Integrated punching device and process for portable hole of biodegradable plastic bag

By designing an integrated punching device for the handle holes of biodegradable plastic bags, the problem of electrostatic adsorption during the cutting process was solved by using gas injection and electrostatic elimination mechanisms, thus achieving continuous and high-quality cutting.

CN121224221APending Publication Date: 2025-12-30江苏劲松塑料科技有限公司
View PDF 1 Cites 0 Cited by

Patent Information

Application Number
CN202511632134.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-10
Publication Date
2025-12-30

AI Technical Summary

Technical Problem

During the cutting process, plastic bags are attracted to the stamping die due to static electricity, which affects the normal progress of subsequent cutting operations.

Method used

An integrated punching device for the handle hole of a biodegradable plastic bag was designed, which includes a cutting mechanism, an electrostatic elimination mechanism and a feeding mechanism. Gas jetting and electrostatic elimination rods are used to solve the problem of electrostatic adsorption and ensure the continuity of the cutting process.

Benefits of technology

It effectively removes the electrostatic adsorption of plastic slices during the cutting process, ensuring the continuity and quality of the cutting operation and improving the cutting qualification rate.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121224221A_ABST
    Figure CN121224221A_ABST
Patent Text Reader

Abstract

The invention relates to the field of plastic bag processing, in particular to an integrated punching device and process for a handheld hole of a biodegradable plastic bag. The integrated punching device for the handheld hole of the biodegradable plastic bag comprises a supporting box, a workbench is fixed to the upper end of the supporting box, a waste storage barrel is placed in the supporting box, and the integrated punching device further comprises two transverse frames which are arranged in parallel, arranged in the length direction of the workbench and fixed to the workbench through bolts; the bottom mold plate is detachably connected to the working table, and a penetrating opening is formed in the bottom mold plate; and the cutting mechanism comprises a cutting assembly, a positioning assembly and an air supply assembly. According to the integrated punching device for the handheld hole of the biodegradable plastic bag, gas in the air cylinder enters the cavity in the connecting base through the air outlet pipe in the cutting process, and after cutting is completed, gas in the cavity is sprayed out of the air hole, so that a plastic slice adsorbed to the lower end of the cutting disc is blown away, and subsequent continuous cutting machining is facilitated.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This invention relates to the field of plastic bag processing, and in particular to an integrated stamping device and process for handle holes in biodegradable plastic bags. Background Technology

[0002] Plastic bags are bags made primarily of plastic and are widely used for packaging and carrying items in daily life. They are widely used because of their advantages of being lightweight, having a large capacity, being easy to store, and being inexpensive.

[0003] Chinese Patent Publication No. CN 114789583 B describes a "punching device and punching process for a biodegradable plastic bag handle hole". The device involves a strip, a pressing spring, a pressing plate, and a carrier plate moving downwards under their own weight. The strip contacts the biodegradable plastic bag before the punching die does. After the pressing plate contacts the bag, the punching die continues to punch downwards. At this point, the pressing spring is compressed and elastic, and the pressing plate, under this elastic force, squeezes the biodegradable plastic bag, thus achieving fixation before punching. This prevents the biodegradable plastic bag from easily shrinking towards the punching position during punching, resulting in a low punching pass rate, and also prevents the biodegradable plastic bag from shifting, which could affect subsequent punching operations.

[0004] However, the following defects and shortcomings still exist in the application implementation process:

[0005] Plastic materials are prone to generating static electricity. Therefore, after the plastic bag is stamped and cut by the stamping die, the cut pieces will adhere to the stamping die due to static electricity, which will affect subsequent cutting operations.

[0006] Therefore, it is necessary to provide a new integrated stamping device and process for the handle hole of biodegradable plastic bags to solve the above-mentioned technical problems. Summary of the Invention

[0007] To solve the above-mentioned technical problems, the present invention provides an integrated stamping device and process for the handle hole of biodegradable plastic bags.

[0008] The biodegradable plastic bag handle punching device provided by the present invention includes a support box, a worktable fixed to the upper end of the support box, a waste storage bin placed inside, and further includes:

[0009] The crossbar consists of two parallel crossbars arranged along the length of the workbench and bolted to the workbench. The space between the two crossbars is a channel for conveying plastic bags.

[0010] A bottom template, which is detachably connected to the workbench and corresponds to the position of the waste storage bin, has a through opening on the bottom template that limits the cutting size;

[0011] A cutting mechanism, comprising a cutting component, a positioning component, and an air supply component;

[0012] The cutting assembly includes a connecting seat with a cavity inside. A positioning plate is welded and fixed to the upper end, and a cutting disc with a corresponding through-hole is bolted to the lower end. The cutting disc has air holes that communicate with the cavity.

[0013] The positioning component includes a positioning frame, which is sleeved on the outside of the connecting seat and elastically connected thereto, so that the positioning frame can move vertically relative to the connecting seat. The lower end of the positioning frame is integrally connected to a pressure plate for pressing the plastic bag.

[0014] The air supply assembly includes an air cylinder fixed on the pressure plate and a piston rod fixed on the positioning plate. The air cylinder is connected to the internal cavity of the connecting seat through an air outlet pipe. A rubber piston that slides inside the air cylinder is fixed at one end of the piston rod. When the positioning frame moves vertically relative to the connecting seat, the rubber piston moves synchronously inside the air cylinder to draw air or inject gas into the cavity.

[0015] An electrostatic elimination mechanism, which is mounted on a crossbeam, includes electrostatic elimination rods that are installed on the support channel and arranged along the width of the workbench.

[0016] The feeding mechanism consists of two sets, symmetrically installed on the crossbeam near the end. The feeding mechanism includes two vertically distributed conductive rubber rollers with a gap between them for passing through the plastic bag.

[0017] Preferably, an installation port is provided on the workbench at the position corresponding to the waste storage bin. Multiple support blocks are integrally connected to the inner wall of the installation port. The bottom template is embedded in the installation port and supported on the support blocks, and is also fixed to the support blocks by bolts.

[0018] Preferably, the cutting mechanism further includes two sets of support legs bolted to the upper part of the workbench, and a horizontal plate mounted on the upper part of the workbench and arranged along the width direction of the workbench is bolted between the two sets of support legs. A hydraulic cylinder is installed on the upper part of the horizontal plate, and the extension end of the hydraulic cylinder faces vertically downward and is connected to the flange of the positioning plate.

[0019] Preferably, an air nozzle communicating with the cavity is installed on the upper end of the positioning plate.

[0020] Preferably, a vertical rod is welded and fixed to the upper end of the pressure plate. The upper end of the vertical rod passes through the positioning plate and is slidably connected to it. A nut is also threadedly connected to the vertical rod. A spring is sleeved on the vertical rod to press against the pressure plate and the positioning plate. Under normal conditions, the pressure plate is located below the cutting plate and contacts the plastic bag before the cutting plate.

[0021] A pad is fixed to the lower end of the pressure plate with screws.

[0022] Preferably, the air cylinder has an air inlet and an air outlet on its outer circumference near the bottom. A first one-way valve is installed at the air inlet, and an air inlet pipe is fixed to the other end of the first one-way valve. A filter screen is fixed to the other end of the air inlet pipe. A second one-way valve is installed at the air outlet, and one end of the air outlet pipe is fixed to the second one-way valve, while the other end is fixed to the air nozzle.

[0023] The other end of the piston rod is fixed with a threaded rod, which passes through the positioning plate and is fixed by a nut.

[0024] Preferably, the static elimination mechanism further includes two sets of first mounting frames, which are respectively fixed on two crossbeams, and the static elimination rod is fixed between the two sets of first mounting frames;

[0025] A left-right adjustment screw is rotatably connected between the two sets of first mounting brackets, and a smooth rod parallel to the left-right adjustment screw is also fixed. A first motor is bolted to one set of first mounting brackets, and the output end of the first motor is fixed to the left-right adjustment screw via a coupling. Two symmetrically arranged slides are also installed on the left-right adjustment screw, and the two slides are driven to move symmetrically by the left-right adjustment screw. A second mounting bracket is screwed to the lower end of the slides, and a rotatable pulley for positioning the plastic bag is mounted on the second mounting bracket via a shaft.

[0026] Preferably, the feeding mechanism further includes two sets of third mounting frames, which are respectively fixed on two crossbeams. Two parallel rotating shafts are rotatably connected between the two sets of third mounting frames. The conductive rubber roller is fixed on the rotating shafts. A second motor is also bolted to one of the third mounting frames. The output end of the second motor is fixed to one of the rotating shafts through a coupling. Meshing gears are also fixed on the two rotating shafts.

[0027] A process for integrated stamping of handle holes for biodegradable plastic bags includes:

[0028] S1. One end of the rolled plastic strip enters between two conductive rubber rollers and is conveyed by the rotating conductive rubber rollers until the other end is discharged from the conductive rubber roller in another feeding mechanism, realizing loading and unloading. During the process, the conductive rubber rollers remove static electricity from the plastic bag.

[0029] S2. During the conveying process, the edge of the plastic bag extends between two pulleys for positioning. The static eliminator is located above the plastic bag to further eliminate static electricity in the plastic bag.

[0030] S3. The plastic bag moves to the top of the bottom template and stops. The hydraulic cylinder drives the connecting seat to move down. The pressure plate first contacts and squeezes the plastic bag, and then the cutting plate contacts and cuts the plastic bag.

[0031] S4. When the pressure plate squeezes the plastic strip, the cutting plate can continue to move downward relative to the pressure plate. At this time, the piston rod drives the rubber piston to move downward, and the air inside the compression cylinder enters the cavity from the air outlet pipe and is ejected through the air hole at the lower end of the cutting plate. When ejected, it can blow away the plastic strip slices electrostatically adsorbed at the lower end of the cutting plate, so that the slices enter the waste storage bin.

[0032] Compared with related technologies, the integrated punching device for handle holes of biodegradable plastic bags provided by the present invention has the following beneficial effects:

[0033] During the cutting process, the gas inside the air cylinder enters the cavity inside the connector through the air outlet pipe. After the cutting is completed, the gas inside the cavity is ejected from the air hole, thereby blowing away the plastic slices adsorbed on the lower end of the cutting disc, which facilitates subsequent continuous cutting processing. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of a preferred embodiment of the integrated punching device and process for the handle hole of biodegradable plastic bags provided by the present invention.

[0035] Figure 2 This is a schematic diagram of the internal structure of the support box shown in this invention;

[0036] Figure 3 This is a schematic diagram of the structure of the workbench and the bottom template connected in this invention;

[0037] Figure 4 This is a schematic diagram of the cutting mechanism shown in this invention;

[0038] Figure 5 As shown in this invention Figure 4 A partial structural diagram;

[0039] Figure 6 This is a schematic diagram of the structure in which the cutting component and the positioning component of the present invention are connected.

[0040] Figure 7 This is a schematic diagram of the cutting component shown in the present invention;

[0041] Figure 8 This is a schematic diagram of the positioning component shown in the present invention;

[0042] Figure 9 This is a schematic diagram of the gas supply assembly shown in this invention;

[0043] Figure 10 As shown in this invention Figure 9Enlarged structural diagram at point A;

[0044] Figure 11 This is a schematic diagram of the static elimination mechanism shown in the present invention;

[0045] Figure 12 This is a schematic diagram of the feeding mechanism shown in the present invention. Figure 1 ;

[0046] Figure 13 This is a schematic diagram of the feeding mechanism shown in the present invention. Figure 2 .

[0047] The diagram labels are: 1. Support box; 11. Workbench; 12. Waste storage bin; 13. Horizontal frame; 14. Mounting port; 15. Support block;

[0048] 2. Bottom template; 21. Through opening;

[0049] 3. Cutting mechanism; 31. Support legs; 32. Horizontal plate; 33. Hydraulic cylinder;

[0050] 34. Positioning plate; 35. Connecting seat; 36. Cutting tray; 37. Air hole; 38. Air nozzle;

[0051] 39. Positioning frame; 310. Pressure plate; 311. Pad;

[0052] 312. Vertical rod; 313. Spring;

[0053] 314. Air pump; 315. Rubber piston; 316. Piston rod; 317. Threaded rod; 318. First check valve; 319. Air inlet pipe; 320. Filter screen; 321. Second check valve; 322. Air outlet pipe;

[0054] 4. Static eliminator mechanism; 41. First mounting bracket; 42. Static eliminator rod; 43. Left and right adjustment screw; 44. Smooth rod; 45. First motor; 46. Slide; 47. Second mounting bracket; 48. Pulley;

[0055] 5. Feeding mechanism; 51. Third mounting frame; 52. Rotating shaft; 53. Conductive rubber roller; 54. Second motor; 55. Gear. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0057] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0058] Please see Figures 1 to 13 The present invention provides an integrated stamping device and process for the handle hole of a biodegradable plastic bag. The integrated stamping device for the handle hole of a biodegradable plastic bag includes a support box 1, a bottom template 2, a cutting mechanism 3, an electrostatic elimination mechanism 4, and a feeding mechanism 5.

[0059] For support box 1,

[0060] Please see Figures 1 to 3 The upper end of the support box 1 is fixed with a workbench 11, and a waste storage bin 12 is placed inside. Two parallel horizontal frames 13 are also fixed on the upper end of the workbench 11 along the length direction. The space between the two horizontal frames 13 is a channel for conveying plastic bags. An installation port 14 is also opened on the workbench 11 at the position corresponding to the waste storage bin 12. Multiple support blocks 15 are integrally connected to the inner wall of the installation port 14.

[0061] It should be noted that the upper part of the support box 1 is a workbench 11, which is used to transport and cut plastic bags. Inside it is a waste storage bin 12, which corresponds to the position of the installation port 14 and can be used to collect the cut slices.

[0062] For bottom template 2

[0063] Please see Figure 3 The bottom template 2 is embedded inside the mounting port 14 and mounted on the support block 15. It is also fixed to the support block 15 by bolts. The bottom template 2 has a through-hole 21 that limits the cutting size.

[0064] It should be noted that the bottom template 2 has a through-hole 21 to limit the shape and size of the handle hole after cutting. The bottom template 2 and the workbench 11 are detachably connected, so the bottom template 2 can be removed and replaced. For example, the through-hole 21 on the bottom template 2 after replacement will be of different sizes, so as to be able to adapt to plastic bags of different sizes.

[0065] The cutting mechanism 3 includes two sets of support legs 31 bolted to the upper end of the workbench 11. A horizontal plate 32 is bolted between the two sets of support legs 31 and is mounted on the upper part of the workbench 11 along the width direction of the workbench 11. A hydraulic cylinder 33 is installed on the upper end of the horizontal plate 32. The extension end of the hydraulic cylinder 33 is vertically downward. The mechanism also includes a cutting component, a positioning component, and an air supply component.

[0066] Please see Figures 4 to 7 The cutting assembly includes a connecting seat 35, which has a cavity inside. A positioning plate 34 is welded and fixed to the upper end. The positioning plate 34 is connected to the output flange of the hydraulic cylinder 33. The lower end is bolted to a cutting disc 36 with a corresponding through-hole 21. An air hole 37 communicating with the cavity is opened on the cutting disc 36. An air nozzle 38 communicating with the cavity is installed on the upper end of the positioning plate 34.

[0067] It should be noted that in the cutting mechanism 3, the hydraulic cylinder 33 is used as the main driving device, and the cutting component is installed at the output end of the hydraulic cylinder 33 so that the hydraulic cylinder 33 can drive the cutting component to move and cut the plastic bag.

[0068] For the cutting assembly, the connecting seat 35 is the main structure, and the upper end has a positioning plate 34. The positioning plate 34 is connected to the output flange of the hydraulic cylinder 33, so it can also be disassembled to replace the corresponding cutting mechanism according to the replaced bottom template 2. The lower end of the connecting seat 35 has a cutting disc 36, which is used as a cutter to cut out the handle hole.

[0069] The connecting seat 35 has a cavity inside, and the positioning plate 34 has an air nozzle 38. Gas can be injected into the cavity through the air nozzle 38, and the gas can be ejected from the air hole 37 at the lower end of the cutting disc 36. Therefore, after the cutting of the handle hole is completed, if the slice is electrostatically attracted to the lower end of the cutting disc 36, the slice can be blown away by the ejected gas, thus cleaning the slice.

[0070] Please see Figure 5 , Figure 6 and Figure 8 The positioning component includes a positioning frame 39, which is sleeved on the outside of the connecting seat 35. A pressure plate 310 for pressing the plastic bag is integrally connected to the lower end of the positioning frame 39, and a pad 311 is fixed to the lower end of the pressure plate 310 with screws.

[0071] Meanwhile, a vertical rod 312 is welded and fixed to the upper end of the pressure plate 310. The upper end of the vertical rod 312 passes through the positioning plate 34 and is slidably connected to it. A nut is also threadedly connected to it. A spring 313 is sleeved on the vertical rod 312 to press against the pressure plate 310 and the positioning plate 34.

[0072] It should be noted that: the lower end of the positioning frame 39 has a pressure plate 310. The positioning frame 39 is sleeved on the outside of the connecting seat 35. Under normal conditions, the pressure plate 310 is located below the cutting plate 36. Therefore, the pressure plate 310 contacts the plastic bag before the cutting plate 36 and squeezes and fixes the plastic bag during the continuous downward movement. The pad 311 set at the lower end of the pressure plate 310 can increase the squeezing and fixing effect on the plastic bag.

[0073] The vertical rod 312 is welded and fixed to the pressure plate 310, and its upper end passes through the positioning plate 34 and is slidably connected to it. At the same time, it is limited by a nut. Therefore, the positioning frame 39 can move vertically relative to the connecting seat 35. That is, after the pressure plate 310 squeezes the plastic bag, the cutting plate 36 can still continue to move down. The spring 313 can reset the positioning frame 39 and the connecting seat 35 after the cutting is completed.

[0074] The positioning frame 39 is adapted to the shape of the cutting disc 36, thus providing higher precision in defining the plastic bag and further improving the cutting quality.

[0075] Please see Figure 9 and Figure 10 The air supply assembly includes an air cylinder 314 fixed on the pressure plate 310 and a piston rod 316 fixed on the positioning plate 34. The air cylinder 314 is connected to the internal cavity of the connecting seat 35 through the air outlet pipe 322. A rubber piston 315 that slides inside the air cylinder 314 is fixed at one end of the piston rod 316.

[0076] The air cylinder 314 has an air inlet and an air outlet on its outer circumference near the bottom. A first one-way valve 318 is installed at the air inlet, and an air inlet pipe 319 is fixed to the other end of the first one-way valve 318. A filter screen 320 is fixed to the other end of the air inlet pipe 319. A second one-way valve 321 is installed at the air outlet, and an air outlet pipe 322 is fixed to the other end of the second one-way valve 321. The other end is fixed to the air nozzle 38. A threaded rod 317 is fixed to the other end of the piston rod 316. The threaded rod 317 passes through the positioning plate 34 and is fixed by a nut.

[0077] It should be noted that in the air supply assembly, the air cylinder 314 is fixed to the upper end of the pressure plate 310, the piston rod 316 is fixed to the lower end of the positioning plate 34, and the rubber piston 315 is slidably connected to the inside of the air cylinder 314. Therefore, when the cutting disc 36 continues to move downward relative to the pressure plate 310, the piston rod 316 drives the rubber piston 315 to move downward, squeezing the air inside the air cylinder 314. The air enters the air outlet pipe 322 through the second one-way valve 321 and finally enters the cavity to blow away the slices attached to the lower end of the cutting disc 36. Therefore, it can cooperate with the cutting operation to achieve reciprocating air supply.

[0078] The other end of the first one-way valve 318 has an air inlet pipe 319, on which a filter screen 320 is installed, which can be used to filter pollutants in the air.

[0079] For static elimination mechanism 4;

[0080] Please see Figure 11 The static elimination mechanism 4 includes two sets of first mounting frames 41, which are respectively fixed on two cross frames 13, and a static elimination rod 42 is fixed between the two sets of first mounting frames 41.

[0081] A left-right rotating adjusting screw 43 is rotatably connected between two sets of first mounting brackets 41, and a smooth rod 44 parallel to the left-right rotating adjusting screw 43 is also fixed. A first motor 45 is bolted to one set of first mounting brackets 41. The output end of the first motor 45 is fixed to the left-right rotating adjusting screw 43 through a coupling. Two symmetrically arranged slide blocks 46 are also installed on the left-right rotating adjusting screw 43. The left-right rotating adjusting screw 43 drives the two slide blocks 46 to move symmetrically. A second mounting bracket 47 is screwed to the lower end of the slide block 46. A rotatable pulley 48 for positioning the plastic bag is mounted on the second mounting bracket 47 through a shaft.

[0082] It should be noted that the static elimination rod 42 in the static elimination mechanism 4 is located above the workbench 11. When the plastic bag is being transported, the static elimination rod 42 can be used to eliminate the static electricity generated by the plastic bag itself due to friction, which can improve the subsequent cutting effect.

[0083] The two pulleys 48 can abut against the edge of the plastic bag, which can position the plastic bag and limit the distance between the plastic bag and the static elimination rod 42, so that the distance between the two is in the optimal state, and the static elimination effect will be better. At the same time, they can also position the plastic bag during transportation to prevent the conveyor belt from deviating. The two pulleys 48 can be driven to move symmetrically by using the left and right adjustment screw 43 to make targeted adjustments according to the width of the plastic bag itself.

[0084] For feeding mechanism 5;

[0085] Please see Figure 12 and Figure 13 The feeding mechanism 5 includes two sets of third mounting brackets 51, which are respectively fixed on two crossbeams 13. Two parallel rotating shafts 52 are rotatably connected between the two sets of third mounting brackets 51. A conductive rubber roller 53 is fixed on the rotating shaft 52. A second motor 54 is bolted to one of the third mounting brackets 51. The output end of the second motor 54 is fixed to one of the rotating shafts 52 through a coupling. Meshing gears 55 are also fixed on the two rotating shafts 52.

[0086] It should be noted that in the feeding mechanism 5, when the two conductive rubber rollers 53 rotate synchronously, they can transmit the material to the conveyor belt, discharge the static electricity inside the plastic bag, and exert a certain squeezing effect on the plastic bag during the conveying process, making it flatter and resulting in better subsequent cutting and processing.

[0087] A process for integrated stamping of handle holes for biodegradable plastic bags includes:

[0088] S1. One end of the rolled plastic strip enters between two conductive rubber rollers 53 and is conveyed by the rotating conductive rubber rollers 53 until the other end is discharged from the conductive rubber rollers 53 in another feeding mechanism 5, realizing loading and unloading. During the process, the conductive rubber rollers 53 remove static electricity from the plastic bag.

[0089] S2. During the conveying process, the edge of the plastic bag extends between two pulleys 48 for positioning. The static eliminator 42 is located above the plastic bag to further eliminate static electricity in the plastic bag.

[0090] S3. The plastic bag moves to the top of the bottom template 2 and stops. The hydraulic cylinder 33 drives the connecting seat 35 to move down. The pressure plate 310 first contacts and squeezes the plastic bag, and then the cutting plate 36 contacts and cuts the plastic bag.

[0091] S4. When the pressure plate 310 squeezes the plastic strip, the cutting plate 36 can continue to move downward relative to the pressure plate 310. At this time, the piston rod 316 drives the rubber piston 315 to move downward. The air inside the compression cylinder 314 enters the cavity from the air outlet 322 and is ejected through the air hole 37 at the lower end of the cutting plate 36. When ejected, it can blow away the plastic strip slices electrostatically adsorbed at the lower end of the cutting plate 36, so that the slices enter the waste storage bin 12.

[0092] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A punch and hole integrated punching device for biodegradable plastic bags, comprising a support box (1), the upper end of the support box (1) is fixed with a workbench (11), and a waste storage barrel (12) is placed inside, characterized in that, Also include: Cross (13), the cross (13) is parallel to two, along the length of the workbench (11) is provided, and bolted to the workbench (11), two said cross (13) between the channel for conveying plastic bags; Bottom plate (2), the bottom plate (2) can be connected to the workbench (11) and the position corresponding to the waste barrel (12), there is a through hole (21) on the bottom plate (2) to limit the cutting size; Cutting mechanism (3), the cutting mechanism (3) includes cutting assembly, positioning assembly and gas supply assembly; The cutting assembly includes a connecting seat (35), the connecting seat (35) has a cavity inside, the upper end is welded and fixed with a positioning plate (34), the lower end is bolted with a cutting disc (36) corresponding to the through hole (21), the cutting disc (36) is provided with a gas hole (37) communicating with the cavity; The positioning assembly includes a positioning frame (39), the positioning frame (39) is sleeved outside the connecting seat (35) and is elastically connected with the connecting seat (35), so that the positioning frame (39) can move vertically relative to the connecting seat (35), the lower end of the positioning frame (39) is integrally connected with a pressure disc (310) for pressing the plastic bag; The gas supply assembly includes a gas cylinder (314) fixed on the pressure disc (310) and a piston rod (316) fixed on the positioning plate (34), the gas cylinder (314) is connected with the cavity inside the connecting seat (35) through the gas outlet pipe (322), one end of the piston rod (316) is fixed with a rubber piston (315) sliding in the gas cylinder (314), when the positioning frame (39) moves vertically relative to the connecting seat (35), the rubber piston (315) moves synchronously in the gas cylinder (314), for pumping or injecting gas into the cavity; Static elimination mechanism (4), the static elimination mechanism (4) is installed on the cross (13), including the erection of the channel, the static elimination rod (42) is arranged along the width direction of the workbench (11); Feeding mechanism (5), the feeding mechanism (5) is two groups, symmetrically installed on the cross (13) and close to the end position, the feeding mechanism (5) includes two conductive rubber rollers (53) distributed above and below, the two conductive rubber rollers (53) have a gap for passing through the plastic bag.

2. The punch integrated press device for biodegradable plastic bag handle according to claim 1, wherein, The workbench (11) is provided with a mounting hole (14) corresponding to the position of the waste barrel (12), the inner wall of the mounting hole (14) is integrally connected with a plurality of supporting blocks (15), the bottom plate (2) is embeddedly installed in the mounting hole (14) and is arranged on the supporting blocks (15), and is further bolted to the supporting blocks (15).

3. The punch integrated press device for biodegradable plastic bag handle according to claim 1, wherein, The cutting mechanism (3) further comprises two groups of support legs (31) bolted to the upper end of the workbench (11), two groups of the support legs (31) are bolted with a horizontal plate (32) arranged above the workbench (11) and along the width direction of the workbench (11), the upper end of the horizontal plate (32) is provided with a hydraulic cylinder (33), the telescopic end of the hydraulic cylinder (33) vertically faces downward and is connected with the flange of the positioning plate (34).

4. The punch integrated puncher for biodegradable plastic bag according to claim 3, wherein The upper end of the positioning plate (34) is provided with an air nozzle (38) communicating with the cavity.

5. The punch integrated press device for biodegradable plastic bag handle according to claim 1, wherein, The upper end of the pressure plate (310) is further welded with a vertical rod (312), the upper end of the vertical rod (312) penetrates the positioning plate (34) and is slidably connected therewith, and is further threadedly connected with a nut, a spring (313) abutting against the pressure plate (310) and the positioning plate (34) is sleeved on the vertical rod (312), and in normal state, the pressure plate (310) is located below the cutting disc (36) and contacts the plastic bag prior to the cutting disc (36); The lower end of the pressure plate (310) is screw-fixed with a backing plate (311).

6. The punch integrated press device for biodegradable plastic bag handle according to claim 1, wherein, The circumferential outer wall of the air cylinder (314) and the position close to the bottom are provided with an air inlet and an air outlet, a first one-way valve (318) is installed at the air inlet, the other end of the first one-way valve (318) is fixed with an air inlet pipe (319), the other end of the air inlet pipe (319) is fixed with a filter screen (320), a second one-way valve (321) is installed at the air outlet, the air outlet pipe (322) is fixed at one end of the second one-way valve (321) and the other end is fixed with the air nozzle (38); The other end of the piston rod (316) is fixed with a threaded rod (317), the threaded rod (317) penetrates the positioning plate (34) and is fixed by a nut.

7. The punch integrated press device for biodegradable plastic bag handle according to claim 1, wherein, The static elimination mechanism (4) further comprises two groups of first mounting frames (41), two groups of the first mounting frames (41) are respectively fixed on the two horizontal frames (13), and the static elimination rod (42) is fixed between the two groups of first mounting frames (41); A left-right rotation adjusting screw rod (43) is rotatably connected between the two groups of first mounting frames (41), and a light rod (44) parallel to the left-right rotation adjusting screw rod (43) is fixed, one group of the first mounting frames (41) is bolted with a first motor (45), the output end of the first motor (45) is fixed with the left-right rotation adjusting screw rod (43) through a shaft coupling, two symmetrically arranged sliding seats (46) are installed on the left-right rotation adjusting screw rod (43), the two sliding seats (46) are symmetrically moved by the left-right rotation adjusting screw rod (43), a second mounting frame (47) is screw-fixed at the lower end of the sliding seat (46), and the second mounting frame (47) is rotatably provided with a pulley (48) for positioning the plastic bag through a shaft.

8. The punch integrated press device for biodegradable plastic bag handle according to claim 1, wherein, The feeding mechanism (5) further comprises two groups of third mounting frames (51), two groups of the third mounting frames (51) are fixed on two cross frames (13) respectively, two parallel arranged rotating shafts (52) are rotatably connected between the two groups of third mounting frames (51), the conductive rubber rollers (53) are fixed on the rotating shafts (52), one group of the third mounting frames (51) is further bolted with a second motor (54), the output end of the second motor (54) is fixed with one of the rotating shafts (52) through a shaft coupling, the two rotating shafts (52) are further fixed with meshing gears (55).

9. The punch integrated stamping process for biodegradable plastic bags as claimed in claim 1-8 wherein, Comprise: S1, one end of the plastic belt in roll shape enters between two conductive rubber rollers (53), and is conveyed by the conductive rubber rollers (53) in rotating state until the other end is guided out from the conductive rubber rollers (53) in another feeding mechanism (5), so as to realize feeding and discharging, and the conductive rubber rollers (53) walk backward in the plastic bag during the process to eliminate static electricity; S2, the edge of the plastic bag during conveying extends between two pulleys (48), the pulleys (48) are used for positioning, and the static electricity eliminating rod (42) is located above the plastic bag and is used for further eliminating static electricity in the plastic bag; S3, the plastic bag moves to stop above the bottom mold plate (2), the connecting seat (35) is driven to move downward by the hydraulic cylinder (33), the pressure plate (310) first contacts and extrudes the plastic bag, and then the cutting disc (36) contacts the plastic bag and cuts; S4, when the pressure plate (310) extrudes the plastic belt, the cutting disc (36) can continue to move downward relative to the pressure plate (310), at this time, the piston rod (316) drives the rubber piston (315) to move downward, the air in the air cylinder (314) enters the cavity from the air outlet pipe (322), and is sprayed out through the air hole (37) at the lower end of the cutting disc (36), when the air is sprayed out, the plastic sheet cut by the cutting disc (36) at the lower end can be blown off, so that the plastic sheet enters the waste storage barrel (12).

Citation Information

Patent Citations

  • A kind of punching device and punching process for handle hole of degradable plastic bag

    CN114789583B