Positioning device for machining multi-specification parts by welding machine tool

Abstract

The utility model discloses a welding machine tool machining multi-specification part positioning device, and particularly relates to the technical field of welding machine tool machining, the welding machine tool machining multi-specification part positioning device comprises four fixing blocks, the opposite ends of the four fixing blocks are jointly provided with a sliding assembly, and the upper side of the sliding assembly is provided with positioning assemblies in a bilateral symmetry mode. According to the positioning device for machining the multi-specification parts through the welding machine tool, the distance between two steel pipes needing to be welded can be flexibly set through the arranged sliding assembly, and therefore convenience is provided for workers when the two steel pipes with different lengths need to be welded together; the two expanding assemblies arranged at the same time can be placed in the steel pipe to support and position the inner surface of the steel pipe, and the expanding and contracting amplitude of the two expanding assemblies can be set at will, so that the two expanding assemblies can support and position the steel pipes of different specifications and sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of welding machine tool mechanical processing, in particular to a positioning device for mechanical processing of multi-specification parts of welding machine tools. Background Art

[0002] Welding machines play an important role in mechanical processing. They mainly involve joining metal materials together through welding. The working principle of welding machines is mainly through the action of electric current and heat energy to generate high temperature at the weld joint, causing the metal materials to melt and form a connection.

[0003] Chinese patent document CN211966449U discloses a device for positioning parts of various specifications for a welding machine tool, comprising a base, a motor, and a pulley mechanism, wherein a support column is provided on the upper end face of the base, a motor shaft is rotatably connected to the end of the motor, a connecting plate is fixedly installed at the end of the movable tube, a worm gear is sleeved on one end of the movable shaft, and an adjustment rod is movably provided on the side of the worm gear, a first gear is sleeved on the other end of the movable shaft, a connecting shaft passes through the interior of the second gear, and a third gear is sleeved on the end of the connecting shaft, a locking rod is movably provided on the side of the third gear, and a tooth block is welded to the side of the locking rod. The device for positioning parts of various specifications for a welding machine tool can automatically adjust the welding angle during welding, ensuring the accuracy of the welding position, and the same welding machine can position parts of various specifications to achieve welding operations with different requirements.

[0004] Although the above-mentioned device can realize the function of positioning parts of various specifications, the relative positions of the two parts to be welded cannot be changed. If two steel pipes of different lengths need to be welded together, because the relative distance between the two steel pipes cannot be flexibly set, the distance between the two steel pipes will be too long or too short, thereby affecting the welding operation between the two steel pipes. Utility Model Content

[0005] The main purpose of the utility model is to provide a multi-specification parts positioning device for machining welding machine tools, which can effectively solve the problem that the relative distance between two steel pipes of different specifications cannot be flexibly set, thereby affecting the welding work.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A positioning device for machining multi-specification parts on a welding machine comprises four fixed blocks. The four fixed blocks are commonly provided with a sliding assembly at one opposite end. Positioning assemblies are symmetrically provided on the upper side of the sliding assembly.

[0008] Preferably, the sliding assembly includes a rectangular plate, which is fixedly connected to one opposite end of the four fixed blocks, a sliding groove is provided in the middle of the upper end of the rectangular plate, and the middle of the left and right ends of the rectangular plate are fixedly connected to electric cylinders, and the two piston rods at the output ends of the electric cylinders respectively pass through the middle of the left and right ends of the rectangular plate and extend to the inside of the sliding groove, and the two piston rods at the output ends of the electric cylinders are fixedly connected to a slider at one opposite end, and the two sliders are slidably connected to the inner surface of the sliding groove.

[0009] Preferably, the two positioning assemblies each include an annular plate, the lower ends of the two annular plates are respectively fixedly connected to the upper ends of the two sliders, the upper parts of the two annular plates away from each other are fixedly connected to a fixed plate, the opposite ends of the two fixed plates are fixedly connected to a motor, the output ends of the two motors are rotatably connected to a threaded rod through a coupling, and the outer surfaces of the two threaded rods are provided with a support assembly.

[0010] Preferably, the two expansion assemblies each include circular plate one and circular plate two, the circular plate one located on the same side is threadedly connected to the outer surface of the threaded rod, the circular plate two located on the same side is rotationally connected to the outer surface of the threaded rod away from the circular plate, and the outer surfaces of the circular plate one and circular plate two located on the same side are both provided with three connecting rod assemblies in a common annular array.

[0011] Preferably, the two support components both include round rods, and the two circular plates are each provided with a round hole at one end close to each other. The round rods on the same side are slidingly connected to the inner surface of the round hole, and the two round rods are respectively fixedly connected at one end away from each other to the opposite end of the two circular plates, and the two round rods are respectively fixedly connected at one end away from each other to the opposite end of the two circular plates.

[0012] Preferably, each of the connecting rod assemblies includes a rectangular body one, a rectangular body two and a rectangular body three, the upper end of each rectangular body one is fixedly connected to a rubber block, the left and right sides of the inner surface of each rectangular body one are rotatably connected to connecting rods, the two connecting rods are rotatably connected to the inner surfaces of the rectangular body two and the rectangular body three respectively, and each of the rectangular body two and each of the rectangular bodies three are fixedly connected to the outer surfaces of the circular plate one and the circular plate two respectively.

[0013] Preferably, the outer surface of each rubber block is arc-shaped.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The utility model provides a sliding component so that the distance between the two steel pipes to be welded can be flexibly set, which provides convenience for the staff when they need to weld two steel pipes of different lengths together; at the same time, the two expansion components can be placed inside the steel pipe to support and position the inner surface of the steel pipe. At the same time, the expansion and contraction amplitudes of the two expansion components can be set arbitrarily, so that the two expansion components can support and position steel pipes of different specifications and sizes.

[0016] 2. The utility model has two electric cylinders on both sides of the fixed plate. The two electric cylinders can make the positions of the two steel pipes to be welded be able to be changed independently. When the workers are welding two steel pipes of different lengths, the relative distance between the two steel pipes can be changed at will by the two electric cylinders, so that this device can better meet the needs of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the sliding assembly structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the positioning component structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the support assembly structure of the utility model;

[0021] Figure 5 This is a schematic structural diagram of the connecting rod assembly of the present utility model.

[0022] In the figure: 1. fixed block; 2. sliding assembly; 21. rectangular plate; 22. slide groove; 23. electric cylinder; 24. slider; 3. positioning assembly; 31. fixed plate; 32. motor; 33. circular ring plate; 34. threaded rod; 35. expansion assembly; 351. circular hole; 352. circular rod; 353. circular plate 1; 354. connecting rod assembly; 3541. rubber block; 3542. rectangular body 1; 3543. connecting rod; 3544. rectangular body 2; 3545. rectangular body 3; 355. circular plate 2. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1As shown, a positioning device for machining multi-specification parts of a welding machine tool comprises four fixed blocks 1, wherein a sliding assembly 2 is commonly provided at one opposite end of the four fixed blocks 1, and a positioning assembly 3 is symmetrically provided on the upper side of the sliding assembly 2.

[0025] During specific implementation, if it is necessary to weld two steel pipes of different specifications and lengths, the sliding component 2 is opened, and the relative distance between the two positioning components 3 is changed to a suitable position according to the different lengths of the two steel pipes. The two positioning components 3 are placed in the two steel pipes respectively, and the two positioning components 3 are opened so that the two positioning components 3 are stretched to support the inner surfaces of the two steel pipes, thereby supporting and positioning the two steel pipes. Then, the sliding component 2 is continued to be adjusted so that the sliding component 2 drives the two positioning components 3 and the steel pipes to a suitable position for welding, and the welding work of the two steel pipes is started.

[0026] Specifically, in order to meet the needs of positioning steel pipes of different specifications and arbitrarily change the relative distance between two steel pipes, so as to better meet the needs of workers when welding different steel pipes, refer to Figure 2 The sliding assembly 2 includes a rectangular plate 21, which is fixedly connected to the opposite ends of the four fixed blocks 1. A slide groove 22 is provided in the middle of the upper end of the rectangular plate 21. The middle of the left and right ends of the rectangular plate 21 are fixedly connected to electric cylinders 23. The piston rods of the output ends of the two electric cylinders 23 respectively pass through the middle of the left and right ends of the rectangular plate 21 and extend into the inside of the slide groove 22. The opposite ends of the piston rods of the output ends of the two electric cylinders 23 are fixedly connected to sliders 24. The two sliders 24 are slidably connected to the inner surface of the slide groove 22.

[0027] Further reading Figure 3 , the two positioning assemblies 3 each include a circular plate 33, the lower ends of the two circular plates 33 are fixedly connected to the upper ends of the two sliders 24, and the upper parts of the two circular plates 33 away from each other are fixedly connected to a fixed plate 31, and the opposite ends of the two fixed plates 31 are fixedly connected to a motor 32, and the output ends of the two motors 32 are rotatably connected to a threaded rod 34 through a coupling, and the outer surfaces of the two threaded rods 34 are provided with a support assembly 35;

[0028] Further reading Figure 4, the two expansion assemblies 35 each include a circular plate 1 353 and a circular plate 2 355, the circular plate 1 353 located on the same side are threadedly connected to the outer surface of the threaded rod 34, the circular plate 2 355 located on the same side are rotatably connected to the outer surface of the threaded rod 34 away from the annular plate 33, and the outer surfaces of the circular plates 1 353 and 355 on the same side are jointly provided with three connecting rod assemblies 354 in an annular array; the two expansion assemblies 35 each include a round rod 352, and the two circular plates 1 353 are each provided with a round hole 351 at one end close to each other, and the round rods 352 located on the same side are slidably connected to the inner surface of the circular hole 351, and the two round rods 352 are respectively fixedly connected to the opposite end of the two annular plates 33 at one end away from each other, and the opposite end of the two round rods 352 is respectively fixedly connected to the two circular plates 2 355 at one end away from each other;

[0029] Further reading Figure 5 Each of the connecting rod assemblies 354 includes a rectangular body 1 3542, a rectangular body 2 3544 and a rectangular body 3 3545. The upper end of each rectangular body 1 3542 is fixedly connected to a rubber block 3541. The left and right sides of the inner surface of each rectangular body 1 3542 are rotatably connected to connecting rods 3543. The two connecting rods 3543 are rotatably connected to the inner surfaces of the rectangular body 2 3544 and the rectangular body 3 3545 respectively. Each of the rectangular body 2 3544 and each of the rectangular body 3 3545 are fixedly connected to the outer surfaces of the circular plate 1 353 and the circular plate 2 355 respectively. The outer surface of each rubber block 3541 is arc-shaped.

[0030] In a specific implementation, according to the length of the two steel pipes to be welded, the two electric cylinders 23 are turned on and the two slide blocks 24 are driven to slide in the slide grooves 22 respectively through the telescopic piston rods, thereby driving the distance between the two positioning components 3 to change to a suitable position, and then the two electric cylinders 23 are turned off to stop changing the positions of the two positioning components 3;

[0031] After the above operation, the two steel pipes are lifted to the appropriate position with the help of the auxiliary machinery, and the motor 32 is turned on, thereby driving the threaded rod 34 to rotate clockwise. Since the circular plate 1 353 is threadedly connected to the threaded rod 34, and the circular plate 2 355 is rotatably connected to the threaded rod 34, when the threaded rod 34 rotates clockwise, the circular plate 2 355 rotates together with the threaded rod 34 and remains unchanged. The circular plate 1 353 moves toward the direction of the circular plate 2 355 as the threaded rod 34 rotates clockwise. The circular rod 352 will limit the movement of the circular plate 1 353 when the circular plate 1 353 rotates with the threaded rod 34, so that the circular plate 1 353 does not rotate but moves horizontally. During the movement, the circular plate 1 353 drives the connecting rod 3543 to rotate and open outward, thereby driving the connecting rod assembly 354 to open outward, so that the opening amplitude of the expansion assembly 35 becomes larger.

[0032] On the contrary, the motor 32 is turned on, thereby driving the threaded rod 34 to rotate counterclockwise. The circular plate 1 353 moves away from the circular plate 2 355 as the threaded rod 34 rotates counterclockwise. During the movement, the connecting rod 3543 is driven to rotate, thereby driving the connecting rod assembly 354 to retract inward, so that the opening range of the expansion assembly 35 becomes smaller.

[0033] According to the above operation, the opening range of the two expansion components 35 is adjusted to a state smaller than the inner diameter of the steel pipe to be welded. With the help of the auxiliary machine, the two expansion components 35 are respectively placed in the steel pipe, and then the opening range of the expansion components 35 is adjusted to be larger until the connecting rod component 354 completely supports and fixes the inner wall of the steel pipe so that the two steel pipes do not shake at will. The provided rubber block 3541 not only increases the friction force, making the expansion component 35 support the inner surface of the steel pipe more stably, but also because the outer surface of each of the rubber blocks 3541 is arc-shaped, the expansion component 35 has a better support effect on the inner surface of the steel pipe;

[0034] According to the above operation, after the two support components 35 have supported and positioned the two steel pipes respectively, they continue to adjust the two electric cylinders 23 to extend and retract the piston rods, thereby driving the two positioning components 3 and the two steel pipes to the appropriate welding position, and start welding the two steel pipes.

[0035] It should be noted that the specific installation method, circuit connection method and control method of the two electric cylinders 23 and the two motors 32 used in the present invention are all conventional designs and will not be elaborated in detail in the present invention.

[0036] The working principle of this utility model is:

[0037] According to the different lengths of the two steel pipes to be welded, the two electric cylinders 23 are turned on to extend and retract their piston rods, driving the relative distance between the two positioning components 3 to change to a suitable position;

[0038] With the help of auxiliary machinery, the two steel pipes are lifted to a suitable position, and the two motors 32 are turned on to drive the two threaded rods 34 to rotate counterclockwise, thereby driving the two circular plates 1 353 to move away from the circular plate 2 355. In this way, the opening amplitudes of the two expansion components 35 are adjusted to be smaller than the inner diameters of the two steel pipes. With the help of auxiliary machinery, the two expansion components 35 are respectively placed in the two steel pipes, and the two motors 32 are adjusted so that the two expansion components 35 are respectively opened to a state where they can support and fix the inner walls of the two steel pipes. Then, the two electric cylinders 23 are adjusted to extend and retract their piston rods to drive the two positioning components 3 and the steel pipes to a suitable position for welding, and the welding work is started.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A positioning device for machining multi-specification parts of a welding machine tool, comprising four fixing blocks (1), characterized in that: The four fixed blocks (1) are commonly provided with a sliding assembly (2) at one opposite end, and a positioning assembly (3) is symmetrically provided on the upper side of the sliding assembly (2); The sliding assembly (2) comprises a rectangular plate (21), the rectangular plate (21) is fixedly connected to the opposite ends of the four fixed blocks (1), a sliding groove (22) is provided in the middle of the upper end of the rectangular plate (21), the middle of the left and right ends of the rectangular plate (21) are fixedly connected to the electric cylinder (23), the piston rods of the output ends of the two electric cylinders (23) respectively pass through the middle of the left and right ends of the rectangular plate (21) and extend into the inside of the sliding groove (22), the opposite ends of the piston rods of the output ends of the two electric cylinders (23) are fixedly connected to the slider (24), and the two sliders (24) are slidably connected to the inner surface of the sliding groove (22); The two positioning assemblies (3) each include a circular plate (33), the lower ends of the two circular plates (33) are fixedly connected to the upper ends of the two sliders (24), the upper parts of the two circular plates (33) away from each other are fixedly connected to a fixed plate (31), the opposite ends of the two fixed plates (31) are fixedly connected to a motor (32), the output ends of the two motors (32) are rotatably connected to a threaded rod (34) through a coupling, and the outer surfaces of the two threaded rods (34) are provided with a spreading assembly (35).

2. The device for positioning parts of various specifications for machining welding machine tools according to claim 1, characterized in that: The two expansion assemblies (35) each include a circular plate 1 (353) and a circular plate 2 (355); the circular plate 1 (353) on the same side is threadedly connected to the outer surface of the threaded rod (34); the circular plate 2 (355) on the same side is rotatably connected to the outer surface of the threaded rod (34) away from the annular plate (33); and three connecting rod assemblies (354) are arranged in a common annular array on the outer surfaces of the circular plate 1 (353) and the circular plate 2 (355) on the same side.

3. The device for positioning parts of various specifications for machining welding machine tools according to claim 2, characterized in that: The two spreading assemblies (35) each include a round rod (352), and a round hole (351) is provided at one end of the two circular plates (353) close to each other. The round rod (352) on the same side is slidably connected to the inner surface of the circular hole (351). The two round rods (352) are fixedly connected to the opposite ends of the two circular plates (33) at one end away from each other, and the opposite ends of the two round rods (352) are fixedly connected to the opposite ends of the two circular plates (355) at one end away from each other.

4. The device for positioning parts of various specifications for machining welding machine tools according to claim 3, characterized in that: Each of the connecting rod assemblies (354) includes a rectangular body 1 (3542), a rectangular body 2 (3544) and a rectangular body 3 (3545). The upper end of each rectangular body 1 (3542) is fixedly connected to a rubber block (3541). The left and right sides of the inner surface of each rectangular body 1 (3542) are rotatably connected to connecting rods (3543). The two connecting rods (3543) are rotatably connected to the inner surfaces of the rectangular body 2 (3544) and the rectangular body 3 (3545), respectively. Each of the rectangular body 2 (3544) and each of the rectangular body 3 (3545) are fixedly connected to the outer surfaces of the circular plate 1 (353) and the circular plate 2 (355), respectively.

5. The device for positioning parts of various specifications for machining welding machine tools according to claim 4, characterized in that: The outer surface of each rubber block (3541) is arc-shaped.

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