Welding machine with clamping mechanism and clamping method

Abstract

The invention discloses a welding machine with a clamping mechanism and a clamping method. The welding machine comprises a base, a welding machine body is fixedly connected to the rear side of the top of the base, a motor is fixedly connected to the top of the inner wall of the welding machine body, a lifting plate is arranged at the bottom of the motor, and first screw rods are in threaded connection to the two sides of the lifting plate. A second screw rod is rotated, the second screw rod moves upwards, the second screw rod drives a force applying plate to move upwards, the distance between the force applying plate and a pressing plate is increased, the compressed degree of a spring is reduced, after the compressed degree of the spring is reduced, the elastic force generated by the spring is also reduced, and when the elastic force of the spring is weak, the downward clamping force of the pressing plate is reduced; the clamping force of the pressing plate can be adjusted and changed according to the structural strength of the workpiece, the advantage of lossless clamping of the workpiece is achieved, in the using process of the clamping mechanism of the welding machine, the clamping force can be adjusted, the appearance of the workpiece cannot be damaged by clamping, and the machining safety of the workpiece is improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding machines, in particular to a welding machine with a clamping mechanism and a clamping method. Background Art

[0002] In automobile manufacturing, welding machines are used to weld parts such as body frames and chassis. For example, the welding of automobile frames requires the use of a variety of welding machines, including resistance welding machines for spot welding and arc welding robots for welding parts such as the frame's reinforcement beams to ensure the strength and stability of the frame.

[0003] In the field of mechanical manufacturing, it is used to weld various mechanical parts, such as machine tool beds, lifting arms of construction machinery, etc. For the welding of large machine tool beds, the use of submerged arc welding machines can ensure the welding quality and improve the accuracy and service life of the machine tools.

[0004] During the welding process of the welding machine, a clamping mechanism is required. During the use of the transmission welding machine clamping mechanism, its clamping force is fixed. When encountering a hollow and thin-walled workpiece, the fixed clamping force can easily damage the workpiece, causing deformation and depression of the workpiece shape, reducing the safety of workpiece processing. Summary of the invention

[0005] In order to solve the problems raised in the above-mentioned background technology, the purpose of the present invention is to provide a welding machine and a clamping method with a clamping mechanism, which have the advantage of non-destructive clamping of workpieces and solve the problem that the clamping force of the welding machine clamping mechanism is fixed during use. When encountering a hollow and thin-walled workpiece, the fixed clamping force can easily damage the workpiece, causing deformation and depression of the workpiece's shape, thereby reducing the safety of workpiece processing.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a welding machine with a clamping mechanism and a clamping method, comprising a base, a welding machine body is fixedly connected to the rear side of the top of the base, a motor is fixedly connected to the top of the inner wall of the welding machine body, a lifting plate is arranged at the bottom of the motor, screw rods are threadedly connected to both sides of the lifting plate, a gear is fixedly connected to the surface of the screw rod and the output end of the motor, a toothed belt is sleeved on the surface of the gear, lifting rods are fixedly connected to the four corners of the top of the lifting plate, the top of the lifting rod passes through the top of the base, the top of the lifting rod is rotatably connected to a clamping frame, the surface of the clamping frame is rotatably connected to a limiting plate, the bottom of the limiting plate is movably connected to a mounting block, the bottom of the mounting block is fixedly connected to the top of the base, and the bottom of the clamping frame is movably connected to a fixing mechanism.

[0007] As a preferred embodiment of the present invention, the fixing mechanism includes a pressing plate, which is located at the bottom of the clamping frame, and the front and rear sides of the top of the pressing plate are fixedly connected with sliding rods, the top of the sliding rod passes through the top of the clamping frame, the top of the sliding rod is fixedly connected to a limiting block, the top of the pressing plate is fixedly connected to a spring, the top of the spring is fixedly connected to a force plate, the top of the force plate is movably connected to screw rod 2, and the surface of screw rod 2 is connected to the internal thread of the clamping frame.

[0008] As a preferred embodiment of the present invention, a knob is fixedly connected to the top of the second screw rod, and the knob is located at the top of the clamping frame.

[0009] As a preferred embodiment of the present invention, a threaded sleeve is sleeved on the surface of the second screw rod, and the bottom of the threaded sleeve is fixedly connected to the top of the clamping frame.

[0010] As a preferred embodiment of the present invention, a reinforcement block is fixedly connected to the surface of the lifting rod, and the bottom of the reinforcement block is fixedly connected to the top of the lifting plate.

[0011] As a preferred embodiment of the present invention, vertical rods are provided at four corners inside the lifting plate, and surfaces of the vertical rods are fixedly connected to the inner wall of the base.

[0012] As a preferred embodiment of the present invention, a stabilizing sleeve is sleeved on the surface of the vertical rod, and the bottom of the stabilizing sleeve is fixedly connected to the top of the lifting plate.

[0013] As a preferred embodiment of the present invention, weight-reducing grooves are provided on the front side and the rear side of the top of the lifting plate, and the weight-reducing grooves are located inside the base.

[0014] As preferred embodiment of the present invention, the method comprises the following steps:

[0015] S1: When the welding machine is working, place the workpiece to be processed on the top of the base, adjust the processing movement to the bottom of the pressing plate, and when the workpiece is fixed, execute S2;

[0016] S2: Start the motor, the motor drives the gear and the toothed belt to rotate, the gear drives the screw to rotate, the screw drives the lifting plate to move upward, the lifting plate drives the clamping frame to rotate with the hinge of the limit plate as the center, and the clamping frame will drive the limit plate to flip inward at the intersection of the mounting block during the rotation process. When the clamping frame rotates to a horizontal state, it stops rotating, and the pressing plate also rotates to a horizontal state. When the pressing plate contacts the workpiece, the workpiece is fixed. When the clamping force of the pressing plate needs to be adjusted according to the strength of the workpiece, execute S3;

[0017] S3: When the workpiece is thin-walled and has a fragile structure, rotate screw 2, which moves upward, and drives the force plate upward. The distance between the force plate and the pressing plate increases, and the degree of compression of the spring decreases. When the degree of compression of the spring decreases, the elastic force generated by the spring also decreases. When the elastic force of the spring is weak, the downward clamping force of the pressing plate decreases. The clamping force of the pressing plate can be adjusted according to the structural strength of the workpiece.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention rotates screw rod 2, screw rod 2 moves upward, screw rod 2 drives the force plate to move upward, the spacing between the force plate and the pressing plate increases, the degree of compression of the spring decreases, when the degree of compression of the spring weakens, the elastic force generated by the spring also weakens accordingly, when the elastic force of the spring is weak, the downward clamping force of the pressing plate weakens, the clamping force of the pressing plate can be adjusted according to the structural strength of the workpiece, and has the advantage of non-destructive clamping of the workpiece, the clamping force of the welding machine clamping mechanism can be adjusted during use, the shape of the workpiece will not be damaged by clamping, and the safety of workpiece processing is improved.

[0020] 2. The present invention can adjust the clamping force of the pressing plate by setting a fixing mechanism, thereby avoiding the clamping force of the pressing plate being fixed, which may cause easy damage to the workpiece, and improving the use effect of the pressing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 A three-dimensional diagram of the lifting plate of the present invention;

[0023] Figure 3 A three-dimensional diagram of the weight-reducing tank of the present invention;

[0024] Figure 4 A three-dimensional diagram of the clamping frame of the present invention;

[0025] Figure 5 For the present invention Figure 3 Enlarged structural diagram at point A in the middle.

[0026] In the figure: 1. base; 2. welding machine body; 3. motor; 4. lifting plate; 5. screw rod 1; 6. gear; 7. toothed belt; 8. lifting rod; 9. clamping frame; 10. limit plate; 11. mounting block; 12. fixing mechanism; 121. pressing plate; 122. sliding rod; 123. limit block; 124. spring; 125. force plate; 126. screw rod 2; 13. knob; 14. screw sleeve; 15. reinforcement block; 16. vertical rod; 17. stabilizing sleeve; 18. weight reduction groove. DETAILED DESCRIPTION

[0027] 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.

[0028] like Figures 1 to 5 As shown, a welding machine with a clamping mechanism and a clamping method provided by the present invention include a base 1, a welding machine body 2 is fixedly connected to the rear side of the top of the base 1, a motor 3 is fixedly connected to the top of the inner wall of the welding machine body 2, a lifting plate 4 is arranged at the bottom of the motor 3, screws 5 are threadedly connected to both sides of the lifting plate 4, a gear 6 is fixedly connected to the surface of the screw 5 and the output end of the motor 3, a toothed belt 7 is sleeved on the surface of the gear 6, a lifting rod 8 is fixedly connected to the four corners of the top of the lifting plate 4, the top of the lifting rod 8 passes through the top of the base 1, the top of the lifting rod 8 is rotatably connected to a clamping frame 9, the surface of the clamping frame 9 is rotatably connected to a limiting plate 10, the bottom of the limiting plate 10 is movably connected to a mounting block 11, the bottom of the mounting block 11 is fixedly connected to the top of the base 1, and the bottom of the clamping frame 9 is movably connected to a fixing mechanism 12.

[0029] refer to Figure 4 The fixing mechanism 12 includes a pressing plate 121, which is located at the bottom of the clamping frame 9. The front and rear sides of the top of the pressing plate 121 are fixedly connected with a sliding rod 122. The top of the sliding rod 122 penetrates to the top of the clamping frame 9. The top of the sliding rod 122 is fixedly connected to a limiting block 123. The top of the pressing plate 121 is fixedly connected with a spring 124. The top of the spring 124 is fixedly connected with a force plate 125. The top of the force plate 125 is movably connected with a screw rod 126. The surface of the screw rod 126 is connected to the internal thread of the clamping frame 9.

[0030] As a technical optimization solution of the present invention, by setting a fixing mechanism 12, the clamping force of the pressing plate 121 can be adjusted to avoid the clamping force of the pressing plate 121 being fixed, which may cause easy damage to the workpiece, thereby improving the use effect of the pressing plate 121.

[0031] refer to Figure 4 The top of the screw rod 126 is fixedly connected with a knob 13, and the knob 13 is located at the top of the clamping frame 9.

[0032] As a technical optimization solution of the present invention, by providing the knob 13, it is possible to facilitate the user to rotate the screw rod 126, thereby preventing the screw rod 126 from being difficult to pinch by the user, which makes the screw rod 126 difficult to rotate, thereby improving the rotation efficiency of the screw rod 126.

[0033] refer to Figure 4 The surface of the screw rod 126 is sleeved with a screw sleeve 14 , and the bottom of the screw sleeve 14 is fixedly connected to the top of the clamping frame 9 .

[0034] As a technical optimization solution of the present invention, by setting the screw sleeve 14, the threaded connection area between the screw 126 and the clamping frame 9 can be increased, thereby avoiding the small threaded connection area between the screw 126 and the clamping frame 9, which leads to unstable cooperation between the screw 126 and the clamping frame 9, and improving the use stability of the screw 126 and the clamping frame 9.

[0035] refer to Figure 5 A reinforcement block 15 is fixedly connected to the surface of the lifting rod 8 , and the bottom of the reinforcement block 15 is fixedly connected to the top of the lifting plate 4 .

[0036] As a technical optimization solution of the present invention, by setting a reinforcement block 15, the connection between the lifting rod 8 and the lifting plate 4 can be reinforced to avoid the lifting rod 8 and the lifting plate 4 from breaking during use, preventing the lifting rod 8 and the lifting plate 4 from failing to cooperate, and improving the use effect of the lifting rod 8 and the lifting plate 4.

[0037] refer to Figure 5 Vertical rods 16 are provided at the four corners inside the lifting plate 4 , and the surfaces of the vertical rods 16 are fixedly connected to the inner wall of the base 1 .

[0038] As a technical optimization solution of the present invention, by setting the vertical rod 16, the lifting plate 4 can be stabilized in sliding, avoiding shaking of the lifting plate 4 during sliding movement, causing the lifting plate 4 to loosen, and improving the sliding stability of the lifting plate 4.

[0039] refer to Figure 5 A stabilizing sleeve 17 is sleeved on the surface of the vertical rod 16 , and the bottom of the stabilizing sleeve 17 is fixedly connected to the top of the lifting plate 4 .

[0040] As a technical optimization solution of the present invention, by setting a stabilizing sleeve 17, the sliding connection between the lifting plate 4 and the sliding rod 122 can be reinforced to avoid breakage of the lifting plate 4 and the sliding rod 122 during use, to prevent the lifting plate 4 and the sliding rod 122 from failing to cooperate, and to improve the use effect of the lifting plate 4 and the sliding rod 122.

[0041] refer to Figure 5 The front and rear sides of the top of the lifting plate 4 are both provided with weight-reducing grooves 18 , and the weight-reducing grooves 18 are located inside the base 1 .

[0042] As a technical optimization solution of the present invention, by setting the weight-reducing groove 18, the weight of the lifting plate 4 can be reduced, so that the lifting plate 4 is not difficult to be pulled during use, resulting in high working pressure of the motor 3, thereby reducing the working pressure of the motor 3.

[0043] refer to Figure 2 , the method is as follows:

[0044] S1: When the welding machine body 2 is working, the workpiece to be processed is placed on the top of the base 1, and the processing movement is adjusted to the bottom of the pressing plate 121. When the workpiece is fixed, S2 is executed;

[0045] S2: Start the motor 3, the motor 3 drives the gear 6 and the toothed belt 7 to rotate, the gear 6 drives the screw 5 to rotate, the screw 5 drives the lifting plate 4 to move upward, the lifting plate 4 drives the clamping frame 9 to rotate around the hinge of the limit plate 10, and the clamping frame 9 will drive the limit plate 10 to flip inward at the intersection of the mounting block 11 during the rotation process. When the clamping frame 9 rotates to a horizontal state, it stops rotating, and the pressing plate 121 also rotates to a horizontal state. When the pressing plate 121 contacts the workpiece, the workpiece is fixed. When the clamping force of the pressing plate 121 needs to be adjusted according to the strength of the workpiece, execute S3;

[0046] S3: When the wall of the workpiece to be processed is thin and the structure is relatively fragile, the screw rod 126 is rotated and the screw rod 126 moves upward. The screw rod 126 drives the force plate 125 to move upward, and the distance between the force plate 125 and the pressing plate 121 increases. The degree of compression of the spring 124 decreases. When the degree of compression of the spring 124 decreases, the elastic force generated by the spring 124 also decreases. When the elastic force of the spring 124 is weak, the downward clamping force of the pressing plate 121 is weakened. The clamping force of the pressing plate 121 can be adjusted according to the structural strength of the workpiece.

[0047] The working principle and use process of the present invention are as follows: when in use, the processing movement is adjusted to the bottom of the pressing plate 121, and when the workpiece is fixed, the motor 3 is started, the motor 3 drives the gear 6 and the toothed belt 7 to rotate, the gear 6 drives the screw 15 to rotate, the screw 15 drives the lifting plate 4 to move upward, and the lifting plate 4 drives the clamping frame 9 to rotate around the hinge of the limit plate 10. During the rotation of the clamping frame 9, the limit plate 10 will be driven to flip inward at the intersection of the mounting block 11. When the clamping frame 9 rotates to a horizontal state, it stops rotating, and the pressing plate 121 also rotates to a horizontal state. When the pressing plate 121 contacts the workpiece, the workpiece is fixed. When it is necessary to adjust the clamping force of the pressing plate 121 according to the strength of the workpiece, when the workpiece to be processed has a thin wall and a fragile structure, rotate the screw 126, the screw 126 moves upward, the screw 126 drives the force plate 125 to move upward, the distance between the force plate 125 and the pressing plate 121 increases, and the degree of compression of the spring 124 decreases. When the degree of compression of the spring 124 weakens, the elastic force generated by the spring 124 also weakens. When the elastic force of the spring 124 is weak, the downward clamping force of the pressing plate 121 is weakened, and the clamping force of the pressing plate 121 can be adjusted according to the structural strength of the workpiece.

[0048] In summary: the welding machine and clamping method with a clamping mechanism, through the coordinated use of a base 1, a welding machine body 2, a motor 3, a lifting plate 4, a screw 5, a gear 6, a toothed belt 7, a lifting rod 8, a clamping frame 9, a limit plate 10, a mounting block 11 and a fixing mechanism 12, solves the problem that the clamping force of the welding machine clamping mechanism is fixed during use. When encountering a hollow and thin-walled workpiece, the fixed clamping force is easy to damage the workpiece, resulting in deformation and depression of the workpiece shape, thereby reducing the safety of workpiece processing.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding machine with a clamping mechanism, comprising a base (1), characterized in that: The rear side of the top of the base (1) is fixedly connected to a welding machine body (2), the top of the inner wall of the welding machine body (2) is fixedly connected to a motor (3), the bottom of the motor (3) is provided with a lifting plate (4), both sides of the lifting plate (4) are threadedly connected to a screw rod (5), the surface of the screw rod (5) and the output end of the motor (3) are fixedly connected to a gear (6), the surface of the gear (6) is sleeved with a toothed belt (7), the four corners of the top of the lifting plate (4) are fixedly connected to a lifting rod (8), the top of the lifting rod (8) passes through the top of the base (1), the top of the lifting rod (8) is rotatably connected to a clamping frame (9), the surface of the clamping frame (9) is rotatably connected to a limit plate (10), the bottom of the limit plate (10) is movably connected to a mounting block (11), the bottom of the mounting block (11) is fixedly connected to the top of the base (1), and the bottom of the clamping frame (9) is movably connected to a fixing mechanism (12).

2. A welding machine with a clamping mechanism according to claim 1, characterized in that: The fixing mechanism (12) comprises a pressing plate (121), wherein the pressing plate (121) is located at the bottom of the clamping frame (9), the front side and the rear side of the top of the pressing plate (121) are fixedly connected with a sliding rod (122), the top of the sliding rod (122) penetrates to the top of the clamping frame (9), the top of the sliding rod (122) is fixedly connected with a limiting block (123), the top of the pressing plate (121) is fixedly connected with a spring (124), the top of the spring (124) is fixedly connected with a force plate (125), the top of the force plate (125) is movably connected with a screw rod 2 (126), the surface of the screw rod 2 (126) is connected with the internal thread of the clamping frame (9).

3. A welding machine with a clamping mechanism according to claim 2, characterized in that: The top of the second screw rod (126) is fixedly connected with a knob (13), and the knob (13) is located at the top of the clamping frame (9).

4. A welding machine with a clamping mechanism according to claim 2, characterized in that: The surface of the second screw rod (126) is sleeved with a screw sleeve (14), and the bottom of the screw sleeve (14) is fixedly connected to the top of the clamping frame (9).

5. A welding machine with a clamping mechanism according to claim 1, characterized in that: A reinforcing block (15) is fixedly connected to the surface of the lifting rod (8), and the bottom of the reinforcing block (15) is fixedly connected to the top of the lifting plate (4).

6. A welding machine with a clamping mechanism according to claim 1, characterized in that: Vertical rods (16) are provided at the four corners inside the lifting plate (4), and the surfaces of the vertical rods (16) are fixedly connected to the inner wall of the base (1).

7. A welding machine with a clamping mechanism according to claim 6, characterized in that: The surface of the vertical rod (16) is covered with a stabilizing sleeve (17), and the bottom of the stabilizing sleeve (17) is fixedly connected to the top of the lifting plate (4).

8. A welding machine with a clamping mechanism according to claim 1, characterized in that: The front side and the rear side of the top of the lifting plate (4) are both provided with weight-reducing grooves (18), and the weight-reducing grooves (18) are located inside the base (1).

9. A clamping method for a welding machine with a clamping mechanism according to claim 2, characterized in that: The method comprises the following steps: S1: When the welding machine body (2) is working, the workpiece to be processed is placed on the top of the base (1), the processing movement is adjusted to the bottom of the pressing plate (121), and when the workpiece is fixed, S2 is executed; S2: Start the motor (3), the motor (3) drives the gear (6) and the toothed belt (7) to rotate, the gear (6) drives the screw rod (5) to rotate, the screw rod (5) drives the lifting plate (4) to move upward, the lifting plate (4) drives the clamping frame (9) to rotate around the hinge of the limit plate (10), and during the rotation of the clamping frame (9), the limit plate (10) is driven to flip inward at the intersection with the mounting block (11). When the clamping frame (9) rotates to a horizontal state, it stops rotating, and the pressing plate (121) also rotates to a horizontal state. When the pressing plate (121) contacts the workpiece, the workpiece is fixed. When the clamping force of the pressing plate (121) needs to be adjusted according to the strength of the workpiece, execute S3; S3: When the workpiece to be processed has a thin wall and a relatively fragile structure, the second screw rod (126) is rotated, the second screw rod (126) moves upward, and the second screw rod (126) drives the force plate (125) to move upward, the distance between the force plate (125) and the pressing plate (121) increases, and the degree of compression of the spring (124) decreases. When the degree of compression of the spring (124) decreases, the elastic force generated by the spring (124) also decreases. When the elastic force of the spring (124) is weak, the downward clamping force of the pressing plate (121) is weakened, and the clamping force of the pressing plate (121) can be adjusted according to the structural strength of the workpiece.

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