Elastic waistband attaching machine

Abstract

The utility model relates to the technical field of the machine of pasting, and disclose a kind of elastic waistline bonding machine, including workbench, support frame, electric telescopic link, automatic hot-pressing mechanism and positioning conveying device.The support frame is U-shaped gantry structure, fixed on the top of workbench;Automatic hot-pressing mechanism includes lower pressing disc, apron and high-temperature gas supply system, and intelligent pressure control is realized by pressure detection plate;Positioning conveying device adopts plate conveyor, and placing groove is provided on chain plate to realize accurate positioning.Working, chain plate automatically conveys elastic waistline to processing position, apron first contact with chain plate to form closed space, after high-temperature gas evenly sprays softening glue layer, lower pressing disc is accurately pressed together.The utility model realizes full-automatic continuous production, with positioning accurate, hot-pressing uniform and pressure controllable and the like advantages, production efficiency is improved by more than 50%, waste rate is less than 1%, and it is suitable for high-quality production of different specifications elastic waistline.

Description

Technical Field

[0001] This utility model relates to the field of laminating machine technology, specifically an elastic waistband laminating machine. Background Technology

[0002] As a core component of disposable hygiene products such as diapers and sanitary products, the elastic waistband's fit quality directly affects the product's comfort and leak-proof performance. In traditional production processes, the pressing and bonding of elastic waistbands mainly relies on manual feeding combined with semi-automatic hot-pressing equipment, which suffers from low efficiency, poor positioning accuracy, and unstable hot-pressing parameters, making it difficult to meet the demands of modern high-speed production.

[0003] Existing equipment typically involves manually placing each piece of elastic waistband material onto a flatbed carrier. A cylinder then pushes the carrier intermittently into the hot pressing station. The conveyor belt requires manual positioning of the waistband material, and the carrier must be manually reset after each pressing, resulting in a processing cycle of 10-15 seconds per piece. This manual operation is not only inefficient but also prone to misalignment during hot pressing due to human error, leading to a scrap rate as high as 5%-8%.

[0004] Therefore, we propose an elastic waistband bonding machine to solve the problems mentioned above. Utility Model Content

[0005] This utility model provides an elastic waistband bonding machine, which can solve the problem that existing equipment mostly uses manual labor to place elastic waistband materials piece by piece onto a flat carrier. This manual operation is not only inefficient, but also prone to misalignment during hot pressing due to deviations in the placement position.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] An elastic waistband bonding machine includes a worktable, a support frame fixedly connected to the upper part of the worktable, an electric telescopic rod fixedly connected to the support frame, an automatic hot pressing mechanism installed at the lower end of the electric telescopic rod, a positioning conveying device below the automatic hot pressing mechanism, the positioning conveying device including a plate conveyor located below the support frame, the plate conveyor including a drive system and chain plates for conveying, the drive system driving multiple chain plates to rotate cyclically, guard plates are provided on both sides of the chain plates, the inner side of the worktable is fixedly connected to the guard plates, and the surface of the chain plates has a placement groove for accommodating elastic waistbands, the automatic hot pressing mechanism cooperates with the chain plates containing the elastic waistbands to perform hot pressing bonding of the elastic waistbands.

[0008] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0009] This utility model of an elastic waistband bonding machine achieves efficient, precise, and stable hot-pressing bonding of elastic waistbands through an innovative automated structure and intelligent control system. The equipment uses a plate conveyor with placement troughs on the chain plate for automatic material positioning and conveying. A U-shaped gantry support frame ensures the rigidity and stability of the pressing mechanism. Combined with the hot air jet and pressure coordinated control of the automatic hot-pressing mechanism, production efficiency and product quality are significantly improved. Specifically, firstly, the automated conveying system replaces manual feeding, reducing the processing time per piece to 5-8 seconds, increasing efficiency by more than 50%; secondly, the enclosed heating space of the enclosure, combined with evenly distributed hot air holes, ensures uniform heating of the adhesive layer, with temperature fluctuations controlled within ±5℃; thirdly, a matrix-type pressure detection plate monitors pressure distribution in real time and automatically adjusts the posture of the lower pressure plate to ensure the bonding quality of complex curved waistbands; finally, a light sensor and closed-loop control system achieve full-process automation, reducing the scrap rate to below 1%. This equipment not only solves the problems of low efficiency, poor precision, and unstable hot pressing in traditional processes, but also has advantages such as energy saving, environmental protection, and strong adaptability, and can meet the high-quality production needs of elastic waistbands of different specifications. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall front structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the connection structure between the enclosure and the lower pressure plate of this utility model;

[0012] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the lower pressure plate of this utility model;

[0013] Figure 4 For the present utility model Figure 3 A partially enlarged structural diagram.

[0014] The components include: 1. Workbench; 2. Support frame; 21. Electric telescopic rod; 22. Lower pressure plate; 23. Enclosure; 24. Adjustment groove; 25. Guide rod; 26. Telescopic spring; 27. Guide sleeve; 28. Flow chamber; 29. ​​Hot air hole; 3. Plate conveyor; 31. Guard plate; 32. Chain plate; 33. Placement groove; 34. Drive device; 41. Conveying hose; 42. Electromagnetic switch valve; 43. High temperature booster pump; 44. Pressure detection plate. Detailed Implementation

[0015] The specific embodiments of this utility model are described in detail below, but it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0016] Example 1:

[0017] Please see Figure 1-4 This utility model provides a technical solution:

[0018] An elastic waistband bonding machine includes a worktable 1, a support frame 2 fixedly connected to the upper part of the worktable 1, an electric telescopic rod 21 fixedly connected to the support frame 2, an automatic hot pressing mechanism installed at the lower end of the electric telescopic rod 21, a positioning conveying device below the automatic hot pressing mechanism, the positioning conveying device including a plate conveyor 3, the plate conveyor 3 being located below the support frame 2, the plate conveyor 3 including a drive system and chain plates 32 for conveying, the drive system driving multiple chain plates 32 to rotate cyclically, guard plates 31 are provided on both sides of the chain plates 32, the inner side of the worktable 1 is fixedly connected to the guard plates 31, the surface of the chain plates 32 is provided with a placement groove 33 for accommodating elastic waistbands, and the automatic hot pressing mechanism cooperates with the chain plates 32 containing elastic waistbands to perform hot pressing bonding of the elastic waistbands.

[0019] The elastic waistband bonding machine uses a plate conveyor 3 to achieve continuous and automated conveying of elastic waistband material. The chain plate 32 is driven by a drive device 34 to rotate cyclically. The drive device 34 includes a sprocket, a chain, and a motor. This drive device 34 is existing technology. The placement groove 33 on the surface of the chain plate 32 is used to accurately position the elastic waistband. When the chain plate 32 delivers the elastic waistband material to the support frame 2, the electric telescopic rod 21 drives the automatic hot pressing mechanism to press down, contacting the waistband in the placement groove 33 to complete the hot pressing bonding. The entire process requires no manual intervention, solving the problem of low efficiency of manual feeding and realizing continuous processing. A light sensor can also be installed on the support frame 2 to identify the position of the elastic waistband material, assist in position correction, and ensure stable cooperation between the automatic hot pressing mechanism and the placement groove 33.

[0020] The support frame 2 is a U-shaped structure with its opening facing downwards. Both ends of the support frame 2 are fixedly connected to the upper part of the worktable 1. The U-shaped support frame 2 spans across the worktable 1 with its opening facing downwards, forming a stable gantry structure. Its two ends are rigidly connected to the worktable 1, providing a stable installation base for the electric telescopic rod 21, ensuring that it will not shift during the pressing process and improving the accuracy of the pressing position.

[0021] The automatic hot pressing mechanism includes a lower pressure plate 22, which is fixedly installed at the lower end of the electric telescopic rod 21. A surrounding plate 23 is slidably connected to the outside of the lower pressure plate 22. Adjustment grooves 24 are opened on the inner sides of both ends of the surrounding plate 23. A guide rod 25 is fixedly connected inside the adjustment groove 24. A telescopic spring 26 is installed inside the adjustment groove 24. The lower pressure plate 22 is U-shaped, and guide sleeves 27 are fixedly connected to the outer sides of both ends. A sleeve hole is opened on the guide sleeve 27. The sleeve hole of the guide sleeve 27 is slidably sleeved on the outside of the guide rod 25. The guide sleeve 27 is slidably connected inside the adjustment groove 24.

[0022] The lower pressure plate 22 has a flow guide chamber 28 inside the end near the electric telescopic rod 21, and a uniformly distributed hot air hole 29 is opened at the end of the lower pressure plate 22 away from the electric telescopic rod 21. The hot air hole 29 is connected to the interior of the flow guide chamber 28, and a high temperature gas supply system is connected to the lower pressure plate 22.

[0023] The high-temperature gas supply system includes a delivery hose 41, one end of which is connected to the inside of the flow guide chamber 28 of the lower pressure plate 22, and an electromagnetic switch valve 42 is installed between the delivery hose 41 and the lower pressure plate 22. A high-temperature booster pump 43 is fixedly connected to the end of the delivery hose 41 away from the lower pressure plate 22, and the high-temperature booster pump 43 is fixedly installed on the support frame 2.

[0024] A pressure detection plate 44 is embedded in the bottom of the enclosure 23, and the pressure detection plate 44 is electrically connected to the solenoid valve 42.

[0025] The automatic hot pressing mechanism is characterized by the sliding fit between the lower pressure plate 22 and the surrounding plate 23. When the electric telescopic rod 21 pushes the lower pressure plate 22 down, the surrounding plate 23 first contacts the surface of the chain plate 32 and covers the outside of the placement groove 33, forming a closed heating space. The pressure between the surrounding plate 23 and the chain plate 32 is detected by the pressure detection plate 44 at the bottom of the surrounding plate 23. The pressure is used to determine whether the surrounding plate 23 and the chain plate 32 are in contact. When the detected pressure value exceeds the set threshold, the electromagnetic switch valve 42 is triggered to open. The high-temperature booster pump 43 introduces high-temperature gas into the lower pressure plate 22 through the delivery hose 41 and enters the lower pressure plate. Inside the flow chamber 28 of the disc 22, the high-temperature gas inside the flow chamber 28 is evenly sprayed through the hot air hole 29 into the heating space between the surrounding plate 23 and the chain plate 32, forming a thermal field covering the entire elastic waistband material. The high-temperature gas quickly softens the waistband adhesive layer. At the same time, the pressure disc 22 presses down further and enters the placement groove 33. The pressure disc 22 and the chain plate 32 achieve the pressing of the elastic waistband material. The elastic waistband material is quickly completed in the bonding process under the synergistic effect of pressure and heat, which improves the bonding strength.

[0026] The bottom of the pressure plate 22 is fitted with a pressure detection plate 44, which is electrically connected to the solenoid valve 42. When the detected pressure value exceeds the set threshold, the solenoid valve 42 is triggered to close, and the electric telescopic rod 21 stops applying pressure or retracts, so as to prevent the pressure of the pressure plate 22 from being too high and causing damage to the elastic waistband fabric.

[0027] The pressure detection plate 44 contains a matrix of pressure-sensitive sensors with a spacing of 10mm×10mm. Through multi-point pressure feedback, it can accurately identify the force distribution in the pressing area and automatically correct the tilt or offset of the lower pressure plate 22 to ensure the consistency of the bonding quality of the complex curved waist.

[0028] Through the above scheme, the plate conveyor 3 positions the elastic waistband material by placing it in the placement groove 33 of its chain plate 32. Then, through the intermittent rotation of the plate conveyor 3, the plate conveyor 3 and the automatic hot pressing mechanism are precisely coordinated to achieve fully automatic continuous production, improving efficiency by more than 50%.

[0029] The working principle of this elastic waistband bonding machine is as follows:

[0030] After the equipment is started, the drive unit 34 of the plate conveyor 3 drives the chain plate 32 to rotate cyclically. The placement groove 33 on the surface of the chain plate 32 accurately carries the elastic waistband material during the conveying process. When the chain plate 32 delivers the elastic waistband material to the processing station below the support frame 2, the electric telescopic rod 21 is activated, pushing the automatic hot pressing mechanism to press down as a whole. At this time, the outer side plate 23 of the lower pressure plate 22 first contacts the surface of the chain plate 32, and the pressure detection plate 44 at the bottom of the side plate 23 monitors the contact pressure in real time. When the pressure reaches the set threshold, it indicates that the side plate 23 has formed a closed heating space with the chain plate 32. At this time, the electromagnetic switch valve 42 is automatically opened, and the high-temperature booster pump 43 injects high-temperature gas into the guide chamber 28 inside the lower pressure plate 22 through the delivery hose 41. The high-temperature gas is evenly sprayed into the closed space through the hot air hole 29, quickly softening the adhesive layer of the elastic waistband.

[0031] While the hot air is applied, the electric telescopic rod 21 continues to push the lower pressure plate 22 downwards. The guide sleeve 27 slides along the guide rod 25 within the adjusting groove 24, and the telescopic spring 26 provides cushioning and maintains stable pressure. The lower pressure plate 22 finally enters the placement groove 33, where it, together with the chain plate 32, applies mechanical pressure to the elastic waistband, allowing the softened adhesive layer to achieve uniform bonding under the combined action of heat and pressure. When the pressure detection plate 44 embedded at the bottom of the lower pressure plate 22 detects that the pressing force exceeds the safety threshold, it immediately triggers the electromagnetic switch valve 42 to close and controls the electric telescopic rod 21 to retract, preventing material damage due to overpressure.

[0032] After pressing is completed, the plate conveyor 3 continues to operate, sending out the finished waistbands, while new materials to be processed enter the workstation, forming continuous production. A matrix-type pressure sensor provides real-time feedback on pressure distribution through densely packed 10mm×10mm detection points, automatically correcting the tilt or offset of the lower pressure plate 22 to ensure consistent bonding quality for complex curved waistbands. Throughout the process, a light sensor dynamically calibrates the position of the chain plate 32, achieving a complete closed-loop control of automated feeding, precise positioning, intelligent pressure control, and efficient hot pressing, significantly improving production efficiency and product qualification rate.

[0033] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. An elastic waistband bonding machine, comprising a worktable (1), wherein a support frame (2) is fixedly connected to the upper part of the worktable (1), and an electric telescopic rod (21) is fixedly connected to the support frame (2), characterized in that: An automatic hot pressing mechanism is installed at the lower end of the electric telescopic rod (21). A positioning conveying device is set below the automatic hot pressing mechanism. The positioning conveying device includes a plate conveyor (3). The plate conveyor (3) is located below the support frame (2). The plate conveyor (3) includes a drive system and a chain plate (32) for conveying. The drive system drives multiple chain plates (32) to rotate in a cycle. Guard plates (31) are set on both sides of the chain plate (32). The inner side of the workbench (1) is fixedly connected to the guard plate (31). The surface of the chain plate (32) is provided with a placement groove (33) for accommodating the elastic waistband. The automatic hot pressing mechanism cooperates with the chain plate (32) equipped with the elastic waistband to perform hot pressing and bonding of the elastic waistband.

2. The elastic waistband bonding machine according to claim 1, characterized in that: The support frame (2) is a U-shaped structure with the opening facing downwards. Both ends of the support frame (2) are fixedly connected to the upper part of the workbench (1).

3. The elastic waistband bonding machine according to claim 1, characterized in that: The automatic hot pressing mechanism includes a lower pressure plate (22), which is fixedly installed at the lower end of the electric telescopic rod (21). A surrounding plate (23) is slidably connected to the outside of the lower pressure plate (22), and adjustment grooves (24) are provided on the inner sides of both ends of the surrounding plate (23).

4. The elastic waistband bonding machine according to claim 1, characterized in that: The adjustment groove (24) is fixedly connected to a guide rod (25), and a telescopic spring (26) is installed inside the adjustment groove (24). The lower pressure plate (22) is U-shaped, and guide sleeves (27) are fixedly connected to the outer sides of both ends. A sleeve hole is opened on the guide sleeve (27), and the sleeve hole of the guide sleeve (27) is slidably sleeved on the outside of the guide rod (25). The guide sleeve (27) is slidably connected to the inside of the adjustment groove (24).

5. The elastic waistband bonding machine according to claim 4, characterized in that: The lower pressure plate (22) has a flow guide chamber (28) inside the end near the electric telescopic rod (21), and a uniformly distributed hot air hole (29) is opened at the end of the lower pressure plate (22) away from the electric telescopic rod (21). The hot air hole (29) is connected to the interior of the flow guide chamber (28), and a high temperature gas supply system is connected to the lower pressure plate (22).

6. The elastic waistband bonding machine according to claim 5, characterized in that: The high-temperature gas supply system includes a delivery hose (41), one end of which is connected to the inside of the flow guide chamber (28) of the pressure plate (22), and an electromagnetic switch valve (42) is installed between the delivery hose (41) and the pressure plate (22).

7. The elastic waistband bonding machine according to claim 6, characterized in that: The end of the delivery hose (41) away from the lower pressure plate (22) is fixedly connected to a high-temperature booster pump (43), which is fixedly installed on the support frame (2).

8. The elastic waistband bonding machine according to claim 3, characterized in that: The bottom of the enclosure (23) is fitted with a pressure detection plate (44), which is electrically connected to the electromagnetic switch valve (42). When the detected pressure value exceeds the set threshold, the electromagnetic switch valve (42) is triggered to open.

9. The elastic waistband bonding machine according to claim 3, characterized in that: The pressure plate (22) is fitted with a pressure detection plate (44) at the bottom. The pressure detection plate (44) is electrically connected to the electromagnetic switch valve (42). When the detected pressure value exceeds the set threshold, the electromagnetic switch valve (42) is triggered to close.

10. The elastic waistband bonding machine according to claim 9, characterized in that: The pressure detection plate (44) contains a matrix of pressure-sensitive sensors with a sensor spacing of 10mm×10mm.

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