Folding device for sanitary towel production

Abstract

The utility model relates to a folding device for sanitary towel production. A feeding gap for clamping sanitary towels to be folded is formed between two sets of feeding pieces, the sanitary towels to be folded enter the upper end face of a conveying belt through the feeding gap, a folding assembly comprises a guide component and a folding wheel set which are connected to a back plate, and a guide plate of the guide component is located on the upper end face of the conveying belt in a vertical state. The upper end face of the guide plate is provided with a guide part which gradually retracts downwards in the direction of the feeding assembly in a curved surface mode, the guide part is divided into a high part and a low part, the folding wheel set comprises a first folding wheel and a second folding wheel, the edge of the first folding wheel faces the bottom of the low part, and the edge of the second folding wheel faces the bottom of the high part. According to the utility model, the sanitary napkins to be folded are fed into the conveying belt through the feeding gap, are driven by the conveying belt to enter the guide part, are folded into 90 degrees by the first folding wheel, and are folded by the second folding wheel, so that the internal damage of the sanitary napkins caused by pressing operation is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of sanitary napkin production equipment, and particularly relates to a folding device for sanitary napkin production. Background Art

[0002] In the production of sanitary napkins, after being laminated with various fabrics, the finished sanitary napkins are completed. If each sanitary napkin is flat and unfolded, it is not convenient for the overall packaging and subsequent transportation, and it is not convenient for consumers to carry it with them. Therefore, it is necessary to fold it and compress it into a small package as much as possible. However, today's production equipment generally completes the folding by pressing. Since the cotton core and the edges of the composite part in the sanitary napkin are relatively fragile, direct pressing will cause irreversible damage and easily lead to the production of defective products. Once the damaged part cannot be detected and is used by consumers, problems such as leakage detection will occur, affecting the product image. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a folding device for sanitary napkin production. The sanitary napkin to be folded is fed into a conveyor belt through a feed gap, and then driven by the conveyor belt into a guide part. After being folded into a 90° shape by a first folding wheel, it is folded in half by a second folding wheel, thereby avoiding internal damage to the sanitary napkin caused by the pressing operation.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A folding device for producing sanitary napkins includes a feeding assembly, a conveying assembly and a folding assembly arranged on a back plate. The feeding assembly includes two groups of feeding parts that correspond to each other in the upper and lower directions and are connected to the back plate. A feeding gap is formed between the two groups of feeding parts to clamp the sanitary napkin to be folded. The conveying assembly includes a conveyor belt arranged on the back plate. The sanitary napkin to be folded enters the upper end surface of the conveyor belt through the feeding gap.

[0006] The folding assembly includes a guide member and a folding wheel group respectively connected to the back plate, the guide member includes a guide plate, the guide plate is vertically located on the upper end surface of the conveyor belt, the upper end surface of the guide plate is provided with a guide portion that is curved and gradually retracts downward toward the feeding assembly, and the guide portion is divided into a high part and a low part; the bottom of the high part is provided with a guide groove, and the guide groove is curved and gradually retracts downward toward the feeding assembly; the guide plate is inclined along the conveying direction of the conveyor belt, and the high part gradually approaches the center line of the conveyor belt.

[0007] The folding wheel group includes a first folding wheel, a second folding wheel, a first guide wheel and a second guide wheel, the edge of the first folding wheel faces the bottom of the lower part, the edge of the second folding wheel faces the bottom of the high part, and the edge of the second folding wheel extends into the guide groove and does not contact the guide groove; the first guide wheel is located on the upper end surface of the conveyor belt and is between the first folding wheel and the second folding wheel; the second guide wheel is located on the upper end surface of the conveyor belt and is located at the end of the conveyor belt away from the feeding assembly, and the second guide wheel is between the second folding wheel and the guide plate.

[0008] In the folding device for producing sanitary napkins adopting this structure, the sanitary napkin to be folded passes through the feeding gap formed by two sets of feeding parts, and is conveyed to the direction of the conveyor belt in the synchronous transmission. After the sanitary napkin to be folded enters the conveyor belt, it is pushed by the conveyor belt. In order to achieve folding, the guide component on the conveyor belt is composed of a guide plate. The guide plate is vertically arranged on the conveyor belt, and the guide part of its upper end surface is gradually retracted downward toward the feeding component. Therefore, in the process of the sanitary napkin to be folded contacting the guide plate, one end of it will first contact the lower part, and in the process of the conveyor belt maintaining the conveyance, the one end moves along the direction from the lower part to the higher part, thereby lifting the one end so that it appears to be in contact with the guide plate. The plate is parallel to and perpendicular to the conveyor belt. This structure only guides the folding direction of the sanitary napkin to be folded. The sanitary napkin cannot be folded by this structure alone. Therefore, the first folding wheel is set with its edge facing the bottom of the lower part. Therefore, when the sanitary napkin to be folded passes through the first folding wheel, it will be folded for the first time during the abutment process. Therefore, a crease will be generated on the sanitary napkin to be folded after passing through the first folding wheel. However, after passing through the high part, the sanitary napkin to be folded can only maintain a 90° state and has not completed the folding. Therefore, in the process of continuing to convey, the second folding wheel is set to press the crease on the sanitary napkin to be folded into the guide groove at the lower end of the high part, so that the sanitary napkin to be folded is folded along the crease.

[0009] When the sanitary napkin to be folded enters the second folding wheel after the first folding is completed, the second folding wheel will push the sanitary napkin to be folded into the guide groove so that the upper end of the sanitary napkin to be folded can be folded toward the lower end. If the setting direction of the guide plate completely coincides with the conveying direction of the conveyor belt, it will inevitably cause the sanitary napkin to be folded to be displaced toward the guide plate, resulting in position deviation in the process of exporting the folded sanitary napkin. Therefore, the guide plate is tilted along the conveying direction of the conveyor belt so that the high part gradually approaches the center line of the conveyor belt. Therefore, before the sanitary napkin to be folded is folded for the second time, it will be slightly offset toward the center line of the conveyor belt. When entering the second folding wheel, the sanitary napkin to be folded will be pushed back to its original position by the pushing force in the direction of the guide groove.

[0010] Relying solely on the conveying force of the conveyor belt, the sanitary napkin to be folded located thereon will inevitably produce displacement during the folding and conveying process. Therefore, it is necessary to guide the conveying direction of the sanitary napkin to be folded. The first guide wheel is provided between the first folding wheel and the second folding wheel. Therefore, after the sanitary napkin to be folded completes the first folding, its unfolded end can be abutted by the first guide wheel to maintain the moving direction. After the sanitary napkin to be folded completes the second folding, it is necessary to keep the folded end and the unfolded end in contact. Therefore, a second guide wheel is provided between the second folding wheel and the guide plate. After the second folding is completed, the pressure of the second guide wheel can keep the sanitary napkin to be folded in a folded state for discharge.

[0011] Furthermore, the guide member also includes a rotating rod and a support seat, the support seat is arranged on the back plate, the guide plate is rotatably connected to the rotating rod, and the rotating rod is detachably connected to the support seat; the support seat is provided with an adjustment hole facing the back plate, and the rotating rod is detachably connected in the adjustment hole.

[0012] Furthermore, the conveying assembly also includes a guide plate, which is located on the upper end surface of the conveyor belt. One end of the guide plate is embedded in the feed gap and is close to the upper end surface of the feed piece located below.

[0013] Compared with the prior art, the advantages of the present invention are: through the guidance of the lower and higher parts on the guide plate, the sanitary napkin to be folded is pressed by the first folding wheel to produce an indentation and complete a 90° fold, and enters the area of ​​the second folding wheel under the guidance of the first guide wheel, and the second folding wheel presses the crease into the guide groove to complete the second folding, and with the assistance of the second guide wheel, the folded state of the sanitary napkin to be folded is maintained for discharge. This structure can ensure that the sanitary napkin to be folded is not folded in a pressed state, and can maintain the fit of the sanitary napkin connection to the greatest extent, avoiding damage to the sanitary napkin due to excessive pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a left-side top perspective view of the present invention;

[0016] Figure 2 It is a front view of the utility model;

[0017] Figure 3It is a top view of the utility model;

[0018] Figure 4 It is a right side top perspective view of the present invention.

[0019] Among them: 1. back plate; 2. feeding assembly; 21. feeding part; 22. feeding gap; 3. conveying assembly; 31. conveyor belt; 32. guide plate; 4. folding assembly; 41. guide member; 411. guide plate; 412. guide part; 4121. high part; 4122. low part; 4123. guide groove; 413. rotating rod; 414. support seat; 415. adjustment hole; 42. folding wheel group; 421. first folding wheel; 422. second folding wheel; 423. first guide wheel; 424. second guide wheel. DETAILED DESCRIPTION

[0020] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described clearly and completely below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.

[0021] The specific implementation of the present invention will be described below with reference to the accompanying drawings:

[0022] like Figure 1-4 As shown, a folding device for producing sanitary napkins includes a feeding assembly 2, a conveying assembly 3 and a folding assembly 4 arranged on a back plate 1, wherein the feeding assembly 2 includes two groups of feeding members 21 corresponding to each other in the upper and lower directions and connected to the back plate 1, and a feeding gap 22 for clamping the sanitary napkin to be folded is formed between the two groups of feeding members 21, and the conveying assembly 3 includes a conveyor belt 31 arranged on the back plate 1, and the sanitary napkin to be folded enters the upper end surface of the conveyor belt 31 through the feeding gap 22.

[0023] The folding component 4 includes a guide member 41 and a folding wheel group 42 respectively connected to the back plate 1, the guide member 41 includes a guide plate 411, the guide plate 411 is vertically located on the upper end surface of the conveyor belt 31, and the upper end surface of the guide plate 411 is provided with a guide portion 412 which is curved and gradually retracts downward toward the feeding component 2, and the guide portion 412 is divided into a high portion 4121 and a low portion 4122; the bottom of the high portion 4121 is provided with a guide groove 4123, and the guide groove 4123 is curved and gradually retracts downward toward the feeding component 2; the guide plate 411 is inclined along the conveying direction of the conveyor belt 31, and the high portion 4121 gradually approaches the center line of the conveyor belt 31.

[0024] The folding wheel group 42 includes a first folding wheel 421, a second folding wheel 422, a first guide wheel 423 and a second guide wheel 424. The edge of the first folding wheel 421 faces the bottom of the lower part 4122, the edge of the second folding wheel 422 faces the bottom of the high part 4121, and the edge of the second folding wheel 422 extends into the guide groove 4123 and does not contact the guide groove 4123; the first guide wheel 423 is located on the upper end surface of the conveyor belt 31 and is between the first folding wheel 421 and the second folding wheel 422; the second guide wheel 424 is located on the upper end surface of the conveyor belt 31 and is located at the end of the conveyor belt 31 away from the feeding assembly 2, and the second guide wheel 424 is between the second folding wheel 422 and the guide plate 411.

[0025] Furthermore, the guide member 41 also includes a rotating rod 413 and a support seat 414, the support seat 414 is arranged on the back panel 1, the guide plate 411 is rotatably connected to the rotating rod 413, and the rotating rod 413 is detachably connected to the support seat 414; the support seat 414 is provided with an adjustment hole 415 facing the direction of the back panel 1, and the rotating rod 413 is detachably connected in the adjustment hole 415.

[0026] Furthermore, the conveying assembly 3 also includes a guide plate 32, which is located on the upper end surface of the conveyor belt 31. One end of the guide plate 32 is embedded in the feed gap 22 and is close to the upper end surface of the feed member 21 located below.

[0027] Description of the working method of this utility model:

[0028] In the folding device for producing sanitary napkins with this structure, the sanitary napkins to be folded pass through the feed gap 22 formed by two groups of feed members 21, and the sanitary napkins to be folded are conveyed to the direction of the conveyor belt 31 in a synchronous transmission. After the sanitary napkins to be folded enter the conveyor belt 31, they are pushed by the conveyor belt 31. In order to achieve folding, the guide member 41 on the conveyor belt 31 is composed of a guide plate 411. The guide plate 411 is vertically arranged on the conveyor belt 31, and the guide portion 412 on the upper end face thereof is gradually retracted downward in the direction of the feed component 2. Therefore, in the process of the sanitary napkin to be folded contacting the guide plate 411, one end thereof will first contact the lower portion 4122, and in the process of the conveyor belt 31 maintaining the conveyance, the one end will move along the lower portion 4122 toward the higher portion 4121, thereby lifting the one end so that the sanitary napkins to be folded can be folded. It is in a state parallel to the guide plate 411 and perpendicular to the conveyor belt 31. This structure only guides the folding direction of the sanitary napkin to be folded. The sanitary napkin cannot be folded by this structure alone. Therefore, the first folding wheel 421 is set with its edge facing the bottom of the lower part 4122. Therefore, when the sanitary napkin to be folded passes through the first folding wheel 421, it will be folded for the first time during the abutment process. Therefore, a crease will be generated on the sanitary napkin to be folded after passing through the first folding wheel 421. However, after passing through the high part 4121, the sanitary napkin to be folded can only maintain a 90° state and has not completed the folding. Therefore, in the process of continuing to convey, the second folding wheel 422 is set to press the crease on the sanitary napkin to be folded into the guide groove 4123 at the lower end of the high part 4121, so that the sanitary napkin to be folded is folded along the crease.

[0029] When the sanitary napkin to be folded enters the second folding wheel 422 after the first folding is completed, the second folding wheel 422 will push the sanitary napkin to be folded into the guide groove 4123 so that the upper end of the sanitary napkin to be folded can be folded toward the lower end. If the setting direction of the guide plate 411 completely coincides with the conveying direction of the conveyor belt 31, the sanitary napkin to be folded will inevitably be displaced toward the guide plate 411, resulting in position deviation in the process of exporting the folded sanitary napkin. Therefore, the guide plate 411 is tilted along the conveying direction of the conveyor belt 31 so that the high part 4121 gradually approaches the center line of the conveyor belt 31. Therefore, before the sanitary napkin to be folded is folded for the second time, it will be slightly offset toward the center line of the conveyor belt 31. When entering the second folding wheel 422, the sanitary napkin to be folded will be pushed back to its original position by the pushing force in the direction of the guide groove 4123.

[0030] Relying solely on the conveying force of the conveyor belt 31, the sanitary napkin to be folded thereon will inevitably produce displacement during the folding and conveying process. Therefore, it is necessary to guide the conveying direction of the sanitary napkin to be folded. The first guide wheel 423 is provided between the first folding wheel 421 and the second folding wheel 422. Therefore, after the sanitary napkin to be folded completes the first folding, its unfolded end can be abutted by the first guide wheel 423 to maintain the moving direction. After the sanitary napkin to be folded completes the second folding, it is necessary to keep the folded end and the unfolded end in contact. Therefore, the second guide wheel 424 is provided between the second folding wheel 422 and the guide plate 411. After the second folding is completed, the pressure of the second guide wheel 424 can keep the sanitary napkin to be folded in a folded state for discharge.

[0031] Since the specifications and thicknesses of sanitary napkins are different, the distance between the guide plate 411 and the conveyor belt 31 should not remain fixed, but needs to be adjustable. In order to facilitate the change of the position of the guide plate 411, a rotating rod 413 and a support seat 414 are provided. The guide plate 411 is rotatably connected to the rotating rod 413, so that the angle between the guide plate 411 and the conveyor belt 31 can be adjusted. The rotating rod 413 can change the position of the guide plate 411 in the adjustment hole 415 of the support seat 414, thereby changing the relative position between the guide plate 411 and the conveyor belt 31, thereby adapting to different sanitary napkin production requirements. The rotating rod 413 can be fixed by a nut or other fixing method. This structure belongs to the prior art, so it will not be repeated here how to achieve detachable connection and fixation.

[0032] In addition, since there is a sunken space between the conveyor belt 31 and the feed gap 22, if this part of the space does not have corresponding structural support, the sanitary napkin to be folded cannot be properly transferred from the feed gap 22 to the conveyor belt 31. Therefore, a guide plate 32 is added, and the guide plate 32 is added to the support plates on both sides of the conveyor belt 31 for fixation, and the other end of the guide plate 32 is extended into the feed gap 22 and fits on the upper end surface of the feed piece 21 located below. Therefore, the sanitary napkin to be folded transferred from the feed gap 22 can smoothly enter the conveyor belt 31 for folding through the transition effect of the guide plate 32.

[0033] The beneficial effect of the present invention is that: through the guidance of the lower part 4122 and the upper part 4121 on the guide plate 411, the sanitary napkin to be folded is pressed by the first folding wheel 421 to produce an indentation and complete a 90° fold, and enters the area of ​​the second folding wheel 422 under the guidance of the first guide wheel 423, and the second folding wheel 422 presses the crease into the guide groove 4123 to complete the second folding, and with the assistance of the second guide wheel 424, the folded state of the sanitary napkin to be folded is maintained for discharge. This structure can ensure that the sanitary napkin to be folded is not folded in a pressed state, and can maintain the fit of the sanitary napkin connection to the greatest extent, avoiding damage to the sanitary napkin due to excessive pressure.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A folding device for producing sanitary napkins, comprising a feed assembly and a conveyor assembly disposed on a back plate, wherein the feed assembly comprises two sets of feed members corresponding to each other and connected to the back plate, a feed gap being formed between the two sets of feed members for holding the sanitary napkins to be folded, and the conveyor assembly comprises a conveyor belt disposed on the back plate, wherein the sanitary napkins to be folded enter the upper end surface of the conveyor belt through the feed gap, characterized in that: It also includes a folding assembly, which includes a guide member and a folding wheel group respectively connected to the back plate, the guide member includes a guide plate, the guide plate is vertically located on the upper end surface of the conveyor belt, and the upper end surface of the guide plate is provided with a guide portion that is curved and gradually retracts downward toward the feeding assembly, and the guide portion is divided into a high part and a low part. The folding wheel group includes a first folding wheel and a second folding wheel, the edge of the first folding wheel faces the bottom of the lower part, and the edge of the second folding wheel faces the bottom of the high part.

2. The folding device for producing sanitary napkins according to claim 1, characterized in that: A guide groove is provided at the bottom of the high portion, and the guide groove is curved and gradually retracts downward toward the feeding component.

3. The folding device for producing sanitary napkins according to claim 2, characterized in that: The edge of the second folding wheel extends into the guide groove and does not contact the guide groove.

4. The folding device for producing sanitary napkins according to claim 3, characterized in that: The guide plate is arranged obliquely along the conveying direction of the conveyor belt, and the high portion gradually approaches the center line of the conveyor belt.

5. The folding device for producing sanitary napkins according to claim 4, characterized in that: The guide member further comprises a rotating rod and a supporting seat, wherein the supporting seat is arranged on the back plate, the guide plate is rotatably connected to the rotating rod, and the rotating rod is detachably connected to the supporting seat.

6. The folding device for producing sanitary napkins according to claim 5, characterized in that: The support seat is provided with an adjustment hole facing the back plate, and the rotating rod is detachably connected in the adjustment hole.

7. The folding device for producing sanitary napkins according to claim 4, characterized in that: The folding wheel assembly further includes a first guide wheel, which is located on the upper end surface of the conveyor belt and is between the first folding wheel and the second folding wheel.

8. The folding device for producing sanitary napkins according to claim 7, characterized in that: The folding wheel assembly further includes a second guide wheel, which is located on the upper end surface of the conveyor belt and at the end of the conveyor belt away from the feeding assembly, and is interposed between the second folding wheel and the guide plate.

9. The folding device for producing sanitary napkins according to claim 1, characterized in that: The conveying assembly further comprises a guide plate, which is located on the upper end surface of the conveyor belt. One end of the guide plate is embedded in the feed gap and is close to the upper end surface of the feed member located below.

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