Laser welding profiling tooling for commercial vehicle roof and method of use thereof

Abstract

The present invention relates to the field of laser welding technology and discloses a laser welding profiling tool for commercial vehicle roofs, comprising a fixture base, a plurality of support seats provided on the fixture base, a plurality of positioning blocks provided on the support seats for positioning roof components, an OG clamping mechanism provided on the support seats for clamping a middle roof laser welding profiling tool and a side roof laser welding profiling tool, and a clamping mechanism provided on the middle roof laser welding profiling tool and the side roof laser welding profiling tool. The present invention also discloses a method for using the laser welding profiling tool for commercial vehicle roofs. The laser welding profiling tool for commercial vehicle roofs and its method of use of the present invention perform high-precision positioning and clamping of roof components. The entire laser weld seam ensures the post-weld sealing of the components, eliminates the gluing process, and avoids quality issues such as leaks.

Description

Technical Field

[0001] The present invention relates to the technical field of laser welding, and in particular to a laser welding profiling tool for a commercial vehicle roof and a use method thereof. Background Art

[0002] Resistance welding technology uses cylindrical electrodes to form welds between the contact surfaces of workpieces. It boasts advantages such as high speed, ease of operation, and low energy consumption, making it commonly used in fields such as automotive manufacturing. Commercial vehicle roofs are complex in design, typically consisting of front, rear, center, and side roofs. Currently, resistance welding is the most common method used for welding commercial vehicle roof assemblies, using electronically controlled fixtures and manually assisted positioning fixtures.

[0003] However, the current fixture has the following problems:

[0004] 1. Using the existing tooling positioning, the sealing of the top cover assembly after resistance welding is poor. Usually, it is necessary to use glue at the overlap of the parts to enhance the sealing of the top cover welding assembly;

[0005] 2. The inevitable gluing operation increases the complexity of the top cover welding operation;

[0006] 3. Auxiliary materials such as sealants increase manufacturing costs. Summary of the Invention

[0007] The purpose of the present invention is to address the shortcomings of the above-mentioned technology and provide a laser welding profiling tool for commercial vehicle roof covers and its use method, which can perform high-precision positioning and clamping of roof cover parts. The entire laser weld can ensure the post-weld sealing of the parts, eliminate the gluing process, and avoid the quality problem of leakage.

[0008] To achieve the above-mentioned purpose, the laser welding profiling tool for commercial vehicle roof designed by the present invention includes a fixture base, a plurality of support seats are provided on the fixture base, and a plurality of positioning blocks for positioning the roof parts are provided on the support seats. The support seats are also provided with an OG clamping mechanism for clamping the middle roof laser welding profiling tool and the side roof laser welding profiling tool. The middle roof laser welding profiling tool and the side roof laser welding profiling tool are provided with a clamping mechanism.

[0009] Preferably, the middle top cover laser welding profiling tooling includes a middle top cover laser welding profiling tooling base plate, a tool quick change device is installed in the middle of the middle top cover laser welding profiling tooling base plate, the tool quick change device is connected to the sling, a valve island is installed at the right rear of the middle top cover laser welding profiling tooling base plate, an electrical relay box is installed at the left rear of the middle top cover laser welding profiling tooling base plate, and the middle top cover laser welding profiling tooling base plate is also connected to a clamping mechanism.

[0010] Preferably, the side top cover laser welding profiling tooling includes a side top cover laser welding profiling tooling base plate, a tool quick change device is installed in the middle of the side top cover laser welding profiling tooling base plate, the tool quick change device is connected to the sling, and the front of the middle top cover laser welding profiling tooling base plate is also connected to a clamping mechanism.

[0011] Preferably, the clamping mechanism includes several one-way clamping mechanisms for clamping the overlap between the middle top cover and the side top cover, which are arranged on the left and right sides of the bottom plate of the middle top cover laser welding profiling tooling, and also includes several one-way clamping mechanisms for clamping the overlap between the middle top cover and the front top cover, and also includes several two-way clamping mechanisms for clamping the overlap between the middle top cover and the front of the side top cover and the front of the middle top cover.

[0012] Preferably, the clamping mechanism includes a plurality of one-way clamping mechanisms provided on the left and right side surfaces of the bottom plate of the side top cover laser welding profiling tooling for clamping the overlapping portion between the front top cover and the side top cover.

[0013] Preferably, a modular electric-controlled clamping system is also included to control the clamping and releasing of the OG clamping mechanism and the clamping mechanism.

[0014] A method for using the laser welding profiling tool for a commercial vehicle roof comprises the following steps:

[0015] A) Initial position state: put each device in the initial state;

[0016] B) Parts assembly process: Assemble the top cover parts and the positioning blocks into place according to the positioning joints;

[0017] C) Contouring tooling working process: Install the middle cover laser welding contouring tooling and the side cover laser welding contouring tooling, and use the OG clamping mechanism to clamp them, and then use the clamping mechanism to clamp the top cover parts;

[0018] D) Laser welding process: The robot grabs the laser welding gun and completes the laser welding along the welding track lines between the middle roof and side roof, the front roof and the front roof;

[0019] E) Clamping mechanism release process: After laser welding is completed, the OG clamping mechanism is released first, and then the clamping mechanisms on the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling are released;

[0020] F) Process of restoring the initial state: the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling are moved upward by the hoist to keep them consistent with the initial position state.

[0021] Preferably, the middle top cover laser welding profiling tooling includes a middle top cover laser welding profiling tooling base plate, and a tool quick-changing device is installed in the middle of the middle top cover laser welding profiling tooling base plate, and the tool quick-changing device is connected to the sling, and a valve island is installed at the right rear of the middle top cover laser welding profiling tooling base plate, and an electrical relay box is installed at the left rear of the middle top cover laser welding profiling tooling base plate. The middle top cover laser welding profiling tooling base plate is also connected to a clamping mechanism. In the step C), the sling connected to the tool quick-changing device moves downward, and the middle top cover laser welding profiling tooling base plate follows and moves downward. After confirming that it is in place, the OG clamping mechanism is controlled by the valve island and the electrical relay box to complete the positioning of the middle top cover laser welding profiling tooling base plate.

[0022] Preferably, the clamping mechanism includes several one-way clamping mechanisms for clamping the overlap between the middle top cover and the side top cover, which are arranged on the left and right side surfaces of the bottom plate of the middle top cover laser welding profiling tooling, and also includes several one-way clamping mechanisms for clamping the overlap between the middle top cover and the front top cover, and also includes several two-way clamping mechanisms for clamping the overlap between the middle top cover and the front of the side top cover and the front of the middle top cover. In the step C), the two-way clamping mechanism and the one-way clamping mechanism on the bottom plate of the middle top cover laser welding profiling tooling are controlled to clamp the top cover parts.

[0023] Preferably, the side top cover laser welding profiling tool includes a side top cover laser welding profiling tool base plate, a tool quick-changing device is installed in the middle of the side top cover laser welding profiling tool base plate, the tool quick-changing device is connected to the hanger, and the front part of the middle top cover laser welding profiling tool base plate is also connected to a clamping mechanism, the clamping mechanism includes several one-way clamping mechanisms arranged on the left and right sides of the side top cover laser welding profiling tool base plate for clamping the overlap between the front top cover and the side top cover, in the step C), the hanger connected to the tool quick-changing device moves downward, and the side top cover laser welding profiling tool base plate follows and moves downward, after confirming that it is in place, the OG clamping mechanism is controlled to clamp, to complete the positioning of the side top cover laser welding profiling tool base plate, and the one-way clamping mechanism on the side top cover laser welding profiling tool base plate is controlled to clamp the top cover parts.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] 1. Two profiling fixtures are used to complete the clamping and positioning of complex parts. The clamping mechanism installed on each profiling fixture can be independently controlled and adjusted to ensure the welding gap required for laser welding.

[0026] 2. Use the side cover profiling tool to accurately press the joint between the side cover and the front cover to ensure the quality of laser welding;

[0027] 3. Effectively solve the problems of after-market complaints caused by leaking roof covers of commercial vehicles, as well as complex manufacturing processes and high manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of the laser welding profiling tooling for commercial vehicle roofs of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure after the laser welding profiling tooling for the middle top cover is installed;

[0030] Figure 3 This is a schematic diagram of the structure after the side top cover laser welding profiling tooling is installed;

[0031] Figure 4 This is a front view of the laser welding profiling tool for a commercial vehicle roof according to the present invention;

[0032] Figure 5 for Figure 4 A top view of

[0033] Figure 6 This is a schematic diagram of the structure after the parts are clamped when the present invention is used.

[0034] The components in the figure are numbered as follows:

[0035] Fixture base 1, support seat 2, positioning block 3, OG clamping mechanism 4, middle top cover laser welding profiling tooling base plate 5, tool quick change device 6, valve island 7, electrical relay box 8, side top cover laser welding profiling tooling base plate 9, one-way clamping mechanism 10, two-way clamping mechanism 11, middle top cover, side top cover and front top cover welding trajectory line 12, front top cover and side top cover welding trajectory line 13. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0039] Example 1

[0040] like Figure 1 As shown, a laser welding profiling tool for a commercial vehicle roof comprises a fixture base 1, a plurality of support seats 2 are provided on the fixture base 1, a plurality of positioning blocks 3 for positioning the roof parts are provided on the support seats 2, an OG clamping mechanism 4 for clamping the middle roof laser welding profiling tool and the side roof laser welding profiling tool is also provided on the support seat 2, and a clamping mechanism is provided on the middle roof laser welding profiling tool and the side roof laser welding profiling tool.

[0041] When used in this embodiment, the following steps are included:

[0042] A) Initial position state: put each device in the initial state;

[0043] B) Parts assembly process: Figure 4 and Figure 5 As shown, assemble the top cover parts and the positioning block 3 into place according to the positioning joints;

[0044] C) Contouring tooling working process: Install the middle cover laser welding contouring tooling and the side cover laser welding contouring tooling, and use the OG clamping mechanism 4 to clamp them, and then use the clamping mechanism to clamp the top cover parts;

[0045] D) Laser welding process: The robot grabs the laser welding gun and combines Figure 6 As shown, laser welding is completed along the welding track line 12 between the middle roof cover, the side roof cover and the front roof cover, and the welding track line 13 between the front roof cover and the side roof cover;

[0046] E) Clamping mechanism release process: After laser welding is completed, the OG clamping mechanism 4 is released first, and then the clamping mechanisms on the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling are released;

[0047] F) Process of restoring the initial state: the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling are moved upward by the hoist to keep them consistent with the initial position state.

[0048] Example 2

[0049] like Figure 1As shown, a laser welding profiling tool for a commercial vehicle roof comprises a fixture base 1, a plurality of support seats 2 are provided on the fixture base 1, a plurality of positioning blocks 3 for positioning the roof parts are provided on the support seats 2, an OG clamping mechanism 4 for clamping the middle roof laser welding profiling tool and the side roof laser welding profiling tool is also provided on the support seat 2, and a clamping mechanism is provided on the middle roof laser welding profiling tool and the side roof laser welding profiling tool.

[0050] Among them, combined Figure 2 As shown, the middle top cover laser welding profiling tooling includes a middle top cover laser welding profiling tooling base plate 5, a tool quick change device 6 is installed in the middle of the middle top cover laser welding profiling tooling base plate 5, the tool quick change device 6 is connected to the sling, a valve island 7 is installed at the right rear of the middle top cover laser welding profiling tooling base plate 5, an electrical relay box 8 is installed at the left rear of the middle top cover laser welding profiling tooling base plate 5, and the middle top cover laser welding profiling tooling base plate 5 is also connected to a clamping mechanism.

[0051] When used in this embodiment, the following steps are included:

[0052] A) Initial position state: put each device in the initial state;

[0053] B) Parts assembly process: Assemble the top cover parts and the positioning block 3 into place according to the positioning joints;

[0054] C) Profiling tooling operation process: Install the center cover laser welding profiling tooling and the side cover laser welding profiling tooling, and use the OG clamping mechanism 4 to clamp them. Then, use the clamping mechanism to clamp the cover parts. Specifically, the hanger connected to the tool quick changer 6 moves downward, and the center cover laser welding profiling tooling base plate 5 moves downward accordingly. After confirming that it is in place, the OG clamping mechanism 4 is controlled by the valve island 7 and electrical relay box 8 to clamp, completing the positioning of the center cover laser welding profiling tooling base plate 5;

[0055] D) Laser welding process: The robot grabs the laser welding gun and completes the laser welding along the welding track line 12 between the middle roof cover, the side roof cover and the front roof cover, and the welding track line 13 between the front roof cover and the side roof cover;

[0056] E) Clamping mechanism release process: After laser welding is completed, the OG clamping mechanism 4 is released first, and then the clamping mechanisms on the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling are released;

[0057] F) Process of restoring the initial state: the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling are moved upward by the hoist to keep them consistent with the initial position state.

[0058] Example 3

[0059] like Figure 1As shown, a laser welding profiling tool for a commercial vehicle roof comprises a fixture base 1, a plurality of support seats 2 are provided on the fixture base 1, a plurality of positioning blocks 3 for positioning the roof parts are provided on the support seats 2, an OG clamping mechanism 4 for clamping the middle roof laser welding profiling tool and the side roof laser welding profiling tool is also provided on the support seat 2, and a clamping mechanism is provided on the middle roof laser welding profiling tool and the side roof laser welding profiling tool.

[0060] Among them, combined Figure 3 As shown, the side top cover laser welding profiling tooling includes a side top cover laser welding profiling tooling base plate 9, a tool quick change device 6 is installed in the middle of the side top cover laser welding profiling tooling base plate 9, the tool quick change device 6 is connected to the sling, and the front of the middle top cover laser welding profiling tooling base plate 9 is also connected to a clamping mechanism.

[0061] When used in this embodiment, the following steps are included:

[0062] A) Initial position state: put each device in the initial state;

[0063] B) Parts assembly process: Assemble the top cover parts and the positioning block 3 into place according to the positioning joints;

[0064] C) Profiling tooling working process: Install the center cover laser welding profiling tooling and the side cover laser welding profiling tooling, and use the OG clamping mechanism 4 to clamp them. Then use the clamping mechanism to clamp the cover parts. Specifically, the hanger connected to the tool quick changer 6 moves downward, and the side cover laser welding profiling tooling base plate 9 moves downward accordingly. After confirming that it is in place, the OG clamping mechanism 4 is controlled to clamp, completing the positioning of the side cover laser welding profiling tooling base plate 9;

[0065] D) Laser welding process: The robot grabs the laser welding gun and completes the laser welding along the welding track line 12 between the middle roof cover, the side roof cover and the front roof cover, and the welding track line 13 between the front roof cover and the side roof cover;

[0066] E) Clamping mechanism release process: After laser welding is completed, the OG clamping mechanism 4 is released first, and then the clamping mechanisms on the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling are released;

[0067] F) Process of restoring the initial state: the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling are moved upward by the hoist to keep them consistent with the initial position state.

[0068] Example 4

[0069] like Figure 1As shown, a laser welding profiling tool for a commercial vehicle roof comprises a fixture base 1, a plurality of support seats 2 are provided on the fixture base 1, a plurality of positioning blocks 3 for positioning the roof parts are provided on the support seats 2, an OG clamping mechanism 4 for clamping the middle roof laser welding profiling tool and the side roof laser welding profiling tool is also provided on the support seat 2, and a clamping mechanism is provided on the middle roof laser welding profiling tool and the side roof laser welding profiling tool.

[0070] Among them, combined Figure 2 As shown, the middle top cover laser welding profiling tooling includes a middle top cover laser welding profiling tooling base plate 5, a tool quick change device 6 is installed in the middle of the middle top cover laser welding profiling tooling base plate 5, the tool quick change device 6 is connected to the sling, a valve island 7 is installed at the right rear of the middle top cover laser welding profiling tooling base plate 5, an electrical relay box 8 is installed at the left rear of the middle top cover laser welding profiling tooling base plate 5, and the middle top cover laser welding profiling tooling base plate 5 is also connected to a clamping mechanism.

[0071] The clamping mechanism includes several one-way clamping mechanisms 10 for clamping the overlap between the middle top cover and the side top cover, which are arranged on the left and right sides of the bottom plate 5 of the middle top cover laser welding profiling tooling, and also includes several one-way clamping mechanisms 10 for clamping the overlap between the middle top cover and the front top cover, and also includes several two-way clamping mechanisms 11 for clamping the overlap between the middle top cover and the front of the side top cover and the front of the middle top cover.

[0072] When used in this embodiment, the following steps are included:

[0073] A) Initial position state: put each device in the initial state;

[0074] B) Parts assembly process: Assemble the top cover parts and the positioning block 3 into place according to the positioning joints;

[0075] C) Profiling tooling working process: Install the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling, and use the OG clamping mechanism 4 to clamp them. Then use the clamping mechanism to clamp the top cover parts. Specifically, the hanger connected to the tool quick changer 6 moves downward, and the bottom plate 5 of the middle top cover laser welding profiling tooling moves downward accordingly. After confirming that they are in place, the OG clamping mechanism 4 is controlled by the valve island 7 and the electrical relay box 8 to clamp, completing the positioning of the bottom plate 5 of the middle top cover laser welding profiling tooling. The bidirectional clamping mechanism 10 and the unidirectional clamping mechanism 11 on the bottom plate 5 of the middle top cover laser welding profiling tooling are then controlled to clamp the top cover parts.

[0076] D) Laser welding process: The robot grabs the laser welding gun and completes the laser welding along the welding track line 12 between the middle roof cover, the side roof cover and the front roof cover, and the welding track line 13 between the front roof cover and the side roof cover;

[0077] E) Clamping mechanism release process: After laser welding is completed, the OG clamping mechanism 4 is released first, and then the clamping mechanisms on the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling are released;

[0078] F) Process of restoring the initial state: the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling are moved upward by the hoist to keep them consistent with the initial position state.

[0079] Example 5

[0080] like Figure 1 As shown, a laser welding profiling tool for a commercial vehicle roof comprises a fixture base 1, a plurality of support seats 2 are provided on the fixture base 1, a plurality of positioning blocks 3 for positioning the roof parts are provided on the support seats 2, an OG clamping mechanism 4 for clamping the middle roof laser welding profiling tool and the side roof laser welding profiling tool is also provided on the support seat 2, and a clamping mechanism is provided on the middle roof laser welding profiling tool and the side roof laser welding profiling tool.

[0081] Among them, combined Figure 3 As shown, the side top cover laser welding profiling tooling includes a side top cover laser welding profiling tooling base plate 9, a tool quick change device 6 is installed in the middle of the side top cover laser welding profiling tooling base plate 9, the tool quick change device 6 is connected to the sling, and the front of the middle top cover laser welding profiling tooling base plate 9 is also connected to a clamping mechanism.

[0082] The clamping mechanism includes a plurality of one-way clamping mechanisms 10 provided on the left and right sides of the side top cover laser welding profiling tooling bottom plate 9 for clamping the overlap of the front top cover and the side top cover.

[0083] When used in this embodiment, the following steps are included:

[0084] A) Initial position state: put each device in the initial state;

[0085] B) Parts assembly process: Assemble the top cover parts and the positioning block 3 into place according to the positioning joints;

[0086] C) Profiling tooling working process: Install the middle cover laser welding profiling tooling and the side cover laser welding profiling tooling, and use the OG clamping mechanism 4 to clamp them. Then use the clamping mechanism to clamp the cover parts. Specifically, the hanger connected to the tool quick changer 6 moves downward, and the side cover laser welding profiling tooling base plate 9 moves downward accordingly. After confirming that it is in place, the OG clamping mechanism 4 is controlled to clamp, completing the positioning of the side cover laser welding profiling tooling base plate 9. The one-way clamping mechanism 10 on the side cover laser welding profiling tooling base plate 9 is controlled to clamp the cover parts.

[0087] D) Laser welding process: The robot grabs the laser welding gun and completes the laser welding along the welding track line 12 between the middle roof cover, the side roof cover and the front roof cover, and the welding track line 13 between the front roof cover and the side roof cover;

[0088] E) Clamping mechanism release process: After laser welding is completed, the OG clamping mechanism 4 is released first, and then the clamping mechanisms on the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling are released;

[0089] F) Process of restoring the initial state: the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling are moved upward by the hoist to keep them consistent with the initial position state.

[0090] Example 6

[0091] A laser welding profiling tool for commercial vehicle roofs includes a fixture base 1, a plurality of support seats 2 are provided on the fixture base 1, a plurality of positioning blocks 3 for positioning roof parts are provided on the support seats 2, an OG clamping mechanism 4 for clamping a middle roof laser welding profiling tool and a side roof laser welding profiling tool is also provided on the support seats 2, and a clamping mechanism is provided on the middle roof laser welding profiling tool and the side roof laser welding profiling tool.

[0092] Among them, the middle top cover laser welding profiling tooling includes a middle top cover laser welding profiling tooling base plate 5, a tool quick change device 6 is installed in the middle of the middle top cover laser welding profiling tooling base plate 5, the tool quick change device 6 is connected to the sling, a valve island 7 is installed on the right rear of the middle top cover laser welding profiling tooling base plate 5, an electrical relay box 8 is installed on the left rear of the middle top cover laser welding profiling tooling base plate 5, and the middle top cover laser welding profiling tooling base plate 5 is also connected to a clamping mechanism.

[0093] The side top cover laser welding profiling tooling includes a side top cover laser welding profiling tooling base plate 9. A tool quick change device 6 is installed in the middle of the side top cover laser welding profiling tooling base plate 9. The tool quick change device 6 is connected to the sling. The front part of the middle top cover laser welding profiling tooling base plate 9 is also connected to a clamping mechanism.

[0094] In addition, in this embodiment, the clamping mechanism includes several one-way clamping mechanisms 10 for clamping the overlap between the middle top cover and the side top cover, which are arranged on the left and right sides of the bottom plate 5 of the laser welding profiling tooling of the middle top cover, and also includes several one-way clamping mechanisms 10 for clamping the overlap between the middle top cover and the front top cover, and also includes several two-way clamping mechanisms 11 for clamping the overlap between the middle top cover and the front of the side top cover and the front of the middle top cover.

[0095] In this embodiment, the clamping mechanism includes a plurality of one-way clamping mechanisms 10 provided on the left and right sides of the side top cover laser welding profiling tooling bottom plate 9 for clamping the overlapped portion of the front top cover and the side top cover.

[0096] In this embodiment, a modular electric-controlled clamping system is also included to control the clamping and releasing of the OG clamping mechanism 4 and the clamping mechanism.

[0097] When used in this embodiment, the following steps are included:

[0098] A) Initial position state: put each device in the initial state;

[0099] B) Parts assembly process: Assemble the top cover parts and the positioning block 3 into place according to the positioning joints;

[0100] C) Profiling tooling working process: Install the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling, and use the OG clamping mechanism 4 to clamp them, and then use the clamping mechanism to clamp the top cover parts, the hanger connected to the tool quick change device 6 moves down, and the middle top cover laser welding profiling tooling base plate 5 follows and moves down. After confirming that it is in place, the OG clamping mechanism 4 is controlled to clamp through the valve island 7 and the electrical relay box 8 to complete the positioning of the middle top cover laser welding profiling tooling base plate 5, and the bidirectional clamping mechanism 10 and the unidirectional clamping mechanism 11 on the middle top cover laser welding profiling tooling base plate 5 are controlled to clamp the top cover parts, the hanger connected to the tool quick change device 6 moves down, and the side top cover laser welding profiling tooling base plate 9 follows and moves down. After confirming that it is in place, the OG clamping mechanism 4 is controlled to clamp, and the positioning of the side top cover laser welding profiling tooling base plate 9 is completed, and the unidirectional clamping mechanism 10 on the side top cover laser welding profiling tooling base plate 9 is controlled to clamp the top cover parts;

[0101] D) Laser welding process: The robot grabs the laser welding gun and completes the laser welding along the welding track line 12 between the middle roof cover, the side roof cover and the front roof cover, and the welding track line 13 between the front roof cover and the side roof cover;

[0102] E) Clamping mechanism release process: After laser welding is completed, the OG clamping mechanism 4 is released first, and then the clamping mechanisms on the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling are released;

[0103] F) Process of restoring the initial state: the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling are moved upward by the hoist to keep them consistent with the initial position state.

[0104] The present invention is used for a laser welding profiling tool for commercial vehicle roofs and a method for using the same. Two profiling tool combinations are used to complete the clamping and positioning of complex parts. The clamping mechanisms installed on each profiling tool can be independently controlled and adjusted to ensure the part welding gap required for laser welding. The side roof profiling tool can be used to accurately press the overlapping joints between the side roof and the front roof to ensure the quality of laser welding. The tool effectively solves the problems of after-market complaints caused by leaks in current commercial vehicle cab roofs, as well as the complex manufacturing process and high manufacturing costs.

[0105] It should be noted that the description of the above technical solutions is illustrative only. This specification may be embodied in various forms and should not be construed as limiting the technical solutions set forth herein. Rather, these descriptions are provided to ensure that the disclosure of the present invention is thorough and complete and to fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solutions of the present invention are limited only by the scope of the claims.

[0106] The disclosures used to describe various aspects of the present specification and claims are merely examples, and therefore, the present specification and claims are not limited to the details shown. In the above description, when the detailed description of related known functions or configurations is determined to be unnecessary to obscure the key points of the present specification and claims, the detailed description will be omitted.

[0107] When “including,” “having,” and “comprising” are used in this specification, unless otherwise used, there may also be another part or other parts, and the terms used may generally be singular but may also represent plural forms.

[0108] Finally, it should be pointed out that the above content is a further detailed description of the invention in conjunction with specific implementation methods. It cannot be considered that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, simple replacements made without departing from the concept of the present invention should be considered to fall within the scope of protection of the present invention. The above embodiments are only more representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments, and there can be many variations. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention should be considered to fall within the scope of protection of the present invention.

[0109] At the same time, it should be noted that the description of the above technical solutions is exemplary, and this specification can be embodied in different forms and should not be construed as being limited to the technical solutions set forth herein. On the contrary, providing these descriptions will make the disclosure of the present invention thorough and complete, and will fully convey the scope disclosed in this specification to those skilled in the art. In addition, the technical solutions of the present invention are limited only by the scope of the claims. The features of the various embodiments of the present invention may be combined or spliced ​​with each other in part or in whole, and may be performed in various different configurations as will be fully understood by those skilled in the art. The embodiments of the present invention may be performed independently of each other, or may be performed together in a mutually dependent relationship.

[0110] For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or replacements can be made without departing from the concept of the present invention. The above structures should be regarded as belonging to the protection scope of the present invention.

Claims

1. A laser welding profiling tool for a commercial vehicle roof, comprising a fixture base (1), characterized in that: The fixture base (1) is provided with a plurality of support seats (2), the support seats (2) are provided with a plurality of positioning blocks (3) for positioning the top cover parts, the support seats (2) are also provided with an OG clamping mechanism (4) for clamping the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling, and the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling are provided with a clamping mechanism; The middle top cover laser welding profiling tool comprises a middle top cover laser welding profiling tool base plate (5), a tool quick change device (6) is installed in the middle of the middle top cover laser welding profiling tool base plate (5), the tool quick change device (6) is connected to the sling, a valve island (7) is installed at the right rear of the middle top cover laser welding profiling tool base plate (5), an electrical relay box (8) is installed at the left rear of the middle top cover laser welding profiling tool base plate (5), and the middle top cover laser welding profiling tool base plate (5) is also connected to a clamping mechanism; The side top cover laser welding profiling tool comprises a side top cover laser welding profiling tool base plate (9), a tool quick change device (6) is installed in the middle of the side top cover laser welding profiling tool base plate (9), the tool quick change device (6) is connected to the sling, and the front of the middle top cover laser welding profiling tool base plate (9) is also connected to a clamping mechanism; The clamping mechanism includes a plurality of one-way clamping mechanisms (10) for clamping the overlapped portion of the middle top cover and the side top cover, which are arranged on the left and right sides of the middle top cover laser welding profiling tooling bottom plate (5), a plurality of one-way clamping mechanisms (10) for clamping the overlapped portion of the middle top cover and the front top cover, and a plurality of two-way clamping mechanisms (11) for clamping the overlapped portion of the middle top cover and the front portion of the side top cover, and the overlapped portion of the middle top cover and the front top cover; The clamping mechanism comprises a plurality of one-way clamping mechanisms (10) arranged on the left and right sides of the side top cover laser welding profiling tooling bottom plate (9) for clamping the overlapping portion between the front top cover and the side top cover.

2. The laser welding profiling tool for commercial vehicle roof according to claim 1, characterized in that: The invention also comprises a modular electric control clamping system for controlling the clamping and releasing of the OG clamping mechanism (4) and the clamping mechanism.

3. A method for using the laser welding profiling tool for a commercial vehicle roof as claimed in claim 1, characterized in that: The steps include: A) Initial position state: put each device in the initial state; B) Parts assembly process: Assemble the top cover parts and the positioning block (3) in place according to the positioning joints; C) Profiling tooling working process: Install the middle cover laser welding profiling tooling and the side cover laser welding profiling tooling, and use the OG clamping mechanism (4) to clamp them, and then use the clamping mechanism to clamp the top cover parts; D) Laser welding process: The robot grabs the laser welding gun and completes the laser welding along the welding track line (12) between the middle top cover and the side top cover and the front top cover, and the welding track line (13) between the front top cover and the side top cover; E) Clamping mechanism release process: After laser welding is completed, the OG clamping mechanism (4) is first released, and then the clamping mechanisms on the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling are released; F) Process of restoring the initial state: the middle top cover laser welding profiling tooling and the side top cover laser welding profiling tooling are moved upward by the hoist to keep them consistent with the initial position state.

4. The method for using the laser welding profiling tool for a commercial vehicle roof according to claim 3, characterized in that: The middle top cover laser welding profiling tool comprises a middle top cover laser welding profiling tool base plate (5), a tool quick change device (6) is installed in the middle of the middle top cover laser welding profiling tool base plate (5), the tool quick change device (6) is connected to a sling, a valve island (7) is installed at the right rear of the middle top cover laser welding profiling tool base plate (5), an electrical relay box (8) is installed at the left rear of the middle top cover laser welding profiling tool base plate (5), and the middle top cover laser welding profiling tool base plate (5) is also connected to a clamping mechanism. In the step C), the sling connected to the tool quick change device (6) moves downward, and the middle top cover laser welding profiling tool base plate (5) moves downward accordingly. After confirming that it is in place, the OG clamping mechanism (4) is controlled to clamp through the valve island (7) and the electrical relay box (8), thereby completing the positioning of the middle top cover laser welding profiling tool base plate (5).

5. The method for using the laser welding profiling tool for commercial vehicle roof according to claim 4, characterized in that: The clamping mechanism includes a plurality of one-way clamping mechanisms (10) for clamping the overlap between the middle top cover and the side top cover, which are arranged on the left and right sides of the middle top cover laser welding profiling tool base (5), and also includes a plurality of one-way clamping mechanisms (10) for clamping the overlap between the middle top cover and the front top cover, and also includes a plurality of two-way clamping mechanisms (11) for clamping the overlap between the middle top cover and the front of the side top cover and the overlap between the middle top cover and the front of the front top cover. In the step C), the two-way clamping mechanism (10) and the one-way clamping mechanism (11) on the middle top cover laser welding profiling tool base (5) are controlled to clamp the top cover parts.

6. The method for using the laser welding profiling tool for commercial vehicle roof according to claim 3, characterized in that: The side top cover laser welding profiling tool comprises a side top cover laser welding profiling tool base plate (9), a tool quick change device (6) is installed in the middle of the side top cover laser welding profiling tool base plate (9), the tool quick change device (6) is connected to the sling, and the front of the middle top cover laser welding profiling tool base plate (9) is also connected to a clamping mechanism, the clamping mechanism comprises a plurality of clamping members arranged on the left and right sides of the side top cover laser welding profiling tool base plate (9) for clamping. The one-way clamping mechanism (10) at the joint of the front top cover and the side top cover, in the step C), the hanger connected to the tool quick change device (6) moves downward, and the side top cover laser welding profiling tooling base plate (9) follows and moves downward. After confirming that it is in place, the OG clamping mechanism (4) is controlled to clamp, completing the positioning of the side top cover laser welding profiling tooling base plate (9), and controlling the one-way clamping mechanism (10) on the side top cover laser welding profiling tooling base plate (9) to clamp the top cover parts.

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