Nursing pad width folding device for medical dressing production line
By using a combination of folding retaining rollers and folding rods on the nursing pad production line, the complexity of the equipment caused by the nursing pad folding device is solved, achieving stable and efficient nursing pad folding and simplifying the equipment layout, which facilitates automated packaging.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING DAKE IND CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-05-19
Smart Images
Figure CN224257956U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of nursing pad production equipment technology, and in particular to a nursing pad width folding device for a medical dressing production line. Background Technology
[0002] The nursing pad consists of a three-layer structure of non-woven fabric, cotton core, and cast film. After a series of processing steps, the non-woven fabric, cotton core, and cast film form the raw material strip of the nursing pad. The raw material strip is then cut to form individual nursing pads. In order to facilitate the packaging of the nursing pads, they need to be folded. Before the raw material strip is cut to form the nursing pads, it is folded along the width direction of the raw material strip to form the fold of the nursing pad.
[0003] Chinese patent application CN102529317A discloses a folding device. In this patent, a folding wheel divides a material strip into overlapping sub-strips through tangential contact, forming a longitudinal fold. A discharge roller changes its running direction via a vertical rotation axis, traction the material strip through the gap for stable output. The distance between the two is adjustable to accommodate different widths. Combined with a longitudinal cutting device, the sub-strips can be cut and separated synchronously. In existing technologies, because the gap of the sub-strip during folding is perpendicular to the moving support surface of the sub-strip before folding, the sub-strips before and after folding are vertically arranged. To accommodate the conveying of the folded sub-strips, the conveying equipment (such as motors, rollers, conveyor belts, etc.) requires a more complex spatial layout and mechanical structure design during installation, increasing the complexity of sub-strip equipment installation. Utility Model Content
[0004] To address the issue of increased equipment installation complexity due to the vertical arrangement of sub-belts before and after folding, this application provides a nursing pad width folding device for a medical dressing production line.
[0005] The present application provides a nursing pad width folding device for a medical dressing production line, which adopts the following technical solution:
[0006] A nursing pad width folding device for a medical dressing production line includes a folding assembly and a folding support. The folding assembly includes a folding retaining roller and a folding rod. The folding support has a support surface for placing and fitting a raw material strip. The raw material strip can slide on the folding support under the traction of a traction mechanism. The folding retaining roller is rotatably mounted on a frame, and the folding rod is fixedly mounted on the frame. Both the folding retaining roller and the folding rod are located on the side of the raw material strip away from the folding support.
[0007] The raw material strip located on the folding support is divided into a base section and a flipping section along its own width direction. The folding holding roller can keep the base section in contact with the folding support. The folding rod can guide the flipping section to flip onto the base section so that the folding gap of the raw material strip is parallel to the moving plane of the raw material strip before folding.
[0008] By adopting the above technical solution, during the folding of the raw material strip in the width direction, when the raw material strip passes through the folding support, the folding maintaining roller keeps the base section in contact with the folding support frame, and the flipping section guided by the folding rod flips onto the base section, so that the folding gap of the raw material strip remains parallel to the moving plane of the raw material strip before folding. This allows the conveying equipment of the folded raw material strip to adopt the same spatial layout and mechanical structure design as the conveying equipment of the raw material strip before folding, improving the convenience of equipment installation.
[0009] Preferably, the folding rod includes a front rod section and a rear rod section. The front rod section is located below the flipping section and can guide the flipping section to flip to be perpendicular to the base section. The rear rod section is located above the flipping section so as to flip the flipping section onto the base section.
[0010] By adopting the above technical solution, the front rod section guides the flipping section to flip up to be perpendicular to the base section, and the rear rod section further flips the flipping section onto the base section, so that the raw material strip can be folded in a specific order, effectively ensuring the smoothness and stability of the raw material strip folding process.
[0011] Preferably, the distance between the front rod section and the support surface is L, and the distance between the bottom of the folding retaining roller and the support surface is M, then M <L Max .
[0012] By adopting the above technical solution, it can be ensured that the folding holding roller effectively maintains the base section and the folding support, while allowing the front rod section to better guide the flipping section, further ensuring that the folding gap of the raw material strip is parallel to the moving plane of the raw material strip before folding, making the folding process smoother and more efficient.
[0013] Preferably, L gradually decreases along the direction of movement of the raw material belt.
[0014] By adopting the above technical solution, the front section of the folding rod can better guide the flipping section to flip gradually, making the folding process of the raw material strip smoother, further ensuring that the folding gap remains parallel to the moving plane of the raw material strip before folding, and better adapting to the moving state of the raw material strip, thereby improving folding efficiency and quality.
[0015] Preferably, the folding support includes a conveyor roller and a conveyor belt. The conveyor roller is rotatably connected to the frame, and the conveyor belt is wrapped around the conveyor roller and forms a support surface on the conveyor belt that fits against the raw material belt. The moving speed of the conveyor belt is the same as the moving speed of the raw material belt.
[0016] By adopting the above technical solution, the conveyor belt can drive the raw material belt to move smoothly, avoiding wrinkles or deviations in the raw material belt during the folding process due to the difference in speed between the two, and ensuring the smooth operation of the folding operation in the width direction of the raw material belt.
[0017] Preferably, there are two sets of folding components, which are arranged along the moving direction of the raw material belt. The flipping section consists of two parts, which are located on both sides of the base section. The two sets of folding components can flip and fold the two flipping sections onto the base section respectively.
[0018] By adopting the above technical solution, the flipping sections on both sides of the raw material belt can be folded simultaneously, which improves the efficiency of folding the width of the nursing pad and makes the structure of the folded nursing pad more symmetrical and regular, which is beneficial to the subsequent packaging process.
[0019] Preferably, the bottom of the downstream folding retaining roller is lower than the upstream support surface.
[0020] By adopting the above technical solution, the creases on the folded raw material belt are more obvious when it enters the downstream folding component. This can prevent the folded flip section from separating from the base section during the conveying process, ensuring the stability of the folding effect and keeping the nursing pad in a good folded state in subsequent processes.
[0021] Preferably, a pressure plate corresponding to each of the folding components is fixed on the frame. The pressure plate is located above the raw material strip and can prevent the raw material strip from detaching from the support surface.
[0022] By adopting the above technical solution, during the folding process of the raw material belt, the pressure plate on the conveyor belt is used to restrict the flipping section folded on the base section, which can effectively prevent the flipping section from separating from the base section and ensure the stability of the folding state of the raw material belt.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. The base section is kept in contact with the folding support by the folding retaining roller, and the folding rod guides the flipping section to flip to the base section, so that the folding gap of the raw material belt is parallel to the moving plane before folding, avoiding the complex layout of the conveying equipment after folding and reducing the difficulty of equipment installation;
[0025] 2. Ensuring stability during the folding process facilitates large-scale production of nursing pads and improves the efficiency of the folding process;
[0026] 3. Makes the nursing pads folded neatly and aesthetically pleasing, facilitating subsequent automated packaging operations. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the structure of a nursing pad width folding device for a medical dressing production line according to an embodiment of this application.
[0028] Figure 2 This is a structural diagram used to demonstrate the folding support component.
[0029] Figure 3 It is a schematic diagram showing the distribution of the base section and the overturning section on the raw material strip.
[0030] Figure 4 It is a schematic diagram showing a structure in which a flipped section is folded onto a base section.
[0031] Figure 5 It is a schematic diagram showing the structure of two flipped segments folded onto the base segment.
[0032] Figure 6 This is a schematic diagram showing the structure of the folding rod.
[0033] Figure 7 It is a schematic diagram showing the spatial relationship between the front rod segment and the support surface in a three-dimensional coordinate system.
[0034] Figure 8 It is a diagram showing the positional relationship between the folding support roller and the support surface.
[0035] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Folding assembly; 21. Folding holding roller; 22. Folding rod; 221. Front rod section; 222. Rear rod section; 223. Bending section; 3. Folding support; 31. Conveyor roller; 32. Conveyor belt; 33. Support surface; 4. Raw material belt; 41. Base section; 42. Tilting section; 43. Folding gap; 5. Pressure plate. Detailed Implementation
[0036] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.
[0037] This application discloses a nursing pad width folding device for a medical dressing production line.
[0038] Reference Figure 1 A nursing pad width folding device for a medical dressing production line includes a folding component 2 and a folding support 3. In this embodiment, there are two sets of folding components 2 and folding support 3. The two sets of folding components 2 are arranged along the moving direction of the raw material belt 4, and the folding support 3 corresponds to the folding components 2 one by one.
[0039] Reference Figure 1 , Figure 2 In this embodiment, the folding support 3 includes a conveyor roller 31 and a conveyor belt 32. The conveyor roller 31 is rotatably connected to the frame 1 and is driven to rotate by a motor mounted on the frame 1. The conveyor belt 32 is wrapped around the conveyor roller 31 and tensioned, so that the conveyor roller 31 and the conveyor belt 32 rotate synchronously. The top portion of the conveyor belt 32 forms a support surface 33. The raw material belt 4 slides and adheres to the support surface 33 under the traction of a traction mechanism, which is a traction roller.
[0040] Reference Figure 1 , Figure 3 The raw material belt 4 located on the conveyor belt 32 is divided into a base section 41 and a flipping section 42 along its width direction. In this embodiment, the flipping section 42 consists of two parts, located on both sides of the base section 41. Each flipping section 42 occupies one-quarter of the width of the raw material belt 4, and the base section 41 occupies two-quarters of the raw material belt 4. The upstream folding assembly 2 is located on one side of the corresponding conveyor belt 32 and flips the flipping section 42 on one side of the base section 41 onto the base section 41. The downstream folding assembly 2 is located on the other side of the corresponding conveyor belt 32 and flips the flipping section 42 on the other side of the base section 41 onto the base section 41. The two sets of folding assemblies 2 fold the raw material belt 4 in the width direction using a gate-shaped folding method.
[0041] Reference Figure 1 Each folding assembly 2 includes a folding retaining roller 21 and a folding rod 22. The folding retaining roller 21 is rotatably mounted on the frame 1, and the folding retaining roller 21 is mounted at the front end of the corresponding conveyor belt 32.
[0042] Reference Figure 4 The end of the folding retaining roller 21, located upstream, extends to three-quarters of the length of the raw material belt 4, allowing a portion of the flipped section 42 and the base section 41 on the raw material belt 4 to slide onto the conveyor belt 32 via the folding retaining roller 21, maintaining this portion of the flipped section 42 and the base section 41 in contact with the conveyor belt 32. A folding rod 22 is fixedly mounted on the frame 1 and located on another portion of the flipped section 42. When this portion of the flipped section 42 passes the folding rod 22, the folding rod 22 guides the flipped section 42 to flip onto the base section 41, making the folding gap 43 of the raw material belt 4 parallel to the moving plane of the raw material belt 4 before folding.
[0043] Reference Figure 1 , Figure 5The downstream folding retaining roller 21 extends from the other side of the conveyor belt 32 onto the base section 41. After passing the upstream folding assembly 2, the base section 41 and the flipped section 42 folded onto the base section 41 pass through the downstream folding retaining roller 21 and enter the downstream conveyor belt 32. The bottom height of the downstream folding retaining roller 21 is lower than the height of the end of the upstream conveyor belt 32, so that when the raw material belt 4 passes the end of the upstream conveyor belt 32, it uses its own tension to pull the folded flipped section 42 tightly onto the base section 41, making the flipped section 42 fit more tightly with the base section 41 and improving the folding effect of the raw material belt 4. The downstream folding rod 22 guides the undone flipped section 42 to flip onto the remaining quarter of the base section 41, completing the folding of the entire raw material belt 4.
[0044] During the width-direction folding of the raw material belt 4, when the raw material belt 4 passes the upstream conveyor belt 32, the folding holding roller 21 maintains the base section 41 and a portion of the flipped section 42 in contact with the conveyor belt 32. The folding rod 22 guides the other portion of the flipped section 42 to flip onto the base section 41, so that the folding gap 43 of the raw material belt 4 remains parallel to the moving plane of the raw material belt 4 before folding, thus completing the folding of a portion of the flipped section 42. When the raw material belt 4 passes the downstream conveyor belt 32, the downstream folding holding roller 21 maintains the entire base section 41 in contact with the downstream conveyor belt 32. The downstream folding rod 22 guides the folded unfolded section 42 to flip onto the base section 41, so that the folding gap 43 of the raw material belt 4 remains parallel to the moving plane of the raw material belt 4 before folding, thus completing the width-direction folding of the raw material belt 4. By keeping the folded gap 43 parallel to the moving plane of the raw material belt 4 before folding, the conveying equipment of the folded raw material belt 4 can adopt the same spatial layout and mechanical structure design as the conveying equipment of the raw material belt 4 before folding, thereby improving the convenience of equipment installation.
[0045] Reference Figure 6 In this embodiment, the folding rod 22 includes a front rod segment 221 and a rear rod segment 222. The front rod segment 221 and the rear rod segment 222 are connected by a bending portion 223, and the bending portion 223 is located at the connection between the flipping section 42 and the base section 41. The front rod segment 221 is located below the flipping section 42. The angle between the projection line M of the front rod segment 221 on the support surface 33 and the opposite direction N of the moving direction of the conveyor belt 32 is α. In this embodiment, α = 30°.
[0046] Reference Figure 7 , Figure 8The angle between the front rod section 221 and the support surface 33 is β. In this embodiment, β = 45°, which makes L gradually decrease along the moving direction of the raw material belt 4. The front rod section 221 can better guide the flipping section 42 to flip gradually, making the folding process of the raw material belt 4 smoother. It further ensures that the folding gap 43 is parallel to the moving plane of the raw material belt 4 before folding, and can better adapt to the moving state of the raw material belt 4, thereby improving folding efficiency and quality.
[0047] Reference Figure 7 , Figure 8 The rear rod segment 222 is located above the flipping segment 42 that folds into the base segment 41. The distance between the front rod segment 221 and the support surface 33 is L, and the distance between the bottom of the folding holding roller 21 and the support surface 33 is M. Then M <L Max This ensures that the folding holding roller 21 effectively maintains the base section 41 in contact with the folding support 3, while allowing the front rod section 221 to better guide the flipping section 42, further ensuring that the folding gap 43 of the raw material belt 4 is parallel to the moving plane of the raw material belt 4 before folding, making the folding process smoother and more efficient.
[0048] The front rod section 221 is located below the flipping section 42. When the flipping section 42 moves to the bending part 223, the front rod section 221 guides the flipping section 42 to flip to be perpendicular to the base section 41 and tilt towards the base section 41. The rear rod section 222 tilts towards the center of the base section 41 along the moving direction of the raw material belt 4. When the flipping section 42 flows through the rear rod section 222, the rear rod section 222 guides the flipping section 42 to flip onto the base section 41, thereby realizing the flipping and folding of the flipping section 42.
[0049] The conveyor belt 32 moves at the same speed as the raw material belt 4, so that the conveyor belt 32 can drive the raw material belt 4 to move smoothly. This avoids wrinkles or deviations in the raw material belt 4 during the folding process due to the difference in speed between the two, and ensures the smooth operation of the folding operation in the width direction of the raw material belt 4.
[0050] Reference Figure 1 A pressure plate 5 is fixedly installed on the frame 1. The pressure plate 5 corresponds one-to-one with the folding assembly 2. The pressure plate 5 is located above the raw material belt 4 and is in contact with the raw material belt 4 flowing through the folding holding roller 21, maintaining the contact between the raw material belt 4 and the conveyor belt 32. The upstream pressure plate 5 is in contact with the flipping section 42 of the flowing folding holding roller 21. The downstream pressure plate 5 is in contact with the folded flipping section 42, keeping the folded flipping section 42 in close contact with the base section 41. During the folding process of the raw material belt 4, the pressure plate 5 on the conveyor belt 32 presses down on the flipping section 42 folded on the base section 41, which can effectively prevent the flipping section 42 from separating from the base section 41 and ensure the stability of the folded state of the raw material belt 4.
[0051] The implementation principle of the nursing pad width folding device for a medical dressing production line according to this application embodiment is as follows: During the width folding process of the raw material belt 4, when the raw material belt 4 passes the upstream conveyor belt 32, the folding maintaining roller 21 maintains the base section 41 and a part of the flipped section 42 in contact with the conveyor belt 32. The folding rod 22 guides the other part of the flipped section 42 to flip onto the base section 41, so that the folding gap 43 of the raw material belt 4 remains parallel to the moving plane of the raw material belt 4 before folding, thus completing the folding of a part of the flipped section 42. When the raw material belt 4 passes the downstream conveyor belt 32, the downstream folding maintaining roller 21 maintains the entire base section 41 in contact with the downstream conveyor belt 32. The downstream folding rod 22 guides the unfolded flipped section 42 to flip onto the base section 41, so that the folding gap 43 of the raw material belt 4 remains parallel to the moving plane of the raw material belt 4 before folding, thus completing the width folding of the raw material belt 4. By keeping the folded gap 43 parallel to the moving plane of the raw material belt 4 before folding, the conveying equipment of the folded raw material belt 4 can adopt the same spatial layout and mechanical structure design as the conveying equipment of the raw material belt 4 before folding, thereby improving the convenience of equipment installation.
[0052] 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 folding device for the width of a nursing pad used in a medical dressing production line, characterized in that: The system includes a folding assembly (2) and a folding support (3). The folding assembly (2) includes a folding retaining roller (21) and a folding rod (22). The folding support (3) has a support surface (33) for placing and fitting the raw material belt (4). The raw material belt (4) can slide on the folding support (3) under the traction of the traction mechanism. The folding retaining roller (21) is rotatably mounted on the frame (1). The folding rod (22) is fixedly mounted on the frame (1). The folding retaining roller (21) and the folding rod (22) are both located on the side of the raw material belt (4) away from the folding support (3). The raw material strip (4) located on the folding support (3) is divided into a base section (41) and a flipping section (42) along its own width direction. The folding holding roller (21) can keep the base section (41) in contact with the folding support (3). The folding rod (22) can guide the flipping section (42) to flip onto the base section (41) so that the folding gap (43) of the raw material strip (4) is parallel to the moving plane of the raw material strip (4) before folding.
2. The nursing pad width folding device for medical dressing production line according to claim 1, characterized in that: The folding rod (22) includes a front rod section (221) and a rear rod section (222). The front rod section (221) is located below the flip section (42) and can guide the flip section (42) to flip to be perpendicular to the base section (41). The rear rod section (222) is located above the flip section (42) so as to flip the flip section (42) onto the base section (41).
3. The nursing pad width folding device for medical dressing production line according to claim 2, characterized in that: The distance between the front rod section (221) and the support surface (33) is L, and the distance between the bottom of the folding retaining roller (21) and the support surface (33) is M, then M <L Max .
4. The nursing pad width folding device for medical dressing production line according to claim 3, characterized in that: L gradually decreases along the moving direction of the raw material belt (4).
5. The nursing pad width folding device for a medical dressing production line according to claim 1, characterized in that: The folding support (3) includes a conveyor roller (31) and a conveyor belt (32). The conveyor roller (31) is rotatably connected to the frame (1). The conveyor belt (32) is wrapped around the conveyor roller (31) and forms a support surface (33) on the conveyor belt (32) that is in contact with the raw material belt (4). The moving speed of the conveyor belt (32) is the same as the moving speed of the raw material belt (4).
6. The nursing pad width folding device for a medical dressing production line according to claim 1, characterized in that: The number of folding components (2) is two sets, and the two sets of folding components (2) are arranged along the moving direction of the raw material belt (4). The flipping section (42) is two parts, and the two parts of the flipping section (42) are located on both sides of the base section (41). The two sets of folding components (2) can flip and fold the two parts of the flipping section (42) onto the base section (41) respectively.
7. The nursing pad width folding device for a medical dressing production line according to claim 6, characterized in that: The bottom of the downstream folding retaining roller (21) is lower than the upstream support surface (33).
8. The nursing pad width folding device for a medical dressing production line according to claim 7, characterized in that: A pressure plate (5) corresponding to the folding assembly (2) is fixed on the frame (1). The pressure plate (5) is located above the raw material belt (4) and can restrict the raw material belt (4) from detaching from the support surface (33).