Servo ultrasonic welder

Abstract

The utility model provides a kind of servo ultrasonic welding machine, belong to welding machine technical field;Including iron square machine frame, the inside installation of iron square machine frame has ultrasonic wave electric box, the side surface of ultrasonic wave electric box is equipped with electric cabinet, the top of iron square machine frame is fixed with mesa plate, the side surface of iron square machine frame is fixed with bevel mounting plate, the surface of bevel mounting plate is equipped with touch screen.The utility model is through setting security grating, when security grating uses, transmitting end and receiving end are installed in the surface of two adjustable upright column in pairs, when servo ultrasonic welding machine operates, if operator hand or other object enters welding area and blocks light path, receiving end cannot receive complete light signal, will immediately output stop signal, trigger welding machine emergency stop, avoid high-frequency vibration energy injures, realize the safety protection to operator, after the removal of shielding object, light path restores unobstructed, equipment needs to be reset after operation can be restarted.

Description

Technical Field

[0001] This utility model relates to the field of welding machine technology, and in particular to a servo ultrasonic welding machine. Background Technology

[0002] A servo ultrasonic welding machine is a device that uses a servo motor drive system and ultrasonic vibration energy for welding. It applies high-frequency mechanical vibration energy to the contact surface of the workpieces to be welded, causing local high temperature and plastic deformation, thereby achieving solid-state bonding of materials. This device can precisely control key parameters such as amplitude, pressure, and welding time, and is suitable for precision welding needs of various materials such as plastics and metals.

[0003] When a servo ultrasonic welding machine is running, its welding head generates high-frequency mechanical vibration and applies pressure. If the operator's hand accidentally enters the welding area and comes into direct contact with the welding head or workpiece which is in a high-frequency vibration state, it may cause numbness of the fingers, subcutaneous tissue damage, and in severe cases, even damage to the finger bones or joints. The safety protection performance needs to be improved. Therefore, this application provides a servo ultrasonic welding machine to meet the needs. Utility Model Content

[0004] This invention provides a servo ultrasonic welding machine to address the issue of insufficient safety protection performance.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A servo ultrasonic welding machine includes a steel square tube frame. An ultrasonic electrical box is installed inside the steel square tube frame, and an electrical control box is installed on the side of the ultrasonic electrical box. A table panel is fixed on the top of the steel square tube frame, and an inclined mounting plate is fixed on the side of the steel square tube frame. A touch screen is installed on the surface of the inclined mounting plate. A liftable ultrasonic transducer is installed on the top of the table panel, and an ultrasonic mold is installed at the bottom of the ultrasonic transducer. The ultrasonic mold is located above a product fixture. A safety light curtain is installed above the table panel. The ultrasonic electrical box, touch screen, electrical control box, safety light curtain, and ultrasonic transducer are electrically connected.

[0007] Preferably, each bottom corner of the steel square tube frame is fixed with an integrated caster foot cup.

[0008] Preferably, an adjustment component is fixed to the top of the platform, and a lifting component is installed on the adjustment component. The adjustment component is used to support the lifting component, and the lifting component is used to drive the ultrasonic transducer to rise and fall.

[0009] Preferably, the adjustment assembly includes several adjustable columns fixed to the top of the platform, the surfaces of the several adjustable columns are movably fitted with the same middle plate, the top of the middle plate is equipped with an aluminum profile protective cover, the surface of the same adjustable column is threaded with two adjusting and fixing nuts, the two adjusting and fixing nuts are respectively attached to the upper and lower sides of the middle plate, the lifting assembly is installed on the top of the middle plate, and a circular hole is opened in the middle of the middle plate, through which the ultrasonic transducer passes.

[0010] Preferably, the lifting assembly includes several guide rods two fixed to the top of the middle plate, the surfaces of the several guide rods two being movably sleeved with the same upper plate, the top of the several guide rods two being fixed with a top plate, a driving component being installed above the top plate, the driving component being used to drive the upper plate to lift, and several guide rods one fixed to the bottom of the upper plate, the bottom of the guide rods one movably penetrating the middle plate and being fixedly connected to a lower plate, the lower plate being used to install an ultrasonic transducer.

[0011] Preferably, an ultrasonic flange is fixedly sleeved on the surface of the ultrasonic transducer, and a horizontal adjusting screw is threaded to the bottom of the ultrasonic flange. The ultrasonic flange is fixed to the bottom of the lower plate by the horizontal adjusting screw.

[0012] Preferably, the driving component includes a servo motor fixed to the side of the top plate, a pulley 1 fixedly sleeved on the output shaft surface of the servo motor, a precision lead screw rotatably connected to the top of the top plate, the bottom of the precision lead screw movably penetrating through the upper plate, a pulley 2 fixedly sleeved on the top of the precision lead screw, the pulley 1 and pulley 2 rotating synchronously via a synchronous belt, and an internal threaded sleeve threadedly connected to the surface of the precision lead screw, the bottom of the internal threaded sleeve being fixed to the top of the upper plate.

[0013] Preferably, an origin sensor is mounted on the side of the upper plate.

[0014] Compared with the prior art, this utility model has at least the following beneficial effects:

[0015] In the above scheme, a safety light curtain is set up. When the safety light curtain is in use, the transmitter and receiver are installed in pairs on the surface of two adjustable columns. When the servo ultrasonic welding machine is running, if the operator's hand or other objects enter the welding area and block the light path, the receiver will not be able to receive the complete light signal and will immediately output a stop signal to trigger the welding machine to stop in an emergency, so as to avoid injury from high-frequency vibration energy and achieve safety protection for the operator. After the obstruction is removed and the light path is restored, the equipment must be reset before it can be restarted. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the servo motor structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the product clamping structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the ultrasonic mold structure of this utility model.

[0020] In the diagram: 1. Integrated caster feet; 2. Ultrasonic control box; 3. Iron square tube frame; 4. Touch screen; 5. Safety light curtain; 6. Product clamp; 7. Aluminum profile protective cover; 8. Ultrasonic mold; 9. Adjustable column; 10. Tabletop; 11. Angled mounting plate; 12. Electrical control box; 13. Ultrasonic transducer; 14. Ultrasonic flange; 15. Guide rod one; 16. Guide rod two; 17. Precision lead screw; 18. Synchronous belt; 19. Servo motor; 20. Origin sensor; 21. Adjusting fixing nut; 22. Horizontal adjusting screw; 23. Middle plate; 24. Top plate; 25. Internal threaded sleeve.

[0021] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0022] The servo ultrasonic welding machine provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0023] like Figures 1-4As shown, an embodiment of this utility model provides a servo ultrasonic welding machine, including a square tube frame 3. An ultrasonic power supply box 2 is installed inside the square tube frame 3. An electrical control box 12 is installed on the side of the ultrasonic power supply box 2. A table panel 10 is fixed to the top of the square tube frame 3. An inclined mounting plate 11 is fixed to the side of the square tube frame 3. A touch screen 4 is installed on the surface of the inclined mounting plate 11. A liftable ultrasonic transducer 13 is installed on the top of the table panel 10. An ultrasonic mold 8 is installed at the bottom of the ultrasonic transducer 13, located above a product fixture 6. A safety light curtain 5 is installed above the table panel 10. The ultrasonic power supply box 2, touch screen 4, electrical control box 12, safety light curtain 5, and ultrasonic transducer 13 are electrically connected. The square tube frame 3 is welded from square tubes, providing stable support for the entire machine, preventing frame deformation due to vibration during welding, and ensuring welding accuracy. The ultrasonic power box 2 provides high-frequency electrical energy to the ultrasonic transducer 13, converting electrical energy into mechanical vibration energy. The power control box 12 integrates a PLC control system to realize the linkage control of various components, such as lifting, wave generation, and shutdown, ensuring the automation of the welding process. The platform 10 provides an installation platform for the product fixture 6 and adjustment components. The surface is milled to ensure the positioning accuracy of the fixture and mold. The tilt angle of the inclined mounting plate 11 conforms to ergonomics, allowing operators to view the touch screen 4 without bending over, and conveniently set welding parameters such as pressure, time, and frequency, improving operating efficiency. The ultrasonic transducer 13 drives the ultrasonic mold 8 to lift and lower, and the high-frequency vibration melts and welds the contact surface of the plastic product. The product fixture 6 fixes the product to be welded to prevent displacement during welding. The safety light curtain 5 forms a "protective barrier". If an object blocks the light path, it will immediately trigger a shutdown to prevent injury from the high-frequency vibration of the mold and ensure operational safety.

[0024] like Figures 1-3 As shown in this embodiment, each bottom corner of the iron square tube frame 3 is fixed with an integrated caster foot cup 1. The integrated caster foot cup 1 integrates the functions of "movement" and "fixation". The caster adopts silent universal wheels, which can easily push the whole machine to move, making it convenient to adjust the position of the equipment in the workshop or move it to the maintenance area. The foot cup has a threaded adjustment structure, which can be raised and lowered by rotating. After the equipment is positioned, the frame is kept level by adjusting the foot cup, which avoids the mold and fixture from being misaligned during welding due to uneven ground. At the same time, the foot cup has a large friction with the ground, which prevents the equipment from sliding during operation.

[0025] like Figure 2 and Figure 4As shown in this embodiment, an adjustment component is fixed to the top of the table panel 10, and a lifting component is installed on the adjustment component. The adjustment component is used to support the lifting component, and the lifting component is used to drive the ultrasonic transducer 13 to rise and fall. The adjustment component provides stable support for the lifting component and can adjust the overall height of the lifting component to adapt to products of different heights without changing the entire machine structure, thus improving the equipment's versatility. The lifting component makes stable contact with the product through precise up and down movement, ensuring that the welding pressure is applied evenly and avoiding uneven pressure that could lead to weak welding or cracking of the product, thus ensuring welding quality.

[0026] like Figure 2 and Figure 4 As shown, in this embodiment, the adjustment assembly includes several adjustable columns 9 fixed to the top of the platform 10. The surfaces of the adjustable columns 9 are movably fitted with the same middle plate 23. An aluminum profile protective cover 7 is installed on the top of the middle plate 23. Two adjusting nuts 21 are threadedly connected to the surface of the same adjustable column 9, and the two adjusting nuts 21 are respectively attached to the upper and lower sides of the middle plate 23. The lifting assembly is installed on the top of the middle plate 23. A circular hole is opened in the middle of the middle plate 23, through which the ultrasonic transducer 13 passes. The adjustable columns 9 provide vertical guidance for the middle plate 23, ensuring the vertical alignment of the middle plate 23. 3. There is no tilting during lifting. Two adjusting nuts 21 clamp the middle plate 23 through threaded engagement, thereby fixing the height of the middle plate 23. The adjustment is convenient, and the height can be adjusted by simply rotating the nuts, which can adapt to the welding requirements of different products. The round hole in the middle of the middle plate 23 provides room for the ultrasonic transducer 13 to move, avoiding interference between the transducer and the middle plate 23 during lifting. The aluminum profile protective cover 7 is made of lightweight aluminum profile splicing, which can shield the moving parts of the lifting assembly, prevent operators from accidentally touching and getting injured, and at the same time block dust and impurities from entering the interior of the assembly, reduce mechanical wear, and extend the service life of the lifting assembly.

[0027] like Figure 2 and Figure 4 As shown in this embodiment, the lifting assembly includes several guide rods 16 fixed to the top of the middle plate 23. The surfaces of the several guide rods 16 are movably sleeved on the same upper plate 24. A top plate is fixed to the top of the several guide rods 16. A driving component is installed above the top plate to drive the upper plate 24 to lift. Several guide rods 15 are fixed to the bottom of the upper plate 24. The bottom of the guide rods 15 movably passes through the middle plate 23 and is fixedly connected to a lower plate. The lower plate is used to install the ultrasonic transducer 13. The guide rods 16 provide vertical guidance for the upper plate 24 to ensure that the upper plate 24 is stable and does not shake when it is lifted. The guide rods 15 are rigidly connected to the upper plate 24 and the lower plate to form a "synchronous lifting structure", which drives the lower plate and the ultrasonic transducer 13 to move smoothly and avoids uneven contact between the ultrasonic mold 8 and the product due to the transducer tilting. The lower plate provides the installation base for the transducer. The surface is precision machined to ensure that the transducer is perpendicular to the product surface after installation, further ensuring welding accuracy.

[0028] like Figure 2 and Figure 4 As shown in this embodiment, an ultrasonic flange 14 is fixedly sleeved on the surface of the ultrasonic transducer 13. A horizontal adjustment screw 22 is threadedly connected to the bottom of the ultrasonic flange 14. The ultrasonic flange 14 is fixed to the bottom of the lower plate by the horizontal adjustment screw 22. The ultrasonic flange 14 provides installation support for the ultrasonic transducer 13. The horizontal adjustment screw 22, usually 3-4, is distributed in a circle to finely adjust the horizontality of the transducer. If there is a slight misalignment between the ultrasonic mold 8 and the product fixture 6, rotating the adjustment screw can make the mold accurately align with the fixture, avoiding product welding misalignment due to mold misalignment and greatly improving welding quality.

[0029] like Figure 2 and Figure 4 As shown in this embodiment, the driving component includes a servo motor 19 fixed to the side of the top plate. A pulley 1 is fixedly sleeved on the output shaft surface of the servo motor 19. A precision lead screw 17 is rotatably connected to the top of the top plate. The bottom of the precision lead screw 17 movably passes through the upper plate 24. A pulley 2 is fixedly sleeved on the top of the precision lead screw 17. The pulley 1 and pulley 2 rotate synchronously through a synchronous belt 18. An internal threaded sleeve 25 is threadedly connected to the surface of the precision lead screw 17. The bottom of the internal threaded sleeve 25 is fixed to the top of the upper plate 24. The servo motor 19 has high-precision speed control and high torque output. It drives the precision lead screw 17 to rotate through the synchronous belt 18, converting the rotational motion into the linear motion of the internal threaded sleeve 25, thereby driving the upper plate 24 to rise and fall.

[0030] like Figure 2 and Figure 4 As shown in this embodiment, an origin sensor 20 is installed on the side of the upper plate 24. The origin sensor 20 is a photoelectric or magnetic induction sensor used to locate the initial position of the upper plate 24, i.e., the origin. After the equipment is started or welding is completed, the servo motor 19 drives the upper plate 24 to move upward. When the sensor detects the origin signal, the upper plate 24 stops immediately, ensuring that the ultrasonic transducer 13 returns to the same initial position after each welding. This avoids inconsistencies in welding pressure and stroke due to initial position deviation, ensuring the quality stability of batch welding. At the same time, the origin sensor 20 can also prevent the upper plate 24 from moving too upward, causing collision damage to the lifting components, thus playing a limit protection role and extending the service life of the equipment.

[0031] Working principle: Check the integrated caster feet 1 at the bottom of the steel square tube frame 3 and adjust them to ensure stable support for the whole machine. Confirm that the electrical connection between the ultrasonic electrical box 2 inside the steel square tube frame 3, the electrical control box 12 on the side, the touch screen 4 on the surface of the inclined mounting plate 11, the safety light curtain 5 above the table panel 10, and the ultrasonic transducer 13 is normal. According to the product to be welded, replace the product clamp 6 on the table panel 10 and the ultrasonic mold 8 at the bottom of the ultrasonic transducer 13. Adjust the level of the ultrasonic mold 8 by adjusting the horizontal adjusting screw 22 at the bottom of the ultrasonic flange 14 to ensure that it is aligned with the product clamp 6. Rotate the two adjusting fixing nuts 21 on the surface of the adjustable column 9 to drive the middle plate 23 to rise and fall along the adjustable column 9. Adjust the height of the lifting component so that after the ultrasonic transducer 13 passes through the round hole in the middle of the middle plate 23, the distance between the ultrasonic mold 8 and the product clamp 6 is appropriate. Then tighten the adjusting fixing nuts 21 to fix the middle plate 23. At the same time, confirm that the aluminum profile protective cover 7 on the top of the middle plate 23 is installed in place.

[0032] On the touch screen 4, the welding parameters, including servo pressure, ultrasonic wave emission time, vibration frequency, etc., are set through the PLC control system. After the parameters are set, check and ensure that the optical path between the transmitter and receiver of the safety light curtain 5 is unobstructed and in normal monitoring state.

[0033] The operator manually places the plastic product into the product clamp 6 on the table panel 10 to ensure accurate product positioning. The operator presses the manual double-button start switch of the equipment. If there is no hand or other object blocking the area monitored by the safety light curtain 5, the equipment starts normally. If there is an obstruction, the equipment cannot start and descend. The obstruction must be removed and the equipment restarted.

[0034] After the equipment is started, the electrical control box 12 controls the servo motor 19 in the drive unit to run. The output shaft of the servo motor 19 drives the pulley one to rotate, which drives the pulley two and the precision lead screw 17 to rotate synchronously through the synchronous belt 18. The internal thread sleeve 25 on the surface of the precision lead screw 17 drives the upper plate 24 to move smoothly down along the guide rod two 16. The guide rod one 15 at the bottom of the upper plate 24 moves down synchronously, pushing the lower plate and the ultrasonic transducer 13 installed at the bottom of the lower plate down until the ultrasonic mold 8 contacts the product surface and applies the set servo pressure.

[0035] When the ultrasonic mold 8 applies pressure to the set value, the PLC sends a command to the ultrasonic power box 2. The ultrasonic power box 2 drives the ultrasonic transducer 13 to generate high-frequency vibration at the set vibration frequency. The vibration is transmitted to the product contact surface through the ultrasonic mold 8 to achieve welding.

[0036] After the welding reaches the set wave emission time, the ultrasonic power box 2 stops emitting waves, the servo motor 19 reverses, and drives the precision lead screw 17 to rotate in the opposite direction. The internal thread sleeve 25 drives the upper plate 24, the guide rod 15, the lower plate and the ultrasonic transducer 13 to move upward until the origin sensor 20 on the side of the upper plate 24 detects the origin signal. The ultrasonic transducer 13 stops moving upward and returns to the initial position.

[0037] The welded product is manually removed from the product fixture 6, and a new plastic product to be welded is placed in. The above steps are repeated for continuous welding operations. If, during the downward movement of the ultrasonic transducer 13, the safety light curtain 5 detects a human hand or other object entering the monitoring area, it immediately outputs a stop signal, triggering an emergency shutdown of the equipment. The ultrasonic transducer 13 stops moving downward and immediately moves upward back to its original position. After the obstruction is removed, the equipment needs to be reset before it can be restarted.

[0038] After completing all welding tasks, stop the equipment operation on the touch screen 4 and turn off the power to the ultrasonic power box 2 and the electrical control box 12.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A servo ultrasonic welding machine, characterized in that, The device includes a square tube frame (3), an ultrasonic power box (2) is installed inside the square tube frame (3), an electrical control box (12) is installed on the side of the ultrasonic power box (2), a table panel (10) is fixed on the top of the square tube frame (3), an inclined mounting plate (11) is fixed on the side of the square tube frame (3), a touch screen (4) is installed on the surface of the inclined mounting plate (11), a liftable ultrasonic transducer (13) is installed on the top of the table panel (10), an ultrasonic mold (8) is installed at the bottom of the ultrasonic transducer (13), the ultrasonic mold (8) is located above the product fixture (6), a safety light curtain (5) is installed above the table panel (10), and the ultrasonic power box (2), touch screen (4), electrical control box (12), safety light curtain (5) and ultrasonic transducer (13) are electrically connected.

2. The servo ultrasonic welding machine according to claim 1, characterized in that, All the bottom corners of the iron square tube frame (3) are fixed with integrated caster feet (1).

3. The servo ultrasonic welding machine according to claim 1, characterized in that, An adjustment component is fixed to the top of the platform (10), and a lifting component is installed on the adjustment component. The adjustment component is used to support the lifting component, and the lifting component is used to drive the ultrasonic transducer (13) to rise and fall.

4. The servo ultrasonic welding machine according to claim 3, characterized in that, The adjustment assembly includes several adjustable columns (9) fixed to the top of the tabletop (10). The surfaces of the several adjustable columns (9) are movably fitted with the same middle plate (23). An aluminum profile protective cover (7) is installed on the top of the middle plate (23). Two adjusting fixing nuts (21) are threadedly connected to the surface of the same adjustable column (9). The two adjusting fixing nuts (21) are respectively attached to the upper and lower sides of the middle plate (23). The lifting assembly is installed on the top of the middle plate (23). A round hole is opened in the middle of the middle plate (23), and the ultrasonic transducer (13) passes through the round hole.

5. The servo ultrasonic welding machine according to claim 4, characterized in that, The lifting assembly includes several guide rods 2 (16) fixed to the top of the middle plate (23). The surface of the several guide rods 2 (16) is movably sleeved with the same upper plate (24). The top of the several guide rods 2 (16) is fixed with a top plate. A driving component is installed above the top plate. The driving component is used to drive the upper plate (24) to lift. Several guide rods 1 (15) are fixed to the bottom of the upper plate (24). The bottom of the guide rods 1 (15) movably passes through the middle plate (23) and is fixedly connected to a lower plate. The lower plate is used to install an ultrasonic transducer (13).

6. The servo ultrasonic welding machine according to claim 5, characterized in that, The ultrasonic transducer (13) is fixedly fitted with an ultrasonic flange (14), and the bottom of the ultrasonic flange (14) is threaded with a horizontal adjusting screw (22). The ultrasonic flange (14) is fixed to the bottom of the lower plate by the horizontal adjusting screw (22).

7. The servo ultrasonic welding machine according to claim 5, characterized in that, The driving component includes a servo motor (19) fixed to the side of the top plate. A pulley is fixedly sleeved on the output shaft surface of the servo motor (19). A precision lead screw (17) is rotatably connected to the top of the top plate. The bottom of the precision lead screw (17) moves through the upper plate (24). A pulley is fixedly sleeved on the top of the precision lead screw (17). The pulley and the pulley rotate synchronously through a synchronous belt (18). An internal thread sleeve (25) is threadedly connected to the surface of the precision lead screw (17). The bottom of the internal thread sleeve (25) is fixed to the top of the upper plate (24).

8. The servo ultrasonic welding machine according to claim 7, characterized in that, The origin sensor (20) is mounted on the side of the upper plate (24).

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