Limiting device for sheet metal part based on laser welding machining

Abstract

The invention discloses a limiting device for a sheet metal part based on laser welding machining, and belongs to the technical field of laser welding machining. The limiting device for the sheet metal part based on laser welding machining comprises a containing table, sliding openings are formed in the two sides of the containing table, a first translation mechanism is arranged in the containing table, movable frames are arranged on the two sides of the top end of the containing table, and the movable end of the first translation mechanism is fixedly connected with the bottom ends of the inner sides of the movable frames; second translation mechanisms are installed on the adjacent sides of the pair of movable frames, the moving ends of the second translation mechanisms are connected with clamping mechanisms, the clamping ends of the clamping mechanisms are connected with limiting mechanisms, the first translation mechanisms comprise first bidirectional threaded rods, and the two ends of each first bidirectional threaded rod are sleeved with sliding rods; according to the sheet metal part welding device, after sheet metal parts are limited, the sheet metal parts can still be moved and aligned, the welding precision is improved, and the sheet metal part welding device has high practical value.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding processing, and in particular to a limiting device for sheet metal parts based on laser welding processing. Background Art

[0002] Sheet metal is a metal part made by sheet metal processing technology. It has the characteristics of high strength, high precision, good plasticity and good surface quality. It is widely used in electronics, automobile manufacturing, mechanical equipment, architectural decoration and other industries. During the laser welding process of sheet metal parts, the sheet metal parts need to be accurately positioned and limited to ensure the accuracy and quality of welding.

[0003] Based on the above, the inventors have found the following problem: after the current limiting device for sheet metal parts based on laser welding processing limits the sheet metal parts, the sheet metal parts cannot be moved and aligned, resulting in poor welding accuracy, which affects user use.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a limiting device based on laser welding processing of sheet metal parts is provided, in order to achieve a purpose with greater practical value. Summary of the invention

[0005] The purpose of the present invention is to provide a limiting device for sheet metal parts based on laser welding processing, so as to solve the problem that the sheet metal parts cannot be moved and aligned after the limiting device for sheet metal parts based on laser welding processing proposed in the above background technology limits the sheet metal parts, resulting in poor welding accuracy and affecting user use. In view of the above problems, the technical solution proposed by the present invention is:

[0006] A limiting device for sheet metal parts based on laser welding processing includes a placing table, both sides of the placing table are provided with sliding openings, a first translation mechanism is provided inside the placing table, both sides of the top of the placing table are provided with movable frames, the moving end of the first translation mechanism is fixedly connected to the inner bottom end of the movable frame, a pair of adjacent sides of the movable frame are installed with a second translation mechanism, the moving end of the second translation mechanism is connected to a clamping mechanism, and the clamping end of the clamping mechanism is connected to the limiting mechanism.

[0007] Furthermore, the first translation mechanism includes a first bidirectional threaded rod, both ends of the first bidirectional threaded rod are equipped with sliding rods, both ends of the sliding rod are fixedly connected to the inner bottom end of the movable frame, a first motor is installed on one end surface of the placing table, the output end of the first motor is connected to one end of the first bidirectional threaded rod, and the outer side of the sliding rod is slidably connected to the inner side of the sliding mouth.

[0008] Furthermore, the second translation mechanism includes a first retaining frame, the outer side of the first retaining frame is fixedly connected to a side of the movable frame, the inner side of the first retaining frame is rotatably connected to a one-way threaded rod, the outer side of the one-way threaded rod is sleeved with a first slider, a second motor is installed on one side of the first retaining frame, the output end of the second motor is connected to one end of the one-way threaded rod, one side of the first slider is slidably connected to a pair of first slide rails, and one side of the first slide rail is fixedly connected to the inner side of the first retaining frame.

[0009] Furthermore, the clamping mechanism includes a second retaining frame, the other side of the first slider is fixedly connected to the outer side of the second retaining frame, the inner side of the second retaining frame is rotatably connected to a second bidirectional threaded rod, both ends of the second bidirectional threaded rod are equipped with second sliders, a third motor is installed on one side of the second retaining frame, the output end of the third motor is connected to one end of the second bidirectional threaded rod, one side of the second slider is slidably connected to a pair of second slide rails, and one side of the second slide rails is fixedly connected to the inner side of the second retaining frame.

[0010] Furthermore, the limiting mechanism includes a clamping block, one end face of the clamping block is fixedly connected to the other side of the second sliding block, a plurality of sliding holes are opened on one side of the clamping block, a positioning rod is slidably connected to the inner side of the sliding hole, a spring is installed on the inner side of the positioning rod, one end of the spring is fixedly connected to the inner side of the sliding hole, and an anti-slip pad is installed on one end of the positioning rod.

[0011] Furthermore, a pair of fixing seats are installed on both sides of the placement table, and fixing holes are opened on the tops of the fixing seats.

[0012] Furthermore, a control panel is installed on one end surface of the placement table, and the control panel is electrically connected through wires.

[0013] On the other hand, the present invention provides a method for using a limiting device for sheet metal parts based on laser welding processing, comprising the following steps:

[0014] S1, installation preparation: fix the limit device to a suitable working position through the fixing seats 101 on both sides of the placement table 100, and fix it with bolts through the fixing holes at the top of the fixing seats 101 to ensure the stability of the device;

[0015] S2, placing the sheet metal parts: placing the sheet metal parts to be welded on the placement table 100;

[0016] S3, adjusting the clamping position: starting the first motor through the control panel, the first motor drives the first bidirectional threaded rod to rotate, drives the movable frame to move on both sides of the top of the placement table, and adjusts the spacing of the movable frame to adapt to the length of the sheet metal part; starting the second motor through the control panel, the second motor drives the unidirectional threaded rod to rotate, so that the first slider slides on the first slide rail, thereby adjusting the position of the clamping mechanism to adapt to the sheet metal part; starting the third motor through the control panel, the third motor drives the second bidirectional threaded rod to rotate, so that the second slider slides on the second slide rail, and adjusts the spacing of the clamping blocks so that they can clamp the sheet metal part;

[0017] S4, sheet metal limiting: When the clamping block clamps the sheet metal, the limiting mechanism starts to work, the positioning rod slides in the sliding hole, the anti-skid pad contacts the sheet metal, and the spring is compressed on the inside of the positioning rod, providing a certain buffering force, so that the anti-skid pad can fit the sheet metal tightly to prevent the sheet metal from moving during welding.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the limiting device for sheet metal based on laser welding processing realizes the placement of sheet metal by setting a placing table, the sliding openings on both sides cooperate with the first translation mechanism, so that the movable frame can move flexibly and adapt to sheet metals of different sizes, the coordinated action of the first translation mechanism, the second translation mechanism, the clamping mechanism and the limiting mechanism realizes the all-round limiting and fixing of the sheet metal, ensures the precision and quality of laser welding processing, and can realize that after the sheet metal is limited, the sheet metal can still be moved and aligned, the output end of the first motor is connected to one end of the first bidirectional threaded rod to realize the electric rotation of the first bidirectional threaded rod, the spacing of the movable frame can be accurately adjusted to adapt to sheet metals of different lengths, the sliding cooperation of the sliding rod and the sliding opening ensures the stability and linearity of the movement of the movable frame, and improves the precision and reliability of the device, the output end of the second motor is connected to one end of the unidirectional threaded rod to realize the electric rotation of the unidirectional threaded rod, so that the first slider slides on the first slide rail, the position of the clamping mechanism can be accurately adjusted, and the alignment of the sheet metal is convenient, and the first slide rail ensures the stability of the movement of the first slider, and improves The positioning accuracy of the clamping mechanism is improved. The output end of the third motor is connected to one end of the second bidirectional threaded rod to realize the electric rotation of the second bidirectional threaded rod, so that the second slider moves on the second slide rail, so as to accurately adjust the spacing of the clamping blocks and realize the firm clamping of sheet metal parts of different widths. The second slide rail ensures the smoothness of the movement of the second slider, improves the stability and reliability of the clamping, and realizes the direct limiting of the sheet metal part through the setting of the clamping block. The sliding hole provides a sliding track for the positioning rod, and the spring provides a buffer force on the inner side of the positioning rod, so that the anti-skid pad fits the sheet metal part closely to prevent the sheet metal part from moving or sliding during the welding process. The anti-skid pad increases the friction force and further improves the limiting effect. A pair of fixing seats are installed on both sides of the placing table, so that the device can be firmly fixed on the workbench to ensure that the device will not shake or move during the welding process, and the stability and accuracy of the welding are improved. A control panel is installed on one end surface of the placing table to realize the controllable equipment and increase the convenience of product use. The present invention can effectively realize that after the sheet metal part is limited, the sheet metal part can still be moved and aligned, improve the welding accuracy, and has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is one of the three-dimensional structural schematic diagrams disclosed in the embodiment of the present invention;

[0020] Figure 2 This is the second schematic diagram of the three-dimensional structure disclosed in the embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of a three-dimensional structure of a placement table disclosed in an embodiment of the present invention;

[0022] Figure 4It is a schematic diagram of a disassembled three-dimensional structure of a limiting device disclosed in an embodiment of the present invention;

[0023] Figure 5 A cross-sectional view of a clamping block disclosed in an embodiment of the present invention;

[0024] Figure 6 This is a block diagram of the method disclosed in an embodiment of the present invention.

[0025] In the figure: 100, placing table; 10001, sliding mouth; 101, fixing seat; 102, first translation mechanism; 10201, first two-way threaded rod; 10202, sliding rod; 10203, first motor; 103, movable frame; 104, second translation mechanism; 10401, first retaining frame; 10402, one-way threaded rod; 10403, first slider; 10404, first slide rail; 10405, second motor; 105, clamping mechanism; 10501, second retaining frame; 10502, second two-way threaded rod; 10503, second slider; 10504, second slide rail; 10505, third motor; 106, limiting mechanism; 10601, clamping block; 10602, sliding hole; 10603, positioning rod; 10604, anti-slip pad; 10605, spring; 107, control panel. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 5The present invention provides a technical solution: a limiting device for sheet metal parts based on laser welding processing, comprising a placing table 100, both sides of the placing table 100 are provided with sliding openings 10001, a first translation mechanism 102 is provided inside the placing table 100, both sides of the top of the placing table 100 are provided with movable frames 103, the moving end of the first translation mechanism 102 is fixedly connected to the inner bottom end of the movable frame 103, a pair of adjacent sides of the movable frames 103 are installed with second translation mechanisms 104, the moving end of the second translation mechanism 104 is connected with a clamping mechanism 105, and the clamping mechanism 105 is provided on the inner side of the movable frame 103. The clamping end of the holding mechanism 105 is connected to the limiting mechanism 106. The placement of the sheet metal is achieved through the setting of the placement table 100. The sliding openings 10001 on both sides cooperate with the first translation mechanism 102 to enable the movable frame 103 to move flexibly to adapt to sheet metal parts of different sizes. The coordinated action of the first translation mechanism 102, the second translation mechanism 104, the clamping mechanism 105 and the limiting mechanism 106 can achieve all-round limiting and fixation of the sheet metal parts, ensuring the accuracy and quality of the laser welding process, and can achieve that after the sheet metal parts are limited, the sheet metal parts can still be moved and aligned.

[0028] According to an embodiment of the present invention, further, the first translation mechanism 102 includes a first bidirectional threaded rod 10201, both ends of the first bidirectional threaded rod 10201 are equipped with sliding rods 10202, both ends of the sliding rod 10202 are fixedly connected to the inner bottom end of the movable frame 103, and one end surface of the placement table 100 is installed with a first motor 10203, the output end of the first motor 10203 is connected to one end of the first bidirectional threaded rod 10201, the outer side of the sliding rod 10202 is slidably connected to the inner side of the sliding mouth 10001, and the output end of the first motor 10203 is connected to one end of the first bidirectional threaded rod 10201 to realize the electric rotation of the first bidirectional threaded rod 10201, which can accurately adjust the spacing of the movable frame 103 to adapt to sheet metal parts of different lengths, and the sliding cooperation between the sliding rod 10202 and the sliding mouth 10001 ensures the stability and linearity of the movement of the movable frame 103, thereby improving the accuracy and reliability of the device.

[0029] According to an embodiment of the present invention, further, the second translation mechanism 104 includes a first holding frame 10401, the outer side of the first holding frame 10401 is fixedly connected to one side of the movable frame 103, the inner side of the first holding frame 10401 is rotatably connected to a one-way threaded rod 10402, the outer side of the one-way threaded rod 10402 is sleeved with a first slider 10403, one side of the first holding frame 10401 is installed with a second motor 10405, the output end of the second motor 10405 is connected to one end of the one-way threaded rod 10402, and one side of the first slider 10403 is slidable. A pair of first slide rails 10404 are dynamically connected, one side of the first slide rail 10404 is fixedly connected to the inner side of the first retaining frame 10401, and the output end of the second motor 10405 is connected to one end of the one-way threaded rod 10402 to realize electric rotation of the one-way threaded rod 10402, so that the first slider 10403 can slide on the first slide rail 10404, and the position of the clamping mechanism 105 can be accurately adjusted to facilitate the alignment of sheet metal parts. The first slide rail 10404 ensures the smooth movement of the first slider 10403 and improves the positioning accuracy of the clamping mechanism 105.

[0030] In one embodiment of the present invention, further, the clamping mechanism 105 includes a second holder 10501, the other side of the first slider 10403 is fixedly connected to the outer side of the second holder 10501, the inner side of the second holder 10501 is rotatably connected to the second bidirectional threaded rod 10502, both ends of the second bidirectional threaded rod 10502 are equipped with second sliders 10503, one side of the second holder 10501 is installed with a third motor 10505, the output end of the third motor 10505 is connected to one end of the second bidirectional threaded rod 10502, and one side of the second slider 10503 slides A pair of second slide rails 10504 are connected, one side of the second slide rail 10504 is fixedly connected to the inner side of the second retaining frame 10501, and is connected through the output end of the third motor 10505 and one end of the second bidirectional threaded rod 10502 to realize electric rotation of the second bidirectional threaded rod 10502, so that the second slider 10503 moves on the second slide rail 10504, thereby accurately adjusting the spacing of the clamping blocks 10601 to achieve firm clamping of sheet metal parts of different widths. The second slide rail 10504 ensures the smooth movement of the second slider 10503 and improves the stability and reliability of clamping.

[0031] In one embodiment of the present invention, further, the limiting mechanism 106 includes a clamping block 10601, one end surface of the clamping block 10601 is fixedly connected to the other side of the second slider 10503, one side of the clamping block 10601 is provided with a plurality of sliding holes 10602, the inner side of the sliding hole 10602 is slidably connected with a positioning rod 10603, the inner side of the positioning rod 10603 is installed with a spring 10605, one end of the spring 10605 is fixed to the inner side of the sliding hole 10602 Connection, an anti-skid pad 10604 is installed at one end of the positioning rod 10603, and the clamping block 10601 is set to achieve direct limiting of the sheet metal. The sliding hole 10602 provides a sliding track for the positioning rod 10603, and the spring 10605 provides a buffering force on the inner side of the positioning rod 10603, so that the anti-skid pad 10604 fits tightly to the sheet metal to prevent the sheet metal from moving or sliding during welding. The anti-skid pad 10604 increases the friction and further improves the limiting effect.

[0032] According to an embodiment of the present invention, a pair of fixing seats 101 are further installed on both sides of the placement table 100, and fixing holes are opened on the tops of the fixing seats 101. By installing a pair of fixing seats 101 on both sides of the placement table 100, it is convenient to firmly fix the device on the workbench, ensuring that the device will not shake or move during the welding process, thereby improving the stability and accuracy of welding.

[0033] In one embodiment of the present invention, a control panel 107 is further installed on one end surface of the placement table 100, and the control panel 107 is electrically connected through wires. By installing the control panel 107 on one end surface of the placement table 100, the device can be controlled and the convenience of product use is increased.

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 6 The present invention provides a technical solution: a method for using a limiting device for sheet metal parts based on laser welding processing, comprising the following steps:

[0036] S1, installation preparation: fix the limit device to a suitable working position through the fixing seats 101 on both sides of the placement table 100, and fix it with bolts through the fixing holes at the top of the fixing seats 101 to ensure the stability of the device;

[0037] S2, placing the sheet metal parts: placing the sheet metal parts to be welded on the placement table 100;

[0038] S3, adjust the clamping position: start the first motor 10203 through the control panel 107, the first motor 10203 drives the first bidirectional threaded rod 10201 to rotate, drives the movable frame 103 to move on both sides of the top of the placement table 100, and adjusts the spacing of the movable frame 103 to adapt to the length of the sheet metal part; start the second motor 10405 through the control panel 107, the second motor 10405 drives the unidirectional threaded rod 10402 to rotate, so that the first slider 10403 slides on the first slide rail 10404, thereby adjusting the position of the clamping mechanism 105 to adapt to the sheet metal part; start the third motor 10505 through the control panel 107, the third motor 10505 drives the second bidirectional threaded rod 10502 to rotate, so that the second slider 10503 slides on the second slide rail 10504, and adjusts the spacing of the clamping blocks 10601 so that they can clamp the sheet metal part;

[0039] S4, sheet metal limiting: when the clamping block 10601 clamps the sheet metal, the limiting mechanism 106 starts to work, the positioning rod 10603 slides in the sliding hole 10602, the anti-skid pad 10604 contacts the sheet metal, and the spring 10605 is compressed on the inside of the positioning rod 10603, providing a certain buffering force, so that the anti-skid pad 10604 can fit closely to the sheet metal to prevent the sheet metal from moving during the welding process.

[0040] Specifically, the working principle of the limiting device for sheet metal parts based on laser welding processing is as follows: when in use, the sheet metal parts are placed by setting up the placing table 100, and the sliding openings 10001 on both sides cooperate with the first translation mechanism 102 to enable the movable frame 103 to move flexibly to adapt to sheet metal parts of different sizes. The first translation mechanism 102, the second translation mechanism 104, the clamping mechanism 105 and the limiting mechanism 106 work together to achieve all-round limiting and fixing of the sheet metal parts, ensuring the accuracy and quality of the laser welding processing, and it can be achieved that after the sheet metal parts are limited, the sheet metal parts can still be moved and aligned, and the output end of the first motor 10203 is connected to one end of the first bidirectional threaded rod 10201, The first bidirectional threaded rod 10201 is electrically rotated to accurately adjust the spacing of the movable frame 103 to adapt to sheet metal parts of different lengths. The sliding cooperation between the sliding rod 10202 and the sliding mouth 10001 ensures the stability and linearity of the movement of the movable frame 103, and improves the accuracy and reliability of the device. The output end of the second motor 10405 is connected to one end of the unidirectional threaded rod 10402 to achieve the electric rotation of the unidirectional threaded rod 10402, so that the first slider 10403 slides on the first slide rail 10404, and the position of the clamping mechanism 105 can be accurately adjusted to facilitate the alignment of sheet metal parts. The first slide rail 10404 ensures the stability of the movement of the first slider 10403, and improves the accuracy and reliability of the device. The positioning accuracy of the clamping mechanism 105 is improved. The output end of the third motor 10505 is connected to one end of the second bidirectional threaded rod 10502 to realize the electric rotation of the second bidirectional threaded rod 10502, so that the second slider 10503 moves on the second slide rail 10504, thereby accurately adjusting the spacing of the clamping block 10601 to achieve a firm clamping of sheet metal parts of different widths. The second slide rail 10504 ensures the smooth movement of the second slider 10503 and improves the stability and reliability of clamping. The sheet metal part is directly limited by the setting of the clamping block 10601. The sliding hole 10602 provides a sliding track for the positioning rod 10603. The spring 10605 is on the positioning rod 1 The inner side of 0603 provides a buffering force, so that the anti-skid pad 10604 fits tightly against the sheet metal to prevent the sheet metal from moving or sliding during welding. The anti-skid pad 10604 increases the friction and further improves the limiting effect. A pair of fixing seats 101 are installed on both sides of the placement table 100, which facilitates the device to be firmly fixed on the workbench to ensure that the device will not shake or move during the welding process, thereby improving the stability and accuracy of welding. A control panel 107 is installed on one end face of the placement table 100 to achieve controllable equipment and increase the convenience of product use. The present invention can effectively achieve that after limiting the sheet metal, the sheet metal can still be moved and aligned, thereby improving welding accuracy and having high practical value.

Claims

1. A limiting device for sheet metal parts based on laser welding processing, characterized in that: The invention comprises a placing table (100), both sides of which are provided with sliding openings (10001), a first translation mechanism (102) is provided inside the placing table (100), both sides of the top of the placing table (100) are provided with movable frames (103), a moving end of the first translation mechanism (102) is fixedly connected to the inner bottom end of the movable frame (103), a pair of adjacent sides of the movable frame (103) are installed with a second translation mechanism (104), a moving end of the second translation mechanism (104) is connected to a clamping mechanism (105), and a clamping end of the clamping mechanism (105) is connected to a limiting mechanism (106).

2. A limiting device for sheet metal parts based on laser welding processing according to claim 1, characterized in that: The first translation mechanism (102) comprises a first bidirectional threaded rod (10201), both ends of the first bidirectional threaded rod (10201) are fitted with sliding rods (10202), both ends of the sliding rod (10202) are fixedly connected to the inner bottom end of the movable frame (103), one end surface of the placement table (100) is installed with a first motor (10203), the output end of the first motor (10203) is connected to one end of the first bidirectional threaded rod (10201), and the outer side of the sliding rod (10202) is slidably connected to the inner side of the sliding opening (10001).

3. A limiting device for sheet metal parts based on laser welding processing according to claim 2, characterized in that: The second translation mechanism (104) comprises a first retaining frame (10401), the outer side of the first retaining frame (10401) is fixedly connected to one side of the movable frame (103), the inner side of the first retaining frame (10401) is rotatably connected to a one-way threaded rod (10402), the outer side of the one-way threaded rod (10402) is sleeved with a first slider (10403), a second motor (10405) is installed on one side of the first retaining frame (10401), the output end of the second motor (10405) is connected to one end of the one-way threaded rod (10402), one side of the first slider (10403) is slidably connected to a pair of first slide rails (10404), and one side of the first slide rail (10404) is fixedly connected to the inner side of the first retaining frame (10401).

4. A limiting device for sheet metal parts based on laser welding processing according to claim 3, characterized in that: The clamping mechanism (105) comprises a second retaining frame (10501), the other side of the first slider (10403) is fixedly connected to the outer side of the second retaining frame (10501), the inner side of the second retaining frame (10501) is rotatably connected to a second bidirectional threaded rod (10502), both ends of the second bidirectional threaded rod (10502) are fitted with second sliders (10503), a third motor (10505) is installed on one side of the second retaining frame (10501), the output end of the third motor (10505) is connected to one end of the second bidirectional threaded rod (10502), a pair of second slide rails (10504) are slidably connected to one side of the second slider (10503), and one side of the second slide rail (10504) is fixedly connected to the inner side of the second retaining frame (10501).

5. A limiting device for sheet metal parts based on laser welding processing according to claim 4, characterized in that: The limiting mechanism (106) comprises a clamping block (10601), one end face of the clamping block (10601) is fixedly connected to the other side of the second sliding block (10503), one side of the clamping block (10601) is provided with a plurality of sliding holes (10602), the inner side of the sliding hole (10602) is slidably connected to a positioning rod (10603), the inner side of the positioning rod (10603) is installed with a spring (10605), one end of the spring (10605) is fixedly connected to the inner side of the sliding hole (10602), and one end of the positioning rod (10603) is installed with an anti-slip pad (10604).

6. A limiting device for sheet metal parts based on laser welding processing according to claim 5, characterized in that: A pair of fixing seats (101) are installed on both sides of the placement platform (100), and fixing holes are provided at the top ends of the fixing seats (101).

7. A limiting device for sheet metal parts based on laser welding processing according to claim 6, characterized in that: A control panel (107) is installed on one end surface of the placement table (100), and the control panel (107) is electrically connected to the control panel via wires.

8. A method for using a limiting device for sheet metal parts based on laser welding, characterized in that: A limiting device for sheet metal parts based on laser welding processing as described in claim 7 comprises the following steps: S1, installation preparation: fix the limit device to a suitable working position through the fixing seats 101 on both sides of the placement table 100, and fix it with bolts through the fixing holes at the top of the fixing seats 101 to ensure the stability of the device; S2, placing the sheet metal parts: placing the sheet metal parts to be welded on the placement table 100; S3, adjusting the clamping position: starting the first motor (10203) through the control panel (107), the first motor (10203) drives the first bidirectional threaded rod (10201) to rotate, drives the movable frame (103) to move on both sides of the top of the placement table (100), adjusts the spacing of the movable frame (103) to adapt to the length of the sheet metal part, starts the second motor (10405) through the control panel (107), and the second motor (10405) drives the unidirectional threaded rod (10402 ) is rotated to make the first slider (10403) slide on the first slide rail (10404), thereby adjusting the position of the clamping mechanism (105) to adapt it to the sheet metal part, and starting the third motor (10505) through the control panel (107), the third motor (10505) drives the second bidirectional threaded rod (10502) to rotate, so that the second slider (10503) slides on the second slide rail (10504), and the spacing of the clamping blocks (10601) is adjusted so that it can clamp the sheet metal part; S4, sheet metal limiting: when the clamping block (10601) clamps the sheet metal, the limiting mechanism (106) starts to work, the positioning rod (10603) slides in the sliding hole (10602), the anti-skid pad (10604) contacts the sheet metal, and the spring (10605) is compressed on the inner side of the positioning rod (10603), providing a certain buffering force, so that the anti-skid pad (10604) can fit the sheet metal tightly to prevent the sheet metal from moving during the welding process.

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