Perforating machine for high-absorptivity polyurethane foam dressing

Abstract

The utility model discloses a high-absorptivity polyurethane foam dressing perforating machine, and relates to the technical field of medical dressing production, the high-absorptivity polyurethane foam dressing perforating machine comprises an unwinding mechanism, a perforating mechanism is fixedly installed at the rear end of the unwinding mechanism, a winding frame is fixedly installed at the rear end of the perforating mechanism, and the perforating mechanism comprises a mechanism frame; a lifting air cylinder is fixedly installed at the top end of the mechanism frame, the output end of the lifting air cylinder penetrates through the mechanism frame to be fixedly installed at the top end of a punching plate, and a punching head is fixedly installed at the bottom end of the punching plate. The output end of a lifting air cylinder drives a punching plate to descend, the polyurethane foam dressing is punched under the cooperation of a punching head and a punching groove in a punching rod, then a servo motor is started to drive two sets of lead screws to rotate, the two sets of lead screws drive sliding blocks to move oppositely, two sets of connecting rods drive a movable rod and a through rod to move downwards, and then the polyurethane foam dressing is punched. The interior of the punching head is cleaned, and frequent shutdown for cleaning the punching head is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical dressing production, in particular to a high-absorbency polyurethane foam dressing punching machine. Background Art

[0002] Polyurethane foam dressing is a material commonly used in the medical field, especially for wounds that require high absorbency and good breathability. However, untreated polyurethane foam dressings may not meet the special breathability requirements of some wounds. Therefore, we need a method to improve its breathability, and perforation is one of the effective ways.

[0003] When the punching head of the existing punching machine punches holes in the polyurethane foam dressing, a large amount of fine waste particles will be generated. Due to the softness and elasticity of the polyurethane foam, these waste particles are easily blocked in the internal structure of the punching head, and the blockage will reduce the punching efficiency. Therefore, the punching head needs to be frequently stopped to clean, thereby reducing the overall production efficiency. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, a highly absorbent polyurethane foam dressing punching machine is provided. The technical solution solves the problem that the existing punching machine proposed in the above-mentioned background technology will generate a large number of fine waste particles when the punching head punches holes in the polyurethane foam dressing. Due to the softness and elasticity of the polyurethane foam, these waste particles are easily blocked in the internal structure of the punching head. The blockage will reduce the punching efficiency. Therefore, the punching head needs to be frequently stopped to be cleaned, thereby reducing the overall production efficiency.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is: a highly absorbent polyurethane foam dressing punching machine, comprising an unwinding mechanism, a punching mechanism is fixedly installed at the rear end of the unwinding mechanism, and a winding frame is fixedly installed at the rear end of the punching mechanism;

[0006] The punching mechanism includes a mechanism frame, a lifting cylinder is fixedly installed on the top of the mechanism frame, the output end of the lifting cylinder passes through the mechanism frame and is fixedly installed on the top of the punching plate, a punching head is fixedly installed on the bottom end of the punching plate, a screw rod is arranged inside the punching plate, and the threads on the two groups of screw rods have opposite rotation directions, a servo motor is fixedly installed on the top of the punching plate, the output end of the servo motor is respectively connected to the left and right ends of the two groups of screw rods through two groups of second transmission belts, a slider is threadedly connected to the outer surface of the screw rod, the two groups of sliders are rotatably connected by one end of a connecting rod, and the other end of the connecting rod is rotatably connected to the outer surface of one end of a movable rod, a plurality of through rods are fixedly installed on the bottom end of the movable rod, and the through rods are sleeved inside the punching head.

[0007] Preferably, the unwinding mechanism comprises a frame, a unwinding wheel is rotatably installed at the top of the frame, the output end of a motor is fixedly installed on the left side of the unwinding wheel, and a material passing roller is rotatably installed at the top of the frame.

[0008] Preferably, a winding wheel is rotatably installed at the top of the winding frame, and two brush rods are further arranged inside the winding frame and are symmetrically arranged up and down.

[0009] Preferably, two groups of fixing blocks are fixedly installed on the left and right inner sides of the mechanism frame, a guiding rod is fixedly installed on the two groups of fixing blocks, and a punching plate is slidably connected to the outer surfaces of the four guiding rods.

[0010] Preferably, the motor drives the components to be moved to rotate through six groups of first transmission belts.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model is provided with a punching mechanism. The output end of a lifting cylinder drives the punching plate to descend, and punching of the polyurethane foam dressing is realized through the cooperation of a punching head and a perforation groove on a punching rod. Secondly, by starting a servo motor to drive two groups of lead screws to rotate, the two groups of lead screws drive the sliders to move towards each other, so that the two groups of connecting rods drive a movable rod and a through rod to move downward, realizing cleaning of the inside of the punching head. It is not necessary to frequently stop the machine to clean the punching head, reducing the overall production efficiency and meeting the needs of the staff. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the utility model;

[0014] Figure 2 is a rear view schematic diagram of the utility model;

[0015] Figure 3 is the utility model Figure 2 a sectional view at A in;

[0016] Figure 4 is the utility model Figure 3 an enlarged view at B in.

[0017] The reference numerals in the drawings are:

[0018] 1. Unwinding mechanism; 11. Frame; 12. Unwinding wheel; 13. Motor; 14. First transmission belt; 15. Material passing roller;

[0019] 2. Punching mechanism; 21. Mechanism frame; 22. Lifting cylinder; 23. Punching plate; 24. Punching head; 25. Servo motor; 26. Lead screw; 27. Second transmission belt; 28. Slide block; 29. Connecting rod; 290. Movable rod; 291. Through rod; 292. Fixed block; 293. Guide rod; 294. Punching rod; 295. Perforation groove; 296. Cleaning rod; 297. Scrap box;

[0020] 3. Rewinding frame; 31. Brush rod; 32. Rewinding wheel. Detailed implementation manners

[0021] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0022] Referring to Figure 1 As shown in the figure, the unwinding mechanism 1 includes a frame 11. A unwinding wheel 12 is rotatably installed at the top of the frame 11. The output end of a motor 13 is fixedly installed on the left side of the unwinding wheel 12. The motor 13 drives the components that need to move to rotate through six groups of first transmission belts 14. A material passing roller 15 is rotatably installed at the top of the frame 11. A rewinding wheel 32 is rotatably installed at the top of the rewinding frame 3. Two brush rods 31 are further arranged inside the rewinding frame 3 and are symmetrically arranged up and down.

[0023] In this solution, when the output end of the motor 13 is started and cooperates with one of the first transmission belts 14, the polyurethane foam dressing on the unwinding wheel 12 is conveyed to the punching mechanism 2 through the material passing roller 15. After the punching mechanism 2 finishes punching, the residual waste on the surface of the polyurethane foam dressing is cleaned by the two brush rods 31 arranged symmetrically up and down. Finally, the polyurethane foam dressing is rewound by the rewinding wheel 32, eliminating the need for manual cleaning and meeting the needs of the staff.

[0024] Referring to Figures 2-4As shown, a highly absorbent polyurethane foam dressing punching machine comprises an unwinding mechanism 1, a punching mechanism 2 is fixedly installed at the rear end of the unwinding mechanism 1, and a winding frame 3 is fixedly installed at the rear end of the punching mechanism 2; the punching mechanism 2 comprises a mechanism frame 21, two groups of fixed blocks 292 are fixedly installed on the left and right inner sides of the mechanism frame 21, the two groups of fixed blocks 292 are fixedly installed with guide rods 293, the outer surfaces of the four groups of guide rods 293 are slidably connected with punching plates 23, a lifting cylinder 22 is fixedly installed on the top of the mechanism frame 21, the output end of the lifting cylinder 22 passes through the mechanism frame 21 and is fixedly installed on the top of the punching plate 23, a punching head 24 is fixedly installed on the bottom end of the punching plate 23, a screw rod 26 is arranged inside the punching plate 23, and the threads on the two groups of screw rods 26 have opposite rotation directions, A servo motor 25 is fixedly installed on the top of the punching plate 23, and the output end of the servo motor 25 is respectively connected to the left and right ends of the two groups of screw rods 26 through two groups of second transmission belts 27. The outer surface of the screw rod 26 is threadedly connected with a slider 28. The two groups of sliders 28 are rotatably connected through one end of a connecting rod 29, and the other end of the connecting rod 29 is rotatably connected to the outer surface of one end of a movable rod 290. A plurality of through rods 291 are fixedly installed on the bottom end of the movable rod 290. The through rods 291 are sleeved inside the punching head 24, and a punching rod 294 is rotatably installed below the punching head 24. A plurality of perforation grooves 295 are provided on the punching rod 294, and a cleaning rod 296 is rotatably installed below the punching rod 294. A waste box 297 is provided at the left opening of the mechanism frame 21.

[0025] In this scheme, the punching plate 23 is driven down by the output end of the lifting cylinder 22, and the punching head 24 and the perforation groove 295 on the punching rod 294 cooperate to punch holes in the polyurethane foam dressing. In order to make the punching plate 23 active and stable, the two sides of the punching plate 23 slide on the outer surface of the guide rod 293 at the top of the fixed block 292. Secondly, by starting the servo motor 25 to drive the two groups of screw rods 26 to rotate, the two groups of screw rods 26 drive the slider 28 to move in opposite directions, so that the two groups of connecting rods 29 drive the movable rod 290 and the through rod 291 to move downward, thereby cleaning the inside of the punching head 24. Secondly, the cleaning rod 296 also cleans the perforation groove 295 on the punching rod 294, and there is no need to frequently stop the machine to clean the punching head 24. Finally, the waste box 297 can prevent waste particles from scattering outside the working range, thereby improving the overall production efficiency and meeting the needs of the staff.

[0026] Working principle of the utility model: First, the output end of the starting motor 13 is cooperated with one set of the first transmission belts 14 to convey the polyurethane foam dressing on the unwinding wheel 12 to the punching mechanism 2 through the feeding roller 15. The output end of the lifting cylinder 22 drives the punching plate 23 to descend. The punching of the polyurethane foam dressing is realized by the cooperation of the punching head 24 and the perforation grooves 295 on the punching rod 294. In order to make the punching plate 23 move stably, both sides of the punching plate 23 slide on the outer surface of the guide rod 293 at the top of the fixed block 292. Secondly, by starting the servo motor 25 to drive the two lead screws 26 to rotate, the two lead screws 26 drive the sliders 28 to move towards each other, so that the two connecting rods 29 drive the movable rod 290 and the through rod 291 to move downward, realizing the cleaning of the inside of the punching head 24. Moreover, the cleaning rod 296 also cleans the perforation grooves 295 on the punching rod 294, eliminating the need for frequent shutdowns to clean the punching head 24, reducing the overall production efficiency and meeting the needs of the staff. The polyurethane foam dressing is cleaned of the residual waste on the surface by two brush rods 31 arranged symmetrically up and down. Finally, the winding wheel 32 winds up the polyurethane foam dressing, eliminating the need for manual cleaning, improving the overall production efficiency and meeting the needs of the staff.

[0027] The foregoing has shown and described the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the utility model claimed. The scope of protection claimed by the utility model is defined by the appended claims and their equivalents.

Claims

1. A highly absorbent polyurethane foam dressing punching machine, comprising a reeling mechanism (1), characterized in that: A punching mechanism (2) is fixedly mounted on the rear end of the unwinding mechanism (1), and a rewinding frame (3) is fixedly mounted on the rear end of the punching mechanism (2); The punching mechanism (2) comprises a mechanism frame (21), a lifting cylinder (22) is fixedly mounted on the top of the mechanism frame (21), an output end of the lifting cylinder (22) passes through the mechanism frame (21) and is fixedly mounted on the top of a punching plate (23), a punching head (24) is fixedly mounted on the bottom of the punching plate (23), a screw rod (26) is arranged inside the punching plate (23), the threads on the two groups of screw rods (26) are in opposite directions, a servo motor (25) is fixedly mounted on the top of the punching plate (23), and the punching plate (23) is provided with a screw rod (26). The output end of the servo motor (25) is respectively connected to the left end and the right end of the two groups of screw rods (26) through two groups of second transmission belts (27); the outer surface of the screw rod (26) is threadedly connected with a slider (28); the two groups of sliders (28) are rotatably connected through one end of a connecting rod (29); and the other end of the connecting rod (29) is rotatably connected to the outer surface of one end of a movable rod (290); a plurality of through rods (291) are fixedly installed at the bottom end of the movable rod (290); and the through rods (291) are sleeved inside the punching head (24).

2. A highly absorbent polyurethane foam dressing punching machine according to claim 1, characterized in that: The unwinding mechanism (1) comprises a frame (11), a unwinding wheel (12) is rotatably mounted on the top of the frame (11), an output end of a motor (13) is fixedly mounted on the left side of the unwinding wheel (12), and a material transfer roller (15) is rotatably mounted on the top of the frame (11).

3. A highly absorbent polyurethane foam dressing punching machine according to claim 1, characterized in that: A winding wheel (32) is rotatably mounted on the top of the winding frame (3), and two brush rods (31) are also arranged on the inner side of the winding frame (3) and are symmetrically arranged up and down.

4. A highly absorbent polyurethane foam dressing punching machine according to claim 1, characterized in that: Two groups of fixed blocks (292) are fixedly installed on the left and right inner sides of the mechanism frame (21), the two groups of fixed blocks (292) are fixedly installed with guide rods (293), and the outer surfaces of the four groups of guide rods (293) are slidably connected with punching plates (23).

5. A highly absorbent polyurethane foam dressing punching machine according to claim 1, characterized in that: A punching rod (294) is rotatably mounted below the punching head (24), and a plurality of perforation slots (295) are provided on the punching rod (294). A cleaning rod (296) is rotatably mounted below the punching rod (294). A waste box (297) is provided at the left opening of the mechanism frame (21).

6. A highly absorbent polyurethane foam dressing punching machine according to claim 2, characterized in that: The motor (13) drives the components that need to be moved to rotate via six sets of first transmission belts (14).

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