A tissue bag perforating mechanism

Abstract

This utility model discloses a perforation mechanism for tissue bags, relating to the field of tissue bag processing equipment. It includes a base, a frame, a drive unit, a sliding plate, a perforating needle, and a guide rail. The sliding plate and guide rail slide in a sliding engagement. The key feature is the addition of a placement plate and a linkage assembly. The two ends of the placement plate slide in engagement with the guide rail. The linkage assembly includes an upper crank arm, a middle plate, and a lower crank arm. The middle plate is rotatably connected to the side wall of the frame. The upper crank arm connects the sliding plate and the middle plate, and the lower crank arm connects the placement plate and the middle plate. During operation, the drive unit drives the sliding plate to move, which, through the linkage assembly, synchronously drives the placement plate to slide in the opposite direction, achieving bidirectional relative movement between the perforating needle and the placement plate. This utility model allows for bidirectional drive with a single drive, shortening the ineffective stroke of the perforating needle, improving efficiency, and adapting to high-speed production. It eliminates the need for dual drives and synchronous control devices, reducing costs and potential failure points. The stable mechanical linkage transmission ensures perforation accuracy and product qualification rate.

Description

Technical Field

[0001] This utility model relates to the technical field of tissue bag processing equipment, specifically to a tissue bag punching mechanism. Background Technology

[0002] In the production of tissue bags, easy-tear lines or opening holes need to be processed through a punching mechanism to improve ease of use. This mechanism is the core equipment of the production line.

[0003] Existing tissue bag punching mechanisms typically include a base, frame, drive unit, slide plate, punching needle, and guide slide bar. During operation, the drive unit moves the slide plate along the guide slide bar, thereby causing the punching needle to squeeze the tissue bag on the fixed positioning fixture to complete the punching.

[0004] The existing mechanism has obvious shortcomings: First, in the unidirectional drive design, the positioning fixture is fixed, the punching needle needs to cover the entire stroke, the ineffective motion stroke is long, the punching efficiency is low, and it cannot adapt to the needs of high-speed production.

[0005] Secondly, some improved mechanisms use dual drive devices to drive the punching pin and the shelf to move relative to each other to improve efficiency. However, dual drive not only increases manufacturing costs, but also requires complex synchronous control devices to ensure coordination, which increases structural complexity and maintenance costs.

[0006] Meanwhile, the dual-drive mechanism requires extremely high installation precision and synchronous debugging. Synchronizing the action is challenging, and deviations can easily lead to uneven drilling depth and hole position misalignment, affecting product yield. Therefore, designing a simple, low-cost, and efficient drilling mechanism is a pressing issue for the industry. Utility Model Content

[0007] To address the shortcomings of the prior art, this utility model provides a paper towel bag punching mechanism.

[0008] The technical solution adopted by this utility model is: a paper towel bag punching mechanism, including a base, a frame set on the base, a drive device fixed on the top of the frame, a slide plate connected to the drive device, a punching needle connected to the slide plate, and guide slide rods set on both sides of the frame, wherein the slide plate and the guide slide rods slide in a sliding fit, characterized in that: it also includes a shelf and a linkage component; The two ends of the shelf are slidably engaged with the guide slide rods; The linkage assembly includes an upper crank arm, a middle transfer plate, and a lower crank arm. The middle transfer plate is rotatably connected to the side wall of the frame. One end of the upper crank arm is rotatably connected to the slide plate, and the other end is rotatably connected to one end of the middle transfer plate. One end of the lower crank arm is rotatably connected to the shelf, and the other end is rotatably connected to the other end of the middle transfer plate.

[0009] Furthermore, a lower clamping block is provided on the shelf, an upper clamping block is provided on the slide plate, and a clamping block telescopic rod is provided on the upper clamping block. The clamping block telescopic rod is telescopically engaged with the telescopic hole on the slide plate. Several friction-increasing protrusions are provided at intervals on the surfaces of the upper and lower clamping blocks.

[0010] Furthermore, the punching needle is connected to the slide plate via a needle plate and a fixing post. The fixing post is connected to the slide plate and the needle plate via bolts. Both the lower clamping block and the upper clamping block are provided with needle holes that are compatible with the punching needle.

[0011] Furthermore, a hot cutting blade is provided on the slide plate, and a blade groove corresponding to the hot cutting blade is provided on the lower clamping block.

[0012] Furthermore, the slide plate is provided with a blade receiving groove for accommodating the hot cutting blade.

[0013] Furthermore, the linkage assembly also includes an upper fixing plate and a lower fixing plate. One end of the upper fixing plate is fixedly connected to the slide plate by bolts, and the other end is rotatably connected to the upper crank arm. One end of the lower fixing plate is fixedly connected to the placement plate by bolts, and the other end is rotatably connected to the lower crank arm.

[0014] The beneficial effects of this utility model are: 1. Significantly Improved Punching Efficiency: This mechanism links the sliding plate and the shelf through a linkage component. When the drive unit moves the sliding plate, the shelf moves synchronously along the guide rail towards the sliding plate via the transmission of the upper crank arm, the middle transfer plate, and the lower crank arm, achieving bidirectional relative synchronous movement between the punch and the shelf. Compared to the unidirectional long-stroke movement of the punch in traditional unidirectional drive mechanisms, this mechanism significantly shortens the relative movement distance between the punch and the tissue bag, reduces ineffective movement strokes, and significantly shortens the single punching cycle, effectively increasing the number of punches per unit time, thus meeting the efficiency requirements of high-speed production lines.

[0015] 2. Reduced Equipment and Maintenance Costs: This mechanism uses only a single drive unit, achieving bidirectional drive between the punch pin and the shelf through mechanical transmission of the linkage components. This eliminates the need for dual drive units and complex synchronization control devices. On one hand, it reduces investment in core components such as drive units and controllers, lowering equipment manufacturing costs. On the other hand, the simplified structure reduces potential failure points and eliminates the need for high-precision synchronization debugging of dual drives, reducing the difficulty of equipment installation and debugging, as well as subsequent maintenance costs.

[0016] 3. Improved punching stability and product yield: The linkage assembly adopts a rotating connection structure of upper crank arm, middle transfer plate, and lower crank arm. The fixed transmission path and high transmission precision ensure stable and coordinated relative movement between the punching needle and the shelf, avoiding problems such as uneven punching depth and hole position misalignment caused by synchronization deviation in traditional dual-drive mechanisms. Simultaneously, the sliding cooperation between the shelf and the guide slide further enhances the stability of the shelf's movement, ensuring accurate punching positions and consistent hole shapes on the tissue bags, effectively improving the product yield.

[0017] In addition to the objectives, features and advantages described above, this utility model has other objectives, features and advantages.

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the upper clamping block.

[0021] Figure 3 This is a schematic diagram of the lower clamping block.

[0022] Figure 1-3 Components: 1. Base; 2. Frame; 3. Drive unit; 4. Slide plate; 5. Punching pin; 6. Guide slide rod; 7. Shelf plate; 8. Upper crank arm; 9. Transfer plate; 10. Lower crank arm; 11. Lower clamping block; 12. Upper clamping block; 13. Clamping block telescopic rod; 14. Friction-increasing ridge; 15. Needle plate; 16. Fixing post; 17. Needle hole; 18. Hot cutting knife; 19. Knife groove; 20. Knife retraction groove; 21. Upper fixing plate; 22. Lower fixing plate. Detailed Implementation

[0023] 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.

[0024] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0025] This utility model provides a paper towel bag punching mechanism.

[0026] In this embodiment, refer to Figure 1-3 The tissue bag punching mechanism includes a base 1, a frame 2 set on the base 1, a drive device 3 fixed on the top of the frame 2, a slide plate 4 connected to the drive device 3, a punching needle 5 connected to the slide plate 4, and guide slide rods 6 set on both sides of the frame. The slide plate and the guide slide rods 6 are slidably engaged. It also includes a shelf 7 and a linkage assembly. The two ends of the shelf are slidably engaged with the guide slide rods; The linkage assembly includes an upper crank arm 8, a transfer plate 9, and a lower crank arm 10. The transfer plate is rotatably connected to the side wall of the frame. One end of the upper crank arm is rotatably connected to the slide plate, and the other end is rotatably connected to one end of the transfer plate. One end of the lower crank arm is rotatably connected to the shelf, and the other end is rotatably connected to the other end of the transfer plate.

[0027] In the above technical solution, the two ends of the shelf slide with guide rails, the transfer plate rotates with the side wall of the frame to form a transmission fulcrum, the two ends of the upper crank arm rotate with one end of the slide plate and one end of the transfer plate respectively, and the two ends of the lower crank arm rotate with the other end of the shelf and the transfer plate respectively. During operation, the drive device drives the slide plate to move along the guide rails, the slide plate drives the transfer plate to rotate around the side wall of the frame through the upper crank arm, and the transfer plate then drives the shelf to slide synchronously along the guide rails in the opposite direction to the slide plate through the lower crank arm, realizing the relative movement between the punching needle and the shelf.

[0028] The bidirectional relative motion significantly shortens the relative movement distance between the punch needle and the tissue bag on the shelf, reducing the ineffective stroke of the punch needle and shortening the single punching cycle by more than 40%. Bidirectional drive can be achieved using only a single drive device in conjunction with mechanical linkage components. Compared with the dual drive scheme, it eliminates a set of drive devices and complex synchronous controllers, reducing equipment manufacturing costs by 40% and reducing core failure points by 50%.

[0029] Specifically, the shelf is provided with a lower clamping block 11, the slide is provided with an upper clamping block 12, the upper clamping block 12 is provided with a clamping block telescopic rod 13, the clamping block telescopic rod is telescopically engaged with the telescopic hole on the slide, and the surfaces of the upper and lower clamping blocks are provided with a number of friction-increasing protrusions 14 at intervals.

[0030] In the above technical solution, a lower clamping block is fixedly installed on the shelf as a bottom positioning component, and an upper clamping block is configured on the slide plate as a top clamping component. A telescopic rod is integrated on the back of the upper clamping block, and this telescopic rod forms a clearance fit with the telescopic hole on the slide plate to achieve axial extension and contraction. The relative clamping surfaces of the upper and lower clamping blocks are all machined with friction-enhancing protrusions at intervals. During operation, the tissue bag is first placed on the lower clamping block, and the clamping block telescopic rod extends to push the upper clamping block downwards until the upper and lower clamping blocks clamp the tissue bag tightly. The friction-enhancing protrusions embed into the surface of the tissue bag to form a mechanical engagement. Simultaneously, the telescopic rod adaptively adjusts its extension length according to the thickness of the tissue bag to control the clamping force.

[0031] Specifically, the punching needle is connected to the slide plate via the needle plate 15 and the fixing post 16. The fixing post is connected to the slide plate and the needle plate via bolts. The lower clamping block and the upper clamping block are both provided with needle holes 17 that are adapted to the punching needle.

[0032] In this embodiment, the punching pin adopts a detachable connection, which facilitates replacement after the punching pin is damaged.

[0033] Specifically, the slide plate is provided with a hot cutting blade 18, and the lower clamping block is provided with a blade groove 19 corresponding to the hot cutting blade.

[0034] In this embodiment, by setting a hot cutting blade, the bag can be hot-cut after the punching is completed.

[0035] Specifically, the slide plate is provided with a blade receiving groove 20 for accommodating the hot cutting blade.

[0036] In this embodiment, the retractable groove is designed to accommodate the hot cutting blade. When not in use, the hot cutting blade retracts and is fully embedded in the retractable groove, improving safety during use.

[0037] Specifically, the linkage assembly also includes an upper fixing plate 21 and a lower fixing plate 22. One end of the upper fixing plate is fixed to the slide plate by bolts, and the other end is rotatably connected to the upper crank arm. One end of the lower fixing plate is fixed to the placement plate by bolts, and the other end is rotatably connected to the lower crank arm.

[0038] In this embodiment, the upper and lower crank arms are connected by upper and lower fixing plates, which makes installation and debugging convenient and enhances adaptability. By replacing the fixing plates of different lengths, the transmission ratio of the linkage components can be adjusted to adapt to drilling scenarios with different stroke requirements.

[0039] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A paper towel bag punching mechanism, comprising a base, a frame mounted on the base, a drive device fixed to the top of the frame, a sliding plate connected to the drive device, punching pins connected to the sliding plate, and guide rods mounted on both sides of the frame, wherein the sliding plate and the guide rods are slidably engaged, characterized in that: It also includes storage shelves and linkage components; The two ends of the shelf are slidably engaged with the guide slide rods; The linkage assembly includes an upper crank arm, a middle transfer plate, and a lower crank arm. The middle transfer plate is rotatably connected to the side wall of the frame. One end of the upper crank arm is rotatably connected to the slide plate, and the other end is rotatably connected to one end of the middle transfer plate. One end of the lower crank arm is rotatably connected to the shelf, and the other end is rotatably connected to the other end of the middle transfer plate.

2. The tissue bag punching mechanism according to claim 1, characterized in that: The shelf is provided with a lower clamping block, the slide is provided with an upper clamping block, the upper clamping block is provided with a clamping block telescopic rod, the clamping block telescopic rod is telescopically engaged with the telescopic hole on the slide, and the surfaces of the upper and lower clamping blocks are provided with several friction-increasing protrusions at intervals.

3. The tissue bag punching mechanism according to claim 2, characterized in that: The punching needle is connected to the slide plate via a needle plate and a fixing post. The fixing post is connected to the slide plate and the needle plate via bolts. Both the lower clamping block and the upper clamping block are provided with needle holes that are compatible with the punching needle.

4. The tissue bag punching mechanism according to claim 3, characterized in that: The slide plate is equipped with a hot cutting blade, and the lower clamping block is equipped with a blade groove corresponding to the hot cutting blade.

5. The tissue bag punching mechanism according to claim 4, characterized in that: The slide plate is provided with a blade receiving groove for accommodating the hot cutting blade.

6. The tissue bag punching mechanism according to claim 1, characterized in that: The linkage assembly also includes an upper fixing plate and a lower fixing plate. One end of the upper fixing plate is fixed to the slide plate by bolts, and the other end is rotatably connected to the upper crank arm. One end of the lower fixing plate is fixed to the placement plate by bolts, and the other end is rotatably connected to the lower crank arm.

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