A welding device for building steel bars

Abstract

The present invention belongs to the technical field of steel bar welding, and specifically provides a welding device for building steel bars, including a vertical plate, a slide, a limit plate, a gripping unit and a welding unit. The slide is fixed to the side wall of the vertical plate, the limit plate is vertically slidably connected to the slide, the gripping unit is arranged on the side wall of the vertical plate, the welding unit is vertically slidably connected to the slide, and the welding unit is located below the limit plate. The present invention utilizes the guiding effect of the guide groove to realize the automatic extension and retraction of the welding gun. During the extension and retraction process of the welding gun, the linkage groove is utilized to realize the automatic steering of the welding gun to reach the lap welding station. The commutator arranged on the welding unit adopts a clever circuit design, so that the welding unit can automatically rise and fall and switch, and realizes the reciprocating full welding of the double-sided lap joints of the steel bars, which significantly improves the welding quality and the welding efficiency, and effectively solves the technical problems that the prior art relies more on manual labor, it is difficult to ensure the quality of lap welding, and the lap welding efficiency is low.

Description

Technical Field

[0001] The invention belongs to the technical field of steel bar welding, and in particular relates to a welding device for building steel bars. Background Art

[0002] During the construction process, steel bars need to be connected to ensure the integrity of the steel bar skeleton. The main methods of steel bar connection include binding connection, welding connection and threaded sleeve connection. For column bars, they need to be connected as the building floors are constructed. The longitudinal bars of the floor to be constructed (steel bars to be welded) are connected to the longitudinal bars (reserved steel bars) extending from the floor below where concrete has been poured, and then tied. The longitudinal bars in the column bars are generally connected by welding or threaded sleeves. The threaded sleeve connection method requires threading of the steel bar ends. The steel bar processing process is relatively cumbersome, while welding is more convenient. Construction workers can perform lap welding directly on the construction floor surface.

[0003] In the prior art, most of the steel bar welding devices are bulky and large equipment, which are not convenient to carry and transfer. They are only suitable for pre-welding and processing steel bars in steel bar sheds. The longitudinal reinforcement lap welding in the column reinforcement needs to be carried out on the construction floor, and it is impossible to weld in advance in the steel bar processing shed. Therefore, the prior art is generally difficult to apply to the welding construction of such steel bars. The prior art mostly uses manual column reinforcement welding. During welding, it is necessary to hold the steel bar to be welded and overlap the reserved steel bar on the floor, and then hold the welding equipment to weld the overlapped parts of the two steel bars. This welding method has many problems:

[0004] (1) Uneven lap length: The lap length is mostly determined manually and lacks accurate measurement. The lap length needs to be determined based on the steel bar construction specifications and the steel bar diameter. If the lap length is too long, it will lead to steel bar waste, and the reserved length of the steel bar in the next layer will be shortened, affecting the efficiency of the next steel bar cutting. If the lap length is too short, the force transmission performance of the steel bar will be reduced, affecting the safety of the structure.

[0005] (2) Welded steel bars are prone to deflection: Manual lap welding can easily lead to a large angle deviation between the two welded steel bars, which affects the binding of stirrups and causes bending stress in the steel bars themselves, thus affecting the safety of the structure;

[0006] (3) Manual welding efficiency is low, and it is difficult to ensure full welding of the lap seams on both sides, which affects the welding quality.

[0007] The prior art lacks a device that is easy to carry and use, can efficiently lap weld column longitudinal reinforcement on the construction floor, can accurately control the lap length, ensure full welding of the lap seams on both sides, and effectively control the steel bar welding angle deviation. Summary of the invention

[0008] The present invention overcomes the shortcomings of the prior art and provides a welding device for building steel bars, which utilizes the guiding effect of the guide groove to achieve the automatic extension and retraction effect of the welding gun. At the same time, during the extension and retraction process of the welding gun, the linkage groove is utilized to achieve the effect of automatic steering of the welding gun to reach the lap welding position. The above process can be achieved by only requiring the lifting and lowering action of the welding unit, and the commutator arranged on the welding unit adopts a clever circuit design. The welding unit can utilize its own lifting and lowering movement to automatically realize the switching control of its own movement direction, thereby achieving reciprocating full welding of the double-sided lap joints of the steel bars, significantly improving the welding quality, and improving the welding efficiency, and effectively solving the technical problems of the prior art that it relies heavily on manual labor, is difficult to ensure the quality of lap welding, and has low lap welding efficiency.

[0009] The technical solution adopted by the present invention is as follows: This solution provides a welding device for building steel bars, including a vertical plate, a slide, a limit plate, a gripping unit and a welding unit. The slide is fixed to the side wall of the vertical plate, the limit plate is vertically slidably clamped on the slide, the gripping unit is arranged on the side wall of the vertical plate, the welding unit is vertically slidably clamped on the slide, the welding unit is located below the limit plate, a clamping member is fixedly provided on the upper part of the side wall of the vertical plate close to the slide, guide grooves are mirror-symmetrically provided on two opposite side walls of the vertical plate, the welding unit includes a welding box, a welding gun and a connecting rod, and the welding box is vertically slidably clamped on the slide The welding gun is symmetrically distributed, slides and rotates through the welding box. The connecting rod is arranged at one end of the welding gun close to the vertical plate. The connecting rod and the welding gun are horizontally coaxially rotatably connected. The connecting rods are respectively arranged on both sides of the vertical plate. The ends of the connecting rods are movably embedded in the guide grooves. The gripping unit includes a gripping bracket, an elastic traction member, an upper hook plate and a lower hook plate. The gripping bracket is fixed on the side wall of the vertical plate, the elastic traction member slides through the side wall of the gripping bracket, the upper hook plate is horizontally slidably arranged on the limit plate, the lower hook plate is horizontally slidably arranged on the lower edge of the side wall of the slide, the lower hook plate is fixedly connected to the elastic traction member, and the upper hook plate and the elastic traction member are slidably engaged.

[0010] The guide groove is formed by smoothly connecting the vertical groove and the inclined groove, the inclined groove is located at the lower end of the vertical groove, the connecting rod end is rotatably provided with a guide button, the guide button is movably arranged in the guide groove, the circumferential side wall of the connecting rod is horizontally provided with an anti-rotation groove, the two outer side walls of the welding box opposite to each other are respectively horizontally fixed with an anti-rotation rod, and the anti-rotation rod extends along the axis direction of the connecting rod, and the end of the anti-rotation rod is fixed with a clamping block, the clamping block is movably clamped in the anti-rotation groove, the clamping block on the anti-rotation rod and the anti-rotation groove make the connecting rod unable to rotate and can only move horizontally, so that the guide button is always located in the guide groove, and the circumferential side wall of the welding gun is provided with a linkage groove, the linkage groove is smoothly connected with the flat groove and the steering groove, the flat groove is horizontally arranged, the steering groove is located at one end of the flat groove close to the connecting rod, the steering groove is spirally arranged 90° around the welding gun as the axis, the inner wall of the welding box is fixed with a steering guide rod, the steering guide rod is movably clamped in the linkage groove, the side wall of the welding box is fixed with a lifting motor, and the side wall of the welding box close to the slide is rotated with a lifting gear, and the lifting The lowering motor is connected with the lifting gear transmission connection, the output end of the lifting motor is coaxially fixedly connected with the first bevel gear, the lifting gear is coaxially fixedly connected with the second bevel gear, the first bevel gear and the second bevel gear are meshed, and a commutator is provided on the welding box, the commutator includes a commutation cylinder and a two-way pressure rod, the commutation cylinder is vertically fixedly arranged in the welding box, the upper and lower ends of the commutation cylinder respectively pass through the upper and lower walls of the welding box, the two-way pressure rod is vertically slidably arranged on the inner wall of the commutation cylinder, the length of the two-way pressure rod is greater than the length of the commutation cylinder, and elastic electric sheets are respectively fixedly arranged on the two opposite side walls of the two-way pressure rod, the first card slots are symmetrically distributed on the opposite side walls in the commutation cylinder, and the second card slots are symmetrically distributed on the opposite side walls in the commutation cylinder, the first card slot is arranged above the second card slot, the first card slot and the second card slot are respectively located on the movement path of the elastic electric sheet, the first card slot is fixedly provided with the first electric sheet, the second card slot is fixedly provided with the second electric sheet, the elastic electric sheet and the lifting motor are electrically connected, and a power-off delay relay is connected in series in the circuit of the lifting motor.

[0011] Furthermore, racks are symmetrically distributed and fixed on the inner side walls facing each other, and the lifting gear is engaged with one of the racks. A lower support plate is horizontally slidably provided at the lower end of the slide, and a bottom support spring is connected between the lower support plate and the bottom of the slide side wall.

[0012] The locking plate is provided with a locking piece, the locking piece is located between the two racks, and the locking piece is engaged with the rack in a natural state. The locking piece comprises a control box, a button, a locking slide plate and a locking tooth block. The control box is fixedly arranged on the side wall of the limit plate, the button is vertically slidably arranged on the upper wall of the control box, the locking slide plate is horizontally slidably arranged on the inner wall of the limit plate, the locking tooth blocks are symmetrically distributed and horizontally slide through the side walls of the limit plate, and the two locking tooth blocks are respectively arranged at the two racks. A wedge block is fixedly arranged on the upper wall of one end of the locking slide plate close to the button, and the lower end of the button is movably contacted with the inclined surface of the wedge block. One end of the locking slide plate close to the locking tooth block is a pointed end, and the ends of the two locking tooth blocks close to the locking slide plate are respectively movably contacted with the two side walls of the locking slide plate, and the ends of the locking tooth block close to the rack are provided with teeth. The locking tooth block meshes with the rack after extending out of the side wall of the limit plate, an unlocking spring is connected between the two locking tooth blocks, and a locking spring is connected between the side wall of the locking slide plate and the inner wall of the limit plate.

[0013] The cam is provided with a first sliding groove, and the lower hook plate is fixed with a lower sliding groove, and the lower hook plate is fixed with an upper sliding groove plate on the side wall of the lower groove plate, and the lower hook plate is fixed with an upper sliding groove plate on the side wall of the upper groove plate. The middle of the upper sliding groove passes through the second sliding groove, and the end of the upper sliding groove is movably arranged in the longitudinal groove.

[0014] Preferably, the clamping member includes a clamping frame, a clamping plate, a clamping wheel and a top support rod. The clamping frame is fixedly arranged on the side wall of the vertical plate, the clamping plates are symmetrically distributed and rotatably arranged on the inner wall of the clamping frame, the clamping wheel is rotatably arranged on the end of the clamping plate, the top support rod is slidably arranged on the middle side wall of the clamping frame, and a spring sheet is connected between the clamping plate and the side walls facing each other of the clamping frame. A top support spring is sleeved on the top support rod, and both ends of the top support spring are respectively fixedly connected to the end of the top support rod and the side wall of the clamping frame.

[0015] The beneficial effects achieved by the present invention are as follows:

[0016] (1) In order to perform lap welding on the longitudinal reinforcement of the column, the present invention creatively designs a welding unit that is lifted and lowered along the slide, and utilizes the guiding effect of the guide groove to realize the automatic extension and retraction effect of the welding gun. At the same time, during the extension and retraction process of the welding gun, the linkage groove is utilized to realize the automatic steering of the welding gun so as to reach the lap welding position. The above process can be realized only by the lifting and lowering action of the welding unit, and the commutator provided on the welding unit adopts a clever circuit design. The welding unit can utilize its own lifting and lowering motion to automatically realize the switching control of its own movement direction, thereby realizing the reciprocating full welding of the lap joints on both sides of the steel bars, significantly improving the welding quality and improving the welding efficiency.

[0017] (2) The area between the limit plate and the lower support plate is the welding area for the steel bars to be welded and the reserved steel bars. By adjusting the position of the limit plate on the slide, the length of the welding area can be adjusted, so that the lap welding length can be accurately controlled. The limit plate and the slide can be automatically locked and automatically unlocked after being pressed. The adjustment method is very simple and easy to operate.

[0018] (3) The gripping unit uses elastic gripping to tighten the steel bars to be welded and the reserved steel bars, and can fix the steel bars without manual docking, saving manpower and preventing the welding failure caused by manual gripping of the steel bars. The reliability of the welding process is ensured, and it can ensure that there will be no large angle deviation between the steel bars to be welded and the reserved steel bars;

[0019] (4) The block and anti-rotation groove on the anti-rotation rod prevent the connecting rod from rotating and can only move horizontally, so that the guide button is always located in the guide groove;

[0020] (5) The rack on the slide can not only lock the limit plate, but also provide lifting power for the welding unit;

[0021] (6) A movable upper hook plate is used to connect the limit plate and the gripping unit. The limit plate drives the upper slot plate to move, and drives the upper lever and the upper hook plate to move through the second slide slot, and the upper lever slides along the longitudinal slot. This setting ensures that the normal use function of the gripping unit will not be affected by the adjustment of the limit plate;

[0022] (7) The entire equipment is easy to carry and convenient to use on the construction floor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A structural schematic diagram of a welding device for building steel bars proposed by the present invention Figure 1 ;

[0024] Figure 2 A structural schematic diagram of a welding device for building steel bars proposed by the present invention Figure 2 ;

[0025] Figure 3 It is a structural schematic diagram of the welding unit proposed by the present invention;

[0026] Figure 4 for Figure 1 A partial enlarged view of part A in FIG.

[0027] Figure 5 A cross-sectional structural diagram of a welding unit proposed in the present invention;

[0028] Figure 6 A schematic diagram of the structure of the welding gun proposed by the present invention;

[0029] Figure 7 A side cross-sectional view of the commutator provided by the present invention;

[0030] Figure 8 A schematic diagram of the circuit connection of the commutator and the lifting motor proposed by the present invention;

[0031] Fig. 9 for Figure 1 A partial enlarged view of part B in FIG.

[0032] Fig.10 A partial cross-sectional structural diagram of the limiting plate proposed by the present invention;

[0033] Fig.11 This is a schematic diagram of the structure of the gripping bracket and the elastic traction member proposed in the present invention;

[0034] Fig.12 A side sectional view of a welding device for construction steel bars proposed by the present invention (the left side figure is a side sectional view of a welding device for construction steel bars, and the right side figure is a partial enlarged view of the dotted frame portion of the left side figure).

[0035] Among them, 1, vertical plate, 11, clamping member, 111, clamping frame, 112, clamping plate, 113, clamping wheel, 114, top support rod, 115, spring, 116, top support spring, 12, guide groove, 121, vertical groove, 122, inclined groove, 2, slide, 21, rack, 22, lower support plate, 221, bottom support spring, 23, lower groove plate, 231, first slide groove, 3, limit plate, 31, limit groove , 32, locking piece, 321, control box, 322, button, 323, locking slide, 3231, wedge block, 3232, pointed end, 3233, locking spring, 324, locking tooth block, 3241, tooth, 3242, unlocking spring, 33, upper groove plate, 331, second slide groove, 4, grip unit, 41, grip bracket, 42, elastic traction member, 421, traction rod, 4211 , grip spring, 422, pressing rod, 423, lap rod, 4231, longitudinal groove, 43, upper hook plate, 431, upper lever, 44, lower hook plate, 441, lower lever, 5, welding unit, 51, welding box, 511, anti-rotation rod, 5111, block, 512, steering guide rod, 513, lifting motor, 5131, first bevel gear, 514, lifting gear, 5141, second bevel gear , 515, commutator, 516, commutator cylinder, 5161, first slot, 5162, second slot, 5163, first electric sheet, 5164, second electric sheet, 517, bidirectional pressure rod, 5171, elastic electric sheet, 52, welding gun, 521, linkage slot, 5211, flat slot, 5212, steering slot, 53, connecting rod, 531, guide button, 532, anti-rotation slot, KT, power-off delay relay.

[0036] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0037] Example 1: Please refer to Figure 1 and Figure 4 The present embodiment provides a welding device for building steel bars, including a vertical plate 1, a slide 2, a limit plate 3, a gripping unit 4 and a welding unit 5. The slide 2 is fixedly arranged on the side wall of the vertical plate 1, the limit plate 3 is vertically slidably clamped on the slide 2, the gripping unit 4 is arranged on the side wall of the vertical plate 1, the welding unit 5 is vertically slidably clamped on the slide 2, and the welding unit 5 is located below the limit plate 3. The two opposite side walls of the vertical plate 1 are mirror-symmetrically provided with guide grooves 12. The guide groove 12 is formed by smoothly connecting a vertical groove 121 and an inclined groove 122. The inclined groove 122 is located at the lower end of the vertical groove 121, and the setting direction of the inclined groove 122 is gradually away from the slide 2 from top to bottom.

[0038] like Figure 1 , Figure 3-Figure 6As shown, the welding unit 5 includes a welding box 51, a welding gun 52 and a connecting rod 53. The welding box 51 is vertically slidably connected to the slide 2, and the welding gun 52 is symmetrically distributed, slides and rotates through the welding box 51. The connecting rod 53 is arranged at one end of the welding gun 52 close to the vertical plate 1. The connecting rod 53 and the welding gun 52 are horizontally coaxially connected. The connecting rod 53 is respectively arranged on both sides of the vertical plate 1. A guide button 531 is rotatably arranged at the end of the connecting rod 53. The guide button 531 is movably arranged in the guide groove 12. The connecting rod 5 The circumferential side wall is horizontally provided with an anti-rotation groove 532, and the two outer side walls opposite to each other of the welding box 51 are respectively horizontally fixed with anti-rotation rods 511, which extend along the axis direction of the connecting rod 53, and the end of the anti-rotation rod 511 is fixed with a clamping block 5111, which is movably clamped into the anti-rotation groove 532. The arrangement of the clamping block 5111 on the anti-rotation rod 511 and the anti-rotation groove 532 prevents the connecting rod 53 from rotating and can only move horizontally, so that the guide button 531 is always located in the guide position. In the groove 12, a linkage groove 521 is provided on the circumferential side wall of the welding gun 52, and the linkage groove 521 is formed by smoothly connecting the flat groove 5211 and the steering groove 5212. The flat groove 5211 is arranged horizontally, and the steering groove 5212 is located at one end of the flat groove 5211 close to the connecting rod 53. The steering groove 5212 is arranged in a spiral shape around 90 degrees with the welding gun 52 as the axis. A steering guide rod 512 is fixed on the top wall of the welding box 51, and the steering guide rod 512 is movably inserted into the linkage groove 521, and the welding gun A welding gun head is fixedly provided on the circumferential side wall of the end portion 52 away from the connecting rod 53 for welding the lap joints of the steel bars. A lifting motor 513 is fixedly provided on the side wall of the welding box 51. A lifting gear 514 is rotatably provided on the side wall of the welding box 51 close to the slide 2. A first bevel gear 5131 is coaxially fixedly connected to the output end of the lifting motor 513. A second bevel gear 5141 is coaxially fixedly connected to the lifting gear 514. The first bevel gear 5131 is meshed with the second bevel gear 5141.

[0039] like Figure 3 , Figure 7 and Figure 8As shown, a commutator 515 is provided on the welding box 51, and the commutator 515 includes a commutator cylinder 516 and a bidirectional pressure rod 517. The commutator cylinder 516 is vertically fixed in the welding box 51, and the upper and lower ends of the commutator cylinder 516 respectively penetrate the upper and lower walls of the welding box 51, and the bidirectional pressure rod 517 is vertically slidably provided on the inner wall of the commutator cylinder 516. The length of the bidirectional pressure rod 517 is greater than the length of the commutator cylinder 516. Elastic electric sheets 5171 are fixed on two opposite side walls of the bidirectional pressure rod 517, and the first card slots 5161 are symmetrically distributed on the opposite side walls of the commutator cylinder 516, and the second card slots 516 are symmetrically distributed on the opposite side walls of the commutator cylinder 516. The first card slot 5162 is provided, the first card slot 5161 is provided above the second card slot 5162, the first card slot 5161 and the second card slot 5162 are respectively located on the movement path of the elastic electric sheet 5171, the first card slot 5161 is fixedly provided with the first electric sheet 5163, the second card slot 5162 is fixedly provided with the second electric sheet 5164, the elastic electric sheet 5171 and the lifting motor 513 are electrically connected, the first electric sheet 5163 and the second electric sheet 5164 are respectively connected to the power supply, and when the two elastic electric sheets 5171 are respectively located in the first card slot 5161, the elastic electric sheets 5171 are respectively in contact with and electrically connected to the first electric sheet 5163, that is, Figure 7 The status and Figure 8 The circuit connection relationship in Figure 8 In the embodiment, the current direction at the lifting motor 513 is from right to left. At this time, the upper end of the two-way pressure rod 517 extends out of the upper wall of the welding box 51. When the upper wall of the two-way pressure rod 517 is pressed downward, the two-way pressure rod 517 slides downward, and the upper end of the two-way pressure rod 517 will be flush with the upper wall of the welding box 51, and the lower end of the two-way pressure rod 517 extends out of the lower wall of the welding box 51. At this time, the two elastic electric sheets 5171 respectively enter the second card slot 5162 and contact and electrically connect with the second electric sheet 5164. At this time, Figure 8 In the figure, the current direction at the lifting motor 513 is from left to right. The lifting motor 513 drives the welding box 51 to move, and the up and down sliding of the bidirectional pressure rod 517 on the commutator 515 caused by being squeezed is combined to realize the automatic switching of the current direction of the lifting motor 513.

[0040] like Figure 4 , Figure 5 As shown, racks 21 are symmetrically distributed and fixed on the inner side walls facing each other, and the lifting gear 514 is engaged with one of the racks 21. A lower support plate 22 is provided at the lower end of the slide 2 for horizontal sliding. A bottom support spring 221 is connected between the lower support plate 22 and the bottom of the side wall of the slide 2. The side wall at the end of the lower support plate 22 is set to an inner arc shape, which is used to support and limit the reserved steel bars.

[0041] like Figure 4 , Fig. 9 , Fig.10As shown, a limiting groove 31 is provided on the side wall of the limiting plate 3, and a locking piece 32 is provided on the limiting plate 3. The locking piece 32 is located between the two racks 21. The locking piece 32 is engaged with the rack 21 in a natural state. The locking piece 32 includes a control box 321, a button 322, a locking slide plate 323 and a locking tooth block 324. The control box 321 is fixedly arranged on the side wall of the limiting plate 3, the button 322 is vertically slidably arranged on the upper wall of the control box 321, the locking slide plate 323 is horizontally slidably arranged on the inner wall of the limiting plate 3, and the locking tooth blocks 324 are symmetrically distributed and horizontally slidably penetrate the side wall of the limiting plate 3. The two locking tooth blocks 324 are respectively arranged at the two racks 21, and the locking slide plate 323 is close to the button 32. The upper wall of one end of 2 is fixed with a wedge block 3231, the lower end of the button 322 is movably in contact with the inclined surface of the wedge block 3231, the end of the locking slide plate 323 close to the locking tooth block 324 is a pointed end 3232, the ends of the two locking tooth blocks 324 close to the locking slide plate 323 are movably in contact with the two side walls of the locking slide plate 323, and the ends of the locking tooth blocks 324 close to the rack 21 are respectively movably in contact with the two side walls of the locking slide plate 323, and the ends of the locking tooth blocks 324 close to the rack 21 are provided with teeth 3241, and the locking tooth blocks 324 extend out of the side wall of the limiting plate 3 and mesh with the rack 21, an unlocking spring 3242 is connected between the two locking tooth blocks 324, and a locking spring 3233 is connected between the side wall of the locking slide plate 323 and the inner wall of the limiting plate 3. Fig.10 When the locking plate 323 is in the unlocking state, the locking plate 323 is locked and the locking plate 323 is locked. The tooth blocks 324 are moved closer to each other due to the pulling force of the unlocking spring 3242, and fit with the two inclined side walls of the pointed end 3232. At this time, the tooth 3241 will retract into the inside of the limit plate 3, and will no longer engage with the rack 21, thereby unlocking the limit plate 3. This setting method can facilitate the operator to adjust the position of the limit plate 3, thereby adjusting the distance between the limit plate 3 and the lower support plate 22, that is, adjusting the lap weld length. In order to more accurately control the lap weld length, a scale line (not shown in the figure) is set on the side wall of the slide 2, and the operator can adjust the position of the limit plate 3 according to the scale line.

[0042] like Figure 1 , Figure 2 , Fig.11 and Fig.12As shown, a lower groove plate 23 is horizontally fixed on the side wall of the lower end of the slide 2, and a first slide groove 231 is horizontally opened on the side wall of the lower groove plate 23, an upper groove plate 33 is fixed on the lower wall of the limiting plate 3, and a second slide groove 331 is horizontally opened on the side wall of the upper groove plate 33, and the gripping unit 4 includes a gripping bracket 41, an elastic traction member 42, an upper hook plate 43 and a lower hook plate 44, the gripping bracket 41 is fixed to the side wall of the vertical plate 1, the elastic traction member 42 slides through the side wall of the gripping bracket 41, the lower hook plate 44 slides horizontally on the side wall of the lower groove plate 23, and the upper hook plate 43 slides horizontally on the side wall of the upper groove plate 33, the elastic traction member 42 includes a traction rod 421, a pressing rod 422 and a lap rod 423, and four traction rods 421 are provided, and the traction rods 421 slide horizontally through the side walls of the gripping bracket 41, the pressing rod 422 is fixedly connected to one end of all the traction rods 421, and the overlapping rods 423 are fixedly connected to the other ends of all the traction rods 421. A gripping spring 4211 is sleeved on the outside of the traction rod 421, and the two ends of the gripping spring 4211 are respectively fixedly connected to the side walls facing the gripping bracket 41 and the overlapping rod 423. A longitudinal groove 4231 is provided on the side walls of the overlapping rod 423 near the upper hook plate 43 and the lower hook plate 44, and a lower lever 441 is fixedly provided on the side wall of the lower hook plate 44 near the overlapping rod 423. The lower lever 441 passes through the first sliding groove 231 and is fixedly connected to the side wall of the overlapping rod 423. The upper lever 431 is fixedly provided on the side wall of the upper hook plate 43 near the overlapping rod 423. The middle part of the upper lever 431 passes through the second sliding groove 331, and the end of the upper lever 431 is movably arranged in the longitudinal groove 4231.

[0043] When this embodiment is used in practice, it is necessary to place the lower end of the steel bar to be welded on the lower support plate 22, and push the middle part of the steel bar to be welded into the limiting groove 31, and then make the upper end of the reserved steel bar press against the lower wall of the limiting plate 3, and use the gripping unit 4 to grip the overlapping part of the steel bar to be welded and the reserved steel bar, and then use the welding unit 5 to weld the overlapping seam.

[0044] In the initial state, the welding unit 5 is located at the bottom of the carriage 2. At this time, the guide button 531 is located at the bottom of the inclined slot 122. Figure 5 and Figure 6 For example, the connecting rod 53 is farthest from the welding box 51 at this time, and the welding gun 52 and the connecting rod 53 slide to the far left as a whole. At this time, the rightmost end of the flat groove 5211 is located at the steering guide rod 512, and the welding gun heads at the ends of the two welding guns 52 are facing downward, and the two welding guns 52 are in a retracted state, which does not affect the entry of the steel bars to be welded into the equipment. At the same time, the commutator 515 at this time is as shown in FIG. Figure 7 and Figure 8As shown, the elastic electric sheet 5171 is respectively located in the first slot 5161 and contacts and is electrically connected to the first electric sheet 5163, and the upper end of the bidirectional pressure rod 517 extends out of the upper wall of the welding box 51; in the initial state, the locking piece 32 is engaged with the rack 21, and the tension of the gripping spring 4211 makes the lap rod 423 close to the gripping bracket 41, and the longitudinal groove 4231 on the lap rod 423 makes the upper hook plate 43 and the lower hook plate 44 close to the slide 2. At this time, the gripping unit 4 is in a gripping state.

[0045] Before lap welding, the operator needs to set the lap welding length according to the steel bar diameter and steel bar construction specifications: the operator presses the button 322, and the interaction between the button 322 and the wedge block 3231 causes the locking slide plate 323 to slide to the left and stretch the locking spring 3233. When the two inclined side walls of the pointed end 3232 move to the locking tooth block 324, the two locking tooth blocks 324 approach each other due to the pulling force of the unlocking spring 3242, and fit with the two pointed angle inclined side walls of the pointed end 3232. At this time, the tooth 3241 will retract the limit plate 3241. The inner portion is no longer engaged with the rack 21, thereby achieving unlocking of the limit plate 3. The operator adjusts the position of the limit plate 3 according to the scale line, thereby adjusting the distance between the limit plate 3 and the lower support plate 22, that is, adjusting the lap weld length. During this adjustment process, the limit plate 3 drives the upper groove plate 33 to move, and drives the upper lever 431 and the upper hook plate 43 to move through the second slide groove 331, and the upper lever 431 slides along the longitudinal groove 4231. This setting ensures that the normal use function of the gripping unit 4 will not be affected by the adjustment of the limit plate 3.

[0046] Then, the steel bars to be welded and the reserved steel bars need to be placed into the equipment: the operator presses the pressing rod 422 to move the pressing rod 422 toward the gripping bracket 41, so that the traction rod 421 drives the lap rod 423 to move, and the longitudinal groove 4231 drives the upper hook plate 43 and the lower hook plate 44 to move and move away from the slide 2 through the upper lever 431 and the lower lever 441, thereby providing entry space for the steel bars to be welded and the reserved steel bars, placing the lower end of the steel bars to be welded on the lower support plate 22, and pushing the middle part of the steel bars to be welded into the limit position. In the groove 31, the upper end of the reserved steel bar is pressed against the lower wall of the limit plate 3, and the inner arc-shaped side wall of the lower support plate 22 laterally supports the middle part of the reserved steel bar due to the action of the bottom support spring 221. After the steel bar is in place, the operator releases the pressing rod 422, and the tension of the gripping spring 4211 causes the upper hook plate 43 and the lower hook plate 44 to grip the reserved steel bar, so that the reserved steel bar is close to the steel bar to be welded, and the upper hook plate 43 and the lower hook plate 44 can grip and clamp the reserved steel bar to prevent the two steel bars from deflecting.

[0047] After the reinforcing bars are placed, welding begins. The lifting motor 513 and the welding gun 52 are started. The lifting motor 513 drives the first bevel gear 5131 to rotate, and drives the lifting gear 514 to rotate through the second bevel gear 5141. Since the lifting gear 514 and the rack 21 are meshed and connected, the welding box 51 as a whole will rise along the slide 2. At this time, the guide button 531 on the connecting rod 53 will also rise. Due to the guiding effect of the inclined groove 122, the guide button 531 will make the connecting rod 53 gradually slide close to the welding box 51, and push the welding gun 52 out of the welding box 51 and move toward the lap joint of the two reinforcing bars. The block 5111 on the anti-rotation rod 511 and the anti-rotation groove 532 The setting makes it impossible for the connecting rod 53 to rotate and can only move horizontally, so that the guide button 531 is always located in the guide groove 12. During this process, the welding gun 52 drives the linkage groove 521 to move synchronously. When the steering groove 5212 moves to the steering guide rod 512, due to the guiding effect of the steering groove 5212, the welding gun 52 will gradually rotate and the welding gun head will be horizontally oriented to the lap joint of the two steel bars, so that welding can be automatically performed. At this time, the guide button 531 enters the vertical groove 121, and the welding gun 52 no longer retracts. Next, the lifting motor 513 drives the welding box 51 to rise, and the welding gun head on the welding gun 52 performs double-sided welding on the lap joint of the steel bar to be welded and the reserved steel bar.

[0048] In order to ensure the welding quality and welding integrity, a commutator 515 is provided on the welding box 51 in this embodiment to control the automatic reciprocating movement of the welding box 51, so as to perform reciprocating welding on the lap joint of the steel bars. When the welding box 51 rises to the top, the upper end of the two-way pressure rod 517 will touch the lower wall of the limit plate 3, and the welding box 51 continues to move upward. The upper wall of the two-way pressure rod 517 is pressed downward, and the two-way pressure rod 517 slides downward relative to the commutating cylinder 516. The lower end of the two-way pressure rod 517 extends out of the lower wall of the welding box 51. At this time, the two elastic electric sheets 5171 respectively enter the second card slot 5162 and contact and electrically connect with the second electric sheet 5164. At this time, the current of the lifting motor 513 is The direction is automatically switched, so that the lifting motor 513 runs in the opposite direction, thereby driving the welding box 51 to move downward, and the steel bar lap joint is welded again. After the lower wall of the welding box 51 reaches the inner bottom wall of the slide 2, the lower wall of the two-way pressure rod 517 is blocked by the inner bottom wall of the slide 2, thereby pushing the two-way pressure rod 517 to the initial state and realizing reversal again; in order to enable the lifting motor 513 to continue to run for a period of time after the elastic electric sheet 5171 leaves the first electric sheet 5163 and push the elastic electric sheet 5171 to the second electric sheet 5164, a power-off delay relay KT is connected in series in the circuit of the lifting motor 513 to ensure that the elastic electric sheet 5171 can smoothly switch the connection point.

[0049] After the welding is completed, the device returns to its original state, and the operator presses the pressing rod 422 again to push the two welded steel bars out of the device, and then the next operation can be carried out.

[0050] Embodiment 2: This embodiment is based on embodiment 1. In order to reliably clamp the steel bars to be welded, thereby ensuring the quality of the lap weld, please refer to Figure 1 and Fig. 9 In the present embodiment, a clamping member 11 is fixedly provided on the upper part of the side wall of the vertical plate 1 close to the slide 2, and the clamping member 11 comprises a clamping frame 111, a clamping plate 112, a clamping wheel 113 and a top support rod 114. The clamping frame 111 is fixedly provided on the side wall of the vertical plate 1, the clamping plates 112 are symmetrically distributed and rotatably provided on the inner wall of the clamping frame 111, the clamping wheel 113 is rotatably provided on the end of the clamping plate 112, and the top support rod 114 is slidably provided on the middle side wall of the clamping frame 111, and an elastic sheet 115 is connected between the clamping plate 112 and the side walls facing each other of the clamping frame 111, and a top support spring 116 is sleeved on the top support rod 114, and the two ends of the top support spring 116 are respectively fixedly connected to the end of the top support rod 114 and the side wall of the clamping frame 111.

[0051] When the steel bar to be welded is placed into the equipment, the operator presses the steel bar to be welded into the clamping part 11, and the steel bar to be welded pushes the clamping wheel 113 and enters between the clamping plates 112. The clamping plates 112 clamp the steel bar to be welded due to the elastic force of the spring sheet 115, and the supporting spring 116 on the supporting rod 114 supports the steel bar to be welded.

[0052] The remaining operations are the same as those in the first embodiment.

[0053] Embodiment 3: This embodiment is based on embodiment 1. In order to reduce the labor intensity of the operator during welding operations, the side walls of the vertical plate 1 are provided with legs (not shown in the figure). The legs are supported on the building floor, and the vertical plate 1 is supported next to the reserved steel bars. The operator only needs to hold the vertical plate 1 and the steel bars to be welded to perform welding operations.

[0054] The present invention and its implementation modes are described above. Such description is not restrictive. What is shown in the drawings is only one of the implementation modes of the present invention. The actual structure is not limited thereto.

Claims

1. A welding device for building steel bars, comprising a vertical plate (1) and a slide (2), wherein the slide (2) is fixedly arranged on a side wall of the vertical plate (1), characterized in that: A limit plate (3) is vertically slidably clamped on the slide (2), a gripping unit (4) is provided on the side wall of the vertical plate (1), a welding unit (5) is vertically slidably clamped on the slide (2), the welding unit (5) is located below the limit plate (3), two side walls of the vertical plate (1) facing each other are mirror-symmetrically provided with guide grooves (12), the welding unit (5) comprises a welding box (51), a welding gun (52) and a connecting rod (53), the welding box (51) is vertically slidably clamped on the slide (2), the welding gun (52) is symmetrically distributed, slides and rotates through the welding box (51), the connecting rod (53) is arranged at one end of the welding gun (52) close to the vertical plate (1), and the connecting rod (53) and the welding gun (52) are horizontally connected. The connecting rod (53) is coaxially rotatably connected, and the end of the connecting rod (53) is movably embedded in the guide groove (12). The gripping unit (4) comprises a gripping bracket (41), an elastic traction member (42), an upper hook plate (43) and a lower hook plate (44). The gripping bracket (41) is fixedly arranged on the side wall of the vertical plate (1), and the elastic traction member (42) is slidably penetrated through the side wall of the gripping bracket (41). The upper hook plate (43) is horizontally slidably arranged on the limit plate (3), and the lower hook plate (44) is horizontally slidably arranged on the lower edge of the side wall of the slide (2). The lower hook plate (44) is fixedly connected to the elastic traction member (42), and the upper hook plate (43) is slidably engaged with the elastic traction member (42).

2. A welding device for building steel bars according to claim 1, characterized in that: The guide groove (12) is formed by smoothly connecting a vertical groove (121) and an oblique groove (122); a guide button (531) is rotatably provided at the end of the connecting rod (53); the guide button (531) is movably arranged in the guide groove (12); an anti-rotation groove (532) is horizontally provided on the circumferential side wall of the connecting rod (53); two outer side walls opposite to each other of the welding box (51) are horizontally fixed with anti-rotation rods (511); the anti-rotation rods (511) extend along the axis direction of the connecting rod (53); the end of the anti-rotation rod (511) is movably inserted into the anti-rotation groove (532); a linkage groove (521) is provided on the circumferential side wall of the welding gun (52); the linkage groove (5 21) is formed by smoothly connecting a flat groove (5211) and a steering groove (5212); a steering guide rod (512) is fixedly provided on the inner wall of the welding box (51); the steering guide rod (512) is movably inserted into the linkage groove (521); a lifting motor (513) is fixedly provided on the side wall of the welding box (51); a lifting gear (514) is rotatably provided on the side wall of the welding box (51) close to the slide (2); the lifting motor (513) and the lifting gear (514) are transmission-connected; racks (21) are symmetrically distributed and fixedly provided on the inner side walls of the slide (2) facing each other; the lifting gear (514) is meshed with one of the racks (21).

3. A welding device for building steel bars according to claim 2, characterized in that: The welding box (51) is provided with a commutator (515), and the commutator (515) comprises a commutator cylinder (516) and a bidirectional pressure rod (517). The commutator cylinder (516) is vertically fixedly arranged in the welding box (51), and the upper and lower ends of the commutator cylinder (516) respectively penetrate the upper and lower walls of the welding box (51), and the bidirectional pressure rod (517) is vertically slidably arranged on the inner wall of the commutator cylinder (516). The length of the bidirectional pressure rod (517) is greater than the length of the commutator cylinder (516), and elastic electric sheets (5171) are respectively fixedly arranged on two opposite side walls of the bidirectional pressure rod (517). The commutator cylinder (516) is provided with a plurality of springs and a plurality of springs. ) are symmetrically provided with first card slots (5161) on the opposite side walls thereof, and second card slots (5162) are symmetrically provided on the opposite side walls thereof. The first card slot (5161) is arranged above the second card slot (5162), and the first card slot (5161) and the second card slot (5162) are respectively located on the movement path of the elastic electric sheet (5171), a first electric sheet (5163) is fixedly provided in the first card slot (5161), and a second electric sheet (5164) is fixedly provided in the second card slot (5162), and the elastic electric sheet (5171) and the lifting motor (513) are electrically connected.

4. A welding device for building steel bars according to claim 3, characterized in that: The limiting plate (3) is provided with a locking piece (32), the locking piece (32) is located between the two racks (21), and the locking piece (32) is engaged with the racks (21) in a natural state.

5. A welding device for building steel bars according to claim 1, characterized in that: A lower groove plate (23) is fixedly provided on the side wall of the lower end of the slide frame (2), and a first sliding groove (231) is horizontally opened on the side wall of the lower groove plate (23). The lower hook plate (44) is horizontally slidably provided on the side wall of the lower groove plate (23). An upper groove plate (33) is fixedly provided on the lower wall of the limit plate (3), and a second sliding groove (331) is horizontally opened on the side wall of the upper groove plate (33). The upper hook plate (43) is horizontally slidably provided on the side wall of the upper groove plate (33). The elastic traction member (42) comprises a traction rod (421), a pressing rod (422) and a lap rod (423). The traction rod (421) horizontally slides through the side wall of the gripping bracket (41). The pressing rod (422) is fixedly provided on one end of the traction rod (421), and the lap rod (423) is fixedly provided on the other end of the traction rod (421). A gripping spring (4211) is sleeved on the outside of the guide rod (421), and two ends of the gripping spring (4211) are respectively fixedly connected to the gripping bracket (41) and the side walls of the lap rod (423) facing each other. A longitudinal groove (4231) is provided on the side walls of the lap rod (423) close to the upper hook plate (43) and the lower hook plate (44). A lower lever (441) is fixedly provided on the side wall of the lower hook plate (44) close to the lap rod (423). The lower lever (441) passes through the first sliding groove (231) and is fixedly connected to the side wall of the lap rod (423). An upper lever (431) is fixedly provided on the side wall of the upper hook plate (43) close to the lap rod (423). The middle part of the upper lever (431) passes through the second sliding groove (331), and the end of the upper lever (431) is movably provided in the longitudinal groove (4231).

6. A welding device for building steel bars according to claim 1, characterized in that: A clamping piece (11) is fixedly provided on the upper portion of the side wall of the vertical plate (1) close to the sliding frame (2).

7. A welding device for building steel bars according to claim 1, characterized in that: A lower support plate (22) is provided at the lower end of the slide frame (2) for horizontal sliding movement, and a limiting groove (31) is provided on the side wall of the limiting plate (3).

Images