Plastic film double-roller type punching device

Abstract

The utility model relates to a plastic film double-roller type punching device which comprises a cutting roller and a supporting roller, the cutting roller and the supporting roller are connected with a rack, arranged left and right and synchronously and reversely rotated, and a vertically conveyed plastic film penetrates through the space between the cutting roller and the supporting roller and is punched; the cutting roller is a heating roller, the roller surface of the heating roller is connected with an arc-shaped blade for tapping through an adjusting mechanism, and the heating roller conducts heat to heat the arc-shaped blade; a cutting groove matched with the arc-shaped blade is formed in the roller surface of the supporting roller; when the cutting roller and the supporting roller synchronously and reversely rotate, the arc-shaped blade cuts the cutting groove to open a hole in the plastic film; a negative pressure output mechanism used for sucking away film waste is arranged on the supporting roller. According to the punching device, the punching mode of a puncher is changed into hole scalding, the situation that the punching position is torn can be avoided, the punching quality is improved, and the rejection rate is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic film production, in particular to a plastic film double-roller type hole-opening device. Background Art

[0002] Plastic film is a film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins. When the plastic film is produced, planting holes are evenly opened on the film for the convenience of growers. Patent application No. 202321267027.8 discloses a perforated ground film production device, the structure of which includes: a top plate supported above the workbench, a telescopic mechanism fixed on the top plate, and a support plate fixedly connected to the lower end of the telescopic rod of the telescopic mechanism. The rotary motor is fixed on the support plate, and a number of rotary motors are evenly distributed along the width direction of the workbench. A puncher is fixed on each rotary motor, and the puncher is located below the support plate. The limit rod is arranged outside the tail end of the workbench along the width direction of the workbench, and the two ends of the limit rod are respectively rotatably connected to the lower ends of the two connecting pieces, and the upper end of the connecting piece is rotatably connected to the top plate. The ground film reeling mechanism is arranged behind the limit rod. The perforated ground film production device can perform punching immediately after the ground film is produced, and finally the perforated ground film is wound on the ground film reel, which effectively improves the production efficiency.

[0003] Patent application number 202321267027.8 uses a toothed puncher that rotates and lifts at the same time to punch holes. Since the mulch is very thin, the teeth of the puncher can easily tear the hole position during rotation, affecting product quality and can only be scrapped.

[0004] Based on the above technical problems, the applicant proposed a double-roller hole-opening device for plastic film, which changes the hole-opening method from punching with a puncher to "hot hole-opening", which can avoid tearing at the hole-opening position, improve the hole-opening quality, and reduce the scrap rate. Utility Model Content

[0005] The utility model aims at the deficiencies of the prior art and provides a plastic film double-roll type hole-opening device.

[0006] The utility model is realized by the following technical scheme, and provides a plastic film double-roll hole-punching device, comprising a cutting roller and a supporting roller which are connected to a frame, arranged on the left and right and rotate synchronously in the opposite direction, and the vertically conveyed plastic film passes through between the cutting roller and the supporting roller and completes the punching; the cutting roller is a heating roller, and is connected with an arc-shaped blade for punching holes through an adjusting mechanism on the roller surface of the heating roller, and the arc-shaped blade is heated by heat conduction of the heating roller; a cutting groove which matches the arc-shaped blade is arranged on the roller surface of the supporting roller, and when the cutting roller and the supporting roller rotate synchronously in the opposite direction, the arc-shaped blade passes through the cutting groove to punch holes on the plastic film; a negative pressure output mechanism for sucking away waste film is arranged on the supporting roller.

[0007] Preferably, a conveying channel for conveying film waste is provided inside the supporting roller, one end of the conveying channel is communicated with the cutting groove, and the other end is communicated with one end of the rotating shaft of the supporting roller.

[0008] Preferably, the negative pressure output mechanism includes a rotary joint, a conveying pipeline and a negative pressure collection box, wherein the rotary joint is installed at one end of the rotating shaft and communicates with the conveying channel, and the other end of the rotary joint is connected to the negative pressure collection box through the conveying pipeline. The plastic film waste after opening is sucked into the negative pressure collection box through the conveying channel for centralized treatment.

[0009] Preferably, the heating roller is an electromagnetic heating roller or an electrically heated shaft roller.

[0010] Preferably, the adjustment mechanism includes a connecting sleeve and a connecting screw, the connecting sleeve is fixed on the roller surface of the heating roller, the connecting screw is threadedly connected to the connecting sleeve, and the other end of the connecting screw is connected to the arc blade. The connecting sleeve and the connecting screw are connected in coordination, so that the arc blade can be flexibly disassembled and assembled, and is convenient for replacement. At the same time, the distance between the arc blade and the cutting groove can also be adjusted.

[0011] Preferably, a fixing bolt for tightening the connecting screw rod is threadedly connected to the connecting sleeve.

[0012] Preferably, the cutting roller and the supporting roller are driven by reduction motors respectively, and the reduction motors are mounted on the frame.

[0013] The beneficial effects of the utility model are:

[0014] The present application changes the hole-making method from hole punching with a hole puncher to "hot hole making", which can avoid tearing at the hole-making position, improve the hole-making quality, and reduce the scrap rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a side view of the positional relationship between the cutting roller and the support roller of the utility model;

[0016] Figure 2 This is a top view of the position relationship between the cutting roller and the support roller of the utility model;

[0017] Figure 3 yes Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0018] As shown in the figure:

[0019] 1. Cutting roller, 2. Conveying channel, 3. Rotating joint, 4. Support roller, 5. Connecting sleeve, 6. Connecting screw, 8. Curved blade, 9. Fixing bolt, 10. Cutting groove. DETAILED DESCRIPTION

[0020] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0021] like Figure 1-3 As shown, the utility model comprises a cutting roller 1 and a supporting roller 4 connected to a frame, arranged on the left and right and rotating synchronously in the opposite direction. The vertically transported plastic film passes through the cutting roller 1 and the supporting roller 4 and completes the punching. The cutting roller 1 is a heating roller, which is connected to the arc blade 8 for punching holes through an adjustment mechanism on the roller surface of the heating roller. The arc blade 8 is heated by heat conduction of the heating roller. A cutting groove 10 matching the arc blade 8 is provided on the roller surface of the supporting roller 4. When the cutting roller 1 and the supporting roller 4 rotate synchronously in the opposite direction, the arc blade 8 passes through the cutting groove 10 to punch holes in the plastic film. A negative pressure output mechanism for sucking away film waste is provided on the supporting roller 4.

[0022] A conveying channel 2 for conveying film waste is provided inside the support roller 4, one end of which is connected to the cutting groove 10, and the other end is connected to one end of the rotating shaft of the support roller 4. The negative pressure output mechanism includes a rotary joint 3, a conveying pipeline and a negative pressure collection box. The negative pressure collection box is an existing structure. The rotary joint 3 is installed at one end of the rotating shaft and is connected to the conveying channel 2. The other end of the rotary joint 3 is connected to the negative pressure collection box through the conveying pipeline. The plastic film waste after opening is sucked into the negative pressure collection box through the conveying channel 2 for centralized treatment.

[0023] In this embodiment, the heating roller is an electromagnetic heating roller or an electrically heated shaft roller.

[0024] In this embodiment, the adjustment mechanism includes a connecting sleeve 5 and a connecting screw 6. The connecting sleeve 5 is fixed on the roller surface of the heating roller. The connecting screw 6 is threadedly connected to the connecting sleeve 5. The other end of the connecting screw 6 is connected to the arc blade 8. The connecting sleeve 5 and the connecting screw 6 are connected in coordination, so that the arc blade 8 can be flexibly disassembled and assembled, and is convenient for replacement. At the same time, the spacing between the arc blade 8 and the cutting groove 10 can also be adjusted. Further, a fixing bolt 9 for tightening the connecting screw 6 is threadedly connected to the connecting sleeve 5.

[0025] In this embodiment, the cutting roller 1 and the supporting roller 4 are driven by reduction motors respectively, and the reduction motors are installed on the frame.

[0026] When in use, the plastic film passes between the cutting roller 1 and the supporting roller 4. The cutting roller 1 rotates so that the heated arc blade 8 contacts the plastic film and digs holes in the plastic film. The dug film waste is sucked into the negative pressure collection box for centralized treatment.

[0027] The present application changes the hole-making method from hole punching with a hole puncher to "hot hole making", which can avoid tearing at the hole-making position, improve the hole-making quality, and reduce the scrap rate.

[0028] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A plastic film double-roll hole-opening device, characterized in that: It comprises a cutting roller and a supporting roller which are connected to a frame, arranged on the left and right and rotate synchronously in opposite directions. The vertically transported plastic film passes through the cutting roller and the supporting roller and completes the punching. The cutting roller is a heating roller, which is connected to an arc-shaped blade for punching holes on the roller surface of the heating roller through an adjusting mechanism. The arc-shaped blade is heated by heat conduction from the heating roller. A cutting groove which matches the arc-shaped blade is arranged on the roller surface of the supporting roller. When the cutting roller and the supporting roller rotate synchronously in opposite directions, the arc-shaped blade passes through the cutting groove to punch holes in the plastic film. A negative pressure output mechanism for sucking away waste film is arranged on the supporting roller.

2. A plastic film roll-type hole-opening device according to claim 1, characterized in that: A conveying channel for conveying film waste is arranged inside the supporting roller, one end of the conveying channel is communicated with the cutting groove, and the other end is communicated with one end of the rotating shaft of the supporting roller.

3. A plastic film roll-type hole-opening device according to claim 2, characterized in that: The negative pressure output mechanism includes a rotary joint, a delivery pipeline and a negative pressure collection box. The rotary joint is installed at one end of the rotating shaft and communicates with the delivery channel, and the other end of the rotary joint is connected to the negative pressure collection box through the delivery pipeline.

4. The plastic film roll-type hole-opening device according to claim 1, characterized in that: The heating roller is an electromagnetic heating roller or an electrically heated shaft roller.

5. The plastic film roll-type hole-opening device according to claim 1, characterized in that: The adjustment mechanism comprises a connecting sleeve and a connecting screw, the connecting sleeve is fixed on the roller surface of the heating roller, the connecting screw is threadedly connected to the connecting sleeve, and the other end of the connecting screw is connected to the arc blade.

6. A plastic film roll-type hole-opening device according to claim 5, characterized in that: A fixing bolt for tightening the connecting screw rod is threadedly connected to the connecting sleeve.

7. The plastic film roll-type hole-punching device according to claim 1, characterized in that: The cutting roller and the supporting roller are driven by reduction motors respectively, and the reduction motors are installed on the frame.

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