A packaging film perforating device

Abstract

The utility model relates to a kind of packaging film punching device, comprising: base and the punching mechanism being set on the base, the base is equipped with the membrane hole extending along its length direction;The punching mechanism includes lifting drive part, moving plate, punch needle and air pipe, the lifting drive part is located above the membrane hole, the moving plate is connected with the output end of the lifting drive part, the punch needle and air pipe are all set on the moving plate;The punch needle is movably arranged in the base and can be inserted into the membrane hole, one end of the air pipe is connected with the punch needle and communicates, the other end is connected with air blowing equipment;The base is also provided with the discharge port corresponding with the punch needle.

Description

Technical Field

[0001] This utility model relates to the field of film production, and more specifically, to a perforation device for packaging film. Background Technology

[0002] Packaging films, such as cling film, stretch film, and breathable food storage bags, often require perforation during production to impart specific functions, such as breathability and water permeability. Currently, the industry commonly uses mechanical perforation devices, whose core components typically include one or more perforating needles driven by a drive mechanism to reciprocate up and down, thereby piercing the packaging film and creating through holes. However, when the perforating needles penetrate the film, some debris may adhere to their surface, affecting the diameter and shape of subsequent perforations. Furthermore, if debris accumulates inside the equipment, it can cause wear and tear, increase equipment failure rates, and disrupt production continuity. Utility Model Content

[0003] In view of this, the present invention provides a packaging film punching device that can effectively remove waste debris.

[0004] The objective of this utility model is achieved through the following technical solution: A packaging film punching device includes: a base and a punching mechanism disposed on the base, wherein the base has a film-penetrating hole extending along its length; the punching mechanism includes a lifting drive, a moving plate, a punching needle, and an air blowing pipe, wherein the lifting drive is located above the film-penetrating hole, the moving plate is connected to the output end of the lifting drive, and the punching needle and the air blowing pipe are both disposed on the moving plate; the punching needle is movably disposed on the base and can extend into the film-penetrating hole, one end of the air blowing pipe is connected and communicates with the punching needle, and the other end is connected to an air blowing device; the base also has a discharge port corresponding to the punching needle.

[0005] In the above technical solution, the packaging film punching device integrates the punching mechanism on the base. The punching needle on the moving plate is driven by the lifting drive to perform the punching operation. At the same time, the air blowing pipe is connected to the punching needle. After the punching needle completes the punching action, the air blowing pipe can blow air to the punching point with the help of the connected air blowing equipment. This can promptly blow away the waste generated during the punching process and discharge it from the outlet. This avoids waste residue remaining on the packaging film or inside the device, which would affect the punching quality. It ensures the cleanliness of the packaging film, improves the quality of the packaging film, and also reduces the wear and tear on the device caused by the accumulation of debris, thus extending the service life of the device.

[0006] Optionally, in one possible implementation, the lifting drive includes a mounting bracket and a cylinder, the mounting bracket being disposed on the base, the cylinder being vertically mounted upside down on the mounting bracket, and the output shaft of the cylinder being connected to the moving plate.

[0007] In the above technical solution, the cylinder is vertically inverted, so that the cylinder body itself is rigidly fixed to the mounting bracket, with only the output shaft extending downwards to drive the moving plate. This layout significantly reduces the overall mass and center of gravity of the moving parts, reducing inertial impact and swaying during lifting and lowering, thereby ensuring the smoothness and accuracy of the movement of the drilling needle and air pipe, and making the drilling position more accurate. At the same time, it can also effectively save space.

[0008] Optionally, in one possible implementation, the punching needle has a through hole that runs coaxially through it along its axial direction, and the through hole forms a blowing channel for gas to pass through.

[0009] In the above technical solution, the air blowing channel and the perforation needle are coaxially arranged, ensuring that the high-pressure airflow can accurately act on the tip of the perforation needle, effectively avoiding debris residue on the surface of the packaging film or around the perforation needle, and ensuring the cleanliness of the packaging film and the perforation quality. At the same time, integrating the air blowing function inside the perforation needle eliminates the need for a separate air blowing pipeline on the device to guide the gas to the perforation area, simplifying the structure.

[0010] Optionally, in one possible implementation, one end of the punching needle is connected to one end of the air blowing tube via an elastic sealing plug; the sealing plug has a mating hole for the punching needle and the air blowing tube to be inserted, and achieves a seal through an interference fit.

[0011] In the above technical solution, the elastic sealing plug utilizes its material deformation capability to fit tightly with both the punching needle and the air blowing tube through an interference fit. This effectively prevents high-pressure gas leakage at the connection point and ensures that all airflow can be guided into the air blowing channel inside the punching needle, maintaining the efficiency of the chip removal function. The elastic sealing plug has a certain degree of elasticity; when installing the punching needle and air blowing tube, simply insert them into the mating hole of the sealing plug to complete the connection, making the operation simple and convenient.

[0012] Alternatively, in one possible implementation, the end of the punch needle away from the moving plate is provided with a cutting edge, the cutting edge being formed by two symmetrical bevels to create an inverted "V" shaped tip.

[0013] In the above technical solution, the inverted "V" shaped blade forms a sharp tip, which can concentrate stress with a very small contact area at the moment of contact with the packaging film. This can significantly reduce the impact force required for puncture, making the punching action lighter and faster, reducing equipment energy consumption and overall compression deformation of the film.

[0014] Optionally, in one possible implementation, the movable plate is provided with multiple sets of corresponding perforating needles and air blowing pipes, and the discharge port is matched with the multiple sets of perforating needles and air blowing pipes and used to recycle membrane waste.

[0015] In the above technical solution, multiple sets of corresponding punching needles and air blowing pipes are set on the moving plate. This allows for simultaneous punching and waste removal at multiple locations on the packaging film in a single operation cycle. This significantly increases the film area processed per unit time, substantially improving overall production efficiency, and is particularly suitable for mass production of packaging films.

[0016] Optionally, in one possible implementation, there are multiple perforation mechanisms, which are spaced apart along the length direction of the perforation hole.

[0017] In the above technical solution, multiple punching mechanisms can work synchronously and in parallel. When the wide packaging film passes through the perforation hole, all activated punching mechanisms operate simultaneously, completing the punching process of the entire width of the film material in one go. This greatly shortens the total time required for punching and improves overall production efficiency.

[0018] Optionally, in one possible implementation, the air blowing device is connected to a main air pipe, and the air blowing pipe in each of the punching mechanisms is connected to the main air pipe, and the air blowing pipe is connected to the air blowing device through the main air pipe.

[0019] In the above technical solution, a main air pipe serves as the air source bus, from which airflow is distributed to each air blowing pipe. This ensures that the blowing pressure and flow rate reaching each drilling needle are basically consistent. This provides uniform and reliable chip removal power to all drilling points, avoiding situations where some holes are not cleaned properly due to air pressure differences, while other air is wasted.

[0020] Optionally, in one possible implementation, the punch is detachably mounted on the movable plate, which has a screw hole, and the punch is threadedly connected to the screw hole.

[0021] In the above technical solution, when the punching needle is worn, damaged, or needs to be replaced with a punching needle of different specifications to meet the punching requirements of different packaging films, the detachable design allows the operator to quickly remove the punching needle from the moving plate; at the same time, the threaded connection has a certain self-locking property, and during normal operation, the punching needle is not easy to loosen due to equipment vibration or external force. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of one embodiment.

[0024] Figure 2 This is a schematic diagram of the assembly structure of a movable plate and a punch pin in one embodiment.

[0025] Figure 3 This is a schematic diagram of the bottom of the movable plate in one embodiment.

[0026] Figure 4 This is a schematic diagram of the bottom of the base in one embodiment.

[0027] Reference numerals: 1-base; 11-perforation hole; 12-outlet; 2-drilling mechanism; 21-lifting drive; 211-mounting bracket; 212-cylinder; 22-moving plate; 221-elastic sealing plug; 23-drilling needle; 231-through hole; 232-blade; 24-air blowing pipe; 3-main air pipe. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0030] Please refer to Figure 1 This embodiment provides a packaging film punching device, including: a base 1 and a punching mechanism 2 disposed on the base 1. The base 1 is provided with a film-penetrating hole 11 extending along its length direction. The punching mechanism 2 includes a lifting drive 21, a moving plate 22, a punching needle 23, and an air blowing pipe 24. The lifting drive 21 is located above the film-penetrating hole 11. The moving plate 22 is connected to the output end of the lifting drive 21. The punching needle 23 and the air blowing pipe 24 are both disposed on the moving plate 22. The punching needle 23 is movably disposed on the base 1 and can extend into the film-penetrating hole 11. One end of the air blowing pipe 24 is connected to and communicates with the punching needle 23, and the other end is connected to an air blowing device. The base 1 is also provided with a discharge port 12 corresponding to the punching needle 23.

[0031] In this embodiment, the packaging film punching device integrates the punching mechanism 2 onto the base 1. The punching needle 23 on the moving plate 22 is driven by the lifting drive component 21 to perform the punching operation. At the same time, the air blowing pipe 24 is connected to the punching needle 23. After the punching needle 23 completes the punching action, the air blowing pipe 24 can blow air to the punching point with the help of the connected air blowing device. This can promptly blow away the waste generated during the punching process and discharge it from the discharge port 12. This avoids waste residue remaining on the packaging film or inside the device, which would affect the punching quality. It ensures the cleanliness of the packaging film, improves the quality of the packaging film, reduces wear caused by the accumulation of debris, and extends the service life of the device.

[0032] In this embodiment, the lifting drive component 21 includes a mounting frame 211 and a cylinder 212. The mounting frame 211 is disposed on the base 1, and the cylinder 212 is vertically mounted upside down on the mounting frame 211, with its output shaft connected to the moving plate 22. Specifically, the mounting frame 211 includes a mounting plate and multiple mounting columns. The mounting plate is fixed above the upper surface of the base 1 by the multiple mounting columns, and the cylinder 212 is fixed on the mounting plate with its output shaft passing through the mounting plate.

[0033] By vertically inverting the cylinder 212, the cylinder body itself is rigidly fixed to the mounting bracket 211, with only the output shaft extending downwards to drive the moving plate 22. This layout significantly reduces the overall mass and center of gravity of the moving parts, minimizing inertial impact and swaying during lifting and lowering, thereby ensuring the smoothness and precision of the movement of the punching needle 23 and the air blowing pipe 24, resulting in more accurate punching positions. Simultaneously, it effectively saves space.

[0034] As another implementation method, an electric linear actuator can be used instead of cylinder 212. An electric linear actuator is an electrically driven device that converts the rotational motion of an electric motor into the linear reciprocating motion of a linear actuator. It achieves the lifting function by using an internal screw and nut mechanism to convert the rotation of the motor into the linear motion of the linear actuator.

[0035] Please refer to Figure 2 In this embodiment, the punching needle 23 has a through hole 231 coaxially extending along its axial direction, forming an air blowing channel for gas passage. The air blowing channel is coaxially arranged with the punching needle 23, ensuring that the high-pressure airflow can precisely act on the tip of the punching needle 23, effectively preventing debris residue on the packaging film surface or around the punching needle 23, thus guaranteeing the cleanliness of the packaging film and the punching quality. Simultaneously, integrating the air blowing function inside the punching needle 23 eliminates the need for a separate air blowing pipe 24 to guide gas to the punching area, simplifying the structure.

[0036] In this embodiment, one end of the punching needle 23 is connected to one end of the air blowing tube 24 through an elastic sealing plug 221; the sealing plug has a mating hole for the punching needle 23 and the air blowing tube 24 to be inserted, and the seal is achieved by interference fit.

[0037] The elastic sealing plug 221 utilizes the deformability of its material to fit tightly against both the punch 23 and the air blowing tube 24 via an interference fit. This effectively prevents high-pressure gas leakage at the connection point and ensures that all airflow is directed into the air blowing channel inside the punch 23, maintaining the effectiveness of the chip removal function. The elastic sealing plug 221 has a certain degree of elasticity; when installing the punch 23 and the air blowing tube 24, simply insert them into the mating hole of the sealing plug to complete the connection, making the operation simple and convenient.

[0038] The elastic sealing plug 221 can be made of common materials such as rubber, resulting in low manufacturing costs. Simultaneously, the elastic properties of the elastic sealing plug 221 provide it with a certain degree of shock absorption and cushioning. During device operation, the punching needle 23 and the air blowing pipe 24 may be subjected to certain vibrations and impacts. The sealing plug can absorb some of this energy, reducing the impact of vibrations and impacts on the punching needle 23, the air blowing pipe 24, and the entire device, thus extending the service life of components and improving the stability and reliability of the device.

[0039] In this embodiment, the end of the punch 23 away from the moving plate 22 is provided with a cutting edge 232, which is formed by two symmetrical bevels to create an inverted "V" shaped tip.

[0040] The inverted "V" shaped blade 232 forms a sharp tip, which can concentrate stress with a very small contact area at the moment of contact with the packaging film. This can significantly reduce the impact force required for puncture, making the punching action lighter and faster, reducing equipment energy consumption and overall compression deformation of the film.

[0041] Furthermore, the 232-shaped blade allows for a smoother and more precise punching process. The inverted "V"-shaped tip guides the film to tear along a specific direction as it penetrates the packaging film, creating a more regular hole edge. This reduces burrs and irregular tears, improving the quality and aesthetics of the holes and ensuring the sealing and appearance quality of the packaging film for subsequent use.

[0042] Please refer to Figure 3 and Figure 4In this embodiment, the movable plate 22 is provided with multiple sets of corresponding perforating needles 23 and air blowing pipes 24. The discharge port 12 is matched with the multiple sets of perforating needles 23 and air blowing pipes 24 and is used to recycle membrane material waste. Specifically, in this embodiment, the multiple sets of perforating needles 23 and air blowing pipes 24 are respectively arranged on opposite sides near the movable plate 22 and are evenly arranged in two rows. Correspondingly, each perforating mechanism 2 can correspond to two strip-shaped discharge ports 12, that is, each row of perforating needles 23 corresponds to one discharge port 12.

[0043] Multiple sets of corresponding punching needles 23 and air blowing pipes 24 are set on the moving plate 22, so that punching and waste removal operations can be performed on multiple positions of the packaging film simultaneously in one operation cycle. This greatly increases the area of ​​film material processed per unit time, significantly improves the overall production efficiency, and is especially suitable for the mass production of packaging film.

[0044] It should be noted that there are multiple perforation mechanisms 2, which are spaced apart along the length of the perforation hole 11. These multiple perforation mechanisms 2 can work synchronously and in parallel. When the wide packaging film passes through the perforation hole 11, all activated perforation mechanisms 2 operate simultaneously, completing the perforation of the entire wide film material in one go. This significantly reduces the total time required for perforation and improves overall production efficiency.

[0045] In this embodiment, the air blowing device is connected to the main air pipe 3, and the air blowing pipe 24 in each punching mechanism 2 is connected to the main air pipe 3. The air blowing pipe 24 is connected to the air blowing device through the main air pipe 3.

[0046] By using a main air pipe 3 as the air supply bus, and then distributing the airflow from this bus to each blowing pipe 24, it can be ensured that the blowing pressure and flow rate reaching each drilling needle 23 are basically consistent. This provides uniform and reliable chip removal power for all drilling points, avoiding situations where some holes are not cleaned properly due to air pressure differences, while other gas is wasted. The main air pipe 3, as the hub of gas transmission, can stabilize air pressure and distribute gas evenly. The gas output from the blowing equipment first enters the main air pipe 3, where it is buffered and balanced, so that each blowing pipe 24 connected to the main air pipe 3 can receive a relatively stable and uniform gas supply.

[0047] Alternatively, as another implementation, the main air pipe 3 can be omitted, and each punching mechanism 2 can be equipped with an independent air blowing device or a small air source, with the air blowing pipe 24 of each punching mechanism 2 directly connected to its respective air blowing device. In this way, the gas supply of each punching mechanism 2 is completely independent and is not affected by other punching mechanisms 2.

[0048] It should be noted that in this embodiment, the punching needle 23 is detachably mounted on the movable plate 22, which has a screw hole, and the punching needle 23 is threadedly connected to the screw hole. When the punching needle 23 is worn, damaged, or needs to be replaced with a different specification punching needle 23 to meet different packaging film punching requirements, the detachable design allows the operator to quickly remove the punching needle 23 from the movable plate 22; at the same time, the threaded connection has a certain degree of self-locking, and during normal operation, the punching needle 23 is not easily loosened due to equipment vibration or external force.

[0049] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0051] 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 perforation device for packaging film, characterized in that, include: A base and a punching mechanism disposed on the base, wherein the base has a membrane-penetrating hole extending along its length; the punching mechanism includes a lifting drive, a moving plate, a punching needle, and an air blowing pipe, wherein the lifting drive is located above the membrane-penetrating hole, the moving plate is connected to the output end of the lifting drive, and the punching needle and the air blowing pipe are both disposed on the moving plate; the punching needle is movably disposed through the base and can extend into the membrane-penetrating hole, one end of the air blowing pipe is connected and communicates with the punching needle, and the other end is connected to an air blowing device; the base also has a discharge port corresponding to the punching needle.

2. The packaging film punching device according to claim 1, characterized in that, The lifting drive component includes a mounting bracket and a cylinder. The mounting bracket is disposed on the base, and the cylinder is vertically mounted upside down on the mounting bracket, with the output shaft of the cylinder connected to the moving plate.

3. The packaging film punching device according to claim 1, characterized in that, The punching needle has a through hole that runs coaxially through it along its axis, and the through hole forms a blowing channel for gas to pass through.

4. The packaging film punching device according to claim 1, characterized in that, One end of the punching needle is connected to one end of the air blowing tube by an elastic sealing plug; the sealing plug has a mating hole for the punching needle and the air blowing tube to be inserted, and a seal is achieved by interference fit.

5. The packaging film punching device according to claim 1, characterized in that, The punching needle has a cutting edge at one end away from the moving plate, and the cutting edge is formed by two symmetrical bevels to create an inverted "V" shaped tip.

6. The packaging film punching device according to claim 1, characterized in that, The movable plate is provided with multiple sets of corresponding punching needles and air blowing pipes, and the discharge port is matched with multiple sets of punching needles and air blowing pipes and is used to recycle membrane material waste.

7. The packaging film perforation device according to claim 1, characterized in that, There are multiple perforation mechanisms, and the multiple perforation mechanisms are spaced apart along the length direction of the perforation hole.

8. The packaging film perforation device according to claim 7, characterized in that, The air blowing device is connected to a main air pipe, and the air blowing pipe in each of the punching mechanisms is connected to the main air pipe. The air blowing pipe is connected to the air blowing device through the main air pipe.

9. The packaging film punching device according to claim 1, characterized in that, The punch is detachably mounted on the movable plate, which has a screw hole, and the punch is threadedly connected to the screw hole.

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