A welding head assembly of a high-stability ultrasonic aluminum wire pressure welding machine

Abstract

The present invention relates to the technical field of ultrasonic welding, and in particular to a welding head assembly of a high-stability ultrasonic aluminum wire pressure welding machine. The welding head assembly of the high-stability ultrasonic aluminum wire pressure welding machine includes a frame, and a splitter, a cutter, a wire release mechanism and a flattening mechanism are arranged on the frame. The splitter is configured to vibrate at a preset frequency to weld the welding wire to the welded object; the cutter is configured to cut the welding wire; the wire release mechanism is configured to release the welding wire along a preset path; and the flattening mechanism is configured to flatten the welding section of the welding wire before welding. When in use, the welding section of the welding wire can be flattened in advance by the flattening mechanism, which, on the one hand, helps to increase the contact area between the welding section of the welding wire and the surface of the welded object during welding, which is beneficial to improving the welding quality. On the other hand, the flattening process of the welding section of the welding wire by the splitter can be omitted, avoiding damage to the surface of the welded object, and improving the welding efficiency while improving the production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of ultrasonic welding, in particular to a welding head assembly of a high-stability ultrasonic aluminum wire pressure welding machine. Background Art

[0002] Ultrasonic aluminum wire welding machine is a kind of equipment used for welding the inner leads of semiconductor devices. It is widely used in the inner lead welding of semiconductor devices such as transistors, digital tubes, dot matrix, integrated circuits, hybrid circuits, etc. When in use, it transmits high-frequency vibration waves to the surfaces of two objects to be welded, and under pressure, the surfaces of the two objects rub against each other to form a fusion between the molecular layers.

[0003] In the related technology, for example, Chinese patent CN215238528U discloses a welding head assembly for an ultrasonic aluminum wire welding machine. When the welding head assembly for an ultrasonic aluminum wire welding machine is in use, an adjustment structure for adjusting the distance between the cutter and the splitting knife is set on a fixed bracket, so that the cutter can be adjusted to a suitable position to cut the welding wire, thereby reducing the risk of interference due to the small distance between the cutter and the splitting knife and the risk of wire cutting position deviation due to the large distance between the cutter and the splitting knife, which is beneficial to improving the production yield.

[0004] Although the welding head assembly for the ultrasonic aluminum wire welding machine can improve the yield rate of aluminum wire welding to a certain extent, it is found in actual use that when the splitter welds the aluminum wire to the semiconductor, in order to ensure the welding quality, the aluminum wire needs to be flattened on the semiconductor first. During the pressing process of the splitter, excessive pressure can easily cause the aluminum wire to break or damage the welded part, while too little pressure can easily lead to poor contact between the aluminum wire and the welded part, which affects both the welding quality and the production efficiency. Summary of the invention

[0005] Based on this, it is necessary to provide a welding head assembly of a high-stability ultrasonic aluminum wire pressure welding machine to address the problem of low production efficiency in the current aluminum wire welding process.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A welding head assembly of a high-stability ultrasonic aluminum wire welding machine, the welding head assembly of the high-stability ultrasonic aluminum wire welding machine includes a frame, and the frame is provided with a splitting knife, a cutting knife, a wire releasing mechanism and a flattening mechanism. The splitting knife is configured to vibrate at a preset frequency to weld the welding wire to the welded workpiece; the cutting knife is configured to cut the welding wire; the wire releasing mechanism is configured to release the welding wire along a preset path; the flattening mechanism is configured to flatten the welding section of the welding wire before welding.

[0008] Furthermore, the flattening mechanism includes a driving unit, a first pressure roller and a second pressure roller, the first pressure roller and the second pressure roller are respectively arranged on both sides of the welding wire and can rotate around their own axes, the first pressure roller can move in a direction close to the second pressure roller, and has a corresponding first position and second position before and after the movement, when in the first position, the distance between the first pressure roller and the second pressure roller is equal to the diameter of the welding wire, and when in the second position, the distance between the first pressure roller and the second pressure roller is smaller than the diameter of the welding wire; the driving unit is configured to provide a driving force for the movement of the first pressure roller.

[0009] Furthermore, the driving part includes a guide frame, which can slide up and down in the vertical direction; a first sliding hole and a second sliding hole are opened on the guide frame, and the end of the first pressure roller is slidably inserted in the first sliding hole, and the end of the second pressure roller is slidably inserted in the second sliding hole; when the guide frame slides in the vertical direction, the first pressure roller can move towards or away from the second pressure roller under the guidance of the first sliding hole.

[0010] Furthermore, the welding head assembly of the high-stability ultrasonic aluminum wire pressure welding machine also includes an extrusion mechanism, and the extrusion mechanism is configured to be able to extrude the welding section of the welding wire before cutting the wire.

[0011] Furthermore, the extrusion mechanism includes a concave block and a convex block, and the concave block and the convex block are respectively arranged on both sides of the welding wire, the concave surface of the concave block and the convex surface of the convex block are arranged opposite to each other and both face the welding wire; the concave block and the convex block can move in a direction close to each other to squeeze the welding wire.

[0012] Furthermore, a third sliding hole and a fourth sliding hole are provided on the guide frame, and the end of the concave block is slidably inserted in the third sliding hole, and the end of the convex block is slidably inserted in the fourth sliding hole; when the guide frame slides in the vertical direction, the concave block can move toward or away from the convex block under the guidance of the third sliding hole, and the convex block can move toward or away from the concave block under the guidance of the fourth sliding hole.

[0013] Furthermore, the concave block is located on the upper side of the welding wire.

[0014] Furthermore, the driving portion further includes a driving member, and the driving member is configured to provide a driving force for the guide frame to slide in a vertical direction.

[0015] Furthermore, the cutting knife is located on a side of the splitting knife away from the fixed end of the welding wire.

[0016] Furthermore, the welding wire comprises aluminum wire.

[0017] The beneficial effects of the present invention are:

[0018] When the welding head assembly of a high-stability ultrasonic aluminum wire welding machine provided by the present invention is used, the welding wire is first released along a preset path by a wire release mechanism, and then the welding section of the welding wire is flattened by a flattening mechanism. Then, the chopper vibrates at a preset frequency to weld the welding wire to a workpiece, and then the process of releasing the wire by the wire release mechanism, flattening by the flattening mechanism, and welding by the chopper is repeated until the end of the welding wire is flattened by the flattening mechanism, and finally the end of the welding wire is cut off by the cutter. The method of flattening the welding section of the welding wire in advance by the flattening mechanism helps to increase the contact area between the welding section of the welding wire and the surface of the workpiece during welding, which is beneficial to improving the welding quality. On the other hand, the process of flattening the welding section of the welding wire by the chopper can be omitted, thereby avoiding damage to the surface of the workpiece, thereby improving the welding efficiency and the production efficiency.

[0019] Furthermore, by providing an extrusion mechanism, the welding section of the welding wire can be squeezed in advance when in use, so that the strength of the welding section of the welding wire is weakened. When the subsequent cutter is pressed down, on the one hand, the welding section of the welding wire can be broken more easily, thereby improving the working efficiency. On the other hand, the pressure of the cutter on the surface of the welded part can be reduced, thereby avoiding damage to the welded part.

[0020] Furthermore, by arranging the concave block on the upper side of the welding wire, when in use, the squeezed portion of the welding section of the welding wire is located on the side away from the welded workpiece, so that when the squeezed portion of the welding section of the welding wire moves below the splitting knife, the squeezed portion of the welding section of the welding wire can bend once in the direction close to the welded workpiece under the push of the splitting knife, which helps to further reduce the strength of the welding section of the welding wire. When the squeezed portion of the welding section of the welding wire moves below the cutting knife, the welding section of the welding wire can be more easily broken during the subsequent downward pressure of the cutting knife, thereby further improving the operating efficiency and reducing the wear of the cutting knife.

[0021] Furthermore, by arranging the cutter on the side of the splitting knife away from the fixed end of the welding wire, the end of the welding wire cut by the cutter is located below the splitting knife during use, avoiding shutdown caused by deviation of the welding wire position and ensuring production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a welding head assembly of a high-stability ultrasonic aluminum wire pressure welding machine provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the three-dimensional structure of a welding head assembly of a high-stability ultrasonic aluminum wire pressure welding machine without a frame provided by an embodiment of the present invention;

[0024] Figure 3A partial cross-sectional structural schematic diagram of a welding head assembly of a high-stability ultrasonic aluminum wire pressure welding machine without a frame provided by an embodiment of the present invention;

[0025] Figure 4 for Figure 3 A schematic diagram of the partially enlarged structure at center A;

[0026] Figure 5 A schematic diagram of the three-dimensional structure of a guide frame of a welding head assembly of a high-stability ultrasonic aluminum wire pressure welding machine provided by an embodiment of the present invention;

[0027] Figure 6 A schematic diagram of the three-dimensional structure of the guide frame, the first pressing roller, the second pressing roller, the concave block and the convex block of the welding head assembly of the high-stability ultrasonic aluminum wire pressure welding machine provided by one embodiment of the present invention when assembled;

[0028] Figure 7 A first state diagram of a welding head assembly of a high-stability ultrasonic aluminum wire pressure welding machine provided by an embodiment of the present invention;

[0029] Figure 8 for Figure 7 A schematic cross-sectional structure diagram of;

[0030] Fig. 9 A second state diagram of a welding head assembly of a high-stability ultrasonic aluminum wire pressure welding machine provided by an embodiment of the present invention;

[0031] Fig.10 for Fig. 9 A schematic cross-sectional structure diagram of ;

[0032] Fig.11 A third state diagram of a welding head assembly of a high-stability ultrasonic aluminum wire pressure welding machine provided by an embodiment of the present invention;

[0033] Fig.12 for Fig.11 A schematic cross-sectional structure diagram of ;

[0034] Fig.13 A fourth state diagram of a welding head assembly of a high-stability ultrasonic aluminum wire pressure welding machine provided by an embodiment of the present invention;

[0035] Fig.14 for Fig.13 Schematic diagram of the cross-sectional structure.

[0036] in:

[0037] 1. Frame;

[0038] 2. Chopping knife;

[0039] 3. Cutter;

[0040] 4. Wire releasing mechanism; 41. Wire storage drum; 42. Vertical wire guide rack; 43. Oblique wire guide rack;

[0041] 5. Flattening mechanism; 51. First pressing roller; 52. Second pressing roller; 53. Guide frame; 531. First sliding hole; 532. Second sliding hole; 533. Third sliding hole; 534. Fourth sliding hole;

[0042] 6. Extrusion mechanism; 61. Concave block; 62. Convex block;

[0043] 7. Installation box; 71. Installation seat; 711. Fifth sliding hole;

[0044] 8. Welding wire; 81. Welding section. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0046] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned herein, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0047] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] like Figures 1 to 14As shown, the welding head assembly of the high-stability ultrasonic aluminum wire welding machine provided by an embodiment of the present invention is used to weld the welding wire 8 to the workpiece, and is configured to include a frame 1, on which are provided a splitting knife 2, a cutting knife 3, a wire releasing mechanism 4 and a flattening mechanism 5. The splitting knife 2 is configured to vibrate at a preset frequency to weld the welding wire 8 to the workpiece; the cutting knife 3 is configured to cut the welding wire 8; the wire releasing mechanism 4 is configured to release the welding wire 8 along a preset path; and the flattening mechanism 5 is configured to flatten the welding section 81 of the welding wire 8 before welding.

[0049] Specifically in this embodiment, Figure 2 As shown, the wire-releasing mechanism 4 is arranged on the right side of the splitting knife 2. In order to provide driving force for the movement of the cutter 3 and the splitting knife 2, the welding head assembly of the high-stability ultrasonic aluminum wire welding machine is arranged to also include an installation box 7. The installation box 7 is arranged on the frame 1. The cutter 3, the splitting knife 2 and the wire-releasing mechanism 4 are all installed at the bottom of the installation box 7. An ultrasonic transducer and a first driving cylinder are inserted inside the installation box 7, wherein the ultrasonic transducer is connected to the splitting knife 2 and is used to provide a driving force for the splitting knife 2 to vibrate at a preset frequency. The output shaft of the first driving cylinder is extended downward in the vertical direction and is fixedly connected to the cutter 3 to drive the cutter 3 to move in the vertical direction.

[0050] It can be understood that the first driving cylinder can be configured as any one of a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.

[0051] The cutter 3 can be arranged between the riving knife 2 and the wire releasing mechanism 4 .

[0052] The wire releasing mechanism 4 is configured to include a wire storage drum 41, a vertical wire guide rack 42 and an inclined wire guide rack 43. Figure 2 As shown, the wire storage barrel 41 is horizontally arranged at the bottom of the installation box 7, and a rotating roller (not shown) is coaxially inserted inside the wire storage barrel 41, which can rotate on its own and has the welding wire 8 wound thereon; the vertical wire guide frame 42 is arranged as a tubular structure, and is arranged to be vertically arranged at the bottom of the wire storage barrel 41 during installation, and the top end of the vertical wire guide frame 42 is vertically and fixedly connected to the outer peripheral wall of the wire storage barrel 41, and is communicated with the wire storage barrel 41, and the bottom end is communicated with the inclined wire guide frame 43; Figure 3 As shown, a first guide hole (not shown) is provided on the inclined wire guide frame 43, and the first guide hole is obliquely extended in the lower left direction. A mounting seat 71 is fixedly provided at the bottom of the mounting box 7, and the mounting seat 71 is arranged between the splitting knife 2 and the wire release mechanism 4, and a second guide hole (not shown) is provided on the mounting seat 71, and the second guide hole is obliquely extended in the lower left direction, and coincides with the extension trajectory of the first guide hole; when in use, the fixed end of the welding wire 8 is set on the rotating roller, and the release end first passes through the vertical wire guide frame 42, and then passes through the first guide hole and the second guide hole in sequence, and is suspended below the splitting knife 2.

[0053] It can be understood that in order to facilitate the provision of driving force for the rotation of the rotating roller, the welding head assembly of the high-stability ultrasonic aluminum wire welding machine is configured to also include a driving motor, which is fixedly mounted on the wire storage barrel 41. The motor shaft of the driving motor is coaxially and fixedly connected to the rotating roller to drive the rotating roller to rotate.

[0054] When in use, first start the driving motor, the driving motor drives the rotating roller to rotate, and the rotating roller rotates to drive the welding wire 8 to pass through the wire storage tube 41, the vertical wire guide rack 42, the inclined wire guide rack 43, and the mounting seat 71 in sequence, and is gradually released; in the process of the welding wire 8 being released, the welding section 81 of the welding wire 8 is flattened by the flattening mechanism 5, and when the welding section 81 of the welding wire 8 moves to the bottom of the splitting knife 2, the ultrasonic transducer is started, so that the splitting knife 2 vibrates at a preset frequency to weld the welding wire 8 to the workpiece, and then the wire releasing mechanism 4 releases the wire, the flattening mechanism 5 flattens, and the splitting knife 2 welds. The process continues until the end of the welding wire 8 is flattened by the flattening mechanism 5, and finally the first driving cylinder is started, which drives the cutter 3 to move downward in the vertical direction and cuts off the end of the welding wire 8; the method of flattening the welding section 81 of the welding wire 8 in advance by the flattening mechanism 5, on the one hand, helps to increase the contact area between the welding section 81 of the welding wire 8 and the surface of the welded workpiece during welding, which is beneficial to improving the welding quality; on the other hand, the process of flattening the welding section 81 of the welding wire 8 by the splitting knife 2 can be omitted, thereby avoiding damage to the surface of the welded workpiece, and improving the welding efficiency while improving the production efficiency.

[0055] In some embodiments, the flattening mechanism 5 is configured to include a driving unit, a first pressure roller 51 and a second pressure roller 52. The first pressure roller 51 and the second pressure roller 52 are respectively arranged on both sides of the welding wire 8, and both can rotate around their own axes. The first pressure roller 51 can move toward the direction close to the second pressure roller 52, and has a corresponding first position and a second position before and after the movement. When in the first position, the distance between the first pressure roller 51 and the second pressure roller 52 is equal to the diameter of the welding wire 8. When in the second position, the distance between the first pressure roller 51 and the second pressure roller 52 is smaller than the diameter of the welding wire 8. The driving unit is configured to provide a driving force for the movement of the first pressure roller 51.

[0056] Specifically in this embodiment, Figure 4 As shown, the first pressing roller 51 and the second pressing roller 52 are both horizontally inserted inside the mounting seat 71, and the axes of the first pressing roller 51 and the second pressing roller 52 are arranged in parallel, wherein the first pressing roller 51 is arranged on the lower right side of the welding wire 8, and the second pressing roller 52 is arranged on the upper left side of the welding wire 8, and the vertical line between the axis of the first pressing roller 51 and the axis of the second pressing roller 52 is arranged to be perpendicular to the axis of the second guide hole, so as to ensure that the plane where the welding wire 8 is pressed out can be parallel to the surface of the workpiece to be welded, thereby ensuring good contact between the welding wire 8 and the surface of the workpiece to be welded, and ensuring the welding quality.

[0057] During the process of gradually feeding out the welding wire 8, when the initial end of the welding section 81 of the welding wire 8 moves between the first pressing roller 51 and the second pressing roller 52, the driving part drives the first pressing roller 51 to move towards the second pressing roller 52, so as to move from the first position to the second position. Under the extrusion of the first pressing roller 51 and the second pressing roller 52, the welding section 81 of the welding wire 8 is gradually flattened.

[0058] In a further embodiment, the driving part can be set to include a guiding frame 53, and the guiding frame 53 can slide up and down along the vertical direction; a first sliding hole 531 and a second sliding hole 532 are formed in the guiding frame 53. The end of the first pressing roller 51 is slidably inserted into the first sliding hole 531, and the end of the second pressing roller 52 is slidably inserted into the second sliding hole 532; when the guiding frame 53 slides along the vertical direction, the first pressing roller 51 can move towards or away from the second pressing roller 52 under the guidance of the first sliding hole 531.

[0059] Specifically in this embodiment, as Figure 2 shown, the guiding frame 53 is arranged vertically during installation, and the top end is inserted into the mounting seat 71, and the bottom end is suspended; as Figure 5 shown, the guiding frame 53 is arranged in a "C" - shaped structure, and is arranged with the opening facing downwards during use. The first sliding hole 531 and the second sliding hole 532 are both formed in the two suspended ends of the guiding frame 53. As Figure 7 shown, the first sliding hole 531 is located at the lower right of the second sliding hole 532, and the first sliding hole 531 is arranged in a V - shaped structure and has a first inclined section and a first vertical section. The first inclined section extends obliquely in the lower left direction, the first vertical section extends in the vertical direction, and the first inclined section is located above the first vertical section. The second sliding hole 532 is arranged in a vertical "one" - shaped structure.

[0060] The first pressing roller 51 is arranged such that one end can be slidably inserted into the first sliding hole 531 on one side of the mounting frame, and the other end can be slidably inserted into the first sliding hole 531 on the other side of the mounting frame. The second pressing roller 52 is arranged such that one end can be slidably inserted into the second sliding hole 532 on one side of the mounting frame, and the other end can be slidably inserted into the second sliding hole 532 on the other side of the mounting frame.

[0061] More specifically, in order to enable the first pressing roller 51 to move towards or away from the second pressing roller 52 under the guidance of the first sliding hole 531, a fifth sliding hole 711 is formed inside the mounting seat 71. As Fig.13 shown, the fifth sliding hole 711 extends obliquely in the upper left direction and is arranged parallel to the perpendicular connection line between the axes of the first pressing roller 51 and the second pressing roller 52; the first pressing roller 51 is arranged such that both ends are simultaneously slidably inserted into the fifth sliding hole 711.

[0062] Initially, if Fig.13 As shown, the first pressing roller 51 is located at the top of the first sliding hole 531, and the second pressing roller 52 is located at the top of the second sliding hole 532; Fig.14 As shown, at this time, the first pressing roller 51 is located at the first position, and the distance between the first pressing roller 51 and the second pressing roller 52 is equal to the diameter of the welding wire 8.

[0063] When in use, the guide frame 53 is driven by external force to move upward in the vertical direction. Figure 7 As shown, since the first inclined section extends along the lower left direction and the first pressing roller 51 first moves along the first inclined section, the first pressing roller 51 can move horizontally to the left at the same time under the guidance of the first inclined section, and since the fifth sliding hole 711 extends along the upper left direction, the first pressing roller 51 can move upward along the fifth sliding hole 711 at the same time and move to the inflection point of the first sliding hole 531 and the upper end of the fifth sliding hole 711 at the same time, and the second pressing roller 52 moves relatively to the middle of the second sliding hole 532; Figure 8 As shown, the first pressing roller 51 is in the second position, at which time the distance between the first pressing roller 51 and the second pressing roller 52 is smaller than the diameter of the welding wire 8, so that the welding wire 8 can be flattened.

[0064] In other embodiments, the driving part may also be configured to include a second driving cylinder, which is fixedly mounted on the mounting base 71, and the output shaft of the second driving cylinder is arranged to extend obliquely in the upper left direction, and the axis of the output shaft of the second driving cylinder is perpendicular to the axis of the second guide hole. The output shaft of the second driving cylinder is arranged to be rotatably connected to the end of the first pressure roller 51 during installation, so as to drive the first pressure roller 51 to move in a direction close to the second pressure roller 52 without affecting the self-rotation of the first pressure roller 51.

[0065] It can be understood that the second driving cylinder can be configured as any one of a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.

[0066] In other embodiments, the welding head assembly of the high-stability ultrasonic aluminum wire welding machine is configured to also include an extrusion mechanism 6, and the extrusion mechanism 6 is configured to be able to extrude the welding section 81 of the welding wire 8 before cutting the wire.

[0067] Specifically in this embodiment, Figure 4 As shown, the squeezing mechanism 6 is arranged to be inserted into the mounting seat 71 during installation, and is located at the lower left of the first pressing roller 51 .

[0068] When in use, the welding section 81 of the welding wire 8 can be squeezed in advance by the extrusion mechanism 6, so that the strength of the welding section 81 of the welding wire 8 is weakened. When the subsequent cutter 3 is pressed down, on the one hand, the welding section 81 of the welding wire 8 can be broken more easily, thereby improving the working efficiency. On the other hand, the pressure of the cutter 3 on the surface of the welded workpiece can be reduced, thereby avoiding damage to the welded workpiece.

[0069] In a further embodiment, the extrusion mechanism 6 is configured to include a concave block 61 and a convex block 62, and the concave block 61 and the convex block 62 are respectively arranged on both sides of the welding wire 8, and the concave surface of the concave block 61 and the convex surface of the convex block 62 are arranged opposite to each other and both face the welding wire 8; the concave block 61 and the convex block 62 can both move in a direction close to each other to extrude the welding wire 8.

[0070] Specifically in this embodiment, Figure 4 As shown, the concave block 61 and the convex block 62 are both inserted into the mounting seat 71 during installation, and in order to facilitate the sliding of the concave block 61 and the convex block 62, an inclined first slide groove (not shown) and a second slide groove (not shown) are opened in the mounting seat 71, and the first slide groove and the second slide groove are both vertically connected to the second guide hole. The concave block 61 is set to be slidably inserted in the first slide groove during installation, and the convex block 62 is set to be slidably inserted in the second slide groove during installation.

[0071] When in use, the concave block 61 and the convex block 62 are driven by external force to move toward each other so as to squeeze the welding wire 8 .

[0072] In a further embodiment, in order to facilitate the provision of driving force for the movement of the concave block 61 and the convex block 62, a third sliding hole 533 and a fourth sliding hole 534 are provided on the guide frame 53, and the end of the concave block 61 is slidably inserted in the third sliding hole 533, and the end of the convex block 62 is slidably inserted in the fourth sliding hole 534; when the guide frame 53 slides in the vertical direction, the concave block 61 can move toward or away from the convex block 62 under the guidance of the third sliding hole 533, and the convex block 62 can move toward or away from the concave block 61 under the guidance of the fourth sliding hole 534.

[0073] Specifically in this embodiment, Figure 5 As shown, the third sliding hole 533 and the fourth sliding hole 534 are both opened on the two suspended ends of the guide frame 53; Figure 7 As shown, the fourth sliding hole 534 is arranged directly below the second sliding hole 532 and is located at the lower left of the first sliding hole 531, and the third sliding hole 533 is arranged at the lower left of the first sliding hole 531 and the second sliding hole 532 at the same time, and is located at the upper left of the fourth sliding hole 534, wherein the third sliding hole 533 is arranged in a V-shaped structure and has a second inclined section and a second vertical section, the second inclined section is arranged to extend obliquely along the lower right direction, the second vertical section is arranged to extend in the vertical direction, and the second vertical section is arranged to be located above the second inclined section; the fourth sliding hole 534 is arranged in a V-shaped structure and has a third inclined section and a third vertical section, the third inclined section is arranged to extend obliquely along the lower left direction, the third vertical section is arranged to extend in the vertical direction, and the third vertical section is arranged to be located above the third inclined section.

[0074] During installation, the concave block 61 is configured so that one end can be slidably inserted into the third sliding hole 533 on one side of the mounting frame, and the other end can be slidably inserted into the third sliding hole 533 on the other side of the mounting frame. During installation, the convex block 62 is configured so that one end can be slidably inserted into the fourth sliding hole 534 on one side of the mounting frame, and the other end can be slidably inserted into the fourth sliding hole 534 on the other side of the mounting frame.

[0075] like Figure 7 As shown, when the welding wire 8 is extruded, the first pressing roller 51 is located at the inflection point of the first sliding hole 531, the second pressing roller 52 is located in the middle of the second sliding hole 532, the concave block 61 is located at the inflection point of the third sliding hole 533, and the convex block 62 is located at the inflection point of the fourth sliding hole 534. Since the concave block 61 first moves along the second vertical section, the concave block 61 will not move in the direction close to the convex block 62. Since the convex block 62 first moves along the third vertical section, the convex block 62 will not move in the direction close to the concave block 61. At this time, the welding wire 8 can be flattened normally by the first pressing roller 51 and the second pressing roller 52, and will not be squeezed by the concave block 61 and the convex block 62.

[0076] Before the welding section 81 of the welding wire 8 is squeezed, the guide frame 53 is continuously driven to move upward in the vertical direction by external force. Fig. 9 As shown, since the first pressing roller 51 moves along the first vertical section, the position of the first pressing roller 51 will not change, and since the second pressing roller 52 moves along the second slide hole 532, the position of the second pressing roller 52 will not change, so that the welding wire 8 can be continuously flattened.

[0077] Since the second inclined section extends in the lower right direction and the concave block 61 moves along the second inclined section at the same time, the concave block 61 can move horizontally to the right at the same time under the guide of the second inclined section. Since the first slide groove extends in the lower right direction, the concave block 61 can move downward along the first slide groove at the same time, that is, move in the direction close to the protrusion 62. Since the third inclined section extends in the lower left direction and the protrusion 62 moves along the third inclined section at the same time, the protrusion 62 can move horizontally to the left at the same time under the guide of the third inclined section. Since the second slide groove extends in the upper left direction, the protrusion 62 can move upward along the second slide groove at the same time, that is, move in the direction close to the concave block 61. Fig.10 As shown, the concave block 61 and the convex block 62 are brought close to each other at the same time to squeeze the welding wire 8 into a U-shaped structure, so that when the cutter 3 is pressed down subsequently, on the one hand, the welding section 81 of the welding wire 8 can be broken more easily, thereby improving the working efficiency; on the other hand, the pressure of the cutter 3 on the surface of the welded workpiece can be reduced, thereby avoiding damage to the welded workpiece.

[0078] In other embodiments, the welding head assembly of the high-stability ultrasonic aluminum wire welding machine can also be configured to include a third driving cylinder and a fourth driving cylinder, both of which are fixedly mounted on the mounting base 71, and the output shaft of the third driving cylinder is arranged to extend obliquely along the lower right direction, and the axis of the output shaft of the third driving cylinder is arranged perpendicularly to the axis of the second guide hole, and the output shaft of the third driving cylinder is arranged to be connected to the end of the recessed block 61 during installation; the output shaft of the fourth driving cylinder is arranged to extend obliquely along the upper left direction, and the axis of the output shaft of the fourth driving cylinder is arranged perpendicularly to the axis of the second guide hole, and the output shaft of the fourth driving cylinder is arranged to be connected to the end of the protrusion 62 during installation.

[0079] It can be understood that the third driving cylinder and the fourth driving cylinder can be configured as any one of a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.

[0080] In other embodiments, in order to further reduce damage to the surface of the welded part, the concave block 61 is arranged to be located on the upper side of the welding wire 8 .

[0081] Specifically in this embodiment, Figure 4 As shown, the concave block 61 is arranged on the upper side of the welding wire 8, and the convex block 62 is arranged on the lower side of the welding wire 8, so that when in use, Fig.12 As shown, the squeezed portion of the welding segment 81 of the welding wire 8 is located on the side away from the welded workpiece, so that when the squeezed portion of the welding segment 81 of the welding wire 8 moves below the splitting knife 2, the squeezed portion of the welding segment 81 of the welding wire 8 can bend toward the welded workpiece under the push of the splitting knife 2, which helps to further reduce the strength of the welding segment 81 of the welding wire 8. When the squeezed portion of the welding segment 81 of the welding wire 8 moves below the cutter 3, the welding segment 81 of the welding wire 8 can be more easily broken during the subsequent downward pressure of the cutter 3, thereby further improving the operating efficiency and reducing the wear of the cutter 3.

[0082] In other embodiments, the driving portion is configured to further include a driving member, and the driving member is configured to provide a driving force for the guide frame 53 to slide in the vertical direction.

[0083] Specifically in this embodiment, the driving member can be set as a fifth driving cylinder. The fifth driving cylinder is set to be inserted into the installation box 7 during installation. The output shaft of the fifth driving cylinder is extended downward in the vertical direction and is fixedly connected to the guide frame 53 to drive the guide frame 53 to move in the vertical direction.

[0084] It can be understood that the fifth driving cylinder can be configured as any one of a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.

[0085] In other embodiments, in order to ensure that the cutting position of the welding wire 8 is always located below the splitting knife 2 , the cutting knife 3 is arranged to be located on the side of the splitting knife 2 away from the fixed end of the welding wire 8 .

[0086] Specifically in this embodiment, Figure 3 As shown, the cutter 3 is arranged on the left side of the splitting knife 2, so that the end of the welding wire 8 cut by the cutter 3 is located below the splitting knife 2 during use, avoiding shutdown caused by deviation of the welding wire 8 position and ensuring production efficiency.

[0087] In other embodiments, the welding wire 8 may be configured to include aluminum wire.

[0088] In other embodiments, the welding wire 8 may also be configured to include a gold wire.

[0089] In combination with the above embodiments, the use principle and working process of the embodiments of the present invention are as follows:

[0090] Initially, if Fig.13 As shown, the first pressing roller 51 is located at the top of the first sliding hole 531, the second pressing roller 52 is located at the top of the second sliding hole 532, the concave block 61 is located at the top of the third sliding hole 533, and the convex block 62 is located at the top of the fourth sliding hole 534; Fig.14 As shown, at this time, the first pressing roller 51 is located at the first position, and the distance between the first pressing roller 51 and the second pressing roller 52 is equal to the diameter of the welding wire 8, and the concave block 61 and the convex block 62 are located away from each other.

[0091] When in use, first start the driving motor, the driving motor drives the rotating roller to rotate, and the rotating roller rotates to drive the welding wire 8 to pass through the wire storage drum 41, the vertical wire guide frame 42, the inclined wire guide frame 43, and the mounting seat 71 in sequence, and is gradually released.

[0092] During the process of releasing the welding wire 8, when the initial end of the welding section 81 of the welding wire 8 moves to between the first pressing roller 51 and the second pressing roller 52, the fifth driving cylinder is started, and the fifth driving cylinder drives the guide frame 53 to move upward in the vertical direction. Figure 7 As shown, during the movement of the guide frame 53, the first pressing roller 51 is guided by the first sliding hole 531 and the fifth sliding hole 711 to simultaneously move to the inflection point of the first sliding hole 531 and the upper end of the fifth sliding hole 711, and moves from the first position to the second position, and the second pressing roller 52 is relatively moved to the middle of the second sliding hole 532, and the positions of the concave block 61 and the convex block 62 remain unchanged; Figure 8 As shown, the first pressing roller 51 is in the second position, at which time the distance between the first pressing roller 51 and the second pressing roller 52 is smaller than the diameter of the welding wire 8, so that the welding wire 8 can be flattened.

[0093] When the welding section 81 of the welding wire 8 moves to below the splitting knife 2, the ultrasonic transducer is started, so that the splitting knife 2 can vibrate at a preset frequency to weld the welding wire 8 to the welded workpiece, and then the process of the wire feeding mechanism 4 feeding the wire, the flattening mechanism 5 flattening, and the splitting knife 2 welding is repeated until the end of the welding wire 8 is flattened by the flattening mechanism 5; the fifth driving cylinder is started, and the fifth driving cylinder continues to drive the guide frame 53 to move upward in the vertical direction, such as Fig. 9 As shown, the concave block 61 moves toward the direction close to the protrusion 62 under the common guidance of the third sliding hole 533 and the first sliding groove, and the protrusion 62 moves toward the direction close to the concave block 61 under the common guidance of the fourth sliding hole 534 and the second sliding groove; Fig.10 As shown, the concave block 61 and the convex block 62 approach each other simultaneously, so as to squeeze the welding wire 8 into an inverted U-shaped structure.

[0094] As the welding wire 8 is continuously released, Fig.11 As shown, when the inverted U-shaped structure of the welding wire 8 moves below the splitting knife 2, the squeezed part of the welding section 81 of the welding wire 8 can bend once in the direction close to the welded workpiece under the push of the splitting knife 2; when the inverted U-shaped structure of the welding wire 8 moves below the cutting knife 3, the first driving cylinder is started, and the first driving cylinder drives the cutting knife 3 to move downward in the vertical direction and cut off the end of the welding wire 8.

[0095] Then the fifth driving cylinder is started, and the fifth driving cylinder drives the guide frame 53 to move downward in the vertical direction to achieve resetting.

[0096] Repeat the above process to complete the welding work.

[0097] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0098] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A welding head assembly of a high-stability ultrasonic aluminum wire pressure welding machine, characterized in that: The welding head assembly of the high-stability ultrasonic aluminum wire pressure welding machine includes a frame, on which a splitter, a cutter, a wire-releasing mechanism and a flattening mechanism are arranged, wherein the splitter is configured to vibrate at a preset frequency to weld the welding wire to the welded workpiece; the cutter is configured to cut the welding wire; the wire-releasing mechanism is configured to release the welding wire along a preset path; and the flattening mechanism is configured to flatten the welding section of the welding wire before welding; The flattening mechanism comprises a driving unit, a first pressing roller and a second pressing roller, wherein the first pressing roller and the second pressing roller are respectively arranged on both sides of the welding wire and are both capable of rotating around their own axes, the first pressing roller is capable of moving toward the second pressing roller and has a corresponding first position and a second position before and after the movement, when in the first position, the distance between the first pressing roller and the second pressing roller is equal to the diameter of the welding wire, and when in the second position, the distance between the first pressing roller and the second pressing roller is smaller than the diameter of the welding wire; the driving unit is configured to provide a driving force for the movement of the first pressing roller; The welding head assembly of the high-stability ultrasonic aluminum wire pressure welding machine also includes an extrusion mechanism, which is configured to be able to extrude the welding section of the welding wire before cutting the wire; The extrusion mechanism includes a concave block and a convex block, and the concave block and the convex block are respectively arranged on both sides of the welding wire, the concave surface of the concave block and the convex surface of the convex block are arranged opposite to each other and both face the welding wire; the concave block and the convex block can both move in a direction close to each other to extrude the welding wire.

2. The welding head assembly of the high stability ultrasonic aluminum wire pressure welding machine according to claim 1 is characterized in that: The driving part includes a guide frame, and the guide frame can slide up and down in the vertical direction; a first sliding hole and a second sliding hole are opened on the guide frame, and the end of the first pressure roller is slidably inserted in the first sliding hole, and the end of the second pressure roller is slidably inserted in the second sliding hole; when the guide frame slides in the vertical direction, the first pressure roller can move towards or away from the second pressure roller under the guidance of the first sliding hole.

3. The welding head assembly of the high stability ultrasonic aluminum wire pressure welding machine according to claim 2 is characterized in that: The guide frame is provided with a third sliding hole and a fourth sliding hole, the end of the concave block is slidably inserted in the third sliding hole, and the end of the convex block is slidably inserted in the fourth sliding hole; when the guide frame slides in the vertical direction, the concave block can move toward or away from the convex block under the guidance of the third sliding hole, and the convex block can move toward or away from the concave block under the guidance of the fourth sliding hole.

4. According to the welding head assembly of the high-stability ultrasonic aluminum wire welding machine according to claim 2, the driving part also includes a driving member, and the driving member is configured to provide a driving force for the guide frame to slide in a vertical direction.

5. The welding head assembly of the high stability ultrasonic aluminum wire pressure welding machine according to claim 1, characterized in that: The concave block is located on the upper side of the welding wire.

6. The welding head assembly of the high stability ultrasonic aluminum wire pressure welding machine according to claim 1, characterized in that: The cutting knife is located at a side of the splitting knife away from the fixed end of the welding wire.

7. The welding head assembly of the high stability ultrasonic aluminum wire pressure welding machine according to claim 1, characterized in that: The welding wire includes aluminum wire.

Images