A folding mechanism and folding device for the length of a nursing pad used in a medical dressing production line.

Abstract

This application relates to a folding mechanism and folding device for a nursing pad used in a medical dressing production line. It pertains to the field of hygiene product processing equipment and includes an infeed conveying assembly, an outfeed conveying assembly, and a tail support. A folding space is formed between the tail support and the end of the infeed conveying assembly, and a folding conveying channel is formed inside the outfeed conveying assembly. The infeed conveying assembly conveys the nursing pad and covers it within the folding space. The application also includes a drive mechanism and two folding plates connected to each other, causing the two folding plates to rotate continuously in one direction. Both folding plates push the middle portion of the nursing pad through the folding space and insert it into the folding conveying channel, thus folding the nursing pad. The infeed conveying assembly then conveys the folded nursing pad within the folding conveying channel to the downstream process. This application offers the advantages of eliminating the need for a complex swing mechanism, reducing moving parts, lowering the mechanical failure rate, and improving the stability of the folding mechanism during long-term, high-frequency folding.

Description

Technical Field

[0001] This application relates to the field of hygiene product processing equipment, and in particular to a nursing pad length folding mechanism and folding device for a medical dressing production line. Background Technology

[0002] The nursing pad consists of a three-layer structure: non-woven fabric, a cotton core (wood pulp paper, SAP, wood pulp cotton, wood pulp paper), and a cast film. The cotton core acts as an interlayer between the non-woven fabric and the cast film, and is bonded to both using hot melt adhesive. The medical dressing production line is specifically designed for producing medical nursing pads. After the cotton core is made, adhesive is applied to both the cast film and the non-woven fabric surfaces. The adhesive-coated surfaces of the cast film and the non-woven fabric are then bonded to the front and back of the cotton core, respectively, thus creating the nursing pad. After the nursing pad is manufactured, it is first folded in width, then cut, and then folded in length. After folding in both width and length, the nursing pads are ready for packaging.

[0003] Utility model patent CN206232209U discloses a longitudinal folding mechanism for a single-piece wet wipe processing device. A first conveyor belt transports the wet wipes, cut into individual pieces, to the vicinity of the folding plate's actuating end. The unfolded wet wipes fall vertically to this point. The folding plate rotates rapidly and continuously, its actuating end acting approximately on the middle of the wet wipe. After longitudinal folding, the wet wipe is then conveyed by the folding plate to a second conveyor belt for the next process. In existing technology, the folding plate needs to continuously reciprocate to push the wet wipe to the second conveyor belt. However, the hinged ends are prone to loosening or wear under high-frequency rotation, resulting in poor long-term operational stability. This leads to poor stability of the folding mechanism under long-term, high-frequency folding. Utility Model Content

[0004] In order to improve the problem of poor stability of folding mechanisms under long-term high-frequency folding, this application provides a nursing pad length folding mechanism and folding device for medical dressing production line.

[0005] The technical solution provided in this application for a nursing pad length folding mechanism for a medical dressing production line is as follows:

[0006] A nursing pad length folding mechanism for a medical dressing production line includes an infeed conveying component, an outfeed conveying component, and a tail support. A folding space is formed between the tail support and the end of the infeed conveying component. A folding conveying channel opposite to the folding space is formed inside the outfeed conveying component. The infeed conveying component can convey the nursing pad and cover the folding space.

[0007] It also includes a drive mechanism and two folding plates, both of which are rotatably connected to the frame. The drive mechanism is connected to the two folding plates so that the two folding plates can rotate continuously in one direction. Both folding plates can push the middle part of the nursing pad through the folding space and insert it into the folding conveying channel so that the nursing pad can be folded. The feeding conveying assembly can convey the folded nursing pad in the folding conveying channel to the downstream process.

[0008] By adopting the above technical solution, during the folding process of the nursing pad, the feeding conveying component transports the nursing pad and covers it on the folding space. Then, the drive mechanism drives two folding plates to rotate, and both folding plates push the middle part of the nursing pad through the folding space and insert it into the folding conveying channel, so that the two ends of the nursing pad are folded. The discharging conveying component transports the folded nursing pad to the downstream process, completing one fold of the nursing pad. Compared with the prior art, this application folds the nursing pad by driving two folding plates to rotate continuously in one direction through the drive mechanism. It eliminates the need for a complex swing mechanism, reduces moving parts, lowers the mechanical failure rate, and improves the stability of the folding mechanism during long-term high-frequency folding.

[0009] Preferably, the drive mechanism includes a servo motor and a reverse transmission component. The servo motor is fixedly mounted on the frame and connected to the two folding plates through the reverse transmission component, so that the two folding plates can rotate in opposite directions.

[0010] By adopting the above technical solution, the servo motor drives the two folding plates to rotate in opposite directions through the reverse transmission component. When folding the nursing pad, the two folding plates can move simultaneously from the middle of the nursing pad to both sides, so that the pulling effect of the folding plates on the nursing pad cancels each other out, effectively preventing the nursing pad from moving laterally, thereby maintaining the accuracy of the folding position of the nursing pad.

[0011] Preferably, the reverse transmission component includes transmission gears, each corresponding to one of the folding plates. The transmission gears are coaxially fixed on the rotation shaft of the folding plates. The output shaft of the servo motor is coaxially fixedly connected to the rotation shaft of one of the folding plates. The two transmission gears are connected by an even number of meshing intermediate gears.

[0012] By adopting the above technical solution, the two folding plates can be rotated in opposite directions easily and reliably by using mutually meshing transmission gears and intermediate gears, ensuring that the folding action is coordinated and consistent. At the same time, this structure is simple and compact, easy to install and maintain, and further improves the stability and reliability of the folding mechanism.

[0013] Preferably, the folding plate has a contact surface that contacts the nursing pad.

[0014] By adopting the above technical solution, the contact curved surface makes contact with the nursing pad, allowing the folding plate to slide more smoothly on the nursing pad, effectively preventing the folding plate from tearing the nursing pad and maintaining the integrity of the nursing pad.

[0015] Preferably, the rotation radius of each folding plate is R, and the distance between the rotation centers of two folding plates is 2R.

[0016] By adopting the above technical solution, the rotation radius of the folding plate and the distance between the rotation center are set so that the two folding plates can cooperate precisely when rotating, thereby increasing the sliding length of the folding plate on the nursing pad and improving the folding effect of the nursing pad.

[0017] Preferably, the feeding and conveying assembly includes two sets of first conveyor belt mechanisms, with the nursing pad located between the two first conveyor belt mechanisms, and the two first conveyor belt mechanisms are capable of clamping and conveying the nursing pad.

[0018] By adopting the above technical solution, the two sets of first conveyor belt mechanisms can clamp and convey the nursing pad, which can ensure the stability of the nursing pad during the conveying process, avoid the nursing pad from shifting or shaking, and make the nursing pad more accurately cover the folding space, providing a good foundation for subsequent folding operations.

[0019] Preferably, the discharge conveying assembly includes two sets of second conveyor belt mechanisms, the folding conveying channel is located between the two second conveyor belt mechanisms, and the two second conveyor belt mechanisms drive the folded nursing pad to move.

[0020] By adopting the above technical solution, the folding conveyor channel is clamped by two sets of second conveyor belt mechanisms, which can stably and reliably drive the movement of the folded nursing pad, ensuring that the nursing pad smoothly enters the downstream process, and also helps to maintain the shape of the nursing pad after folding and improve the stability of the folding effect.

[0021] A nursing pad length folding device for a medical dressing production line includes three sets of nursing pad length folding mechanisms. The three sets of folding mechanisms are arranged sequentially, and the feed conveying component of the downstream folding mechanism is the discharge conveying component of the upstream folding mechanism, so as to be able to fold the nursing pad three times.

[0022] By adopting the above technical solution, and utilizing three sets of sequentially arranged nursing pad length folding mechanisms connected to the upstream and downstream folding mechanism conveying components, the nursing pad can be folded three times continuously, improving folding efficiency and increasing the regularity and consistency of the nursing pad folding.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The drive mechanism drives the two folding plates to rotate continuously in one direction to fold the nursing pad. There is no complex swing mechanism, which reduces moving parts and lowers the probability of mechanical failure.

[0025] 2. The feeding conveyor assembly conveys the nursing pad to cover the folding space. The drive mechanism makes the two folding plates rotate continuously in one direction, pushing the middle part of the nursing pad through the folding space and into the folding conveyor channel. The discharging conveyor assembly sends the folded nursing pad to the downstream process, realizing the folding of the nursing pad.

[0026] 3. Set the rotation radius and the distance between the rotation center of the folding plate so that the two folding plates can cooperate precisely when rotating, increase the sliding length of the folding plate on the nursing pad, and improve the folding effect of the nursing pad. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a nursing pad length folding mechanism for a medical dressing production line according to an embodiment of this application.

[0028] Figure 2 It is a diagram showing the positional relationship between the infeed conveyor and the outfeed conveyor.

[0029] Figure 3 This is a schematic diagram showing the connection between the drive mechanism and the folding plate.

[0030] Figure 4 It shows the positional relationship between the two folding panels.

[0031] Figure 5 This is a schematic diagram of the structure of a nursing pad length folding device for a medical dressing production line according to an embodiment of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Feed conveying assembly; 21. First conveyor belt mechanism; 211. First rotating roller; 212. First conveyor belt; 3. Discharge conveying assembly; 31. Folding conveying channel; 32. Second conveyor belt mechanism; 321. Second rotating roller; 322. Second conveyor belt; 4. Tail support; 41. Support plate; 5. Drive mechanism; 51. Servo motor; 52. Reverse transmission component; 521. Transmission gear; 522. Intermediate gear; 53. Contact surface; 6. Folding plate; 61. Rotating shaft; 71. Folding space; 8. Nursing pad; 9. Folding mechanism. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0034] This application discloses a nursing pad length folding mechanism for a medical dressing production line.

[0035] The applicant discovered that in the existing folding mechanism, the folding plate needs to continuously rotate back and forth to push the wet wipe to the second conveyor belt during the folding process of the nursing pad 8. However, the hinge end is prone to loosening or wear under high-frequency rotation, resulting in poor long-term operational stability. This leads to the problem of poor stability of the folding mechanism under long-term high-frequency folding. To address this, this application adopts a unidirectional rotation drive folding plate 6 to fold the nursing pad 8, achieving the effects of reducing moving parts, lowering the failure rate, and improving folding stability.

[0036] Reference Figure 1 , Figure 2 A nursing pad length folding mechanism for a medical dressing production line includes an infeed conveying component 2, an outfeed conveying component 3, a tail support 4, a drive mechanism 5, and two folding plates 6. A folding space 71 is formed between the tail support 4 and the end of the infeed conveying component 2. A folding conveying channel 31 opposite to the folding space 71 is formed inside the outfeed conveying component 3. The infeed conveying component 2 conveys the nursing pad 8 and covers it on the folding space 71, so that the middle position of the nursing pad 8 along the length direction is opposite to the folding plate 6. Both folding plates 6 are rotatably connected to the frame 1. The drive mechanism 5 is connected to the two folding plates 6, so that the two folding plates 6 rotate continuously in one direction. When folding the nursing pad 8, both folding plates 6 can push the middle part of the nursing pad 8 through the folding space 71 and insert it into the folding conveying channel 31, so that the two ends of the nursing pad 8 along the length direction are folded. The infeed conveying component 2 conveys the folded nursing pad 8 in the folding conveying channel 31 to the downstream process.

[0037] During the folding process of the nursing pad 8, the feeding conveying assembly 2 conveys the nursing pad 8 and covers it on the folding space 71. Then, the drive mechanism 5 drives the two folding plates 6 to rotate. Both folding plates 6 push the middle part of the nursing pad 8 through the folding space 71 and insert it into the folding conveying channel 31, so that the two ends of the nursing pad 8 are folded. The discharge conveying assembly 3 conveys the folded nursing pad 8 to the downstream process, completing one folding of the nursing pad 8. Compared with the prior art, this application uses the drive mechanism 5 to drive the two folding plates 6 to fold the nursing pad 8 by rotating continuously in one direction. This eliminates the need for a complex swing mechanism, reduces the number of moving parts, lowers the mechanical failure rate, and improves the stability of the folding mechanism 9 during long-term high-frequency folding.

[0038] Reference Figure 1 , Figure 2The feeding conveying assembly 2 includes two sets of first conveyor belt mechanisms 21. Each set of first conveyor belt mechanisms 21 includes a first rotating roller 211 and a first conveyor belt 212. The number of first rotating rollers 211 can be set as needed, but at least two are required. In this embodiment, one set of first rotating rollers 211 has four rollers, and the other set has six rollers. Each first rotating roller 211 is rotatably mounted on the frame 1. One of the first rotating rollers 211 is connected to a motor mounted on the frame 1, so that the motor drives the rotating roller to rotate. The first conveyor belt 212 is wrapped around each first rotating roller 211 and tensioned. The motor drives the first conveyor belt 212 to rotate by driving the first rotating roller 211 to rotate. There are opposing portions of the two first conveyor belts 212. The nursing pad 8 is located between the opposing portions of the two first conveyor belts 212, which clamps the nursing pad 8 and conveys the nursing pad 8 one by one to the folding space 71.

[0039] Reference Figure 1 , Figure 2 The tail support 4 is a support plate 41 fixedly installed on the frame 1. The support plate 41 is located at the tail end of the feeding conveying assembly 2 and is set along the moving direction of the nursing pad 8. Its height is slightly lower than the discharge height of the nursing pad 8 at the end of the feeding conveying assembly 2, so that the front end of the nursing pad 8 can move more reliably onto the support plate 41.

[0040] Reference Figure 1 , Figure 2 Both folding plates 6 are rotatably connected to the frame 1 via a rotating shaft 61. One end of the folding plate 6 is fixedly mounted on the rotating shaft 61. The rotating shaft 61 is mounted on the frame 1 with bearings. The rotation centers of the two folding plates 6 are located on both sides of the moving direction of the nursing pad 8. The rotation planes of the two folding plates 6 are coplanar. This plane passes through the folding space 71 and the folding conveying channel 31, so that the two folding plates 6 can push the middle part of the nursing pad 8 through the folding space 71 and insert it into the folding conveying channel 31.

[0041] Reference Figure 1 , Figure 3In this embodiment, the drive mechanism 5 includes a servo motor 51 and a reverse transmission component 52. The servo motor 51 is fixedly mounted on the frame 1 and connected to two folding plates 6 via the reverse transmission component 52 to drive the two folding plates 6 to rotate in opposite directions. The reverse transmission component 52 includes two externally meshing transmission gears 521, each corresponding to a folding plate 6. The transmission gears 521 are coaxially fixedly mounted on the rotation shaft 61 of the folding plate 6. The output shaft of the servo motor 51 is connected to the rotation shaft 61 of one of the folding plates 6 via a reducer to drive one rotation shaft 61 to rotate. In this embodiment, the two transmission gears 521 are connected by two intermediate gears 522. The two intermediate gears 522 mesh with each other and with the two transmission gears 521 respectively. Each intermediate gear 522 is rotatably connected to the frame 1 via a gear shaft, so that the rotation directions of the two folding plates 6 are opposite. By using the mutually meshing transmission gear 521 and intermediate gear 522, the two folding plates 6 can be rotated in opposite directions in a simple and reliable manner, ensuring that the folding action is coordinated and consistent. At the same time, this structure is simple and compact, easy to install and maintain, and further improves the stability and reliability of the folding mechanism 9.

[0042] When the nursing pad 8 is folded, the servo motor 51 drives one of the rotating shafts 61 to rotate. Since the two rotating shafts 61 are connected by a pair of meshing transmission gears 521, the two folding plates 6 rotate in opposite directions. The two folding plates 6 can move from the middle of the nursing pad 8 to both sides at the same time, so that the pulling effect of the folding plates 6 on the nursing pad 8 cancels each other out, effectively preventing the nursing pad 8 from moving laterally, thereby maintaining the accuracy of the folding position of the nursing pad 8.

[0043] Reference Figure 4 The rotation radius of each folding plate 6 is set to R, and the distance between the rotation centers of two folding plates 6 is 2R. Setting the rotation radius and the distance between the rotation centers of the folding plates 6 allows the two folding plates 6 to cooperate precisely when rotating, increasing the sliding length of the folding plates 6 on the nursing pad 8 and improving the folding effect of the nursing pad 8.

[0044] Reference Figure 3 , Figure 4 The folding plate 6 is provided with a contact surface 53 that contacts the nursing pad 8. The contact surface 53 is located at the contact end between the folding plate 6 and the nursing pad 8. By using the contact surface 53 to contact the nursing pad 8, the folding plate 6 can slide more smoothly on the nursing pad 8, effectively preventing the folding plate 6 from tearing the nursing pad 8 and maintaining the integrity of the nursing pad 8.

[0045] Reference Figure 1 , Figure 2In this embodiment, the discharge conveying assembly 3 includes two sets of second conveyor belt mechanisms 32. Each set of second conveyor belt mechanisms 32 includes a second rotating roller 321 and a second conveyor belt 322. The number of second rotating rollers 321 can be set as needed, but at least two are required. One set has two second rotating rollers 321, and the other set has three. Each second rotating roller 321 is rotatably mounted on the frame 1. One of the second rotating rollers 321 is connected to a motor mounted on the frame 1, so that the motor drives the second rotating roller 321 to rotate. The second conveyor belt 322 is wrapped around each second rotating roller 321 and tensioned. The motor drives the second conveyor belt 322 to rotate by driving the second rotating roller 321 to rotate. The two second conveyor belts 322 have oppositely arranged portions, and the folding conveying channel 31 is located between the oppositely arranged portions of the two second conveyor belts 322. When the nursing pad 8 is located between the folding conveyor channels 31, the two second conveyor belts 322 clamp the folded nursing pad 8 and transport the nursing pad 8 one by one to the subsequent processing steps.

[0046] The implementation principle of the nursing pad length folding mechanism for a medical dressing production line according to an embodiment of this application is as follows: During the folding process of the nursing pad 8, two first conveyor belt mechanisms 21 transport the nursing pad 8 and cover it on the folding space 71. At this time, the middle part of the nursing pad 8 is located at the folding space 71. Then, the servo motor 51 drives the two folding plates 6 to rotate in opposite directions. Both folding plates 6 push the middle part of the nursing pad 8 through the folding space 71 and insert it into the folding conveyor channel 31, so that the two ends of the nursing pad 8 are folded. The two second conveyor belt mechanisms 32 transport the folded nursing pad 8 to the downstream process, completing one folding of the nursing pad 8. Compared with the prior art, this application uses the servo motor 51 to drive the two folding plates 6 to fold the nursing pad 8 by rotating continuously in one direction. This eliminates the need for a complex swing mechanism, reduces the number of moving parts, lowers the mechanical failure rate, and improves the stability of the folding mechanism 9 during long-term high-frequency folding.

[0047] This application discloses a nursing pad length folding device for a medical dressing production line.

[0048] Reference Figure 5 A length-folding device for a medical dressing production line includes three sets of the aforementioned length-folding mechanisms 9. The three sets of folding mechanisms 9 are arranged sequentially. The infeed conveying component 2 of the downstream folding mechanism 9 serves as the outfeed conveying component 3 of the upstream folding mechanism 9, enabling the movement of the nursing pad 8 on the folding production line. The first conveyor belt 212 and the second conveyor belt 322 in the three sets of folding mechanisms 9 can share resources to achieve continuous conveying of the nursing pad 8. By folding the nursing pad 8 three times along its length using the three sets of folding mechanisms 9, the folding efficiency is improved, and the regularity and consistency of the folded nursing pad 8 are increased.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A nursing pad length folding mechanism for a medical dressing production line, characterized in that: It includes an infeed conveying assembly (2), an outfeed conveying assembly (3), and a tail support (4). A folding space (71) is formed between the tail support (4) and the end of the infeed conveying assembly (2). A folding conveying channel (31) is formed inside the outfeed conveying assembly (3) opposite to the folding space (71). The infeed conveying assembly (2) can convey a nursing pad (8) and cover the folding space (71). It also includes a drive mechanism (5) and two folding plates (6), both of which are rotatably connected to the frame (1). The drive mechanism (5) is connected to the two folding plates (6) so that the two folding plates (6) can rotate continuously in one direction. Both folding plates (6) can push the middle part of the nursing pad (8) through the folding space (71) and insert it into the folding conveying channel (31) so that the nursing pad (8) can be folded. The feeding conveying assembly (2) can convey the folded nursing pad (8) in the folding conveying channel (31) to the downstream process.

2. The nursing pad length folding mechanism for a medical dressing production line according to claim 1, characterized in that: The drive mechanism (5) includes a servo motor (51) and a reverse transmission component (52). The servo motor (51) is fixedly mounted on the frame (1) and connected to the two folding plates (6) through the reverse transmission component (52) so that the two folding plates (6) can rotate in opposite directions.

3. The nursing pad length folding mechanism for a medical dressing production line according to claim 2, characterized in that: The reverse transmission component (52) includes a transmission gear (521), which corresponds one-to-one with the folding plate (6). The transmission gear (521) is coaxially fixed on the rotation shaft (61) of the folding plate (6). The output shaft of the servo motor (51) is coaxially fixedly connected to the rotation shaft (61) of one of the folding plates (6). The two transmission gears (521) are connected by an even number of meshing intermediate gears (522).

4. The nursing pad length folding mechanism for a medical dressing production line according to claim 1, characterized in that: The folding plate (6) is provided with a contact surface (53) that contacts the nursing pad (8).

5. The nursing pad length folding mechanism for a medical dressing production line according to claim 1, characterized in that: The radius of rotation of each folding plate (6) is R, and the distance between the centers of rotation of two folding plates (6) is 2R.

6. The nursing pad length folding mechanism for a medical dressing production line according to claim 1, characterized in that: The feeding conveying assembly (2) includes two sets of first conveyor belt mechanisms (21), and the nursing pad (8) is located between the two first conveyor belt mechanisms (21). The two first conveyor belt mechanisms (21) are capable of clamping and conveying the nursing pad (8).

7. The nursing pad length folding mechanism for a medical dressing production line according to claim 1, characterized in that: The discharge conveying assembly (3) includes two sets of second conveyor belt mechanisms (32), and the folding conveying channel (31) is located between the two second conveyor belt mechanisms (32). The two second conveyor belt mechanisms (32) drive the folded nursing pad (8) to move.

8. A nursing pad length folding device for a medical dressing production line, characterized in that: The device includes three sets of nursing pad length folding mechanisms for a medical dressing production line as described in any one of claims 1-7. The three sets of folding mechanisms (9) are arranged in sequence, and the feed conveying component (2) of the downstream folding mechanism (9) is the discharge conveying component (3) of the upstream folding mechanism (9) so as to be able to fold the nursing pad (8) three times.

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