License plate welding apparatus and welding method thereof

Abstract

This invention relates to the field of automotive welding technology, specifically disclosing a license plate welding device and its welding method. The license plate welding device includes a base, a first positioning mechanism, two first clamping mechanisms, a second positioning mechanism, and a welding robot. The first positioning mechanism includes a positioning post and a positioning pin; the positioning post is mounted on the base, and the positioning pin is disposed on the positioning post; the first clamping mechanisms are mounted on the base; the second positioning mechanism includes a support plate and a positioning plate, the support plate being mounted on the base; the positioning plate is disposed on the support plate, and the positioning plate has a positioning hole for placing a welding nut; the welding robot is used to weld the welding nut to the license plate. This invention features a simple welding process and precise welding, improving production efficiency and yield.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile welding, in particular to a license plate welding device and a welding method thereof. BACKGROUND

[0002] In the automobile manufacturing industry, welding process is one of the four processes of automobile manufacturing; different vehicle models correspond to different types of license plates, and different license plates require different welding methods, so different vehicle models of license plates require different welding equipment and corresponding operators, which is high in cost and occupies a large space in the factory building.

[0003] At the same time, each license plate needs to be welded with multiple nuts, and the existing nut welding equipment only has welding function, so at least two operators must be configured, one of whom places a welding nut on the welding equipment, and the other lifts the license plate, the operator welds the welding nut to the license plate, then the other operator temporarily lifts the license plate away from the welding equipment, the operator continues to place the next welding nut on the welding equipment, and repeats the above steps until all nuts are welded, the whole process is very tedious, and the operator is required to be high in difficulty and low in precision, resulting in low production efficiency and low yield. SUMMARY

[0004] The purpose of the present application is to provide a license plate welding device and a welding method thereof, which has simple welding process and high welding precision, improves production efficiency and yield, and can meet the needs of spot welding and nut welding at the same time.

[0005] In order to solve the above technical problems, the present application provides a license plate welding device, which comprises:

[0006] A base, the base has a front side facing the operator;

[0007] A first positioning mechanism, the first positioning mechanism comprises a positioning column and a positioning pin; the positioning column is installed on the base, and the positioning pin is arranged on the positioning column;

[0008] Two first clamping mechanisms, the first clamping mechanism is installed on the base, and the two first clamping mechanisms are respectively located on the left and right sides of the base;

[0009] A second positioning mechanism, the second positioning mechanism comprises a support plate and a positioning plate, the support plate is installed on the base; the positioning plate is arranged on the support plate, and the positioning plate is provided with a positioning hole for placing a welding nut;

[0010] A welding robot, the welding robot is located on the rear side of the base, and is used for welding the welding nut and the license plate.

[0011] Preferably, the first clamping mechanism comprises a first cylinder, a first clamping plate, a first abutting plate and a first abutting block, the first abutting plate is installed on the base, the first abutting block is installed on the first abutting plate, the first clamping plate is hinged with the first abutting plate, one end of the first clamping plate abuts with the first abutting block, the other end of the first clamping plate is connected with the telescopic rod of the first cylinder, and the first cylinder is installed on the first abutting plate.

[0012] Preferably, a second clamping mechanism is further included, the second clamping mechanism is installed on the base, and the second clamping mechanism is located at the rear side of the base.

[0013] Preferably, two second positioning mechanisms are arranged, and the two second positioning mechanisms are arranged at intervals.

[0014] Preferably, a detection plate is further included, the detection plate is located between the two support plates, one end of the positioning plate is connected with the support plate, and the other end of the positioning plate is connected with the detection plate.

[0015] Preferably, three second clamping mechanisms are arranged, and the three second clamping mechanisms are arranged in one-to-one correspondence with the two support plates and the detection plate.

[0016] Preferably, each of the second clamping mechanisms comprises a second cylinder, a second clamping plate, a second abutting plate and a second abutting block, the three second abutting plates are installed in one-to-one correspondence with the two support plates and the detection plate, the second abutting block is installed on the second abutting plate, the second clamping plate is hinged with the second abutting plate, one end of the second clamping plate abuts with the second abutting block, the other end of the second clamping plate is connected with the telescopic rod of the second cylinder, and the second cylinder is installed on the second abutting plate.

[0017] Preferably, the detection plate is provided with a first sensing mechanism, and the first sensing mechanism is used for detecting a welding nut of a positioning hole.

[0018] Preferably, a plurality of moving mechanisms are further included, the moving mechanisms are arranged in one-to-one correspondence with the first positioning mechanism and the first clamping mechanism, the moving mechanism comprises a guide rail, a linear module, a moving plate and a driving motor, the guide rail and the linear module are arranged in parallel and at intervals on the base, and the moving plate is connected with the guide rail and the linear module respectively; the driving motor is connected with the linear module.

[0019] Preferably, the base is provided with a plurality of second sensing mechanisms arranged at intervals, and the second sensing mechanisms are used for detecting a license plate.

[0020] The application further provides a welding method comprising the following steps:

[0021] Placing the welding nut to the license plate welding equipment standby;

[0022] Transporting the license plate to the license plate welding equipment, and positioning the license plate;

[0023] Obtaining the license plate type, determining the welding type and corresponding clamping;

[0024] If the license plate corresponds to the nut welding type, obtaining whether the welding nut is in place, and if the welding nut is in place, welding the welding nut and the license plate;

[0025] If the license plate corresponds to the spot welding type, spot welding the license plate;

[0026] After welding, loosen the clamping, transport the license plate out of the license plate welding equipment, transport the un-welded license plate into the cycle above steps.

[0027] The present application has the following beneficial effects:

[0028] The license plate welding equipment of the present application comprises a first positioning mechanism, which can accurately support and position the license plate, avoiding the operator from lifting the license plate for a long time during the welding process, saving the burden of the operator and reducing the operation difficulty; and a first clamping mechanism is arranged to clamp the license plate, avoiding the movement of the license plate during the welding process, improving the accuracy and reliability of the welding; a second positioning mechanism is particularly arranged, which can position the welding nut and cooperate with the first positioning mechanism to pair the plurality of welding nuts with the license plate at one time, and the welding is carried out by the welding robot at one time, the process flow is simple, the operator is convenient to operate, the difficulty is low, the production efficiency is high, and the welding is accurate. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a structural schematic view of the license plate welding equipment provided by the embodiment of the present application;

[0030] Figure 2 is a partial enlarged view of the license plate welding equipment provided by the embodiment of the present application;

[0031] Figure 3 is a structural schematic view of the first clamping mechanism provided by the embodiment of the present application;

[0032] Figure 4 is a structural schematic view of the second positioning mechanism provided by the embodiment of the present application.

[0033] Reference signs:

[0034] 1, base; 2, first positioning mechanism; 21, positioning column; 22, positioning pin; 3, first clamping mechanism; 31, first cylinder; 32, first clamping plate; 33, first abutting plate; 34, first abutting block; 4, second positioning mechanism; 41, support plate; 42, positioning plate; 421, connecting plate; 422, placing plate; 43, positioning hole; 5, second clamping mechanism; 6, detection plate; 7, first sensing mechanism. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0037] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] Reference is made to Figure 1 and Figure 2As shown in the drawings, the preferred embodiment of the present application provides a license plate welding device, which comprises a base 1, a first positioning mechanism 2, two first clamping mechanisms 3, a second positioning mechanism 4 and a welding robot, the base 1 has a front side facing the operator; the first positioning mechanism 2 comprises a positioning column 21 and a positioning pin 22, the positioning column 21 is installed on the base 1, and the positioning pin 22 is arranged on the positioning column 21; the first clamping mechanism 3 is installed on the base 1, and the two first clamping mechanisms 3 are respectively located on the left and right sides of the base 1; the second positioning mechanism 4 comprises a support plate 41 and a positioning plate 42, the support plate 41 is installed on the base 1; the positioning plate 42 is arranged on the support plate 41, and the positioning plate 42 is provided with a positioning hole 43 for placing a welding nut; the welding robot is located on the rear side of the base 1 and is used for welding the welding nut and the license plate.

[0039] The use process of the above-mentioned license plate welding device is that a plurality of welding nuts are placed on the second positioning mechanism 4, the license plate is transported / placed on the first positioning mechanism 2, the first clamping mechanism 3 clamps the license plate, and after clamping is completed, the welding robot nut welds or spot welds the license plate.

[0040] It should be noted that the license plate that needs nut welding is provided with a through hole corresponding to the welding nut, and the welding nut can be clamped in the through hole and welded by the welding robot. The welding robot is a conventional welding robot on the market, and is omitted for the convenience of observing other parts of the drawing.

[0041] Referring to Figure 3 As shown in the drawings, in some preferred embodiments of the present application, the first clamping mechanism 3 comprises a first cylinder 31, a first clamping plate 32, a first abutting plate 33 and a first abutting block 34, the first abutting plate 33 is installed on the base 1; the first abutting block 34 is installed on the first abutting plate 33; the first clamping plate 32 is hinged to the first abutting plate 33, one end of the first clamping plate 32 abuts against the first abutting block 34, and the other end of the first clamping plate 32 is connected with the telescopic rod of the first cylinder 31; the first cylinder 31 is installed on the first abutting plate 33. In this way, the initial state of the telescopic rod of the first cylinder 31 is a tight state, at this time the telescopic rod pulls one end of the first clamping plate 32, and the other end of the first clamping plate 32 is separated from the first abutting block 34, facilitating the placement of the license plate; when the license plate needs to be clamped, the telescopic rod of the first cylinder 31 is extended and abuts against one end of the first clamping plate 32, so that the other end of the first clamping plate 32 abuts against the license plate and clamps the license plate together with the first abutting block 34.

[0042] In some preferred embodiments of the present invention, a second clamping mechanism 5 is further included. The second clamping mechanism 5 is mounted on the base 1 and is located on the rear side of the base 1. Specifically, the second clamping mechanism 5 can further clamp and fix the part of the license plate that needs to be welded, ensuring the accuracy and reliability of the welding.

[0043] In some preferred embodiments of the present invention, two second positioning mechanisms 4 are provided, and the two second positioning mechanisms 4 are spaced apart. Multiple second positioning mechanisms 4 can correspond to multiple welding positions, ensuring the overall welding reliability.

[0044] See Figure 2 As shown, in some preferred embodiments of the present invention, a detection plate 6 is further included. The detection plate 6 is located between the two support plates 41. One end of the positioning plate 42 is connected to the support plate 41, and the other end of the positioning plate is connected to the detection plate 6. In this way, the detection plate 6 can support the other end of the positioning plate 42, ensuring the stability of the positioning plate 42.

[0045] In some preferred embodiments of the present invention, three second clamping mechanisms 5 are provided, and the three second clamping mechanisms 5 are respectively provided in one-to-one correspondence with the two support plates 41 and the detection plate 6.

[0046] In some preferred embodiments of the present invention, each second clamping mechanism 5 includes a second cylinder, a second clamping plate, a second abutting plate, and a second abutting block. The three second abutting plates are respectively installed on the two support plates 41 and the detection plate 6. The second abutting block is installed on the second abutting plate. The second clamping plate is hinged to the second abutting plate, and one end of the second clamping plate abuts against the second abutting block. The other end of the second clamping plate is connected to the telescopic rod of the second cylinder. The second cylinder is installed on the second abutting plate. Thus, the initial state of the telescopic rod of the second cylinder is a tightened state, at which time the telescopic rod pulls one end of the second clamping plate tight, and the other end of the second clamping plate separates from the second abutting block, facilitating the insertion of the license plate. When it is necessary to clamp the license plate, the telescopic rod of the second cylinder extends and presses against one end of the second clamping plate, causing the other end of the second clamping plate to abut against the license plate, cooperating with the second abutting block to clamp the license plate.

[0047] In some preferred embodiments of the present invention, the detection plate 6 is provided with a first sensing mechanism 7, which is used to detect the welding nut in the positioning hole 43. Specifically, the first sensing mechanism 7 can detect whether the welding nut is accurately placed in the positioning hole 43.

[0048] See Figure 4As shown, in some preferred embodiments of the present invention, the positioning plate 42 includes a connecting plate 421 and a placement plate 422. The connecting plate 421 has an L-shaped structure, with one end connected to the support plate 41 and the other end horizontally positioned. A placement hole is provided at the horizontally positioned end, and the placement plate 422 is disposed in the placement hole. A positioning hole 43 is provided on the placement plate 422. In this way, the type of welding nut can be changed by replacing the placement plate 422, thereby adapting to different vehicle models.

[0049] It should be noted that the positioning hole 43 has the same shape as the welding nut, and the welding nut can be accurately locked into the positioning hole 43.

[0050] In some preferred embodiments of the present invention, multiple moving mechanisms are further included. Each moving mechanism corresponds one-to-one with the first positioning mechanism 2 and the first clamping mechanism 3. Each moving mechanism includes a guide rail, a linear module, a moving plate, and a drive motor. The guide rail is parallel to and spaced apart from the linear module on the base 1. The moving plate is connected to both the guide rail and the linear module. The drive motor is connected to the linear module. Thus, the moving mechanisms can move the positions of the first positioning mechanism 2 and the first clamping mechanism 3 to accommodate more types of vehicle models.

[0051] It should be noted that the linear module is the existing linear motion module, which will not be described in detail here.

[0052] In some preferred embodiments of the present invention, the base 1 is provided with a plurality of spaced second sensing mechanisms, which are used to detect the license plate.

[0053] A preferred embodiment of the present invention also provides a welding method comprising the following steps:

[0054] Place the welding nut into the second positioning mechanism 4 of the license plate welding equipment for later use;

[0055] The license plate is transported / placed to the first positioning mechanism 2 of the license plate welding equipment to position the license plate.

[0056] The second sensing mechanism identifies the size of the license plate, thereby obtaining the license plate type, determining the welding type, and clamping it accordingly through the first clamping mechanism 3; wherein the welding type includes spot welding and nut welding; after obtaining the license plate type, the position of the first clamping mechanism 3 is adaptively adjusted according to the license plate type through the moving mechanism to adjust the clamping position;

[0057] If the license plate corresponds to a nut welding type, the first sensing mechanism 7 will determine whether the welding nut is in place. If the welding nut is in place, the welding nut will be welded to the license plate.

[0058] If the license plate corresponds to the spot welding type, then spot welding is performed on the license plate;

[0059] After welding is completed, release the clamps, remove the license plate from the license plate welding equipment, and bring in the unwelded license plate, repeating the above steps.

[0060] In summary, the preferred embodiment of the present invention provides a license plate welding device, which, compared with the prior art:

[0061] The license plate welding equipment of the present invention includes a first positioning mechanism 2, which can accurately support and position the license plate, avoiding the need for operators to hold the license plate for extended periods during welding, thus reducing operator workload and operational difficulty; and a first clamping mechanism 3, which clamps the license plate to prevent movement during welding, improving welding accuracy and reliability; and a second positioning mechanism 4, which positions the welding nuts and, in conjunction with the first positioning mechanism 2, pairs multiple welding nuts with the license plate at once, allowing for simultaneous welding by a welding robot. The process is simple, easy for operators, low-difficulty, high-efficiency, and precise welding. Furthermore, it can simultaneously perform spot welding and nut welding, saving space.

[0062] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A license plate welding device, characterized in that, include: The base (1) has a front side facing the operator; The first positioning mechanism (2) includes a positioning post (21) and a positioning pin (22); the positioning post (21) is installed on the base (1), and the positioning pin (22) is disposed on the positioning post (21); the first positioning mechanism (2) is used to position the license plate. Two first clamping mechanisms (3) are installed on the base (1), and the two first clamping mechanisms (3) are respectively located on the left and right sides of the base (1); the first clamping mechanisms (3) are used to clamp the license plate; The second positioning mechanism (4) includes a support plate (41) and a positioning plate (42). The support plate (41) is installed on the base (1). The positioning plate (42) is disposed on the support plate (41) and the positioning plate (42) has a positioning hole (43) for placing a welding nut. A welding robot arm, located on the rear side of the base (1), is used to weld welding nuts to the license plate; It also includes a second clamping mechanism (5), which is mounted on the base (1) and located on the rear side of the base (1); the second clamping mechanism (5) is used to clamp and fix the part of the license plate that needs to be welded. There are two second positioning mechanisms (4), and the two second positioning mechanisms (4) are spaced apart; It also includes a detection plate (6), which is located between the two support plates (41), one end of the positioning plate (42) is connected to the support plate (41), and the other end of the positioning plate is connected to the detection plate (6). The positioning plate (42) includes a connecting plate (421) and a placement plate (422). The connecting plate (421) has an L-shaped structure, with one end connected to the support plate (41) and the other end set horizontally. The horizontally set end has a placement hole. The placement plate (422) is set in the placement hole, and the positioning hole (43) is opened on the placement plate (422).

2. The license plate welding equipment as described in claim 1, characterized in that... The first clamping mechanism (3) includes a first cylinder (31), a first clamping plate (32), a first abutting plate (33), and a first abutting block (34). The first abutting plate (33) is mounted on the base (1); the first abutting block (34) is mounted on the first abutting plate (33); the first clamping plate (32) is hinged to the first abutting plate (33), and one end of the first clamping plate (32) abuts against the first abutting block (34), and the other end of the first clamping plate (32) is connected to the telescopic rod of the first cylinder (31); the first cylinder (31) is mounted on the first abutting plate (33).

3. The license plate welding equipment as described in claim 1, characterized in that... There are three second clamping mechanisms (5), and the three second clamping mechanisms (5) are respectively arranged in correspondence with the two support plates (41) and the detection plate (6).

4. The license plate welding equipment as described in claim 3, characterized in that... Each of the second clamping mechanisms (5) includes a second cylinder, a second clamping plate, a second abutting plate, and a second abutting block. The three second abutting plates are respectively installed on the two support plates (41) and the detection plate (6). The second abutting block is installed on the second abutting plate. The second clamping plate is hinged to the second abutting plate, and one end of the second clamping plate abuts against the second abutting block. The other end of the second clamping plate is connected to the telescopic rod of the second cylinder. The second cylinder is installed on the second abutting plate.

5. The license plate welding equipment as described in claim 3, characterized in that... The detection plate (6) is provided with a first sensing mechanism (7), which is used to detect the welding nut of the positioning hole (43).

6. The license plate welding equipment as described in claim 1, characterized in that... It also includes multiple moving mechanisms, which are arranged one-to-one with the first positioning mechanism (2) and the first clamping mechanism (3). Each moving mechanism includes a guide rail, a linear module, a moving plate and a drive motor. The guide rail is parallel to and spaced apart from the linear module on the base (1). The moving plate is connected to the guide rail and the linear module respectively. The drive motor is connected to the linear module.

7. The license plate welding equipment as described in claim 1, characterized in that... The base (1) is provided with a plurality of spaced second sensing mechanisms, which are used to detect license plate plates.

8. A welding method for a license plate welding device as described in any one of claims 1-7, characterized in that: Includes the following steps: Place the welding nuts into the license plate welding equipment for later use; The license plate is transported to the license plate welding equipment for positioning. Obtain the license plate type, determine the welding type, and perform corresponding clamping; If the license plate corresponds to a specific type of nut welding, then check if the welding nut is in place. If the welding nut is in place, then weld the welding nut to the license plate. If the license plate corresponds to the spot welding type, then spot welding is performed on the license plate; After welding is completed, release the clamps, remove the license plate from the license plate welding equipment, and bring in the unwelded license plate, repeating the above steps.

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