Online paper ruler adding device and method for medical dressing combined bag

Abstract

The invention discloses a paper ruler online adding device and method for a medical dressing combination bag, and belongs to the technical field of medical dressing production. The device comprises a conveying structure arranged in the front-back direction and two online adding assemblies on the left side and the right side of the conveying structure. Each online adding assembly comprises a mechanical arm, an unwinding structure, a front conveying structure, a tension adjusting structure, a cursor tracking structure, a longitudinal cutting structure, a rear conveying structure, a transverse cutting structure, a shaping conveying structure and N suction cup assemblies. The shaping conveying structure comprises a negative pressure plate; when the narrow paper tape is inwards output to the position above the negative pressure plate, the negative pressure plate does not work; when one paper ruler completely moves to the position above the negative pressure plate, the negative pressure plate works, and the transverse cutting structure works; when the paper ruler falls on the negative pressure plate, the negative pressure plate moves inwards to the inner end; when the negative pressure plate moves to the inner end, the negative pressure plate does not work; when the N suction cup assemblies are in the opposite state and located over the negative pressure plate, the N suction cup assemblies are located over the N paper rulers on the negative pressure plate respectively.

Description

Technical Field

[0001] This invention belongs to the field of medical dressing production technology, and specifically relates to an online paper ruler addition device and method for a medical dressing combination package. Background Technology

[0002] Medical dressing kits may contain a variety of dressings, such as disposable gloves, cotton balls, disposable paper rulers, abdominal pads, or absorbent towels.

[0003] For example, patent application number CN201520648069.5 discloses a disposable PICC puncture kit, including a sealed outer packaging bag. The sealed outer packaging bag contains a disposable impermeable drape, which, from top to bottom, contains a paper ruler, preoperative sterile gloves, a first absorbable drape, an alcohol swab pack, an iodine swab pack, two forceps, two preoperative curved trays, a sterile isolation gown, intraoperative sterile powder-free gloves, a second absorbable drape, sterile sleeves covering the hand and forearm, a perforated drape covering the armpit, a disposable tourniquet, and a... Disposable treatment towels, catheter insertion drapes, sterile gauze, one surgical tray, straight scissors, and sterile adhesive tape. The alcohol cotton ball pack is a sealed package containing cotton balls already soaked in alcohol. The iodine cotton ball pack is a sealed package containing cotton balls already soaked in iodine disinfectant. One end of the sterile sleeve covering the hand and forearm is sealed, while the other end is open. The opening is tightened by an elastic band. The length of the sterile sleeve covering the hand and forearm is the distance from the fingers to the forearm.

[0004] The kit includes a paper ruler; the paper ruler is typically rectangular, made of soft material, and has graduations, and can also be marked with other information (such as wound details based on size). In existing technology, the kit can be produced manually or automatically. Specifically, a conveyor structure is arranged along the front-to-back direction, and multiple workstations are arranged sequentially from front to back alongside the conveyor structure. At each workstation, different components are placed manually or automatically.

[0005] The existing technology for paper rulers involves setting up an online adding structure on each of the left and right sides of the conveying structure. Each online adding structure includes a robotic arm and N suction cups arranged side-by-side. Below the N suction cups are N fixtures, arranged side-by-side. Each fixture has multiple paper rulers stacked vertically to form a paper ruler stack. The suction cups can move vertically and horizontally to transfer one paper ruler from the fixture to the conveying structure. The base plate of the fixture can move up and down in steps to keep the height of the paper ruler stack constant. A spring clip on the top of the fixture ensures that only one paper ruler is removed at a time. However, the applicant found in actual use that due to abnormal spring clips, improper setting, or improper placement of the paper rulers, multiple paper rulers may stick together and be transferred together by the suction cups, resulting in multiple paper rulers in the package. Summary of the Invention

[0006] To address the aforementioned problems, embodiments of the present invention provide an online paper ruler addition device and method for medical dressing kits, wherein each suction cup assembly transfers only one paper ruler. The technical solution is as follows: On one hand, embodiments of the present invention provide an online paper ruler addition device for a medical dressing kit, including a conveying structure arranged in the front-to-back direction and two online addition components on its left and right sides. The conveying structure has multiple receiving slots arranged side-by-side in the front-to-back direction. Each online addition component includes a robotic arm and N suction cup components 89 arranged side-by-side in the front-to-back direction. The robotic arm can move left-to-right and vertically. The online addition component also includes a frame and, from the outside to the inside, a winding structure 2, a front conveying structure 3, a tension adjustment structure 4, a cursor tracking structure 5, and a longitudinal cutting joint, arranged sequentially from the outside to the inside. Structure 6, rear conveying structure 7, cross-cutting structure 8, and shaping conveying structure 9; N suction cup assemblies 89 can move synchronously towards or away from each other in the forward and backward directions; the unwinding structure 2 outputs a wide paper strip 1; the paper rulers on the wide paper strip 1 are arranged in a rectangular array, and N narrow paper strips are arranged side by side on it; each narrow paper strip includes multiple paper rulers arranged side by side; the cursor tracking structure 5 is used to control the rear conveying structure 7, cross-cutting structure 8, and shaping conveying structure 9; the longitudinal cutting structure 6 is used to cut the wide paper strip 1 into N narrow paper strips; the cross-cutting structure 8 is used to cut the N narrow paper strips into N narrow paper strips. The tape is simultaneously cut in the left and right directions to obtain a paper ruler; the shaping conveyor structure 9 includes a negative pressure plate 91; the negative pressure plate 91 is arranged in the front-back direction, located adjacent to the inner side of the cross-cutting structure 8, located adjacent to the lower side of the narrow paper tape output by the cross-cutting structure 8, and can slide left and right on the frame, and can move away from the cross-cutting structure 8; when the narrow paper tape is output inward to above the negative pressure plate 91, the negative pressure plate 91 is not working; when a piece of paper ruler moves completely to above the negative pressure plate 91, the negative pressure plate 91 is working, the rear conveyor structure 7 stops working, and the cross-cutting... Structure 8 is operational; when the paper ruler falls onto the negative pressure plate 91, it blocks the suction holes on the negative pressure plate 91, and the negative pressure plate 91 moves inward to the inner end; when the negative pressure plate 91 moves to the inner end, the negative pressure plate 91 is not operational; when the N suction cup assemblies 89 are in a facing state and located directly above the inner end of the negative pressure plate 91, the N suction cup assemblies 89 are respectively located directly above the N pieces of paper ruler on the negative pressure plate 91; when the N suction cup assemblies 89 are in a disjointed state and located directly above the conveying structure, the N suction cup assemblies 89 are respectively located directly above the N adjacent receiving slots.

[0007] In this embodiment of the invention, the frame, from the outside to the inside, is provided with a correction slide 11, a gantry bracket 12, a long smoothing platform 13, a short smoothing platform 14, a fixed bracket, and a sliding platform 15. The correction slide 11 is adjustable in the forward and backward directions. The unwinding structure 2 is mounted on the correction slide 11, and the correction slide 11 is driven by a correction electric cylinder to correct the unwinding structure 2. The front conveying structure 3 is mounted on the gantry bracket 12, and the tension adjustment structure 4 is located between the gantry bracket 12 and the long smoothing platform 13, with its flipping frame 41 hinged to the gantry bracket 12. The correction sensor for controlling the correction cylinder is mounted on the gantry bracket 12 via a bracket; the long smooth platform 13 is located above the inner side of the tension adjustment structure 4, and the cursor tracking structure 5 is located directly above the long smooth platform 13; the long smooth platform 13, the longitudinal cutting structure 6, the short smooth platform 14, the rear conveying structure 7, and the transverse cutting structure 8 are arranged adjacent to each other from the outside to the inside and are all flush; the rear conveying structure 7 and the transverse cutting structure 8 are both mounted on a fixed bracket; the sliding platform 15 is located below the inner side of the transverse cutting structure 8; and the shaping conveying structure 9 is mounted on the sliding platform 15.

[0008] In this embodiment of the invention, the unwinding structure 2 includes an unwinding roller 21, a first traction roller 22, and a second traction roller 23. The unwinding roller 21, the first traction roller 22, and the second traction roller 23 are all arranged in the front-back direction. The unwinding roller 21 is located on the upper outer side of the correction slide 11. The second traction roller 23 and the first traction roller 24 are arranged side by side on the inner side of the correction slide 11. The wide paper strip 1 output by the unwinding roller 21 obliquely passes inward and downward around the inner side of the first traction roller 22, then passes upward and around the outer side of the second traction roller 23, and then obliquely inward and upward to the front conveying structure 3.

[0009] In this embodiment of the invention, the front conveying structure 3 is a roller conveying structure, which is arranged in the front-back direction and is located on the upper part of the gantry bracket 12, above the inner side of the second traction roller 23. The tension adjustment structure 4 includes a tilting frame 41, a third traction roller 42, a fourth traction roller 43, a fifth traction roller 44, a sixth traction roller 45, and a seventh traction roller 46. The third traction roller 42, the fourth traction roller 43, the fifth traction roller 44, the sixth traction roller 45, and the seventh traction roller 46 are all arranged in the front-back direction. The tilting frame 41 is arranged in the left-right direction, and its outer end is rotatably mounted on the lower part of the gantry bracket 12 through a front-back rotating shaft. The fourth traction roller 43 and the sixth traction roller 45 are arranged side by side on the tilting frame 41. The guide roller 42, the fifth traction roller 44, and the seventh traction roller 46 are arranged side by side and are located above the flipping frame 41. The third traction roller 42 is located inside the front conveying structure 3. The seventh traction roller 46 is located adjacent to the outer side of the long smooth platform 13 and is flush with the long smooth platform 13. The fourth traction roller 43 is located below the third traction roller 42 and the fifth traction roller 44. The sixth traction roller 45 is located below the fifth traction roller 44 and the seventh traction roller 46. The wide paper tape 1 output from the front conveying structure 3 passes sequentially around the upper side of the third traction roller 42, the lower side of the fourth traction roller 43, the upper side of the fifth traction roller 44, the lower side of the sixth traction roller 45, and the upper side of the seventh traction roller 46, and is output horizontally inward.

[0010] In this embodiment of the invention, both the long smooth platform 13 and the short smooth platform 14 are horizontally arranged in the left-right direction and have smooth surfaces; the length of the long smooth platform 13 is greater than the length of the short smooth platform 14; a limiting round rod 16 is provided on the upper side of the outer end of the long smooth platform 13, the limiting round rod 16 is arranged in the front-back direction and is located on the upper side of the wide paper strip 1; the cursor tracking structure 5 is adjustable in the left-right and front-back directions and is used to track larger letters or specific patterns on the paper ruler; the longitudinal cutting structure 6 includes a support roller 61, an active roller 62 directly above the support roller 61, and a front roller 62 above the active roller 62. N-1 circular blades 63 are arranged side by side. The support roller 61 and the drive roller 62 are both arranged in the front-to-back direction. The support roller 61 is flush with the long smooth platform 13 and is located between the long smooth platform 13 and the short smooth platform 14. N-1 annular knife grooves are provided on it at equal intervals. The N-1 circular blades 63 are arranged at equal intervals and are located between two adjacent narrow paper strips. The drive roller 62 is driven to rotate by a corresponding structure. The N-1 annular knife grooves are located directly below the N-1 circular blades 63. The circular blades 63 are coaxially arranged with the drive roller 62 and their lower ends are located in the corresponding annular knife grooves.

[0011] In this embodiment of the invention, the rear conveying structure 7 is a clamping conveying structure, which includes two conveying units arranged vertically opposite each other. Each conveying unit includes a roughened roller 71, a smooth rod 72, and M annular friction elements 73. The roughened roller 71 and the smooth rod 72 are both arranged in the front-to-back direction. The roughened roller 71 has M annular grooves arranged side-by-side in the front-to-back direction. The M annular friction elements 73 are arranged side-by-side in the front-to-back direction and are all arranged in the left-to-right direction. The smooth rod 72 is located inside the roughened roller 71, and the two roughened rollers 71 are driven synchronously. The annular friction element 73 is an elastic structure; its outer end is fitted into the corresponding annular groove, and its inner end is fitted onto the smooth rod 72. Its side closest to the narrow paper strip is arranged horizontally in the left-to-right direction and contacts the upper or lower side of the narrow paper strip. The diameter of the roughened roller 71 is larger than the diameter of the smooth rod 72, and each narrow paper strip is at least... Three annular friction elements 73 should be provided. No annular friction elements 73 should be provided in the gap between two adjacent narrow paper tapes. The annular friction elements 73 of the two conveying units should be staggered horizontally. The cross-cutting structure 8 includes a lower cutter, an upper cutter, and a guide assembly. Both the lower and upper cutters are arranged in the front-to-back direction and are strip-shaped blades. The lower cutter is fixed and its top is flush with the rear conveying structure 7. The upper cutter is located directly above the lower cutter and can move up and down. The guide assembly is arranged in the left-to-right direction, located adjacent to the inner side of the rear conveying structure 7 and adjacent to the outer side of the lower cutter. It includes two guide plates arranged side-by-side. There is a gap between the two guide plates for the narrow paper tape to pass through. The lower guide plate is flush with the rear conveying structure 7. The guide plate is horizontally arranged in the left-to-right direction and its width in the left-to-right direction is 1-3 cm.

[0012] In this embodiment of the invention, the shaping and conveying structure 9 includes a negative pressure plate 91, two translation cylinders 92, two fixed seats 93, and two sliding rods 94. The negative pressure plate 94 is a rectangular plate with a cavity inside. Multiple grooves are arranged side-by-side on its upper side, and vertical arms are located at both ends of its lower side, inside the lower cutter. The width of the vertical arms in the left-right direction is greater than or equal to the width of the paper ruler in the left-right direction. The grooves are arranged in the left-right direction and have multiple suction holes arranged side-by-side on their upper sides, which are connected to the cavity. The vertical arms are vertically arranged, and a sliding groove is located on their front or rear side away from the negative pressure plate 91, arranged in the left-right direction. The two fixed seats 93 are arranged side-by-side at the inner end of the sliding platform 15, respectively facing the front and rear ends of the negative pressure plate 91. The two translation cylinders 92 are respectively located at the front and rear ends of the lower side of the negative pressure plate 91. At both ends, the inner ends of the telescopic rods are fixed to two fixed seats 93 respectively; the translation cylinder 92 is arranged in the left-right direction, and it is a double-rod cylinder. Both of its telescopic rods are hollow structures and are respectively connected to the extension chamber and the contraction chamber of the translation cylinder 92. Its contraction chamber is connected to the cavity of the negative pressure plate 91, and a one-way valve is provided at the connection between it and the negative pressure plate 91; the slide rod 94 is arranged in the left-right direction; the inner ends of the two slide rods 94 are respectively fixed to two fixed seats 93, and their outer ends are slidably connected to the sliding grooves on both sides of the negative pressure plate 91; when the paper ruler falls on the negative pressure plate 91, it blocks all the suction holes on the negative pressure plate 91; when the negative pressure plate 91 moves inward, the translation cylinder 92 is connected to the negative pressure plate 91, and the cavity of the negative pressure plate 91 is under negative pressure; when the negative pressure plate 91 moves outward, the one-way valve is closed.

[0013] In this embodiment of the invention, the robotic arm includes a servo motor 81, a synchronizing rod 82, a crossbeam 83, two synchronizing belts, two side plates 84, two longitudinal slide rails 85, two vertical slide rails, two swing arms 86, two vertical arms 87, two slide blocks 88, and multiple suction cup assemblies 89. The two side plates 84 are arranged side-by-side, one in front of the other, and both are positioned along the left-right direction. A negative pressure plate 91 is located between the two side plates 84. The lower ends of the two swing arms 86 are rotatably mounted on the two side plates 84 via first rotating shafts in the front-back direction, allowing the swing arms 86 to swing back and forth in the left-right direction. The servo motor 81 is mounted on one side plate 84 and is connected to the first rotating shaft on that side plate 84. The synchronizing rod 82 is arranged along the front-back direction and is located between the two side plates 84. The two first rotating shafts... Two synchronous belts are connected to both ends of the synchronous rod 82 via synchronous transmission, and the synchronous belts are arranged vertically. Two longitudinal slide rails 85 are respectively arranged on two side plates 84, and are arranged in the left-right direction, located below the first rotating shaft. Two slide blocks 88 are respectively slidably arranged on the two longitudinal slide rails 85. Two vertical arms 87 are both arranged vertically, and their upper ends are respectively hinged to the upper ends of two swing arms 86 via a second rotating shaft in the front-back direction. Two vertical slide rails are respectively arranged on the two vertical arms 87, and are respectively slidably arranged on the two slide blocks 88. The crossbeam 83 is arranged in the front-back direction, and its front and rear ends are respectively fixedly connected to the lower ends of the two vertical arms 87. Multiple suction cup assemblies 89 are arranged side by side on the crossbeam 83, and can move synchronously towards or away from each other. The lower side of the assembly is provided with suction cups that can adsorb paper rulers.

[0014] Specifically, in this embodiment of the invention, N is three, so the number of suction cup assemblies 89 is three; a transverse slide rail is provided on the crossbeam 83 along the front-to-back direction; one suction cup assembly 89 in the middle is fixedly installed, and the two suction cup assemblies 89 at both ends are slidably installed on the transverse slide rail; two suction cup cylinders driven synchronously are also provided on the crossbeam 83; the two suction cup cylinders are both arranged along the front-to-back direction, respectively on the left and right sides of the crossbeam 83, facing each other, and their extension rods are respectively connected to the two suction cup assemblies 89 at both ends; when the suction cup cylinders extend, the two suction cup assemblies 89 at both ends move away from the suction cup assembly 89 in the middle to form a disjointed state.

[0015] On the other hand, embodiments of the present invention also provide an online method for adding paper rulers to a medical dressing kit. The method includes: an unwinding structure 2 outputs a wide paper strip 1, which is processed by a front conveying structure 3, a tension adjustment structure 4, a cursor tracking structure 5, a longitudinal cutting structure 6, a rear conveying structure 7, and a transverse cutting structure 8 to obtain a paper ruler. The paper ruler falls onto a negative pressure plate 91, blocking the suction holes on the negative pressure plate 91. The negative pressure plate 91 moves inward while adsorbing the paper ruler through negative pressure. When the negative pressure plate 91 moves to the inner end, the adsorption stops. A robotic arm moves to directly above the negative pressure plate 91. At this time, N suction cup assemblies 89 are in a facing state and are respectively located directly above N pieces of paper rulers on the negative pressure plate 91. The robotic arm moves to transfer the paper ruler to directly above the conveying structure. At this time, the N suction cup assemblies 89 are in a disjointed state and are respectively located directly above N adjacent receiving slots. The two online adding components operate alternately.

[0016] The beneficial effects of the technical solution provided by the embodiments of the present invention are as follows: The embodiments of the present invention provide an online paper ruler addition device and method for medical dressing combination packs, in which each suction cup assembly transfers only one paper ruler. This patent can automatically realize cross-cutting, longitudinal cutting, and transfer. The shaping and conveying structure has multiple functions: first, to make the paper ruler flat (adhering to the negative pressure plate for flatness); second, to increase the speed of the robotic arm (the movement distance of the robotic arm is short, and the negative pressure plate and the robotic arm can move simultaneously); third, to facilitate the setting of the robotic arm (the suction position is far away from the cross-cutting structure); and fourth, to facilitate the cutting of the cross-cutting structure (the paper ruler is fixed during cutting (movement will be slightly delayed), and it is moved immediately after cutting). Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the online paper ruler adding device for a medical dressing kit; Figure 2 This is a schematic diagram of the rear conveyor structure; Figure 3 This is a schematic diagram of the shaping and conveying structure; Figure 4 This is a schematic diagram of the robotic arm. Figure 5 This is a physical image of the rear conveyor structure; Figure 6 This is a physical image of the shaping and conveying structure.

[0018] In the diagram: 1. Wide paper tape, 2. Unwinding structure, 3. Front conveyor structure, 4. Tension adjustment structure, 5. Cursor tracking structure, 6. Slitting structure, 7. Rear conveyor structure, 8. Cross-cutting structure, 9. Shaping conveyor structure; 11 Correction slide, 12 Gantry bracket, 13 Long smooth platform, 14 Short smooth platform, 15 Sliding platform, 16 Limiting round rod; 21 Unwinding roll, 22 First traction roll, 23 Second traction roll; 41 Tilting frame, 42 Third traction roller, 43 Fourth traction roller, 44 Fifth traction roller, 45 Sixth traction roller, 46 Seventh traction roller; 61 Support roller, 62 Drive roller, 63 Circular blade; 71. Rough-surface roller; 72. Smooth rod; 73. Annular friction component; 81 Servo motor, 82 Synchronous rod, 83 Crossbeam, 84 Side plate, 85 Longitudinal slide rail, 86 Swing arm, 87 Vertical arm, 88 Slide seat, 89 Suction cup assembly; 91 Negative pressure plate, 92 Translation cylinder, 93 Fixed base, 94 Slide rod. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Example 1 See Figure 1-6 Example 1 provides an online paper ruler addition device for a medical dressing kit. The device includes a conveying structure arranged in the front-to-back direction and two online addition components on its left and right sides. The conveying structure has multiple receiving slots (specifically rectangular slots) arranged side by side in the front and back.

[0021] The online addition components include a frame, an unwinding structure 2, a front conveyor structure 3, a tension adjustment structure 4, a cursor tracking structure 5, a longitudinal cutting structure 6, a rear conveyor structure 7, a transverse cutting structure 8, a shaping conveyor structure 9, a robotic arm, and multiple suction cup assemblies 89. The unwinding structure 2, front conveyor structure 3, tension adjustment structure 4, cursor tracking structure 5, longitudinal cutting structure 6, rear conveyor structure 7, transverse cutting structure 8, and shaping conveyor structure 9 are arranged sequentially on the frame from the outside to the inside (in this embodiment, for ease of description, the side closest to the conveyor structure is defined as the inside). N suction cup assemblies 89 are arranged side-by-side on the robotic arm and can move synchronously towards or away from each other in the forward and backward directions. The robotic arm can move left and right and vertically.

[0022] The unwinding structure 2 outputs a wide paper tape 1. Paper rulers (arranged along the front-to-back direction) on the wide paper tape 1 are arranged in a rectangular array, with N (N being an integer from 2 to 5) narrow paper tapes arranged side-by-side on it. Each narrow paper tape includes multiple paper rulers arranged side-by-side. The cursor tracking structure 5 controls the rear conveying structure 7, the cross-cutting structure 8, and the shaping conveying structure 9, etc. The front conveying structure 3, the tension adjustment structure 4, and the rear conveying structure 7 work together to convey the wide paper tape 1 and the narrow paper tapes. The longitudinal cutting structure 6 is used to cut the wide paper tape 1 into N narrow paper tapes, and the cross-cutting structure 8 is used to simultaneously cut the N narrow paper tapes in the left-to-right direction to obtain paper rulers.

[0023] The shaping and conveying structure 9 includes a negative pressure plate 91. The negative pressure plate 91 is arranged along the front-to-back direction, located adjacent to the inner side of the cross-cutting structure 8, and adjacent to the lower side of the narrow paper tape output from the cross-cutting structure 8. It can slide laterally on the frame and move away from the cross-cutting structure 8. Multiple suction holes are provided on its upper side, allowing it to negatively absorb paper rulers. When the narrow paper tape is output inwards to above the negative pressure plate 91, the negative pressure plate 91 does not operate (no negative pressure absorption, the same applies hereinafter). When a piece of paper ruler has moved completely to above the negative pressure plate 91, the negative pressure plate 91 operates, the rear conveying structure 7 stops operating, and the cross-cutting structure 8 operates. When the paper ruler falls onto the negative pressure plate 91, it blocks the suction holes on the negative pressure plate 91, and the negative pressure plate 91 moves inwards (with a slight delay relative to its operation) to its inner end. When the negative pressure plate 91 moves to its inner end, it does not operate.

[0024] When the N suction cup assemblies 89 are facing each other and located directly above the inner negative pressure plate 91, the N suction cup assemblies 89 are respectively located directly above the N paper rulers on the negative pressure plate 91. When the N suction cup assemblies 89 are separated and located directly above the conveying structure, the N suction cup assemblies 89 are respectively located directly above the N adjacent receiving slots.

[0025] Example 2 See Figure 1-6 Example 2 provides an online paper ruler adding device for a medical dressing combination pack. Its structure is basically the same as that of Example 1, except that: in this example, the frame is provided with a correction slide 11, a gantry bracket 12, a long smooth platform 13, a short smooth platform 14, a fixed bracket and a sliding platform 15 from the outside to the inside.

[0026] The system includes a correction slide 11 that can be adjusted forward and backward, an unwinding structure 2 mounted on the correction slide 11, and a correction electric cylinder (located along the forward and backward direction and controlled by a correction sensor) that drives the unwinding structure 2 to correct its alignment. A front conveyor structure 3 is mounted on a gantry bracket 12. A tension adjustment structure 4 is located between the gantry bracket 12 and the long smooth platform 13, with its flipping frame 41 hinged to the gantry bracket 12 at its outer end. The correction sensor is mounted on the gantry bracket 12 via a bracket. The long smooth platform 13 is located above the inner side of the tension adjustment structure 4, and a cursor tracking structure 5 is located directly above the long smooth platform 13. The long smooth platform 13, longitudinal cutting structure 6, short smooth platform 14, rear conveyor structure 7, and transverse cutting structure 8 are arranged adjacent to each other from the outside in and are all flush. The rear conveyor structure 7 and transverse cutting structure 8 are both mounted on a fixed bracket. A sliding platform 15 is located below the inner side of the transverse cutting structure 8, and a shaping conveyor structure 9 is mounted on the sliding platform 15.

[0027] Specifically, the unwinding structure 2 includes an unwinding roller 21, a first traction roller 22, and a second traction roller 23. The unwinding roller 21, the first traction roller 22, and the second traction roller 23 are all arranged in a front-to-back direction. The unwinding roller 21 is located on the upper outer side of the correction slide 11. The second traction roller 23 and the first traction roller 24 are arranged side-by-side vertically on the inner side of the correction slide 11, with the second traction roller 23 positioned above the first traction roller 24. The wide paper strip 1 output from the unwinding roller 21 obliquely inwards and downwards around the inner side of the first traction roller 22, then upwards around the outer side of the second traction roller 23, and then obliquely inwards and upwards to the front conveying structure 3.

[0028] Specifically, the front conveying structure 3 is a roller conveying structure, which is arranged in the front-to-back direction. It is located on the upper part of the gantry bracket 12 and above the inner side of the second traction roller 23. It specifically includes two conveying rollers arranged side by side (one of which is the drive roller).

[0029] Specifically, the tension adjustment structure 4 includes a tilting frame 41, a third traction roller 42, a fourth traction roller 43, a fifth traction roller 44, a sixth traction roller 45, and a seventh traction roller 46, etc. The third traction roller 42, the fourth traction roller 43, the fifth traction roller 44, the sixth traction roller 45, and the seventh traction roller 46 are all arranged in the front-to-back direction. The tilting frame 41 is arranged in the left-to-right direction, and its outer end is rotatably mounted on the lower part of the portal frame 12 through a front-to-back rotating shaft. The fourth traction roller 43 and the sixth traction roller 45 are arranged side by side on the tilting frame 41. The third traction roller 42, the fifth traction roller 44, and the seventh traction roller 46 are arranged side by side (from the outside to the inside) and are located above the flipping frame 41. The third traction roller 42 is located inside the front conveying structure 3 (specifically, below the inside). The seventh traction roller 46 is located adjacent to the outer side of the long smooth platform 13 and is flush with the long smooth platform 13. The fourth traction roller 43 is located below the space between the third traction roller 42 and the fifth traction roller 44. The sixth traction roller 45 is located below the space between the fifth traction roller 44 and the seventh traction roller 46. The wide paper tape 1 output from the front conveying structure 3 passes sequentially around the upper side of the third traction roller 42, the lower side of the fourth traction roller 43, the upper side of the fifth traction roller 44, the lower side of the sixth traction roller 45, and the upper side of the seventh traction roller 46, and is output horizontally inward.

[0030] Specifically, both the long smooth platform 13 and the short smooth platform 14 are horizontally arranged in the left-right direction, and their surfaces are smooth. The length of the long smooth platform 13 is greater than the length of the short smooth platform 14; specifically, the length of the long smooth platform 13 is greater than 20cm, and the length of the short smooth platform 14 is less than 10cm. A limiting rod 16 is provided on the upper side of the outer end of the long smooth platform 13. The limiting rod 16 is arranged in the front-back direction, located on the upper side of the wide paper tape 1, and its diameter is less than 2cm. The cursor tracking structure 5 is adjustable in both the left-right and front-back directions and is mounted on the frame to track larger letters or specific patterns on the paper ruler.

[0031] Specifically, the longitudinal cutting structure 6 includes a support roller 61, a drive roller 62, and N-1 circular blades 63, etc. Both the support roller 61 and the drive roller 62 are arranged in the front-to-back direction. The support roller 61 is flush with the long smooth platform 13, located between the long smooth platform 13 and the short smooth platform 14, and has N-1 annular knife grooves evenly spaced front-to-back on it. The drive roller 62 is located directly above the support roller 61 and is driven to rotate by a corresponding structure. The N-1 circular blades 63 are arranged side-by-side on the drive roller 62, evenly spaced, between two adjacent narrow paper strips. The N-1 annular knife grooves are located directly below each of the N-1 circular blades 63. The circular blades 63 are coaxially arranged with the drive roller 62, and their lower ends are located in the corresponding annular knife grooves.

[0032] Specifically, the rear conveying structure 7 is a clamping conveying structure, which includes two conveying units arranged vertically opposite each other. Each conveying unit includes a roughened roller 71, a smooth rod 72, and M annular friction elements 73. Both the roughened roller 71 and the smooth rod 72 are arranged in the front-to-back direction. The roughened roller 71 has M annular grooves arranged side-by-side in the front-to-back direction. The M annular friction elements 73 are arranged side-by-side in the front-to-back direction and are all arranged in the left-to-right direction. The smooth rod 72 is located inside the roughened roller 71, and the two roughened rollers 71 are driven synchronously. The annular friction elements 73 are elastic structures; their outer ends are fitted into the corresponding annular grooves, and their inner ends are fitted onto the smooth rod 72. The side of the friction element closest to the narrow paper strip (upper or lower) is arranged horizontally in the left-to-right direction and contacts the upper or lower side of the narrow paper strip. Specifically, it is a spring (diameter less than 5mm, with each spring section arranged adjacent to the other). The diameter of the roughened roller 71 is larger than the diameter of the smooth rod 72. Each narrow paper strip is provided with at least three annular friction elements 73. No annular friction elements 73 are provided in the gap between two adjacent narrow paper strips. The annular friction elements 73 of the two conveying units are staggered in the left and right directions and upwards.

[0033] Specifically, the cross-cutting structure 8 includes a lower cutter, an upper cutter, and a guide assembly. Both the lower and upper cutters are arranged in the front-to-back direction and are strip-shaped blades. The lower cutter is fixedly installed, and its top is flush with the rear conveyor structure 7. The upper cutter is located directly above the lower cutter and can move up and down (driven by a corresponding structure). The guide assembly is arranged in the left-to-right direction, located adjacent to the inner side of the rear conveyor structure 7 and adjacent to the outer side of the lower cutter. It includes two guide plates arranged side-by-side. A gap exists between the two guide plates for the narrow paper tape to pass through. The lower guide plate is flush with the rear conveyor structure 7. The guide plates are horizontally arranged in the left-to-right direction, with a width of 1-3 cm, specifically rectangular plates.

[0034] Specifically, the shaping and conveying structure 9 includes a negative pressure plate 91, two translation cylinders 92, two fixed seats 93, and two sliding rods 94. The negative pressure plate 94 is a rectangular plate with an internal cavity. Multiple grooves are arranged side-by-side on its upper side, and vertical arms are located at both ends of its lower side, inside the lower cutter. The width of the vertical arms in the left-right direction is greater than or equal to the width of the paper ruler in the left-right direction. The material is aluminum alloy. The grooves are arranged in the left-right direction, and multiple suction holes are arranged side-by-side on them. These holes are small in width and depth to reduce exhaust during negative pressure extraction and allow them to communicate with the atmosphere when no negative pressure is being extracted. Specifically, the width of the grooves is less than 4mm, and the depth is less than 3mm. The suction holes are connected to the cavity. The vertical arms are vertically arranged in the left-right direction, and a sliding groove is provided on the front or rear side away from the negative pressure plate 91. The sliding groove is arranged in the left-right direction. Specifically, a sliding groove is provided on the front side of the front vertical arm and on the rear side of the rear vertical arm. Two fixed seats 93 are arranged side-by-side at the inner end of the sliding platform 15, respectively facing the front and rear ends of the negative pressure plate 91. Specifically, the fixed seats 93 are rectangular plates arranged along the front-rear direction. Two translation cylinders 92 are respectively located at the front and rear ends of the lower side of the negative pressure plate 91, with the inner ends of their telescopic rods fixed to the two fixed seats 93. The translation cylinders 92 are arranged in the left-right direction and are double-rod cylinders. Their two telescopic rods (arranged side-by-side) are hollow structures and are respectively connected to the extension chamber and the contraction chamber of the translation cylinder 92. The contraction chamber is connected to the cavity of the negative pressure plate 91, and a one-way valve is provided at the connection point with the negative pressure plate 91. The inner ends of the two telescopic rods are connected to the negative pressure structure through pipelines. The negative pressure structure realizes the extension and retraction of the translation cylinders 92 by communicating with the different telescopic rods. The two translation cylinders 92 are driven synchronously and are both vacuum cylinders. The slide rod 94 is arranged in the left-right direction. The inner ends of the two sliding rods 94 are fixed to two fixed seats 93, and their outer ends are slidably connected to the sliding grooves on both sides of the negative pressure plate 91. When the paper ruler falls onto the negative pressure plate 91, it blocks all the suction holes on the negative pressure plate 91, allowing the negative pressure plate 91 to move left and right (while simultaneously drawing negative pressure from the corresponding chamber). When the negative pressure plate 91 moves inward, the translation cylinder 92 is connected to the negative pressure plate 91, and the cavity of the negative pressure plate 91 is under negative pressure. When the negative pressure plate 91 moves outward, the one-way valve closes.

[0035] Specifically, the robotic arm includes a servo motor 81, a synchronizer rod 82, a crossbeam 83, two synchronizer belts, two side plates 84, two longitudinal slide rails 85 (arranged side by side), two vertical slide rails (arranged side by side), two swing arms 86 (arranged side by side), two vertical arms 87, two slide blocks 88, and multiple suction cup assemblies 89, etc. The two side plates 84 are arranged side-by-side, both along the left-right direction, and are located above the conveying structure. A negative pressure plate 91 is located between the two side plates 84. The lower ends of the two swing arms 86 are rotatably mounted on the two side plates 84 via a first pivot shaft, located on the side of the corresponding side plate 84 closest to the negative pressure plate 91 (front or rear side). The swing arms 86 can swing back and forth in the left-right direction. A servo motor 81 is mounted on a side plate 84 (either the front or rear side plate 84), and is driven by a first rotating shaft on the side plate 84 (specifically, coaxially fixed). It is located on the side of the side plate 84 away from the negative pressure plate 91 (e.g., the rear side of the rear side plate 84). A synchronizing rod 82 is arranged in the front-rear direction, positioned between the two side plates 84, below the longitudinal slide rail 85. Two first rotating shafts (each equipped with a synchronous pulley, specifically located on the side of the side plate 84 away from the negative pressure plate 91) are driven by two synchronous belts to both ends of the synchronizing rod 82 (each equipped with a synchronous pulley), with the synchronous belts arranged vertically. Two longitudinal slide rails 85 are respectively mounted on the two side plates 84, arranged in the left-right direction, below the first rotating shafts, and located on the side of the side plate 84 closest to the negative pressure plate 91 (either the front or rear side). Two sliding blocks 88 are slidably mounted on the two longitudinal slide rails 85. Both vertical arms 87 are vertically arranged, with their upper ends hinged to the upper ends of the two swing arms 86 via second pivots in the front-rear direction. Their lower ends extend downward relative to the corresponding swing arms 86, located on the side of the swing arms 86 closest to the negative pressure plate 91 (front or rear). Two vertical slide rails are respectively provided on the two vertical arms 87, and are slidably mounted on two slide blocks 88, located on the side of the vertical arms 87 furthest from the negative pressure plate 91 (front or rear). A crossbeam 83 is arranged in the front-rear direction, with its front and rear ends fixedly connected to the lower ends of the two vertical arms 87, respectively. Multiple suction cup assemblies 89 are arranged side-by-side on the crossbeam 83, capable of moving synchronously towards or away from each other. Each assembly has suction cups (multiple in total) on its lower side capable of adsorbing paper rulers. Specifically, each suction cup assembly 89 has four suction cups arranged in a rectangular shape (in the front-rear direction).

[0036] Example 3 Example 3 provides an online paper ruler addition device for a medical dressing kit. Its structure is basically the same as that of Example 2, except that N is three, resulting in three suction cup assemblies 89 and two circular blades 63. A transverse slide rail is provided along the front-to-back direction on the crossbeam 83; one suction cup assembly 89 is fixedly installed in the middle, and the two suction cup assemblies 89 at both ends are slidably mounted on the transverse slide rail. Two synchronously driven suction cup cylinders are also provided on the crossbeam 83; both suction cup cylinders are arranged along the front-to-back direction, located on the left and right sides of the crossbeam 83 respectively, facing each other, and their extension rods are connected to the two suction cup assemblies 89 at both ends respectively. When the suction cup cylinders extend, the two suction cup assemblies 89 at both ends move away from the suction cup assembly 89 in the middle, forming a disjointed state.

[0037] Example 4 See Figure 1-6 Example 4 provides an online method for adding paper rulers to a medical dressing kit, using the online paper ruler adding device for medical dressing kits disclosed in Examples 1-3. The method includes: an unwinding structure 2 outputs a wide paper strip 1, which is processed by a front conveying structure 3, a tension adjustment structure 4, a cursor tracking structure 5, a longitudinal cutting structure 6, a rear conveying structure 7, and a transverse cutting structure 8 to obtain a paper ruler. The paper ruler falls onto a negative pressure plate 91, blocking the suction holes on the negative pressure plate 91. While the negative pressure plate 91 moves inward (translation cylinder 92 actuates), it simultaneously adsorbs the paper ruler through negative pressure. When the negative pressure plate 91 reaches its inner end, the adsorption stops. A robotic arm moves (servo motor 81 actuates) to directly above the negative pressure plate 91. At this time, N suction cup assemblies 89 are in a facing state (suction cup cylinders retract) and are respectively located directly above the N paper rulers on the negative pressure plate 91. The robotic arm moves the paper ruler to a position directly above the conveyor structure. At this point, the N suction cup assemblies 89 are separated and positioned directly above the N adjacent receiving slots. The two online addition components operate alternately.

[0038] In this patent, the terms "first", "second", "third", "fourth", "fifth", "sixth" and "seventh" serve only to distinguish the patent and have no other special meaning.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An online paper ruler adding device for a medical dressing kit, comprising a conveying structure arranged in a front-to-back direction and two online adding components on its left and right sides, wherein the conveying structure has multiple receiving slots arranged side-by-side in the front and back, and the online adding components include a robotic arm and N suction cup components (89) arranged side-by-side in the front and back, wherein the robotic arm is capable of left-to-right and vertical movement; characterized in that, The online adding component also includes a frame and a frame on which an unwinding structure (2), a front conveying structure (3), a tension adjustment structure (4), a cursor tracking structure (5), a longitudinal cutting structure (6), a rear conveying structure (7), a transverse cutting structure (8), and a shaping conveying structure (9) are arranged sequentially from the outside to the inside. N suction cup components (89) can move synchronously towards or away from each other in the front and back directions. The unwinding structure (2) outputs a wide paper tape (1). The paper rulers on the wide paper tape (1) are arranged in a rectangular array, and N narrow paper tapes are arranged side by side on it. Each narrow paper tape includes multiple paper rulers arranged side by side on the left and right. The cursor tracking structure (5) is used to control the rear conveying structure (7), the transverse cutting structure (8), and the shaping conveying structure (9). The longitudinal cutting structure (6) is used to cut the wide paper tape (1) into N narrow paper tapes. The transverse cutting structure (8) is used to cut the N narrow paper tapes simultaneously in the left and right directions to obtain paper rulers. The shaping and conveying structure (9) includes a negative pressure plate (91); the negative pressure plate (91) is arranged in the front-back direction, located adjacent to the inner side of the cross-cutting structure (8), located adjacent to the lower side of the narrow paper tape output by the cross-cutting structure (8), and can slide left and right on the frame, and can move away from the cross-cutting structure (8); when the narrow paper tape is output inward to above the negative pressure plate (91), the negative pressure plate (91) does not work; when a piece of paper ruler moves completely to above the negative pressure plate (91), the negative pressure plate (91) works, the rear conveying structure (7) stops working, and the cross-cutting structure (8) works; When the paper ruler falls onto the negative pressure plate (91) and blocks the suction hole on the negative pressure plate (91), the negative pressure plate (91) moves inward to the inner end; when the negative pressure plate (91) moves to the inner end, the negative pressure plate (91) does not work; when the N suction cup assemblies (89) are in a facing state and located directly above the inner end of the negative pressure plate (91), the N suction cup assemblies (89) are respectively located directly above the N paper rulers on the negative pressure plate (91); when the N suction cup assemblies (89) are in a separated state and located directly above the conveying structure, the N suction cup assemblies (89) are respectively located directly above the adjacent N receiving slots.

2. The apparatus according to claim 1, characterized in that, The frame is provided with a correction slide (11), a gantry bracket (12), a long smooth platform (13), a short smooth platform (14), a fixed bracket, and a sliding platform (15) in sequence from the outside to the inside. The correction slide (11) can be adjusted forward and backward. The unwinding structure (2) is located on the correction slide (11). The correction slide (11) is driven by a correction electric cylinder to correct the unwinding structure (2). The front conveying structure (3) is located on the gantry bracket (12). The tension adjustment structure (4) is located between the gantry bracket (12) and the long smooth platform (13), and the outer end of its flipping frame (41) is hinged to the gantry bracket (12) to control the correction. The bias correction sensor of the bias cylinder is mounted on the gantry bracket (12) via a bracket; the long smooth platform (13) is located above the inner side of the tension adjustment structure (4), and the cursor tracking structure (5) is located directly above the long smooth platform (13); the long smooth platform (13), the longitudinal cutting structure (6), the short smooth platform (14), the rear conveying structure (7) and the transverse cutting structure (8) are arranged adjacent to each other from the outside to the inside and are all flush; the rear conveying structure (7) and the transverse cutting structure (8) are both mounted on a fixed bracket; the sliding platform (15) is located below the inner side of the transverse cutting structure (8); and the shaping conveying structure (9) is mounted on the sliding platform (15).

3. The apparatus according to claim 2, characterized in that, The unwinding structure (2) includes an unwinding roller (21), a first traction roller (22), and a second traction roller (23). The unwinding roller (21), the first traction roller (22), and the second traction roller (23) are all arranged in the front-back direction. The unwinding roller (21) is located on the upper outer side of the correction slide (11). The second traction roller (23) and the first traction roller (24) are arranged side by side on the inner side of the correction slide (11). The wide paper strip (1) output by the unwinding roller (21) obliquely inward and downward around the inner side of the first traction roller (22), then upward around the outer side of the second traction roller (23), and then obliquely inward and upward to the front conveying structure (3).

4. The apparatus according to claim 3, characterized in that, The front conveying structure (3) is a roller conveying structure, which is arranged in the front-back direction. It is located on the upper part of the gantry bracket (12) and is located above the inner side of the second traction roller (23). The tension adjustment structure (4) includes a tilting frame (41), a third traction roller (42), a fourth traction roller (43), a fifth traction roller (44), a sixth traction roller (45), and a seventh traction roller (46). The third traction roller (42), fourth traction roller (43), fifth traction roller (44), sixth traction roller (45), and seventh traction roller (46) are all arranged in the front-back direction. The tilting frame (41) is arranged in the left-right direction, and its outer end is rotatably mounted on the lower part of the portal frame (12) through a front-back rotating shaft. The fourth traction roller (43) and sixth traction roller (45) are arranged side by side on the tilting frame (41), and the third traction roller (42), fifth traction roller (44), and seventh traction roller (46) are arranged side by side on the left-right direction and are located at the lower part of the portal frame (12). Above the flipping frame (41), the third traction roller (42) is located inside the front conveying structure (3), the seventh traction roller (46) is located adjacent to the outer side of the long smooth platform (13) and is flush with the long smooth platform (13), the fourth traction roller (43) is located below between the third traction roller (42) and the fifth traction roller (44), and the sixth traction roller (45) is located below between the fifth traction roller (44) and the seventh traction roller (46); the wide paper tape (1) output by the front conveying structure (3) passes in sequence around the upper side of the third traction roller (42), the lower side of the fourth traction roller (43), the upper side of the fifth traction roller (44), the lower side of the sixth traction roller (45) and the upper side of the seventh traction roller (46), and is output horizontally inward.

5. The apparatus according to claim 4, characterized in that, Both the long smooth platform (13) and the short smooth platform (14) are horizontally arranged in the left-right direction and have smooth surfaces; the length of the long smooth platform (13) is greater than the length of the short smooth platform (14); a limiting rod (16) is provided on the upper side of the outer end of the long smooth platform (13), the limiting rod (16) is arranged in the front-back direction and is located on the upper side of the wide paper tape (1); the cursor tracking structure (5) can be adjusted in the left-right and front-back directions and is used to track larger letters or specific patterns on the paper ruler; The longitudinal cutting structure (6) includes a support roller (61), an active roller (62) directly above the support roller (61), and N-1 circular blades (63) arranged side by side on the active roller (62). The support roller (61) and the active roller (62) are both arranged in the front-to-back direction. The support roller (61) is flush with the long smooth platform (13) and is located between the long smooth platform (13) and the short smooth platform (14). N-1 annular knife grooves are arranged at equal intervals on the support roller (61). The N-1 circular blades (63) are arranged at equal intervals and are located between two adjacent narrow paper strips. The active roller (62) is driven to rotate by the corresponding structure. The N-1 annular knife grooves are located directly below the N-1 circular blades (63). The circular blades (63) are coaxially arranged with the active roller (62) and their lower ends are located in the corresponding annular knife grooves.

6. The apparatus according to claim 5, characterized in that, The rear conveying structure (7) is a clamping conveying structure, which includes two conveying units arranged opposite each other vertically. Each conveying unit includes a roughened roller (71), a smooth rod (72), and M annular friction elements (73). The roughened roller (71) and the smooth rod (72) are both arranged in the front-to-back direction. The roughened roller (71) has M annular grooves arranged side by side in the front-to-back direction on its roller surface. The M annular friction elements (73) are arranged side by side in the front-to-back direction and are all arranged in the left-to-right direction. The smooth rod (72) is located inside the roughened roller (71). The two roughened rollers (71) move synchronously. Drive; the annular friction element (73) is an elastic structure, with its outer end sleeved in the corresponding annular groove and its inner end sleeved on the smooth rod (72). The side of the friction element close to the narrow paper strip is horizontally arranged in the left and right direction and it contacts the upper or lower side of the narrow paper strip; the diameter of the rough roller (71) is larger than the diameter of the smooth rod (72). Each narrow paper strip is provided with at least three annular friction elements (73). No annular friction elements (73) are provided in the gap between two adjacent narrow paper strips. The annular friction elements (73) of the two conveying units are staggered in the left and right directions. The cross-cutting structure (8) includes a lower cutter, an upper cutter, and a guide assembly. Both the lower cutter and the upper cutter are arranged in the front-to-back direction and are both strip-shaped blades. The lower cutter is fixedly arranged and its top is flush with the rear conveying structure (7). The upper cutter is located directly above the lower cutter and can move up and down. The guide assembly is arranged in the left-to-right direction and is located on the adjacent inner side of the rear conveying structure (7) and on the adjacent outer side of the lower cutter. It includes two guide plates arranged side by side. There is a gap between the two guide plates for the narrow paper tape to pass through. The lower guide plate is flush with the rear conveying structure (7). The guide plate is arranged horizontally in the left-to-right direction and its width in the left-to-right direction is 1-3cm.

7. The apparatus according to claim 6, characterized in that, The shaping and conveying structure (9) includes a negative pressure plate (91), two translation cylinders (92), two fixed seats (93), and two sliding rods (94); the negative pressure plate (94) is a rectangular plate with a cavity inside, and multiple grooves are arranged side by side on its upper side. Vertical arms are provided at both the front and rear ends of its lower side, located inside the lower cutter, and its width in the left and right direction is greater than or equal to the width of the paper ruler in the left and right direction; the grooves are arranged in the left and right direction and multiple suction holes are arranged side by side on its upper side, and the suction holes are connected to the cavity; the vertical arms are arranged vertically, and a sliding groove is provided on the front or rear side away from the negative pressure plate (91), and the sliding groove is arranged in the left and right direction; the two fixed seats (93) are arranged side by side at the inner end of the sliding platform (15), and are respectively arranged opposite the front and rear ends of the negative pressure plate (91); the two translation cylinders (92) are respectively located at the front and rear ends of the lower side of the negative pressure plate (91), and their telescopic rods are... The inner ends are respectively fixed on two fixed seats (93); the translation cylinder (92) is arranged in the left and right direction. It is a double-rod cylinder. Its two telescopic rods are hollow structures and are respectively connected to the extension chamber and the contraction chamber of the translation cylinder (92). Its contraction chamber is connected to the cavity of the negative pressure plate (91). A one-way valve is provided at the connection between it and the negative pressure plate (91); the slide rod (94) is arranged in the left and right direction; the inner ends of the two slide rods (94) are respectively fixed on two fixed seats (93); the translation cylinder (92) is arranged in the left and right direction. Its inner ends are respectively fixed on two fixed seats (93); the translation cylinder (92) is arranged in the left and right direction. Its two telescopic rods (94) are hollow structures and are respectively connected to the extension chamber and the contraction chamber of the translation cylinder (92). Its contraction chamber is connected to the cavity of the negative pressure plate (91). A one-way valve is provided at the connection between it and the negative pressure plate (91); the slide rod (94) is arranged in the left and right direction. It is fixed on two fixed seats (93), and its outer ends are slidably connected to the sliding grooves on both sides of the negative pressure plate (91); when the paper ruler falls on the negative pressure plate (91), it covers all the suction holes on the negative pressure plate (91); when the negative pressure plate (91) moves inward, the translation cylinder (92) is connected to the negative pressure plate (91), and the cavity of the negative pressure plate (91) is under negative pressure; when the negative pressure plate (91) moves outward, the one-way valve is closed.

8. The apparatus according to claim 1, characterized in that, The robotic arm includes a servo motor (81), a synchronizing rod (82), a crossbeam (83), two synchronizing belts, two side plates (84), two longitudinal slide rails (85), two vertical slide rails, two swing arms (86), two vertical arms (87), two slide blocks (88), and multiple suction cup assemblies (89). The two side plates (84) are arranged side by side and are both arranged in the left-right direction. The negative pressure plate (91) is located between the two side plates (84). The lower ends of the two swing arms (86) are respectively rotatably mounted on the two side plates (84) through a first rotating shaft in the front-back direction. The swing arms (86) can swing back and forth in the left-right direction. The servo motor (81) is mounted on one side plate (84) and is connected to the first rotating shaft on the side plate (84). The synchronizing rod (82) is arranged in the front-back direction and is located between the two side plates (84). The two first rotating shafts are connected in the left-back direction and are connected in the right-back direction. The rotating shaft is connected to both ends of the synchronous rod (82) via two synchronous belts, which are vertically arranged; two longitudinal slide rails (85) are respectively arranged on two side plates (84), which are arranged in the left and right direction and are located below the first rotating shaft; two slide blocks (88) are respectively slidably arranged on the two longitudinal slide rails (85); two vertical arms (87) are both vertically arranged and their upper ends are respectively hinged to the upper ends of two swing arms (86) via a second rotating shaft in the front and back direction; two vertical slide rails are respectively arranged on the two vertical arms (87), which are respectively slidably arranged on the two slide blocks (88); the crossbeam (83) is arranged in the front and back direction, and its front and back ends are respectively fixedly connected to the lower ends of the two vertical arms (87); multiple suction cup assemblies (89) are arranged side by side on the crossbeam (83), which can move synchronously towards or away from each other, and their lower sides are provided with suction cups that can adsorb paper rulers.

9. The apparatus according to claim 8, characterized in that, If N is three, then the number of suction cup assemblies (89) is three; a transverse slide rail is provided on the crossbeam (83) along the front-back direction; one suction cup assembly (89) in the middle is fixedly installed, and the two suction cup assemblies (89) at both ends are slidably installed on the transverse slide rail; the crossbeam (83) is also provided with two suction cup cylinders that are driven synchronously; the two suction cup cylinders are both arranged along the front-back direction, and are respectively located on the left and right sides of the crossbeam (83), facing each other, and their extension rods are respectively connected to the two suction cup assemblies (89) at both ends; when the suction cup cylinders extend, the two suction cup assemblies (89) at both ends move away from the suction cup assembly (89) in the middle to form a disjointed state.

10. A method for adding a paper ruler online using the paper ruler online adding device of the medical dressing kit as described in any one of claims 1-9, characterized in that, The method includes: an unwinding structure (2) outputs a wide paper tape (1), which is processed by a front conveying structure (3), a tension adjustment structure (4), a cursor tracking structure (5), a longitudinal cutting structure (6), a rear conveying structure (7), and a transverse cutting structure (8) to obtain a paper ruler. The paper ruler falls onto a negative pressure plate (91) and covers the suction holes on the negative pressure plate (91). The negative pressure plate (91) moves inward while adsorbing the paper ruler through negative pressure. When the negative pressure plate (91) moves to the inner end, it stops adsorbing. The robot moves to the top of the negative pressure plate (91). At this time, N suction cup assemblies (89) are facing each other and are respectively located above the N paper rulers on the negative pressure plate (91). The robot moves to transfer the paper ruler to the top of the conveying structure. At this time, N suction cup assemblies (89) are separated and are respectively located above the N adjacent receiving slots. Two online adding components move alternately.

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