A coating machine for breathable medical dressing

Abstract

The present invention relates to the technical field of medical dressings and discloses a coater for breathable medical dressings, comprising a coater main body, a base and a flattening assembly, the base being slidably connected to the interior of the coater main body, the flattening assembly being arranged inside the base, the flattening assembly comprising a driven electric drive screw mounted on the outer wall of the base, the outer wall of the electric drive screw being symmetrically slidably connected to a sliding frame, the top of the sliding frame close to the base being slidably connected to the outer wall of the base, the middle part of the sliding frame close to the base being slidably connected to an air pumping bin, a first spring being fixedly connected between the sliding frame and the air pumping bin, a parallelogram slide groove being provided at the bottom of the inner cavity of the base; the silicone oil paper will be tightly fitted to the outer wall of the cavity through the action of negative pressure, and the cavity will produce a lateral flattening effect on the silicone oil paper during the movement process, so as to avoid curling of the silicone oil paper edge due to winding, resulting in the ointment not being completely filled on the same side of the silicone oil paper, thereby improving the spreading efficiency of the ointment.

Description

Technical Field

[0001] The invention relates to the technical field of medical dressings, in particular to a coating machine for breathable medical dressings. Background Art

[0002] In the field of medical dressing production, breathable medical dressings are widely used because they effectively keep wounds dry and promote healing. In the production process of breathable medical dressings, the coating machine is a key piece of equipment that evenly applies ointment onto carriers such as silicone oil paper. The coating effect directly affects the quality and performance of the dressing.

[0003] Traditional breathable medical dressing applicators have many problems in actual use. First, during the conveying and coating process, silicone oil paper is prone to curling and wrinkling due to winding or mechanical transmission. This prevents the ointment from being completely and evenly applied to the same side of the silicone oil paper. This not only reduces the ointment spreading efficiency but also causes uneven local coating of the dressing, affecting the effectiveness and safety of the dressing.

[0004] When applying the ointment, the distribution of the ointment on the surface of the silicone oil paper is often not concentrated enough. Although most of the ointment accumulates in the middle of the silicone oil paper, there is still a small amount of ointment remaining on the edge. It is difficult to uniformly control the subsequent leveling operation and it is difficult to ensure the flatness and uniformity of the ointment.

[0005] Existing coating machines have limited adaptability to the demands of applying ointments of varying thicknesses. When adjusting the thickness of the ointment, it's often difficult to simultaneously optimize both the coating effect and the air permeability. For example, increasing the thickness of the ointment might prevent the existing air permeability structure from ensuring that the air holes penetrate the ointment to the surface of the silicone paper, thus affecting the ointment's efficacy.

[0006] To this end, a coating machine for breathable medical dressing is proposed. Summary of the Invention

[0007] The object of the present invention is to provide a coating machine for breathable medical dressings to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a coater for breathable medical dressing, comprising a coater body, a base and a flattening assembly, the base being slidably connected to the inside of the coater body, the flattening assembly being arranged inside the base, the flattening assembly comprising a driven electric drive screw mounted on the outer wall of the base, the outer wall of the electric drive screw being symmetrically slidably connected to a sliding frame, the top of the sliding frame close to the base is slidably connected to the outer wall of the base, the middle part of the sliding frame close to the base is slidably connected to an air extraction chamber, the sliding frame and the air extraction chamber A first spring is fixedly connected between the air bins, a parallelogram slide groove is provided at the bottom of the inner cavity of the base, the bottom of the air pumping bin is slidably connected to the inside of the parallelogram slide groove, a cavity is provided inside the air pumping bin, a hose connected to the cavity is fixedly connected to the outer wall of the air pumping bin, a circular tube is slidably connected to the inside of the air pumping bin, double-sided through holes are provided on the top of the side wall of the circular tube, a single-sided through hole is provided on the bottom of the side wall of the circular tube, a second spring is fixedly connected between the bottom of the circular tube and the air pumping bin, and an L-shaped air inlet groove is provided on the top of the inner cavity of the base.

[0009] Preferably, when the first spring is not under stress, the air pumping bin is located at the midpoint of the side of the parallelogram slide groove, and the end of the hose away from the air pumping bin is connected to the external pressure pumping device, the single-sided through hole is opened on one side of the outer wall of the circular tube, and the double-sided through holes are opened symmetrically on the outer wall of the circular tube. When the top of the circular tube is connected to the L-shaped air inlet groove, the circular tube is connected to the cavity inside the air pumping bin through the single-sided through hole and the double-sided through holes are in a closed state. When the top of the circular tube is fitted and sealed with the top of the inner cavity of the base, the circular tube is connected to the cavity inside the air pumping bin through the double-sided through holes and the single-sided through hole is in a closed state.

[0010] Preferably, a gathering component is provided on the base, and the gathering component includes a sliding seat slidably connected to the upper surface of the base, a slide is slidably connected to the top of the base and located above the sliding seat, and the sliding seat and the sliding seat have opposite surfaces. The interior of the slide is slidably connected to a sliding rod, and the bottom of the sliding rod is fixedly connected to a first magnetic block, the inner cavity of the sliding seat is rotatably connected to a gear shaft, and the upper surface of the base is fixedly connected to a toothed belt distributed in a linear array, the gear shaft and the toothed belt are meshed, and the interior of the sliding seat and located above the gear shaft is rotatably connected to a second magnetic block, and a transmission belt is connected for transmission between the second magnetic block and the gear shaft.

[0011] Preferably, when the sliding seat is located on a side close to the middle of the base, the second magnetic block and the opposite side of the first magnetic block are in the same polarity state, and the top of the first magnetic block is in contact with the lower surface of the slide.

[0012] Preferably, a motor is installed inside the coater body, and a sliding assembly is provided inside the coater body. The inner wall of the coater body is symmetrically fixedly connected with a fixed disk, and a roller is rotatably connected between the outer walls of the two fixed disks. The outer wall of the roller is engaged with the motor drive shaft, and the opposite sides of the two fixed disks are slidably connected with a special-shaped sleeve, and the inner wall of the special-shaped sleeve is fixedly connected with a slider. The interior of the special-shaped sleeve is rotatably connected with a first screw rod, and the slider on the inner wall of the special-shaped sleeve is slidably connected to the outer wall of the first screw rod. The interior of the roller is distributed in a circular array and is slidably connected with a comb rack, and the side wall of the base is located on the side outside the coater body and is fixedly connected with a tooth plate, and the tooth plate is engaged with the first screw rod.

[0013] Preferably, the outer wall of the first screw is symmetrically provided with a thread groove with the center of the coater body as the center, the slider on the inner wall of the special-shaped sleeve slides in the thread groove on the outer wall of the first screw, and the side of the special-shaped sleeve away from the comb tooth frame is set to be conical and conflicts with the side wall of the comb tooth frame.

[0014] Preferably, silicone oil paper is transported inside the coating machine body, and the silicone oil paper is located between the sliding seat and the first magnetic block during transportation. The silicone oil paper is located between the roller and the base, and the comb rack separates the silicone oil paper and conflicts with the surface of the base.

[0015] Preferably, the descending distance of the base is the same as the moving distance of the comb tooth frame pushed by the special-shaped sleeve after the tooth plate and the first screw are engaged.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The negative pressure will make the silicone oil paper fit tightly with the outer wall of the cavity. The cavity will produce a horizontal flattening effect on the silicone oil paper during the movement process, avoiding the edge of the silicone oil paper from curling due to rolling, resulting in the ointment not being completely filled on the same side of the silicone oil paper, thereby improving the ointment spreading efficiency;

[0018] 2. The bottom of the first magnetic block and the top of the sliding seat will squeeze the silicone oil paper in both directions. As the sliding seat slides and the silicone oil paper bends, a small part of the ointment on the edge of the silicone oil paper will flow and accumulate in the middle as the sliding seat moves, so that the ointment is concentrated in the middle of the silicone oil paper, which makes it easier for the equipment to level the ointment on the silicone oil paper later.

[0019] 3. By increasing the distance between the base and the roller after the base moves downward and the first screw slides, the comb rack slides outward from the inside of the roller, so that the equipment can adaptively adjust the thickness of the ointment as needed. At the same time, the comb rack always keeps in contact with the outer wall of the base to ensure that when the ointment has different thicknesses, the air holes can penetrate the ointment to the surface of the silicone oil paper, thereby improving the volatilization effect of the ointment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a partially enlarged schematic diagram of the flattened component structure of the present invention;

[0022] Figure 3 This is an overall schematic diagram of the base structure of the present invention;

[0023] Figure 4 This is a partial exploded schematic diagram of the flattened component structure of the present invention;

[0024] Figure 5 It is a schematic cross-sectional view of the overall flattened assembly structure of the present invention;

[0025] Figure 6 For the present invention Figure 5 A schematic diagram of the structure at center A;

[0026] Figure 7 A partial schematic diagram of the gathering component structure of the present invention;

[0027] Figure 8 It is a partial cross-sectional schematic diagram of the gathering component structure of the present invention;

[0028] Figure 9 This is a partial exploded schematic diagram of the gathering component structure of the present invention;

[0029] Figure 10 This is a schematic diagram of the internal structure of the drum of the present invention;

[0030] Figure 11 It is a schematic cross-sectional view of the entire structure of the sliding assembly of the present invention.

[0031] In the picture:

[0032] 1. Coating machine body; 2. Base; 3. Flattening assembly; 4. Gathering assembly; 5. Motor; 6. Sliding assembly;

[0033] 31. Electric drive screw; 32. Sliding frame; 33. Air extraction chamber; 34. First spring; 35. Hose; 36. Parallelogram slide; 37. Cavity; 38. Circular tube; 39. Double-sided through-hole; 310. Single-sided through-hole; 311. Second spring; 312. L-shaped air inlet groove;

[0034] 41. Sliding seat; 42. Slide plate; 43. Sliding rod; 44. First magnetic block; 45. Gear shaft; 46. Toothed belt; 47. Transmission belt; 48. Second magnetic block;

[0035] 61. Fixed plate; 62. Roller; 63. Comb rack; 64. First screw rod; 65. Special-shaped sleeve; 66. Tooth plate. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] Embodiments of the present invention

[0038] See also Figures 1 to 6 A coating machine for breathable medical dressings includes a coating machine body 1, a base 2, and a flattening assembly 3. The base 2 is slidably connected to the inside of the coating machine body 1. The flattening assembly 3 is arranged inside the base 2. The flattening assembly 3 includes a driven electric drive screw 31 installed on the outer wall of the base 2. The outer wall of the electric drive screw 31 is symmetrically slidably connected to a sliding frame 32. The top of the sliding frame 32 close to the base 2 is slidably connected to the outer wall of the base 2. The middle part of the sliding frame 32 close to the base 2 is slidably connected to an air pumping bin 33. A first spring 34 is fixedly connected between the sliding frame 32 and the air pumping bin 33. A parallelogram slide groove 36 is provided at the bottom of the inner cavity of the base 2, and the bottom of the air pumping bin 33 is slidably connected to the inside of the parallelogram slide groove 36. A cavity 37 is provided inside the air pumping bin 33, and a hose 35 connected to the cavity 37 is fixedly connected to the outer wall of the air pumping bin 33. A circular tube 38 is slidably connected to the inside of the air pumping bin 33, and a double-sided through hole 39 is provided at the top of the side wall of the circular tube 38. A single-sided through hole 310 is provided at the bottom of the side wall of the circular tube 38. A second spring 311 is fixedly connected between the bottom of the circular tube 38 and the air pumping bin 33, and an L-shaped air inlet groove 312 is provided at the top of the inner cavity of the base 2.

[0039] When the first spring 34 is not under stress, the air pumping bin 33 is located at the midpoint of the side of the parallelogram slide groove 36, and the end of the hose 35 away from the air pumping bin 33 is connected to the external pressure pumping device. The single-sided through hole 310 is opened on one side of the outer wall of the circular tube 38, and the double-sided through holes 39 are opened symmetrically on the outer wall of the circular tube 38. When the top of the circular tube 38 is connected to the L-shaped air inlet groove 312, the circular tube 38 is connected to the cavity 37 inside the air pumping bin 33 through the single-sided through hole 310 and the double-sided through holes 39 are in a closed state. When the top of the circular tube 38 is sealed with the top of the inner cavity of the base 2, the circular tube 38 is connected to the cavity 37 inside the air pumping bin 33 through the double-sided through holes 39 and the single-sided through hole 310 is in a closed state.

[0040] In actual use of this embodiment, when the equipment is running, the injection machine will fill the ointment on the silicone oil paper, and the suction machine connected to the hose 35 will generate negative pressure inside the suction chamber 33 by pumping air. When the electric drive screw 31 on the base 2 is energized, it will rotate back and forth, thereby driving the sliding frame 32 on the electric drive screw 31 to slide back and forth on the outer wall of the base 2;

[0041] The sliding frame 32 will drive the vacuum chamber 33 to slide inside the parallelogram slide groove 36 under the guidance of the parallelogram slide groove 36. When the two symmetrical vacuum chambers 33 slide relatively away from each other on the side of the parallelogram slide groove 36 close to the roller 62, the top of the circular tube 38 is in contact with the top of the inner cavity of the base 2 and is in a blocked state. The second spring 311 is squeezed by the downward sliding of the circular tube 38 and is in an elastic contraction state. The double-sided through-holes 39 are no longer blocked due to the downward sliding of the circular tube 38. The negative pressure inside the vacuum chamber 33 is no longer blocked by the circular tube 38, and air can be sucked out of it through the side of the vacuum chamber 33 close to the silicone oil paper.

[0042] It can be seen from the movement trajectory of the above-mentioned air extraction chamber 33 that the two air extraction chambers 33 will slide laterally relative to each other on the side close to the silicone oil paper inside the base 2 and be in a negative pressure adsorption state on the silicone oil paper. The negative pressure effect will make the silicone oil paper fit tightly with the outer wall of the cavity 37. The cavity 37 will have a horizontal flattening effect on the silicone oil paper during the movement process, avoiding the edge of the silicone oil paper from curling due to rolling, resulting in the ointment not being completely filled on the same side of the silicone oil paper, thereby improving the spreading efficiency of the ointment.

[0043] When the air extraction chamber 33 slides on the parallelogram slide groove 36 to the edge of the parallelogram slide groove 36, the first spring 34 elastically contracts to make the air extraction chamber 33 slide inside the base 2 to the side away from the silicone oil paper, and then the electric drive screw 31 reverses to drive the air extraction chamber 33 to slide inside the sliding frame 32 on the side of the parallelogram slide groove 36 away from the roller 62, so that the air extraction chamber 33 and the silicone oil paper are out of contact. At this time, the second spring 311 inside the air extraction chamber 33 elastically stretches and pushes the round tube 38 to slide upward, so that the L-shaped air inlet groove 31 2 is connected to the inside of the circular tube 38, and the double-sided through holes 39 of the circular tube 38 are closed due to sliding upward, and the single-sided through hole 310 is now turned from closed to open, so that the negative pressure inside the air extraction chamber 33 can only be exhausted to the outside of the base 2 through the circular tube 38 and the L-shaped air inlet groove 312. At this time, the side of the L-shaped air inlet groove 312 close to the silicone oil paper will be in a stable adsorption state on the edge of the silicone oil paper, thereby ensuring that the silicone oil paper can maintain contact with the outer wall of the base 2 when the air extraction chamber 33 does not flatten the silicone oil paper, thereby improving the flatness of the silicone oil paper during coating.

[0044] See also Figures 7 to 9A gathering component 4 is provided on the base 2, and the gathering component 4 includes a sliding seat 41 slidably connected to the upper surface of the base 2, and a slide plate 42 is slidably connected to the top of the base 2 and located above the sliding seat 41. The opposite surfaces of the sliding seat 41 and the slide plate 42 are provided with magnetic strips with opposite magnetic poles, and the interior of the slide plate 42 is slidably connected to the slide rod 43, and the bottom of the slide rod 43 is fixedly connected to the first magnetic block 44. The inner cavity of the sliding seat 41 is rotatably connected to the gear shaft 45, and the upper surface of the base 2 is fixedly connected to the toothed belt 46 in a linear array. The gear shaft 45 and the toothed belt 46 are engaged with each other, and a second magnetic block 48 is rotatably connected to the interior of the sliding seat 41 and located above the gear shaft 45. A transmission belt 47 is connected between the second magnetic block 48 and the gear shaft 45.

[0045] When the sliding seat 41 is located near the middle of the base 2 , the second magnetic block 48 and the opposite side of the first magnetic block 44 are in the same polarity state, and the top of the first magnetic block 44 is in contact with the lower surface of the slide plate 42 .

[0046] When this embodiment is actually used, the movement of the sliding frame 32 will drive the sliding seat 41 to move together. When the silicone oil paper is filled with ointment and not flattened, most of the ointment will accumulate in the middle of the silicone oil paper. The silicone oil paper has ointment accumulated in the middle, and under the upward squeezing action of the sliding seats 41 on both sides, the middle of the silicone oil paper will bend downward on the base 2. When the sliding seat 41 slides relatively close to each other on the base 2, the magnetic poles of the second magnetic block 48 and the opposite sides of the first magnetic block 44 are oppositely magnetically attracted to each other. The bottom of the first magnetic block 44 and the top of the sliding seat 41 will squeeze the silicone oil paper in both directions, so that under the sliding action of the sliding seat 41 and the bending action of the silicone oil paper, a small part of the ointment on the edge of the silicone oil paper will flow to the middle and accumulate as the sliding seat 41 moves. , so that the ointment is concentrated in the middle of the silicone oil paper, thereby facilitating the later flattening of the ointment on the silicone oil paper. When the sliding seat 41 slides relative to the gear shaft 45 inside it and engages with the toothed belt 46, the gear shaft 45 rotates and drives the second magnetic block 48 to rotate together through the transmission belt 47. After the second magnetic block 48 rotates, the magnetic pole on the opposite side of the first magnetic block 44 is the same, and the magnetic repulsion occurs. The first magnetic block 44 will move upward and push the slide bar 43 to slide inside the slide plate 42, so that the first magnetic block 44 no longer presses on the upper surface of the silicone oil paper, thereby allowing the silicone oil paper to release the squeezing force generated by the first magnetic block 44 and the sliding seat 41 after it is clamped and slid, thereby ensuring that the silicone oil paper remains flat after the ointment is adjusted. When the sliding seat 41 and the sliding frame 32 move in the opposite direction together, the second magnetic block 48 will flip inside the sliding seat 41 and cause the first magnetic block 44 to move downward again to the squeezing state with the silicone oil paper, thereby tensioning the silicone oil paper in the opposite direction.

[0047] See also Figures 10 and 11A motor 5 is installed inside the coater body 1, and a sliding assembly 6 is arranged inside the coater body 1. The inner wall of the coater body 1 is symmetrically fixedly connected with a fixed disk 61, and a roller 62 is rotatably connected between the outer walls of the two fixed disks 61. The outer wall of the roller 62 is engaged with the drive shaft of the motor 5. The opposite sides of the two fixed disks 61 are slidably connected with a special-shaped sleeve 65, and the inner walls of the special-shaped sleeve 65 are fixedly connected with a slider. The interior of the special-shaped sleeve 65 is rotatably connected with a first screw rod 64, and the slider on the inner wall of the special-shaped sleeve 65 is slidably connected to the outer wall of the first screw rod 64. The interior of the roller 62 is distributed in a circular array and is slidably connected with a comb rack 63. The side wall of the base 2 is located on the side outside the coater body 1 and is fixedly connected with a tooth plate 66, which is engaged with the first screw rod 64.

[0048] The outer wall of the first screw rod 64 is symmetrically provided with a thread groove with the center of the coater body 1 as the center. The slider on the inner wall of the special-shaped sleeve 65 slides in the thread groove on the outer wall of the first screw rod 64. The side of the special-shaped sleeve 65 away from the comb tooth frame 63 is set to be conical and contacts the side wall of the comb tooth frame 63.

[0049] Silicone oil paper is transported inside the coating machine body 1 and is located between the sliding seat 41 and the first magnetic block 44 during transportation. The silicone oil paper is located between the roller 62 and the base 2, and the comb rack 63 is spaced apart from the silicone oil paper and contacts the surface of the base 2.

[0050] The descending distance of the base 2 is the same as the moving distance of the comb tooth frame 63 pushed by the special-shaped sleeve 65 after the tooth plate 66 and the first screw rod 64 are engaged.

[0051] When this embodiment is actually used, when the motor 5 is started, it will drive the roller 62 to rotate between the outer walls of the fixed disk 61. The thickness of the silicone oil paper is equal to the distance between the roller 62 and the base 2. When the ointment on the silicone oil paper passes through the roller 62, it will be flattened on the top of the silicone oil paper. The comb rack 63 will conflict with the silicone oil paper, so that the ointment on the silicone oil paper has multiple air holes after being flattened, thereby ensuring that the ointment efficacy can evaporate outward efficiently. When the thickness of the ointment on the silicone oil paper needs to be increased, the staff can slide the base 2 downward inside the coating machine body 1. The downward sliding of the base 2 drives the tooth plate 66 to slide downward together. The downward sliding of the tooth plate 66 will engage and drive the first screw rod 64 to rotate. After the first screw rod 64 rotates, the special-shaped sleeve 65 will be relatively close to the roller 62. When the base 2 moves, the tapered side of the special-shaped sleeve 65 will squeeze the comb frame 63, causing the comb frame 63 to slide out to the outside of the roller 62. At this time, because the lowering distance of the base 2 is the same as the moving distance of the comb frame 63 pushed by the special-shaped sleeve 65 after the tooth plate 66 and the first screw rod 64 are engaged, the comb frame 63 is in a state of contact with the outer wall of the base 2 through the silicone oil paper. After the base 2 moves downward, the distance between it and the roller 62 increases, and after the first screw rod 64 slides, the comb frame 63 slides outward inside the roller 62, so that the equipment can adaptively adjust the thickness of the ointment according to needs, and at the same time, the comb frame 63 always keeps in contact with the outer wall of the base 2, ensuring that when the ointment is of different thicknesses, the air vents can penetrate the ointment to the surface of the silicone oil paper, thereby improving the volatilization effect of the ointment.

[0052] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0053] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A coating machine for breathable medical dressing, comprising a coating machine body (1), a base (2) and a flattening assembly (3), characterized in that: The base (2) is slidably connected to the inside of the coating machine body (1), and the flattening component (3) is arranged inside the base (2). The flattening component (3) includes a driven electric drive screw (31) installed on the outer wall of the base (2), and the outer wall of the electric drive screw (31) is symmetrically slidably connected to a sliding frame (32). The top of the sliding frame (32) close to the base (2) is slidably connected to the outer wall of the base (2), and the middle of the sliding frame (32) close to the base (2) is slidably connected to an air pumping bin (33), and a first spring (34) is fixedly connected between the sliding frame (32) and the air pumping bin (33). A parallelogram slide groove (36) is provided at the bottom of the inner cavity of the base (2), and the bottom of the air pumping bin (33) is slidably connected to the inside of the parallelogram slide groove (36). A cavity (37) is provided inside the air pumping bin (33), and the outer wall of the air pumping bin (33) is fixedly connected to the cavity. (37) is connected to the hose (35), the interior of the air pumping chamber (33) is slidably connected to a round tube (38), the top of the side wall of the round tube (38) is provided with double-sided through holes (39), the bottom of the side wall of the round tube (38) is provided with a single-sided through hole (310), a second spring (311) is fixedly connected between the bottom of the round tube (38) and the air pumping chamber (33), the top of the inner cavity of the base (2) is provided with an L-shaped air inlet groove (312), the round tube When the top of the (38) is connected to the L-shaped air inlet groove (312), the circular tube (38) is connected to the cavity (37) inside the air pumping bin (33) through the single-sided through hole (310) and the double-sided through holes (39) are in a closed state. When the top of the circular tube (38) is fitted and sealed with the top of the inner cavity of the base (2), the circular tube (38) is connected to the cavity (37) inside the air pumping bin (33) through the double-sided through holes (39) and the single-sided through hole (310) is in a closed state.

2. The coating machine for breathable medical dressing according to claim 1, characterized in that: When the first spring (34) is not under stress, the air pumping chamber (33) is located at the midpoint of the side of the parallelogram slide groove (36), and the end of the hose (35) away from the air pumping chamber (33) is connected to the external pressure pumping device. The single-sided through hole (310) is opened on one side of the outer wall of the circular tube (38), and the double-sided through holes (39) are opened symmetrically on the outer wall of the circular tube (38).

3. The coating machine for breathable medical dressing according to claim 1, characterized in that: A gathering component (4) is provided on the base (2), and the gathering component (4) includes a sliding seat (41) slidably connected to the upper surface of the base (2), a slide plate (42) is slidably connected to the top of the base (2) and located above the sliding seat (41), and the opposite surfaces of the sliding seat (41) and the slide plate (42) are provided with magnetic strips with opposite magnetic poles, the interior of the slide plate (42) is slidably connected to a slide rod (43), the bottom of the slide rod (43) is fixedly connected to a first magnetic block (44), the inner cavity of the sliding seat (41) is rotatably connected to a gear shaft (45), the upper surface of the base (2) is fixedly connected to a toothed belt (46) distributed in a linear array, the toothed belt (45) and the toothed belt (46) are meshed, and a second magnetic block (48) is rotatably connected to the interior of the sliding seat (41) and located above the toothed shaft (45), and a transmission belt (47) is connected between the second magnetic block (48) and the gear shaft (45).

4. The coating machine for breathable medical dressing according to claim 3, characterized in that: When the sliding seat (41) is located on a side close to the middle of the base (2), the second magnetic block (48) and the opposite side of the first magnetic block (44) are in a same polarity state, and the top of the first magnetic block (44) is in contact with the lower surface of the slide plate (42).

5. The coating machine for breathable medical dressing according to claim 4, characterized in that: A motor (5) is installed inside the coating machine body (1), and a sliding assembly (6) is provided inside the coating machine body (1). The inner wall of the coating machine body (1) is symmetrically fixedly connected to a fixed disk (61), and a roller (62) is rotatably connected between the outer walls of the two fixed disks (61). The outer wall of the roller (62) is engaged with the transmission shaft of the motor (5). The opposite sides of the two fixed disks (61) are slidably connected to a special-shaped sleeve (65), and the inner wall of the special-shaped sleeve (65) is fixedly connected to a slider. The inside of the special-shaped sleeve (65) is rotatably connected to a first screw rod (64), and the slider on the inner wall of the special-shaped sleeve (65) is slidably connected to the outer wall of the first screw rod (64). The inside of the roller (62) is distributed in an annular array and is slidably connected to a comb rack (63). The side wall of the base (2) is located on the side outside the coating machine body (1) and is fixedly connected to a tooth plate (66), and the tooth plate (66) is engaged with the first screw rod (64).

6. The coating machine for breathable medical dressing according to claim 5, characterized in that: The outer wall of the first screw rod (64) is provided with a thread groove symmetrically with respect to the center of the coating machine body (1), and the slider on the inner wall of the special-shaped sleeve (65) slides in the thread groove on the outer wall of the first screw rod (64). The side of the special-shaped sleeve (65) away from the comb tooth frame (63) is set to be conical and contacts the side wall of the comb tooth frame (63).

7. The coating machine for breathable medical dressing according to claim 6, characterized in that: Silicone oil paper is transported inside the coating machine body (1). When transported, the silicone oil paper is located between the sliding seat (41) and the first magnetic block (44). The silicone oil paper is located between the roller (62) and the base (2). The comb rack (63) separates the silicone oil paper and contacts the surface of the base (2).

8. The coating machine for breathable medical dressing according to claim 6, characterized in that: The descending distance of the base (2) is the same as the moving distance of the comb tooth frame (63) pushed by the special-shaped sleeve (65) after the tooth plate (66) and the first screw rod (64) are engaged.

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