A method for producing a sanitary article

Abstract

This invention discloses an embossing mechanism for a flexible production line for manufacturing sanitary products, relating to the field of sanitary product embossing technology. The embossing section of this invention can process sanitary products of any width and can emboss various patterns on the surface of the sanitary products, giving them the characteristics of flexible production. By driving both ends of the embossing rotating shaft to rotate simultaneously, both ends of the embossing rotating shaft are subjected to force simultaneously, preventing the embossing rotating shaft from twisting and reducing misalignment between adjacent embossing sections. By setting the rotational linear velocity of the embossing section to be the same as the linear velocity of the support belt, dragging of the sanitary products is prevented.

Description

Technical Field

[0001] This invention relates to the field of embossing technology for hygiene products, specifically an embossing mechanism for a flexible production line for manufacturing hygiene products. Background Technology

[0002] Non-woven fabrics and plastic films are the most commonly used materials in the production of hygiene products. Non-woven fabrics are particularly active in the medical and protective fields. They are not only convenient and hygienic to use, but also effectively prevent bacterial and iatrogenic cross-infection. They can be used to produce masks, surgical caps, disposable surgical gowns, disposable medical sheets, maternity bags, as well as diapers, sterilization wraps, facial masks, wet wipes, sanitary napkins, panty liners, and disposable sanitary cloths. Although non-woven fabric is called "fabric," it is not actually a true cloth, but rather a plastic-like product. The main component of non-woven fabric is fiber, usually synthetic fibers such as polyester, polypropylene, and polyethylene, which can melt and deform when heated. Therefore, the surface of non-woven fabric can undergo plastic deformation when heated. For example, the product nameplate patterns on masks, diapers, and panty liners are created using embossing. Some of these products have the nameplate pattern embossed on the surface plastic film, while others have the nameplate pattern embossed on both the plastic film and the inner non-woven fabric. However, existing embossing mechanisms used in hygiene products can only emboss a single pattern, not multiple patterns. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides the following technical solution: an embossing mechanism for a flexible production line for manufacturing hygiene products, comprising a drive unit, the drive unit including a mounting frame, a guide slide rod slidably mounted on the mounting frame, an embossing frame fixedly mounted on the guide slide rod, an embossing rotating shaft rotatably mounted on the embossing frame, a dual-output shaft gearbox fixedly mounted on the embossing frame, and a drive shaft fixedly mounted on each of the two output shafts of the dual-output shaft gearbox, the two drive shafts being connected to the two ends of the embossing rotating shaft via two drive belts (allowing the embossing rotating shaft to...). Both ends are subjected to force simultaneously to prevent the embossing rotating shaft from twisting and further reduce the misalignment between two adjacent embossing parts. Several stacked embossing parts are fixedly installed on the embossing rotating shaft along the axial direction. Each embossing part includes an embossing disk with several sliding wells and ventilation holes of the same number as the sliding wells. The ventilation holes are used to connect the sliding wells to the outside. An electromagnet is fixedly installed in each sliding well, and a tension spring is fixedly installed on the electromagnet. An embossing protrusion that slides with the inner wall of the sliding well is fixedly installed on the tension spring.

[0004] Preferably, an adjusting electric cylinder is also fixedly installed on the mounting frame, and a support beam is fixedly installed at the end of the telescopic rod of the adjusting electric cylinder. Compensating slide rods are slidably installed at both ends of the support beam, and both compensating slide rods are fixedly installed on the embossing frame.

[0005] Preferably, both of the aforementioned compensating slide rods are surrounded by compensating springs, which are disposed between the support beam and the embossing frame, and compensating limiting plates are fixedly installed at the top of both compensating slide rods.

[0006] Preferably, a drive assembly is also fixedly installed on the support beam. The drive assembly includes a drive motor bracket, on which a drive motor is mounted via four elastic components (the two ends of the elastic components are fixedly connected to the drive motor and the drive motor bracket), and a splined shaft is fixedly installed on the output shaft of the drive motor.

[0007] Preferably, an output sliding block is fixedly installed on the input shaft of the dual output shaft gearbox, a spline sleeve is slidably installed on the spline shaft via splines, an input sliding block is fixedly installed on the spline sleeve, and the input sliding block and the output sliding block are slidably connected by an intermediate sliding block (the sliding direction between the output sliding block and the intermediate sliding block is set at a 90-degree angle to the sliding direction between the input sliding block and the intermediate sliding block).

[0008] It also includes a support pulley bracket, on which two symmetrically arranged support pulleys are rotatably mounted and connected by a support belt. A support plate for supporting the support belt is fixedly mounted on the support pulley bracket.

[0009] Preferably, two single-output shaft gearboxes are fixedly installed on the support pulley bracket. The two single-output shaft gearboxes are symmetrically arranged about the center point of the support belt, and the output shafts of the single-output shaft gearboxes are fixedly connected to the corresponding support pulleys.

[0010] Preferably, passive friction wheels are fixedly installed on the input shafts of both single-output-shaft gearboxes, and active friction wheels are fixedly installed at both ends of the embossing rotating shaft, with the active friction wheels and passive friction wheels engaging in frictional rolling cooperation.

[0011] Compared with the prior art, the present invention has the following advantages: (1) The embossing part set in the present invention can process sanitary products of any width, and can also emboss various different patterns on the surface of sanitary products, giving it the characteristics of flexible production; (2) The present invention drives the two ends of the embossing rotating shaft to rotate at the same time, so that the two ends of the embossing rotating shaft are subjected to force at the same time, preventing the embossing rotating shaft from twisting and reducing the misalignment between two adjacent embossing parts; (3) The present invention sets the rotational linear speed of the embossing part to be the same as the linear speed of the support belt, preventing dragging of sanitary products. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0013] Figure 2 This is a side view of the overall structure of the present invention.

[0014] Figure 3 This is a schematic diagram of the structure at the support beam of the present invention.

[0015] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at point A in the middle.

[0016] Figure 5 This is a schematic diagram of the structure of the middle sliding block in this invention.

[0017] Figure 6 This is a schematic diagram of the embossed part structure of the present invention.

[0018] Figure 7 For the present invention Figure 6 Schematic diagram of the structure at point B.

[0019] In the diagram: 101-Support pulley bracket; 102-Support belt; 103-Single output shaft gearbox; 104-Passive friction wheel; 105-Support pulley; 106-Support plate; 201-Mounting bracket; 202-Guide slide rod; 203-Adjusting electric cylinder; 204-Embossing frame; 205-Drive belt; 206-Compensating slide rod; 207-Compensating limit plate; 208-Compensating compression spring; 209-Support beam; 210-Dual output shaft gearbox; 2 11-Drive shaft; 212-Active friction wheel; 213-Irregularized rotating shaft; 301-Drive motor bracket; 302-Elastic component; 303-Drive motor; 304-Splined shaft; 305-Splined sleeve; 306-Input sliding block; 307-Intermediate sliding block; 308-Output sliding block; 401-Irregularized disc; 4011-Ventilation hole; 4012-Sliding well; 402-Electromagnet; 403-Tension spring; 404-Irregularized protrusion. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1-7 The technical solution of the present invention will be further illustrated through specific embodiments.

[0021] This invention provides an embossing mechanism for a flexible production line for manufacturing hygiene products. The drive unit includes a mounting frame 201, a guide rod 202 slidably mounted on the mounting frame 201, an embossing frame 204 fixedly mounted on the guide rod 202, an embossing rotating shaft 213 rotatably mounted on the embossing frame 204, and a dual-output shaft gearbox 210 fixedly mounted on the embossing frame 204. Each of the two output shafts of the dual-output shaft gearbox 210 has a drive shaft 211 fixedly mounted on it. The two drive shafts 211 are connected to both ends of the embossing rotating shaft 213 via two transmission belts 205 (to ensure that both ends of the embossing rotating shaft 213 are simultaneously stressed, preventing the embossing rotating shaft 213 from collapsing). (Twisting, reducing misalignment between adjacent embossing parts) Several stacked embossing parts are fixedly installed axially on the embossing rotating shaft 213. An adjusting electric cylinder 203 is also fixedly installed on the mounting frame 201. A support beam 209 is fixedly installed at the end of the telescopic rod of the adjusting electric cylinder 203. Compensating slide rods 206 are slidably installed at both ends of the support beam 209. Both compensating slide rods 206 are fixedly installed on the embossing frame 204. Compensating springs 208 are wrapped around both compensating slide rods 206. The compensating springs 208 are located between the support beam 209 and the embossing frame 204. Compensating limiting plates 207 are fixedly installed at the top of both compensating slide rods 206.

[0022] A drive assembly is also fixedly installed on the support beam 209. The drive assembly includes a drive motor bracket 301. A drive motor 303 is mounted on the drive motor bracket 301 via four elastic components 302 (the two ends of the elastic components 302 are fixedly connected to the drive motor 303 and the drive motor bracket 301). A splined shaft 304 is fixedly installed on the output shaft of the drive motor 303. An output sliding block 308 is fixedly installed on the input shaft of the dual output shaft gearbox 210. A splined sleeve 305 is slidably mounted on the splined shaft 304 via splines. An input sliding block 306 is fixedly installed on the splined sleeve 305. The input sliding block 306 and the output sliding block 308 are slidably connected via an intermediate sliding block 307 (the sliding direction between the output sliding block 308 and the intermediate sliding block 307 is set at a 90-degree angle to the sliding direction between the input sliding block 306 and the intermediate sliding block 307).

[0023] The embossing part includes an embossing disk 401, on which a plurality of sliding wells 4012 are provided. The embossing disk 401 also has the same number of vent holes 4011 as the sliding wells 4012. The vent holes 4011 are used to connect the sliding wells 4012 to the outside. Each sliding well 4012 is fixedly installed with an electromagnet 402. A tension spring 403 is fixedly installed on the electromagnet 402. An embossing protrusion 404 that slides and engages with the inner wall of the sliding well 4012 is fixedly installed on the tension spring 403. A heating wire is provided inside the embossing protrusion 404.

[0024] It also includes a support pulley bracket 101, on which two symmetrically arranged support pulleys 105 are rotatably mounted. The two support pulleys 105 are connected by a support belt 102. A support plate 106 for supporting the support belt 102 is fixedly mounted on the support pulley bracket 101. Two single-output shaft gearboxes 103 are fixedly mounted on the support pulley bracket 101. The two single-output shaft gearboxes 103 are symmetrically arranged about the center point of the support belt 102. The output shafts of the single-output shaft gearboxes 103 are fixedly connected to the corresponding support pulleys 105. A passive friction wheel 104 is fixedly mounted on the input shaft of each of the two single-output shaft gearboxes 103. An active friction wheel 212 is fixedly mounted on both ends of the embossing rotating shaft 213. The active friction wheel 212 and the passive friction wheel 104 are in frictional rolling cooperation.

[0025] The working principle of the embossing mechanism of a flexible production line for producing sanitary products disclosed in this invention is as follows: The mounting frame 201 and the support pulley bracket 101 are installed at the position where embossing is required. The sanitary product is placed flat on the upper surface of the support belt 102. The sanitary product will be pulled (on the production line) from the front and move on the support belt 102. The control adjustment cylinder 203 is used to control the extension rod of the adjustment cylinder 203 to drive the support beam 209 to move downward, that is, to move towards the support belt 102, so that the embossed part contacts the surface of the sanitary product. Prior to this, a diode was installed at the location where the corresponding electromagnet 402 was connected to the electromagnet 402. That is, one end of the input terminal of the electromagnet 402 was connected in series with the diode. Since many electromagnets 402 were used, the same principle as for LED dot matrix screen control could be adopted. A 74HC595 (an 8-bit serial input, parallel output displacement buffer) was embedded inside the embossed disk 401 (the embossed disk 401 was formed by casting during processing). When the electromagnet 402 was energized, it would repel the embossed protrusions 404 (considering energy saving). Because the embossed pattern area is small, activating only a few electromagnets 402 can reduce energy consumption. Therefore, the embossing protrusion 404 contains a permanent magnet, and a heat insulation layer (such as aerogel) is provided between the heating wire and the permanent magnet inside the embossing protrusion 404. Pushing the embossing protrusion 404 to the outside of the sliding well 4012, that is, protruding from the edge of the embossing disk 401, through multiple protruding embossing protrusions 404 (with the internal heating wire activated), any desired pattern can be embossed on the surface of the sanitary product (the density of the embossing protrusions 404 determines the clarity of the pattern).

[0026] When the drive motor 303 is started, its output shaft drives the spline shaft 304 to rotate. The spline shaft 304 drives the spline sleeve 305 to rotate. The spline sleeve 305 drives the input sliding block 306 to rotate. The rotation of the input sliding block 306 drives the intermediate sliding block 307 to rotate. The rotation of the intermediate sliding block 307 drives the output sliding block 308 to rotate. The rotation of the output sliding block 308 drives the input shaft of the dual output shaft gearbox 210 to rotate. At this time, the vibration generated by the rotation of the drive motor 303 will be buffered at the spline sleeve 305, the input sliding block 306, the intermediate sliding block 307, and the output sliding block 308. That is, radial displacement will occur between the intermediate sliding block 307, the output sliding block 308, and the input sliding block 306, and sliding will occur between the spline shaft 304 and the spline sleeve 305. To reduce the vibration energy transmitted to the dual output shaft gearbox 210, the output shaft of the dual output shaft gearbox 210 drives the drive shaft 211 to rotate. The drive shaft 211 drives the embossing rotating shaft 213 to rotate through the embossing frame 204. The rotation of the embossing rotating shaft 213 will drive the embossing part to rotate, thereby pressing the desired pattern onto the surface of the sanitary product.

[0027] The active friction wheel 212 will also come into contact with the passive friction wheel 104. Due to the rotation of the embossing rotating shaft 213, the active friction wheel 212 will also rotate. Therefore, the active friction wheel 212 will drive the passive friction wheel 104 to rotate. The rotation of the passive friction wheel 104 will drive the support pulley 105 to rotate through the single output shaft gearbox 103. The rotation of the support pulley 105 will drive the sanitary product to move horizontally. That is to say, the rotational linear speed of the embossing part is the same as the linear speed of the support belt 102, which prevents dragging of the sanitary product.

Claims

1. An embossing mechanism for a flexible production line for manufacturing hygiene products, characterized in that: The drive unit includes a mounting bracket (201), on which a guide slide rod (202) is slidably mounted. An embossing frame (204) is fixedly mounted on the guide slide rod (202). An embossing rotating shaft (213) is rotatably mounted on the embossing frame (204). A dual-output shaft gearbox (210) is fixedly mounted on the embossing frame (204). A drive shaft (211) is fixedly mounted on each of the two output shafts of the dual-output shaft gearbox (210). The two drive shafts (211) are connected to the two ends of the embossing rotating shaft (213) via two drive belts (205). The embossing rotating shaft (213) is connected along the upper edge of... A number of stacked embossed parts are fixedly installed axially. Each embossed part includes an embossed disk (401). The embossed disk (401) has a number of sliding wells (4012). The embossed disk (401) also has the same number of vent holes (4011) as the sliding wells (4012). The vent holes (4011) are used to connect the sliding wells (4012) to the outside. Each sliding well (4012) is fixedly installed with an electromagnet (402). A tension spring (403) is fixedly installed on the electromagnet (402). An embossed protrusion (404) that slides and engages with the inner wall of the sliding well (4012) is fixedly installed on the tension spring (403). It also includes a support pulley bracket (101), on which two symmetrically arranged support pulleys (105) are rotatably mounted. The two support pulleys (105) are connected by a support belt (102). A support plate (106) for supporting the support belt (102) is fixedly mounted on the support pulley bracket (101). Two single-output shaft gearboxes (103) are fixedly mounted on the support pulley bracket (101). The two single-output shaft gearboxes (103) are symmetrically arranged about the center point of the support belt (102). The output shafts of the single-output shaft gearboxes (103) are fixedly connected to the corresponding support pulleys (105). A passive friction wheel (104) is fixedly mounted on the input shaft of each of the two single-output shaft gearboxes (103). An active friction wheel (212) is fixedly mounted on both ends of the embossing rotating shaft (213). The active friction wheel (212) and the passive friction wheel (104) are in frictional rolling cooperation.

2. The embossing mechanism of a flexible production line for producing hygiene products according to claim 1, characterized in that: An adjusting electric cylinder (203) is also fixedly installed on the mounting frame (201). A support beam (209) is fixedly installed at the end of the telescopic rod of the adjusting electric cylinder (203). Compensating slide rods (206) are slidably installed at both ends of the support beam (209). Both compensating slide rods (206) are fixedly installed on the embossing frame (204).

3. The embossing mechanism of a flexible production line for producing hygiene products according to claim 2, characterized in that: Both of the aforementioned compensating slide rods (206) are surrounded by compensating springs (208), which are located between the support beam (209) and the embossing frame (204). Compensating limiting plates (207) are fixedly installed at the top of both compensating slide rods (206).

4. The embossing mechanism of a flexible production line for producing hygiene products according to claim 3, characterized in that: A drive assembly is also fixedly installed on the support beam (209). The drive assembly includes a drive motor bracket (301). A drive motor (303) is mounted on the drive motor bracket (301) via four elastic components (302). A spline shaft (304) is fixedly installed on the output shaft of the drive motor (303).

5. The embossing mechanism of a flexible production line for producing hygiene products according to claim 4, characterized in that: The dual output shaft gearbox (210) has an output sliding block (308) fixedly installed on its input shaft. A spline sleeve (305) is slidably installed on the spline shaft (304) via a spline. An input sliding block (306) is fixedly installed on the spline sleeve (305). The input sliding block (306) and the output sliding block (308) are slidably connected by an intermediate sliding block (307).

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