A busbar clamping tool

Abstract

The application relates to the technical field of clamping tools, in particular to a commutator clamping tool which solves the technical problem of improving the clamping firmness of the commutator and ensuring that the spliced joint is tightly attached, the commutator comprising a circular ring body which is spliced by two semicircular plates or at least three arc-shaped plates, the clamping tool comprising a clamping seat and a bearing groove arranged at the top end of the clamping seat, the bearing groove comprising a first bearing groove, a first pressing device and a second pressing device, the first bearing groove is used for bearing the ring body, the first pressing device is used for pressing the upper surface of the ring body, and the second pressing device is used for pressing the side end of the ring body, the first pressing device comprises a pressing rod, a pressing claw and a pressing claw driving device, the pressing claw driving device drives the pressing claw to drive the pressing rod to move towards the commutator, so that the pressing rod presses the upper surface of the circular ring body, and the second pressing device comprises at least three elastic pressing plates, one end of the elastic pressing plate is fixed to the clamping seat, and the other end of the elastic pressing plate abuts against the side end of the ring body.

Description

Technical Field

[0001] This invention relates to the field of bus ring processing technology, and in particular to a bus ring clamping fixture. Background Technology

[0002] A bus ring is a central hub terminal used for current conduction, including shunting and combining. In power electronic systems, bus rings are commonly used for current conversion and conduction. For example, in new energy vehicles, bus rings conduct current from the battery to the vehicle's infotainment system and drive motor. A bus ring mainly consists of a circular ring body and lead connectors (primarily soft copper strips or soft copper busbars, including current lead connectors and / or voltage lead connectors).

[0003] During the processing of the bus ring, the lead connector is mainly connected to the circular ring body by welding. The traditional welding method is manual welding, in which the welder holds a temperature-controlled soldering iron to perform the welding operation. However, this welding method requires the simultaneous filling of welding material, which is time-consuming, labor-intensive, inefficient, and results in poor welding quality. Problems such as the lead connector not fitting tightly to the circular ring body lead to low welding strength and easy formation of pores.

[0004] To address the aforementioned problems, the applicant has invented a bus ring welding device. This device requires a clamping fixture to clamp the bus ring, facilitating automated welding operations. Figure 4 The diagram shows a common busbar structure, which includes a ring body a. The ring body is circular and is composed of at least two semi-circular plates or at least three arc-shaped plates. During welding, if the clamping is not secure, or if the joint between the two semi-circular plates or the two adjacent arc-shaped plates is not tightly fitted, pores are easily generated in the joint, affecting the welding quality. Therefore, it is urgent to develop a clamping fixture that can improve the clamping security of the busbar and ensure that the joint is tightly fitted. Summary of the Invention

[0005] To address the aforementioned technical problems in the prior art, this invention provides a manifold clamping fixture and welding device, which facilitates stable clamping of the manifold, ensures tight fit of the splice seam, and helps improve welding efficiency and welding quality.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A manifold clamping fixture includes a circular ring body, which is formed by splicing two semi-circular plates or at least three arc-shaped plates. The clamping fixture includes a clamping base and a bearing groove disposed at the top of the clamping base. The bearing groove includes a first bearing groove for supporting the ring body. The clamping fixture further includes a first clamping device and a second clamping device. The first clamping device is used to clamp the upper surface of the ring body, and the second clamping device is used to clamp the side ends of the ring body. The first clamping device includes a pressure rod, a clamping gripper, and a clamping gripper driving device. The pressure rod is connected to the clamping gripper driving device through the clamping gripper. During the clamping operation, the clamping gripper driving device drives the clamping gripper to move the pressure rod towards the manifold, causing the pressure rod to clamp the upper surface of the circular ring body.

[0008] Its further feature is that,

[0009] Furthermore, the gripper includes a second mounting base, at least three connecting rods connecting the gripper rod to the second mounting base, a guide rod connecting the second mounting base to the gripper drive device, and a spring. The spring is fitted onto the guide rod, and the connecting rods are evenly spaced along the outer edge of the second mounting base.

[0010] Furthermore, the clamp also includes a circular support base, which is fixed to the upper part of the guide rod. The non-pressure head end of the clamp is fixed to one end of the connecting rod, and the other end of the connecting rod is rotatably mounted on the second mounting base. A first bending angle is provided in the middle of the connecting rod, and the inner bending surface of the first bending angle abuts against the outer edge of the top of the support base.

[0011] Furthermore, the first bending angle is an obtuse angle, and the inner bending surface is an arc-shaped surface;

[0012] Furthermore, the pressure gripping drive device is a cylinder, the cylinder body of which is fixedly connected to the bottom end of the clamping seat, the piston rod of which is a power shaft, and one end of the piston rod passes through the middle of the clamping seat and is then fixedly connected to the middle of the support seat and the second mounting seat in sequence.

[0013] Furthermore, the spring is installed between the support base and the clamping base, with one end of the spring fixedly connected to the bottom end of the support base and the other end fixedly connected to the top end of the clamping base;

[0014] Furthermore, the second clamping device includes at least three elastic pressure plates, which are evenly distributed circumferentially along the edge of the first bearing groove. One end of each elastic pressure plate is fixed to the clamping seat, and the other end presses against the side end of the ring body.

[0015] Furthermore, the elastic pressure plate includes a connecting part and a pressing part. The pressing part and the connecting part are connected by a V-shaped connecting plate. One end of the V-shaped connecting plate extends straight to the bottom end of the pressing part. The connecting plate and the other end of the V-shaped connecting plate are connected at a certain angle. The pressing part is provided with a second bending angle. The inner bending surface of the second bending angle corresponds to the side end of the ring body.

[0016] Furthermore, the clamping base has a fourth through hole, one end of which is connected to the first bearing groove. The V-shaped connecting plate is located inside the fourth through hole, the pressing part is located on the side close to the first bearing groove, and the connecting part is fixed to the top of the clamping base on the side away from the first bearing groove.

[0017] Furthermore, the clamping base is also provided with a fifth through hole, which corresponds to the mating surface between the two semi-circular plates or the two adjacent arc-shaped plates.

[0018] A busbar welding device includes a turntable rotatably mounted on a tooling table, a busbar clamping fixture mounted on the turntable, a robot arm, and a welding head mounted on the execution end of the robot arm. The busbar clamping fixture is used to clamp the busbar. The device is characterized in that it further includes a flipping mechanism, through which the busbar clamping fixture is mounted on the turntable.

[0019] The steps of welding the bus ring using the welding device include: S1, clamping the bus ring using a bus ring clamping fixture;

[0020] S2. The turntable rotates, moving the clamped manifold to below the robotic arm;

[0021] S3. The welding head is controlled by a robotic arm to perform welding operations on the bus ring, including: S31. Welding the upper surface weld of the bus ring with the welding head;

[0022] S32. Drive the busbar clamping fixture and rotate the busbar 180° by the flipping mechanism;

[0023] S33. Weld the lower surface weld of the busbar ring using a welding head.

[0024] Its further feature is that,

[0025] The busbar clamping fixture includes at least one, and the busbar clamping fixture is evenly spaced along the circumference of the turntable;

[0026] Furthermore, the welding method of the welding head is laser autofusion welding;

[0027] Furthermore, the flipping mechanism includes a quick-change fixture, a flipping seat, and a drive device for flipping the flipping seat. The quick-change fixture includes a clamping part and an mounting part connected to the clamping part. One end of the clamping seat of the busbar clamping fixture is fixed to the front end of the clamping part. The mounting part is fixed to the front end of the flipping seat. The rear end of the flipping seat is fixed to the power shaft of the drive device.

[0028] Furthermore, in step S33, the welding head welds the lower surface of the busbar ring through the fifth through hole on the clamping seat.

[0029] The above-mentioned structure of the present invention can achieve the following beneficial effects: (1) The busbar clamping fixture is provided with a first bearing groove, a first pressing device and a second pressing device. Before the welding operation, the ring is placed in the first bearing groove and the upper surface of the ring is pressed by the first pressing device. The side end of the ring is pressed by the second pressing device, thereby realizing the clamping of the ring to be welded. The clamping operation is simple and quick, which is conducive to improving the overall welding efficiency.

[0030] (2) The first clamping device is used to clamp the upper surface of the ring body to prevent the ring body from shifting during subsequent welding and affecting the subsequent welding quality. The second clamping device is used to clamp the side end of the ring body to give the ring body a squeezing force towards the center of the bus ring, ensuring that the weld between the two semi-circular plates or the two adjacent arc plates can fit tightly, preventing the lead wire joint from shifting during subsequent welding and causing porosity, which affects the welding position and is conducive to improving the welding quality. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural schematic diagram of the bus ring according to Embodiment 1 of the present invention;

[0032] Figure 2 This is a three-dimensional structural schematic diagram of the bus ring of the present invention, embodiment two;

[0033] Figure 3 This is a three-dimensional structural schematic diagram of the bus ring of the present invention, embodiment three;

[0034] Figure 4 This is a three-dimensional structural schematic diagram of the bus ring of the present invention, embodiment four;

[0035] Figure 5 This is a three-dimensional structural diagram of a first embodiment of the busbar clamping fixture of the present invention (first embodiment of busbar placement);

[0036] Figure 6 This is a three-dimensional structural schematic diagram of a first embodiment of the busbar clamping fixture of the present invention (the first mounting plate is omitted as the busbar is not placed in the first embodiment);

[0037] Figure 7This is a three-dimensional structural diagram of the second embodiment of the busbar clamping fixture of the present invention (second embodiment of busbar placement);

[0038] Figure 8 This is a three-dimensional structural diagram of Embodiment 2 of the busbar clamping fixture of the present invention (Embodiment 2 without busbar placed);

[0039] Figure 9 This is a three-dimensional structural diagram of the third embodiment of the busbar clamping fixture of the present invention (the third embodiment of placing the busbar);

[0040] Figure 10 This is a three-dimensional structural diagram of the third embodiment of the busbar clamping fixture of the present invention (the third embodiment without the busbar clamping fixture);

[0041] Figure 11 This is a three-dimensional structural diagram of the fourth embodiment of the busbar clamping fixture of the present invention (fourth embodiment of busbar placement);

[0042] Figure 12 This is a three-dimensional structural schematic diagram of the fourth embodiment of the busbar clamping fixture of the present invention (the fourth embodiment without the busbar clamping fixture);

[0043] Figure 13 This is a three-dimensional structural diagram of the welding device of the present invention;

[0044] Figure 14 This is a three-dimensional structural diagram of the connection between the clamping fixture and the flipping seat in Embodiment 1 of the welding device of the present invention.

[0045] Attached reference numerals: ring a, lead wire connector b, mounting groove a0, upper horizontal plate b1, lower horizontal plate b2, Z-shaped connecting plate or S-shaped connecting plate b3, bent rod a1, vertical rod a2;

[0046] Clamping seat 1, first clamping device 2, second clamping device 3, first bearing groove 4, second bearing groove 5, pressure rod 21, pressure rod driving device 22, first connecting plate 23, latch 31, support block 51, mounting block 52, second waist-shaped hole 54, positioning block 55, third boss 56, first through hole 6, first mounting plate 7, second through hole 8, first mounting seat 9, first boss 71, second boss 72, third through hole 41;

[0047] Second mounting base 201, connecting rod 202, guide rod 203, spring 204, support base 205, gripping drive device 206, first bending angle 2021, elastic pressure plate 301, connecting part 3011, pressing part 3012, V-shaped connecting plate 3013, second bending angle 3014, fourth through hole 302, fifth through hole 303;

[0048] Turntable 10, tilting seat 101, motor 102, clamping part 103, mounting part 104, grating 105, baffle 106, first proximity switch 1071, second proximity switch 1072, third proximity switch 1073, fourth proximity switch 1074, third mounting seat 108. Detailed Implementation

[0049] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0050] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this invention are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product or device.

[0051] A bus ring is a central hub terminal that enables current conduction, such as shunting and merging. The following provides several specific structures of bus rings. Any of these bus ring structures can be used in new energy vehicles to facilitate the conduction of current from the new energy battery to the vehicle's infotainment system and drive motor.

[0052] Example 1 of the bus ring, see Figure 1 It includes a ring body a and a lead connector b. A mounting groove a0 is provided on the outer edge of one side of the ring body a. The mounting groove a0 is used to weld the lead connector b. The ring body a is a circular ring with a notch on the other side. The lead connector b is an irregularly shaped soft copper busbar, including: an upper horizontal plate b1, a lower horizontal plate b2, and a Z-shaped connecting plate or an S-shaped connecting plate b3. One end of the upper horizontal plate b1 is fixed to one end of the lower horizontal plate b2 through the Z-shaped connecting plate or the S-shaped connecting plate b3. One end of the upper horizontal plate b1 is fixed to the top of one side of the Z-shaped connecting plate or the S-shaped connecting plate b3. One end of the lower horizontal plate b2 is fixed to the bottom of the other side of the Z-shaped connecting plate or the S-shaped connecting plate b3. The other end of the upper horizontal plate b1 is used to weld to the ring body a.

[0053] Example 2 of the bus ring, see Figure 2 The structure of this busbar ring is the same as that of the first embodiment of the busbar ring. The difference is that in the second embodiment of the busbar ring, the other end of the lower horizontal plate b2 is used for welding connection with the ring body a.

[0054] The bus ring structure in embodiment three is the same as that in embodiment two, except that... (See details below) Figure 3 In this embodiment, the size of the bus ring is different from that of the bus ring in embodiment two, and the shape of the upper horizontal plate b1 and the lower horizontal plate b2 are different from those of the bus ring in embodiment two.

[0055] Example 4 of the bus ring, see Figure 4 It includes a ring body a, which is a circular ring and is formed by splicing together at least two semi-circular plates or at least three arc-shaped plates. In this embodiment, the ring body a is formed by splicing together three arc-shaped plates to form a circular ring.

[0056] In the first to third embodiments of the busbar ring, the upper horizontal plate b1, the lower horizontal plate b2, and the Z-shaped connecting plate or the S-shaped connecting plate b3 are all integrally formed.

[0057] Different bus ring structures require different bus ring clamping fixtures. To facilitate the clamping of bus rings with different structures in the above bus ring embodiments one to four, specific embodiments of several bus ring clamping fixtures are provided below.

[0058] Example 1 of the bus ring clamping fixture, see Figure 5 , Figure 6 This fixture is used to clamp the busbar in Embodiment 1. The busbar clamping fixture includes a clamping base 1, a bearing groove disposed at the top of the clamping base 1, three first clamping devices 2, and one second clamping device 3. The bearing groove includes a first bearing groove 4 and a second bearing groove 5 located on one side of the first bearing groove 4. A first notch is provided at one end of the second bearing groove 5, and the second bearing groove 5 communicates with the first bearing groove 4 through the first notch. The first bearing groove 4 is used to support the ring body a, and the second bearing groove 5 is used to support the lead connector b. The three first clamping devices 2 are adjacent to the first bearing groove 4 and are evenly distributed circumferentially for clamping the ring body a. The second clamping device 3 is arranged adjacent to the second bearing groove 5 for clamping the lead connector b.

[0059] To facilitate the clamping of ring a, the structure of the first clamping device 2 includes a pressure rod 21 located above the first bearing groove 4 and a pressure rod driving device 22. One end of the pressure rod 21 faces the first bearing groove 4, and the other end is fixed to the power shaft of the pressure rod driving device 22 through the first connecting plate 23. In this embodiment, the pressure rod driving device is a cylinder. The piston rod of the cylinder passes through the clamping seat 1 and is fixed to one end of the first connecting plate 23. The other end of the pressure rod 21 is fixed to the other end of the first connecting plate 23.

[0060] To ensure that the lead connector b fits tightly with the mounting groove a0 on the outer edge of the ring a, the structure of the second clamping device 3 includes a latch 31. In this embodiment, the non-clamping end of the latch 31 is movably mounted in the second bearing groove 5 away from the first bearing groove 4 by a spring. The clamping end of the latch 31 corresponds to the side end of the lead connector b and is used to push the other end of the lower horizontal plate b2 in the lead connector b, so that the other end of the upper horizontal plate b1 in the lead connector b fits tightly in the mounting groove of the ring a, and clamps the lead connector b in the second bearing groove 5.

[0061] A support block 51 is provided on one side of the second bearing groove 5. The support block 51 is located in the second bearing groove 5 near the side end of the first bearing groove 4.

[0062] To facilitate subsequent welding of the lower surface weld seam where the lead connector and the ring body fit together, a first through hole 6 is provided on the clamping seat 1 between the first bearing groove 4 and the second bearing groove 5. The mating surface of the lead connector b and the ring body a is perpendicular to the center directly above the first through hole 6. The setting of the first through hole 6 not only facilitates the welding gas blown out by the welding head to pass through the first through hole 6 to perform welding operation on the lower surface weld seam where the lead connector b and the ring body a fit together, but also enables the welding gas and heat to be concentrated in the first through hole 6, preventing the welding gas from dissipating quickly and affecting the welding effect. Therefore, the setting of the first through hole 6 is conducive to further improving the welding quality and welding efficiency of the lower surface weld seam of the busbar ring.

[0063] In this embodiment, the clamping fixture also includes a gas-gathering area, which includes a first mounting plate 7 and a second through hole 8 opened at one end of the first mounting plate 7. The second through hole 8 corresponds to the top of the first through hole 6. The other end of the first mounting plate 7 is fixed to the top of the clamping base 1 through a first mounting seat 9. The contact surface between the lead wire connector b and the ring body a is located between the first through hole 6 and the second through hole 8. The second through hole 8 can gather the welding gas in the hole, preventing the welding gas from spreading out quickly and affecting the welding effect. Therefore, the setting of the second through hole 8 is beneficial to further improve the welding quality and welding efficiency of the weld seam on the upper surface of the busbar ring.

[0064] The bottom end of the first mounting plate 7 is provided with a boss, which includes a first boss 71 and two second bosses 72. The first boss 71 is located at the bottom front side of the second through hole 8 and corresponds to the top of the lead wire connector b. The second bosses 72 are located at the bottom left and bottom right sides of the second through hole 8, respectively, and correspond to the top of the ring body a. The first boss 71 and the second bosses 72 are used to press the upper surface of the ring body a, thereby further ensuring the clamping stability of the ring body a and further preventing the ring body a from moving and affecting the subsequent welding quality.

[0065] In this embodiment, the manifold ring is provided with a bent rod a1 and a vertical rod a2. The vertical rod a2 is perpendicularly connected to the ring a through the bent rod a1. The ring a, the bent rod a1, and the vertical rod a2 are integrally formed. The first bearing groove 4 has several third through holes 41. When the ring a is placed in the first bearing groove 4, the vertical rod a2 is installed in the corresponding third through holes 41. The setting of the third through holes 41 not only facilitates the clamping of the ring a, but also improves the clamping stability of the ring a by installing the vertical rod a2 in the corresponding third through holes 41, and further prevents the ring a from moving and affecting the subsequent welding quality.

[0066] When using this manifold clamping fixture to clamp the manifold, the ring body a is placed in the first bearing groove 4, and then the ring body a is pressed by the first pressing device 2. Specifically: First, after the ring body a is placed in the first bearing groove 4, the piston rods of the three cylinders retract, driving the first connecting plate 23 and the pressure rod 21 to descend, so that the pressure head of the pressure rod 21 presses against the top of the ring body a.

[0067] Next, place the lead connector b in the second bearing groove 5. During the placement process, manually press the latch 31 so that the other end of the lower horizontal plate b2 in the lead connector b corresponds to the clamping end of the latch 31. The bottom end of the upper horizontal plate b1 in the lead connector b is supported by the support block 51, and the other end of the upper horizontal plate b1 fits into the mounting groove on the outer edge of the ring a, thereby clamping the lead connector b into the second bearing groove 5.

[0068] Example 2 of the bus ring clamping fixture, see Figure 7 , Figure 8 This is a clamping fixture used for mounting the busbar in Embodiment 2. The busbar clamping fixture includes a clamping base 1, a first bearing groove 4, a first clamping device 2, a first through hole 6, and a third through hole 41. The structure of these components is consistent with that of the busbar clamping fixture in Embodiment 1. However, the structure of the second bearing groove and the structure of the second clamping device in this embodiment differ from those in Embodiment 1.

[0069] In this embodiment, to ensure a tight fit between the lead connector b and the mounting groove a0 on the outer edge of the ring a, the second clamping device 3 is configured to include a latch 31, a support block 51, and a mounting block 52. In this embodiment, the support block 51 is located on the side of the second bearing groove 5 away from the first bearing groove 4. The mounting block 52 is mounted on the top of the support block 51 and is used to mount the latch 31. The non-clamping end of the latch 31 is movably mounted on the side end of the mounting block 52 by a spring. The other end of the upper horizontal plate b1 of the lead connector b corresponds to the clamping end of the latch 31, and the other end of the lower horizontal plate b2 corresponds to the mounting groove of the ring a. The support block 51 is supported on the bottom end of the upper horizontal plate b1. To facilitate the installation or replacement of the support block 51, a first oblong hole is opened on the clamping seat 1, and one end of the first bolt passes through the first oblong hole to fix the support block 51 to the clamping seat 1. A second oblong hole 54 is opened on the support block 51, and one end of the second bolt passes through the second oblong hole 54 to fix the mounting block 52 to the support block 51. The first oblong hole facilitates the position adjustment of the support block 51, and the second oblong hole 54 facilitates the position adjustment of the mounting block 52, thus meeting the clamping requirements of lead wire connectors of different lengths.

[0070] To facilitate the quick installation of the support block 51, the busbar clamping fixture is also equipped with a positioning block 55. The side end of the positioning block 55 has a positioning hole. Before installing the support block 51, the side end of the support block 51 away from the second bearing groove 5 is first installed in the positioning hole, thereby realizing the quick positioning of the support block 51 and improving the installation efficiency.

[0071] The locking end of the latch 31 corresponds to the other end of the upper horizontal plate b1 in the lead connector b, and is used to push the other end of the upper horizontal plate b1 in the lead connector b, so that the other end of the lower horizontal plate b2 in the lead connector b is tightly fitted into the mounting groove of the ring body a, thereby locking the bus ring in the second bearing groove 5.

[0072] When using this manifold clamping fixture to clamp the manifold, the manifold body is placed in the first bearing groove 4, and then the manifold body is pressed by the first pressing device 2. Specifically: First, after the manifold body a is placed in the first bearing groove 4, the piston rods of the three cylinders retract, driving the corresponding first connecting plate 23 and pressure rod 21 to descend, so that the pressure head of the pressure rod 21 presses against the top of the manifold body a.

[0073] Next, place the lead connector b in the second bearing groove 5. During the placement process, manually press the latch 31 so that the other end of the upper horizontal plate b1 in the lead connector b corresponds to the clamping end of the latch 31. The bottom end of the upper horizontal plate b1 is supported by the support block 51, and the other end of the lower horizontal plate b2 fits into the mounting groove on the outer edge of the ring a, thereby clamping the lead connector b into the second bearing groove 5.

[0074] In this embodiment, a third protrusion 56 is provided on the side end of the mounting block 52. The clamping end of the latch 31 is located in the gap between the third protrusion 56 and the top of the support block 51. The height of the gap is slightly greater than the thickness of the upper horizontal plate b1 in the lead connector b. Before clamping the lead connector b with the latch 31, the other end of the lead connector b is first placed in the gap. It can be seen that the third protrusion 56 has a certain positioning and limiting function, preventing the other end of the lead connector from being lifted or detached from the latch 31 when clamping the lead connector b, thus affecting the clamping effect.

[0075] In addition, in this embodiment, the side end face of the mounting block 52 is a first inclined surface, and the side end face of the support block 51 is a second inclined surface, in order to match the shape of the lead connector, thereby satisfying the clamping of irregularly shaped lead connectors.

[0076] Example 3 of the bus ring clamping fixture, see Figure 9 , Figure 10 This is a busbar clamping fixture used in Embodiment 3. The structure of the clamping base 1, the first bearing groove 4, the first through hole 6, the third through hole 41, the second bearing groove 5, the first clamping device 2, and the second clamping device 3 in this busbar clamping fixture is consistent with the structure in Embodiment 2. However, the size of the busbar in Embodiment 3 is different from that in Embodiment 2, and the shapes of the upper horizontal plate b1 and the lower horizontal plate b2 are different from those of the upper and lower horizontal plates in Embodiment 2. Therefore, in this Embodiment 3, the size of the second bearing groove 5 is different from that in Embodiment 2, and the position of the support block 51 on one side of the second bearing groove 5 and the shape of the front end of the support block 51 are different from those in Embodiment 2.

[0077] In addition, in this embodiment, there are two first pressing devices 2, and the two first pressing devices 5 are located on both sides of the first through hole 6, which ensures that the pressing ring a is firmly pressed.

[0078] The busbar clamping fixtures described in Embodiments 1 to 3 above have the following advantages:

[0079] (1) The busbar clamping fixture is provided with a first bearing groove, a second bearing groove, a first clamping device, and a second clamping device. One side of the first bearing groove is connected to one side of the second bearing groove. Before welding, the ring body is placed in the first bearing groove and the upper surface of the ring body is clamped by the first clamping device. The lead wire connector is placed in the second bearing groove and one side of the lead wire connector is pushed by the second clamping device so that the other side of the lead wire connector fits into the ring body mounting groove. The clamping operation is simple and quick, which helps to improve the clamping efficiency.

[0080] (2) The first clamping device ensures that the ring body is clamped securely, preventing the ring body from moving during subsequent welding and affecting the welding position and welding quality. The second clamping device ensures that the lead wire connector is clamped securely, and at the same time ensures that the other end of the lead wire connector is tightly fitted with the ring body mounting groove, preventing the lead wire connector from shifting during subsequent welding and causing air holes or affecting the welding position, which is beneficial to improving the welding quality.

[0081] Example 4 of the bus ring clamping fixture, see Figure 11 , Figure 12 The clamping fixture for mounting the busbar in Embodiment 4 includes a clamping base 1, a bearing groove disposed at the top of the clamping base, a first pressing device 2, and a second pressing device 3. The bearing groove includes a first bearing groove 4, which is used to support the ring body a. The first pressing device 2 is used to press the upper surface of the ring body a, and the second pressing device 3 is used to press the side end of the ring body a.

[0082] To facilitate longitudinal compression of ring a, the first compression device 2 includes a pressure rod 21, a pressure gripper, and a pressure gripper drive device. The pressure rod 21 is connected to the pressure gripper drive device via the pressure gripper. The pressure gripper drive device drives the pressure gripper to compress the pressure rod 21 against the upper surface of ring a. The pressure gripper includes a second mounting base 201, at least three connecting rods 202 connecting the pressure rod 21 to the second mounting base 201, a guide rod 203 connecting the second mounting base 201 to the pressure gripper drive device, a spring 204, and a circular support base 205. In this embodiment, there are six sets of connecting rods 202 and pressure rods 21. The six sets of connecting rods 202 are evenly spaced along the outer edge of the second mounting base 201. When the pressure gripper drive device drives the guide rod 203 to push the support base 205 to compress the spring 204, the connecting rods 202 drive the pressure rod 21 to move towards the first bearing groove 4, so that the pressure head of the pressure rod 21 presses against the upper surface of ring a.

[0083] In this embodiment, the support base 205 is fixed to the upper part of the guide rod 203, the non-pressure head end of the pressure rod 21 is fixed to one end of the connecting rod 202, and the other end of the connecting rod 202 is rotatably mounted on the bottom end of the second mounting base 201 and limited by the outer edge of the bottom end of the second mounting base. A first bending angle 2021 is provided in the middle of the connecting rod 202, and the inner bending surface of the first bending angle 2021 abuts against the outer edge of the support base 205; the first bending angle 2021 is... The obtuse angle and the inner bending surface are arc-shaped; the gripping drive device 206 is a cylinder, the cylinder body is fixed to the bottom end of the clamping seat 1, the piston rod of the cylinder is a power shaft, one end of the piston rod passes through the middle of the clamping seat 1 and is fixed to the middle of the support seat 205 and the second mounting seat 201 in sequence; the spring 204 is installed between the support seat 205 and the clamping seat 1, one end of the spring 204 is fixed to the bottom end of the support seat 205, and the other end is fixed to the top end of the clamping seat 1.

[0084] To facilitate the horizontal clamping of the ring a, the second clamping device 3 includes four elastic pressure plates 301. The four elastic pressure plates 301 are evenly distributed circumferentially along the edge of the first bearing groove 4. One end of the elastic pressure plate 301 is fixed to the clamping seat 1, and the other end presses against the side end of the ring a. The specific structure of the elastic pressure plate 301 includes a connecting part 3011 and a clamping part 3012. The clamping part 3012 is connected to the connecting part 3011 through a V-shaped connecting plate 3013. One end of the V-shaped connecting plate 3013 extends straight to the bottom end of the clamping part 3012, and the connecting part 3011 is connected to the other end of the V-shaped connecting plate 3013 at a certain angle. The clamping part 3012 is provided with a second bending angle 3014. The inner bending surface of the second bending angle 3014 corresponds to the side end of the ring a. The inner bending surface of the second bending angle 3014 is an arc surface, which ensures that the clamping part 3012 firmly clamps the side end of the ring a.

[0085] To facilitate the installation of the elastic pressure plate 301, a fourth through hole 302 is provided on the clamping base 1. One end of the fourth through hole 302 is connected to the first bearing groove 4. The V-shaped connecting plate 3013 is located inside the fourth through hole 302. The pressing part 3012 is located on the side close to the first bearing groove 4. The connecting part 3011 is fixed to the top of the clamping base 1 on the side away from the first bearing groove 4.

[0086] In this embodiment, the clamping base 1 is also provided with a fifth through hole 303. The fifth through hole 303 is located directly below the mating surface of the two adjacent arc plates. The fifth through hole 303 can concentrate the welding gas in the hole, preventing the welding gas from spreading and affecting the welding effect. Therefore, the setting of the fifth through hole 303 is conducive to further improving the welding quality and welding efficiency of the lower surface weld of the two adjacent arc plates.

[0087] When using this manifold clamping fixture, firstly, the arc-shaped plates are spliced ​​into a ring and placed in the first bearing groove 4. During placement, the clamping part in the elastic pressure plate 301 is manually pressed, so that the clamping part is pressed against the outer edge of the ring body a, thereby achieving lateral clamping of the ring body. During the clamping process, the clamping part applies a horizontal compressive force to the arc-shaped plates toward the center, ensuring that the mating surfaces (i.e., splicing seams) between adjacent two or four arc-shaped plates can be tightly fitted, which is beneficial for subsequent welding of the weld seams between the mating surfaces of the two arc-shaped plates and helps to improve the welding quality.

[0088] Secondly, the piston rods of the cylinders retract, causing the guide rod 203 and the second mounting seat 201 to descend. The spring 204 is compressed, so that the inner bending surface of the first bending angle 2021 of the connecting rod is supported on the outer edge of the top of the support seat 205. Under the support of the support seat 205, the other end of the connecting rod 202 rotates around the pivot. At the same time, one end of the connecting rod 202 and the pressure rod 21 move outward until the upper surface of the other end of the connecting rod 202 is supported on the outer edge of the bottom of the second mounting seat 201, thus limiting the connecting rod 202. This causes the pressure head of the pressure rod 21 to press against the upper surface of the ring a, achieving longitudinal compression of the ring a and ensuring that the ring is firmly clamped.

[0089] The busbar clamping fixture of Example 4 has the following advantages:

[0090] (1) The busbar clamping fixture is equipped with a first bearing groove, a first clamping device and a second clamping device. Before welding, the ring is placed in the first bearing groove and the upper surface of the ring is clamped by the first clamping device. The side end of the ring is clamped by the second clamping device, thereby realizing the clamping of the ring to be welded. The clamping operation is simple and quick, which is conducive to improving the overall welding efficiency.

[0091] (2) The first clamping device is used to clamp the upper surface of the ring body to prevent the ring body from shifting during subsequent welding and affecting the subsequent welding quality. The second clamping device is used to clamp the side end of the ring body to give the ring body a squeezing force towards the center of the bus ring, ensuring that the two semi-circular plates or two adjacent arc plates can fit tightly together, preventing the lead wire joint from shifting during subsequent welding and causing air holes that affect the welding position, which is beneficial to improving the welding quality.

[0092] Apply any of the busbar clamping fixtures from Examples 1 to 4 above to the welding device, see Figure 7 The welding device includes a turntable 10 rotatably mounted on a tooling table, a robot (not shown in the figure), a welding head mounted on the execution end of the robot, and a flipping mechanism. The busbar clamping fixture is mounted on the turntable 10 through the flipping mechanism. In this embodiment, there are three busbar clamping fixtures, which are evenly spaced along the circumference of the turntable 10. The flipping mechanism includes a quick-change fixture, a flipping seat 101, and a driving device for flipping the flipping seat (in this embodiment, the driving device is a motor 102). The quick-change fixture includes a clamping part 103 and a mounting part 104 connected to the clamping part 103. One end of the clamping seat 1 of the busbar clamping fixture is fixed to the front end of the clamping part 103, and the mounting part 104 is fixed to the front end of the flipping seat 101. The rear end of the flipping seat 101 is fixed to the power shaft of the driving device 102.

[0093] The welding device also includes a first controller, a grating 105, a motor 102, a cylinder (i.e., a pressure rod drive device 22 or a pressure gripper drive device 206), and the grating 105, all of which are electrically connected to the first controller. The first controller is communicatively connected to the second controller in the robotic arm, and the welding head is electrically connected to the second controller. Adjacent busbar clamping fixtures are separated by a baffle 106. The grating 105 is installed at the front end of the baffle 106 and includes a light emitting end and a light receiving end. During the rotation of the turntable 10, the first controller controls the grating 105 to remain continuously open. At this time, the entire welding device is in working condition, and operators are prohibited from performing operations such as busbar clamping. If an operator touches the busbar clamping fixture, the light emitted by the grating 105 is interfered with, and a signal is sent to the first controller. The first controller then controls the indicator light in the alarm device to flash or the buzzer to sound an alarm.

[0094] To improve the versatility of the turntable 10, enabling it to accommodate different types of busbar clamping fixtures and allowing the entire welding device to meet the welding requirements of various busbar types, the welding device is also equipped with at least three proximity switches. In this embodiment, the proximity switches include: a first proximity switch 1071, a second proximity switch 1072, a third proximity switch 1073, and a fourth proximity switch 1074. The first proximity switch 1071, the second proximity switch 1072, the third proximity switch 1073, and the fourth proximity switch 1074 are mounted on the top of the flip base 101 via a third mounting base 108. Figure 14 A bolt is installed at the top of the clamping part 103 of the busbar clamping fixture. The top of the clamping part 103 of the above-mentioned busbar clamping fixture embodiments one to four are respectively equipped with a first bolt, a second bolt, a third bolt, and a fourth bolt. The installation positions of the first bolt, the second bolt, the third bolt, and the fourth bolt are different, and the first bolt to the fourth bolt correspond one-to-one with the first proximity switch to the fourth proximity switch. The first proximity switch 1071 to the fourth proximity switch 1074 are all electrically connected to the first controller, and each corresponds to the corresponding model of busbar clamping fixture and is matched with a corresponding specific welding procedure.

[0095] The steps for welding the bus ring using a welding device include: S1, clamping the bus ring using a bus ring clamping fixture;

[0096] S2. The turntable rotates, moving the clamped busbar to below the robot arm;

[0097] S3. The welding head is controlled by a robotic arm to perform welding operations on the bus ring, including: S31. Welding the upper surface weld of the bus ring with the welding head;

[0098] S32. Drive the busbar clamping fixture and rotate the busbar 180° by the flipping mechanism;

[0099] S33. The lower surface weld of the manifold is welded by the welding head. Since the clamping seat has a first through hole or a fifth through hole, the welding gas blown out by the welding head can pass through the first through hole or the fifth through hole to perform welding operation on the lower surface of the manifold.

[0100] It is understood that the above detailed description of the present invention is for illustrative purposes only and is not intended to limit the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention to achieve the same technical effects; as long as the usage requirements are met, they are all within the protection scope of the present invention.

Claims

1. A manifold clamping fixture, the manifold comprising a ring body (a), the ring body (a) being formed by splicing two semi-circular plates or at least three arc-shaped plates, the clamping fixture comprising a clamping base (1) and a bearing groove disposed at the top of the clamping base (1), characterized in that, The bearing groove includes a first bearing groove (4), which is used to support the ring body. The clamping fixture also includes a first clamping device (2) and a second clamping device (3). The first clamping device (2) is used to clamp the upper surface of the ring body (a), and the second clamping device (3) is used to clamp the side end of the ring body (a). The first clamping device (2) includes a pressure rod (21), a clamping gripper, and a clamping gripper driving device (206). The pressure rod (21) is connected to the clamping gripper driving device (206) through the clamping gripper. During the clamping operation, the clamping gripper driving device (206) drives the clamping gripper to move the pressure rod (21) toward the manifold ring, so that the pressure rod (21) clamps the upper surface of the ring body (a). The gripper includes a second mounting base (201), at least three connecting rods (202) connecting the pressure rod (21) to the second mounting base (201), a guide rod (203) connecting the second mounting base (201) to the gripper drive device (206), a spring (204), and a circular support base (205). The spring (204) is fitted onto the guide rod (203). The connecting rods (202) are evenly spaced along the outer edge of the second mounting base (201). The support base (205) is fixed to the upper part of the guide rod (203). The non-pressure head end of the pressure rod (21) is fixed to one end of the connecting rod (202). The other end is rotatably mounted on the second mounting base. The middle part of the connecting rod (202) is provided with a first bending angle (2021). The inner bending surface of the first bending angle (2021) abuts against the outer edge of the top of the support base (205). The gripping drive device (206) is a cylinder. The cylinder body is fixedly connected to the bottom end of the clamping base (1). The piston rod of the cylinder is a power shaft. One end of the piston rod passes through the middle of the clamping base (1) and is fixedly connected to the middle of the support base (205) and the second mounting base (201) in sequence. The first bending angle (2021) is an obtuse angle. The inner bending surface of the first bending angle (2021) is an arc surface. The spring (204) is installed between the support base (205) and the clamping base (1). One end of the spring (204) is fixed to the bottom end of the support base (205), and the other end is fixed to the top end of the clamping base (1).

2. The busbar clamping fixture according to claim 1, characterized in that, The second clamping device includes at least three elastic pressure plates (301), which are evenly distributed circumferentially along the edge of the first bearing groove (4). One end of the elastic pressure plate (301) is fixed to the clamping seat (1), and the other end is pressed against the side end of the ring (a).

3. The busbar clamping fixture according to claim 2, characterized in that, The elastic pressure plate (301) includes a connecting part (3011) and a pressing part (3012). The pressing part (3012) and the connecting part (3011) are connected by a V-shaped connecting plate (3013). One end of the V-shaped connecting plate (3013) extends straight to the bottom end of the pressing part (3012). The other end of the connecting part (3011) and the V-shaped connecting plate (3013) are connected at a certain angle. The pressing part (3012) is provided with a second bending angle. The inner bending surface of the second bending angle corresponds to the side end of the ring body.

4. The busbar clamping fixture according to claim 3, characterized in that, The clamping base (1) has a fourth through hole (302), one side of the fourth through hole (302) is connected to the first bearing groove (4), the V-shaped connecting plate (3013) is located in the fourth through hole (302), the pressing part (3012) is located on the side close to the first bearing groove (4), and the connecting part (3011) is fixed to the top of the clamping base on the side away from the first bearing groove (4).

5. The busbar clamping fixture according to claim 1, characterized in that, The clamping base (1) is also provided with a fifth through hole (303), which corresponds to the mating surface between the two semi-circular plates or the two adjacent arc plates.

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