Punching device for plastic packaging bag processing

Abstract

The utility model discloses a punching device for processing a plastic packaging bag, which comprises a machine body frame, and a punching mechanism and two groups of symmetrically distributed transmission blowing mechanisms are arranged above the machine body frame; the transmission end of the hydraulic cylinder is fixedly connected with a mounting plate, the lower end of the mounting plate is fixedly provided with a right stamping tool bit, the outer side of the stamping tool bit is provided with a spring body, the spring body drives the lower end to be sequentially connected with a pressing ring and a cushion, and the total length of the spring body is larger than that of the stamping tool bit; the supporting frame is fixed to the side edge of the mounting plate and connected with the transmission screw, the transmission screw is in threaded connection with the transmission fan, the transmission fan is fixed to the supporting column through the first thrust bearing, the second thrust bearing, the first supporting rod and the second supporting rod, and the supporting column is fixed to the machine body frame. According to the punching device for plastic packaging bag machining, through the elastic buffering design of the punching mechanism and the power recovery design of the transmission blowing mechanism, the hole position precision and waste blocking problems are synchronously solved, the production efficiency is greatly improved, and the maintenance cost is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of plastic packaging bag processing, specifically a punching device for processing plastic packaging bags. Background Technology

[0002] Plastic packaging bag processing uses polyethylene, polypropylene and other resin granules as the core raw materials. After mixing, the mixture is fed into an extruder to melt. The melt is extruded through a ring die and blown into a cylindrical film, which is then cooled and shaped into a base film. The base film is then printed with graphics using gravure / flexographic printing, cut to specifications, and heat-sealed and cut into functional bags such as flat bags and vest bags by a bag making machine. Finally, after passing quality inspections such as sealing and load-bearing capacity, the bags are packaged. Punching in plastic packaging bag processing refers to the process of mechanically punching specific positions on the formed bag body using a punching machine to create functional holes such as handles, vents, or tear openings.

[0003] Patent application CN202220378981.3 discloses a punching device for processing plastic packaging bags, which "includes an outer shell, a processing table installed inside the outer shell, a material feeding hole provided on the processing table, a first electric push rod corresponding to the processing table installed inside the outer shell, a punching head adapted to the material feeding hole installed at the telescopic end of the first electric push rod, and a second electric push rod installed on the outer shell, a clamping ring adapted to the punching head installed at the telescopic end of the second electric push rod." The beneficial effect of this utility model is that by setting the second electric push rod and the clamping ring in cooperation, the punching position of the packaging bag can be clamped and fixed, preventing the packaging bag from being damaged during punching. To address the issue of process deviation and ensure punching quality, a waste bin is installed to collect punching waste, avoiding subsequent manual cleaning. A slider and chute facilitate the sliding of the waste bin, improving operational convenience. Based on a search of the aforementioned patents and an analysis of existing plastic bag processing techniques, it was found that punching operations result in the removal of large amounts of plastic waste, which can accumulate and cause blockages, requiring machine shutdown for cleaning. Furthermore, the plastic film is prone to localized stretching and deformation during punching, leading to hole displacement. Therefore, this invention designs a punching device for plastic bag processing to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a punching device for processing plastic packaging bags, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A punching device for processing plastic packaging bags includes a machine frame. A punching mechanism and two symmetrically distributed transmission blowing mechanisms are located above the machine frame. The punching mechanism includes a hydraulic cylinder, a mounting plate, a punching head, a spring body, a pressure ring, a buffer pad, a carrier plate, a docking groove, and a cylinder support. The transmission end of the hydraulic cylinder is fixedly connected to the mounting plate. A right punching head is fixedly mounted on the lower end of the mounting plate. A spring body is provided on the outer side of the punching head. The spring body drives the lower end to connect sequentially to the pressure ring and the buffer pad. The total length of the spring body is greater than that of the punching head. The carrier plate is fixed to the inner wall of the machine frame and has a docking groove. The groove is connected to the stamping cutter head; the transmission blowing mechanism includes a support frame, a transmission screw, a transmission fan, a first thrust bearing, a first bearing sleeve, a first support rod, a second thrust bearing, a second bearing sleeve, a second support rod, a support column, a waste collection hopper, and a collection box. The support frame is fixed to the side of the mounting plate and connected to the transmission screw. The transmission screw is threadedly connected to the transmission fan. The transmission fan is fixed to the support column via the upper and lower first thrust bearings, the second thrust bearing, the first support rod, and the second support rod. The support column is fixed to the machine frame. The waste collection hopper is located below the carrier plate and connected to the collection box.

[0007] Optionally, the spring body, pressure ring, and buffer pad constitute a pre-tightening assembly, wherein the buffer pad contacts the plastic film before the stamping head.

[0008] Optionally, the downward movement of the transmission screw drives the transmission fan to rotate counterclockwise to generate an upward airflow, and the upward movement drives the transmission fan to rotate clockwise to generate a downward airflow.

[0009] Optionally, the first support rod and the second support rod are respectively fixed to the first thrust bearing and the second thrust bearing by the first bearing sleeve and the second bearing sleeve.

[0010] Optionally, the cylinder support is a rectangular structure, with one end fixed to the hydraulic cylinder and the other end connected to the top of the machine frame.

[0011] Optionally, the pressure ring is a metal ring structure, and the buffer pad is made of elastic rubber.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this utility model, a stamping mechanism is provided. The pre-compression system composed of the spring body and the buffer pad can eliminate local tensile deformation of the film, greatly improve the neatness of the hole edge, and effectively reduce the hole position offset. The combination design of the pressure ring metal structure and the rubber buffer pad reduces the material damage rate compared with the traditional rigid compression method.

[0014] 2. In this utility model, a transmission blowing mechanism is provided, which uses the reciprocating motion of the hydraulic cylinder to drive the fan to rotate in both directions, so as to achieve zero energy consumption for waste removal; the symmetrically arranged dual-fan system forms a covering airflow, which effectively removes waste. Attached Figure Description

[0015] Figure 1 This is a three-dimensional front view structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model from a frontal view.

[0017] Figure 3 This is a three-dimensional top view of the structure of this utility model;

[0018] Figure 4 This is a three-dimensional sectional view of the structure of this utility model. Figure 1 ;

[0019] Figure 5 This is a three-dimensional left-side view structural schematic diagram of the present invention;

[0020] Figure 6 This is a three-dimensional sectional view of the structure of this utility model. Figure 2 ;

[0021] Figure 7 This is a three-dimensional sectional view of the structure of this utility model. Figure 3 ;

[0022] Figure 8 This utility model Figure 4 A magnified three-dimensional structural diagram of point A in the middle;

[0023] Figure 9 This utility model Figure 7 A magnified three-dimensional structural diagram of point B in the middle.

[0024] In the diagram: 1. Machine frame; 2. Stamping mechanism; 201. Hydraulic cylinder; 202. Mounting plate; 203. Stamping cutter head; 204. Spring body; 205. Pressure ring; 206. Buffer pad; 207. Carrier plate; 208. Connecting groove; 209. Cylinder body bracket; 3. Transmission blowing mechanism; 301. Support frame; 302. Transmission screw; 303. Transmission fan; 304. First thrust bearing; 305. First bearing sleeve; 306. First support rod; 307. Second thrust bearing; 308. Second bearing sleeve; 309. Second support rod; 310. Support column; 311. Waste collection hopper; 312. Collection box. Detailed Implementation

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-9In this embodiment of the present invention, a punching device for processing plastic packaging bags includes a machine frame 1. A punching mechanism 2 and two symmetrically distributed transmission blowing mechanisms 3 are provided above the machine frame 1. The punching mechanism 2 includes a hydraulic cylinder 201, a mounting plate 202, a punching cutter head 203, a spring body 204, a pressure ring 205, a buffer pad 206, a carrier plate 207, a docking groove 208, and a cylinder support 209. The transmission end of the hydraulic cylinder 201 is fixedly connected to the mounting plate 202. The lower end of the mounting plate 202 is fixedly mounted with the right punching cutter head 203. A spring body 204 is provided on the outer side of the punching cutter head 203. The spring body 204 drives the lower end to connect sequentially to the pressure ring 205 and the buffer pad 206. The total length of the spring body 204 is greater than that of the punching cutter head 203. The carrier plate 207 is fixed to the inner wall of the machine frame 1 and is provided with a docking groove 208. The slot 208 is inserted into the stamping cutter head 203; the transmission blowing mechanism 3 includes a support frame 301, a transmission screw 302, a transmission fan 303, a first thrust bearing 304, a first bearing sleeve 305, a first support rod 306, a second thrust bearing 307, a second bearing sleeve 308, a second support rod 309, a support column 310, a waste collection hopper 311, and a collection box 312. The support frame 301 is fixed to the side of the mounting plate 202 and connected to the transmission screw 302. The transmission screw 302 is threadedly connected to the transmission fan 303. The transmission fan 303 is fixed to the support column 310 through the upper and lower first thrust bearings 304, second thrust bearings 307, first support rods 306, and second support rods 309. The support column 310 is fixed to the machine frame 1; the waste collection hopper 311 is located below the carrier plate 207 and connected to the collection box 312.

[0029] The piston rod of the hydraulic cylinder 201 is connected to the mounting plate 202. A stamping cutter head 203 is mounted on the lower part of the mounting plate 202. A spring body 204 is fitted around the outer circumference of the cutter head, with a free length 15mm longer than the cutter head. A stainless steel pressure ring 205 and a 3mm thick silicone buffer pad 206 are sequentially connected to the lower end of the spring body 204. The carrier plate 207 has a mating groove 208 with a diameter matching that of the stamping cutter head 203.

[0030] The support frame 301 is welded to the side of the mounting plate 202, driving the transmission screw 302 to move linearly. The transmission fan 303 achieves its rotation function through the first thrust bearing 304 and the second thrust bearing 307. The bearings are fixed to the support column 310 by the first bearing sleeve 305 and the second bearing sleeve 308. The waste collection hopper 311 is located below the carrier plate 207 and is used to collect plastic waste. A collection box 312 is provided at the lower end of the waste collection hopper 311.

[0031] The working principle of this utility model is as follows: This device uses a hydraulic cylinder 201 to drive the mounting plate 202 to achieve linkage control of punching and waste removal. When the hydraulic cylinder 201 pushes down, the mounting plate 202 drives the punching head 203 to move down. At this time, the spring body 204 pushes the pressure ring 205 so that the buffer pad 206 first contacts the film to complete the pre-compression. Then, the punching head 203 penetrates the film and enters the docking groove 208 of the carrier plate 207. In this process, the spring body 204, pressure ring 205 and buffer pad 206 of the buffer assembly offset the material deformation, effectively reducing the hole position offset. Simultaneously, the support frames 301 on both sides of the mounting plate 202 push the transmission screw 302 down, and drive the transmission fan 303 to rotate counterclockwise through the threaded pair to generate ineffective upward airflow. When the hydraulic cylinder 201 returns, the transmission screw 302 pulls up to make the transmission fan 303 rotate clockwise, generating downward airflow, which blows the waste on the surface of the carrier plate 207 into the collection box 312 through the waste collection hopper 311, effectively removing the waste. Two symmetrically distributed transmission blowing mechanisms 3 achieve bidirectional rotational stability through the first thrust bearing 304 and the second thrust bearing 307, while the support column 310 ensures structural rigidity.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A punching device for processing plastic packaging bags, comprising a machine frame (1), characterized in that: The machine frame (1) is provided with a stamping mechanism (2) and two sets of symmetrically distributed transmission blowing mechanisms (3) above it; the stamping mechanism (2) includes a hydraulic cylinder (201), a mounting plate (202), a stamping cutter head (203), a spring body (204), a pressure ring (205), a buffer pad (206), a carrier plate (207), a docking groove (208), and a cylinder support (209). The transmission end of the hydraulic cylinder (201) is fixedly connected to the mounting plate (202). The lower end of the stamping cutter head (202) is fixedly installed with a right stamping cutter head (203). A spring body (204) is provided on the outer side of the stamping cutter head (203). The spring body (204) drives the lower end to connect the pressure ring (205) and the buffer pad (206) in sequence. The total length of the spring body (204) is greater than that of the stamping cutter head (203). The carrier plate (207) is fixed to the inner wall of the machine frame (1) and is provided with a docking groove (208). The docking groove (208) is inserted into the stamping cutter head (203). The transmission blowing mechanism (3) includes a support frame (301), a transmission screw (302), a transmission fan (303), a first thrust bearing (304), a first bearing sleeve (305), a first support rod (306), a second thrust bearing (307), a second bearing sleeve (308), a second support rod (309), a support column (310), a waste collection hopper (311), and a collection box (312). The support frame (301) is fixed to the side of the mounting plate (202) and connected to... A drive screw (302) is connected to a drive fan (303) by a thread. The drive fan (303) is fixed to a support column (310) by upper and lower first thrust bearings (304), second thrust bearings (307), first support rods (306), and second support rods (309). The support column (310) is fixed to the machine frame (1). The waste collection hopper (311) is located below the carrier plate (207) and connected to the collection box (312).

2. The punching device for processing plastic packaging bags according to claim 1, characterized in that: The spring body (204), the pressure ring (205), and the buffer pad (206) constitute a pre-compression assembly, wherein the buffer pad (206) contacts the plastic film before the stamping head (203).

3. The punching device for processing plastic packaging bags according to claim 1, characterized in that: The drive screw (302) moves downward to drive the drive fan (303) to rotate counterclockwise and generate an upward airflow, and moves upward to drive the drive fan (303) to rotate clockwise and generate a downward airflow.

4. The punching device for processing plastic packaging bags according to claim 1, characterized in that: The first support rod (306) and the second support rod (309) fix the first thrust bearing (304) and the second thrust bearing (307) respectively through the first bearing sleeve (305) and the second bearing sleeve (308).

5. The punching device for processing plastic packaging bags according to claim 1, characterized in that: The cylinder support (209) is a rectangular structure, with one end fixed to the hydraulic cylinder (201) and the other end connected to the top of the machine frame (1).

6. The punching device for processing plastic packaging bags according to claim 1, characterized in that: The pressure ring (205) is a metal ring structure, and the buffer pad (206) is made of elastic rubber.

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