Positioning device and positioning method for equipment welding

Abstract

The application relates to the technical field of welding positioning, and discloses a positioning device and positioning method for equipment welding, which comprises a welding seat, an electromagnetic plate and an annular guide assembly. The electromagnetic plate is installed at the middle part of the welding seat, the top of the electromagnetic plate is provided with first electromagnetic clamping assemblies for clamping workpieces around, the first electromagnetic clamping assemblies comprise a plurality of first rod type elastic members arranged in a rectangular array, both sides of the welding seat are provided with winding assemblies, the winding assemblies are adjustable at the edge positions of the welding seat, and traction ropes are wound on the two winding assemblies. The first electromagnetic clamping assembly, the second electromagnetic clamping assembly and the traction rope are used for realizing self-adaptive clamping and positioning of the frame, avoiding asymmetric stress concentration, enhancing installation stability, assisting welding by using the annular guide assembly, ensuring that the welding process is stable and consistent, improving the welding quality, simplifying the overall operation process, reducing the labor cost and the failure probability, and adapting to complex installation and welding requirements.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding positioning, in particular to a positioning device and positioning method for equipment welding. BACKGROUND

[0002] In the process of equipment welding, first of all, different welding frames need to be constructed according to the structure and functional requirements of the equipment, which are used as the basis for support and positioning to carry and fix the instruments to be welded, and then various instruments are welded on the frame according to the design requirements, so as to gradually assemble into a complete equipment. In order to ensure the stability and welding quality of the welding process, the equipment is usually placed on a welding table, and at the same time, a clamp is used to position and fix the equipment. These clamps use positioning pins, positioning blocks and other elements to limit the degrees of freedom of the equipment according to the reference surface and characteristic elements of the equipment, so as to ensure the positional accuracy of the equipment in the welding process.

[0003] The traditional clamp relies on fixed positioning pins or positioning blocks, and the adjustment freedom is limited, which is difficult to adapt to different sizes or special-shaped frames. In the case of non-fixed frame size or complex equipment shape, the adjustment of the positioning device may need to be disassembled or reconfigured, thereby wasting time and increasing the probability of errors.

[0004] To solve the above problems, a positioning device and positioning method for equipment welding are provided in the present application. SUMMARY

[0005] The present application provides a positioning device and positioning method for equipment welding, which solves the problem that the traditional clamp relies on fixed positioning pins or positioning blocks, and the adjustment freedom is limited, which is difficult to adapt to different sizes or special-shaped frames.

[0006] The positioning device for equipment welding provided by the present application positions the frame loaded with a workpiece, which comprises a welding seat, an electromagnetic plate, an annular guide assembly and a welding gun head.

[0007] The electromagnetic plate is installed in the middle of the welding seat, and the top of the electromagnetic plate is provided with a first electromagnetic clamping assembly for clamping the frame around the four sides, the first electromagnetic clamping assembly comprises a plurality of first rod type elastic members arranged in a rectangular array.

[0008] The welding seat is provided with a winding assembly on both sides, and the winding assembly is adjustable at the edge position of the welding seat. Two winding assemblies are wound with traction ropes, and two traction ropes are connected with a second electromagnetic clamping assembly for clamping the frame, and the second electromagnetic clamping assembly comprises a plurality of second rod type elastic members arranged in a rectangular array.

[0009] The annular guide assembly is detachably installed on the two second electromagnetic clamping assemblies, the position of the annular guide assembly on the second electromagnetic clamping assembly is adjustable, and the annular guide assembly is used for pressing and guiding the welding gun head to move along the annular path against the workpiece placed in the middle of the frame.

[0010] As a further optimization scheme of the present application, the first electromagnetic clamping assembly further comprises a magnetic seat and a loading box, the top of the electromagnetic plate is provided with a magnetic seat around, the loading box is arranged above the magnetic seat, a first clamping area is formed between the magnetic seat and the loading box, a vertical column is installed on the side surface of the magnetic seat, a mounting block slidingly sleeved on the column is installed on the side surface of the loading box, a first spring is sleeved on the column, and the two ends of the first spring are connected with the magnetic seat and the mounting block respectively, a first electromagnetic block is installed on the top of the loading box, and there is a gap between the first electromagnetic block and the loading box, a first electromagnetic rod penetrating through the bottom of the loading box is installed on the bottom edge of the first electromagnetic block, a first magnetic cylinder located below the first electromagnetic rod and matched with the first electromagnetic rod is installed on the magnetic seat, and a plurality of first rod type elastic elements are arranged in the loading box and extend into the first clamping area.

[0011] As a further optimization scheme of the present application, the first rod type elastic element comprises a first shaft tube, a plurality of first shaft tubes are arranged in a rectangular array in the loading box, a magnetorheological fluid is arranged in the first shaft tube, a first electromagnetic rod extending into the magnetorheological fluid is inserted into the top of the first shaft tube, a first end block is installed on the top end of the first electromagnetic rod, a first tension spring is sleeved on the first electromagnetic rod, and the two ends of the first tension spring are connected with the first shaft tube and the first end block respectively, the first electromagnetic rod is connected with the first electromagnetic block through a first lead wire, and a first clamping rod is connected with the bottom end of the first electromagnetic rod and slides through the bottom of the first shaft tube and the loading box.

[0012] As a further optimization scheme of the present application, the second electromagnetic clamping assembly comprises a first loading seat and a second loading seat, the second loading seat is arranged above the first loading seat, a second clamping area is formed between the first loading seat and the second loading seat, a fixing tube is installed on the side surface of the second loading seat, a second spring is installed in the fixing tube, a bearing block is installed on the bottom of the second spring, a fixing rod rotatably connected with the bearing block is installed on the first loading seat, a second electromagnetic block is installed on the bottom of the first loading seat, and there is a gap between the second electromagnetic block and the first loading seat, a second electromagnetic rod penetrating through the top of the first loading seat is installed on the second electromagnetic block, a second magnetic cylinder located above the second electromagnetic rod and matched with the second electromagnetic rod is installed on the bottom of the second loading seat, a plurality of second rod type elastic elements are arranged in the first loading seat and extend into the second clamping area, and one end of the traction rope is connected with the fixing tube.

[0013] As a further optimization scheme of the present application, the second rod type elastic member comprises a second shaft tube, a plurality of mounting channels in a rectangular array are arranged in the first loading seat, a plurality of second shaft tubes are respectively mounted in the mounting channels, a magnetorheological fluid is arranged in the second shaft tube, a second electromagnetic rod immersed in the magnetorheological fluid is slidingly inserted into the bottom of the second shaft tube, a second end block below the first loading seat is mounted at the bottom end of the second electromagnetic rod, a second tension spring is sleeved on the second electromagnetic rod, and the two ends of the second tension spring are connected with the second shaft tube and the second end block respectively, the second electromagnetic rod and the second electromagnetic block are electrically connected through a second lead wire, a second clamping rod connected with the second electromagnetic rod is slidingly inserted into the top of the second shaft tube, and the second clamping rod is arranged in the second clamping area.

[0014] As a further optimization scheme of the present application, the one end of the traction rope is connected with the fixed tube through a pressure warning member;

[0015] The pressure warning member comprises a fixed tube, the fixed tube is obliquely installed on the side of the fixed tube, a sliding block is slidingly arranged in the fixed tube, the one end of the traction rope is slidingly inserted through the bottom of the fixed tube and connected with the sliding block, a pressure sensor is installed on the inner wall of the bottom of the fixed tube and faces the sliding block, a buzzer is installed on the sliding block, and the pressure sensor and the buzzer are electrically connected.

[0016] As a further optimization scheme of the present application, the winding assembly comprises a winding box, electric sliding rails are installed on both sides of the top of the welding seat, two winding boxes are respectively installed at the driving ends of the two electric sliding rails, a first motor is installed on the side of the winding box, a winding roller in the winding box is connected with the output end of the first motor, and the traction rope is wound relative to the winding roller.

[0017] As a further optimization scheme of the present application, the annular guide assembly comprises an annular guide rail, an annular tooth, an assembly ring, an elastic annular pressing member, a sleeve block and a vertical rod, vertical rods are installed on the two second loading seats, sleeve blocks are slidingly sleeved on the two vertical rods, the assembly ring is connected between the two sleeve blocks, bolts for pressing the vertical rods are threadedly connected with the sleeve blocks, the annular tooth is installed on the top of the assembly ring, the annular guide rail is installed on the top of the annular tooth, an annular groove is formed in the top of the annular guide rail, a U-shaped seat slidingly matched with the annular groove is arranged on the annular guide rail, an insertion block is rotatably installed in the middle of the U-shaped seat, an insertion hole for inserting the welding gun head is formed in the insertion block, a second motor is installed on the side of the U-shaped seat, a gear meshing with the annular tooth is connected with the output end of the second motor, and the bottom of the assembly ring is provided with the elastic annular pressing member for pressing the workpiece.

[0018] As a further optimization scheme of the present application, the elastic annular pressing piece comprises third springs and a pressing ring, the bottom of the assembly ring is provided with the third springs, and the pressing ring is arranged at the bottom of the third springs.

[0019] A positioning method for equipment welding using the positioning device for equipment welding, comprising the following steps:

[0020] Step one: place the frame on the electromagnetic plate of the welding seat, clamp the frame around the bottom through the plurality of first electromagnetic clamping assemblies, and when clamping, place the frame in the first clamping area formed between the magnetic seat and the loading box, apply downward pressure to the loading box, and self-adaptively clamp the frame through the plurality of first rod type elastic members on the loading box to form a wrapping at the clamping part of the frame, the first electromagnetic rod is inserted into the first magnetic cylinder, the first electromagnetic block can be energized, the first electromagnetic rod is magnetically connected with the first magnetic cylinder, the magnetorheological fluid in the first rod type elastic member is hardened to achieve clamping and positioning of the frame, after clamping the frame around through the plurality of first electromagnetic clamping assemblies, the electromagnetic plate can be energized to fix the position of the first electromagnetic clamping assembly;

[0021] Step two: clamp the second electromagnetic clamping assemblies on the two traction ropes on the two side edges of the top of the frame respectively to make the two traction ropes in a symmetrical and inclined state, then adjust the tension of the traction ropes by the winding assembly, and when clamping the edges of the top of the frame, place the frame in the second clamping area between the first loading seat and the second loading seat, then apply upward pressure to the first loading seat, and the plurality of second rod type elastic members on the first loading seat are self-adaptively clamped with the edges of the frame, the second electromagnetic rod is inserted into the second magnetic cylinder, the second electromagnetic block can be energized, the second electromagnetic rod is magnetically connected with the second magnetic cylinder, and the magnetorheological fluid in the second rod type elastic member is hardened to achieve clamping of the frame.

[0022] Step three: when the winding assembly applies traction force to the traction rope winding, the pressure warning member can monitor the traction force in real time, and if the traction exceeds a threshold value, an early warning is immediately given.

[0023] Step four: when welding the workpiece in the middle of the frame, the workpiece is placed in the middle of the frame by passing through the annular guide assembly, the annular guide assembly is arranged above the workpiece to be welded, the position of the annular guide assembly on the two second electromagnetic clamping assemblies is adjusted, the elastic annular pressing piece on the annular guide assembly is pressed on the workpiece to be welded to prevent the workpiece from deviating during welding, at this time, the welding gun head is inserted into the insertion hole in the insertion block, the welding gun head is aligned with the workpiece to be welded, then the second motor drives the gear to move along the annular gear, and the U-shaped seat with the welding gun head inserted in the insertion block moves along the workpiece to be welded in a ring shape to perform ring welding on the workpiece.

[0024] The above technical scheme of the present application has the following beneficial technical effects:

[0025] 1. The present application first places the frame on the electromagnetic plate of the welding seat, then clamps a plurality of first electromagnetic clamping assemblies around the bottom of the frame respectively, applies pressure to the first electromagnetic clamping assemblies, so that the plurality of first rod type elastic members on the first electromagnetic clamping assemblies self-adaptively clamp the frame, forming a wrap at the clamped part of the frame, then energizes the first electromagnetic clamping assemblies to limit the position of the first rod type elastic members, then energizes the electromagnetic plate to fix the position of the first electromagnetic clamping assemblies, completing the positioning of the frame, the first electromagnetic clamping assembly of the present application has magnetism and is provided with a plurality of first rod type elastic members arranged in a rectangular array, which can self-adapt to frames of different shapes, improving the adaptability of the clamp to various frames, and without complex disassembly and reconfiguration, only simple pressure and energization operations are needed to complete the positioning of the frame, simplifying the adjustment operation process, saving time and labor cost, and reducing the probability of operation errors;

[0026] 2. When various instruments need to be installed on the frame step by step, uneven distribution of instrument weight or installation position offset may easily cause asymmetric stress concentration of the frame, the present application clamps the second electromagnetic clamping assemblies on the two side edges of the top of the frame through two traction ropes, applies pressure to the second electromagnetic clamping assemblies, the plurality of second rod type elastic members on the second electromagnetic clamping assemblies self-adaptively clamp the top edges of the frame, then energizes the second electromagnetic clamping assemblies to generate magnetism, which can fix the position of the second rod type elastic members, completing the clamping of the frame, at this time, the two traction ropes are in a symmetrical inclined state, then the traction ropes are pulled through the winding assembly to adjust the tightness of the traction ropes, the traction force of the two traction ropes can be adjusted to achieve traction of the two sides of the frame, keeping the position stability, the present application uses the symmetrical inclined traction of the traction ropes and the self-adaptive clamping and energization fixation of the second electromagnetic clamping assemblies to effectively balance the stress on both sides of the frame, avoiding asymmetric stress concentration, thereby enhancing the stability of the frame during installation, and the traction force of the traction ropes can be flexibly adjusted through the winding assembly, this design enables the clamp to flexibly pull and clamp the frame according to different installation conditions and instrument weight distribution, better adapting to various complex installation requirements, improving the universality and practicality of the clamp in actual application, and can be widely applied to various frame installation scenes;

[0027] 3. When the winding assembly applies traction force to the traction rope winding, the pressure warning member can monitor the traction force in real time, and immediately issue a warning if the traction force is too large, this function can effectively avoid the occurrence of frame damage, deformation or clamp component damage caused by excessive traction force, ensuring the safety of the entire operation process, protecting the safety of the equipment and the operator, and reducing the risk of safety accidents caused by improper operation;

[0028] 4. The application can place the workpiece in the middle of the frame by passing through the annular guide assembly, and the annular guide assembly is placed above the workpiece to be welded, the position of the annular guide assembly on the two second electromagnetic clamping assemblies can be adjusted, so that the annular guide assembly can press on the workpiece to be welded to prevent the workpiece from deviating during welding, at this time, the welding gun head can be fixed on the annular guide assembly, and the annular guide assembly drives the welding gun head to move along the workpiece in a ring shape, realizing the annular welding of the workpiece. This design can ensure the stability and consistency of the welding process, and avoid welding defects caused by deviation of the workpiece position or unstable movement of the welding gun head. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The overall structure schematic diagram of the positioning device and positioning method for equipment welding is proposed in the application.

[0030] Figure 2 The structure schematic diagram of the first electromagnetic clamping assembly is proposed in the application.

[0031] Figure 3 The structure schematic diagram of the first rod type elastic member is proposed in the application.

[0032] Figure 4 The structure schematic diagram of the second electromagnetic clamping assembly is proposed in the application.

[0033] Figure 5 The internal sectional view of the fixed tube is proposed in the application.

[0034] Figure 6 The structure schematic diagram of the second rod type elastic member is proposed in the application.

[0035] Figure 7 The structure schematic diagram of the winding assembly is proposed in the application.

[0036] Figure 8 The structure schematic diagram of the pressure warning member is proposed in the application.

[0037] Figure 9 The structure schematic diagram of the annular guide assembly is proposed in the application.

[0038] Figure 10 The structure schematic diagram of the annular guide assembly is proposed in the application. Figure 9 The enlarged view of A in the application.

[0039] : 1, welding seat; 101, electromagnetic plate; 102, electric sliding rail; 2, first electromagnetic clamping assembly; 21, magnetic seat; 22, loading box; 23, stand; 24, assembly block; 25, first spring; 26, first electromagnetic block; 27, first electromagnetic rod; 28, first magnetic cylinder; 29, first rod type elastic piece; 291, first shaft tube; 292, first electromagnetic rod; 293, first end block; 294, first tension spring; 295, first clamping rod; 296, first wire; 3, winding assembly; 31, winding box; 32, winding roller; 33, first motor; 4, traction rope; 41, pressure early warning piece; 411, fixed tube; 412, pressure sensor; 413, sliding block; 414, buzzer; 5, second electromagnetic clamping assembly; 51, first loading seat; 52, second loading seat; 53, fixed tube; 531, second spring; 532, bearing block; 54, fixed rod; 55, second electromagnetic block; 56, second electromagnetic rod; 57, second magnetic cylinder; 58, second rod type elastic piece; 581, second shaft tube; 582, second electromagnetic rod; 583, second end block; 584, second tension spring; 585, second clamping rod; 586, second wire; 6, annular guide assembly; 61, annular guide rail; 611, annular groove; 612, U-shaped seat; 613, plug-in block; 614, second motor; 615, gear; 62, annular tooth; 63, assembly ring; 64, elastic annular pressing piece; 641, third spring; 642, pressing ring; 65, sleeve block; 66, vertical rod; 67, bolt. DETAILED DESCRIPTION

[0040] To make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the embodiments and the accompanying drawings. It should be understood that the description is only exemplary, but not to limit the scope of the present application. In addition, in the following description, the description of the known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0041] As shown in the drawings, Figures 1-10 The present application provides a positioning device for equipment welding, which positions a frame for loading a workpiece, and includes a welding seat 1, an electromagnetic plate 101, an annular guide assembly 6, and a welding torch head:

[0042] The electromagnetic plate 101 is installed in the middle of the welding seat 1, and the top of the electromagnetic plate 101 is provided with a first electromagnetic clamping assembly 2 for clamping the frame around, and the first electromagnetic clamping assembly 2 includes a plurality of first rod type elastic pieces 29 arranged in a rectangular array;

[0043] Both sides of the welding seat 1 are provided with winding assemblies 3, and the winding assemblies 3 are adjustable at the edge position of the welding seat 1, both of the winding assemblies 3 are wound with traction ropes 4, both of the traction ropes 4 are connected with second electromagnetic clamping assemblies 5 for clamping the frame, the second electromagnetic clamping assemblies 5 include a plurality of second rod type elastic pieces 58 arranged in a rectangular array;

[0044] The annular guide assembly 6 is detachably installed on the second electromagnetic clamping assemblies 5, and the position of the annular guide assembly 6 on the second electromagnetic clamping assemblies 5 is adjustable, the annular guide assembly 6 is used for pressing and guiding the welding gun head to move along the annular path against the workpiece placed in the middle of the frame.

[0045] The welding seat 1 provides a support platform for the whole device, the electromagnetic plate 101 can generate magnetism after being powered on, and is used for fixing the position of the first electromagnetic clamping assembly 2, the plurality of first rod type elastic pieces 29 in the first electromagnetic clamping assembly 2 are arranged in a rectangular array, can be self-adaptively adjusted according to the shape of the frame, and clamp the bottom four sides of the frame, improve the adaptability to frames of different shapes, the winding assembly 3 can be adjusted at the edge position of the welding seat 1, the position of the traction rope 4 is adjusted according to the frame of the workpiece, the winding assembly 3 adjusts the position of the second electromagnetic clamping assembly 5 and the tension degree of the traction rope 4 by winding or releasing the traction rope 4, the plurality of second rod type elastic pieces 58 of the second electromagnetic clamping assembly 5 clamp the top edge of the frame, cooperate with the traction of the traction rope 4, can balance the stress on both sides of the frame, avoid stress concentration, the annular guide assembly 6 is installed on the second electromagnetic clamping assembly 5 and the position is adjustable, it can press the workpiece placed in the middle of the frame and guide the annular movement of the welding gun head, ensure the stability of the welding process and improve the welding quality.

[0046] As shown in Figure 2 As shown in Figure 3 In the embodiment, the first electromagnetic clamping assembly 2 further includes a magnetic seat 21 and a loading box 22, the top four sides of the electromagnetic plate 101 are provided with the magnetic seat 21, the loading box 22 is arranged above the magnetic seat 21, a first clamping area is formed between the magnetic seat 21 and the loading box 22, a vertical column 23 is installed on the side surface of the magnetic seat 21, a mounting block 24 is installed on the side surface of the loading box 22 and is sleeved on the column 23, a first spring 25 is sleeved on the column 23, and the two ends of the first spring 25 are connected with the magnetic seat 21 and the mounting block 24 respectively, a first electromagnetic block 26 is installed on the top of the loading box 22, and there is a spacing between the first electromagnetic block 26 and the loading box 22, a first electromagnetic rod 27 is installed on the bottom edge of the first electromagnetic block 26 and penetrates through the bottom of the loading box 22, a first magnetic cylinder 28 is installed on the magnetic seat 21 below the first electromagnetic rod 27 and is matched with the first electromagnetic rod 27, and a plurality of first rod type elastic pieces 29 are arrayed on the loading box 22 and extend into the first clamping area.

[0047] When the frame is placed in the first clamping area between the magnetic base 21 and the loading box 22, the loading box 22 is subjected to pressure and slides downward along the stand 23, compressing the first spring 25, at this time, the first rod-shaped elastic piece 29 is in contact with the frame and adaptively adjusts to wrap clamping the frame, after the first electromagnetic rod 27 is inserted into the first magnetic cylinder 28, the first electromagnetic block 26 is powered, the first electromagnetic rod 27 is magnetically connected with the first magnetic cylinder 28, the magnetic fluid in the first rod-shaped elastic piece 29 is hardened, so as to fix the position of the frame. This design can realize automatic adaptive clamping of the frame, has good fixing effect, and ensures that the workpiece will not easily move during the welding process.

[0048] As shown in Figure 3 , in the embodiment, the first rod-shaped elastic piece 29 includes a first shaft tube 291, a plurality of first shaft tubes 291 are installed in a rectangular array in the loading box 22, the first shaft tube 291 is provided with magnetic fluid, the top of the first shaft tube 291 is inserted with a first electromagnetic rod 292 extending into the magnetic fluid, the top end of the first electromagnetic rod 292 is provided with a first end block 293, the first electromagnetic rod 292 is sleeved with a first tension spring 294, and the two ends of the first tension spring 294 are connected with the first shaft tube 291 and the first end block 293 respectively, the first electromagnetic rod 292 is connected with the first electromagnetic block 26 through a first lead wire 296, the bottom end of the first electromagnetic rod 292 is connected with a first clamping rod 295, and the bottom end of the first clamping rod 295 slides through the bottom of the first shaft tube 291 and the loading box 22.

[0049] When the first clamping rod 295 moves downward to press against the bottom of the frame under the downward pressure on the loading box 22, the first clamping rod 295 pushes the first electromagnetic rod 292 to move upward under the action force, at this time, the first electromagnetic block 26 is powered, the current is conducted to the first electromagnetic rod 292 through the first lead wire 296, the first electromagnetic rod 292 generates magnetism and hardens the magnetic fluid in the first shaft tube 291, so as to fix the position of the first clamping rod 295, the first tension spring 294 can reset the first electromagnetic rod 292 when power off, facilitating the next use, this structure makes the first rod-shaped elastic piece 29 can flexibly adjust the clamping force according to the power-on situation, adapt to the clamping needs of different frames, and ensure the stability and reliability of clamping.

[0050] As shown in Figure 4 , Figure 5 and Figure 6As shown, in the embodiment, the second electromagnetic clamping assembly 5 comprises a first loading seat 51 and a second loading seat 52, the second loading seat 52 is arranged above the first loading seat 51, a second clamping area is formed between the first loading seat 51 and the second loading seat 52, a fixed tube 53 is mounted on the side of the second loading seat 52, a second spring 531 is mounted in the fixed tube 53, a bearing block 532 is mounted at the bottom of the second spring 531, a fixed rod 54 is mounted on the first loading seat 51 and rotationally connected with the bearing block 532, a second electromagnetic block 55 is mounted at the bottom of the first loading seat 51 and spaced apart from the first loading seat 51, a second electromagnetic rod 56 passes through the top of the first loading seat 51 and is mounted on the second electromagnetic block 55, a second magnetic cylinder 57 is mounted at the bottom of the second loading seat 52 and above the second electromagnetic rod 56 and is adapted to the second electromagnetic rod 56, a plurality of second rod type elastic members 58 are arrayed on the first loading seat 51 and extend into the second clamping area, and one end of the traction rope 4 is connected with the fixed tube 53.

[0051] The top edge of the frame is placed in the second clamping area between the first loading seat 51 and the second loading seat 52, an upward pressure is applied to the first loading seat 51, the first loading seat 51 moves upward, the second spring 531 is compressed, the second rod type elastic member 58 is in contact with the frame edge and is self-adapted to clamp, after the second electromagnetic rod 56 is inserted into the second magnetic cylinder 57, the second electromagnetic block 55 is powered, the second electromagnetic rod 56 is magnetically connected with the second magnetic cylinder 57, the magnetic rheological fluid in the second rod type elastic member 58 is hardened, the position of the frame is fixed, the traction rope 4 is connected with the fixed tube 53, the winding assembly 3 adjusts the position of the second electromagnetic clamping assembly 5 and the traction force on the frame through the traction rope 4, the stress on both sides of the frame can be balanced, and the stability of the frame during welding is enhanced.

[0052] As shown in the drawings, Figure 6 In the embodiment, the second rod type elastic member 58 comprises a second shaft tube 581, a plurality of mounting channels arranged in a rectangular array are formed in the first loading seat 51, a plurality of second shaft tubes 581 are respectively mounted in the mounting channels, magnetic rheological fluid is arranged in the second shaft tube 581, a second electromagnetic rod 582 extending into the magnetic rheological fluid is slidingly inserted into the bottom of the second shaft tube 581, a second end block 583 below the first loading seat 51 is mounted at the bottom end of the second electromagnetic rod 582, a second tension spring 584 is sleeved on the second electromagnetic rod 582, and both ends of the second tension spring 584 are connected with the second shaft tube 581 and the second end block 583 respectively, the second electromagnetic rod 582 is electrically connected with the second electromagnetic block 55 through a second lead wire 586, a second clamping rod 585 connected with the second electromagnetic rod 582 is slidingly inserted into the top of the second shaft tube 581, and the second clamping rod 585 is arranged in the second clamping area.

[0053] When the second clamping rod 585 moves upward and presses against the frame, the second clamping rod 585 pushes the second electromagnetic rod 582 to move downward, and stretches the second tension spring 584, at this time, the second electromagnetic block 55 is powered on, the current is conducted to the second electromagnetic rod 582 through the second wire 586, the second electromagnetic rod 582 generates magnetism, and the magnetorheological fluid in the second shaft tube 581 is hardened, the hardened magnetorheological fluid fixes the position of the second clamping rod 585, realizes clamping of the frame, and the second tension spring 584 resets the second electromagnetic rod 582 when power off, and the plurality of second rod type elastic members 58 are arranged in a rectangular array, which can better adapt to the shape of the frame, realize stable clamping, and ensure that the workpiece does not shake during welding.

[0054] As shown in Figure 1 、 Figure 4 、 Figure 7 With Figure 8 In the embodiment, one end of the traction rope 4 is connected with the fixed tube 53 through the pressure warning piece 41;

[0055] The pressure warning piece 41 comprises a fixed tube 411, which is obliquely installed on the side surface of the fixed tube 53, and a sliding block 413 is slidingly arranged in the fixed tube 411, one end of the traction rope 4 slidingly passes through the bottom of the fixed tube 411 and is connected with the sliding block 413, a pressure sensor 412 is installed on the inner wall of the bottom of the fixed tube 411 and faces the sliding block 413, a buzzer 414 is installed on the sliding block 413, and the pressure sensor 412 and the buzzer 414 are electrically connected.

[0056] When the winding assembly 3 pulls the traction rope 4, the traction rope 4 pulls the sliding block 413 to slide in the fixed tube 411, when the traction force is too large and the pressure of the sliding block 413 on the pressure sensor 412 exceeds the set threshold value, the pressure sensor 412 transmits a signal to the buzzer 414, and the buzzer 414 gives an alarm, which can timely remind the operator to adjust the traction force, avoid the frame damage or the clamp component damage caused by the too large traction force, and ensure the safety of the welding process and the integrity of the equipment.

[0057] As shown in Figure 7 In the embodiment, the winding assembly 3 comprises a winding box 31, and the top of the welding seat 1 is provided with electric sliding rails 102 on both sides, and the two winding boxes 31 are respectively installed on the driving ends of the two electric sliding rails 102, a first motor 33 is installed on the side surface of the winding box 31, a winding roller 32 in the winding box 31 is connected with the output end of the first motor 33, and the traction rope 4 is wound relative to the winding roller 32.

[0058] The electric sliding rail 102 can drive the winding box 31 to move on the top edge of the welding seat 1, adjust the position of the winding assembly 3 according to the size of the frame, and drive the winding roller 32 to rotate after the first motor 33 is started, so as to realize the winding or releasing of the traction rope 4. By controlling the rotating speed and direction of the first motor 33, the tension of the traction rope 4 can be adjusted, so as to flexibly control the traction force of the second electromagnetic clamping assembly 5 on the workpiece, and meet the positioning requirements of the frame in different welding scenes.

[0059] As shown in Figure 1 , Figure 9 and Figure 10 , in the embodiment, the annular guide assembly 6 includes an annular guide rail 61, an annular tooth 62, an assembly ring 63, an elastic annular pressing piece 64, a sleeve block 65, and a vertical rod 66. The vertical rod 66 is installed on each of the two second loading seats 52, the sleeve block 65 is slidably sleeved on each of the two vertical rods 66, the assembly ring 63 is connected between the two sleeve blocks 65, the screw 67 for pressing the vertical rod 66 is threadedly connected to the sleeve block 65, the annular tooth 62 is installed on the top of the assembly ring 63, the annular guide rail 61 is installed on the top of the annular tooth 62, the annular groove 611 is formed in the top of the annular guide rail 61, the U-shaped seat 612 is arranged on the annular guide rail 61 and slidably matches with the annular groove 611, the plug block 613 is rotatably installed in the middle of the U-shaped seat 612, the plug hole is formed in the plug block 613 for inserting the welding gun head, the second motor 614 is installed on the side of the U-shaped seat 612, the gear 615 engaged with the annular tooth 62 is connected to the output end of the second motor 614, and the elastic annular pressing piece 64 for pressing the workpiece is installed on the bottom of the assembly ring 63.

[0060] By loosening the screw 67, the position of the sleeve block 65 on the vertical rod 66 can be adjusted, so as to adjust the height of the annular guide assembly 6. After the position is adjusted, the screw 67 is tightened to fix the welding gun head inserted into the plug hole of the plug block 613. The second motor 614 is started to drive the gear 615 to move on the annular tooth 62, drive the U-shaped seat 612 and the plug block 613 to move along the annular groove 611 of the annular guide rail 61, realize the annular movement of the welding gun head, and perform annular welding on the workpiece. The elastic annular pressing piece 64 is pressed on the workpiece, which can prevent the workpiece from deviating during welding and ensure the welding quality.

[0061] As shown in Figure 10 , in the embodiment, the elastic annular pressing piece 64 includes the third spring 641 and the pressing ring 642. The third spring 641 is installed on the bottom of the assembly ring 63, and the pressing ring 642 is installed on the bottom of the plurality of third springs 641.

[0062] The third springs 641 play a role of buffering and elastic support. When the annular guide assembly 6 is placed above the workpiece, the compression ring 642 is in contact with the surface of the workpiece and exerts a certain pressure under the action of the third springs 641. This elastic design can adapt to workpieces of different shapes and surface conditions, better compress the workpiece, prevent the workpiece from shaking or deviating during welding, and further improve the stability and quality of welding.

[0063] A positioning method for equipment welding, using the positioning device for equipment welding, comprising the following steps:

[0064] Step one: place the frame on the electromagnetic plate 101 of the welding seat 1, and clamp the frame around the bottom through the plurality of first electromagnetic clamping assemblies 2. When clamping, the frame is clamped between the magnetic seat 21 and the loading box 22 to form a first clamping area. The loading box 22 is subjected to downward pressure, and the frame is self-adapted clamped through the plurality of first rod-type elastic members 29 on the loading box 22 to form a wrapping. The first electromagnetic rod 27 is inserted into the first magnetic cylinder 28, and the first electromagnetic block 26 can be powered. The first electromagnetic rod 27 is magnetically connected with the first magnetic cylinder 28, the magnetorheological fluid in the first rod-type elastic member 29 is hardened, the clamping and positioning of the frame are realized, and the electromagnetic plate 101 is powered after the frame is clamped around by the plurality of first electromagnetic clamping assemblies 2 to fix the position of the first electromagnetic clamping assembly 2.

[0065] Step two: clamp the second electromagnetic clamping assembly 5 on the two sides of the top edge of the frame through the two traction ropes 4, so that the two traction ropes 4 are in a symmetrical inclined state, then adjust the tension of the traction rope 4 by the winding assembly 3, clamp the top edge of the frame, and place the frame in the second clamping area between the first loading seat 51 and the second loading seat 52. Then, the first loading seat 51 is subjected to upward pressure, and the plurality of second rod-type elastic members 58 on the first loading seat 51 are self-adapted clamped with the edge of the frame. The second electromagnetic rod 56 is inserted into the second magnetic cylinder 57, and the second electromagnetic block 55 can be powered. The second electromagnetic rod 56 is magnetically connected with the second magnetic cylinder 57, the magnetorheological fluid in the second rod-type elastic member 58 is hardened, and the clamping of the frame is realized.

[0066] Step three: when the traction rope 4 is wound and subjected to traction force by the winding assembly 3, the tension of the traction can be monitored in real time by the pressure warning member 41. If the tension exceeds the threshold, a warning is immediately given.

[0067] Step four: when welding the workpiece in the middle of the frame, the workpiece is placed in the middle of the frame by passing through the annular guide assembly 6, the annular guide assembly 6 is placed above the workpiece to be welded, and the position of the annular guide assembly 6 on the two second electromagnetic clamping assemblies 5 is adjusted, so that the elastic annular pressing piece 64 on the annular guide assembly 6 is pressed on the workpiece to be welded to prevent the workpiece from deviating during welding. At this time, the welding gun head is inserted into the insertion hole in the insertion block 613, and the welding gun head is aligned with the welding area of the workpiece. Then, the second motor 614 drives the gear 615 to move along the annular teeth 62, and the U-shaped seat 612 with the welding gun head inserted in the insertion block 613 moves along the welding area of the workpiece to perform annular welding on the workpiece.

[0068] The specific working principle of the present application is as follows:

[0069] The frame is placed on the electromagnetic plate 101 of the welding seat 1, and the frame is clamped into the first clamping area between the magnetic seat 21 and the loading box 22. The loading box 22 is pressed downward along the stand 23, compressing the first spring 25. The first rod-shaped elastic piece 29 is in contact with the frame and self-adapts to wrap and clamp. The first electromagnetic rod 27 is inserted into the first magnetic cylinder 28, and the first electromagnetic block 26 is powered. The first electromagnetic rod 27 is magnetically connected with the first magnetic cylinder 28. The magnetic rheological liquid in the first rod-shaped elastic piece 29 hardens, fixing the position of the frame. Then, the electromagnetic plate 101 is powered to fix the position of the first electromagnetic clamping assembly 2, and the bottom positioning of the frame is completed.

[0070] The second electromagnetic clamping assembly 5 on the two traction ropes 4 is clamped on the top edges of the frame on both sides, respectively, so that the frame is located in the second clamping area between the first loading seat 51 and the second loading seat 52. The first loading seat 51 is pressed upward, and the second spring 531 is compressed. The second rod-shaped elastic piece 58 self-adapts to clamp the edges of the frame. The second electromagnetic rod 56 is inserted into the second magnetic cylinder 57, and the second electromagnetic block 55 is powered. The second electromagnetic rod 56 is magnetically connected with the second magnetic cylinder 57. The magnetic rheological liquid in the second rod-shaped elastic piece 58 hardens, completing the clamping of the top edges of the frame. At this time, the two traction ropes 4 are in a symmetrical inclined state. The winding assembly 3 starts to work. The electric sliding rail 102 drives the winding box 31 to move to the appropriate position. The first motor 33 drives the winding roller 32 to rotate, winding or releasing the traction rope 4, adjusting the tension of the traction rope 4, and thus exerting a traction force on the two sides of the frame to balance the stress on the frame, avoid asymmetric stress concentration caused by instrument installation, and enhance the stability of the frame during installation. During the traction process, the pressure warning piece 41 monitors the traction force in real time. When the pressure of the sliding block 413 on the pressure sensor 412 exceeds the threshold value, the pressure sensor 412 transmits a signal to the buzzer 414, and the buzzer 414 issues an alarm to remind the operator to adjust the traction force to prevent damage to the frame or the clamping components.

[0071] When welding the workpiece in the middle of the frame, the workpiece is first passed through the annular guide assembly 6 and placed in the middle of the frame, the bolts 67 on the sleeve block 65 are loosened, the sleeve block 65 is slid on the stand 66, the height of the annular guide assembly 6 is adjusted, the elastic annular pressing piece 64 is pressed on the workpiece to be welded, the bolts 67 are tightened to fix the position, the third spring 641 in the elastic annular pressing piece 64 provides buffer and elastic pressure, the compression ring 642 tightly fits the workpiece to prevent the workpiece from deviating during welding, the welding gun head is inserted into the insertion hole in the insertion block 613, the second motor 614 is started to drive the gear 615 to move along the annular teeth 62, the U-shaped seat 612 slides in the annular groove 611 of the annular guide rail 61 to drive the insertion block 613 and the welding gun head to move along the workpiece to be welded, realizing annular welding of the workpiece, ensuring the stability and consistency of the welding process, and avoiding welding defects.

[0072] It should be understood that the above specific embodiments of the present application are only used for illustrative or explanatory purposes of the principles of the present application, and do not constitute a limitation of the present application. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present application shall be included in the protection scope of the present application. In addition, the appended claims of the present application are intended to cover all variations and modifications falling within the scope and boundary of the appended claims, or the equivalent forms of such scope and boundary.

Claims

1. A positioning device for a welding apparatus, the positioning device positioning a frame on which a workpiece is loaded, characterized by, Including welding seat (1), electromagnetic board (101), ring-shaped guide assembly (6) and welding torch head; The electromagnetic board (101) is installed in the middle of the welding seat (1), the top of the electromagnetic board (101) is provided with a first electromagnetic clamping assembly (2) for clamping the frame around, the first electromagnetic clamping assembly (2) comprises a plurality of first rod type elastic members (29) arranged in a rectangular array; Both sides of the welding seat (1) are provided with winding assemblies (3), and the winding assemblies (3) are adjustable at the edge position of the welding seat (1), both the winding assemblies (3) are wound with traction ropes (4), both the traction ropes (4) are connected with second electromagnetic clamping assemblies (5) for clamping the frame, the second electromagnetic clamping assemblies (5) comprise a plurality of second rod type elastic members (58) arranged in a rectangular array; The ring-shaped guide assembly (6) is detachably installed on the two second electromagnetic clamping assemblies (5), the position of the ring-shaped guide assembly (6) on the second electromagnetic clamping assemblies (5) is adjustable, and the ring-shaped guide assembly (6) is used for pressing and guiding the welding torch head to move along a ring-shaped path against the workpiece placed in the middle of the frame; The second electromagnetic clamping assembly (5) comprises a first loading seat (51) and a second loading seat (52), the second loading seat (52) is arranged above the first loading seat (51), a second clamping area is formed between the first loading seat (51) and the second loading seat (52), a first fixed tube (53) is installed on the side surface of the second loading seat (52), a second spring (531) is installed in the first fixed tube (53), a bearing block (532) is installed at the bottom of the second spring (531), a fixed rod (54) is installed on the first loading seat (51) and rotationally connected with the bearing block (532), a second electromagnetic block (55) is installed at the bottom of the first loading seat (51), and there is a spacing between the second electromagnetic block (55) and the first loading seat (51), a second electromagnetic rod (56) is installed on the second electromagnetic block (55) and passes through the top of the first loading seat (51), a second magnetic cylinder (57) is installed at the bottom of the second loading seat (52) and above the second electromagnetic rod (56) and is adapted to the second electromagnetic rod (56), a plurality of second rod type elastic members (58) are arrayed and installed on the first loading seat (51) and extend into the second clamping area, one end of the traction rope (4) is connected with the first fixed tube (53). The second rod type elastic member (58) comprises a second shaft tube (581), a plurality of installation channels in a rectangular array are arranged in the first loading seat (51), a plurality of second shaft tubes (581) are respectively installed in the installation channels, the second shaft tube (581) is provided with a magnetorheological fluid, the bottom of the second shaft tube (581) is slidably connected with a second electromagnetic rod (582) extending into the magnetorheological fluid, the bottom end of the second electromagnetic rod (582) is provided with a second end block (583) below the first loading seat (51), a second tension spring (584) is sleeved on the second electromagnetic rod (582), and the two ends of the second tension spring (584) are connected with the second shaft tube (581) and the second end block (583) respectively, the second electromagnetic rod (582) and the second electromagnetic block (55) are electrically connected through a second lead wire (586), and the top of the second shaft tube (581) is slidably connected with a second clamping rod (585) connected with the second electromagnetic rod (582), and the second clamping rod (585) is arranged in the second clamping area.

2. A positioning device for equipment welding according to claim 1, characterized in that, The first electromagnetic clamping assembly (2) further comprises a magnetic seat (21) and a loading box (22), the top of the electromagnetic plate (101) is provided with the magnetic seat (21) around, the loading box (22) is arranged above the magnetic seat (21), the first clamping area is formed between the magnetic seat (21) and the loading box (22), the side surface of the magnetic seat (21) is provided with a vertical column (23), the side surface of the loading box (22) is provided with an assembly block (24) slidably sleeved on the column (23), the column (23) is sleeved with a first spring (25), and the two ends of the first spring (25) are connected with the magnetic seat (21) and the assembly block (24) respectively, the top of the loading box (22) is provided with a first electromagnetic block (26), and there is a spacing between the first electromagnetic block (26) and the loading box (22), the bottom edge of the first electromagnetic block (26) is provided with a first electromagnetic rod (27) penetrating through the bottom of the loading box (22), the magnetic seat (21) is provided with a first magnetic cylinder (28) below the first electromagnetic rod (27) and matched with the first electromagnetic rod (27), and a plurality of first rod type elastic members (29) are arrayed on the loading box (22) and extend into the first clamping area.

3. A positioning device for equipment welding according to claim 2, characterized in that, The first rod elastic member (29) comprises a first shaft tube (291), a plurality of the first shaft tubes (291) are arranged in a rectangular array in the loading box (22), the first shaft tube (291) is provided with a magnetorheological fluid, the top of the first shaft tube (291) is inserted with a first electromagnetic rod (292) extending into the magnetorheological fluid, the top end of the first electromagnetic rod (292) is provided with a first end block (293), a first tension spring (294) is sleeved on the first electromagnetic rod (292), and the two ends of the first tension spring (294) are connected with the first shaft tube (291) and the first end block (293) respectively, the first electromagnetic rod (292) is connected with the first electromagnetic block (26) through a first lead wire (296), and the bottom end of the first electromagnetic rod (292) is connected with a first clamping rod (295), and the bottom end of the first clamping rod (295) slides through the bottom of the first shaft tube (291) and the loading box (22).

4. A positioning device for equipment welding according to claim 3, characterized in that, One end of the traction rope (4) is connected with the pressure warning member (41) through the first fixed tube (53). The pressure warning member (41) comprises a second fixed tube (411), the second fixed tube (411) is obliquely arranged on the side of the first fixed tube (53), the second fixed tube (411) is provided with a sliding block (413) slidingly, one end of the traction rope (4) slides through the bottom of the second fixed tube (411) and is connected with the sliding block (413), the bottom inner wall of the second fixed tube (411) is provided with a pressure sensor (412) facing the sliding block (413), the sliding block (413) is provided with a buzzer (414), and the pressure sensor (412) and the buzzer (414) are electrically connected.

5. A positioning device for equipment welding according to claim 4, characterized in that, The winding assembly (3) comprises a winding box (31), both sides of the top of the welding seat (1) are provided with an electric sliding rail (102), two winding boxes (31) are arranged at the driving ends of the two electric sliding rails (102) respectively, the side of the winding box (31) is provided with a first motor (33), the output end of the first motor (33) is connected with a winding roller (32) in the winding box (31), and the traction rope (4) is wound relative to the winding roller (32).

6. A positioning device for equipment welding according to claim 5, characterized in that, The annular guide assembly (6) comprises an annular guide rail (61), an annular tooth (62), an assembly ring (63), an elastic annular pressing piece (64), a sleeve block (65) and a stand (66), the stand (66) is installed on the two second loading seats (52), the sleeve block (65) is sleeved on the two stands (66) in sliding mode, the assembly ring (63) is connected between the two sleeve blocks (65), the sleeve block (65) is threadedly connected with the bolt (67) for pressing the stand (66), the annular tooth (62) is installed on the top of the assembly ring (63), the annular guide rail (61) is installed on the top of the annular tooth (62), the top of the annular guide rail (61) is provided with an annular groove (611), the annular guide rail (61) is provided with a U-shaped seat (612) in sliding mode with the annular groove (611), the middle part of the U-shaped seat (612) is rotatably installed with an insertion block (613), the insertion block (613) is provided with an insertion hole for inserting the head of the welding gun, the side surface of the U-shaped seat (612) is installed with a second motor (614), the output end of the second motor (614) is connected with a gear (615) engaged with the annular tooth (62), the bottom of the assembly ring (63) is installed with the elastic annular pressing piece (64) for pressing the workpiece.

7. A positioning device for equipment welding according to claim 6, characterized in that, The elastic annular pressing piece (64) comprises a third spring (641) and a pressing ring (642), the bottom of the assembly ring (63) is installed with a plurality of third springs (641), and the pressing ring (642) is installed at the bottom of the plurality of third springs (641).

8. A positioning method for equipment welding using the positioning device for equipment welding according to any one of claims 1 to 7, characterized by, The method comprises the following steps: Step one: place the frame on the electromagnetic plate (101) of the welding seat (1), clamp the frame around the bottom through a plurality of first electromagnetic clamping assemblies (2), when clamping, clamp the frame between the magnetic seat (21) and the loading box (22) to form a first clamping area, apply downward pressure to the loading box (22), and self-adaptively clamp the frame through a plurality of first rod type elastic pieces (29) on the loading box (22) to form a wrapping at the clamping part of the frame, the first electromagnetic rod (27) is inserted into the first magnetic cylinder (28), the first electromagnetic block (26) can be energized, the first electromagnetic rod (27) and the first magnetic cylinder (28) are magnetically connected, the magnetorheological fluid in the first rod type elastic piece (29) is hardened, the clamping and positioning of the frame are realized, and after the frame is clamped around by the plurality of first electromagnetic clamping assemblies (2), the electromagnetic plate (101) can be energized to fix the position of the first electromagnetic clamping assembly (2); Step two: the second electromagnetic clamping assembly (5) on the two traction ropes (4) is clamped on the two side edges of the top of the frame respectively, so that the two traction ropes (4) are in a symmetrical inclined state, and then the traction ropes (4) are pulled through the winding assembly (3), the tension of the traction ropes (4) is adjusted, and the frame is clamped on the top edge, so that the frame is placed in the second clamping area between the first loading seat (51) and the second loading seat (52), then the first loading seat (51) is subjected to upward pressure, a plurality of second rod type elastic members (58) on the first loading seat (51) are self-adapted and clamped with the edge of the frame, the second electromagnetic rod (56) is inserted into the second magnetic cylinder (57), the second electromagnetic block (55) can be powered, the second electromagnetic rod (56) is magnetically connected with the second magnetic cylinder (57) immediately, the magnetorheological fluid in the second rod type elastic member (58) is hardened, and the clamping of the frame is realized; Step three: when the traction rope (4) is wound and pulled by the winding assembly (3), the tension of the traction can be monitored in real time by the pressure warning member (41), and when the tension exceeds the threshold, an early warning is immediately given; Step four: when the workpiece is welded in the middle of the frame, the workpiece is placed in the middle of the frame by passing through the annular guide assembly (6), the annular guide assembly (6) is placed above the workpiece to be welded, the position of the annular guide assembly (6) on the two second electromagnetic clamping assemblies (5) is adjusted, so that the elastic annular pressing piece (64) on the annular guide assembly (6) is pressed on the workpiece to be welded, so as to prevent the workpiece from deviating during welding, at this time, the welding gun head is inserted into the insertion hole in the insertion block (613), so that the welding gun head is aligned with the workpiece to be welded, then the second motor (614) drives the gear (615) to move along the annular teeth (62), the U-shaped seat (612) with the welding gun head inserted in the insertion block (613) moves along the workpiece to be welded in a ring shape, and the workpiece is ring welded.

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