Punching device for bag making production line

Abstract

This utility model relates to a punching device for a bag-making production line, comprising a mounting base plate; a punching assembly is provided on the mounting base plate, the punching assembly including a sliding base, a lower base plate, a positioning block, a positioning groove, side columns, a top plate, a punching cylinder, a punching head, and punching holes. A traction screw is provided on the upper end face of the positioning block, and multiple positioning nuts are provided on the traction screw. The traction screw passes through the top plate and is fixedly connected to the top plate through the positioning nuts. The end face of the punching cylinder away from the telescopic end presses against the lower end face of the top plate. Each corner of the punching cylinder is provided with a connecting rod, the other end of each connecting rod being fixed to the upper end face of the positioning block. The traction screw, through its connection with the positioning block and the threaded engagement of the positioning nuts with the traction screw, pulls upward the portion of the positioning block located above the positioning groove. The connecting rods, through the pressure of the top plate against the punching cylinder, press against the upper end face of the positioning block. This utility model has an ingenious structure and is convenient and practical.

Description

Technical Field

[0001] This utility model relates to the field of punching for bag making production lines, and particularly to a punching device for bag making production lines. Background Technology

[0002] Medical packaging bags serve as crucial packaging carriers for medical devices, sterile dressings, and other medical supplies. Their quality directly impacts the sterility and safety of these supplies. These bags typically require excellent sealing, barrier properties, and sterilization adaptability. To meet sterilization requirements, they often employ a composite structure of a membrane layer and dialysis paper. The dialysis paper allows sterilizing agents to penetrate and achieve sterilization, while the membrane layer forms an effective barrier after sterilization, preventing contamination by external microorganisms.

[0003] In the current medical packaging bag manufacturing process, perforations are required on the film layer used to make the bag body or on the formed bag body according to the usage requirements. When the film layer passes through the guide groove in the guide block, the punching head in the guide groove punches the film layer. However, in the existing technology, during the punching process, with long-term punching, the part of the guide block above the guide groove is prone to deformation, the groove opening is enlarged, and it will cause the punching head to deviate from the punching cut, resulting in friction with the punching cut during the punching process. Long-term offset punching will cause wear on the punching head, thus affecting the overall punching efficiency and punching effect, which is very inconvenient. Summary of the Invention

[0004] The purpose of this invention is to provide a punching device for bag making production lines. It has an ingenious structure that can greatly reduce the deformation of the positioning block during long-term punching, making it highly efficient and convenient.

[0005] The technical solution to achieve the purpose of this utility model is as follows: This utility model has an installation base plate that can be installed on a bag-making production line; the installation base plate is provided with a punching assembly for punching holes in the film layer used for bag making or the formed bag body. The punching assembly includes sliding bases that are slidably disposed on the installation base plate, a lower base plate mounted on each sliding base, a positioning block on the lower base plate, a positioning groove on the positioning block that allows the film layer or bag body to pass through, side columns that are disposed on the lower base plate, a top plate mounted on each side column, a punching cylinder mounted on the top plate, a punching head that is lifted and lowered on the upper bottom surface of the positioning groove under the drive of the punching cylinder and can punch holes in the film layer or bag body, and a punching hole on the lower bottom surface of the positioning groove that corresponds to the punching head. The top plate and bottom plate are parallel and coplanar. A traction screw is provided on the upper surface of the positioning block, and multiple positioning nuts are provided on the traction screw. The positioning nuts are evenly distributed above and below the top plate. The traction screw passes through the top plate and is fixedly connected to the top plate through the positioning nuts. The telescopic end of the stamping cylinder is connected to the stamping head. The end face of the stamping cylinder away from the telescopic end presses against the lower end face of the top plate. Each corner of the stamping cylinder is provided with a connecting rod. The other end of each connecting rod is fixed to the upper end face of the positioning block. The traction screw pulls the part of the positioning block above the positioning groove upward through the connection with the positioning block and the threaded engagement of the positioning nuts with the traction screw. The connecting rods press against the upper end face of the positioning block through the pressure of the stamping cylinder by the top plate.

[0006] Furthermore, the top plate is provided with multiple top grooves arranged parallel to the extension direction of the top plate. The traction screw passes through the top groove and slides within it. The bottom of the positioning block is provided with a positioning slider. The positioning slider is provided with a side screw hole and a side screw rod disposed within the side screw hole. The positioning slider is slidably connected to the lower base plate along the extension direction of the lower base plate. The end face of the stamping cylinder opposite to the telescopic end is provided with a limiting slide rod. The limiting slide rod is slidably connected within the top groove. The positioning block is slidably disposed between the top plate and the lower base plate through the cooperation of the traction screw and the top groove, the sliding cooperation of the limiting slide rod and the top groove, and the sliding cooperation of the positioning slider and the lower base plate. It is fixed between the top plate and the lower base plate through the threaded cooperation of each positioning nut and the traction screw, and the threaded cooperation of the side screw rod and the side screw hole.

[0007] Furthermore, a connecting nut is provided on the upper surface of the positioning block, and the lower end of the traction screw is connected to the positioning block through the cooperation of the connecting nut.

[0008] Furthermore, the positioning block is provided with a limiting lifting groove, and an installation block is slidably mounted in the limiting lifting groove. The punching head is mounted on the lower end face of the installation block. The side wall of the limiting lifting groove is provided with opposing limiting side grooves. The extension direction of each limiting side groove is parallel to the extension direction of the limiting lifting groove. Each limiting side groove and the limiting lifting groove extend from the upper end face of the positioning block to the upper bottom face of the positioning groove. The side wall of the installation block is provided with side sliders corresponding to each limiting side groove. The telescopic end of the punching cylinder is connected to the upper end face of the installation block. The punching head moves up and down and punches holes in the film layer or bag body through the driving of the punching cylinder, the sliding cooperation between the installation block and the limiting lifting groove, and the cooperation between each side slider and the limiting side groove.

[0009] Furthermore, the aforementioned mounting base plate is provided with opposing bottom slide rails and a bottom rack arranged parallel to the bottom slide rails. The extension direction of the bottom slide rails is perpendicular to the lower base plate. The bottom of each sliding base is provided with a bottom slider that is adapted to each bottom slide rail. Each sliding base is fixedly connected by a connecting rod. A rotating rod is also provided between each sliding base, parallel to the connecting rod. One end of the rotating rod is rotatably connected to any sliding base, and the other end of the rotating rod extends out after passing through another sliding base. A rotating handle is provided at the end of the rotating rod that extends out of the sliding base. The rotating rod is also provided with a transmission gear that can be driven and engaged with the bottom rack. Each sliding base is slidably connected to the mounting base plate through the rotation of the rotating rod, the engagement of each bottom slider and the bottom slide rail, and the drive engagement of the transmission gear and the bottom rack.

[0010] This utility model has positive effects: (1) By setting a traction screw and a connecting top rod, this utility model forms an independent two-way force balance. During the punching and drilling process, the traction screw applies a continuous upward traction force to the positioning block, while the connecting top rod applies a downward pressure force to the positioning block through the pressure of the top plate against the punching cylinder. Through the mutual cooperation of the upper and lower parts, it can effectively resist the impact force generated when the inefficient punching head is working, greatly improve the structural rigidity and fatigue strength of the positioning block, thereby fundamentally preventing the deformation and damage caused by metal fatigue in this part, greatly extending the service life of the core component of the punching device, ensuring the long-term stability of the punching quality, and is ingenious, convenient and practical.

[0011] (2) By setting a top slide groove, a positioning slider and a limiting slide rod, the entire punching assembly can be flexibly and precisely slidably adjusted in multiple directions. It can also be easily moved to a predetermined station according to the punching position requirements of different bag types. Then, it can be firmly locked by tightening the positioning nut and the side screw, which greatly improves the versatility and adjustment efficiency of punching. It can meet the production needs of various products without changing the mold or making complex mechanical modifications, saving adjustment time and improving production efficiency.

[0012] (3) By setting a connecting nut on the upper end face of the positioning block, the traction screw is connected to it by thread, which ensures that the upward preload applied by the traction screw can be directly and efficiently transmitted to the positioning block body, avoiding the loosening or force transmission loss that may occur when using other indirect connection methods, and further enhancing the overall stability.

[0013] (4) This utility model provides a high-precision and high-rigidity vertical guide mechanism for the punch head through the cooperation of the limiting lifting groove, the limiting side groove, the mounting block, and the side slider. It can ensure that the punch head moves strictly up and down in a straight line under the drive of the punching cylinder, effectively preventing the slight sway or shaking that may occur during the punching process. It greatly improves the positional accuracy and consistency of the punching, avoids the problems of incomplete punching, increased burrs, or even damage to the film layer caused by punch misalignment, and also reduces the eccentric torque, which helps to protect the punching cylinder and the positioning block and extend their service life.

[0014] (5) This utility model achieves stable, precise and easy operation of a wide range of position adjustment of the entire punching assembly on the mounting base plate by setting the bottom slide rail, bottom rack, transmission gear and rotating rod. By turning the handle, the entire assembly can be driven to move along the production line direction through the gear bottom rack transmission mechanism, and the smoothness of movement can be ensured by the slide rail slider. In addition, the punching device can be flexibly installed at different work positions on the production line according to actual production needs, and the distance between it and other work positions can be quickly adjusted to optimize the production layout, enhance the flexibility and automation of the entire production line, save manpower and time costs, and is efficient and convenient. Attached Figure Description

[0015] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein... Figure 1 This is a schematic diagram of the overall structure of the punching device for the bag making production line in this utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the overall structure of the punching assembly in this utility model; Figure 4 for Figure 3 Sectional view at point B; Figure 5 This is a cross-sectional view of the overall structure of the positioning block in this utility model; The attached figures are labeled as follows: Mounting base plate 1, bottom slide rail 11, bottom rack 12, bottom slider 13, punching assembly 2, punching head 20, mounting block 201, side slider 202, sliding base 21, connecting rod 211, rotating rod 212, transmission gear 213, rotating handle 214, lower base plate 22, positioning block 23, positioning slider 231, side screw 232, limit lifting groove 233, limit side groove 234, positioning groove 24, punching hole 241, side column 25, top plate 26, top slide groove 261, punching cylinder 27, limit slide rod 271, connecting top rod 28, traction screw 29, positioning nut 3, connecting nut 4. Detailed Implementation

[0016] See Figures 1 to 5 This utility model has an installation base plate 1 that can be installed on a bag-making production line. The installation base plate 1 is provided with a punching assembly 2 for punching holes in the film layer used for bag making or the formed bag body. The punching assembly 2 includes a sliding base 21 that is slidably disposed on the installation base plate 1, a lower base plate 22 mounted on each sliding base 21, a positioning block 23 mounted on the lower base plate 22, a positioning groove 24 mounted on the positioning block 23 that allows the film layer or bag body to pass through, side posts 25 that are disposed opposite to each other on the lower base plate 22, a top plate 26 mounted on each side post 25, a punching cylinder 27 mounted on the top plate 26, a punching head 20 that is lifted and lowered on the upper bottom surface of the positioning groove 24 under the drive of the punching cylinder 27 and can punch holes in the film layer or bag body, and a punching hole 241 that is mounted on the lower bottom surface of the positioning groove 24 and corresponds to the punching head 20. The top plate 26 and the lower base plate 22 are flat. The positioning block 23 is arranged in a row and on the same plane. A traction screw 29 is provided on the upper end surface of the positioning block 23. Multiple positioning nuts 3 are provided on the traction screw 29. The positioning nuts 3 are evenly distributed above and below the top plate 26. The traction screw 29 passes through the top plate 26 and is fixedly connected to the top plate 26 through the positioning nuts 3. The telescopic end of the stamping cylinder 27 is connected to the stamping head 20. The end face of the stamping cylinder 27 away from the telescopic end presses against the lower end face of the top plate 26. Each corner of the stamping cylinder 27 is provided with a connecting rod 28. The other end of each connecting rod 28 is fixed to the upper end face of the positioning block 23. The traction screw 29 pulls the part of the positioning block 23 above the positioning groove 24 upward through the connection with the positioning block 23 and the threaded engagement between the positioning nuts 3 and the traction screw 29. The connecting rods 28 press against the upper end face of the positioning block 23 through the pressure of the stamping cylinder 27 by the top plate 26.

[0017] The top plate 26 is provided with a plurality of top sliding grooves 261 arranged parallel to the extending direction of the top plate 26. The traction screw 29 passes through the top sliding grooves 261 and is slidably disposed within the top sliding grooves 261. The bottom of the positioning block 23 is provided with a positioning slider 231. The positioning slider 231 is provided with a side screw hole and a side screw 232 disposed within the side screw hole. The positioning slider 231 is slidably connected to the lower base plate 22 along the extending direction of the lower base plate 22. The end face of the stamping cylinder 27 opposite to the telescopic end is provided with a limiting... The limiting slide rod 271 is slidably connected in the top slide groove 261. The positioning block 23 is slidably disposed between the top plate 26 and the bottom plate 22 through the cooperation of the traction screw 29 with the top slide groove 261, the sliding cooperation of the limiting slide rod 271 with the top slide groove 261, and the sliding cooperation of the positioning slider 231 with the bottom plate 22. It is fixed between the top plate 26 and the bottom plate 22 through the threaded cooperation of each positioning nut 3 with the traction screw 29, and the threaded cooperation of the side screw 232 with the side screw hole.

[0018] The upper surface of the positioning block 23 is provided with a connecting nut 4, and the lower end of the traction screw 29 is connected to the positioning block 23 through the cooperation of the connecting nut 4.

[0019] The positioning block 23 is provided with a limiting lifting groove 233, and a mounting block 201 is slidably mounted within the limiting lifting groove 233. The stamping head 20 is mounted on the lower end face of the mounting block 201. The side wall of the limiting lifting groove 233 is provided with opposing limiting side grooves 234. The extending direction of each limiting side groove 234 is parallel to the extending direction of the limiting lifting groove 233. Each limiting side groove 234 and the limiting lifting groove 233 extend from the upper end face of the positioning block 23. Extending to the upper bottom surface of the positioning groove 24, the side wall of the mounting block 201 is provided with side sliders 202 corresponding to each limiting side groove 234. The telescopic end of the stamping cylinder 27 is connected to the upper end surface of the mounting block 201. The stamping head 20 is driven by the stamping cylinder 27 to move the mounting block 201, the mounting block 201 slides with the limiting lifting groove 233, and the side sliders 202 cooperate with the limiting side groove 234 to move up and down and punch holes in the film layer or bag body.

[0020] The mounting base plate 1 is provided with a bottom slide rail 11 arranged opposite to each other, and a bottom rack 12 arranged parallel to the bottom slide rail 11. The extension direction of the bottom slide rail 11 is perpendicular to the lower base plate 22. The bottom of each sliding base 21 is provided with a bottom slider 13 adapted to each bottom slide rail 11. Each sliding base 21 is fixedly connected by a connecting rod 211. A rotating rod 212 arranged parallel to the connecting rod 211 is also provided between each sliding base 21. One end of the rotating rod 212 is rotatably connected to any sliding base 21, and the other end of the rotating rod 212 extends out after passing through another sliding base 21. A rotating handle 214 is provided at the end of the rotating rod 212 that extends out of the sliding base 21. A transmission gear 213 that can be driven and cooperated with the bottom rack 12 is also provided on the rotating rod 212. Each sliding base 21 is slidably connected to the mounting base plate 1 through the rotation of the rotating rod 212, the cooperation between each bottom slider 13 and the bottom slide rail 11, and the transmission cooperation between the transmission gear 213 and the bottom rack 12.

[0021] The working principle of this utility model is as follows: During use, the mounting base plate 1 is installed on the frame of the bag-making production line. The operator can rotate the handle 214 to drive the rotating rod 212. The lower base plate 22 is adjusted in position through the sliding engagement of the bottom slider 13 and the bottom slide rail 11, and the engagement of the transmission gear 213 and the bottom rack 12. After the lower base plate 22 is adjusted to a suitable distance from other equipment, the handle 214 is turned to stop rotating. Then, the positioning block 23 and the lower base plate 22 are positioned through the rotational engagement of the positioning slider 231 and the lower base plate 22, the sliding engagement of the traction screw 29 and the top slide groove 261, and the engagement of the limiting slide rod 271 and the top slide groove 261. The horizontal position adjustment of the positioning groove 24 allows for easy movement of the punching component 2 to the predetermined station according to the punching position requirements of different bag types. Then, by tightening the positioning nut 3 and the side screw 232, the positioning slider 231 can be firmly locked. Then, the traction screw 29 cooperates with the connecting nut 4, thereby connecting the traction nut with the positioning block 23. The upper end of the traction screw 29 is fixed to the top plate 26 through the cooperation of each positioning nut 3 with the traction screw 29. During the punching process, the traction screw 29 applies a continuous upward traction force to the positioning block 23 through the nut, while the connecting top rod 28 applies a downward pressure to the positioning block 23 through the pressure of the stamping cylinder 27 on the top plate 26. The combined forces of the upper and lower parts effectively resist and offset the enormous impact stress generated when the punch head 20 is working, significantly enhancing the rigidity and fatigue resistance of the structure on the positioning block 23, especially the weak area above the positioning groove 24. This fundamentally prevents deformation and damage to this part due to metal fatigue, greatly extends the service life of the core components of the punching device, ensures the long-term stability of the punching quality, and effectively solves the problem of deformation of the positioning block 23 in the prior art. By greatly reducing the deformation of the positioning block 23, it also avoids affecting the accuracy of the punch head 20 and the punching hole 241 during punching, ensuring the service life of the punch head 20. The structure is ingenious, convenient and practical.

[0022] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A punching device for a bag-making production line, having a mounting base plate that can be installed on the bag-making production line; characterized in that: The mounting base plate is equipped with a punching assembly for punching holes in the film layer used for bag making or the formed bag body. The punching assembly includes sliding bases slidably mounted on the mounting base plate, lower base plates mounted on each sliding base plate, positioning blocks mounted on the lower base plates, positioning grooves on the positioning blocks that allow the film layer or bag body to pass through, side posts mounted on the lower base plates, top plates mounted on each side post, a punching cylinder mounted on the top plate, a punching head that is raised and lowered on the upper bottom surface of the positioning groove under the drive of the punching cylinder and can punch holes in the film layer or bag body, and punching holes on the lower bottom surface of the positioning groove that correspond to the punching head. The top plate and the lower base plate are parallel and coplanar. A traction screw is provided on the upper end face of the top plate, and multiple positioning nuts are provided on the traction screw. The positioning nuts are evenly distributed above and below the top plate. The traction screw passes through the top plate and is fixedly connected to the top plate through the positioning nuts. The telescopic end of the stamping cylinder is connected to the stamping head. The end face of the stamping cylinder away from the telescopic end presses against the lower end face of the top plate. Each corner of the stamping cylinder is provided with a connecting rod. The other end of each connecting rod is fixed to the upper end face of the positioning block. The traction screw pulls the part of the positioning block above the positioning groove upward through the connection with the positioning block and the threaded engagement between the positioning nuts and the traction screw. The connecting rods press against the upper end face of the positioning block through the pressure of the stamping cylinder by the top plate.

2. The punching device for a bag-making production line according to claim 1, characterized in that: The top plate is provided with multiple top grooves arranged parallel to the extension direction of the top plate. The traction screw passes through the top groove and is slidably disposed within the top groove. The bottom of the positioning block is provided with a positioning slider. The positioning slider is provided with a side screw hole and a side screw rod disposed within the side screw hole. The positioning slider is slidably connected to the lower base plate along the extension direction of the lower base plate. The end face of the stamping cylinder opposite to the telescopic end is provided with a limiting slide rod. The limiting slide rod is slidably connected within the top groove. The positioning block is slidably disposed between the top plate and the lower base plate through the cooperation of the traction screw and the top groove, the sliding cooperation of the limiting slide rod and the top groove, and the sliding cooperation of the positioning slider and the lower base plate. It is fixed between the top plate and the lower base plate through the threaded cooperation of each positioning nut and the traction screw, and the threaded cooperation of the side screw rod and the side screw hole.

3. The punching device for a bag-making production line according to claim 2, characterized in that: The upper surface of the positioning block is provided with a connecting nut, and the lower end of the traction screw is connected to the positioning block through the cooperation of the connecting nut.

4. The punching device for a bag-making production line according to claim 3, characterized in that: The positioning block is provided with a limiting lifting groove, and an installation block is slidably mounted in the limiting lifting groove. The punching head is mounted on the lower end face of the installation block. The side wall of the limiting lifting groove is provided with opposing limiting side grooves. The extension direction of each limiting side groove is parallel to the extension direction of the limiting lifting groove. Each limiting side groove and the limiting lifting groove extend from the upper end face of the positioning block to the upper bottom face of the positioning groove. The side wall of the installation block is provided with side sliders corresponding to each limiting side groove. The telescopic end of the punching cylinder is connected to the upper end face of the installation block. The punching head moves up and down and punches holes in the film layer or bag body through the driving of the punching cylinder, the sliding cooperation between the installation block and the limiting lifting groove, and the cooperation between each side slider and the limiting side groove.

5. The punching device for a bag-making production line according to claim 4, characterized in that: The mounting base plate is provided with opposing bottom slide rails and a bottom rack arranged parallel to the bottom slide rails. The extension direction of the bottom slide rails is perpendicular to the bottom base plate. Each sliding base has a bottom slider adapted to each bottom slide rail. Each sliding base is fixedly connected by a connecting rod. A rotating rod is also provided between each sliding base, parallel to the connecting rod. One end of the rotating rod is rotatably connected to any sliding base, and the other end of the rotating rod extends out after passing through another sliding base. The end of the rotating rod extending out of the sliding base is provided with a rotating handle. The rotating rod is also provided with a transmission gear that can be driven and engaged with the bottom rack. Each sliding base is slidably connected to the mounting base plate through the rotation of the rotating rod, the engagement of each bottom slider and bottom slide rail, and the drive engagement of the transmission gear and bottom rack.

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