A kind of acquisition wire harness welding positioning mechanism and acquisition wire harness welding device

Abstract

The utility model relates to the field of collection wire harness welding, especially a kind of collection wire harness welding positioning mechanism and collection wire harness welding device, including, installation component, installation component includes base plate, and the through port is set in base plate middle part;Drive component, drive component includes the cylinder being set on base plate;Compression assembly, compression assembly includes the copper nozzle being fixed on cylinder, and the lower end of copper nozzle is set through the square hole of the radial both ends of copper nozzle, and the width of square hole is greater than the width of the collection wire harness to be welded, and the width of square hole is less than the width of the collection wire harness lug to be welded, and the through hole is set between square hole and copper nozzle upper end;Original collection wire harness compression tool is replaced by the compression mechanism of cylinder and copper nozzle combination, for different power battery module, only need to replace the copper nozzle suitable, welding of all power battery module can be realized, the scope of application is wide, need not to design special collection wire harness compression tool, overall structure is simple, and reliability is high, and maintenance cost is low.

Description

Technical Field

[0001] This utility model relates to the field of wire harness welding, and in particular to a wire harness welding positioning mechanism and a wire harness welding device. Background Technology

[0002] There are two process routes for welding the power battery acquisition harness:

[0003] The first process route involves first soldering the acquisition harness to the busbar, and then soldering the busbar. This process route has two forms: one is an integrated harness connected to a flexible printed circuit board, which is more expensive; the other is soldering the harness to the busbar without a fixed frame, which requires the creation of special busbar soldering fixtures to complete the soldering. The design of the soldering fixtures is difficult and the reliability is insufficient.

[0004] The second process route involves welding the busbar first and then welding the acquisition wire harness. This process route is less difficult and has lower costs, so it can be preferred. Specifically, before entering the welding equipment, a special clamping fixture is used to clamp the acquisition wire harness. After entering the welding equipment, the servo axis drives the CCD to take pictures and locate the welding position of the acquisition wire harness. Under the guidance of the CCD, the servo axis with the galvanometer welding head performs single-point laser welding on the acquisition wire harness.

[0005] Although the second process route is less difficult and less expensive, different power battery modules require different acquisition harness clamping fixtures. The clamping fixtures are complex to design, have poor reliability, and are expensive to maintain. Utility Model Content

[0006] Therefore, the technical problem to be solved by this utility model is: how to design a widely applicable, simple and reliable acquisition wire harness clamping and positioning mechanism.

[0007] The above-mentioned technical problems are solved by the following technical solution: This utility model proposes a wire harness welding and positioning mechanism, including: a mounting component, the mounting component including a base plate, the base plate having a through port in the middle; a driving component, the driving component including a cylinder vertically mounted on the base plate; and a clamping component, the clamping component including a copper nozzle fixed on the cylinder, the lower end of the copper nozzle having a square hole penetrating both ends of the copper nozzle radially, the width of the square hole being greater than the width of the wire harness to be welded, and the width of the square hole being less than the width of the wire lug of the wire harness to be welded, and a through hole being provided between the square hole and the upper end of the copper nozzle.

[0008] In a preferred embodiment of the wire harness welding positioning mechanism of this utility model: the clamping component has two sets, the driving component is correspondingly set to two sets, and the two sets of clamping components and the two sets of driving components are connected one-to-one.

[0009] In a preferred embodiment of the wire harness welding positioning mechanism of this utility model: the driving component further includes a first L-shaped plate vertically fixed on the base plate, the cylinder vertically fixed on the first L-shaped plate, a second L-shaped plate vertically fixed on the cylinder, and the copper nozzle fixed on the second L-shaped plate.

[0010] In a preferred embodiment of the wire harness welding positioning mechanism of this utility model: the copper nozzle includes a horizontally arranged transition section, the upper end of the transition section extends upward integrally with a mounting part, the second L-shaped plate is provided with a mounting groove adapted to the mounting part, and the mounting part is fixed in the mounting groove.

[0011] In a preferred embodiment of the wire harness welding positioning mechanism of this utility model: a pressing part is integrally extended downward from the lower end of the transition section. The pressing part is in the shape of a frustum with a larger upper part and a smaller lower part. The square hole is disposed at the lower end of the pressing part and passes through both radial ends of the pressing part. The through hole is disposed between the square hole and the upper end face of the transition section.

[0012] In a preferred embodiment of the wire harness welding positioning mechanism of this utility model: the horizontal part of the first L-shaped plate is fixed to the base plate by bolts, the vertical part of the first L-shaped plate is connected to the cylinder by bolts, the cylinder is detachably connected to the vertical part of the second L-shaped plate by bolts, the mounting groove is provided at the horizontal part of the second L-shaped plate, and the mounting part is fixed in the mounting groove by bolts.

[0013] In a preferred embodiment of the wire harness welding positioning mechanism of this utility model: the base plate is a horizontally arranged rectangular plate, the through port is located in the middle of the base plate, and the cylinder, the second L-shaped plate and the copper nozzle are all located directly above the through port.

[0014] In a preferred embodiment of the wire harness welding and positioning mechanism of this utility model, the height of the square hole is greater than the height of the wire harness to be welded.

[0015] The advantages of this utility model are as follows: the original acquisition wire harness clamping fixture is replaced by a clamping mechanism consisting of a cylinder and a copper nozzle. For different power battery modules, only the appropriate copper nozzle needs to be replaced to achieve welding of all power battery modules. It has a wide range of applications, does not require the design of a special acquisition wire harness clamping fixture, has a simple overall structure, high reliability, and low maintenance cost.

[0016] This utility model also proposes a wire harness welding device, including a wire harness welding positioning mechanism and a base frame, wherein the base plate is fixed on the base frame.

[0017] In a preferred embodiment of the wire harness welding device of this utility model: multiple sets of mounting plates are arranged at the lower end of the base frame, and insertion rods are threadedly connected to the mounting plates. Insertion holes corresponding to the positions of the insertion rods are provided on the base plate, and the insertion rods are inserted into the insertion holes.

[0018] The advantages of this utility model are as follows: The acquisition wire harness welding positioning mechanism adopts an insertion structure of insertion rod and insertion hole for installation and fixation, which is convenient for disassembly and assembly, and the overall structure is simple. After the acquisition wire harness welding positioning mechanism is adopted in the welding device, only the appropriate copper nozzle needs to be replaced for different power battery modules to achieve welding of all power battery modules. It has a wide range of applications, does not require the design of special acquisition wire harness clamping fixtures, has a simple overall structure, high reliability, and low maintenance cost. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this utility model and are not intended to limit the scope of this utility model. Wherein:

[0020] Figure 1 A schematic diagram of the overall structure of the acquisition wire harness welding positioning mechanism is shown;

[0021] Figure 2 A schematic diagram of the copper nozzle structure is shown;

[0022] Figure 3 A schematic diagram of another form of copper nozzle structure is shown;

[0023] Figure 4 A schematic diagram of the drive component is shown;

[0024] Figure 5 A schematic diagram of the wire harness welding device is shown.

[0025] Figure 6 A schematic diagram of the substrate mounting structure is shown;

[0026] Figure 7 A schematic diagram of the welding device during welding is shown. Detailed Implementation

[0027] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0028] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0029] Example 1, referring to Figure 1 , Figure 2 and Figure 4 This embodiment provides a wire harness welding positioning mechanism, including,

[0030] Mounting component 1 includes a base plate 11, which is specifically a horizontally arranged rectangular plate that can be mounted onto a welding device. A through port 12 is provided in the middle of the base plate 11 to allow welding laser scanning and clamping components 3 to pass through to the welding position.

[0031] Drive component 2, which includes a cylinder 21 vertically mounted on the base plate 11, drives the clamping component 3 to move vertically so that the clamping component 3 clamps the acquisition wire harness or releases the clamping.

[0032] The clamping assembly 3 includes a copper nozzle 31 fixed to the cylinder 21. The copper nozzle 31 is made of beryllium bronze. The cylinder 21 drives the copper nozzle 31 to move downward, pressing the acquisition wire harness tightly onto the busbar. Specifically, the lower end of the copper nozzle 31 is provided with a square hole 311 that passes through both ends of the copper nozzle 31 radially. The width of the square hole 311 is greater than the width of the acquisition wire harness to be welded, and the width of the square hole 311 is less than the width of the wire lug of the acquisition wire harness to be welded. During clamping, the acquisition wire harness is placed inside the square hole 311. The two sides of the square hole 311 at the lower end of the copper nozzle 31 press against the two sides of the wire lug at the end of the acquisition wire harness, pressing the wire lug of the acquisition wire harness tightly onto the busbar for welding. A through hole 312 is provided between the square hole 311 and the upper end of the copper nozzle 31 for the scanning laser to pass through to scan the welding position and for the welding laser to pass through to weld the welding position. At the same time, some of the welding fumes are discharged from the through hole 312, reducing the light obstruction of welding fumes during laser welding.

[0033] By replacing the original acquisition harness clamping fixture with a clamping mechanism consisting of cylinder 21 and copper nozzle 31, welding of the power battery module can be achieved simply by replacing the copper nozzle 31 with a suitable one for different power battery modules. This has a wide range of applications, does not require the design of a dedicated acquisition harness clamping fixture, has a simple overall structure, high reliability, and low maintenance costs.

[0034] Furthermore, in order to further reduce the light obstruction caused by welding fumes during laser welding, the height of the square hole 311 is greater than the height of the acquisition wire bundle to be welded, so that there is a gap between the acquisition wire bundle and the hole wall of the square hole 311, allowing the welding fumes to be discharged.

[0035] Furthermore, refer to Figure 1 The clamping component 3 has two sets, and the driving component 2 is set to two sets accordingly. The two sets of clamping components 3 and the two sets of driving components 2 are connected one-to-one.

[0036] The clamping assembly 3 is designed in two sets, which can flexibly switch between 1-weld-1 and 1-weld-2. Specifically, when the welding equipment moves above the welding position, the PLC determines the welding method based on the CCD6 data. When the ΔX / ΔY values ​​of the two welding points exceed the set value (i.e., when welding one welding point, it is not possible to weld the other welding point simultaneously), single-point welding with a single copper nozzle 31 is performed, and the cylinder 21 drives one of the copper nozzles 31 to retract upwards. When the ΔX / ΔY values ​​of the two welding points are within the set value, double-point welding with two copper nozzles 31 is performed, and the two cylinders 21 move downwards to clamp the acquisition wire harnesses at the two welding points for welding. Using this welding method, the welding cycle time is high. Compared with the single copper nozzle 31 1-weld-1 method, the double copper nozzle 31 1-weld-2 method increases the cycle time by 40%.

[0037] Example 2, refer to Figure 1 , Figure 2 and Figure 4 The drive assembly 2 also includes a first L-shaped plate 22 vertically fixed to the base plate 11, a cylinder 21 vertically fixed to the first L-shaped plate 22, a second L-shaped plate 23 vertically fixed to the cylinder 21, and a copper nozzle 31 fixed to the second L-shaped plate 23. Specifically, the horizontal portion of the first L-shaped plate 22 is fixed to the base plate 11 by bolts, the vertical portion of the first L-shaped plate 22 is connected to the cylinder 21 by bolts, and the cylinder 21 is detachably connected to the vertical portion of the second L-shaped plate 23 by bolts. The copper nozzle 31 includes a horizontally arranged transition section 313, the upper end of which is integrally provided with an mounting portion 314. The second L-shaped plate 23 is provided with a mounting groove 231 adapted to the mounting portion 314, the mounting portion 314 is fixed in the mounting groove 231, the mounting groove 231 is located at the horizontal portion of the second L-shaped plate 23, and the mounting portion 314 is fixed in the mounting groove 231 by bolts.

[0038] The entire acquisition harness welding and positioning mechanism is assembled by bolts, making installation convenient and quick. In particular, for the installation of the copper nozzle 31, after the mounting part 314 on the copper nozzle 31 is placed in the mounting groove 231, the mounting part 314 and the inner wall of the mounting groove 231 can be fixed by a single bolt, thus achieving the installation and fixation of the copper nozzle 31. When the copper nozzle 31 needs to be replaced for different power battery modules, only a single bolt needs to be removed and installed, making replacement convenient and quick.

[0039] Furthermore, refer to Figure 2 The lower end of the transition section 313 extends downward integrally with a pressing part 315. The pressing part 315 is a frustum-shaped structure with a larger upper part and a smaller lower part. A square hole 311 is provided at the lower end of the pressing part 315 and passes through both radial ends of the pressing part 315. The hole 312 is provided between the square hole 311 and the upper end face of the transition section 313.

[0040] In some implementations, refer to Figure 3 The copper nozzle 31 can also take another form; specifically, the clamping part 315 of the copper nozzle 31 can also take another form. The transition section 313 and the mounting part 314 are the same as described above. Specifically, the upper part of the clamping part 315 is a frustum-shaped cone, wider at the top and narrower at the bottom, and the lower part is a rectangular block. The width of the lower part of the clamping part 315 is slightly larger than the width of the welding position on the ear side of the wire harness to be welded. The clamping part is provided with a through hole 312a extending from the bottom end face to the top end face. The overall shape of the through hole 312a is consistent with the shape of the clamping part 315. When connected, the lower end of the clamping part 315 presses against the welding position of the wire harness ear to be welded. The welding position is located inside the through hole 312a. Since the width of the lower end of the clamping part 315 is only slightly larger than the width of the welding position on the side of the wire harness ear to be welded, there is no need to set a notch for the wire harness to pass through at the side wall of the through hole at the lower end of the clamping part 315. At the same time, multiple through holes 312b are provided at the lower side wall of the clamping part 315 for welding fumes to be discharged. Specifically, through holes 312b are provided on all four sides of the lower part of the clamping part 315.

[0041] Furthermore, refer to Figure 1 The substrate 11 is a horizontally arranged rectangular plate. The port 12 is located in the middle of the substrate 11. The cylinder 21, the second L-shaped plate 23 and the copper nozzle 31 are all located directly above the port 12, which is used to allow the copper nozzle 31 to pass through vertically during welding.

[0042] Example 3, referring to Figure 1 , Figures 5 to 7A wire harness welding device includes a wire harness welding positioning mechanism, a base frame 4, a base plate 11 fixed on the base frame 4, a galvanometer system 5, a CCD 6, a dust collection device 7, an air knife 8, a protective cover 9, etc. The entire welding device is integrated on a servo axis and is driven to move by the servo axis. The welding process is as follows: in the previous process, the wire harness is installed into the limiting buckle; the workpiece enters the welding chamber; the lifting mechanism in the welding chamber lifts and clamps the workpiece; the CCD 6 collects the bus position and transmits the position data to the PLC; the PLC controls the servo axis to move the galvanometer to the first welding position. Above the welding position, the PLC determines the welding method based on the CCD6 data. When the ΔX / ΔY values ​​of the two welding points exceed the set values, single-point welding with a single copper nozzle 31 is performed, and one of the copper nozzles 31 retracts. When the ΔX / ΔY values ​​of the two welding points are within the set values, double-point welding with two copper nozzles 31 is performed. Above the welding position, laser ranging is performed, and the PLC feeds back the measurement results to the servo axis. The servo axis reaches the compensated welding position, the copper nozzle 31 clamps the acquisition wire harness, the galvanometer welding head welds according to the welding parameters, and the servo axis moves to the next welding position. This cycle is repeated multiple times to complete the welding.

[0043] Furthermore, refer to Figure 6 The lower end of the base frame 4 is provided with multiple sets of mounting plates 41. The mounting plates 41 are threaded with insertion rods 42. The base plate 11 is provided with insertion holes 111 corresponding to the positions of the insertion rods 42. The insertion rods 42 are inserted into the insertion holes 111.

[0044] Specifically, multiple mounting plates 41 are installed on three sides of the lower end of the base frame 4 (the fourth side is limited and not suitable for installation). Insert rods are threaded onto the mounting plates 41 and inserted into the base plate 11 to fix the base plate 11, thereby realizing the installation of the entire acquisition wire harness welding and positioning mechanism. The installation method is simple and easy to disassemble.

[0045] When welding power battery acquisition harnesses using the above welding equipment, the following results are achieved: MTTR (Mean Time To Repair) < 5 min, MTBF (Mean Time Between Failures) ≥ 500 h, and FTQ (First-Time Acceptance Rate) ≥ 99.5%.

[0046] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.

Claims

1. A wire harness welding positioning mechanism, characterized in that: include, Mounting assembly (1), the mounting assembly (1) includes a base plate (11), the base plate (11) having a passage (12) in the middle; The drive assembly (2) includes a cylinder (21) vertically disposed on the base plate (11); A clamping assembly (3) includes a copper nozzle (31) fixed on a cylinder (21). The lower end of the copper nozzle (31) is provided with a square hole (311) penetrating both radial ends of the copper nozzle (31). The width of the square hole (311) is greater than the width of the wire harness to be welded and less than the width of the wire lug of the wire harness to be welded. A through hole (312) is provided between the square hole (311) and the upper end of the copper nozzle (31).

2. The acquisition wire harness welding positioning mechanism according to claim 1, characterized in that: The clamping assembly (3) has two sets, and the driving assembly (2) is set to two sets accordingly, and the two sets of clamping assemblies (3) and the two sets of driving assemblies (2) are connected one-to-one.

3. The acquisition wire harness welding positioning mechanism according to claim 2, characterized in that: The drive assembly (2) further includes a first L-shaped plate (22) vertically fixed on the base plate (11), the cylinder (21) vertically fixed on the first L-shaped plate (22), a second L-shaped plate (23) vertically fixed on the cylinder (21), and the copper nozzle (31) fixed on the second L-shaped plate (23).

4. The acquisition wire harness welding positioning mechanism according to claim 3, characterized in that: The copper nozzle (31) includes a horizontally arranged transition section (313), and an installation part (314) is integrally extended upward from the upper end of the transition section (313). The second L-shaped plate (23) is provided with an installation groove (231) adapted to the installation part (314), and the installation part (314) is fixed in the installation groove (231).

5. The acquisition wire harness welding positioning mechanism according to claim 4, characterized in that: The lower end of the transition section (313) is integrally provided with a pressing part (315) extending downward. The pressing part (315) is in the shape of a frustum with a larger upper part and a smaller lower part. The square hole (311) is provided at the lower end of the pressing part (315) and the square hole (311) penetrates both ends of the pressing part (315) radially. The through hole (312) is provided between the square hole (311) and the upper end face of the transition section (313).

6. The acquisition wire harness welding positioning mechanism according to claim 5, characterized in that: The horizontal portion of the first L-shaped plate (22) is fixed to the base plate (11) by bolts. The vertical portion of the first L-shaped plate (22) is connected to the cylinder (21) by bolts. The cylinder (21) is detachably connected to the vertical portion of the second L-shaped plate (23) by bolts. The mounting groove (231) is located at the horizontal portion of the second L-shaped plate (23). The mounting part (314) is fixed in the mounting groove (231) by bolts.

7. The acquisition wire harness welding positioning mechanism according to claim 6, characterized in that: The substrate (11) is a horizontally arranged rectangular plate, the through port (12) is located in the middle of the substrate (11), and the cylinder (21), the second L-shaped plate (23) and the copper nozzle (31) are all located directly above the through port (12).

8. The acquisition wire harness welding positioning mechanism according to claim 6 or 7, characterized in that: The height of the square hole (311) is greater than the height of the wire harness to be welded.

9. A device for collecting wire harness welding data, characterized in that: Including the acquisition wire harness welding positioning mechanism according to any one of claims 1 to 8, it further includes, The base frame (4) is on which the base plate (11) is fixed.

10. The wire harness welding device according to claim 9, characterized in that: The lower end of the base frame (4) is provided with multiple sets of mounting plates (41), and the mounting plates (41) are threaded with insert rods (42). The base plate (11) is provided with insert holes (111) corresponding to the position of the insert rods (42), and the insert rods (42) are inserted into the insert holes (111).

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