An organic film ultrasonic welding apparatus

Abstract

The present application relates to the field of welding facilities, especially to an organic film ultrasonic welding device, comprising a device main body, the inside of the device main body is provided with a welding workbench, the welding workbench is provided with an anti-offset guiding and positioning structure between the welding workbench and the device main body, the inside of the welding workbench is provided with longitudinal and transverse intersecting vacuum suction air ducts, the upper end of the welding workbench is fixedly installed with a vacuum suction plate, a plurality of suction holes are penetrated and arranged on the vacuum suction plate in a rectangular array, the suction holes are communicated with the vacuum suction air ducts, and supports are fixedly installed on the two sides of the welding workbench. The present application avoids that the clamping force is too large to cause the film material to wrinkle or be damaged, ensures the positioning accuracy of the film material in the welding process, and avoids that the smoke and micro debris generated in the welding process affect the working environment and product cleanliness.

Description

Technical Field

[0001] This invention relates to the field of welding facilities, and more particularly to an ultrasonic welding device for organic films. Background Technology

[0002] Organic membranes are a type of thin film material made of polymer materials, which are lightweight, flexible, and resistant to chemical corrosion. A large number of organic membranes can be recycled using plastic waste recycling technology, which not only improves resource utilization and reduces production costs, but also conforms to the concept of green and low-carbon production. In industrial production, they are often cut to specific specifications and then precisely stacked with each sheet offset by a few millimeters. Finally, they are firmly connected between layers using ultrasonic welding technology.

[0003] However, existing ultrasonic welding equipment relies heavily on traditional rigid clamping structures to fix organic membranes and other membrane materials. These rigid clamping mechanisms lack adaptability to the characteristics of membrane materials. In particular, recycled organic membranes, due to differences in plastic waste recycling processes, have slightly lower material uniformity than virgin membranes, requiring more precise force control. Existing mechanisms struggle to accurately adjust the clamping force, easily leading to excessive clamping force. Excessive clamping force not only directly causes wrinkles or damage to the membrane material but also disrupts its original flatness, affecting the positioning accuracy of the membrane material during welding and thus reducing the yield of recycled organic membrane products. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by proposing an ultrasonic welding device for organic films.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an organic film ultrasonic welding device, comprising a main body, a welding worktable disposed inside the main body, an anti-deviation guide positioning structure disposed between the welding worktable and the main body, a crisscrossing vacuum adsorption air channel disposed inside the welding worktable, a vacuum adsorption plate fixedly mounted on the upper end of the welding worktable, a plurality of adsorption holes being formed through the vacuum adsorption plate, the plurality of adsorption holes being arranged in a rectangular array, the adsorption holes being connected to the vacuum adsorption air channel, supports fixedly mounted on both sides of the welding worktable, a plurality of servo push cylinders fixedly mounted on the upper end of each of the two supports, a connecting seat fixedly mounted on the output end of each servo push cylinder, an elastic pressure block mounted on the lower end of the connecting seat, a butterfly spring disposed inside the elastic pressure block, a negative pressure dust removal welding component disposed between the ends of the two supports, and a PLC control panel mounted on the upper front end of the main body, the servo push cylinders being electrically connected to the PLC control panel.

[0006] Preferably, a vacuum tube is fixedly connected to the corner of the welding workbench, and a solenoid valve is installed on the vacuum tube. The solenoid valve is electrically connected to the PLC control panel.

[0007] Preferably, the anti-offset guiding and positioning structure includes positioning stops extending to the upper two edges of the welding workbench, a vacuum adsorption plate located between the two positioning stops, guide wheels provided in front of each of the two positioning stops, a micro encoder installed inside the guide wheels, a base provided below the welding workbench, the base being fixed to the inner bottom surface of the equipment body, a bearing cavity penetrating through the middle of the base, an adjusting seat slidably installed inside the bearing cavity, a threaded post being screwed through the middle of the adjusting seat, one end of the threaded post being rotatably connected to the inner side of the bearing cavity, and the other end of the threaded post being rotatably protruding from the side of the base, a second servo motor being fixedly installed on the side of the base, the output end of the second servo motor being fixed to the threaded post, and the micro encoder, the second servo motor, and the PLC control panel being electrically connected.

[0008] Preferably, a screw is rotatably mounted at the center of the front end of the welding workbench, and a pusher is screwed onto the outer surface of the screw. Two concave slides are symmetrically fixedly mounted at the front end of the welding workbench, with the screw located between the two concave slides. The pusher is slidably mounted inside the concave slides. Adjustment frames are rotatably mounted at both ends of the pusher. A wheel frame is rotatably mounted at the end of the adjustment frame. A guide wheel is rotatably mounted at the end of the wheel frame. A guide ear is slidably mounted through the corner of the wheel frame, and the end of the guide ear is fixed to the welding workbench.

[0009] Preferably, the front and rear ends of the adjusting seat are extended with slide bars, and the front and rear ends of the bearing cavity are provided with slide grooves, and the slide bars are slidably installed inside the slide grooves.

[0010] Preferably, the negative pressure dust removal welding component includes an ultrasonic welding gun, with an annular gas collection hood covering the welding head of the ultrasonic welding gun. The main body of the equipment is provided with a smoke exhaust pipe, the end of which is fixedly connected to the annular gas collection hood. A filter is fixedly installed inside the smoke exhaust pipe. A servo slide is fixedly installed between the ends of the two supports. A support base is fixedly installed on the slide of the servo slide. A lifting frame is slidably installed at the front end of the support base. The ultrasonic welding gun is fixed to the lifting frame, and the positioning stop is parallel to the axis of the welding head of the ultrasonic welding gun.

[0011] Preferably, a threaded rod is screwed through the middle of the lifting frame, and the two ends of the threaded rod are rotatably connected to the bearing seat. A first servo motor is fixedly installed at the upper end of the bearing seat, and the output end of the first servo motor passes through the lower end of the bearing seat. The output end of the first servo motor is fixed to the threaded rod. The first servo motor, the ultrasonic welding gun, and the PLC control panel are electrically connected.

[0012] Preferably, both ends of the lifting frame are slidably mounted with slide rails, and the rear end of the slide rails is fixed to the support seat.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the design of multiple independent flexible clamping units, each unit adopts a composite structure of elastic pressure block and vacuum adsorption. The elastic pressure block is made of silicone material with a Shore hardness of 30-50 degrees. The pressure is adaptively adjusted by the built-in butterfly spring. It is equipped with a microporous vacuum adsorption plate below, with adsorption holes of 0.1-0.3mm in diameter, distributed in a matrix. The adsorption area is controlled by PLC. This structure can avoid excessive clamping force that may cause wrinkles or damage to the membrane material, while ensuring that the positioning accuracy of the membrane material during the welding process is ≤0.05mm.

[0014] 2. A combination structure of rigid positioning guards and flexible guide wheels is set on both sides of the welding workbench. The rigid guards are made of aluminum alloy and are laser-calibrated to ensure that the parallelism with the welding head axis is ≤0.03mm. The spacing of the flexible guide wheels can be adjusted by a fine-tuning screw. Each guide wheel has a built-in micro encoder to monitor the film material movement speed in real time. When the detected offset exceeds 0.05mm, the PLC control panel controls the second servo motor to correct the deviation, so as to ensure that the welding alignment accuracy is improved to ±0.02mm.

[0015] 3. The welding workbench is designed with a crisscrossing vacuum adsorption air channel, and the surface is covered with adsorption holes. It is linked to the PLC control panel through a solenoid valve. A ring-shaped gas collection hood is set around the welding head of the ultrasonic welding gun. The gas collection hood is connected to the exhaust duct of the main body of the equipment. The duct integrates a small filter. The vacuum adsorption and exhaust system is linked with the equipment PLC to realize an automated process of adsorption and positioning before welding and exhausting smoke at the same time. This solves the problem that the organic film may attract dust or be mispositioned due to electrostatic attraction before welding, and the smoke and trace debris generated during welding may affect the working environment and product cleanliness. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an organic film ultrasonic welding device according to the present invention; Figure 2 This is a schematic diagram of the welding worktable of an organic film ultrasonic welding device according to the present invention; Figure 3This is a schematic diagram of the support seat of an organic film ultrasonic welding device according to the present invention; Figure 4 This is an internal view of the exhaust duct of an organic membrane ultrasonic welding device according to the present invention; Figure 5 This is a bottom view of the welding worktable of an ultrasonic welding device for organic films according to the present invention. Figure 6 This invention relates to an ultrasonic welding device for organic films. Figure 5 Enlarged view of A in the middle; Figure 7 This is an internal view of the welding workbench of an organic film ultrasonic welding device according to the present invention; Figure 8 This is a schematic diagram of the pusher section of an organic film ultrasonic welding device according to the present invention; Figure 9 This is an internal view of the guide wheel of an ultrasonic welding device for organic films according to the present invention; Figure 10 This is an internal view of the elastic pressure block of an organic film ultrasonic welding device according to the present invention.

[0017] In the diagram: 1. Main body of the equipment; 2. PLC control panel; 3. Welding workbench; 4. Vacuum adsorption air duct; 5. Vacuum tube; 6. Solenoid valve; 7. Servo motor No. 1; 8. Bearing seat; 9. Slide rail; 10. Lifting frame; 11. Ultrasonic welding gun; 12. Exhaust duct; 13. Threaded rod; 14. Annular gas collection hood; 15. Servo push cylinder; 16. Connecting seat; 17. Elastic pressure block; 18. Servo slide table; 19. Support; 20. Servo motor No. 2; 21. Positioning stop; 22. Push frame; 23. Vacuum adsorption plate; 24. Adsorption hole; 25. Guide wheel; 26. Guide ear; 27. Wheel frame; 28. Adjusting frame; 29. ​​Concave slide seat; 30. Screw; 31. Miniature encoder; 32. Butterfly spring; 33. Filter; 34. Base; 35. Adjusting seat; 36. Threaded column; 37. Slide groove; 38. Bearing cavity; 39. Slide bar. Detailed Implementation

[0018] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0019] like Figures 1-10An ultrasonic welding device for organic films is shown, comprising a main body 1, a welding worktable 3 inside the main body 1, and an anti-deviation guide positioning structure between the welding worktable 3 and the main body 1. This anti-deviation guide positioning structure solves the problem of deviation caused by vibration during the welding process of organic films. The welding worktable 3 has crisscrossing vacuum adsorption channels 4 inside. A vacuum adsorption plate 23 is fixedly installed on the upper end of the welding worktable 3. Multiple adsorption holes 24 are formed through the vacuum adsorption plate 23, allowing the film material to be adsorbed and fixed through these holes. The multiple adsorption holes 24 are arranged in a rectangular array, with a diameter of 0.1-0.3 mm. The adsorption holes 24 are connected to the vacuum adsorption channels 4. Supports 19 are fixedly installed on both sides of the welding worktable 3, and multiple servo push cylinders 1 are fixedly installed on the upper end of each support 19. 5. The bracket 19 serves to support the servo push cylinder 15. The output end of the servo push cylinder 15 is fixedly installed with a connecting seat 16. The lower end of the connecting seat 16 is installed with an elastic pressure block 17. The servo push cylinder 15 can drive the elastic pressure block 17 to move down and press and fix the membrane material. The elastic pressure block 17 is made of silicone material with a Shore hardness of 30-50 degrees. The elastic pressure block 17 is equipped with a butterfly spring 32 to realize pressure self-adjustment. It is equipped with a vacuum adsorption plate 23 below. The adsorption area is controlled by PLC. This structure can avoid excessive clamping force causing wrinkles or damage to the membrane material, and at the same time ensure that the positioning accuracy of the membrane material during the welding process is ≤0.05mm. A negative pressure dust removal welding component is set between the ends of the two brackets 19. The front upper part of the main body 1 is equipped with a PLC control panel 2. The PLC control panel 2 plays a control role. The servo push cylinder 15 is electrically connected to the PLC control panel 2.

[0020] A vacuum tube 5 is fixedly connected to the corner of the welding workbench 3. The vacuum tube 5 is connected to an external vacuum pump to generate suction. A solenoid valve 6 is installed on the vacuum tube 5. The solenoid valve 6 is used to open and close the valve. The solenoid valve 6 is electrically connected to the PLC control panel 2.

[0021] The anti-deviation guide positioning structure includes positioning stops 21 extending from the upper two edges of the welding worktable 3. The positioning stops 21 serve a positioning function and are made of aluminum alloy. Laser calibration ensures parallelism with the welding head axis of the ultrasonic welding gun 11 is ≤0.03mm. A vacuum adsorption plate 23 is located between the two positioning stops 21. Guide wheels 25 are provided in front of each of the two positioning stops 21. The guide wheels 25 are made of flexible materials such as silicone to prevent scratching the film material. A miniature encoder 31 is installed inside the guide wheels 25. A base 34 is provided below the welding worktable 3, and the base 34 is fixed to the inner bottom surface of the equipment body 1. A bearing cavity 38 is formed through the center of the base 34. An adjusting seat 35 is slidably installed inside the bearing cavity 38, accommodating the adjusting seat 35. A threaded post 36 is screwed through the center of the adjusting seat 35. The threaded column 36 is rotatably connected to the inner side of the bearing cavity 38, and can drive the adjusting seat 35 to move to adjust the position of the welding worktable 3. The other end of the threaded column 36 rotates through the side of the base 34. The second servo motor 20 is fixedly installed on the side of the base 34. The output end of the second servo motor 20 is fixed to the threaded column 36. The second servo motor 20 drives the threaded column 36 to rotate. The micro encoder 31, the second servo motor 20 and the PLC control panel 2 are electrically connected. When the film material is transferred to the welding worktable 3, the micro encoder 31 built into the guide wheel 25 will monitor the moving speed and position of the film material in real time. If the film material is laterally offset, the rotation speed of the two guide wheels 25 will have a slight difference. Then the PLC system calculates the actual offset of the film material by comparing the signals of the two micro encoders 31. When the offset exceeds the set threshold of 0.05mm, the PLC will immediately trigger the correction program and control the second servo motor 20 to work to drive the welding worktable 3 to make a slight lateral movement and correct the position of the film material to the correct welding path.

[0022] A screw 30 is rotatably mounted at the center of the front end of the welding workbench 3. A pusher 22 is screwed onto the outer surface of the screw 30. Two concave slides 29 are symmetrically fixedly mounted at the front end of the welding workbench 3. The screw 30 is located between the two concave slides 29. The pusher 22 is slidably mounted inside the concave slides 29, which rotate the pusher 22. Adjustment frames 28 are rotatably mounted at both ends of the pusher 22. A wheel frame 27 and a guide wheel 25 are rotatably mounted at the end of the adjustment frame 28. Rotatably mounted at the end of wheel frame 27, wheel frame 27 serves to support guide wheel 25. Guide ear 26 is slidably mounted through the corner of wheel frame 27, guide ear 26 serves to guide wheel frame 27. The end of guide ear 26 is fixed to welding workbench 3. By rotating screw 30, push frame 22 can be moved, thereby driving adjustment frame 28 to move, so as to push guide wheel 25 on two wheel frames 27 to move towards each other, so as to fine adjust the distance between two guide wheel 25.

[0023] The front and rear ends of the adjusting seat 35 are extended with slide bars 39, and the front and rear ends of the bearing cavity 38 are provided with slide grooves 37. The cooperation between the slide bars 39 and the slide grooves 37 enhances the guiding effect on the adjusting seat 35. The slide bars 39 are slidably installed inside the slide grooves 37.

[0024] The negative pressure dust removal welding component includes an ultrasonic welding gun 11, which is connected to an external welding machine to perform welding operations. An annular gas collection hood 14 is installed over the welding head of the ultrasonic welding gun 11, serving a covering function. A smoke exhaust pipe 12 is installed on the main body 1, connected to an external fan to generate suction for smoke extraction. The end of the smoke exhaust pipe 12 is fixedly connected to the annular gas collection hood 14. A filter 33 is fixedly installed inside the smoke exhaust pipe 12, serving a filtering function. A servo slide 18 is fixedly installed between the ends of two supports 19, and a support seat 8 is fixedly installed on the slide of the servo slide 18. The servo slide 18 functions to change the left and right position of the ultrasonic welding gun 11. A lifting frame 10 is slidably installed at the front end of the support seat 8. The ultrasonic welding gun 11 is fixed to the lifting frame 10 and serves to support the lifting frame 10. The positioning stop 21 is parallel to the axis of the welding head of the ultrasonic welding gun 11. The welding workbench 3 is designed with crisscrossing vacuum adsorption air channels 4. The table surface is covered with adsorption holes 24. It is linked to the PLC control panel 2 through a solenoid valve 6. A ring-shaped gas collection hood 14 is arranged around the welding head of the ultrasonic welding gun 11. The gas collection hood is connected to the exhaust pipe 12 of the main body of the equipment 1. The pipe integrates a small filter 33. The vacuum adsorption and exhaust system is linked with the equipment PLC to realize the automated process of adsorption and positioning before welding and exhaust at the same time. This solves the problem that the organic film may attract dust or be mispositioned due to electrostatic adsorption before welding, and the smoke and trace debris generated during the welding process may affect the working environment and product cleanliness.

[0025] A threaded rod 13 is screwed through the middle of the lifting frame 10. The two ends of the threaded rod 13 are rotatably connected to the bearing seat 8. The threaded rod 13 can drive the lifting frame 10 to move up and down, thereby driving the ultrasonic welding gun 11 to rise and fall. A servo motor 7 is fixedly installed at the upper end of the bearing seat 8. The output end of the servo motor 7 passes through the lower end of the bearing seat 8. The servo motor 7 drives the threaded rod 13 to rotate. The output end of the servo motor 7 is fixed to the threaded rod 13. The servo motor 7, the ultrasonic welding gun 11 and the PLC control panel 2 are electrically connected.

[0026] Both ends of the lifting frame 10 are slidably mounted with slide rails 9. The rear end of the slide rails 9 is fixed to the bearing seat 8. The slide rails 9 serve to allow the lifting frame 10 to slide.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. An ultrasonic welding device for organic films, comprising a main body (1), characterized in that: The equipment body (1) is equipped with a welding workbench (3) inside. An anti-deviation guide positioning structure is provided between the welding workbench (3) and the equipment body (1). The welding workbench (3) is equipped with crisscrossing vacuum adsorption channels (4). A vacuum adsorption plate (23) is fixedly installed on the upper end of the welding workbench (3). Multiple adsorption holes (24) are opened through the vacuum adsorption plate (23). The multiple adsorption holes (24) are arranged in a rectangular array. The adsorption holes (24) are connected to the vacuum adsorption channels (4). The welding workbench (3) is located on both sides. Each of the two brackets (19) is fixedly installed with a bracket (19). Multiple servo push cylinders (15) are fixedly installed on the upper end of each bracket (19). A connecting seat (16) is fixedly installed on the output end of each servo push cylinder (15). An elastic pressure block (17) is installed on the lower end of the connecting seat (16). A butterfly spring (32) is provided inside the elastic pressure block (17). A negative pressure dust removal welding part is provided between the ends of the two brackets (19). A PLC control panel (2) is installed on the upper front end of the main body of the equipment (1). The servo push cylinder (15) is electrically connected to the PLC control panel (2). A vacuum tube (5) is fixedly connected to the corner of the welding workbench (3), and a solenoid valve (6) is installed on the vacuum tube (5). The solenoid valve (6) is electrically connected to the PLC control panel (2). The anti-offset guiding and positioning structure includes positioning baffles (21) extending to the upper two edges of the welding workbench (3). The vacuum adsorption plate (23) is located between the two positioning baffles (21). Guide wheels (25) are provided in front of the two positioning baffles (21). A miniature encoder (31) is installed inside the guide wheels (25). A base (34) is provided below the welding workbench (3). The base (34) is fixed to the inner bottom surface of the equipment body (1). A bearing cavity (38) is provided through the middle of the base (34). An adjusting seat (35) is slidably installed inside the (38) and a threaded column (36) is screwed through the middle of the adjusting seat (35). One end of the threaded column (36) is rotatably connected to the inner side of the bearing cavity (38), and the other end of the threaded column (36) is rotatably protruding from the side of the base (34). A second servo motor (20) is fixedly installed on the side of the base (34). The output end of the second servo motor (20) is fixed to the threaded column (36). The micro encoder (31), the second servo motor (20), and the PLC control panel (2) are electrically connected.

2. The ultrasonic welding equipment for organic films according to claim 1, characterized in that: A screw (30) is rotatably mounted at the center of the front end of the welding workbench (3). A pusher (22) is screwed onto the outer surface of the screw (30). Two concave slides (29) are symmetrically fixed at the front end of the welding workbench (3). The screw (30) is located between the two concave slides (29). The pusher (22) is slidably mounted inside the concave slides (29). An adjustment frame (28) is rotatably mounted at both ends of the pusher (22). A wheel frame (27) is rotatably mounted at the end of the adjustment frame (28). A guide wheel (25) is rotatably mounted at the end of the wheel frame (27). A guide ear (26) is slidably mounted through the corner of the wheel frame (27). The end of the guide ear (26) is fixed to the welding workbench (3).

3. The ultrasonic welding equipment for organic films according to claim 1, characterized in that: The front and rear ends of the adjustment seat (35) are both extended with slide bars (39), and the front and rear ends of the bearing cavity (38) are both provided with slide grooves (37), and the slide bars (39) are slidably installed inside the slide grooves (37).

4. The ultrasonic welding equipment for organic films according to claim 1, characterized in that: The negative pressure dust removal welding component includes an ultrasonic welding gun (11), with an annular gas collection hood (14) covering the welding head of the ultrasonic welding gun (11). A smoke exhaust pipe (12) is provided on the main body (1) of the equipment. The end of the smoke exhaust pipe (12) is fixedly connected to the annular gas collection hood (14). A filter (33) is fixedly installed inside the smoke exhaust pipe (12). A servo slide (18) is fixedly installed between the ends of the two supports (19). A bearing seat (8) is fixedly installed on the slide of the servo slide (18). A lifting frame (10) is slidably installed at the front end of the bearing seat (8). The ultrasonic welding gun (11) is fixed to the lifting frame (10). The positioning stop (21) is parallel to the axis of the welding head of the ultrasonic welding gun (11).

5. An ultrasonic welding device for organic films according to claim 4, characterized in that: A threaded rod (13) is screwed through the middle of the lifting frame (10). The two ends of the threaded rod (13) are rotatably connected to the bearing seat (8). A first servo motor (7) is fixedly installed on the upper end of the bearing seat (8). The output end of the first servo motor (7) passes through the lower end of the bearing seat (8). The output end of the first servo motor (7) is fixed to the threaded rod (13). The first servo motor (7), the ultrasonic welding gun (11), and the PLC control panel (2) are electrically connected.

6. The ultrasonic welding equipment for organic films according to claim 5, characterized in that: Both ends of the lifting frame (10) are slidably mounted with slide rails (9), and the rear end of the slide rails (9) is fixed to the bearing seat (8).

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