer contour of the eccentric cam (21) rolls in contact with the wheel surface of the follower wheel (22). A return spring (23) is installed between the vibrating cutter frame (7) and the stamping frame (5).

5. The air vent punching equipment for the heat-bonded nonwoven fabric bag body according to claim 1, characterized in that, The top of one of the punched spiral tubes (8) is provided with a synchronous shaft groove that is slidably connected to the drive shaft (6). The cross-section of the synchronous shaft groove and the drive shaft (6) are both regular hexagonal. A third synchronous toothed belt is connected between the two punched spiral tubes (8).

6. The air vent punching equipment for the heat-bonded nonwoven fabric bag body according to claim 1, characterized in that, It also includes a waste collection box (24) that is snapped onto the frame (1), the waste collection box (24) being located directly below the pressure plate (12), the pressure plate (12) being located below the nonwoven bag film (4), and a microcontroller (25) being installed on the frame (1).

7. The air vent punching equipment for the heat-bonded nonwoven fabric bag body according to claim 1, characterized in that, The pressure supply system includes a pressure pump (26) installed on the stamping frame (5). The outlet port of the pressure pump (26) is connected to a pressure tank (27) through a one-way outlet pipe. A pressure probe (28) is provided at the connection between the one-way outlet pipe and the pressure tank (27). The data terminal of the pressure probe (28) is connected to the microcontroller (25). A three-way pipe (29) is installed on the vibrating cutter (7). Both high-pressure jets (10) are rotatably connected to the three-way pipe (29). The outlet port of the pressure tank (27) is connected to the three-way pipe (29) through a corrugated hose. A solenoid valve (30) is provided at the connection between the pressure tank (27) and the corrugated hose. The electrical control terminal of the solenoid valve (30) is electrically connected to the microcontroller (25).

8. The equipment for punching vent holes in the heat-bonded nonwoven fabric bag body according to claim 1, characterized in that, A V-shaped rotating cutter is fixedly installed at the bottom of the perforated spiral tube (8).

Images