Welding equipment for welding slender taillight boxes

Abstract

The present invention relates to the field of vehicle technology, and in particular to a welding device for welding slender taillight boxes. The welding device for welding slender taillight boxes includes: a split welding gun, a movable mechanism, a guide rail mechanism, and a fixing mechanism. The split welding gun is provided with a movable electrode arm; the movable mechanism includes a movable mounting base, and the movable mounting base is fixed to the split welding gun; the guide rail mechanism is provided along the length direction of the slender taillight box; the fixing mechanism includes a fixed mounting base that can move along the guide rail mechanism, and the movable mounting base can be fixed to the fixed mounting base. In the welding device for welding slender taillight boxes provided in the present application, the split welding gun and the guide rail mechanism can be quickly fixed and disassembled by the movable mounting base and the fixed mounting base. After completing the welding of one spot to be welded, the split welding gun is moved along the guide rail mechanism to the next spot to be welded for welding, which can solve the problems of high cost and poor workability in the existing process.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a welding device for welding a slender taillight box. Background Art

[0002] The taillight housing is a crucial component for mounting lighting fixtures and is an essential part of a car's body. As taillights become increasingly slender, the housing cavity is shrinking. The taillight housing needs to connect to the upper and lower tailgate panels. However, the small housing cavity creates a limited welding space, making conventional welding torches impractical.

[0003] To address the above-mentioned problem of small welding space, there are mainly arc welding and puppet welding processes. However, both existing processes have the following problems. The problems with the arc welding process are: 1. Arc welding is easy to penetrate, and the rework rate is high. 2. The arc welding weld nodules are too high, difficult to grind, and the working hours are long. 3. The cost is high, and the price of an arc welding point is twice that of resistance spot welding. 4. Arc welding requires additional welding stations and personnel. The tailgate outer panel is often divided into two sections, upper and lower, which are connected by resistance spot welding, and additional arc welding stations are required to weld the taillight box. Problems with the puppet process: 1. High cost. A puppet welding gun needs to be added for each welding point, and the puppet welding guns are integrated on the fixture. 2. It cannot be used on the same line. Each set of puppet welding fixtures is specially made and cannot be shared with other models.

[0004] Therefore, in the prior art, when the taillights are slender in shape, the adopted process has the problems of high cost and poor manufacturability. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem in the prior art that when the taillight has a slender shape, the process used has high cost and poor manufacturability.

[0006] In order to achieve the above-mentioned object, the present invention provides a welding device for welding an elongated taillight box, which comprises:

[0007] A split welding gun, wherein the split welding gun is provided with a movable electrode arm;

[0008] A movable mechanism, the movable mechanism comprising a movable mounting base, the movable mounting base being fixed to the split welding gun;

[0009] A guide rail mechanism, the guide rail mechanism being arranged along the length direction of the elongated taillight box;

[0010] The fixing mechanism includes a fixed mounting base, the fixed mounting base can move along the guide rail mechanism, and the movable mounting base can be fixed on the fixed mounting base.

[0011] Optionally, the movable mechanism further includes a telescopic rod and a cam arm, the cam arm can be rotatably disposed on the movable mounting base, and the telescopic rod can be telescopically disposed on the movable mounting base, thereby driving the cam arm to rotate and then be fixed between the telescopic rod and the fixed mounting base.

[0012] Optionally, a slot matching the cam arm is provided on the telescopic rod, and the telescopic rod can be telescopically arranged on the movable mounting base, thereby driving the cam arm to rotate and then be engaged in the slot.

[0013] Optionally, the fixing mechanism includes a locking pin, which is provided on the fixed mounting base, and the cam arm is fixed between the telescopic rod and the locking pin after being rotated.

[0014] Optionally, the movable mounting base includes a mounting portion and a clamping portion, the mounting portion is connected to the split welding gun, and the cam arm is rotatably disposed on the clamping portion.

[0015] Optionally, a fixed cavity is provided on the fixed mounting base, the clamping portion is sleeved in the fixed cavity, the locking pin is provided in the fixed cavity, and the locking pin is used to limit the cam arm after rotation.

[0016] Optionally, the clamping portion is provided with a groove matching the cam arm, and the movable mechanism further includes a cam pin, which is fixed to the clamping portion, and the cam wall can rotate around the axis of the cam pin.

[0017] Optionally, there are multiple cam arms, and the multiple cam arms are evenly distributed along the circumference of the clamping portion.

[0018] Optionally, a cavity is provided in the clamping portion, the telescopic rod is provided in the cavity, and a mounting hole communicating with the cavity is provided on the mounting portion; the movable mechanism also includes a driving device, the driving device is provided in the mounting hole, and the driving device is connected to the telescopic rod.

[0019] Optionally, the welding equipment for welding the elongated taillight box further includes a static electrode block, and the static electrode block is arranged corresponding to the moving electrode arm.

[0020] The implementation of the embodiments of the present invention has the following technical effects:

[0021] In the welding equipment for welding slender taillight housings provided by the present invention, a split welding gun is secured to a fixed mounting base via a movable mounting base. The fixed mounting base is movable on a guide rail mechanism. The movable and fixed mounting bases enable quick attachment and removal of the split welding gun and the guide rail mechanism. After completing one weld point, the split welding gun is moved along the guide rail mechanism to the next weld point for welding. After all welds are completed, the split welding gun is removed, enabling welding at weld points that are inaccessible using existing techniques. This reduces costs and improves the process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of a welding device for welding an elongated taillight box provided in an embodiment of the present invention;

[0023] Figure 2 is a cross-sectional view of a welding device for welding an elongated taillight box in Example 1 of the present invention;

[0024] Figure 3 is an exploded view of the movable mechanism and fixed structure of the welding equipment for welding the elongated taillight box in Example 1 of the present invention;

[0025] Figure 4 is a schematic diagram of a movable mechanism in a welding device for welding an elongated taillight box in Example 1 of the present invention;

[0026] Figure 5 is a schematic diagram of a fixing mechanism in a welding device for welding an elongated taillight box in Example 1 of the present invention;

[0027] Figure 6 It is a structural schematic diagram of a cam arm being clamped in a clamping groove in a welding device for welding an elongated taillight box in Example 1 of the present invention.

[0028] Description of reference numerals:

[0029] 1 - Split welding gun, 11 - Moving electrode arm, 12 - Electrode cap, 13 - Static electrode copper pad; 2 - Movable mechanism, 21 - Movable mounting base, 211 - Mounting portion, 212 - Clamping portion, 212a - Groove, 22 - Telescopic rod, 221 - Clamping slot, 23 - Cam arm, 24 - Cam pin, 25 - Driving device; 3 - Guide rail mechanism, 31 - Track; 4 - Fixing mechanism, 41 - Fixed mounting base, 42 - Slider, 43 - Locking pin; 5 - Test piece to be welded. DETAILED DESCRIPTION

[0030] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0031] refer to Figures 1 to 6The welding equipment for welding slender taillight boxes provided in this application includes: a split welding gun 1, a movable mechanism 2, a guide rail mechanism 3 and a fixing mechanism 4, wherein the split welding gun 1 is provided with a movable electrode arm 11; the movable mechanism 2 includes a movable mounting base 21, and the movable mounting base 21 is fixed to the split welding gun 1; the guide rail mechanism 3 is arranged along the length direction of the slender taillight box; the fixing mechanism 4 includes a fixed mounting base 41, and the fixed mounting base 41 can be moved along the guide rail mechanism 3, and the movable mounting base 21 can be fixed on the fixed mounting base 41.

[0032] Specifically, the movable mechanism 2 and the fixing mechanism 4 enable rapid attachment and removal of the welding gun. The split welding gun 1 can be shared across multiple vehicle models. This solves the problem of puppet welding, where each weld requires a separate welding gun, resulting in high costs and the inability to share common lines. The movable mechanism 2 is secured to the split welding gun 1 with bolts, while the fixing mechanism 4 is bolted to the slider 42. The fixed mounting base 41 is moved along the guide rail mechanism 3 via the slider 42.

[0033] The guide rail mechanism 3 includes two vertical rails 31 . Since a reverse force is generated during welding, providing two rails 31 enables the fixed mounting base 41 to move more stably along the guide rail mechanism 3 .

[0034] Optionally, the movable mechanism 2 further includes a telescopic rod 22 and a cam arm 23, wherein the cam arm 23 can be rotatably disposed on the movable mounting base 21, and the telescopic rod 22 can be telescopically disposed on the movable mounting base 21, thereby driving the cam arm 23 to rotate and then be fixed between the telescopic rod 22 and the fixed mounting base 41.

[0035] Specifically, the telescopic rod 22 drives the cam arm 23 to rotate, and the cam arm 23 is fixed between the telescopic rod 22 and the fixed mounting base 41 after rotation, thereby fixing the movable mounting base 21 and the fixed mounting base 41.

[0036] Optionally, a slot 221 matching the cam arm 23 is provided on the telescopic rod 22 , and the telescopic rod 22 can be telescopically arranged on the movable mounting base 21 , thereby driving the cam arm 23 to rotate and then be engaged in the slot 221 .

[0037] Specifically, after the cam arm 23 rotates, one end is stuck in the slot 221, and the other end of the cam arm 23 is fixed in the fixed mounting base 41. The cam arm 23 is always set in the slot 221, and the telescopic rod 22 is moved to the left. Figure 6 The telescopic rod 22 is moved to the right side, and the telescopic rod 22 is vertically snapped into the draw-in slot 221. When unlocking is required, the telescopic rod 22 is moved to the left side, and the telescopic rod 22 is withdrawn from the draw-in slot 221, and only a part of the structure is arranged in the draw-in slot 221.

[0038] Optionally, the fixing mechanism 4 includes a locking pin 43 , and the locking pin 43 is provided on the fixed mounting base 41 . The cam arm 23 is fixed between the telescopic rod 22 and the locking pin 43 after being rotated.

[0039] Specifically, the cam arm 23 is locked on the locking pin 43 after rotation, thereby limiting the position of the cam arm 23 .

[0040] Optionally, the movable mounting base 21 includes a mounting portion 211 and a clamping portion 212 , the mounting portion 211 is connected to the split welding gun 1 , and the cam arm 23 is rotatably disposed on the clamping portion 212 .

[0041] Specifically, the mounting portion 211 is vertically connected to the clamping portion 212 , and the cam arm 23 can rotate toward the center of the clamping portion 212 , thereby clamping the telescopic rod 22 located at the center of the clamping portion 212 .

[0042] Optionally, a fixing cavity is provided on the fixed mounting base 41 , the clamping portion 212 is sleeved in the fixing cavity, the locking pin 43 is provided in the fixing cavity, and the locking pin 43 is used to limit the cam arm 23 after rotation.

[0043] Specifically, the shape of the clamping portion 212 matches the shape of the fixing cavity, and both have circular cross-sections. After the cam arm 23 rotates, the locking pin 43 can block the cam arm 23, so that the cam arm 23 is fixed between the telescopic rod 22 and the locking pin 43.

[0044] Optionally, a groove 212 a matching the cam arm 23 is provided on the clamping portion 212 , and the movable mechanism 2 further includes a cam pin 24 , which is fixed on the clamping portion 212 , and the cam wall can rotate around the axis of the cam pin 24 .

[0045] Specifically, the cam arm 23 rotates around the cam pin 24 along the groove 212 a , and the cam pin 24 is inserted into a hole defined in the mounting portion 211 .

[0046] Optionally, there are multiple cam arms 23 , and the multiple cam arms 23 are evenly distributed along the circumference of the clamping portion 212 .

[0047] Specifically, providing a plurality of cam arms 23 can facilitate better fixing of the movable mounting base 21 on the fixed mounting base 41 , and the groove 212 a is annular in shape, which facilitates fixing of the plurality of cam arms 23 in the annular groove 212 a .

[0048] Optionally, a cavity is provided in the clamping portion 212, the telescopic rod 22 is provided in the cavity, and a mounting hole connected to the cavity is provided on the mounting portion 211; the movable mechanism 2 also includes a driving device 25, the driving device 25 is provided in the mounting hole, and the driving device 25 is connected to the telescopic rod 22.

[0049] Specifically, the drive device 25 can drive the telescopic rod 22 to extend and retract along the axis of the mounting portion 211, thereby driving the cam arm 23 on the telescopic rod 22 to rotate. The drive device 25 is a cylinder or a motor. When the drive device 25 is a motor, the telescopic rod 22 serves as a power shaft connected to the motor via a screw rod. When the drive device 25 is a cylinder, the telescopic rod 22 serves as a cylinder rod.

[0050] Optionally, the welding equipment for welding the elongated taillight box further includes a static electrode block, and the static electrode block is arranged corresponding to the moving electrode arm 11 .

[0051] Specifically, the split welding gun 1 only has a moving electrode arm 11 and an electrode cap 12. The electrode cap 12 is located at the top of the electrode arm, and the static electrode copper pad 13 is fixed on the fixture. The test piece 5 to be welded (i.e., the tailgate outer panel and the taillight box) is located between the static electrode copper pad 13 and the electrode cap 12.

[0052] The static electrode copper pad 13 and electrode cap 12 are separated, significantly different from conventional welding guns. The split welding gun 1 features only the moving electrode arm 11 and electrode cap 12, while the static electrode consists solely of the static electrode copper pad 13. This pad 13 is fixed to a fixture and connected to the welding gun's control cabinet via wires. This welding gun mechanism enables welding in the confined spaces of slender taillight boxes, and its lightweight design facilitates manual operation.

[0053] The fixture is arranged on the inner side of the tailgate outer panel, the static electrode block is arranged on the fixture, and is connected to the welding gun control cabinet by a wire.

[0054] When assembling the welding equipment for welding slender taillight boxes provided by the present invention, the cam pin 24 assembles the cam arm 23 and the movable mounting base 21 together. The cam arm 23 and the cam pin 24 are clearance-fitted and can rotate around the cam pin 24. The cam pin 24 and the movable mounting base 21 are interference-fitted and play a fixing role. The movable mechanism 2 has a total of three sets of cam pins 24 and cam arms 23, which are evenly distributed on the movable mounting base 21. The telescopic rod 22 is driven by the drive device 25. The drive device 25 is fixed to the movable mounting base 21. The fixing mechanism 4 includes a locking pin 43 and a fixed mounting base 41. The locking pin 43 and the fixed mounting base 41 are interference-fitted. There are also three locking pins 43 corresponding to the three sets of cam arms 23.

[0055] The welding equipment for welding slender taillight boxes of the present invention is operated as follows: during welding, the clamping portion 212 in the movable mechanism 2 is inserted into the fixed cavity of the fixing mechanism 4. The driving device 25 is started, and the movable mechanism 2 and the fixing mechanism 4 are fixed together to realize the positioning and fixation of the welding gun. After locking, the electrode cap 12 of the split welding gun 1 is 30 mm in the vertical direction of the plane of the to-be-welded point. The split welding gun 1 is started to weld. After welding is completed, the split welding gun 1 is moved along the guide rail mechanism 3 to the next to-be-welded point for welding. After all the welding points are completed, the driving device 25 is started to unlock, thereby completing the unlocking of the split welding gun 1 and the guide rail mechanism 3.

[0056] In summary, in the welding equipment for welding elongated taillight housings provided by the present invention, the split welding gun 1 is secured via a movable mounting base 21 and a fixed mounting base 41. The fixed mounting base 41 is movable on the guide rail mechanism 3. The movable mounting base 21 and the fixed mounting base 41 enable quick attachment and removal of the split welding gun 1 from the guide rail mechanism 3. After completing one weld spot, the split welding gun 1 is moved along the guide rail mechanism 3 to the next weld spot for welding. After all welds are completed, the split welding gun 1 is removed, resulting in excellent welding results and low costs.

[0057] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0058] Furthermore, the present invention uses terms such as "first" and "second" to describe various types of information, but such information should not be limited to these terms. These terms are merely used to distinguish information of the same type from one another. For example, "first" information could also be referred to as "second" information, and similarly, "second" information could also be referred to as "first" information without departing from the scope of the present invention.

[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A welding device for welding slender taillight boxes, characterized in that: include: A split welding gun, wherein the split welding gun is provided with a movable electrode arm; A movable mechanism, the movable mechanism comprising a movable mounting base, the movable mounting base being fixed to the split welding gun; A guide rail mechanism, the guide rail mechanism being arranged along the length direction of the elongated taillight box; A fixing mechanism, the fixing mechanism comprising a fixed mounting base, the fixed mounting base being movable along the guide rail mechanism, and the movable mounting base being fixed to the fixed mounting base; The movable mechanism further includes a telescopic rod and a cam arm, wherein the cam arm is rotatably disposed on the movable mounting base, and the telescopic rod is telescopically disposed on the movable mounting base, thereby driving the cam arm to rotate and then be fixed between the telescopic rod and the fixed mounting base, thereby fixing the movable mounting base and the fixed mounting base; The fixing mechanism includes a locking pin, which is arranged on the fixed mounting base. The cam arm is fixed between the telescopic rod and the locking pin after rotation.

2. The welding equipment for welding elongated tail light boxes according to claim 1, characterized in that: The telescopic rod is provided with a slot matching the cam arm. The telescopic rod can be telescopically arranged on the movable mounting base, thereby driving the cam arm to rotate and then be locked in the slot.

3. The welding equipment for welding an elongated taillight box according to claim 1, characterized in that: The movable mounting base includes a mounting portion and a clamping portion, the mounting portion is connected to the split welding gun, and the cam arm is rotatably arranged on the clamping portion.

4. The welding equipment for welding an elongated tail light box according to claim 3, characterized in that: A fixing cavity is provided on the fixed installation base, the clamping portion is sleeved in the fixing cavity, the locking pin is provided in the fixing cavity, and the locking pin is used to limit the cam arm after rotation.

5. The welding equipment for welding an elongated tail light box according to claim 3, characterized in that: The clamping portion is provided with a groove matching the cam arm. The movable mechanism further comprises a cam pin, which is fixed on the clamping portion. The cam arm can rotate around the axis of the cam pin.

6. The welding equipment for welding an elongated tail light box according to claim 3, characterized in that: There are multiple cam arms, and the multiple cam arms are evenly distributed along the circumference of the clamping portion.

7. The welding equipment for welding an elongated tail light box according to claim 3, characterized in that: A cavity is provided in the clamping portion, the telescopic rod is provided in the cavity, and a mounting hole communicating with the cavity is provided on the mounting portion; the movable mechanism also includes a driving device, the driving device is provided in the mounting hole, and the driving device is connected to the telescopic rod.

8. The welding equipment for welding an elongated tail light box according to claim 1, characterized in that: The welding equipment for welding the elongated taillight box further includes a static electrode block, which is arranged corresponding to the moving electrode arm.

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