CN112222729A

CN112222729A - Welding tool and welding method

Info

Publication number: CN112222729A
Application number: CN202011218039.2A
Authority: CN
Inventors: 唐顺成
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-01-15

Abstract

The application discloses welding frock and welding method, this welding frock includes: a support member; the workpiece fixing piece is used for fixing a workpiece to be welded, and the lower end of the workpiece fixing piece is hinged with the first end of the supporting piece, so that the workpiece fixing piece can turn over around a hinged point and is positioned at a front side welding position or a back side welding position; the welding track, the front welding gun assembly and the back welding gun assembly are arranged on the welding track, and the front welding gun assembly and the back welding gun assembly are respectively used for welding the front side and the back side of a workpiece fixed on the workpiece fixing piece. The welding tool solves the problems that in the related art, a workpiece is easily welded through and the structure is complex and the use cost is high.

Description

Welding tool and welding method

Technical Field

The application relates to the field of welding equipment, in particular to a welding tool and a welding method.

Background

The existing welding technology is that a standard five-axis or six-axis robot is matched with two overturning platforms to weld the welding seams on the front and back of a frame, a workpiece is horizontally placed in the welding process, a welding gun of a welding robot is used for welding along the surface of the workpiece, the welding robot is easy to weld through in the welding process for a thin workpiece, the square welding of the workpiece in the related technology adopts concentric axis rotation, the rotating structure is high in use cost and complex in structure, the welding method in the related technology needs to perform point calibration on the surface A of the workpiece once, and can perform point calibration on the surface B again, so that the point calibration time is too long, and the process is complex.

Aiming at the problems that a welding tool in the related art easily causes the workpiece to be welded through and the structure is complex and the use cost is high, an effective solution is not provided at present.

Disclosure of Invention

The main objective of this application provides a welding frock to welding frock among the solution correlation technique easily leads to the work piece to be welded through and the complicated use cost high problem of structure.

In order to realize the above-mentioned purpose, this application provides a welding frock, and this welding frock includes: a support member; the workpiece fixing piece is used for fixing a workpiece to be welded, and the lower end of the workpiece fixing piece is hinged with the first end of the supporting piece, so that the workpiece fixing piece can turn over around a hinged point and is positioned at a front side welding position or a back side welding position; the welding track, the front welding gun assembly and the back welding gun assembly are arranged on the welding track, and the front welding gun assembly and the back welding gun assembly are respectively used for welding the front side and the back side of a workpiece fixed on the workpiece fixing piece.

Furthermore, the second end of the supporting piece is hinged with a telescopic mechanism, and the output end of the telescopic mechanism is hinged with the workpiece fixing piece.

Furthermore, the telescopic mechanism is arranged as an air cylinder, and a piston rod of the air cylinder is hinged with the back of the workpiece fixing piece.

Further, the welding rail includes: the front welding track and the back welding track are symmetrically arranged; the front welding gun assembly is arranged on the front welding track and can move along the front welding track so as to weld the front of the workpiece; and the reverse welding gun assembly is arranged on the reverse welding track and can move along the reverse welding track so as to weld the reverse side of the workpiece.

Furthermore, the front welding track and the back welding track are obliquely arranged to form a V-shaped structure.

Furthermore, the front welding track and the back welding track are respectively arranged to be two opposite tracks; the front welding gun assemblies are arranged in two and are arranged on the front welding track one by one; the two reverse welding gun assemblies are arranged on the reverse welding track one by one;

the welding frock still includes: the PLC control device is electrically connected with the front welding track, the back welding track, the front welding gun assembly and the back welding gun assembly.

Further, the front welding track and the back welding track are the same in structure and both comprise: the welding gun guide rods are arranged on two sides of the welding gun lead screw component; the positive welding gun subassembly with reverse side welding gun subassembly structure is the same, all includes: the welding gun sliding table is fixedly arranged on the sliding part of the welding gun lead screw assembly and sleeved on the welding gun guide rod; the welding gun support is fixedly arranged on the welding gun sliding table; the welding gun upper and lower cylinders are fixedly arranged on the welding gun support; the welding gun position cross adjusting mechanism is fixedly arranged at the output ends of the upper cylinder and the lower cylinder of the welding gun; the welding gun clamping block is fixedly arranged on the welding gun position cross-shaped adjusting mechanism; and the welding gun is fixedly arranged on the welding gun clamping block.

Furthermore, two strip-shaped mounting holes are formed in the welding gun support, the two strip-shaped mounting holes are distributed in the left and right directions, and the welding gun upper cylinder and the welding gun lower cylinder are fixed in one strip-shaped mounting hole.

The welding gun is characterized by further comprising a welding gun walking track support, wherein the front welding track and the back welding track are fixedly arranged on the welding gun walking track support.

Further, the workpiece fixing member includes: the lower end of the fixing frame is hinged with the first end of the supporting piece; the first workpiece pressing mechanism is arranged on the fixing frame and used for fixing the left side of the workpiece; the second workpiece pressing mechanism is arranged on the fixing frame and used for fixing the right side of the workpiece; and the third workpiece pressing mechanism is arranged on the fixed frame and used for fixing the upper side of the workpiece.

Further, the first workpiece pressing mechanism includes: the two ends of the first bottom pipe are fixedly connected with the two ends of the fixing frame; the first sleeve pieces are arranged in a plurality and are sequentially sleeved on the first bottom pipe; the first clamping plate is arranged on the first sleeve piece, and the end part of the first clamping plate is used for clamping a workpiece; and the positioning bolt is sequentially in threaded connection with the first sleeve, the first clamping plate and the first bottom pipe.

Further, the second workpiece pressing mechanism includes: the two ends of the second bottom pipe are fixedly connected with the two ends of the fixing frame; the second sleeve is sleeved on the second bottom pipe; the first pressing cylinder is fixedly arranged on the second sleeve; the second clamping plate is fixedly arranged at the output end of the first pressing cylinder, and the end part of the second clamping plate is used for clamping a workpiece; the second sleeve is sleeved in the middle of the second bottom pipe.

Further, the second workpiece pressing mechanism further includes: locate the third external member at second bottom tube both ends, third external member upper end is run through and is provided with the fagging that is L shape, has set firmly the second on the third external member and has compressed tightly the cylinder, the output that the second compressed tightly the cylinder articulates there is first connecting rod, the end of first connecting rod articulates there is the first briquetting that is used for compressing tightly the work piece, the lower extreme of first briquetting articulates there is the pole setting, pole setting lower extreme and fagging fixed connection.

Further, the third pressing mechanism includes: two ends of the third bottom pipe are fixedly connected with two ends of the fixing frame, and the third bottom pipe is positioned between the first bottom pipe and the second bottom pipe; the fourth sleeve is sleeved on the third bottom pipe, and the upper end of the fourth sleeve is provided with a groove for placing a workpiece; the mounting plate is longitudinally and fixedly arranged at the lower end of the fourth sleeve; the third compresses tightly the cylinder, the lower extreme with the mounting panel is articulated, and it has the second connecting rod to articulate the upper end, the second connecting rod is kept away from the upper end that the third compressed tightly cylinder one side articulates there is the third connecting rod, and the lower extreme is articulated with fourth external member side, the terminal articulated second briquetting that is used for compressing tightly the work piece that has of third connecting rod, the lower extreme of second briquetting with the articulated of side of fourth external member.

Furthermore, the first pressing block is arranged in a triangular shape, and one bevel edge of the first pressing block is used for pressing the workpiece; the second pressing block is arranged in a triangular shape, and one bevel edge of the second pressing block is used for pressing the workpiece.

Furthermore, the third sleeve sets up to two sets of and be the symmetric distribution, the fourth suit sets up to a plurality ofly and distributes along third sleeve length direction.

Furthermore, at least two groups of workpiece fixing pieces and at least two telescopic mechanisms are arranged on the supporting piece, wherein one telescopic mechanism corresponds to one workpiece fixing piece; the lower end of the supporting piece is provided with an in-out rail, and the supporting piece can move along the in-out rail so that the two groups of workpiece fixing pieces sequentially enter the welding station.

Further, the business turn over track includes the track backup pad and locates the support piece guide bar of track backup pad upper end, the support piece guide bar set up to two and with support piece's both ends correspond, the cover is equipped with the slider on the support piece guide bar, support piece fixes on the slider.

Further, the support part further comprises a driving mechanism for driving the support part to move along the in-out rail.

According to another aspect of the application, a welding method is provided for welding a guardrail workpiece, and the problems that in a welding method in the related art, the A surface of the workpiece needs to be calibrated once, and the B surface needs to be calibrated once again, so that the calibration time is too long, and the process is complex are solved, and the welding method comprises the following steps:

(1) positioning the workpiece fixing piece at the front welding position, setting a zero point of the front welding gun assembly and a zero point of the back welding gun assembly, and making the zero points of the front welding gun assembly and the back welding gun assembly symmetrical;

(2) obtaining information of a workpiece to be welded to obtain a welding track of the workpiece to be welded, wherein the welding track comprises a welding starting point and an end point of each section of welding line;

(3) controlling the welding track to move the front welding gun assembly to a zero point;

(4) adjusting the position of the workpiece to be welded on the workpiece fixing piece to enable the welding starting points of all sections of the workpiece to be welded to correspond to the welding starting points of all sections of the front welding gun assembly on the welding track one by one;

(5) controlling the welding track to move the front welding gun assembly to a zero point, and performing welding simulation along the welding track;

(6) controlling the welding track to move the front welding gun assembly to a zero point, and carrying out front welding along the welding track;

(7) turning the workpiece fixing piece to a reverse side welding position;

(8) and controlling the reverse welding track to move the reverse welding gun assembly to a zero point, and performing reverse welding along the welding track.

In the embodiment of the application, the support is arranged; the workpiece fixing piece is used for fixing a workpiece to be welded, and the lower end of the workpiece fixing piece is hinged with the first end of the supporting piece, so that the workpiece fixing piece can turn over around a hinged point and is positioned at a front side welding position or a back side welding position; the welding track and the welding gun assembly arranged on the welding track are used for welding the front side and the back side of the workpiece fixed on the workpiece fixing piece, so that the technical effects of improving welding quality, preventing the workpiece from being welded through and simplifying a tool structure are achieved, and the problems that the workpiece is easily welded through and the structure is complex and the use cost is high due to the welding tool in the related technology are solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic diagram of an axial structure according to an embodiment of the present application;

FIG. 2 is a schematic diagram of another axial structure according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a workpiece mount according to an embodiment of the present application;

FIG. 4 is an enlarged schematic view of a portion A of FIG. 3;

FIG. 5 is an enlarged schematic view of a portion B of FIG. 3;

FIG. 6 is a schematic structural diagram of a second sleeve according to an embodiment of the present application;

FIG. 7 is a schematic structural view of a front side weld gun assembly according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a fourth kit according to an embodiment of the present application;

FIG. 9 is a schematic structural view of a front side weld rail according to an embodiment of the present application;

wherein, 1 welding gun walking track support, 2 workpiece fixing parts, 21 fixing frame, 3 reverse welding track, 4 reverse welding gun component, 5 front welding track, 51 welding gun guide rod, 52 welding gun screw rod component, 6 front welding gun component, 61 welding gun sliding table, 62 welding gun support, 63 strip-shaped mounting hole, 64 welding gun up-down cylinder, 65 welding gun position cross adjusting mechanism, 66 welding gun clamping block, 67 welding gun, 7 second workpiece pressing mechanism, 701 second bottom tube, 702 second external member, 703 first pressing cylinder, 704 second clamping plate, 705 third external member, 706 second pressing cylinder, 707 supporting plate, 708 vertical rod, 709 first pressing block, 710 first connecting rod, 8 workpieces, 9 first workpiece pressing mechanism, 901 first bottom tube, 902 first clamping plate, 902a upper plate, 902b vertical plate, c, 903 first external member, 10 third workpiece pressing mechanism, 10a fourth external member, 10b third pressing cylinder, 101, a third bottom tube, 11 sliding blocks, 12 telescopic mechanisms, 13 supporting pieces, 14 supporting piece guide rods, 15 supporting plates, 16 rotating shafts, 17 lug seats, 18 fixing bolts, 19 limiting plates, 20 pressure grooves, 21 pressure plates, 22 adjusting plates, 23 sliding holes, 24 mounting plates, 25 adjusting bolts, 26 connecting plates, 27 second connecting rods, 28 third connecting rods, 29 second pressure blocks and 30 grooves.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.

In this application, the terms "upper", "lower", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "disposed," "provided," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 9, an embodiment of the present application provides a welding tool, including: a support member; the workpiece fixing piece is used for fixing a workpiece to be welded, and the lower end of the workpiece fixing piece is hinged with the first end of the supporting piece, so that the workpiece fixing piece can turn over around a hinged point and is positioned at a front side welding position or a back side welding position; and the welding track, the front welding gun assembly 6 and the back welding gun assembly 4 are arranged on the welding track, and the front welding gun assembly 6 and the back welding gun assembly 4 are respectively used for welding the front and the back of a workpiece 8 fixed on the workpiece fixing piece 2.

In this embodiment, the supporting member 13 is used to support the workpiece fixing member 2, the workpiece 8 is fixed on the workpiece fixing member 2, the lower end of the workpiece fixing member 2 is hinged to the supporting member 13, so that the workpiece fixing member 2 can be turned around the hinge point to swing the workpiece fixing member 2 leftwards and rightwards, thereby realizing that the workpiece 8 on the workpiece fixing member 2 is in an inclined or vertical state, when the workpiece fixing member 2 is in a left-side inclined position, the front side thereof is located above, i.e. in a front side welding position, at this time, the front side of the workpiece 8 can be welded by the welding gun assembly, when the workpiece fixing member 2 is in a right-side inclined position, the back side thereof is located above, i.e. in a back side welding position, at this time, the back side of the workpiece 8 can be welded by the welding gun assembly, thereby the welding of the front side and the back side, can avoid wearing 8 of work pieces welding, improve welding quality to the welding of 8 fronts and reverse sides of work pieces in this embodiment adopts work piece mounting 2 to realize around the mode of the pin joint left and right sides upset of lower extreme, adopts the mode of concentric shaft pivoted for the tradition, has realized the technological effect of simplifying the frock structure, and then has solved the welding frock among the correlation technique and has easily leaded to 8 of work pieces to be worn and the complicated use cost high problem of structure.

As shown in fig. 1 to 9, a second end of the supporting member 13 is hinged to a telescopic mechanism 12, an output end of the telescopic mechanism 12 is hinged to the workpiece fixing member 2, the telescopic mechanism 12 is configured as an air cylinder, and a piston rod of the air cylinder is hinged to the back surface of the workpiece fixing member 2.

The workpiece fixing piece 2 is overturned around the hinged point through the telescopic mechanism 12, the telescopic mechanism 12 can adopt telescopic structures such as air cylinders or hydraulic cylinders, and the length of the piston rod can be changed to realize the left-right overturning of the workpiece fixing piece 2.

As shown in fig. 1 to 9, the welding rail includes: the front welding track 5 and the back welding track 3 are symmetrically arranged; the front welding gun assembly 6 is arranged on the front welding track 5 and can move along the front welding track 5 to weld the front of the workpiece 8; and the reverse welding gun assembly 4 is arranged on the reverse welding track 3 and can move along the reverse welding track 3 so as to weld the reverse side of the workpiece 8.

Specifically, it should be noted that the front welding track 5 and the back welding track 3 are respectively used for the front welding gun assembly 6 and the back welding gun assembly 4 to move, the front welding of the workpiece 8 is realized in the moving process of the front welding gun assembly 6 on the front welding track 5, the back welding of the workpiece 8 is realized by the back welding gun assembly 4 in the same way, and the front welding track 5 and the back welding track 3 are respectively the same as the left inclined position and the right inclined position of the workpiece fixing member 2, so that the inclined welding of the workpiece 8 is realized, and the welding quality of the workpiece 8 is ensured.

As shown in fig. 1 to 9, the obverse-side welding rail 5 and the reverse-side welding rail 3 are each provided as two opposing rails, respectively; the front welding gun assemblies 6 are arranged in two and are arranged on the front welding track 5 one by one; the reverse welding gun assemblies 4 are arranged in two and are arranged on the reverse welding track 3 one by one. The welding frock still includes: still include PLC controlling means, PLC controlling means and openly weld track 5, reverse side welding track 3, openly welder subassembly 6, reverse side welder subassembly 4 electric connection.

Specifically, it should be noted that, because both sides of the same side of the workpiece 8 need to be welded, in order to improve the welding efficiency, the front welding gun assembly 6 and the back welding gun assembly 4 are both provided with two parts, so that the front welding gun assembly 6 and the back welding gun assembly 4 can weld both sides of the workpiece 8 simultaneously in the process of welding the same side, thereby effectively improving the welding efficiency, and the accurate control of the displacement of the front welding gun assembly 6 and the back welding gun assembly 4 can be realized through the PLC control device.

As shown in fig. 1 to 9, the front welding rail 5 and the back welding rail 3 have the same structure, and each of them includes: a welding gun lead screw component 52 and welding gun guide rods 51 arranged at two sides of the welding gun lead screw component 52; the front welding gun assembly 6 and the back welding gun assembly 4 have the same structure and respectively comprise: the welding gun sliding table 61 is fixedly arranged on the sliding part of the welding gun lead screw component 52 and is sleeved on the welding gun guide rod 51; the welding gun support 62 is fixedly arranged on the welding gun sliding table 61; the welding gun upper and lower air cylinders 64 are fixedly arranged on the welding gun support 62; the welding gun position cross adjusting mechanism 65 is fixedly arranged at the output end of the welding gun upper and lower air cylinders 64; the welding gun clamping block 66 is fixedly arranged on the welding gun position cross adjusting mechanism 65; and the welding gun 67 is fixedly arranged on the welding gun clamping block 66.

Specifically, it should be noted that the welding gun guide rod 51 is used for guiding the welding gun sliding table 61 in the moving process, in order to improve the stability of the moving process, two guide rods are provided, the welding gun lead screw assembly 52 is used for driving the welding gun sliding table 61 to linearly move, the welding gun lead screw assembly 52 can adopt a lead screw structure in the related art and jointly form a sliding part through a motor, a lead screw nut and a sliding part, so as to realize the accurate control of the displacement of the welding gun sliding table 61, the welding gun 67 is fixed on the welding gun sliding table 61 through a welding gun clamping block 66, a welding gun position cross adjusting mechanism 65 and a welding gun up-and-down cylinder 64, so as to slide along with the welding gun sliding table 61, so as to realize the welding of the workpiece 8, the welding gun 67 can be stably fixed through the welding gun clamping block 66, the welding gun position cross adjusting mechanism 65 is mainly used for adjusting the positions of the welding gun 67 in, the welding gun up-and-down cylinder 64 can adjust the height of the welding gun 67, so that the position of the welding gun 67 in three dimensions can be adjusted to adapt to different welding requirements.

As shown in fig. 1 to 9, two strip-shaped mounting holes 63 are formed in the welding gun support 62, the two strip-shaped mounting holes 63 are distributed in the left and right direction, the welding gun upper and lower cylinders 64 are fixed in one of the strip-shaped mounting holes 63, the welding gun upper and lower cylinders 64 are fixed by selecting one of the strip-shaped mounting holes 63, the left and right positions of the welding gun 67 are adjusted, and the welding flexibility is further improved.

Still include welder walking track support 1, openly weld the track 5 and reverse side welding track 3 all sets firmly on welder walking track support 1. The welding gun walking track support 1 is used for installing the front welding track 5 and the back welding track 3 and plays a role in supporting the front welding track 5, the back welding track 3, the front welding gun assembly 6 and the back welding gun assembly 4.

As shown in fig. 1 to 9, the workpiece fixing member 2 includes: a fixed frame 21, the lower end of which is hinged with the first end of the support piece 13; the first workpiece pressing mechanism 9 is arranged on the fixing frame 21 and used for fixing the left side of the workpiece 8; the second workpiece pressing mechanism 7 is arranged on the fixing frame 21 and used for fixing the right side of the workpiece 8; and a third workpiece 8 pressing mechanism provided on the fixing frame 21 and fixing the upper side of the workpiece 8.

Specifically, it should be noted that the fixed frame 21 can be in a square shape, the first end of the support member 13 is provided with the ear seat 17, the lower end of the fixed frame 21 is provided with a connecting member, the connecting member is hinged to the ear seat 17 through the rotating shaft 16, so that the support member 13 can be turned around the axis of the rotating shaft 16, the first workpiece pressing mechanism 9, the second workpiece pressing mechanism 7 and the third workpiece pressing mechanism 8 respectively fix different positions of the workpieces 8, thereby realizing the stable pressing of the workpieces 8 and ensuring the accuracy of the subsequent welding process.

As shown in fig. 1 to 9, the first workpiece pressing mechanism 9 includes: a first bottom tube 901, both ends of which are fixedly connected with both ends of the fixing frame 21; a plurality of first sleeve members 903 which are sequentially sleeved on the first bottom pipe 901; a first clamping plate 902, which is arranged on the first sleeve 903, wherein the end part of the first clamping plate 902 is used for clamping the workpiece 8; and the positioning bolt is in threaded connection with the first sleeve 903, the first clamping plate 902 and the first bottom pipe 901 in sequence.

The first bottom pipe 901 is arranged in a long strip shape and fixed on the fixing frame 21, the first sleeve 903 is sleeved on the first bottom pipe 901 in a sliding manner, so that the position of the first sleeve 903 can be adjusted, the first clamping plate 902 is arranged to penetrate through the upper end of the side wall of the first sleeve 903 in a sliding manner, the lower end of the first clamping plate 902 is connected with the upper surface of the first bottom pipe 901 in a sliding manner, one end, facing the workpiece 8, of the first clamping plate 902 is used for clamping the workpiece 8 and providing transverse clamping force for the workpiece 8, the positions of the first clamping plate 902 and the first sleeve 903 are fixed through positioning bolts, the position of the first sleeve 903 can be three, the three positions sequentially correspond to the upper part, the middle part and the lower part of the workpiece 8, the first clamping plate 902 comprises a lower plate 902c penetrating through the upper end of the first sleeve 903, a vertical plate 902b vertically fixed at the upper end of the lower plate 902c and an upper plate a slidably sleeved on, the space is used for accommodating the left side of the workpiece 8, the upper plate 902a and the vertical plate 902b are locked through the positioning bolts, and the space between the upper plate 902a and the lower plate 902c can be adjusted to adapt to workpieces 8 with different height sizes.

As shown in fig. 1 to 9, the second workpiece pressing mechanism 7 includes: a second bottom tube 701, both ends of which are fixedly connected with both ends of the fixing frame 21; the second sleeve 702 is sleeved on the second bottom pipe 701 in a sliding manner, and the position of the second sleeve 702 can be adjusted; the first pressing cylinder 703 is fixedly arranged on the second sleeve 702; the second clamping plate 704 is fixedly arranged at the output end of the first pressing cylinder 703, and the end part of the second clamping plate 704 is used for clamping the workpiece 8; the second sleeve 702 is sleeved on the middle portion of the second bottom tube 701.

The structure of the second bottom pipe 701 is the same as that of the first bottom pipe 901, the second sleeve 702 is mounted on the second bottom pipe 701 in the same manner as that of the first sleeve 903, the second clamping plate 704 is the same as that of the first clamping plate 902, the second clamping plate 704 slidably penetrates through the second sleeve 702, in order to facilitate connection of the first pressing cylinder 703 and the second clamping plate 704, a push plate can be vertically mounted at the upper end of the second clamping plate 704, the output end of the first pressing cylinder 703 is fixedly connected with the push plate, pushing of the second clamping plate 704 is achieved through action of the output end of the first pressing cylinder 703, so that the right side of the workpiece 8 is pressed and transverse pressing force is provided, the second sleeve 702 is fixed on the second bottom pipe 701 through positioning bolts, and the second clamping plate 704 comprises an upper plate 902a, a vertical plate b and a lower plate 902c which are the same as that of the first clamping plate 902 and are matched with the workpiece 8 with different heights.

As shown in fig. 1 to 9, the second workpiece pressing mechanism 7 further includes: the third sleeve 705 is arranged at two ends of the second bottom pipe 701, the upper end of the third sleeve 705 is provided with an L-shaped supporting plate 707 in a penetrating manner, the third sleeve 705 is fixedly provided with a second pressing cylinder 706, the output end of the second pressing cylinder 706 is hinged with a first connecting rod 710, the tail end of the first connecting rod 710 is hinged with a first pressing block 709 for pressing the workpiece 8, the lower end of the first pressing block 709 is hinged with a vertical rod 708, and the lower end of the vertical rod 708 is fixedly connected with the supporting plate 707.

Specifically, it should be noted that, the third sleeve 705 is slidably connected to two ends of the second bottom tube 701, so that the position can be adjusted conveniently, the workpiece 8 can be fixed by the positioning bolt, the horizontal portion of the support plate 707 passes through the third sleeve 705, the vertical portion is attached to the side surface of the workpiece 8, the second pressing cylinder 706 is fixed to the third sleeve 705, the first pressing block 709 is arranged in a triangular shape, a corner at the lower end of the first pressing block 709 is hinged to the vertical rod 708, and a corner at the right end is hinged to the first connecting rod 710, so that under the action of the second pressing cylinder 706, the first pressing block 709 is driven to rotate around the hinge point, so that the workpiece 8 is pressed by one of the bevel edges of the first pressing block 709, the third sleeve 705 is arranged in two shapes and is symmetrically distributed at two ends of the second bottom tube 701, so that the two ends of the workpiece 8 are stressed in a balanced.

As shown in fig. 1 to 9, the third pressing mechanism includes: two ends of the third bottom pipe 101 are fixedly connected with two ends of the fixing frame 21, and the third bottom pipe 101 is positioned between the first bottom pipe 901 and the second bottom pipe 701; the fourth sleeve 10a is sleeved on the third bottom pipe 101, and the upper end of the fourth sleeve 10a is provided with a groove 30 for placing the workpiece 8; the mounting plate 24 is longitudinally and fixedly arranged at the lower end of the fourth sleeve 10 a; the lower end of the third pressing cylinder 10b is hinged to the mounting plate 24, the upper end of the third pressing cylinder is hinged to a second connecting rod 27, the upper end, away from one side of the third pressing cylinder 10b, of the second connecting rod 27 is hinged to a third connecting rod 28, the lower end of the second connecting rod 27 is hinged to the side face of the fourth sleeve 10a, the tail end of the third connecting rod 28 is hinged to a second pressing block 29 used for pressing the workpiece 8, and the lower end of the second pressing block 29 is hinged to the side face of the fourth sleeve 10 a.

As shown in fig. 1 to 9, the fourth sleeve 10a is slidably sleeved on the third bottom tube 101, the second connecting rod 27 is of a triangular structure, the left corner of the second connecting rod 27 is hinged to the upper end of the third pressing cylinder 10b, the lower corner of the second connecting rod is hinged to the side surface of the fourth sleeve 10a, the upper corner of the second connecting rod is hinged to the left end of the third connecting rod 28, the right end of the third connecting rod 28 is hinged to the second pressing block 29, the second pressing block 29 is of a triangular structure, the lower corner and the upper corner of the second pressing block are hinged to the fourth sleeve 10a and the third connecting rod 28, the right corner of the second pressing block extends to the upper side of the groove 30, the connecting points between the second connecting rod 27, the third connecting rod 28, the second pressing block 29 and the fourth sleeve 10a are connected to form a parallelogram structure, the second connecting rod 27 is driven to rotate by the output end of the third pressing cylinder 10b, so that the third connecting rod 28 and the second pressing block, will be located on recess 30 the standpipe of work piece 8 and fix to realized that quick work piece 8 to being located on recess 30 presss from both sides tight fixed technological effect, because one of them hypotenuse of second briquetting 29 is used for compressing tightly work piece 8, consequently to not unidimensional work piece 8, the briquetting of triangle-shaped structure all can compress tightly fixedly, improves it and uses the flexibility, the third sleeve pipe sets up to two sets of and be the symmetric distribution, fourth sleeve pipe 10a sets up to a plurality ofly and distributes along third sleeve pipe length direction.

Specifically, it should be noted that the fourth kit 10a includes a U-shaped indent 20, the indent 20 is disposed in a through manner, a U-shaped limiting plate 19 is disposed on an end surface of the indent 20, and an upper end of the limiting plate 19 extends out of an upper end surface of the indent 20; the upper end of the pressure groove 20 is also fixedly provided with a pressure plate 21, and a groove 30 is formed between the pressure plate 21 and the limiting plate 19. The through groove 30 is used for fixing the external member on the supporting member, the limiting plate 19 can be welded on one end face of the pressing groove 20, the upper end of the limiting plate 19 extends out of the upper end face of the pressing groove 20, the distance between the limiting plate 19 and the pressing plate 21 forms the groove 30 used for mounting the workpiece 8, the fixing bolt 18 is connected to the pressing plate 21 in a penetrating mode through threads, and the pressing plate 21 can be used for fixing the external member on the supporting member.

The lower corner of the second connecting rod 27 is hinged with the side face of the pressing plate 21, the lower end of the second pressing block 29 is hinged with the side face of the pressing plate 21, so that the second connecting rod 27, the third connecting rod 28, the second pressing block 29 and the pressing plate 21 form a quadrilateral structure, the adjusting plate 22 is fixedly arranged on the outer side of the pressing groove 20, a sliding hole 23 is longitudinally formed in the adjusting plate 22, an adjusting bolt 25 is slidably connected in the sliding hole 23, and one end of the pressing plate 21 is fixedly connected with the adjusting bolt 25. Can unscrew adjusting bolt 25 after, slide clamp plate 21 from top to bottom makes adjusting bolt 25 slide in slide opening 23 to adjusting clamp plate 21's height is adjusted and is screwed up adjusting bolt 25 after suitable height and fix clamp plate 21, and for the stability after improving clamp plate 21 installation, bar mounting hole 63 sets up to two and along transverse distribution.

The output end of the third pressing cylinder 10b is fixedly provided with an L-shaped connecting plate 26, the horizontal part of the connecting plate 26 is connected with the output end of the third pressing cylinder 10b, the vertical part of the third pressing cylinder is hinged with the left corner of the first connecting rod 710, and the third pressing cylinder 10b has a certain thickness, so that the L-shaped connecting plate 26 is installed at the output end of the third pressing cylinder 10b for facilitating the transmission of the output end of the third pressing cylinder 10b and the first connecting rod 710.

In order to facilitate the adjustment of the positions of the first bottom tube 901, the second bottom tube 701 and the third bottom tube 101 on the fixing frame 21, a plurality of positioning holes may be formed at both ends of the fixing frame 21, the first bottom tube 901, the second bottom tube 701 and the third bottom tube 101 may be positioned at the holes and fixedly connected by bolts, or sliding grooves may be fixedly formed at both ends of the fixing frame 21, both ends of the first bottom tube 901, the second bottom tube 701 and the third bottom tube 101 are fixedly connected with the sliding grooves by bolts, and the bolts may move in the sliding grooves.

In the embodiment, the workpiece 8 is exemplified by a guardrail, the guardrail is composed of two transverse pipes and vertical pipes installed between the two transverse pipes, the vertical pipes are provided in a plurality of numbers, the first workpiece pressing mechanism 9 is used for pressing one of the transverse pipes, the second workpiece pressing mechanism 7 is used for pressing the other transverse pipe, the third workpiece 8 pressing mechanism is used for pressing the vertical pipes, each vertical pipe corresponds to two third sleeves 705, and one vertical pipe is pressed through two third pressing cylinders, because of the welding tooling in the related art, each tooling is clamped on a reverse platform by workers in the welding process, small errors can occur, the errors can cause the workpiece fixing part 2 to need to be re-calibrated and welded after being turned over, the welding time is prolonged, and in the embodiment, the workpiece 8 is automatically fixed through the first pressing cylinder, the second pressing cylinder 706 and the third pressing cylinder according to the design requirements, thereby eliminating the error of manual fixation and reducing the time required for welding.

In addition, in the related art, new tools need to be redesigned for workpieces 8 with different sizes, so that the production cycle and the production cost of products are improved.

As shown in fig. 1 to 9, at least two sets of workpiece fixing members 2 and at least two telescoping mechanisms 12 are disposed on the supporting member 13, wherein one telescoping mechanism 12 corresponds to one of the workpiece fixing members 2; the lower end of the supporting member 13 is provided with an in-out rail, and the supporting member 13 can move along the in-out rail, so that the two groups of workpiece fixing members 2 sequentially enter the welding station.

Specifically, it should be noted that, in order to improve the production efficiency, in this embodiment, two stations are disposed on the support member 13, that is, at least two telescopic mechanisms 12 and two workpiece fixing members 2 are installed, one telescopic mechanism 12 corresponds to one workpiece fixing member 2 and is used for driving the workpiece fixing member 2 to turn left and right, the support member 13 moves through the access track at the lower end, and here, the welding stations are the regions where the front welding gun assembly 6 and the back welding gun assembly 4 work, so as to achieve left-in middle welding, right-out, right-in middle welding and left-out, which greatly improves the work efficiency of the swing personnel.

As shown in fig. 1 to 9, the in-out rail includes a rail support plate 15 and a support member guide rod 14 disposed at an upper end of the rail support plate 15, the support member guide rods 14 are two and correspond to two ends of the support member 13, a slider 11 is sleeved on the support member guide rod 14, the support member 13 is fixed on the slider 11, and the in-out rail further includes a driving mechanism for driving the support member 13 to move along the in-out rail.

The support piece guide rod 14 is used for guiding the moving process of the support piece 13 and ensuring the stable moving of the support piece, the driving mechanism can adopt a linear driving mechanism in the related technology and utilizes a screw rod transmission mechanism, a gear rack mechanism and the like, in the embodiment, a gear rack structure is explained, a rack is arranged along the direction of the support piece guide rod 14 and can be fixed on the track supporting plate 15, the driving motor is fixed at the lower end of the support piece 13, a gear is sleeved at the output end of the driving motor and is meshed with the rack, and the driving motor drives the gear to rotate so as to provide thrust and drive the support piece 13 to move linearly.

According to another aspect of the present application, a welding method is provided for welding a guardrail workpiece 8, which solves the problems that in the welding method in the related art, the front side of the workpiece 8 needs to be calibrated once, and the back side needs to be calibrated once again, so that the calibration time is too long, and the process is complex, and the welding method comprises the following steps:

(1) when the front welding gun assembly 6 and the back welding gun assembly 4 comprise two, the two front welding gun assemblies 6 and the two back welding gun assemblies 4 are all located at corresponding zero positions, the zero positions of the two front welding gun assemblies 6 are symmetrical, and the back welding gun assemblies 4 are the same;

(2) acquiring information of a workpiece 8 to be welded, taking the guardrail workpiece 8 as an example, inputting the frame length, the width, the vertical pipe size and the number of vertical pipes of the workpiece 8 into a PLC (programmable logic controller) control device, and calculating the arrangement distance of each vertical pipe by a preset program to obtain a welding track of the workpiece 8 to be welded, wherein the welding track comprises a welding starting point and an end point of each section of welding line, namely the welding starting point and the end point of each vertical pipe;

(3) controlling the welding track to move the front welding gun assembly 6 to the zero point;

(4) adjusting the position of the workpiece 8 to be welded on the workpiece fixing member 2 to enable each welding start point of the workpiece 8 to be welded to correspond to each welding start point of the front welding gun assembly 6 on the welding track one by one, specifically, selecting the vertical tube 1, automatically adjusting the two front welding gun assemblies 6 to a preset zero point, manually adjusting the workpiece fixing member 2 according to the position of the output end of the front welding gun assembly 6 to enable the welding start point of the vertical tube 1 to correspond to the front welding gun assembly 6, then controlling the front welding gun assembly 6 to move to the welding start point of the second section of welding seam according to the preset welding track, continuously adjusting the workpiece fixing member 2 to enable the welding start point of the vertical tube 2 to correspond to the front welding gun assembly 6, and so on, completing the positioning of all vertical tubes on the workpiece fixing member 2, and compared with the positioning of the welding gun positions by adopting the position of the workpiece 8, the PLC is well arranged, and the workpiece 8 is positioned according to the position of the welding gun assembly, so that the positioning is more accurate and faster;

(5) controlling the welding track to move the front welding gun assembly 6 to a zero point, and performing welding simulation along a welding track;

(6) controlling the welding track to move the front welding gun assembly 6 to a zero point, and carrying out front welding along a welding track;

(7) the workpiece fixing piece 2 is turned over to the reverse side welding position;

(8) the reverse welding track 3 is controlled to enable the reverse welding gun assembly 4 to move to the zero point, reverse welding is carried out along the welding track, the zero point of the front welding gun assembly 6 is symmetrical to the zero point of the reverse welding gun assembly 4, and the front welding track 5 is symmetrical to the reverse welding track 3, so that point correction and simulation are carried out only when the workpiece 8 is located at the front welding position in the whole welding process, point correction and simulation do not need to be carried out repeatedly for the symmetrical reverse welding position, a large amount of time is saved, and welding efficiency is effectively improved.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The utility model provides a welding frock, its characterized in that includes:

a support member;

the workpiece fixing piece is used for fixing a workpiece to be welded, and the lower end of the workpiece fixing piece is hinged with the first end of the supporting piece, so that the workpiece fixing piece can turn over around a hinged point and is positioned at a front side welding position or a back side welding position; and the number of the first and second groups,

the welding track, locate welding track last positive welder subassembly and the reverse side welder subassembly, positive welder subassembly with the reverse side welder subassembly is used for respectively welding the front and the reverse side of fixing the work piece on the work piece mounting.

2. The welding tool of claim 1, wherein the second end of the support member is hinged to a telescoping mechanism, and an output end of the telescoping mechanism is hinged to the workpiece fixing member.

3. The welding tool of claim 2, wherein the welding track comprises: the front welding track and the back welding track are symmetrically arranged;

the front welding gun assembly is arranged on the front welding track and can move along the front welding track so as to weld the front of the workpiece;

the reverse side welding gun assembly is arranged on the reverse side welding track and can move along the reverse side welding track so as to weld the reverse side of the workpiece.

4. The welding tool according to claim 3, wherein the front welding rail and the back welding rail are respectively arranged to be two opposite;

the front welding gun assemblies are arranged in two and are arranged on the front welding track one by one;

the two reverse welding gun assemblies are arranged on the reverse welding track one by one;

5. The welding tooling of claim 4, wherein the front welding rails and the back welding rails have the same structure and both comprise: the welding gun guide rods are arranged on two sides of the welding gun lead screw component;

the positive welding gun subassembly with reverse side welding gun subassembly structure is the same, all includes:

the welding gun sliding table is fixedly arranged on the sliding part of the welding gun lead screw assembly and sleeved on the welding gun guide rod;

the welding gun support is fixedly arranged on the welding gun sliding table;

the welding gun upper and lower cylinders are fixedly arranged on the welding gun support;

the welding gun position cross adjusting mechanism is fixedly arranged at the output ends of the upper cylinder and the lower cylinder of the welding gun;

the welding gun clamping block is fixedly arranged on the welding gun position cross-shaped adjusting mechanism;

and the welding gun is fixedly arranged on the welding gun clamping block.

6. The welding tooling of any one of claims 2 to 5, wherein the workpiece fixture comprises:

the lower end of the fixing frame is hinged with the first end of the supporting piece;

the first workpiece pressing mechanism is arranged on the fixing frame and used for fixing the left side of the workpiece;

the second workpiece pressing mechanism is arranged on the fixing frame and used for fixing the right side of the workpiece;

and the third workpiece pressing mechanism is arranged on the fixed frame and used for fixing the upper side of the workpiece.

7. The welding tool of claim 6, wherein the first workpiece pressing mechanism comprises:

the two ends of the first bottom pipe are fixedly connected with the two ends of the fixing frame;

the first sleeve pieces are arranged in a plurality and are sequentially sleeved on the first bottom pipe;

the first clamping plate is arranged on the first sleeve piece, and the end part of the first clamping plate is used for clamping a workpiece.

8. The welding tooling of claim 6, wherein the second workpiece hold-down mechanism comprises:

the two ends of the second bottom pipe are fixedly connected with the two ends of the fixing frame;

the second sleeve is sleeved on the second bottom pipe;

the first pressing cylinder is fixedly arranged on the second sleeve;

and the second clamping plate is fixedly arranged at the output end of the first pressing cylinder, and the end part of the second clamping plate is used for clamping a workpiece.

9. The welding tooling of claim 6, wherein the second workpiece hold-down mechanism further comprises: locate the third external member at second bottom tube both ends, third external member upper end is run through and is provided with the fagging that is L shape, has set firmly the second on the third external member and has compressed tightly the cylinder, the output that the second compressed tightly the cylinder articulates there is first connecting rod, the end of first connecting rod articulates there is the first briquetting that is used for compressing tightly the work piece, the lower extreme of first briquetting articulates there is the pole setting, pole setting lower extreme and fagging fixed connection.

10. The welding tooling of claim 9, wherein the third hold-down mechanism comprises:

two ends of the third bottom pipe are fixedly connected with two ends of the fixing frame, and the third bottom pipe is positioned between the first bottom pipe and the second bottom pipe;

the fourth sleeve is sleeved on the third bottom pipe, and the upper end of the fourth sleeve is provided with a groove for placing a workpiece;

the mounting plate is longitudinally and fixedly arranged at the lower end of the fourth sleeve;

the third compresses tightly the cylinder, the lower extreme with the mounting panel is articulated, and it has the second connecting rod to articulate the upper end, the second connecting rod is kept away from the upper end that the third compressed tightly cylinder one side articulates there is the third connecting rod, and the lower extreme is articulated with fourth external member side, the terminal articulated second briquetting that is used for compressing tightly the work piece that has of third connecting rod, the lower extreme of second briquetting with the articulated of side of fourth external member.

11. The welding tool of claim 10, wherein the first pressing block is arranged in a triangular shape, and one of the oblique sides of the first pressing block is used for pressing the workpiece;

the second pressing block is arranged in a triangular shape, and one bevel edge of the second pressing block is used for pressing the workpiece.

12. The welding tool according to claim 2, wherein at least two groups of workpiece fixing members and at least two telescoping mechanisms are arranged on the supporting member, wherein one telescoping mechanism corresponds to one of the workpiece fixing members;

the lower end of the supporting piece is provided with an in-out rail, and the supporting piece can move along the in-out rail so that the two groups of workpiece fixing pieces sequentially enter the welding station.

13. The welding tool according to claim 12, wherein the in-out rail comprises a rail support plate and two support piece guide rods arranged at the upper end of the rail support plate, the two support piece guide rods correspond to the two ends of each support piece, a sliding block is sleeved on each support piece guide rod, and each support piece is fixed on the corresponding sliding block;

the welding tool further comprises a driving mechanism for driving the supporting piece to move along the in-out track.

14. A welding method, comprising the steps of:

(7) turning the workpiece fixing piece to a reverse side welding position;