Double-electrode welding device

Abstract

The utility model discloses a dual-electrode welding device, which comprises a shell, a first electrode and a second electrode, the length adjusting part is arranged in the accommodating cavity and can rotate relative to the accommodating cavity around a first fulcrum by taking a first direction as an axial direction; the first electrode carrier is in contact with one end of the length adjusting part; the second electrode carrier is in contact with the other end of the length adjusting part; one end of the first electrode is arranged in the first electrode carrier and connected with the first electrode carrier, and the other end of the first electrode extends out of the shell; one end of the second electrode is arranged in the second electrode carrier and connected with the second electrode carrier, the other end of the second electrode extends out of the shell, and the moving direction of the second electrode is opposite to that of the first electrode. According to the utility model, the first electrode and the second electrode have automatic adjustment capability, and can dynamically adjust the lengths of the parts outside the shell according to actual working condition requirements. The first electrode and the second electrode are tightly contacted with the workpiece, the welding current is uniform, and the tensile resistance of the workpiece is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of welding electrode, especially a double electrode welding device. BACKGROUND

[0002] In the welding process of the chip and the terminal, the traditional way is to weld two pin feet of the chip and two pin feet of the terminal respectively. When operating the traditional welding electrode device, the upper electrode and the lower electrode are first welded with one group of pin feet of the chip and the terminal, then the electrodes are removed, and then the electrodes are moved to the other group of pin feet of the chip and the terminal for welding again. The whole process is relatively complicated.

[0003] To solve this problem, the technical personnel designed a double electrode welding device. However, the electrodes of the device cannot achieve pressure balance self-correction. Due to the error in the processing of the chip and the terminal, it cannot be ensured that the thickness of the product is completely consistent every time, which leads to the situation that one electrode closely fits with one group of pin feet while the other electrode fails to fit with the other group of pin feet during welding. In this way, the pre-pressing pressure of the electrodes on the pin feet is unbalanced, which further causes welding current shunting, and finally leads to poor welding effect, unqualified welding pull-off force of the welded part and other failure phenomena. For example, the welding tensile resistance of one group of pin feet may be only 44N, while the qualified welding compression resistance should be greater than or equal to 75N. The welding tensile resistance here refers to the maximum tensile force that the welded joint can withstand when subjected to axial tensile load. It is a key mechanical performance index for measuring the welding quality, which can directly reflect the ability of the welded joint to resist tensile failure. SUMMARY

[0004] The utility model discloses a double electrode welding device, the first electrode and the second electrode have automatic adjustment capacity, can according to actual working condition demand, to the length of the self outside the shell dynamic adjustment. Ensure that the first electrode, the second electrode and the workpiece are in close contact, ensure that the welding current is uniform, improve the tensile resistance of the workpiece.

[0005] To solve the above technical problems, the embodiment of the utility model discloses a double electrode welding device, which comprises:

[0006] A housing comprising a receiving cavity;

[0007] A length adjusting part arranged in the receiving cavity, the length adjusting part can rotate relative to the receiving cavity around a first pivot point in a first direction as an axis;

[0008] a first electrode carrier, which is in contact with one end of the length adjusting part;

[0009] a second electrode carrier, which is in contact with the other end of the length adjusting part, and is arranged in the accommodating cavity in parallel with the first electrode carrier along a second direction perpendicular to the first direction;

[0010] a first electrode, one end of which is arranged in the first electrode carrier and connected with the first electrode carrier, and the other end of which extends out of the shell, the first electrode being capable of being driven by external structural members to move relative to the shell along a third direction perpendicular to the first direction;

[0011] a second electrode, one end of which is arranged in the second electrode carrier and connected with the second electrode carrier, and the other end of which extends out of the shell, the second electrode being capable of being driven by external structural members to move relative to the shell along the third direction, the moving direction of the second electrode being opposite to that of the first electrode.

[0012] Taking a chip and a terminal as examples, due to the complexity and limitation of the process, a certain processing error will inevitably occur in two first pin feet of the chip and two second pin feet of the terminal in the processing link of the chip and the terminal. This error causes the thickness of the first pin feet and the second pin feet to be unable to be guaranteed to be consistent in each production process. One first pin foot of the chip and one second pin foot of the terminal are a first pin foot group, and the other first pin foot of the chip and the other second pin foot of the terminal are a second pin foot group.

[0013] Taking the thickness of the first pin foot group being smaller than that of the second pin foot group as an example, when the second electrode contacts the second pin foot group with a larger thickness, the first electrode fails to contact the first pin foot group with a smaller thickness. In this contact state, the second pin foot group gives the second electrode an upward force due to the interaction force between them. Under the driving action of the force, the second electrode drives the second electrode carrier in contact with it to move upward relative to the shell along the third direction. When the second electrode carrier moves upward, it pushes the length adjusting part to rotate counterclockwise relative to the accommodating cavity about the first fulcrum as the first direction. The rotation of the length adjusting part further drives the first electrode carrier to drive the first electrode to move downward relative to the shell along the third direction. Thus, the first electrode that fails to contact can contact the first pin foot group to successfully weld the first pin foot group and the second pin foot group.

[0014] Similarly, when the thickness of the first group of pin groups is greater than the thickness of the second group of pin groups, the first electrode contacts the first group of pin groups with greater thickness, and at this time the second electrode fails to contact the second group of pin groups with smaller thickness. In this contact state, the first group of pin groups gives the first electrode an upward force due to the interaction force between them. Under the driving action of this force, the first electrode will drive the first electrode carrier in contact with it to start moving upward relative to the shell in the third direction. When the first electrode carrier moves upward, it pushes the length adjusting part to rotate clockwise relative to the accommodating cavity with the first direction as the axis. The rotation of the length adjusting part further drives the second electrode carrier, so that it drives the second electrode to move downward relative to the shell in the third direction. Thus, the second electrode that fails to contact can contact the second group of pin groups, so as to successfully weld the first group of pin groups and the second group of pin groups.

[0015] In summary, the first electrode and the second electrode of the double-electrode welding device in the technical solution have automatic adjustment capability, can dynamically adjust the length of itself located outside the shell according to the actual working condition requirement. Ensure that the first electrode and the first group of pin groups, the second electrode and the second group of pin groups are in close contact, ensure uniform welding current, and improve the tensile strength of the first group of pin groups and the second group of pin groups.

[0016] According to another specific embodiment of the present application, the length adjusting part comprises:

[0017] The first balancing member is arranged in the accommodating cavity, and the first balancing member can rotate relative to the accommodating cavity with the first direction as the axis about the first fulcrum;

[0018] The second balancing member is arranged in the accommodating cavity along the third direction, one end of the second balancing member is in contact with the first balancing member, and the other end of the second balancing member is in contact with the first electrode carrier;

[0019] The third balancing member is arranged in the accommodating cavity along the second direction, the third balancing member and the second balancing member are arranged side by side in the accommodating cavity, the third balancing member and the second balancing member are arranged in a spaced manner, along the third direction, one end of the third balancing member is in contact with the first balancing member, and the other end of the third balancing member is in contact with the second electrode carrier.

[0020] With the technical scheme, taking the thickness of the first group of pin feet as an example, when the second electrode contacts the second group of pin feet with larger thickness, the first electrode fails to contact the first group of pin feet with smaller thickness. In this contact state, the second group of pin feet gives the second electrode an upward force due to the interaction between the pin feet. Under the driving action of the force, the second electrode drives the second electrode carrier in contact therewith to move upward relative to the shell along the third direction. When the second electrode carrier moves upward, the third balancing member in contact therewith is pushed to move upward and rotate counterclockwise relative to the accommodating cavity about the first direction, and at the same time, the first balancing member in contact therewith is pushed to start rotating counterclockwise relative to the accommodating cavity about the first direction. The rotation of the first balancing member drives the second balancing member in contact therewith to move downward and rotate counterclockwise relative to the accommodating cavity about the first direction, and at this time, the second balancing member further drives the first electrode carrier in contact therewith, so that the first electrode carrier drives the first electrode to move downward relative to the shell along the third direction. Thus, the first electrode which fails to contact can contact the first group of pin feet, so as to successfully weld the first group of pin feet and the second group of pin feet.

[0021] Similarly, when the thickness of the first group of pin feet is greater than that of the second group of pin feet, the first electrode contacts the first group of pin feet with larger thickness, and the second electrode fails to contact the second group of pin feet with smaller thickness. In this contact state, the first group of pin feet gives the first electrode an upward force due to the interaction between the pin feet. Under the driving action of the force, the first electrode drives the first electrode carrier in contact therewith to move upward relative to the shell along the third direction. When the first electrode carrier moves upward, the second balancing member in contact therewith is pushed to move upward and rotate clockwise relative to the accommodating cavity about the first direction, and at the same time, the first balancing member in contact therewith is pushed to start rotating clockwise relative to the accommodating cavity about the first direction. The rotation of the first balancing member drives the third balancing member in contact therewith to move downward and rotate clockwise relative to the accommodating cavity about the first direction, and at this time, the third balancing member further drives the second electrode carrier in contact therewith, so that the second electrode carrier drives the second electrode to move downward relative to the shell along the third direction. Thus, the second electrode which fails to contact can contact the second group of pin feet, so as to successfully weld the first group of pin feet and the second group of pin feet.

[0022] According to another specific embodiment of the present application,

[0023] The first balancing member comprises:

[0024] The first flat section is in contact with the second balancing member and the third balancing member.

[0025] a first circular arc, the first circular arc being a convex arc, a center of the first circular arc coinciding with the first fulcrum;

[0026] the accommodating cavity comprises:

[0027] a first arc-shaped section, a shape of the first arc-shaped section being adapted to the first circular arc and being in contact with the first circular arc;

[0028] a vertical section, the vertical section having a first width along the third direction, a diameter of the first circular arc being equal to the first width.

[0029] According to another specific embodiment of the present application,

[0030] the second balancing piece comprises:

[0031] a second flat section, the second flat section being in contact with the first flat section;

[0032] a second circular arc;

[0033] the first electrode carrier comprises:

[0034] a second arc-shaped section, the second circular arc protruding the second arc-shaped section, a part of the second circular arc being in contact with the second arc-shaped section.

[0035] With the above technical solution, if the second circular arc is completely in contact with the second arc-shaped section, when the first electrode carrier pushes the second balancing piece to move upward along the third direction relative to the accommodating cavity, the second balancing piece cannot rotate relative to the accommodating cavity with the first direction as the axis. Correspondingly, the first balancing piece cannot rotate relative to the accommodating cavity with the first direction as the axis, and the third balancing piece cannot move downward along the third direction relative to the accommodating cavity, and the second electrode carrier and the second electrode cannot move downward along the third direction relative to the accommodating cavity, so that the first electrode and the second electrode of the double-electrode welding device lose the automatic adjustment capability.

[0036] According to another specific embodiment of the present application,

[0037] the third balancing piece comprises:

[0038] a third flat section, the third flat section being in contact with the first flat section, a length of the third flat section being less than a sum of lengths of the first flat section and the second flat section;

[0039] a third circular arc;

[0040] the second electrode carrier comprises:

[0041] The third arc segment is in contact with the third arc segment at a portion of the third arc.

[0042] According to the technical scheme, if the third arc is in full contact with the third arc segment, when the second electrode carrier pushes the third balancing piece to move upward relative to the accommodating cavity in the third direction, the third balancing piece cannot rotate relative to the accommodating cavity with the first direction as the axis. Correspondingly, the first balancing piece cannot rotate relative to the accommodating cavity with the first direction as the axis, and the second balancing piece cannot move downward relative to the accommodating cavity in the third direction, and the first electrode carrier and the first electrode cannot move downward relative to the accommodating cavity in the third direction, so that the first electrode and the second electrode of the double-electrode welding device lose the automatic adjustment capability.

[0043] According to another specific embodiment of the utility model, the double-electrode welding device comprises a cover plate, the cover plate is connected with the shell to form the accommodating cavity, and the length adjusting part, the first electrode carrier and the second electrode carrier are defined in the accommodating cavity.

[0044] According to another specific embodiment of the utility model, the shell comprises a connecting piece, and the connecting piece is used to be connected with a welding machine carrier in the external environment.

[0045] According to another specific embodiment of the utility model,

[0046] The first electrode carrier comprises a first top wire, a side wall of the first electrode carrier comprises a first through hole, the first top wire passes through the first through hole and abuts against one end of the first electrode, and the first top wire is used to fix the first electrode.

[0047] The second electrode carrier comprises a second top wire, a side wall of the second electrode carrier comprises a second through hole, the second top wire passes through the second through hole and abuts against one end of the second electrode, and the second top wire is used to fix the second electrode.

[0048] According to another specific embodiment of the utility model, the material of the first electrode is copper alloy, and the material of the second electrode is copper alloy.

[0049] According to another specific embodiment of the utility model, the materials of the shell, the length adjusting part, the first electrode carrier and the second electrode carrier are conductive materials.

[0050] According to the technical scheme, the double-electrode welding device needs to be powered to weld the chip and the terminal by the first electrode and the second electrode, and therefore, the materials of the shell, the length adjusting part, the first electrode carrier and the second electrodes carrier are conductive materials. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 A perspective view of the double-electrode welding device according to an embodiment of the present application is shown. Figure 1 .

[0052] Figure 2 A perspective view of the double-electrode welding device according to an embodiment of the present application is shown. Figure 2 .

[0053] Figure 3A A state diagram of the double-electrode welding device according to an embodiment of the present application is shown. Figure 1 .

[0054] Figure 3B A state diagram of the double-electrode welding device according to an embodiment of the present application is shown. Figure 2 .

[0055] Figure 3C A state diagram of the double-electrode welding device according to an embodiment of the present application is shown.

[0056] Figure 4 A perspective view of the first balancing member according to an embodiment of the present application is shown.

[0057] Figure 5 A perspective view of the second balancing member or the third balancing member according to an embodiment of the present application is shown.

[0058] Figure 6 A perspective view of the first electrode carrier and the first electrode, and the second electrode carrier and the second electrode according to an embodiment of the present application is shown.

[0059] Figure 7 A perspective view of the double-electrode welding device according to an embodiment of the present application is shown.

[0060] Explanation of reference signs

[0061] The double-electrode welding device 100;

[0062] The housing 10;

[0063] The accommodating cavity 11; the first arc-shaped section 111; the vertical section 112;

[0064] The connecting member 12;

[0065] The length adjusting part 20;

[0066] The first balancing member 21; the first straight section 211; the first circular arc 212;

[0067] The second balancing member 22; the second straight section 221; the second circular arc 222;

[0068] The third balancing member 23; the third straight section 231; the third circular arc 232;

[0069] First electrode carrier 30; second arc segment 31; first top wire 32; first through hole 33;

[0070] Second electrode carrier 40; third arc segment 41; second top wire 42; second through hole 43;

[0071] First electrode 50;

[0072] Second electrode 60;

[0073] Cover plate 70;

[0074] First pin 200;

[0075] Second pin 300;

[0076] First group of pins 400;

[0077] Second group of pins 500. DETAILED DESCRIPTION

[0078] The above description merely illustrates the principles of the application. It will thus be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described or shown herein, embody the principles of the application and are thus within its spirit and scope. In addition, it is understood that the application is not limited to the embodiments described herein, but that it includes all embodiments that fall within the scope of the claims.

[0079] It should be noted that in this specification, similar reference numbers and letters in the following drawings represent similar items, thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0080] In the description of the present embodiments, it should be noted that the terms "upper", "lower", "inner", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0081] The terms "first", "second", and the like, are used only to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

[0082] In the description of the embodiments, it should also be noted that unless specifically defined and limited, the terms "set", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments can be understood according to the specific circumstances.

[0083] In order to make the purpose, technical scheme and advantages of the utility model clearer, the embodiments of the utility model will be described in further detail below with reference to the drawings.

[0084] Reference Figures 1 to 3A The embodiments of the present application provide a double electrode welding device 100, which comprises a shell 10, a length adjusting part 20, a first electrode carrier 30, a second electrode carrier 40, a first electrode 50 and a second electrode 60.

[0085] The shell 10 is a cuboid, and the shell 10 comprises a containing cavity 11, and the length adjusting part 20 is arranged in the containing cavity 11, and the length adjusting part 20 can rotate relative to the containing cavity 11 at a first branch point O1 with the first direction X as the axis.

[0086] The first electrode carrier 30 is in contact with one end of the length adjusting part 20, and along the second direction Y, the first electrode carrier 30 and the second electrode carrier 40 are arranged side by side in the containing cavity 11, and the second electrode carrier 40 is in contact with the other end of the length adjusting part 20, and the second direction Y is perpendicular to the first direction X.

[0087] The first electrode 50 is a cuboid, one end of the first electrode 50 is arranged in the first electrode carrier 30 and connected with the first electrode carrier 30. The other end of the first electrode 50 extends out of the shell 10, and the first electrode 50 can be driven by external structural members (for example, a chip (not shown in the figure) and a terminal (not shown in the figure)) to move relative to the shell 10 along the third direction Z. The first electrode 50 is used for welding external chips and terminals, and the third direction Z is perpendicular to the first direction X.

[0088] The second electrode 60 is a cuboid, one end of the second electrode 60 is arranged in the second electrode carrier 40 and connected with the second electrode carrier 40. The other end of the second electrode 60 extends out of the shell 10, and the second electrode 60 can be driven by external structural members (for example, a chip and a terminal) to move relative to the shell 10 along the third direction Z. The moving direction of the second electrode 60 is opposite to that of the first electrode 50, and the second electrode 60 is used for welding external chips and terminals.

[0089] Reference Figure 1 、 Figures 3A to 3C In the process of the chip and the terminal, due to the complexity and limitation of the process, the two first pin feet 200 of the chip and the two second pin feet 300 of the terminal will inevitably produce a certain processing error. This error leads to the fact that the thickness of the first pin feet 200 and the second pin feet 300 cannot be guaranteed to remain consistent in each production process. Among them, one first pin foot 200 of the chip and one second pin foot 300 of the terminal are the first group of pin feet 400, and the other first pin foot 200 of the chip and the other second pin foot 300 of the terminal are the second group of pin feet 500.

[0090] With the above technical solution, taking the thickness of the first group of pin feet 400 being smaller than the thickness of the second group of pin feet 500 as an example, as shown in FIG. 6, when the second electrode 60 contacts the second group of pin feet 500 with larger thickness, at this time the first electrode 50 fails to contact the first group of pin feet 400 with smaller thickness. As shown in FIGS. 7 and 8, in this contact state, the second group of pin feet 500 gives the second electrode 60 an upward force due to the mutual force. Under the driving action of this force, the second electrode 60 will drive the second electrode carrier 40 in contact with it to move upward relative to the shell 10 along the third direction Z (as shown by the direction a of the dashed arrow in FIG. 9). When the second electrode carrier 40 moves upward, it pushes the length adjusting part 20 to rotate counterclockwise relative to the accommodating cavity 11 around the first fulcrum O1 as the axis of the first direction X (as shown by the direction b of the dashed arrow in FIG. 10). The rotation of the length adjusting part 20 further drives the first electrode carrier 30, so that it drives the first electrode 50 to move downward relative to the shell 10 along the third direction Z (as shown by the direction c of the dashed arrow in FIG. 11). Thus, the first electrode 50 that originally fails to contact can contact the first group of pin feet 400, so as to successfully weld the first group of pin feet 400 and the second group of pin feet 500. Figure 3B Figure 1 Figure 3C Figure 3C Figure 3C Figure 3C

[0091] ​​​​​​Similarly, when the thickness of the first group of pin sets 400 is greater than the thickness of the second group of pin sets 500, the first electrode 50 contacts the first group of pin sets 400 with greater thickness, and at this time the second electrode 60 fails to contact the second group of pin sets 500 with smaller thickness. In this contact state, the first group of pin sets 400 gives the first electrode 50 an upward force due to the interaction force between them. Under the driving action of this force, the first electrode 50 will drive the first electrode carrier 30 in contact with it to move upward relative to the shell 10 along the third direction Z. When the first electrode carrier 30 moves upward, it drives the length adjusting part 20 to rotate clockwise relative to the accommodating cavity 11 with the first direction X as the axis. And the rotation of the length adjusting part 20 further drives the second electrode carrier 40, so that it drives the second electrode 60 to move downward relative to the shell 10 along the third direction Z. Thus, the second electrode 60 that fails to contact can contact the second group of pin sets 500, so as to successfully weld the first group of pin sets 400 and the second group of pin sets 500.

[0092] In summary, the first electrode 50 and the second electrode 60 of the double-electrode welding device 100 in the technical solution have automatic adjustment capability, and can dynamically adjust their own length outside the shell 10 according to actual working condition requirements. Ensure that the first electrode 50 and the first group of pin sets 400, and the second electrode 60 and the second group of pin sets 500 are in close contact, ensure uniform welding current, and improve the tensile strength of the first group of pin sets 400 and the second group of pin sets 500.

[0093] It should be noted that the shape of the shell 10 is not specifically limited in the embodiments of the present application, for example, in other possible embodiments, the shape of the shell 10 can be a cylinder, a triangular prism, etc. The shape of the first electrode 50 is not specifically limited in the embodiments of the present application, for example, in other possible embodiments, the shape of the first electrode 50 can be a cylinder, a triangular prism, etc. The shape of the second electrode 60 is not specifically limited in the embodiments of the present application, for example, in other possible embodiments, the shape of the second electrode 60 can be a cylinder, a triangular prism, etc.

[0094] In some possible embodiments, with reference to Figures 3A to 3C The length adjusting part 20 includes a first balancing piece 21, a second balancing piece 22 and a third balancing piece 23 arranged in the accommodating cavity 11. The first balancing piece 21 can rotate relative to the accommodating cavity 11 with the first direction X as the axis around the first fulcrum O1.

[0095] Along the third direction Z, one end of the second balancing piece 22 is in contact with the first balancing piece 21, and the other end of the second balancing piece 22 is in contact with the first electrode carrier 30.

[0096] Along the second direction Y, the third balancing member 23 is arranged in parallel with the second balancing member 22 in the accommodating cavity 11, and the third balancing member 23 is arranged in spaced-apart relation with the second balancing member 22. Along the third direction Z, one end of the third balancing member 23 is in contact with the first balancing member 21, and the other end of the third balancing member 23 is in contact with the second electrode carrier 40.

[0097] With the above technical solution, as shown in the figure, taking the thickness of the first group of pin feet 400 being less than the thickness of the second group of pin feet 500 as an example, when the second electrode 60 contacts the second group of pin feet 500 with greater thickness, the first electrode 50 fails to contact the first group of pin feet 400 with smaller thickness. In this state of contact, as shown in the figure, the second group of pin feet 500 gives the second electrode 60 an upward force due to the interaction between the second group of pin feet 500. Under the driving action of the force, the second electrode 60 drives the second electrode carrier 40 in contact therewith to move upward relative to the shell 10 along the third direction Z (as shown by the direction a indicated by the dotted arrow in the figure). When the second electrode carrier 40 moves upward, the third balancing member 23 in contact therewith is pushed to move upward and rotate counterclockwise relative to the accommodating cavity 11 about the first direction X, and at the same time, the third balancing member 23 pushes the first balancing member 21 in contact therewith to start rotating counterclockwise relative to the accommodating cavity 11 about the first direction X (as shown by the direction b indicated by the dotted arrow in the figure). The rotation of the first balancing member 21 causes the second balancing member 22 in contact therewith to move downward and rotate counterclockwise relative to the accommodating cavity 11 about the first direction X, and at the same time, the second balancing member 22 further drives the first electrode carrier 30 in contact therewith to move downward relative to the shell 10 along the third direction Z (as shown by the direction c indicated by the dotted arrow in the figure). Thus, the first electrode 50 which fails to contact can contact the first group of pin feet 400, so as to successfully weld the first group of pin feet 400 and the second group of pin feet 500. Figure 3B Figure 1 Figure 3C Figure 3C Figure 3C Figure 3C

[0098] ​​​​​​Similarly, when the thickness of the first group of pin sets 400 is greater than the thickness of the second group of pin sets 500, the first electrode 50 contacts the first group of pin sets 400 with greater thickness, and the second electrode 60 fails to contact the second group of pin sets 500 with smaller thickness. In this contact state, the first group of pin sets 400 gives the first electrode 50 an upward force due to the interaction force between them. Under the driving action of this force, the first electrode 50 drives the first electrode carrier 30 in contact with it to move upward relative to the shell 10 along the third direction Z. When the first electrode carrier 30 moves upward, it pushes the second balance piece 22 in contact with it to move upward and rotate clockwise relative to the accommodating cavity 11 about the first direction X, at the same time, the second balance piece 22 pushes the first balance piece 21 in contact with it to start rotating clockwise relative to the accommodating cavity 11 about the first direction X. The rotation of the first balance piece 21 causes the third balance piece 23 in contact with it to move downward and rotate clockwise relative to the accommodating cavity 11 about the first direction X at the same time, at this time, the third balance piece 23 further drives the second electrode carrier 40 in contact with it to move downward relative to the shell 10 along the third direction Z. Thus, the second electrode 60 that fails to contact can contact the second group of pin sets 500 to successfully weld the first group of pin sets 400 and the second group of pin sets 500.

[0099] In some possible implementations, with reference to Figure 2 、 Figure 3A and Figure 4 , the first balance piece 21 includes a first flat section 211 and a first circular arc 212. The first flat section 211 is in contact with the second balance piece 22 and the third balance piece 23. In combination with the dashed circle shown in Figure 3A , the first circular arc 212 is an optimal arc, and the center of the first circular arc 212 coincides with the first fulcrum O1.

[0100] The accommodating cavity 11 includes a first arc-shaped section 111 and a vertical section 112. The shape of the first arc-shaped section 111 is adapted to the first circular arc 212 and is in contact with the first circular arc 212. Along the third direction Z, the vertical section 112 has a first width L1, and the diameter D1 of the first circular arc 212 is equal to the first width L1.

[0101] In some possible implementations, with reference to Figure 3A 、 Figures 4 to 6 , the second balance piece 22 includes a second flat section 221 and a second circular arc 222, and the second flat section 221 is in contact with the first flat section 211.

[0102] The first electrode carrier 30 includes a second arc-shaped section 31, and along the third direction Z, the second circular arc 222 protrudes from the second arc-shaped section 31, and a part of the second circular arc 222 is in contact with the second arc-shaped section 31.

[0103] With the above technical scheme, if the second arc 222 is in full contact with the second arc segment 31, when the first electrode carrier 30 pushes the second balancing piece 22 to move upward along the third direction Z relative to the accommodating cavity 11, the second balancing piece 22 cannot rotate relative to the accommodating cavity 11 with the first direction X as the axis. Correspondingly, the first balancing piece 21 cannot rotate relative to the accommodating cavity 11 with the first direction X as the axis, and the third balancing piece 23 cannot move downward along the third direction Z relative to the accommodating cavity 11, and the second electrode carrier 40 and the second electrode 60 cannot move downward along the third direction Z relative to the accommodating cavity 11, so that the first electrode 50 and the second electrode 60 of the double-electrode welding device 100 lose the automatic adjustment capability.

[0104] In some possible implementation manners, referring to Figures 4 to 6 、 Figure 1 , the third balancing piece 23 comprises a third straight segment 231 and a third arc 232. The third straight segment 231 is in contact with the first straight segment 211, and the length of the third straight segment 231 is less than the sum of the length of the second straight segment 221 and the first width L1.

[0105] The second electrode carrier 40 comprises a third arc segment 41, and the third arc 232 protrudes from the third arc segment 41 along the third direction Z, and a part of the third arc 232 is in contact with the third arc segment 41.

[0106] With the above technical scheme, if the third arc 232 is in full contact with the third arc segment 41, when the second electrode carrier 40 pushes the third balancing piece 23 to move upward along the third direction Z relative to the accommodating cavity 11, the third balancing piece 23 cannot rotate relative to the accommodating cavity 11 with the first direction X as the axis. Correspondingly, the first balancing piece 21 cannot rotate relative to the accommodating cavity 11 with the first direction X as the axis, and the second balancing piece 22 cannot move downward along the third direction Z relative to the accommodating cavity 11, and the first electrode carrier 30 and the first electrode 50 cannot move downward along the third direction Z relative to the accommodating cavity 11, so that the first electrode 50 and the second electrode 60 of the double-electrode welding device 100 lose the automatic adjustment capability.

[0107] In some possible implementation manners, referring to Figure 2 、 Figure 7 and Figure 1 , the double-electrode welding device 100 comprises a cover plate 70 connected with the shell 10 to form the accommodating cavity 11. The first balancing piece 21, the second balancing piece 22, the third balancing piece 23, the first electrode carrier 30 and the second electrode carrier 40 are defined in the accommodating cavity 11.

[0108] In some possible implementation manners, referring to Figure 6The shell 10 comprises a connecting piece 12 for connecting with a welding machine carrier (not shown in the figure).

[0109] In some possible embodiments, the first electrode carrier 30 comprises a first top wire 32, and a side wall of the first electrode carrier 30 comprises a first through hole 33, the first top wire 32 passing through the first through hole 33 and abutting against one end of the first electrode 50, the first top wire 32 being used for fixing the first electrode 50. ​

[0110] The second electrode carrier 40 comprises a second top wire 42, and a side wall of the second electrode carrier 40 comprises a second through hole 43, the second top wire 42 passing through the second through hole 43 and abutting against one end of the second electrode 60, the second top wire 42 being used for fixing the second electrode 60.

[0111] In some possible embodiments, the first electrode 50 is made of copper alloy, and the second electrode 60 is made of copper alloy.

[0112] It should be noted that the materials of the first electrode 50 and the second electrode 60 are not specifically limited in the embodiments of the present application, for example, in other possible embodiments, the materials of the first electrode 50 and the second electrode 60 can be tungsten alloy, chromium alloy, aluminum alloy, molybdenum alloy, tungsten, molybdenum, etc.

[0113] In some possible embodiments, the shell 10, the length adjusting part 20, the first electrode carrier 30 and the second electrode carrier 40 are made of conductive material.

[0114] With the above technical solution, the double-electrode welding device 100 needs to be powered to make the first electrode 50 and the second electrode 60 weld the chip and the terminal, therefore, the shell 10, the length adjusting part 20, the first electrode carrier 30 and the second electrode carrier 40 are made of conductive material.

[0115] Although the present application has been illustrated and described with reference to certain preferred embodiments thereof, it should be understood by the skilled in the art that the foregoing is a further detailed description of the present application in connection with specific embodiments, and the specific implementation of the present application should not be limited to these descriptions. Those skilled in the art can make various changes in form and details, including making a number of simple derivations or substitutions, without departing from the spirit and scope of the present application.​

Claims

1. A dual-electrode welding apparatus, characterized in that, The dual-electrode welding apparatus includes: The housing includes a receiving cavity; A length adjustment part is provided in the receiving cavity, and the length adjustment part is rotatable relative to the receiving cavity about a first fulcrum with a first direction as the axis; A first electrode carrier is in contact with one end of the length adjustment section; The second electrode carrier is arranged in the receiving cavity in a second direction, with the first electrode carrier and the second electrode carrier side by side. The second electrode carrier is in contact with the other end of the length adjustment part. The second direction is perpendicular to the first direction. A first electrode, one end of which is disposed inside and connected to the first electrode carrier, and the other end of which extends out of the outer shell. The first electrode can be driven by an external structural component to move relative to the outer shell along a third direction, which is perpendicular to the first direction. The second electrode has one end located inside and connected to the second electrode carrier, and the other end extends out of the outer shell. The second electrode can be driven by an external structural component to move relative to the outer shell along the third direction. The direction of movement of the second electrode is opposite to that of the first electrode.

2. The dual-electrode welding apparatus as described in claim 1, characterized in that, The length adjustment unit includes: A first balancing member is disposed in the receiving cavity, and the first balancing member is rotatable about the first fulcrum with the first direction as the axial direction relative to the receiving cavity; A second balancing member is disposed in the receiving cavity along the third direction, one end of the second balancing member is in contact with the first balancing member, and the other end of the second balancing member is in contact with the first electrode carrier; A third balancing element is disposed in the receiving cavity along the second direction. The third balancing element and the second balancing element are disposed side by side in the receiving cavity, and the third balancing element and the second balancing element are spaced apart. Along the third direction, one end of the third balancing element contacts the first balancing element, and the other end of the third balancing element contacts the second electrode carrier.

3. The dual-electrode welding apparatus as described in claim 2, characterized in that, The first balancing component includes: The first straight section is in contact with the second and third balancing components; The first arc is a major arc, and the center of the first arc coincides with the first fulcrum. The receiving cavity includes: The first arc segment has a shape that matches the first circular arc and is in contact with the first circular arc; The vertical segment, along the third direction, has a first width, and the diameter of the first arc is equal to the first width.

4. The dual-electrode welding apparatus as described in claim 3, characterized in that, The second balancing component includes: The second straight segment is in contact with the first straight segment; Second arc; The first electrode carrier includes: The second arc segment, along the third direction, the second arc protrudes from the second arc segment, and a portion of the second arc contacts the second arc segment.

5. The dual-electrode welding apparatus as described in claim 3, characterized in that, The third balancing component includes: The third straight segment contacts the first straight segment, and the sum of the length of the third straight segment and the length of the second straight segment is less than the first width; The third arc; The second electrode carrier includes: The third arc segment, along the third direction, the third arc protrudes from the third arc segment, and a portion of the third arc contacts the third arc segment.

6. The dual-electrode welding apparatus as described in claim 1, characterized in that, The dual-electrode welding apparatus includes a cover plate connected to the housing to form the receiving cavity, which confines the length adjustment part, the first electrode carrier, and the second electrode carrier within the receiving cavity.

7. The dual-electrode welding apparatus as described in claim 1, characterized in that, The housing includes a connector for connecting to an external welding machine carrier.

8. The dual-electrode welding apparatus as described in claim 1, characterized in that, The first electrode carrier includes a first set screw, and the sidewall of the first electrode carrier includes a first through hole. The first set screw passes through the first through hole and abuts against one end of the first electrode. The first set screw is used to fix the first electrode. The second electrode carrier includes a second set screw, and the sidewall of the second electrode carrier includes a second through hole. The second set screw passes through the second through hole and abuts against one end of the second electrode. The second set screw is used to fix the second electrode.

9. The dual-electrode welding apparatus as described in claim 1, characterized in that, The first electrode is made of copper alloy, and the second electrode is made of copper alloy.

10. The dual-electrode welding apparatus as described in claim 1, characterized in that, The outer shell, the length adjustment part, the first electrode carrier, and the second electrode carrier are made of conductive materials.

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