Plasma automatic welding titanium alloy plate welding device and welding process thereof

Abstract

The application relates to the field of welding technology, in particular to a plasma automatic welding titanium alloy plate welding device and a welding process thereof. The device comprises a welding table and a welding head movably arranged above the welding table. An air channel is formed in the welding table, and an air pipe is arranged in the welding table. A plurality of air holes for introducing protective gas into the air channel are formed in the air pipe. A sealing element for realizing sealing between the plate and the air channel is arranged on the welding table at a position opposite to the air channel. Two mutually parallel mounting racks are arranged on the welding table, and a plurality of quick clamps are arranged on the mounting racks along the length direction of the mounting racks. After two plates are placed on the welding table and spliced together, the splicing position is aligned with the air channel. Then, the sealing element is used to realize sealing of the welding table and the plates. A worker manually operates the quick clamps to realize compression of the plates by the quick clamps. After welding is completed, the worker manually releases the compression of the plates by the quick clamps and takes the plates off the welding table. The application has the advantage of improving the welding quality of the plates.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of welding, in particular to a plasma automatic titanium alloy plate welding device and a welding process thereof. BACKGROUND

[0002] Plasma welding is a welding method using a plasma arc as a heat source to melt the connection of two metals, which has the advantages of stable arc, concentrated heat, small heat-affected zone and high production efficiency.

[0003] In the related art, a plate welding device is disclosed, which comprises a welding table placed on the ground, and a welding head movably arranged on the welding table. During welding, workers place different plates on the welding table and splice them together, and then the welding head starts to move and realizes welding of the two plates.

[0004] During the welding process, a high temperature is generated at the contact position of the welding head and the plate, so the plate may be locally deformed due to high temperature, thereby affecting the welding quality, which is obviously insufficient. SUMMARY

[0005] In order to improve the problem that the plate welding position may be deformed due to high temperature, the application provides a plasma automatic titanium alloy plate welding device and a welding process thereof.

[0006] In a first aspect, the application provides a plasma automatic titanium alloy plate welding device, which adopts the following technical scheme:

[0007] A plasma automatic titanium alloy plate welding device comprises a welding table and a welding head movably arranged above the welding table, a gas channel is formed in the welding table, a gas pipe is arranged in the welding table, a plurality of gas holes for introducing protective gas into the gas channel are formed in the gas pipe, a sealing element for realizing sealing between the plate and the gas channel is arranged at a position of the welding table relative to the gas channel, two mutually parallel mounting racks are arranged on the welding table, and a plurality of quick clamps are arranged on the mounting racks along the length direction of the mounting racks.

[0008] By adopting the above technical scheme, workers place two plates on the welding table and splice them together, so that the spliced position is aligned with the gas channel, then the plates are pressed by the quick clamps, the welding table and the plates are sealed by the sealing element, the gas pipe introduces protective gas into the gas channel through the gas holes, and then the welding head moves to realize welding of the plates. The plates are not easy to deform even under the action of high temperature due to the pressing action of the quick clamps, so as to improve the welding effect of the plates.

[0009] Optionally, the sealing element is made of high-temperature-resistant rubber or masking paper.

[0010] By adopting the technical scheme, the high-temperature-resistant rubber can be kneaded at will, and the decorative paper can be directly torn by hand to obtain a proper length, so that the welding table and the plate can be quickly and conveniently sealed.

[0011] Optionally, the mounting frame has a spacing with the upper surface of the welding table, and a plurality of pressing plates for pressing on the plate are arranged on the welding table, and the quick clamp is tightly pressed on the pressing plates.

[0012] By adopting the technical scheme, the pressing plates can improve the pressing area of the quick clamp on the plate, thereby improving the pressing range of the plate.

[0013] Optionally, opposite sides of the welding table relative to the two mounting frames are provided with a connecting plate assembly, the connecting plate assembly comprises a sliding seat arranged on the welding table, the pressing plate is slidingly arranged on the sliding seat, a compression spring is arranged between the pressing plate and the sliding seat, the connecting plate assembly further comprises a rotating rod rotatably arranged on the welding table, an end of the rotating rod is provided with a rotating wheel, a plurality of winding wheels are fixedly sleeved on the rotating rod along the length direction of the rotating rod, each winding wheel is wound with a first pull rope, one first pull rope corresponds to one pressing plate, the first pull rope passes through the corresponding sliding seat and the compression spring and is connected to the corresponding pressing plate, and the connecting plate assembly further comprises a locking rod for locking the rotation of the rotating rod.

[0014] By adopting the technical scheme, when the rotating rod rotates to drive the winding wheel to wind the first pull rope, the first pull rope pulls the pressing plate to gradually separate from the plate, and the pressing plate cooperates with the sliding seat to press the compression spring. When the rotating rod is reversely rotated, the winding wheel unwinds the first pull rope, and the compression spring pushes the pressing plate to move back to the pressing plate. Through the arrangement of the connecting plate assembly, the movement of multiple pressing plates can be realized at the same time, which is beneficial to improve the convenience of operation of workers.

[0015] Optionally, the locking rod comprises a ratchet wheel fixedly sleeved on the rotating rod, a sliding block slidingly arranged on the welding table, a pawl hingedly arranged on the sliding block and used for being engaged with the ratchet wheel, and a tension spring arranged between the pawl and the sliding block.

[0016] By adopting the technical scheme, the ratchet wheel and the pawl cooperate to limit the one-way rotation of the rotating rod, so that the rotating rod remains in the locked state after the first pull rope is wound on the winding wheel.

[0017] Optionally, a pull ring is arranged on the pawl.

[0018] By adopting the technical scheme, the worker can more conveniently rotate the pawl through the pull ring, so that the pawl and the ratchet wheel are re-engaged.

[0019] Optionally, two vertical lifting rod seats are arranged beside the welding table, vertical grooves are formed on opposite sides of the two lifting rod seats respectively, a vertically sliding pedal is arranged between the two grooves, a second pulling rope is tied on the pedal, and the second pulling rope is wound on the rotating rod.

[0020] By adopting the above technical scheme, since each pressing plate corresponds to a compression spring, when the worker pulls down the multiple pressing plates from the plate through the link plate assembly, the deformation force of the multiple compression springs needs to be overcome at the same time, and the worker may be difficult to operate due to insufficient hand strength. Therefore, the worker can step on the pedal, and the weight of the worker is used to apply pressure to the pedal. In the process of downward movement of the pedal, the second pulling rope drives the rotating rod to rotate to realize the action of the linkage assembly, which is beneficial to improve the applicability of the linkage assembly.

[0021] In a second aspect, the application provides a welding process of the automatic plasma welding device for welding titanium alloy plates, which adopts the following technical scheme:

[0022] A welding process of the automatic plasma welding device for welding titanium alloy plates, comprising the following steps:

[0023] S1, after the worker places two plates on the welding table and splices them together, the spliced part is aligned with the air passage, and then the welding table and the plates are sealed by the sealing element;

[0024] S2, the worker manually operates multiple quick clamps to press the plates, and after welding is completed, the worker manually releases the pressing of the plates by the quick clamps and takes the plates off the welding table.

[0025] By adopting the above technical scheme, the worker places two plates on the welding table and splices them together, so that the spliced part is aligned with the air passage. Then, the plates are pressed by the quick clamps, and the welding table and the plates are sealed by the sealing element. The protective gas is introduced into the air passage through the air hole of the gas pipe. Then, the welding head moves to weld the plates. Since the quick clamps can press the plates, the deformation of the plates under high temperature is limited, thereby improving the welding effect.

[0026] In summary, the application has the following at least one beneficial technical effect:

[0027] 1. The quick clamps press the plates near the welding position, so that the plates are not easily deformed even under the action of high temperature, thereby improving the welding effect of the plates;

[0028] 2. The link plate assembly can simultaneously realize the movement of multiple pressing plates, which is beneficial to improve the convenience of worker operation and improve the welding efficiency;

[0029] 3. When the worker is difficult to rotate the rotating rod due to insufficient hand strength, the worker can step on the pedal, and the pedal is pressed by the weight of the worker, and the second pull rope drives the rotating rod to rotate to realize the action of the linkage assembly, thereby improving the applicability of the linkage assembly. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic diagram of the embodiment of the application.

[0031] Figure 2 is a schematic diagram of the positional relationship between the winding wheel, the ratchet wheel and the pawl in the embodiment of the application.

[0032] Mark 1, welding table; 3, air pipe; 4, sealing element; 5, mounting frame; 6, quick clamp; 7, pressing plate; 8, sliding seat; 9, compression spring; 10, rotating rod; 11, rotating wheel; 12, winding wheel; 13, first pull rope; 14, ratchet wheel; 15, sliding block; 16, pawl; 17, tension spring; 18, pull ring; 19, lifting rod seat; 191, sliding groove; 20, pedal; 21, second pull rope. DETAILED DESCRIPTION

[0033] The following will be described in detail in combination with the accompanying Figures 1-2 The application will be further described in detail.

[0034] Embodiment 1

[0035] The embodiment of the application discloses a plasma automatic welding titanium alloy plate welding device.

[0036] Referring to Figure 1 The plasma automatic welding titanium alloy plate welding device comprises a welding table 1 made of metal copper and a welding head (not shown in the figure) movably arranged above the welding table 1, and the welding head can be moved at will to weld the plate on the welding table 1.

[0037] Referring to Figure 1 The welding table 1 is provided with an air channel (not shown in the figure), and the welding table 1 is arranged with an air pipe 3, and the air pipe 3 is provided with a plurality of air holes (not shown in the figure) for introducing protective gas into the air channel. Before welding, the worker places different plates on the welding table 1 and splices them together, so that the splicing part is aligned with the air channel.

[0038] The protective gas in the application adopts argon, and the argon enters the air channel through each air hole on the air pipe 3, and the argon leaks out from the splicing part of different plates, so as to protect the electrode of the welding head.

[0039] Referring to Figure 1The sealing piece 4 is arranged on the welding table 1 in a position opposite the air channel, and seals the plate and the air channel, thereby ensuring that the protective gas fills the air channel and improves the protective effect on the electrode on the welding joint.

[0040] The sealing piece 4 is made of high-temperature-resistant rubber or masking paper in the prior art. The high-temperature-resistant banana mud can be kneaded at will, and the masking paper can be manually torn to the required length, so it can be more convenient for sealing between the air channel and the plate.

[0041] Referring to Figure 1 Two mounting racks 5 parallel to the air channel are arranged on the welding table 1 in the length direction, and a plurality of quick clamps 6 are bolted on each mounting rack 5 along the length direction.

[0042] When the worker places the plate to be welded on the welding table 1 and splices it, the worker manually operates the quick clamp 6 to press the quick clamp 6 on the plate. Even if the plate is affected by high temperature during welding, it is not easy to deform, thereby improving the welding quality of the plate.

[0043] Referring to Figure 1 The mounting rack 5 has a spacing between the upper surface of the welding table 1, and a plurality of pressing plates 7 are arranged below each mounting rack 5 along the length direction. One pressing plate 7 corresponds to one quick clamp 6, and the pressing plate 7 is used to press the plate, and the quick clamp 6 is pressed on the pressing plate 7.

[0044] Referring to Figure 1 The arrangement of the pressing plate 7 increases the pressing area of the quick clamp 6 on the plate, which is beneficial to further reduce the possibility of deformation of the plate affected by high temperature.

[0045] Referring to Figure 1 The welding table 1 is provided with a linkage assembly opposite the opposite sides of the two mounting racks 5. The linkage assembly links the plurality of pressing plates 7 below the corresponding mounting rack 5 to realize synchronous movement, thereby improving the convenience of operation during welding.

[0046] Referring to Figure 1 The linkage assembly includes a plurality of sliding seats 8 bolted on the welding table 1, one sliding seat 8 corresponds to one pressing plate 7, and the pressing plate 7 is slidingly arranged on the corresponding sliding seat 8. The pressing plate 7 and the sliding seat 8 are supported by a compression spring 9.

[0047] The linkage assembly further includes a rotating shaft 10 rotatably arranged on the welding table 1, and a locking rod member for locking the rotation of the rotating shaft 10. The end of the rotating shaft 10 is integrally formed with a rotating wheel 11. The rotating wheel 11 can be conveniently used by the worker to rotate the rotating shaft 10 more labor-saving.

[0048] A plurality of winding wheels 12 are fixed on the rotating rod 10 along the length direction of the rotating rod 10, each winding wheel 12 is wound with a first pulling rope 13, one first pulling rope 13 corresponds to one pressing plate 7, the first pulling rope 13 passes through the corresponding sliding seat 8 and the compression spring 9 and is tied to the corresponding pressing plate 7.

[0049] With reference to Figure 1 When the welding is completed, the worker manually rotates the rotating rod 10, the winding wheel 12 realizes the winding of the first pulling rope 13, the first pulling rope 13 overcomes the deformation force of the compression spring 9 to pull the pressing plate 7 to move, when the pressing plate 7 is completely removed from the plate, the worker locks the rotating rod 10 through the locking rod.

[0050] With reference to Figure 1 When the plate to be welded is placed on the welding table 1, the worker releases the locking of the rotating rod 10 by the locking rod, the deformation force of the compression spring 9 pushes the pressing plate 7 to move back to the plate, and the winding wheel 12 realizes the unwinding of the first pulling rope 13.

[0051] With reference to Figure 1 The locking rod comprises a ratchet wheel 14 fixed on the rotating rod 10, a sliding block 15 slidingly arranged on the welding table 1, a pawl 16 hingedly arranged on the sliding block 15 and used for being engaged with the ratchet wheel 14, and a tension spring 17 hung between the pawl 16 and the sliding block 15.

[0052] With reference to Figure 1 The ratchet wheel 14 cooperates with the pawl 16, so that the rotating rod 10 can only rotate in one direction. When the winding wheel 12 realizes the winding of the first pulling rope 13, the rotating rod 10 can only rotate in the positive direction.

[0053] When the worker releases the locking of the rotating rod 10 by the locking rod, the worker manually slides the sliding block 15, so that the pawl 16 is disengaged from the ratchet wheel 14. After the pressing plate 7 is moved into position, the worker manually rotates the pawl 16 and slides the sliding block 15, and under the action of the tension spring 17, the pawl 16 is engaged with the ratchet wheel 14 again.

[0054] With reference to Figure 1 A pull ring 18 is welded on the pawl 16, which facilitates the worker to manually rotate the pawl 16.

[0055] With reference to Figure 1 and Figure 2 Two vertical lifting rod seats 19 are welded beside the welding table 1, vertical sliding grooves 191 are respectively formed on the opposite sides of the two lifting rod seats 19, a vertical sliding pedal 20 is horizontally arranged between the two sliding grooves 191, a second pulling rope 21 is tied on the pedal 20, and the second pulling rope 21 is wound on the rotating rod 10.

[0056] When the winding wheel 12 winds the first pull rope 13, the rotating rod 10 unwinds the second pull rope 21, when the worker is difficult to rotate the rotating rod 10 due to insufficient hand strength, the worker can step on the pedal 20, the worker's own weight is used to apply pressure to the pedal 20, in the process of downward movement of the pedal 20, the second pull rope 21 drives the rotating rod 10 to rotate to realize the linkage assembly action, which is beneficial to improve the applicability of the linkage assembly.

[0057] The implementation principle of the embodiment 1 is as follows: after the worker places two plates on the welding table 1 and splices them together, the splicing part is aligned with the air duct, then the welding table 1 and the plates are sealed by the masking paper or the high-temperature-resistant rubber mud. The worker manually slides the sliding block 15, so that the pawl 16 is separated from the contact with the ratchet wheel 14, and the deformation force of the compression spring 9 drives the corresponding pressing plate 7 to move onto the plate. Then the worker operates each quick clamp 6, so that the quick clamp 6 is pressed on the corresponding pressing plate 7, and then the welding head moves to the plate to realize welding. After welding is completed, the worker first manually releases the pressing action of the quick clamp 6 on the pressing plate 7, and then manually slides the sliding block 15 so that the pawl 16 is re-coupled with the ratchet wheel 14, and the rotating rod 10 is rotated, the winding wheel 12 winds the first pull rope 13, and the first pull rope 13 drives the pressing plate 7 to move against the deformation force of the compression spring 9, until the pressing plate 7 is completely removed from the plate.

[0058] Embodiment 2

[0059] The embodiment 2 of the present application discloses a welding process of a plasma automatic welding titanium alloy plate welding device, which comprises the following steps:

[0060] S1, the worker places two plates on the welding table 1 and splices them together, so that the splicing part is aligned with the air duct, and then the welding table 1 and the plates are sealed by the sealing element 4;

[0061] S2, the worker manually slides the sliding block 15, so that the pawl 16 is separated from the contact with the ratchet wheel 14, and the deformation force of the compression spring 9 drives the corresponding pressing plate 7 to move onto the plate. Then the worker operates each quick clamp 6, so that the quick clamp 6 is pressed on the corresponding pressing plate 7, and then the welding head moves to the plate to realize welding.

[0062] S3, after welding is completed, the worker first manually releases the pressing action of the quick clamp 6 on the pressing plate 7, and then manually slides the sliding block 15 so that the pawl 16 is re-coupled with the ratchet wheel 14, and the rotating rod 10 is rotated, the winding wheel 12 winds the first pull rope 13, and the first pull rope 13 drives the pressing plate 7 to move against the deformation force of the compression spring 9, until the pressing plate 7 is completely removed from the plate.

[0063] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A plasma automatic welding device for titanium alloy plates, comprising a welding table (1) and a welding head movably disposed above the welding table (1), wherein the welding table (1) has an air passage, an air pipe (3) is arranged inside the welding table (1), the air pipe (3) has a plurality of air holes for introducing protective gas into the air passage, and a sealing element (4) for sealing between the plate and the air passage is disposed on the welding table (1) relative to the air passage, characterized in that: The welding table (1) is provided with two parallel mounting brackets (5), and the mounting brackets (5) are provided with multiple quick clamps (6) along their length. There is a gap between the mounting bracket (5) and the upper surface of the welding table (1). Multiple pressure plates (7) for pressing onto the plate are placed on the welding table (1). The quick clamp (6) presses onto the pressure plates (7). On the welding table (1), a connecting plate assembly is provided on the opposite sides of the two mounting brackets (5). The connecting plate assembly includes a slide (8) on the welding table (1), a pressure plate (7) is slidably disposed on the slide (8), and a compression spring (9) supports the pressure plate (7) and the slide (8). The connecting plate assembly also includes a rotating rod (10) rotatably disposed on the welding table (1). A rotating wheel (11) is provided at the end of the rotating rod (10). Multiple winding wheels (12) are fixedly sleeved on the rotating rod (10) along its length direction. A first pull rope (13) is wound on each winding wheel (12). One first pull rope (13) corresponds to one pressure plate (7). The first pull rope (13) passes through the corresponding slide (8) and the compression spring (9) and is connected to the corresponding pressure plate (7). The connecting plate assembly also includes a locking rod for locking the rotation of the rotating rod (10).

2. The plasma automatic welding device for titanium alloy plates according to claim 1, characterized in that: The sealing element (4) is made of high-temperature resistant rubber putty or masking paper.

3. The plasma automatic welding device for titanium alloy plates according to claim 1, characterized in that: The locking member includes a ratchet (14) fixedly sleeved on the rotating rod (10), a slider (15) slidably disposed on the welding table (1), a pawl (16) hinged to the slider (15) and used for engaging with the ratchet (14), and a tension spring (17) disposed between the pawl (16) and the slider (15).

4. The plasma automatic welding device for titanium alloy plates according to claim 3, characterized in that: A pull ring (18) is provided on the pawl (16).

5. The plasma automatic welding device for titanium alloy plates according to claim 1, characterized in that: Two vertical lifting rod seats (19) are provided next to the welding table (1). The two lifting rod seats (19) have vertically opened sliding grooves (191) on opposite sides. A vertically sliding pedal (20) is provided between the two sliding grooves (191). A second pull rope (21) is attached to the pedal (20). The second pull rope (21) is wound around the rotating rod (10). When the winding wheel (12) winds up the first pull rope (13), the rotating rod (10) unwinds the second pull rope (21).

6. A welding process for an automatic plasma welding device for titanium alloy plates according to any one of claims 1-5, characterized in that: Includes the following steps: S1. The worker places two plates on the welding table (1) and splices them together so that the splice is aligned with the air passage. Then, the welding table (1) and the plates are sealed by the sealing element (4). S2. The worker manually operates multiple quick clamps (6) to press the plate with the quick clamps (6); after welding is completed, the worker manually releases the pressure of the quick clamps (6) on the plate and removes the plate from the welding table (1).

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