Punching device for porous plastic bag
By using a cylinder to drive the lifting plate to lower the punching column and the pressing head, and using a spring and a rubber pressing head to press the plastic bag, combined with a ring-shaped punching knife, the problem of inaccurate positioning and inability to punch in some positions in the existing perforated plastic bag punching device is solved, thus achieving precise punching of perforated plastic bags.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN SUN PAK PACKING PROD LTD
- Filing Date
- 2025-04-16
- Publication Date
- 2026-04-21
AI Technical Summary
Existing punching devices for porous plastic bags have problems such as displacement caused by air disturbance during the pressing of the pressure plate mechanism, resulting in inaccurate punching positions and failure to punch in some positions.
The cylinder drives the lifting plate to lower the punching column and the pressing head. The spring and the rubber pressing head press the plastic bag, and the ring-shaped punching knife punches holes precisely. Multiple parts are pressed at the same time by multiple punching columns, springs and pressing heads.
It achieves precision and stability in punching plastic bags, ensuring that every part that needs to be punched can be punched accurately, avoiding positional deviation and missing punches in the covered area.
Smart Images
Figure CN224144846U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of plastic bag processing equipment, and in particular to a punching device for porous plastic bags. Background Technology
[0002] Currently, for some flat boxes containing electronic products, the applicant has designed porous plastic bags for lifting and transporting. The structure of the porous plastic bag is described in [reference needed]. Figure 4 The plastic bag 100 has multiple through holes 101 on its body, allowing gas inside the bag to escape smoothly and preventing the bag from bulging outwards. During the manufacturing process, this porous plastic bag requires a punching device to create these through holes. In existing technology, the punching device currently used includes a pressure plate mechanism, a punch mechanism, and a drive cylinder. The pressure plate mechanism first presses the plastic bag tightly, and then the drive cylinder drives the punch mechanism to punch multiple through holes in the plastic bag. However, the main technical problems with this punching device in the prior art are as follows: First, the pressing area of the pressure plate mechanism is large. When the pressure plate mechanism presses down on the plastic bag, the air between the pressure plate mechanism and the plastic bag will be quickly discharged and form turbulent air. The turbulent air can easily cause the plastic bag to shift, resulting in inaccurate punching position. Second, when the pressure plate mechanism presses down on the plastic bag, a part of the plastic bag is occupied by the pressure plate mechanism, which makes it impossible to punch a hole in this part of the plastic bag. Third, before punching, each punching position cannot be positioned, further leading to inaccurate punching position. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a punching device for a porous plastic bag, which can press down the parts of the plastic bag that need to be punched and can accurately punch each part that needs to be punched.
[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a punching device for porous plastic bags, comprising a first channel plate, a second channel plate, a guide column, a cylinder mounting plate, a lifting plate, a cylinder, a punching column, a spring, and a pressing head; the second channel plate is installed above the first channel plate, and a channel for the plastic bag to pass through is provided between the second channel plate and the first channel plate; the guide column is vertically installed on the second channel plate, the cylinder mounting plate is installed at the upper end of the guide column, and the lifting plate is installed between the cylinder mounting plate and the second channel plate and can rise along the guide column. The cylinder is mounted on a cylinder mounting plate, and its telescopic rod extends downward and connects to the lifting plate. The punching column is vertically arranged, with its upper end connected to the lifting plate and its lower end equipped with a punching cutter. The clamping head is movably mounted outside the lower end of the punching column. The upper end of the spring is connected to the lifting plate, and its lower end is connected to the clamping head. When the spring is not compressed, the lower end of the clamping head is lower than the position of the punching cutter. The first channel plate has a first through hole for inserting the punching cutter, and the second channel plate has a second through hole for the clamping head to pass through.
[0005] In the above technical solution, the punching tool of the punching post is a punching tool with an annular cutting edge, and the first through hole is adapted to the diameter of the punching tool. The clamping head is a rubber clamping head, and a third through hole is provided in the middle of the clamping head. The lower end of the punching post is located inside the third through hole, and the third through hole is adapted to the punching post. The outer side of the clamping head is cylindrical, and the second through hole is adapted to the diameter of the clamping head.
[0006] In the above technical solution, the number of punching posts, springs and clamping heads are 5-15 each, and the number of the first through hole, the second through hole and the third through hole matches the number of punching posts.
[0007] In the above technical solution, a first fixed partition is provided between one end of the first channel plate and one end of the second channel plate, and a second fixed partition is provided between the other end of the first channel plate and the other end of the second channel plate.
[0008] In the above technical solution, there are 4 guide columns and 4 guide sleeves are installed on the lifting plate. The guide columns slide through the corresponding guide sleeves.
[0009] In the above technical solution, a rubber pillow plate is provided on the first channel plate, and the rubber pillow plate is provided with a fourth through hole for the punching knife to pass through, the fourth through hole being adapted to the diameter of the punching knife.
[0010] The beneficial effects of this utility model are as follows: The cylinder of this utility model can drive the lifting plate to rise or fall along the guide column. During the descent of the lifting plate, the lifting plate simultaneously drives the punching column, spring, and pressing head to fall together. The pressing head passes down through the second through hole of the second channel plate. Since the lower end of the pressing head is lower than the position of the punching knife when the spring is not compressed, the lower end of the pressing head first presses on the plastic bag on the upper side of the first channel plate. Then, the lifting plate and the punching column continue to descend, and the spring is compressed by the reaction force of the pressing head. Finally, the punching knife at the lower end of the punching column punches towards the plastic bag and inserts into the first through hole of the first channel plate, punching a hole in the plastic bag. The plastic bag material then falls down from the first through hole. During the ascent of the lifting plate, the lifting plate first drives the punching column to move upward, while the pressing head continues to press the plastic bag under the elastic action of the spring. Then, the lifting plate continues to rise, the elastic force of the spring is released, and the spring and pressing head rise with the lifting plate until they return to the initial position. Therefore, this utility model can use the action of springs and pressing heads to press the parts of the plastic bag that need to be punched, and can accurately punch the parts that need to be punched by the punching blade at the lower end of the punching post; when multiple punching posts, springs and pressing heads are set, each part that needs to be punched can be pressed at the same time, and each part that needs to be punched can be accurately punched. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0012] Figure 2 This is a schematic diagram of the structure of the first channel plate, the second channel plate, and the rubber pillow plate of this utility model.
[0013] Figure 3 This is a partial cross-sectional structural diagram of the first channel plate, the second channel plate, the guide column, the lifting plate, the punched column, the spring, the clamping head, and the rubber pillow plate.
[0014] Figure 4 This is a schematic diagram of the overall structure of a porous plastic bag. Detailed Implementation
[0015] The structural and working principles of this utility model will be further described in detail below with reference to the accompanying drawings.
[0016] like Figure 4 As shown, this is a porous plastic bag manufactured according to the present invention. The plastic bag 100 has multiple through holes 101 on its body. Figures 1-3As shown, this utility model is a punching device for a porous plastic bag, including a first channel plate 1, a second channel plate 2, a guide column 3, a cylinder mounting plate 4, a lifting plate 5, a cylinder 6, a punching column 7, a spring 8, and a pressing head 9; the second channel plate 2 is installed above the first channel plate 1, and a channel 10 for the plastic bag to pass through is provided between the second channel plate 2 and the first channel plate 1; the guide column 3 is vertically installed on the second channel plate 2, the cylinder mounting plate 4 is installed at the upper end of the guide column 3, the lifting plate 5 is installed between the cylinder mounting plate 4 and the second channel plate 2 and can rise or fall along the guide column 3, and the cylinder 6 is installed... The cylinder 6 is mounted on the cylinder mounting plate 4. The cylinder extension rod of the cylinder 6 extends downward and connects to the lifting plate 5. The punching column 7 is vertically arranged. The upper end of the punching column 7 is connected to the lifting plate 5. The lower end of the punching column 7 is provided with a punching knife 71. The pressing head 9 is movably installed outside the lower end of the punching column 7. The upper end of the spring 8 is connected to the lifting plate 5. The lower end of the spring 8 is connected to the pressing head 9. When the spring 8 is not compressed, the lower end of the pressing head 9 is lower than the position of the punching knife 71. The first channel plate 1 is provided with a first through hole 11 for the punching knife 71 to be inserted. The second channel plate 2 is provided with a second through hole 21 for the pressing head 9 to pass through.
[0017] In operation, the plastic bag 100 passes through the channel 10 between the second channel plate 2 and the first channel plate 1. During the punching process, the plastic bag 100 remains temporarily stationary within the channel 10. The cylinder 6 of this invention can drive the lifting plate 5 to rise or fall along the guide column 3. During the descent of the lifting plate 5, it simultaneously drives the punching column 7, the spring 8, and the pressing head 9 to descend together. The pressing head 9 passes down through the second through hole 21 of the second channel plate 2. Since the lower end of the pressing head 9 is lower than the position of the punching cutter 71 when the spring 8 is not compressed, the lower end of the pressing head 9 first presses against the plastic bag on the upper side of the first channel plate 1. Then, the lifting plate 5 and the punching column 7 continue to descend, and the spring 8 is subjected to pressure from the pressing head. The plastic bag is compressed by the reaction force of the punch 7. Finally, the punch 71 at the lower end of the punching column 7 punches the plastic bag and inserts into the first through hole 11 of the first channel plate 1, punching a hole in the plastic bag. The plastic bag material falls down from the first through hole 11. During the process of the lifting plate 5 rising, the lifting plate 5 first drives the punching column 7 to move upward, while the pressing head 9 continues to press the plastic bag under the elastic action of the spring 8. Then, the lifting plate 5 continues to rise, the elastic force of the spring 8 is released, and the spring 8 and the pressing head 9 rise with the lifting plate 5 until they return to the initial position. Therefore, this utility model can use the action of spring 8 and pressing head 9 to press the part of the plastic bag that needs to be punched, and can accurately punch the part that needs to be punched by the punching knife 71 at the lower end of the punching post 7; when multiple punching posts 7, spring 8 and pressing head 9 are set, each part that needs to be punched can be pressed at the same time, and each part that needs to be punched can be accurately punched.
[0018] like Figure 2 and Figure 3 As shown, the punching knife 71 of the punching column 7 is a punching knife 71 with a ring blade, which can punch a round hole in the plastic bag; the diameter of the first through hole 11 is matched with that of the punching knife 71, so that the punching knife 71 can be punched into the first through hole 11, while avoiding the pressing head 9 from being pressed into the first through hole 11.
[0019] like Figure 1 and Figure 3 As shown, the clamping head 9 is a rubber clamping head 9, with a third through hole 91 in the middle. The lower end of the punched post 7 is located inside the third through hole 91, and the third through hole 91 is adapted to the punched post 7, allowing the lower end of the punched post 7 to slide up and down within the third through hole 91. The outer side of the clamping head 9 is cylindrical, and the second through hole 21 is adapted to the diameter of the clamping head 9. The number of punched posts 7, springs 8, and clamping heads 9 are 5-15, and in this embodiment, there are 10. The number of first through holes 11, second through holes 21, and third through holes 91 matches the number of punched posts 7.
[0020] like Figure 1 As shown, a first fixed partition 12 is provided between one end of the first channel plate 1 and one end of the second channel plate 2, and a second fixed partition 13 is provided between the other end of the first channel plate 1 and the other end of the second channel plate 2. By setting the first fixed partition 12 and the second fixed partition 13, the two ends of the first channel plate 1 and the second channel plate 2 can be fixed to each other, and a channel 10 can be formed.
[0021] like Figure 1 As shown, there are four guide columns 3, and four guide sleeves 14 are installed on the lifting plate 5. The guide columns 3 slide through the corresponding guide sleeves 14. The use of four guide columns 3 can make the cylinder mounting plate 4 stable in position, and the use of guide sleeves 14 can make the lifting plate 5 rise and fall stably.
[0022] like Figure 1-3 As shown, a rubber pillow plate 15 is provided on the first channel plate 1. The rubber pillow plate 15 has a fourth through hole 16 for the punching knife 71 to pass through, and the diameter of the fourth through hole 16 is adapted to the diameter of the punching knife 71. By using the rubber pillow plate 15, the pressing head 9 can press the plastic bag onto the rubber pillow plate 15, resulting in greater friction and more stable pressing.
[0023] The above description is merely a preferred embodiment of this utility model. Any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical solution of this utility model shall fall within the scope of the technical solution of this utility model.
Claims
1. A punch device for perforating a porous plastic bag, characterized by: The system includes a first channel plate, a second channel plate, a guide column, a cylinder mounting plate, a lifting plate, a cylinder, a punching column, a spring, and a clamping head. The second channel plate is mounted above the first channel plate, and a channel for a plastic bag to pass through is provided between the second channel plate and the first channel plate. The guide column is vertically mounted on the second channel plate, the cylinder mounting plate is mounted on the upper end of the guide column, the lifting plate is mounted between the cylinder mounting plate and the second channel plate and can rise or fall along the guide column, and the cylinder is mounted on the cylinder mounting plate. The cylinder extension rod extends downward and connects to the lifting plate; the punching column is vertically arranged, with its upper end connected to the lifting plate and its lower end equipped with a punching cutter; the clamping head is movably installed outside the lower end of the punching column; the upper end of the spring is connected to the lifting plate and its lower end is connected to the clamping head; when the spring is not compressed, the lower end of the clamping head is lower than the position of the punching cutter; the first channel plate is provided with a first through hole for the punching cutter to be inserted, and the second channel plate is provided with a second through hole for the clamping head to pass through.
2. The apparatus of claim 1 wherein: The punching tool of the punching column is a punching tool with a ring-shaped cutting edge, and the diameter of the first through hole is adapted to the diameter of the punching tool.
3. The apparatus of claim 2 wherein: The clamping head is a rubber clamping head, and a third through hole is provided in the middle of the clamping head. The lower end of the punching post is located inside the third through hole, and the third through hole is adapted to the punching post. The outer side of the clamping head is cylindrical, and the second through hole is adapted to the diameter of the clamping head.
4. The apparatus of claim 3 wherein: The number of punching pins, springs and clamping heads are 5-15 each, and the number of the first through hole, the second through hole and the third through hole are matched with the number of punching pins.
5. The apparatus of claim 1 wherein: A first fixed partition is provided between one end of the first channel plate and one end of the second channel plate, and a second fixed partition is provided between the other end of the first channel plate and the other end of the second channel plate.
6. The apparatus of claim 1 wherein: The number of guide columns is 4, and 4 guide sleeves are installed on the lifting plate. The guide columns slide through the corresponding guide sleeves.
7. The apparatus of claim 1 wherein: A rubber pillow plate is provided on the first channel plate. The rubber pillow plate has a fourth through hole for the punching knife to pass through, and the diameter of the fourth through hole is matched with that of the punching knife.