A puncher for PVC plastic bag production

Abstract

The utility model discloses a kind of puncher for PVC plastic bag production, it is related to PVC plastic bag production technical field, its technical key points include workbench and installation groove being set in the back of workbench, gas removal structure is provided on workbench, gas removal structure includes hollow arc plate fixedly installed in the top of workbench, several suction holes are set in hollow arc plate, suction pipe that passes through workbench is fixedly installed in the center of hollow arc plate bottom, the utility model is built directional negative pressure system by hollow arc plate and suction mechanism, utilize dense suction hole to capture the chlorine-containing harmful gas generated by laser punching, the gas inhaled is forced to penetrate three layers of activated carbon plate in purification cavity, fully adsorb pollutant, modularization sliding mounting frame cooperates seal cover plate design, greatly simplify replacement process, ensure continuous purification efficiency;Gas detection sensor set in waste gas outlet pipe real-time monitoring residual harmful component, from source to prevent invalid emission, comprehensively improve environmental safety control ability.

Description

Technical Field

[0001] This utility model relates to the field of PVC plastic bag production technology, specifically a punching machine for PVC plastic bag production. Background Technology

[0002] In the production of PVC plastic bags, high-precision and high-efficiency microporous processing is often required on the bag surface to achieve specific functions such as breathability, drainage, or packaging. Compared with traditional mechanical stamping or drilling processes, laser drilling technology has become the mainstream drilling method in modern PVC bag manufacturing due to its core advantages, including non-contact processing, excellent position and aperture control precision, extremely high drilling speed (especially on continuous roll production lines), and unparalleled flexibility (easily programmable to achieve any complex hole pattern). This technology utilizes a precisely focused high-energy-density laser beam (such as a CO2 laser or fiber laser) to instantaneously act on the PVC film surface, causing the local material to melt, vaporize, or ablate in a very short time through photothermal effects, thereby forming an ideal microporous structure with neat edges and a small heat-affected zone.

[0003] However, when a high-energy laser beam acts on a plastic bag, the instantaneous high temperature it generates forces thermal degradation and chemical bond breakage in the material. This process inevitably leads to the decomposition of the PVC molecular chain, releasing harmful gases. These harmful gases threaten the health of on-site operators. Therefore, we propose a novel perforation machine for PVC plastic bag production. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a punching machine for PVC plastic bag production, which can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a punching machine for producing PVC plastic bags, including a workbench and an installation groove on the back of the workbench, wherein a degassing structure is provided on the workbench.

[0006] The degassing structure includes a hollow arc-shaped plate fixedly installed on the top of the workbench. The hollow arc-shaped plate has several suction holes. A suction pipe that penetrates the workbench is fixedly installed at the center of the bottom of the hollow arc-shaped plate. A suction fan is fixedly installed at the lower end of the suction pipe. An exhaust pipe is fixedly installed at the outlet end of the suction fan. A purification box that is threadedly connected to a mounting groove is fixedly installed at the lower end of the exhaust pipe. The inner cavity of the purification box is divided into a purification chamber and an exhaust chamber from top to bottom. A mounting frame is slidably connected to the inner cavity of the purification chamber. Three activated carbon plates are slidably connected to the mounting frame.

[0007] Preferably, the open end of the purification chamber is bolted to a sealing cover plate, and rubber sealing gaskets adapted to the sealing cover plate are fixedly installed around the sealing cover plate.

[0008] Preferably, an exhaust gas outlet pipe is fixedly installed at the open end of the exhaust gas chamber, and a gas detection sensor is fixedly installed on the exhaust gas outlet pipe.

[0009] Preferably, the back of the hollow arc-shaped plate is provided with an L-shaped frame fixedly mounted on the workbench, and a laser generator is fixedly mounted on the L-shaped frame.

[0010] Preferably, the top of the workbench is provided with a clamping structure, the clamping structure includes right-angle plates symmetrically installed on the workbench, two levers that pass through the right-angle plates are slidably connected to the right-angle plates, a pressure plate is fixedly installed at the lower end of the levers, and a pressure spring is sleeved on the outer side of the levers.

[0011] Preferably, the compression spring is located between the right-angle plate and the compression plate; a rubber anti-slip pad is fixedly installed on the bottom of the compression plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up a hollow arc-shaped plate covering the drilling area and linking it with the suction fan, a directional negative pressure airflow system is formed. The densely distributed suction holes on the arc-shaped plate capture the harmful gases generated during laser drilling, preventing the harmful gases from spreading to the working environment and directly protecting the health of the operators.

[0013] 2. By setting up multi-layer activated carbon plates and a detachable mounting bracket, the inhaled harmful gases are forced to penetrate the three-layer activated carbon structure in the purification chamber, fully adsorbing and filtering pollutants such as chlorinated organic matter; its modular sliding design combined with a sealing cover greatly simplifies the replacement process after the activated carbon is saturated, ensuring the sustainability of purification efficiency.

[0014] 3. By installing gas detection sensors at the exhaust pipe, the residual amount of harmful components in the purified gas is monitored in real time, forming a closed-loop feedback: once the detection exceeds the standard, an automatic warning is issued that the activated carbon plate has reached its adsorption limit and needs to be replaced in time, thus eliminating ineffective emissions from the source and strengthening environmental safety management. Attached Figure Description

[0015] Figure 1 This is a complete structural schematic diagram of the present invention; Figure 2 This utility model Figure 1 Another perspective structural diagram; Figure 3 This utility model Figure 2 Enlarged structural diagram at point A above; Figure 4This is a cross-sectional structural diagram of the purification box of this utility model; Figure 5 This is a schematic diagram of the mounting frame and activated carbon plate of this utility model.

[0016] In the picture: 1. Workbench; 2. Mounting slot; 3. Degassing structure; 301. Hollow arc plate; 3011. Suction hole; 302. Suction pipe; 303. Fan; 304. Exhaust pipe; 305. Purification box; 306. Mounting bracket; 307. Activated carbon plate; 4. Waste gas outlet pipe; 5. Gas detection sensor; 6. L-shaped frame; 7. Laser generator; 8. Clamping structure; 801. Right-angle plate; 802. Pull rod; 803. Pressure plate; 804. Pressure spring. Detailed Implementation

[0017] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0018] This utility model provides a technical solution: Please see Figures 1-5 A punching machine for producing PVC plastic bags includes a workbench 1 and a mounting groove 2 on the back of the workbench 1. A degassing structure 3 is provided on the workbench 1.

[0019] The degassing structure 3 includes a hollow arc-shaped plate 301 fixedly installed on the top of the workbench 1. The hollow arc-shaped plate 301 has several suction holes 3011. A suction pipe 302 penetrating the workbench 1 is fixedly installed at the center of the bottom of the hollow arc-shaped plate 301. A suction fan 303 is fixedly installed at the lower end of the suction pipe 302. An exhaust pipe 304 is fixedly installed at the outlet end of the suction fan 303. A purification box 305 threadedly connected to the mounting groove 2 is fixedly installed at the lower end of the exhaust pipe 304. The inner cavity of the purification box 305 is divided into a purification chamber and an exhaust chamber from top to bottom. A mounting frame 306 is slidably connected to the inner cavity of the purification chamber. Three activated carbon plates 307 are slidably connected to the mounting frame 306.

[0020] The degassing structure 3 forms a negative pressure through the dense air intake holes 3011 on the hollow arc plate 301 and the suction fan 303, which quickly captures the chlorine-containing harmful gas generated by laser drilling. After being introduced into the purification box 305 through the air intake pipe 302, the gas passes through the three layers of activated carbon plates 307 in sequence to achieve deep purification. The layered design of the purification chamber and the exhaust chamber ensures that pollutants are adsorbed in stages. Finally, the qualified gas is discharged through the exhaust pipe. The whole process effectively prevents the diffusion of harmful gases and ensures the safety of the operating environment. At the same time, the modular activated carbon components are easy to replace and maintain quickly.

[0021] In some embodiments, a sealing cover is bolted to the open end of the purification chamber, and a rubber sealing gasket adapted to the sealing cover is fixedly installed around the sealing cover.

[0022] In this embodiment, the open end of the purification chamber is designed with a sealing cover plate and a rubber sealing gasket connected by bolts. This design ensures that the purification chamber is completely sealed when the activated carbon plate is replaced, preventing secondary pollution caused by exhaust gas leakage. At the same time, the rubber sealing gasket enhances airtightness. After maintenance, the purification function can be restored by tightening the bolts, ensuring a continuous and efficient exhaust gas treatment effect.

[0023] Please see Figure 2 and Figure 3 An exhaust gas outlet pipe 4 is fixedly installed at the open end of the exhaust gas chamber, and a gas detection sensor 5 is fixedly installed on the exhaust gas outlet pipe 4.

[0024] The exhaust gas chamber discharges purified gas through the exhaust gas outlet pipe 4 set at the open end. The gas detection sensor 5 monitors the concentration of harmful substances in the exhaust gas in real time. If the detection value exceeds the standard, it triggers an alarm to replace the activated carbon plate 307, forming a closed-loop feedback mechanism to ensure that the emitted gas meets safety standards, eliminate ineffective emissions from the source, and strengthen the effect of environmental safety management.

[0025] Please see Figures 1-4 The back of the hollow arc plate 301 is provided with an L-frame 6 fixedly installed on the workbench 1, and a laser generator 7 is fixedly installed on the L-frame 6.

[0026] The laser generator 7 is fixedly installed on the L-frame 6 on the back of the hollow arc plate 301. Its position design ensures that the laser beam is accurately focused on the perforation area of ​​the PVC plastic bag, which not only ensures the high efficiency of laser processing, but also allows the generated harmful gases to be captured in time by the arc plate negative pressure system, realizing the simultaneous optimization of processing and waste gas treatment.

[0027] Please see Figure 1 The top of the workbench 1 is provided with a clamping structure 8. The clamping structure 8 includes a right-angle plate 801 symmetrically installed on the workbench 1. Two levers 802 that pass through the right-angle plate 801 are slidably connected on the right-angle plate 801. A pressure plate 803 is fixedly installed at the lower end of the lever 802. A pressure spring 804 is sleeved on the outside of the lever 802.

[0028] Pull the lever 802 upward to raise the clamping plate 803, place the edge of the PVC plastic bag below, and then release it. The clamping spring 804 pushes the clamping plate 803 to work with the rubber anti-slip pad to firmly press it onto the worktable 1. This ensures that the position of the plastic bag is fixed during laser drilling, preventing drilling deviation or failure due to material movement, and ensuring processing accuracy and finished product quality.

[0029] In some embodiments, the compression spring 804 is located between the right-angle plate 801 and the compression plate 803; a rubber anti-slip pad is fixedly installed on the bottom of the compression plate 803.

[0030] In this embodiment, when clamping the PVC plastic bag, the compression spring 804 is compressed between the right-angle plate 801 and the clamping plate 803 to provide stable pressure. The rubber anti-slip pad at the bottom of the clamping plate 803 enhances friction, ensuring that the plastic bag is in a stable position during laser drilling, preventing slippage that could lead to drilling deviation, and ensuring processing accuracy and finished product quality. At the same time, the rubber anti-slip pad protects the surface of the plastic bag from damage.

[0031] In practical use, the working principle of this utility model is as follows: When using this device, first place the PVC plastic bag that needs to be punched on the workbench 1. Securely clamp the plastic bag using the clamping structure 8: pull the lever 802 upward to compress the clamping spring 804, causing the clamping plate 803 to rise; after placing the edge of the plastic bag under the clamping plate 803, release the lever 802, and the clamping spring 804 will push the clamping plate 803 downward, which, together with the rubber anti-slip pad, firmly presses the left and right sides of the plastic bag onto the workbench 1.

[0032] Subsequently, laser generator 7 is activated to punch holes in the clamped PVC plastic bags. During the laser punching process, the high-energy laser beam acts on the PVC material, instantly generating high temperatures, causing localized thermal degradation of the material and releasing harmful gases (such as hydrogen chloride).

[0033] To address this critical issue, the suction fan 303 needs to be activated simultaneously. The suction fan 303 operates, creating negative pressure inside the hollow arc-shaped plate 301 connected to it via the suction pipe 302. This hollow arc-shaped plate 301 covers the perforated area, and its arc design helps guide airflow. The negative pressure causes the multiple suction holes 3011 distributed on the surface of the hollow arc-shaped plate 301 to generate strong suction, capturing and drawing in harmful gases generated immediately near the laser drilling point.

[0034] The drawn-in harmful gas mixture is transported through the intake pipe 302 and the exhaust pipe 304 to the purification chamber at the top of the purification box 305. Inside the purification chamber, the airflow must sequentially pass through three activated carbon plates 307 that are slidably mounted on the mounting bracket 306. The activated carbon plates 307 utilize their large specific surface area and adsorption capacity to effectively adsorb and filter out harmful gas molecules (especially chlorinated organic compounds) from the airflow.

[0035] After being purified by the activated carbon plate 307, the gas flows downwards into the waste gas chamber at the bottom of the purification box 305 for temporary storage. Subsequently, the treated gas is discharged through the waste gas outlet pipe 4 connected to the open end of the waste gas chamber. To ensure safe emissions and monitor the purification effect, a gas detection sensor 5 is installed on the waste gas outlet pipe 4. This sensor detects the concentration of residual harmful gases in the discharged gas in real time. If the detection data shows that the content of harmful gases exceeds the standard (does not meet the standard), it clearly indicates that the current purification effect is insufficient, meaning that the activated carbon plate 307 in the purification chamber has reached or is close to its adsorption saturation limit, and its adsorption capacity has significantly decreased, requiring replacement.

[0036] The steps for replacing activated carbon plate 307 are as follows: First, remove the bolted sealing cover (its rubber sealing gasket ensures the purification chamber is airtight). Then, pull the entire mounting bracket 306 out of the purification chamber to easily remove the saturated old activated carbon plate 307 and replace it with a new one. After replacement, reinstall the mounting bracket 306 and tighten the sealing cover to restore the purification function. This closed-loop degassing system, integrating real-time gas capture, high-efficiency activated carbon adsorption, and online emission monitoring, directly targets and effectively solves the problem of harmful gas hazards generated during laser drilling, ensuring a safe operating environment.

[0037] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A punching machine for producing PVC plastic bags, characterized in that, Includes a workbench (1) and a mounting slot (2) on the back of the workbench (1), wherein the workbench (1) is provided with a degassing structure (3). The degassing structure (3) includes a hollow arc plate (301) fixedly installed on the top of the workbench (1). The hollow arc plate (301) has several suction holes (3011). A suction pipe (302) penetrating the workbench (1) is fixedly installed at the center of the bottom of the hollow arc plate (301). A suction fan (303) is fixedly installed at the lower end of the suction pipe (302). An exhaust pipe (304) is fixedly installed at the outlet end of the suction fan (303). A purification box (305) threadedly connected to the mounting groove (2) is fixedly installed at the lower end of the exhaust pipe (304). The inner cavity of the purification box (305) is divided into a purification chamber and an exhaust gas chamber from top to bottom. A mounting frame (306) is slidably connected to the inner cavity of the purification chamber. Three activated carbon plates (307) are slidably connected to the mounting frame (306).

2. The punching machine for producing PVC plastic bags according to claim 1, characterized in that: The open end of the purification chamber is bolted to a sealing cover plate, and rubber sealing gaskets adapted to the sealing cover plate are fixedly installed around the sealing cover plate.

3. The punching machine for producing PVC plastic bags according to claim 1, characterized in that: An exhaust gas outlet pipe (4) is fixedly installed at the open end of the exhaust gas chamber, and a gas detection sensor (5) is fixedly installed on the exhaust gas outlet pipe (4).

4. A punching machine for producing PVC plastic bags according to claim 1, characterized in that: The hollow arc plate (301) has an L-frame (6) fixedly installed on the workbench (1) on its back side, and a laser generator (7) is fixedly installed on the L-frame (6).

5. A punching machine for producing PVC plastic bags according to claim 1, characterized in that: The top of the workbench (1) is provided with a clamping structure (8), which includes a right-angle plate (801) symmetrically installed on the workbench (1). Two levers (802) that pass through the right-angle plate (801) are slidably connected on the right-angle plate (801). A pressure plate (803) is fixedly installed at the lower end of the lever (802), and a pressure spring (804) is sleeved on the outside of the lever (802).

6. A punching machine for producing PVC plastic bags according to claim 5, characterized in that: The compression spring (804) is located between the right-angle plate (801) and the compression plate (803); a rubber anti-slip pad is fixedly installed on the bottom of the compression plate (803).

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