A welding head assembly of an ultrasonic aluminum strip pressure welding machine

Abstract

The present invention discloses a welding head assembly of an ultrasonic aluminum strip pressure welding machine, comprising a mounting bracket, a splitting knife and a transducer arranged on the mounting bracket, the transducer being connected to the splitting knife, and further comprising a clamping assembly and a driving assembly respectively mounted on the mounting bracket, the driving assembly being used to drive the clamping assembly to clamp the aluminum strip, the clamping assembly comprising a first clamping arm and a second clamping arm respectively mounted on the mounting bracket, the first clamping arm comprising a driving part, an elastic part and a clamping part connected in sequence from top to bottom, the driving part being used to be connected to the driving assembly, the elastic part being connected to the mounting bracket, and a clamping gap for clamping the aluminum strip being formed between the clamping part and the second clamping part; the driving part is pressed by the driving assembly to cause the elastic part to deform, and the clamping part approaches the second clamping arm, thereby narrowing the clamping gap to clamp the aluminum strip, thereby reducing the risk of position deviation or change in tape travel due to pulling force on the aluminum strip, and facilitating improvement of production yield.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic welding equipment, in particular to a welding head assembly of an ultrasonic aluminum strip pressure welding machine. Background Art

[0002] In the production process of semiconductor devices, an ultrasonic welding machine is generally used to weld metal wires to chips. The ultrasonic wave from the ultrasonic generator generates high-frequency vibrations through the transducer and is transmitted to the splitter. When the splitter contacts the lead and the workpiece to be welded, the metal surfaces to be welded rub against each other under the action of pressure and vibration, the oxide film is destroyed, and plastic deformation occurs, causing the two pure metal surfaces to come into close contact, achieving atomic-distance bonding, and ultimately forming a strong mechanical connection.

[0003] The welding head of an existing ultrasonic aluminum strip welding machine typically consists of a splitter, a transducer, and a strip cutting mechanism. The transducer is connected to the splitter, providing vibration for the splitter during welding. The pressure mechanism provides the splitter's welding pressure. At the end of each weld, the strip is severed by the strip cutting mechanism. During this process, the strip is subjected to tensile forces. If the strip is not completely severed during the splitter's retraction, it can be pulled again. In severe cases, the strip can even shift position. This requires the equipment to be stopped and adjusted, severely impacting production yield. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a welding head assembly of an ultrasonic aluminum strip pressure welding machine with high production yield.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a welding head assembly of an ultrasonic aluminum strip welding machine, comprising a mounting bracket and a splitting knife and a transducer arranged on the mounting bracket, the transducer is connected to the splitting knife, and also comprises a clamping assembly and a driving assembly respectively mounted on the mounting bracket, the driving assembly is used to drive the clamping assembly to clamp the aluminum strip, the clamping assembly comprises a first clamping arm and a second clamping arm respectively mounted on the mounting bracket, the first clamping arm comprises a driving part, an elastic part and a clamping part connected in sequence from top to bottom, the driving part is used to be connected to the driving assembly, the elastic part is connected to the mounting bracket, and a clamping gap for clamping the aluminum strip is formed between the clamping part and the second clamping part.

[0006] The beneficial effects of the present invention are that the welding head assembly of the ultrasonic aluminum strip pressure welding machine provided by the present invention has the characteristics of high production yield. The driving assembly presses the driving part, thereby causing the elastic part to deform, and then the clamping part moves closer to the second clamping arm, reducing the size of the clamping gap to clamp the aluminum strip, and reducing the risk of the aluminum strip being offset or the tape travel being changed due to the pulling force when the chopping knife is retracted. The structure is simple and the linkage is strong, which is conducive to improving the equipment utilization rate and production yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a structural schematic diagram of the welding head assembly of the ultrasonic aluminum strip press welder according to the first embodiment of the present invention (with the strip cutting mechanism hidden);

[0008] Figure 2 Schematic diagram of a partial cross-section structure of a welding head assembly of an ultrasonic aluminum strip welding machine according to a first embodiment of the present invention;

[0009] Figure 3 for Figure 2 Detailed view of point A in the middle;

[0010] Figure 4 This is a schematic diagram of the partial structure of the welding head assembly of the ultrasonic aluminum strip welding machine according to the first embodiment of the present invention (with the cutter hidden).

[0011] Description of labels:

[0012] 1. Mounting bracket; 11. Light source assembly; 2. Transducer; 3. Chopping knife; 4. First clamping arm; 41. Driving part; 42. Elastic part; 43. Clamping part; 431. Belt slot; 5. Second clamping arm; 51. Adjusting member; 6. Driving assembly; 61. Articulated base; 62. Driving arm; 63. Driving motor; 7. Knife holder; 8. Fixed bracket; 9. Cutter. DETAILED DESCRIPTION

[0013] To illustrate the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and accompanying drawings.

[0014] Please refer to Figures 1 to 4, a welding head assembly of an ultrasonic aluminum strip welding machine, including a mounting bracket 1 and a splitting knife 3 and a transducer 2 arranged on the mounting bracket 1, the transducer 2 is connected to the splitting knife 3, and also includes a clamping assembly and a driving assembly 6 respectively mounted on the mounting bracket 1, the driving assembly 6 is used to drive the clamping assembly to clamp the aluminum strip, the clamping assembly includes a first clamping arm 4 and a second clamping arm 5 respectively mounted on the mounting bracket 1, the first clamping arm 4 includes a driving part 41, an elastic part 42 and a clamping part 43 connected in sequence from top to bottom, the driving part 41 is used to be connected to the driving assembly 6, the elastic part 42 is connected to the mounting bracket 1, and a clamping gap for clamping the aluminum strip is formed between the clamping part 43 and the second clamping part 43.

[0015] As can be seen from the above description, the beneficial effects of the present invention are as follows: the driving component 6 presses the driving portion 41, thereby causing the elastic portion 42 to deform, thereby causing the clamping portion 43 to move closer to the second clamping arm 5, thereby reducing the size of the clamping gap to clamp the aluminum strip, and reducing the risk of the aluminum strip being displaced or the strip travel being changed due to the pulling force when the riving knife 3 is retracted. The structure is simple and the linkage is strong, which is conducive to improving the equipment utilization rate and production yield.

[0016] Furthermore, the driving assembly 6 includes a hinged base 61 and a driving arm 62, the hinged base 61 is installed on the mounting bracket 1, one end of the driving arm 62 is hinged to the hinged base 61, and the other end is connected to the driving part 41; the hinged base 61 is provided with a driving motor 63 connected to the driving arm 62.

[0017] It can be seen from the above description that the driving assembly 6 has a simple structure and is easy to install.

[0018] Furthermore, the clamping portion 43 is provided with a tape passing groove 431 for accommodating the aluminum tape.

[0019] As can be seen from the above description, the belt-passing groove 431 is convenient for evading the aluminum belt, thereby ensuring smooth transportation of the aluminum belt.

[0020] Furthermore, the mounting bracket 1 is provided with an adjusting member 51 connected to the second clamping arm 5 , and the adjusting member 51 is used to adjust the distance between the second clamping arm 5 and the riving knife 3 .

[0021] As can be seen from the above description, the adjusting member 51 facilitates adjustment of the distance between the second clamping arm 5 and the riving knife 3 , thereby improving applicability.

[0022] Furthermore, it also includes a belt cutting mechanism, which includes a connected fixed bracket 8, a knife holder 7 and a cutter 9, the fixed bracket 8 is connected to the mounting bracket 1, the cutter 9 is located outside the riving knife 3, and the bottom of the cutter 9 is higher than the bottom of the riving knife 3.

[0023] It can be seen from the above description that the strip cutting mechanism is convenient for cutting the aluminum strip.

[0024] Furthermore, the fixed bracket 8 includes an L-shaped connecting bracket, a locking piece and an elastic connecting piece, wherein the elastic connecting piece connects the tool holder 7 and the L-shaped connecting bracket; a height adjustment groove is provided on the L-shaped connecting bracket, and the locking piece is arranged in the height adjustment groove and connected to the mounting bracket 1.

[0025] Furthermore, a light source assembly 11 is provided on the mounting bracket 1 .

[0026] Example 1

[0027] Please refer to Figures 1 to 4 , embodiment 1 of the present invention is: a welding head assembly of an ultrasonic aluminum strip press welding machine, comprising a mounting bracket 1 and a splitting knife 3 and a transducer 2 arranged on the mounting bracket 1, the transducer 2 being connected to the splitting knife 3, and further comprising a clamping assembly, a driving assembly 6 and a light source assembly 11 respectively mounted on the mounting bracket 1, the light source assembly 11 being used for lighting, the driving assembly 6 being used to drive the clamping assembly to clamp the aluminum strip, the clamping assembly comprising a first clamping arm 4 and a second clamping arm 5 respectively mounted on the mounting bracket 1, the first clamping arm 4 comprising a driving portion 41, an elastic portion 42 and The clamping part 43, the driving part 41 is used to be connected to the driving assembly 6, and the elastic part 42 is connected to the mounting bracket 1. A clamping gap for clamping the aluminum strip is formed between the clamping part 43 and the second clamping part 43. The driving assembly 6 presses the driving part 41, thereby causing the elastic part 42 to deform, and then causing the clamping part 43 to move closer to the second clamping arm 5, thereby reducing the size of the clamping gap to clamp the aluminum strip, reducing the risk of the aluminum strip being offset or the tape travel being changed due to the pulling force when the riving knife 3 is retracted. The structure is simple and the linkage is strong, which is conducive to improving the equipment utilization rate and production yield.

[0028] Preferably, the driving assembly 6 includes a hinged base 61 and a driving arm 62, the hinged base 61 is installed on the mounting bracket 1, one end of the driving arm 62 is hinged to the hinged base 61, and the other end is connected to the driving part 41; the hinged base 61 is provided with a driving motor 63 connected to the driving arm 62.

[0029] In this embodiment, the clamping portion 43 is provided with a belt-passing groove 431 for accommodating the aluminum strip, and the belt-passing groove 431 is convenient for avoiding the aluminum strip, thereby ensuring the smooth transportation of the aluminum strip; specifically, the mounting bracket 1 is provided with an adjusting member 51 connected to the second clamping arm 5, and the adjusting member 51 is used to adjust the distance between the second clamping arm 5 and the riving knife 3. The adjusting member 51 facilitates the adjustment of the distance between the second clamping arm 5 and the riving knife 3, thereby improving the applicability. An elastic slot is provided on the adjusting member 51, and the distance between the second clamping arm 5 and the riving knife 3 is adjusted by adjusting the size of the elastic slot.

[0030] Preferably, please combine Figure 3 and Figure 4 The welding head assembly of the ultrasonic aluminum strip welding machine also includes a strip cutting mechanism, which includes a connected fixed bracket 8, a knife holder 7 and a cutter 9, the fixed bracket 8 is connected to the mounting bracket 1, the cutter 9 is located outside the chopping knife 3, and the bottom of the cutter 9 is higher than the bottom of the chopping knife 3; specifically, the fixed bracket 8 includes an L-shaped connecting bracket, a locking member and an elastic connecting member, the elastic connecting member connects the knife holder 7 and the L-shaped connecting bracket; the L-shaped connecting bracket is provided with a height adjustment slot, the locking member is arranged in the height adjustment slot and is connected to the mounting bracket 1, and the height of the L-shaped connecting bracket can be adjusted by adjusting the position of the locking member in the height adjustment slot. In detail, the locking member is a locking bolt, and the locking bolt is threadedly connected to the mounting bracket 1.

[0031] In summary, the welding head assembly of the ultrasonic aluminum strip welding machine provided by the present invention has the characteristics of high production yield. The driving assembly presses the driving part, thereby causing the elastic part to deform, and then the clamping part moves closer to the second clamping arm, thereby reducing the size of the clamping gap to clamp the aluminum strip, and reducing the risk of the aluminum strip being displaced or the tape travel being changed due to the pulling force when the chopping knife is retracted. The structure is simple and the linkage is strong, which is conducive to improving the equipment utilization rate and production yield.

[0032] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A welding head assembly of an ultrasonic aluminum strip welding machine, comprising a mounting bracket, a splitting knife and a transducer provided on the mounting bracket, wherein the transducer is connected to the splitting knife, and is characterized in that: The clamping assembly further comprises a clamping assembly and a driving assembly respectively mounted on the mounting bracket, the driving assembly being used to drive the clamping assembly to clamp the aluminum strip, the clamping assembly comprising a first clamping arm and a second clamping arm respectively mounted on the mounting bracket, the first clamping arm comprising a driving portion, an elastic portion and a clamping portion sequentially connected from top to bottom, the driving portion being used to be connected to the driving assembly, the elastic portion being connected to the mounting bracket, and a clamping gap for clamping the aluminum strip being formed between the clamping portion and the second clamping arm; the mounting bracket is provided with an adjusting member connected to the second clamping arm, the adjusting member being provided with an elastic slot, and the spacing of the second clamping arm relative to the chopping knife is adjusted by adjusting the size of the elastic slot.

2. The welding head assembly of the ultrasonic aluminum strip welding machine according to claim 1, characterized in that: The driving assembly includes an articulated base and a driving arm. The articulated base is installed on the mounting bracket. One end of the driving arm is hinged to the articulated base, and the other end is connected to the driving part. A driving motor connected to the driving arm is provided on the articulated base.

3. The welding head assembly of the ultrasonic aluminum strip welding machine according to claim 1, characterized in that: The clamping portion is provided with a belt-passing groove for accommodating the aluminum belt.

4. The welding head assembly of the ultrasonic aluminum strip welding machine according to claim 1, characterized in that: It also includes a belt cutting mechanism, which includes a connected fixed bracket, a knife holder and a cutter. The fixed bracket is connected to the mounting bracket. The cutter is located outside the riving knife, and the bottom of the cutter is higher than the bottom of the riving knife.

5. The welding head assembly of the ultrasonic aluminum strip welding machine according to claim 4, characterized in that: The fixing bracket includes an L-shaped connecting bracket, a locking piece and an elastic connecting piece, the elastic connecting piece connects the tool holder and the L-shaped connecting bracket; the L-shaped connecting bracket is provided with a height adjustment slot, the locking piece is arranged in the height adjustment slot and connected to the mounting bracket.

6. The welding head assembly of the ultrasonic aluminum strip welding machine according to claim 1, characterized in that: The mounting bracket is also provided with a light source assembly.

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