Welding device for mounting automobile body

Abstract

The utility model discloses a welding device for mounting an automobile body, which comprises a mounting seat connected with a multi-degree-of-freedom manipulator, a connecting piece is arranged on the outer wall of one side of the mounting seat, a fixing frame is fixedly mounted on the connecting piece, a secondary feeding mechanism is arranged in the fixing frame, an air cylinder is mounted on the secondary feeding mechanism in a sliding manner, and the air cylinder is connected with the mounting seat. A first welding electrode head is installed at the bottom end of a telescopic rod of the air cylinder, a sliding sleeve is slidably connected to the outer portion of the first welding electrode head in a sleeving mode, and a clamping frame is fixedly arranged on the outer wall of one side of the sliding sleeve. According to the utility model, the welding electrode head I and the welding electrode head II are utilized to quickly weld the weldment, and meanwhile, the secondary feeding mechanism is arranged to realize secondary feeding of the welding electrode head I, so that when the weldment is melted at high temperature, the contact of the weldment is tighter through the secondary feeding of the welding electrode head I, and the welding efficiency is improved. And the effect of welding the weldment by using electric resistance welding is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a welding device for installing an automobile body. Background Art

[0002] The vehicle body structure is comprised of welded components, including the engine compartment, dash, roof, floor, inner and outer side panels, rear panel, longitudinal beams, cross beams, and reinforcement plates. Different welding methods are typically used for different parts of a vehicle, depending on the manufacturing process. Common welding methods include gas shielded welding, resistance welding, and laser welding.

[0003] When using resistance welding to weld the car body, the positive and negative electrodes of the resistance welding head are generally brought into contact with the two sides of the car weldment, and the current passes through and generates local high temperature, thereby achieving the purpose of welding the car body.

[0004] When using resistance welding to weld workpieces, two welding tips are clamped between the outer edges of two pieces to be welded. The two welding tips are momentarily energized, generating high temperatures at this location. This localized high temperature causes the weldment to melt, and the two welding tips are fixed. This results in loose contact between the two welds, making them susceptible to falling apart. Therefore, there is an urgent need to design a welding device for automobile body assembly to address this issue. Utility Model Content

[0005] The purpose of the utility model is to provide a welding device for installing an automobile body, so as to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A welding device for mounting an automobile body comprises a mounting base connected to a multi-degree-of-freedom manipulator, a connecting piece provided on an outer wall of one side of the mounting base, and a fixing frame fixedly mounted on the connecting piece, a secondary feed mechanism provided inside the fixing frame, and a cylinder slidably mounted on the secondary feed mechanism, a welding pole head 1 being mounted on the bottom end of the cylinder telescopic rod, and a sliding sleeve being slidably sleeved on the outside of the welding pole head 1, a clamping frame being fixedly provided on the outer wall of one side of the sliding sleeve, and a mounting frame connected to the fixing frame being welded to the outer wall of one side of the clamping frame, a base being provided at the bottom of the clamping frame, and a welding pole head 2 being fixedly mounted on the base.

[0008] Preferably, the connecting member is a stabilizing frame, and the stabilizing frame is composed of 2-6 identical square rods.

[0009] Preferably, a control valve is provided on one side of the cylinder, and an air pipe connector is provided on the control valve, and a base plate is fixedly installed on the bottom end of the cylinder.

[0010] Preferably, the clamping frame is a C-shaped structure, a weldment is provided inside the clamping frame, and the first welding pole head and the second welding pole head are located on both sides of the weldment.

[0011] Preferably, support rods are provided at the top and inner corners of the clamping frame, and high-definition cameras are provided on the support rods. The high-definition cameras are at least used for quality inspection of welding points.

[0012] Preferably, the welding head 1 and the welding head 2 are located on the same straight line, and the distance between the welding head 1 and the welding head 2 is 0.1-4 cm.

[0013] Preferably, the secondary feeding mechanism includes a forward and reverse motor provided on one side of the fixed frame, and a driving gear is provided on the forward and reverse motor, a connecting plate is fixedly installed on the outer wall of one side of the cylinder, and a rack meshing with the driving gear is provided on one side of the connecting plate, sliding grooves are provided on the outer walls on both sides of the connecting plate, and blocks inserted into the sliding grooves are provided on the outer walls on both sides of the fixed frame.

[0014] In the above technical solution, the utility model provides a welding device for automobile body installation, which has the following beneficial effects:

[0015] The welding pole head 1 and the welding pole head 2 are used to achieve rapid welding of the weldment. At the same time, the secondary feeding mechanism is set up to achieve secondary feeding of the welding pole head 1. When the weldment melts at high temperature, the secondary feeding of the welding pole head 1 can make the contact of the weldment closer, thereby improving the welding effect of the weldment using resistance welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 The present invention provides a perspective structural diagram of an embodiment of a welding device for mounting an automobile body.

[0018] Figure 2 This is a three-dimensional structural diagram from another angle provided by an embodiment of the welding device for mounting an automobile body according to the present invention.

[0019] Figure 3 The present invention is a schematic structural diagram of a clamping frame and a mounting frame provided in an embodiment of a welding device for mounting an automobile body.

[0020] Figure 4The present invention is a schematic structural diagram of a secondary feeding mechanism provided in an embodiment of a welding device for mounting an automobile body.

[0021] 1 mounting base, 2 stabilizing frame, 3 fixing frame, 4 secondary feeding mechanism, 41 forward and reverse motor, 42 driving gear, 43 connecting plate, 44 rack, 45 slide, 46 block, 5 cylinder, 6 control valve, 7 bottom plate, 8 welding head 1, 9 sliding sleeve, 10 clamping frame, 11 mounting frame, 12 support rod, 13 high-definition camera, 14 base, 15 welding head 2, 16 weldment. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] like Figure 1-4 As shown, an embodiment of the present invention provides a welding device for automobile body installation, including a mounting base 1 connected to a multi-degree-of-freedom manipulator, a connecting piece is provided on the outer wall of one side of the mounting base 2, and a fixing frame 3 is fixedly installed on the connecting piece, a secondary feeding mechanism 4 is provided inside the fixing frame 3, and a cylinder 5 is slidably installed on the secondary feeding mechanism 4, a welding head 8 is installed at the bottom end of the telescopic rod of the cylinder 5, and the outer side of the welding head 8 is slidably sleeved with a sliding sleeve 9, a clamping frame 10 is fixedly provided on the outer wall on one side of the sliding sleeve 9, and a mounting frame 11 connected to the fixing frame 3 is welded on the outer wall on one side of the clamping frame 10, a base 14 is provided at the bottom of the clamping frame 10, and a welding head 2 15 is fixedly installed on the base 14.

[0024] In this embodiment, a mounting base 1 is connected to a multi-degree-of-freedom manipulator. The multi-degree-of-freedom manipulator can drive the mounting base 1 to move in multiple directions, thereby achieving more flexible welding operations on the weldment. The manipulator has at least three degrees of freedom. A connecting piece is provided on one side outer wall of the mounting base 2, and a fixing frame 3 is fixedly mounted on the connecting piece.

[0025] Specifically, the connecting member is a stabilizing frame 2 , and the stabilizing frame 2 is composed of 2-6 identical square bars, and the number of square bars is preferably 4. The stabilizing frame 2 is used to realize the connection between the fixing clamp 3 and the mounting seat 1 .

[0026] In this embodiment, a secondary feeding mechanism 4 is provided inside the fixing frame 3, and the secondary feeding mechanism 4 is used for at least the secondary movement of the welding head 8;

[0027] Specifically, the secondary feeding mechanism 4 includes a forward and reverse motor 41 provided on one side of the fixed frame 3, and a driving gear 42 is provided on the forward and reverse motor 41. A connecting plate 43 is fixedly installed on the outer wall of one side of the cylinder 5, and a rack 44 is provided on one side of the connecting plate 43 to engage with the driving gear 42. Slide grooves 45 are provided on the outer walls on both sides of the connecting plate 43, and a block 46 inserted into the slide groove 45 is provided on the outer walls on both sides of the fixed frame 3.

[0028] After the welding head 1 8 and the welding head 2 15 are used to clamp the weldment, power is supplied between the welding head 1 8 and the welding head 2 15. At the same time, by starting the forward and reverse motor 41, the rack 44 is driven downward through the driving gear 42, so that the welding head 1 8 moves toward the welding head 2 15, making the contact between the weldments closer and improving the effect of welding the weldments by resistance welding. At the same time, when the rack 44 moves, the block 46 runs inside the slide groove 45, thereby improving the accuracy of the rack movement.

[0029] In this embodiment, a cylinder 5 is slidably mounted on the secondary feeding mechanism 4;

[0030] Specifically, a control valve 6 is provided on one side of the cylinder 5, and an air pipe connector is provided on the control valve 6. The control valve 6 can be a pilot valve, so that the cylinder 5 has the function of stopping at any position, which is beneficial for welding operations on weldments of different specifications. A base plate 7 is fixedly installed at the bottom end of the cylinder 5.

[0031] In this embodiment, a welding head 8 is installed at the bottom end of the telescopic rod of the cylinder 5, and a sliding sleeve 9 is slidably sleeved on the outside of the welding head 8. A clamping frame 10 is fixedly provided on the outer wall of one side of the sliding sleeve 9. A mounting frame 11 connected to the fixing frame 3 is welded on the outer wall of one side of the clamping frame 10. Since the mounting frame 11 is fixed on the fixing frame 3, and the clamping frame 10 is fixedly mounted on the mounting frame 11, when the cylinder 5 is actuated, the telescopic rod of the cylinder passes through the sliding sleeve 9. When the secondary feeding mechanism 4 moves, the telescopic rod of the cylinder 5 passes through the sliding sleeve 9 again, so that the telescopic rod of the cylinder and the cylinder have a movement process;

[0032] Specifically, the clamping frame 10 is a C-shaped structure, and a weldment 16 is arranged inside the clamping frame 10. The welding head 18 and the welding head 2 15 are located on both sides of the weldment 16. When the clamping frame 10 is used to position the weldment 16, the welding head 2 15 is first contacted with the weldment 16, and then the cylinder 5 is controlled to move, so that the telescopic rod of the cylinder 5 drives the welding head 18 to contact the weldment 16 again.

[0033] In this embodiment, support rods 12 are provided at the top and internal corners of the clamping frame 10, and a high-definition camera 13 is provided on the support rod 12. The high-definition camera 13 is at least used to check the quality of the welding points. The high-definition camera 13 can continuously shoot the welding process of the weldment and compare it with the pictures of the pre-set welding points, so as to judge the quality of the welding and facilitate people to make timely adjustments to the welding device.

[0034] In this embodiment, a base 14 is provided at the bottom of the clamping frame 10, and a second welding head 15 is fixedly mounted on the base 14;

[0035] Specifically, the welding head 1 8 and the welding head 2 15 are located on the same straight line, and the distance between the welding head 1 8 and the welding head 2 15 is 0.1-4 cm. The distance here is also the thickness of the weldment applicable to the welding device.

[0036] The utility model provides a welding device for automobile body installation, which utilizes welding head 1 8 and welding head 2 15 to achieve rapid welding of welded parts. At the same time, through the secondary feeding mechanism 4, secondary feeding of welding head 1 8 can be achieved. When the welded parts are melted at high temperature, the secondary feeding of welding head 1 can make the contact of the welded parts closer, thereby improving the effect of welding the welded parts by using resistance welding.

[0037] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A welding device for mounting an automobile body, comprising a mounting base (1) connected to a multi-degree-of-freedom manipulator, characterized in that: A connecting piece is provided on the outer wall of one side of the mounting seat (1), and a fixing frame (3) is fixedly installed on the connecting piece, a secondary feeding mechanism (4) is provided inside the fixing frame (3), and a cylinder (5) is slidably installed on the secondary feeding mechanism (4), a welding head (8) is installed at the bottom end of the telescopic rod of the cylinder (5), and the outer sliding sleeve (9) of the welding head (8) is connected to the sliding sleeve (9), a clamping frame (10) is fixedly provided on the outer wall of one side of the sliding sleeve (9), and a mounting frame (11) connected to the fixing frame (3) is welded on the outer wall of one side of the clamping frame (10), a base (14) is provided at the bottom of the clamping frame (10), and a welding head (15) is fixedly installed on the base (14).

2. The welding device for automobile body installation according to claim 1, characterized in that: The connecting piece is a stabilizing frame (2), and the stabilizing frame (2) is composed of 2 to 6 identical square rods.

3. The welding device for automobile body installation according to claim 1, characterized in that: A control valve (6) is provided on one side of the cylinder (5), and an air pipe connector is provided on the control valve (6). A bottom plate (7) is fixedly installed on the bottom end of the cylinder (5).

4. The welding device for automobile body installation according to claim 1, characterized in that: The clamping frame (10) is a C-shaped structure. A weldment (16) is provided inside the clamping frame (10). The first welding head (8) and the second welding head (15) are located on both sides of the weldment (16).

5. The welding device for automobile body installation according to claim 1, characterized in that: Support rods (12) are provided at the top and inner corners of the clamping frame (10), and high-definition cameras (13) are provided on the support rods (12). The high-definition cameras (13) are at least used for quality inspection of welding points.

6. The welding device for automobile body installation according to claim 1, characterized in that: The welding pole head 1 (8) and the welding pole head 2 (15) are located on the same straight line, and the distance between the welding pole head 1 (8) and the welding pole head 2 (15) is 0.1-4 cm.

7. The welding device for automobile body installation according to claim 1, characterized in that: The secondary feeding mechanism (4) comprises a forward and reverse motor (41) provided on one side of the fixed frame (3), and a driving gear (42) is provided on the forward and reverse motor (41), a connecting plate (43) is fixedly mounted on the outer wall of one side of the cylinder (5), and a rack (44) meshing with the driving gear (42) is provided on one side of the connecting plate (43), a sliding groove (45) is provided on the outer walls on both sides of the connecting plate (43), and a card block (46) inserted into the sliding groove (45) is provided on the outer walls on both sides of the fixed frame (3).

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