Continuous ultrasonic welding mechanism for substrate and lining

Abstract

The invention relates to a continuous ultrasonic welding mechanism for a substrate and a lining. The distance adjusting transfer mechanism comprises a rotating shaft, a negative pressure box and a cam disc are installed at the two ends of the rotating shaft respectively, the cam disc comprises an inner disc body fixed relative to the rotating shaft and a plurality of outer disc bodies which sleeve the inner disc body and are arranged in parallel in the axial direction of the inner disc body, and the inner disc body and the outer disc bodies are in meshing transmission through elastic teeth. Distance adjusting transfer seats are vertically connected to the outer disc body, second negative pressure adsorption holes are formed in the outer surfaces of the distance adjusting transfer seats, the distance adjusting transfer seats communicate with the negative pressure box through negative pressure hoses, and permanent magnet parts are arranged on the outer surfaces of the distance adjusting transfer seats; the welding platform comprises a welding hole, an ultrasonic welding head is correspondingly arranged below the welding hole, and an electromagnet is further arranged at the welding hole; welding is directly conducted in the transferring process of the distance-adjusting transferring base without the gluing process, the distance-adjusting transferring base serves as a welding base, and therefore the machining procedures are greatly simplified, the production efficiency is remarkably improved, and the production cost is reduced.

Description

Technical Field

[0001] This invention relates to a continuous ultrasonic welding mechanism for a substrate and an inner lining. Background Technology

[0002] In the production and processing of disposable underwear products such as baby training pants, menstrual pants, and adult pants, mass production is generally carried out on production lines. Knitted or non-woven fabrics are mainly used as the base to form the body of the underwear, and elastic non-woven fabric is used as the lining and fitted to the crotch area of ​​the underwear.

[0003] The current method for bonding and fixing the base and lining is as follows: First, apply adhesive to the base, then use an O-cutting roller to cut out the elastic fabric lining, and transfer the cut elastic fabric lining to the underwear base coated with adhesive through an adjustable transfer roller. The adhesive provides initial fixation to the base and the lining transferred thereon. Subsequently, the lining and base are ultrasonically welded together to achieve bonding and fixing between the base and the lining.

[0004] This method has the following main problems: 1. Before ultrasonic welding of the substrate and liner, adhesive needs to be applied between the substrate and liner to initially fix them together, which increases production costs. 2. The adhesive between the base and the lining will harden after it solidifies, affecting the user experience and reducing the breathability of the underwear; 3. The process of applying adhesive, bonding, and welding is required to fix the lining and the base in sequence, which is quite complicated. Summary of the Invention

[0005] The purpose of this invention is to provide a continuous ultrasonic welding mechanism for a substrate and an inner lining, which eliminates the need for an adhesive process and allows welding to be performed directly during the transfer process using an adjustable transfer base. Furthermore, by keeping the adjustable transfer base stationed at the welding position as a welding base, the processing steps are greatly simplified, production efficiency is significantly improved, and production costs are reduced.

[0006] The technical solution of the present invention is as follows: The continuous ultrasonic welding mechanism for the substrate and the liner includes: The O-cutting mechanism includes a light roller and an O-cutting roller. An O-cutting gap is formed between the light roller and the O-cutting roller for the inner lining fabric tape to pass through. The outer peripheral surface of the O-cutting roller is provided with a first negative pressure adsorption hole for adsorbing the O-cut inner lining. The adjustable transfer mechanism includes a rotating shaft, with a negative pressure box and a cam disk installed at both ends of the rotating shaft. The cam disk includes an inner disk body fixed relative to the rotating shaft and multiple outer disk bodies sleeved on the inner disk body and arranged in parallel along the axial direction of the inner disk body. The inner disk body and the outer disk bodies are driven by elastic tooth meshing. An adjustable transfer seat is vertically connected to the outer disk body. The outer surface of the adjustable transfer seat is provided with a second negative pressure adsorption hole. Each adjustable transfer seat is connected to the negative pressure box through a negative pressure hose. The outer surface of the adjustable transfer seat has a permanent magnet part. The welding platform includes a welding hole, an ultrasonic welding head is installed below the welding hole, and an electromagnet is also installed at the welding hole. During operation, when the first adjustable transfer seat rotates to contact the O-cut roller, the first negative pressure adsorption hole is depressurized. The second negative pressure adsorption hole of the first adjustable transfer seat adsorbs the cut inner liner and carries it to the welding hole. The electromagnet is activated to adsorb the permanent magnet part of the first adjustable transfer seat, so that the elastic teeth of the corresponding outer and inner discs of the first adjustable transfer seat slide relative to each other. The first adjustable transfer seat stops at the welding hole. The ultrasonic welding head welds the inner liner on the adjustable transfer seat to the base cloth tape passing through the surface of the welding platform. During this process, the remaining adjustable transfer seats continue to rotate with the shaft.

[0007] Based on the above scheme, further improvements are made as follows: two electromagnets are symmetrically arranged on both sides of the ultrasonic welding head. This ensures that the adjustable transfer seat can be positioned in the middle of the welding hole when adsorbing the transfer seat.

[0008] Based on the above solution, the following further improvement is made: the cross-section of the crest of the flexible tooth is semi-circular. This ensures smoother passage when the teeth glide relative to each other.

[0009] Based on the above solution, further improvements are made as follows: the negative pressure box includes a box body and a box cover that rotates and seals with the box body. The box body is fixed relative to a fixed frame, and the box cover is fixed on a rotating shaft. The negative pressure hose is connected to the box cover. This structure eliminates the need for a rotary joint, forming a rotary seal fit structure and enabling smooth negative pressure application.

[0010] Based on the above scheme, further improvements are made as follows: the welding platform is made of a non-ferromagnetic material to minimize interference with the engagement of the electromagnet and the adjustable transfer seat.

[0011] Based on the above solution, the following further improvements are made: the outer surface of the adjustable transfer seat is curved to ensure smoother rotation.

[0012] Based on the above scheme, the following improvements are made: the adjustable transfer seat has a cavity, and the negative pressure hose and the second negative pressure adsorption hole are both connected to the cavity.

[0013] Based on the above scheme, the following improvements are made: the welding platform is located below the distance adjustment and transfer mechanism.

[0014] The beneficial effects of this technical solution are as follows: During use, the continuous ultrasonic welding mechanism for the substrate and lining, after the lining tape is unwound, passes through the O-cutting gap between the optical roller and the O-cutting blade roller of the O-cutting mechanism, cutting out individual lining sheets. Because the O-cutting blade roller has a first negative pressure suction hole, the cut lining sheet can rotate with the O-cutting blade roller while maintaining its position relative to the O-cutting blade roller. When it rotates to the position corresponding to the distance adjustment and transfer mechanism, the synchronously rotating distance adjustment and transfer seat aligns perfectly with the lining sheet. By controlling the first negative pressure suction hole of the O-cutting blade roller corresponding to the lining sheet area, the negative pressure is stopped. Furthermore, due to the second negative pressure suction hole of the distance adjustment and transfer seat, the lining sheet is moved from the O-cutting blade roller... The cutting roller is transferred to the adjustable transfer seat, and then the inner liner is transferred to the welding hole along with the adjustable transfer seat. The base fabric, which serves as the base, is laid flat on the welding platform and moves at a constant speed. At this time, the inner liner is in contact with the base fabric, and the inner liner and the base fabric are located between the welding head and the adjustable transfer seat. The adjustable transfer seat is briefly attracted by the electromagnet, thereby completing the rapid ultrasonic welding and fixing the inner liner on the base fabric. During this process, the other adjustable transfer seats continue to rotate at a constant speed with the shaft and receive other inner liners, thus ensuring that the inner liners can be continuously welded on the base fabric. The base fabric is then cut to obtain the semi-finished product. Therefore, compared with the existing technology, this technical solution does not require adhesive bonding, nor does it require secondary transfer and ultrasonic welding of the bonded substrate and lining. Instead, it directly eliminates the need for adhesive bonding and related processes, and performs ultrasonic welding directly after O-cutting. Moreover, it directly uses the adjustable transfer seat of the transfer lining sheet as the welding base to support the welding, completing the online welding. It has the advantages of high processing efficiency, saving materials and energy, and low cost, and has significant advantages in mass continuous production lines. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a specific embodiment of the continuous ultrasonic welding mechanism for the substrate and liner of the present invention. Figure 2 for Figure 1 Another perspective stereoscopic view; Figure 3 for Figure 1 A schematic diagram illustrating the working principle; Figure 4 for Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is a schematic diagram of the structure at the junction of the inner and outer discs. In the diagram: 1-Frame, 2-Optical roller, 3-Cut roller, 4-Rotating shaft, 5-Negative pressure box, 51-Box body, 52-Box cover, 6-Cam plate, 61-Inner plate, 62-Outer plate, 63-Elastic teeth, 64-Adjustable transfer seat, 65-Second negative pressure adsorption hole, 66-Permanent magnet, 7-Negative pressure hose, 8-Welding platform, 81-Welding hole, 82-Ultrasonic welding head, 83-Electromagnet, 9-Base fabric tape, 10-Inner lining fabric tape, 11-Drive device, 12-Edge material recycling mechanism. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0018] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0019] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0020] Specific embodiments of the continuous ultrasonic welding mechanism for the substrate and liner of the present invention are as follows: Figure 1-5 As shown, the continuous ultrasonic welding mechanism for the substrate and lining includes a frame 1, an O-cutting mechanism, a distance adjustment and transfer mechanism, and a welding platform 8.

[0021] The O-cutting mechanism includes a light roller 2 and an O-cutting roller 3. The light roller 2 and the O-cutting roller 3 form an O-cutting gap for the inner lining fabric belt 10 to pass through. The outer peripheral surface of the O-cutting roller 3 is provided with a first negative pressure adsorption hole for adsorbing the O-cut inner lining. The adjustable transfer mechanism includes a rotating shaft 4, with a negative pressure box 5 and a cam disk 6 mounted at both ends of the shaft 4. The cam disk 6 includes an inner disk 61 fixed relative to the rotating shaft 4 and multiple outer disks 62 arranged parallel to each other along the axial direction of the inner disk 61. The inner disk 61 and the outer disks 62 are driven by meshing elastic teeth 63. An adjustable transfer seat 64 is vertically connected to the outer disk 62. The outer surface of the adjustable transfer seat 64 is provided with a second negative pressure adsorption hole 65. Each adjustable transfer seat 64 is connected to the negative pressure box 5 through a negative pressure hose 7. The outer surface of the adjustable transfer seat 64 has a permanent magnet part 66. The cross-section of the tooth crest of the elastic teeth 63 is semi-circular, ensuring smoother sliding when they slide relative to each other. The negative pressure box 5 includes a box body 51 and a box cover 52 that rotates and seals with the box body 51. The box body 51 is fixed relative to the fixed frame 1, and the box cover 52 is fixed on the rotating shaft 4. The negative pressure hose 7 is connected to the box cover 52. The negative pressure box 5 adopts this structure, which eliminates the need for a rotary joint, forming a rotary sealing fit structure to achieve smooth negative pressure. The outer surface of the adjustable transfer seat 64 is arc-shaped to ensure smoother rotation. The adjustable transfer seat 64 has a cavity, and both the negative pressure hose 7 and the second negative pressure adsorption hole 65 are connected to the cavity.

[0022] The welding platform 8 includes a welding hole 81, with an ultrasonic welding head 82 positioned below it. An electromagnet 83 is also located at the welding hole 81; two electromagnets 83 are symmetrically arranged on either side of the ultrasonic welding head 82. This ensures that the distance adjustment transfer seat 64 can be positioned at the center of the welding hole 81 when it is attracted. The welding platform 8 is made of a non-ferromagnetic material to minimize interference with the attraction between the electromagnet 83 and the distance adjustment transfer seat 64. The welding platform 8 is located below the distance adjustment transfer mechanism.

[0023] During operation, when the first adjustable transfer seat 64 rotates to contact the O-cut roller 3, the first negative pressure adsorption hole is depressurized. The second negative pressure adsorption hole 65 of the first adjustable transfer seat 64 adsorbs the cut inner liner and carries it to the welding hole 81. The electromagnet 83 is activated to adsorb the permanent magnet part 66 of the first adjustable transfer seat 64, so that the outer disk 62 corresponding to the first adjustable transfer seat 64 and the elastic teeth 63 of the inner disk 61 slide relative to each other. The first adjustable transfer seat 64 stops at the welding hole 81. The ultrasonic welding head 82 welds the inner liner on the adjustable transfer seat 64 onto the base cloth tape 9 passing through the surface of the welding platform 8. During this process, the remaining adjustable transfer seats 64 continue to rotate with the rotating shaft 4.

[0024] When the continuous ultrasonic welding mechanism for the base and lining is in use, the lining fabric tape 10, after being unwound, passes through the O-cutting gap between the optical roller 2 and the O-cutting blade roller 3 of the O-cutting mechanism, cutting out individual lining sheets. Because the O-cutting blade roller 3 has a first negative pressure suction hole, the lining sheet being cut can rotate with the O-cutting blade roller 3 while maintaining its position relative to the O-cutting blade roller 3. When it rotates to the position corresponding to the distance adjustment transfer mechanism, the synchronously rotating distance adjustment transfer seat 64 is precisely aligned with the lining sheet. By controlling the first negative pressure suction hole of the O-cutting blade roller 3 corresponding to the lining sheet area to stop drawing negative pressure, and because of the second negative pressure suction hole 65 of the distance adjustment transfer seat 64, the lining sheet is transferred from the O-cutting blade roller 3 to the distance adjustment transfer seat 64. The inner liner is then transferred to the welding hole 81 by the adjustable transfer seat 64. The base fabric 9, which serves as the base, is laid flat on the welding platform 8 and moves at a constant speed. At this time, the inner liner is in contact with the base fabric 9, and the inner liner and the base fabric 9 are located between the welding head and the adjustable transfer seat 64. The adjustable transfer seat 64 is briefly attracted by the electromagnet 83, thereby completing the rapid ultrasonic welding and fixing the inner liner on the base fabric 9. During this process, the other adjustable transfer seats 64 continue to rotate at a constant speed with the rotating shaft 4 and receive other inner liners, thereby ensuring that the inner liner can be continuously welded on the base fabric 9. The base fabric 9 can then be cut to obtain the semi-finished product. Therefore, compared with the existing technology, this technical solution does not require adhesive bonding, nor does it require secondary transfer and ultrasonic welding of the bonded substrate and liner. Instead, it directly eliminates the need for adhesive bonding and related processes, and performs ultrasonic welding directly after O-cutting. Moreover, it directly uses the adjustable transfer seat 64 of the transfer liner as the welding base to support the welding, and completes the online welding. It has the advantages of high processing efficiency, saving materials and energy, and low cost, and has significant advantages in mass continuous production lines.

[0025] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A continuous ultrasonic welding mechanism for the substrate and lining, comprising: The O-cutting mechanism includes a light roller and an O-cutting roller. An O-cutting gap is formed between the light roller and the O-cutting roller for the inner lining fabric tape to pass through. The outer peripheral surface of the O-cutting roller is provided with a first negative pressure adsorption hole for adsorbing the O-cut inner lining. Its characteristic is that it further includes: The adjustable transfer mechanism includes a rotating shaft, with a negative pressure box and a cam disk installed at both ends of the rotating shaft. The cam disk includes an inner disk body fixed relative to the rotating shaft and multiple outer disk bodies sleeved on the inner disk body and arranged in parallel along the axial direction of the inner disk body. The inner disk body and the outer disk bodies are driven by elastic tooth meshing. An adjustable transfer seat is vertically connected to the outer disk body. The outer surface of the adjustable transfer seat is provided with a second negative pressure adsorption hole. Each adjustable transfer seat is connected to the negative pressure box through a negative pressure hose. The outer surface of the adjustable transfer seat has a permanent magnet part. The welding platform includes a welding hole, an ultrasonic welding head is installed below the welding hole, and an electromagnet is also installed at the welding hole. During operation, when the first adjustable transfer seat rotates to contact the O-cut roller, the first negative pressure adsorption hole is depressurized. The second negative pressure adsorption hole of the first adjustable transfer seat adsorbs the cut inner liner and carries it to the welding hole. The electromagnet is activated to adsorb the permanent magnet part of the first adjustable transfer seat, so that the elastic teeth of the corresponding outer and inner discs of the first adjustable transfer seat slide relative to each other. The first adjustable transfer seat stops at the welding hole. The ultrasonic welding head welds the inner liner on the adjustable transfer seat to the base cloth tape passing through the surface of the welding platform. During this process, the remaining adjustable transfer seats continue to rotate with the shaft.

2. The continuous ultrasonic welding mechanism for the substrate and liner according to claim 1, characterized in that, Two electromagnets are arranged symmetrically on both sides of the ultrasonic welding head.

3. The continuous ultrasonic welding mechanism for the substrate and liner according to claim 1, characterized in that, The cross-section of the crown of a flexible tooth is semi-circular.

4. The continuous ultrasonic welding mechanism for the substrate and liner according to claim 1, characterized in that, The negative pressure box includes a box body and a box cover that rotates and seals with the box body. The box body is fixed relative to a fixed frame, the box cover is fixed on a rotating shaft, and the negative pressure hose is connected to the box cover.

5. The continuous ultrasonic welding mechanism for the substrate and liner according to claim 1, characterized in that, The welding platform is made of non-ferromagnetic material.

6. The continuous ultrasonic welding mechanism for the substrate and liner according to claim 1, characterized in that, The outer surface of the adjustable transfer seat is arc-shaped.

7. The continuous ultrasonic welding mechanism for the substrate and liner according to claim 1, characterized in that, The adjustable transfer seat has a cavity, and the negative pressure hose and the second negative pressure adsorption hole are both connected to the cavity.

8. The continuous ultrasonic welding mechanism for the substrate and liner according to claim 1, characterized in that, The welding platform is located below the distance adjustment and transfer mechanism.

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