Welding fixture

Abstract

The present invention discloses a welding fixture, which comprises: a frame; a first fixing clamp, which can be rotatably arranged on the frame, and is used to fix a tubular workpiece; and a second fixing clamp, which is arranged on the frame and is arranged opposite to the first fixing clamp, and can move closer to or away from the first fixing clamp, and is used to fix an end piece; when the second fixing clamp moves closer to the first fixing clamp so that the end piece abuts against the end of the tubular workpiece, the first fixing clamp drives the second fixing clamp to rotate relative to the frame. The technical solution of the present invention aims to improve the accuracy and efficiency of fixing the tubular workpiece and the end piece before welding.

Description

Technical Field

[0001] The invention relates to the technical field of welding processing, and in particular to a welding fixing jig. Background Art

[0002] The metal tube has a hollow structure inside. It has the characteristics of high strength, light weight, and beautiful appearance. It is widely used in life, such as door handles, window handles, fences, etc. However, an end piece needs to be welded to the end of these workpieces to seal the hollow structure of the metal tube, making it convenient to use and ensuring the appearance of the workpiece. In the related art, there is no special fixture to fix the metal tube and the end piece, but manual pre-fixation is required. This fixing method is prone to inaccurate alignment of the end piece and the metal tube, affecting the welding quality of the workpiece, and this manual fixing method also has the problem of low fixing efficiency.

[0003] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Summary of the invention

[0004] The main purpose of the present invention is to provide a welding fixture, aiming to improve the fixing accuracy and fixing efficiency of a tubular workpiece and an end piece before welding.

[0005] To achieve the above object, the present invention provides a welding fixture, comprising:

[0006] frame;

[0007] A first fixing clamp, the first fixing clamp is rotatably disposed on the frame, and the first fixing clamp is used to fix a tubular workpiece; and

[0008] a second fixing clip, the second fixing clip being arranged on the frame and being arranged opposite to the first fixing clip, the second fixing clip being movable towards or away from the first fixing clip, and being used for fixing the end piece;

[0009] When the second fixing clamp moves close to the first fixing clamp so that the end piece abuts against the end of the tubular workpiece, the first fixing clamp drives the second fixing clamp to rotate relative to the frame.

[0010] In one embodiment of the present invention, the welding fixture further includes a first driving assembly, the first driving assembly is fixed to the frame, and the first driving assembly is transmission-connected to the first fixing clamp to drive the first fixing clamp to rotate relative to the frame.

[0011] In one embodiment of the present invention, the first driving component comprises:

[0012] a first driving member, the first driving member being fixed to the frame;

[0013] A synchronous wheel, the synchronous wheel comprising a driving wheel, a driven wheel and a synchronous belt, the driving wheel is drivingly connected to the output end of the first driving member, and the driven wheel is drivingly connected to the driving wheel through the synchronous belt; and

[0014] A first rotating shaft, wherein the first rotating shaft can be rotatably fixed to the frame, one end of the first rotating shaft is drivingly connected to the driven wheel, and the other end is fixedly connected to the first fixing clamp.

[0015] In one embodiment of the present invention, the first fixing clip comprises:

[0016] A first fixing clamp body, one side of which is fixedly connected to the first rotating shaft; and

[0017] A pressing plate is movably connected to the first fixing clamp body, and the pressing plate and the first fixing clamp body clamp and fix the tubular workpiece.

[0018] In one embodiment of the present invention, the first fixing clamp further includes a third driving member, the third driving member is fixedly connected to the first fixing clamp body, the output end of the third driving member is fixedly connected to the pressure plate, and the third driving member drives the pressure plate to move closer to or away from the first fixing clamp body.

[0019] In one embodiment of the present invention, the welding fixture further includes a second driving assembly, the second driving assembly includes a second driving member and a fixing frame, the second driving member is fixedly connected to the frame, the fixing frame is fixedly connected to the output end of the second driving member, and the second fixing clamp is rotatably disposed on the fixing frame;

[0020] The second driving member drives the fixing frame to slide relative to the frame, so that the second fixing clamp approaches or moves away from the first fixing clamp.

[0021] In one embodiment of the present invention, the fixed frame is provided with a first rotating shaft hole, the second fixing clamp includes a second rotating shaft and an adsorption device, the second rotating shaft can be rotatably passed through the first rotating shaft hole, the end face of the second rotating shaft is provided with an air suction hole passing through the second rotating shaft, the adsorption device is fixed to one end of the second rotating shaft away from the first fixing clamp, and the adsorption device adsorbs the end piece to one end of the second rotating shaft close to the first fixing clamp through the air suction hole.

[0022] In one embodiment of the present invention, the fixing frame also includes a rotating shaft fixing seat and a bearing, the rotating shaft fixing seat is fixedly connected to the fixing frame, the rotating shaft fixing seat is provided with a second rotating shaft hole, the central axis of the second rotating shaft hole coincides with the central axis of the first rotating shaft hole, an accommodating cavity is formed inside the rotating shaft fixing seat, and the bearing is sleeved on the surface of the second rotating shaft and fixed in the accommodating cavity.

[0023] In one embodiment of the present invention, the welding fixture also includes a positioning assembly, the positioning assembly includes a positioning plate and a fourth driving member, the fourth driving member is fixedly connected to the fixing frame, the positioning plate is fixedly connected to the output end of the fourth driving member, the positioning plate is provided with a through hole and a positioning portion, the positioning portion is arranged toward the first fixing clamp, the second rotating shaft is passed through the through hole, and the fourth driving member drives the positioning plate to move in a direction away from the first fixing clamp so that the end piece abuts against the positioning portion to correct the position of the end piece.

[0024] In one embodiment of the present invention, the positioning portion is provided with a positioning groove, the bottom wall of the positioning groove is provided with the through hole, and the end piece abuts against the groove wall of the positioning groove to correct the position of the end piece.

[0025] The welding fixture in the technical solution of the present invention is provided with a first fixing clamp for fixing the tubular workpiece and a second fixing clamp for fixing the end piece on the frame, and the second fixing clamp can also be arranged close to or away from the first fixing clamp, so that the end piece can be moved to a position abutting against the end of the tubular workpiece, completing the pre-fixation before welding. The first fixing clamp and the second fixing clamp in the present invention are positioned and adjusted when they are fixed to the frame, so that the positions of the tubular workpiece and the end piece respectively fixed by the first fixing clamp and the second fixing clamp can be guaranteed, ensuring that the end piece can be aligned with the end of the tubular workpiece, and ensuring the accuracy of the pre-fixation of the end piece and the tubular workpiece before welding. In addition, the first fixing clamp and the second fixing clamp are used in the technical solution of the present invention to replace the existing manual fixing method to fix the tubular workpiece and the end piece respectively, thereby improving the fixing efficiency of the tubular workpiece and the end piece before welding. In addition, after the end piece abuts against the tubular workpiece, the first fixing clamp can also drive the second fixing clamp to rotate relative to the frame, facilitating the circumferential welding operation of the tubular workpiece and the end piece, and improving the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0027] Figure 1 It is a structural schematic diagram of an embodiment of a welding fixing fixture of the present invention;

[0028] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0029] Figure 3 This is a schematic diagram of the structure of the welding fixture of the present invention fixing the workpiece to be welded;

[0030] Figure 4 It is a cross-sectional view of the second rotating shaft of the welding fixing fixture of the present invention.

[0031] Description of Figure Numbers:

[0032]

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] The present invention provides a welding fixture 100 .

[0039] Reference Figures 1 to 3 In an embodiment of the present invention, the welding fixture 100 includes a frame 10; a first fixing clamp 30, which is rotatably disposed on the frame 10, and is used to fix the tubular workpiece 210; and a second fixing clamp 40, which is disposed on the frame 10 and is arranged opposite to the first fixing clamp 30, and the second fixing clamp 40 can move closer to or away from the first fixing clamp 30, and is used to fix the end piece 230; when the second fixing clamp 40 moves closer to the first fixing clamp 30 so that the end piece 230 abuts against the end of the tubular workpiece 210, the first fixing clamp 30 drives the second fixing clamp 40 to rotate relative to the frame 10.

[0040] The welding fixture 100 in the technical solution of the present invention is provided with a first fixing clamp 30 for fixing the tubular workpiece 210 and a second fixing clamp 40 for fixing the end piece 230 on the frame 10, and the second fixing clamp 40 can be arranged close to or away from the first fixing clamp 30, so that the end piece 230 can be moved to a position abutting against the end of the tubular workpiece 210, so as to achieve pre-fixation before welding. The first fixing clamp 30 and the second fixing clamp 40 in the present invention are positioned and adjusted when they are fixed to the frame 10, so that the positions of the tubular workpiece 210 and the end piece 230 respectively fixed by the first fixing clamp 30 and the second fixing clamp 40 can be ensured, so as to ensure that the end piece 230 can be aligned with the end of the tubular workpiece 210, and ensure the accuracy of the pre-fixation of the end piece 230 and the tubular workpiece 210 before welding. Furthermore, the technical solution of the present invention uses the first fixing clamp 30 and the second fixing clamp 40 to replace the existing manual fixing method to fix the tubular workpiece 210 and the end piece 230 respectively, thereby improving the fixing efficiency of the tubular workpiece 210 and the end piece 230 before welding. In addition, after the end piece 230 abuts against the tubular workpiece 210, the first fixing clamp 30 can also drive the second fixing clamp 40 to rotate relative to the frame 10, thereby facilitating the circumferential welding operation of the tubular workpiece 210 and the end piece 230, thereby improving the welding efficiency.

[0041] Reference Figure 1 and Figure 3 In one embodiment of the present invention, the welding fixture 100 further includes a first driving assembly 20, the first driving assembly 20 is fixed to the frame 10, and the first driving assembly 20 is transmission-connected to the first fixing clamp 30 to drive the first fixing clamp 30 to rotate relative to the frame 10.

[0042] In the technical solution of one embodiment of the present invention, the frame 10 includes a base 11, the base 11 has a length direction, and the frame 10 is also fixed with a mounting plate 13 and a mounting frame 15 at both ends of the length direction of the base 11. The first drive assembly 20 is fixed on the mounting plate 13 and is in transmission connection with the first fixing clamp 30. The first drive assembly 20 drives the first fixing clamp 30 to rotate relative to the frame 10, which can facilitate the welding head to perform circumferentially on the tubular workpiece 210 and the end piece 230. In this way, the strength of the connection between the tubular workpiece 210 and the end piece 230 can be improved, and the welding quality can be improved. It should be noted that the welding head can be fixed on the base 11 or fixed at a position outside the welding fixture 100, as long as it is convenient to weld the tubular workpiece 210 and the end piece 230, and no specific limitation is made here. The welding head can be a laser welding head or a argon arc welding head, as long as it can melt the materials at the edges of the tubular workpiece 210 and the end piece 230 and achieve fixed connection, and no specific limitation is made here.

[0043] Reference Figure 1 and Figure 3 In one embodiment of the present invention, the first driving assembly 20 includes: a first driving member 21, which is fixed to the frame 10; a synchronous wheel 23, which includes a driving wheel 231, a driven wheel 233 and a synchronous belt 235, the driving wheel 231 is transmission-connected to the output end of the first driving member 21, and the driven wheel 233 is transmission-connected to the driving wheel 231 through the synchronous belt 235; and a first rotating shaft 25, which is rotatably fixed to the frame 10, one end of the first rotating shaft 25 is transmission-connected to the driven wheel 233, and the other end is fixedly connected to the first fixing clamp 30.

[0044] In the technical solution of an embodiment of the present invention, the first driving member 21 is a driving motor, the mounting plate 13 has two opposite sides, the driving motor is fixed on one side of the mounting plate 13, the output shaft of the driving motor passes through the mounting plate 13, the other side of the mounting plate 13 is fixed with a synchronous wheel 23, one end of the first rotating shaft 25 is transmission-connected with the driven wheel 233 of the synchronous wheel 23, and the other end passes through the mounting plate 13 and is fixedly connected with the first fixing clamp 30. In this way, the driving motor can be transmission-connected with the first fixing clamp 30, and the first fixing clamp 30 can be driven to rotate relative to the frame 10. The synchronous wheel 23 has the advantages of high-precision transmission torque, time-saving, high efficiency, and compact structure, which can not only ensure good transmission accuracy and transmission efficiency, but also make the structure of the welding fixture 100 compact, reduce the space occupied by the welding fixture 100, and reduce costs.

[0045] Reference Figure 1 and Figure 3 In one embodiment of the present invention, the first fixing clamp 30 includes: a first fixing clamp body 31, one side of the first fixing clamp body 31 is fixedly connected to the first rotating shaft 25; and a pressure plate 33, the pressure plate 33 is movably connected to the first fixing clamp body 31, and the tubular workpiece 210 is clamped and fixed between the pressure plate 33 and the first fixing clamp body 31.

[0046] In the technical solution of an embodiment of the present invention, the first fixing clamp body 31 is a fixing plate, and a fixing groove 311 is formed on the surface of the fixing plate. The fixing groove 311 is adapted to the shape of the tubular workpiece 210. The setting of the fixing groove 311 can improve the fixing efficiency of the tubular workpiece 210 on the one hand, and on the other hand, it can also improve the firmness of fixing the tubular workpiece 210 and prevent the tubular workpiece 210 from rotating relative to the fixing plate. The pressing plate 33 is movably arranged on one side of the fixing plate where the fixing groove 311 is arranged. The pressing plate 33 can move closer to or away from the fixing plate to clamp and fix the tubular workpiece 210 in the fixing groove 311, prevent the first fixing clamp 30 from being separated from the fixing groove 311 during the rotation relative to the frame, and ensure the firmness of fixing the tubular workpiece 210.

[0047] It should be noted that the first rotating shaft 25 and the fixing plate can be connected in a detachable manner or in a non-detachable manner. In one embodiment, a first fixing hole (not shown) is provided on the first rotating shaft 25, and a second fixing hole (not shown) is provided on the fixing plate. The first rotating shaft 25 and the fixing plate are detachably connected through a connecting member (not shown) cooperating with the first fixing hole and the second fixing hole. The connecting member can be a screw, a pin, etc.

[0048] Reference Figure 1 and Figure 3 In one embodiment of the present invention, the first fixing clamp 30 further includes a third driving member 35, the third driving member 35 is fixedly connected to the first fixing clamp body 31, the output end of the third driving member 35 is fixedly connected to the pressure plate 33, and the third driving member 35 drives the pressure plate 33 to move closer to or away from the first fixing clamp body 31.

[0049] In the technical solution of one embodiment of the present invention, the pressing plate 33 is driven by the third driving member 35, and the third driving member 35 includes a fixed body and a movable body connected to the fixed body, wherein the fixed body is fixedly connected to the fixed plate, the movable body is fixedly connected to the pressing plate 33, and the movable body moves relative to the fixed body to drive the pressing plate 33 to move closer to or away from the fixed plate. Among them, the third driving member 35 can be an electric cylinder, and the cylinder body and the push rod 75 of the electric cylinder respectively form the fixed body and the movable body of the third driving member 35, and the electric cylinder push rod 75 penetrates the fixed plate and is fixedly connected to the pressing plate 33. The third driving member 35 can also be a linear motor, and the motor part and the lead screw of the linear motor form the fixed body of the third driving member 35, and the slide of the linear motor forms the movable body of the third driving member 35, one end of the lead screw is connected to the motor part, and the other end penetrates the fixed plate, the slide is slidably connected to the lead screw, and the pressing plate 33 is fixedly connected to the slide, and the motor drives the lead screw to rotate to drive the slide and the lead screw to move, thereby driving the pressing plate 33 to move closer to or away from the fixed plate.

[0050] Reference Figure 1 and Figure 3 In one embodiment of the present invention, the welding fixture 100 also includes a second driving assembly 50, the second driving assembly 50 includes a second driving member 51 and a fixing frame 53, the second driving member 51 is fixedly connected to the frame 10, the fixing frame 53 is fixedly connected to the output end of the second driving member 51, and the second fixing clamp 40 is rotatably arranged on the fixing frame 53; the second driving member 51 drives the fixing frame 53 to slide relative to the frame 10, so that the second fixing clamp 40 is close to or away from the first fixing clamp 30.

[0051] In the technical solution of one embodiment of the present invention, the second driving member 51 is an electric cylinder, the cylinder body of the electric cylinder is fixed to the frame 10, specifically, the cylinder body of the electric cylinder is fixed to the mounting frame 15, a push plate 511 is fixed to one end of the push rod 75 of the electric cylinder away from the cylinder body, the push plate 511 is fixedly connected to the fixing frame 53, and the cylinder body of the electric cylinder drives the push rod 75 to extend and retract, so as to drive the fixing frame 53 to translate relative to the frame 10. In this embodiment, the push plate 511 can be fixedly connected to the bottom plate 531, or to the first fixing plate 533, and the push plate 511 can also be fixedly connected to the bottom plate 531 and the first fixing plate 533 at the same time.

[0052] Reference Figure 1 It should be noted that the fixing frame 53 is slidably fixed on the mounting frame 15. Specifically, the fixing frame 53 includes a bottom plate 531 and a first fixing plate 533 and a second fixing plate 535 protruding from the surface of the bottom plate 531. The first fixing plate 533 and the second fixing plate 535 are spaced and arranged opposite to each other. The surface of the bottom plate 531 facing the mounting frame 15 is provided with one of a slide groove and a slide rail. The mounting frame 15 is provided with the other of a slide groove and a slide rail. The slide groove cooperates with the slide rail to realize the sliding connection between the fixing frame 53 and the mounting frame 15. In some embodiments, the slide rail or the slide groove can be an integral structure with the bottom plate 531, or a structure that can be detachably connected to the bottom plate 531; similarly, the slide rail or the slide groove can be an integral structure with the mounting frame 15, or a structure that can be detachably connected to the bottom plate 531. By providing the slide rail and the slide groove, the resistance of the fixing frame 53 during the movement can be reduced, and the convenience of the movement of the fixing frame 53 can be improved. At the same time, the use of the slide rail and the slide groove can also guide the movement of the fixed frame 53, prevent the fixed frame 53 from deviating during the movement, improve the accuracy of the translation of the fixed frame 53, ensure the accurate abutment between the end piece 230 and the tubular workpiece 210, and further improve the accuracy of the welding between the end piece 230 and the tubular workpiece 210.

[0053] Reference Figures 1 to 3In one embodiment of the present invention, the fixing frame 53 is provided with a first rotating shaft 25 hole, the second fixing clamp 40 includes a second rotating shaft 41 and an adsorption device 43, the second rotating shaft 41 can be rotatably passed through the first rotating shaft 25 hole, the end surface of the second rotating shaft 41 is provided with an air suction hole 411 penetrating the second rotating shaft 41, the adsorption device 43 is fixed to one end of the second rotating shaft 41 away from the first fixing clamp 30, and the adsorption device 43 adsorbs the end piece 230 to one end of the second rotating shaft 41 close to the first fixing clamp 30 through the air suction hole 411.

[0054] In the technical solution of one embodiment of the present invention, the hole of the first rotating shaft 25 is provided on the surface of the first fixed plate 533, and the second rotating shaft 41 is penetrated in the hole of the first rotating shaft 25 and can rotate relative to the hole of the first rotating shaft 25. The suction hole 411 can be one or multiple holes arranged at intervals. The adsorption device 43 is fixed to the end of the second rotating shaft 41 away from the first fixed clamp 30, and the adsorption device 43 is connected to the suction hole 411. During use, the end piece 230 is placed on the end face of the second rotating shaft 41, and the adsorption device 43 washes out the air in the suction hole 411 so that the end piece 230 is fixed to the end face of the second rotating shaft 41. The adsorption device 43 can be a vacuum adsorption device 43. In some embodiments, there are multiple suction holes 411, and the multiple suction holes 411 are distributed at intervals on the end face of the second rotating shaft 41. In this way, adsorption force can be applied to the end piece 230 from multiple directions, which can improve the effect of fixing the end piece 230.

[0055] Reference Figure 3 and Figure 4 In some embodiments, the air intake hole 411 includes a main air intake hole 4113 and a sub-air intake hole 4111, wherein the main air intake hole 4113 is provided on the end surface of the second shaft 41 away from the first fixing clamp 30, and the adsorption device 43 is fixed to the end of the second shaft 41 away from the first fixing clamp 30 through an adapter, and is connected to the main air intake hole 4113. A plurality of sub-air intake holes 4111 are provided on the end of the second shaft 41 facing the first fixing clamp 30, and each sub-air intake hole 4111 is connected to the main air intake hole 4113. By setting the air intake hole 411 to include the main air intake hole 4113 and the sub-air intake hole 4111, on the one hand, the connection between the air intake device and the air intake hole 411 is facilitated, and the obstruction between the air intake device and the air intake hole 411 is reduced. On the other hand, a plurality of sub-air intake holes 4111 can be provided to ensure that the adsorption force can be applied to the end piece 230 from multiple directions, thereby improving the fixing effect of the end piece 230.

[0056] Reference Figures 1 to 3In one embodiment of the present invention, the fixing frame 53 further includes a rotating shaft fixing seat 60 and a bearing. The rotating shaft fixing seat 60 is fixedly connected to the fixing frame 53. The rotating shaft fixing seat 60 is provided with a second rotating shaft 41 hole. The central axis of the second rotating shaft 41 hole coincides with the central axis of the first rotating shaft 25 hole. An accommodating cavity is formed inside the rotating shaft fixing seat 60. The bearing is sleeved on the surface of the second rotating shaft 41 and fixed in the accommodating cavity.

[0057] In the technical solution of one embodiment of the present invention, the rotating shaft fixing seat 60 is fixedly connected to the first fixing plate 533, and the second rotating shaft 41 hole in the rotating shaft fixing seat 60 and the first rotating shaft 25 hole in the first fixing plate 533 are coaxially arranged, so that the coaxiality of the second rotating shaft 41 can be ensured during the rotation process, and the progress of the pre-fixation of the end piece 230 and the tubular workpiece 210 can be improved to ensure the quality of the welded workpiece. The rotating shaft fixing seat 60 is provided with a bearing inside. The setting of the bearing can improve the coaxiality of the second rotating shaft 41 on the one hand, and on the other hand, the setting of the bearing can also reduce the friction of the rotation of the second rotating shaft 41, and reduce the difficulty of the rotation of the second rotating shaft 41.

[0058] Reference Figure 1 and Figure 3 In one embodiment of the present invention, the welding fixture 100 also includes a positioning assembly 70, the positioning assembly 70 includes a positioning plate 73 and a fourth driving member 71, the fourth driving member 71 is fixedly connected to the fixing frame 53, the positioning plate 73 is fixedly connected to the output end of the fourth driving member 71, the positioning plate 73 is provided with a through hole 731 and a positioning portion, the positioning portion is arranged toward the first fixing clamp 30, the second rotating shaft 41 is passed through the through hole 731, and the fourth driving member 71 drives the positioning plate 73 to move in a direction away from the first fixing clamp so that the end piece 230 abuts against the positioning portion to correct the position of the end piece 230.

[0059] In the technical solution of one embodiment of the present invention, the fourth driving member 71 includes a fixed body and a movable body, wherein the fixed body is fixed on the second fixed plate 535, the movable body is movably fixedly connected to the fixed body, and the positioning plate 73 is fixedly connected to the movable body. The movable body moves relative to the fixed body to drive the positioning plate 73 to move relative to the fixed frame 53, so that the positioning plate 73 moves toward the first fixed frame 53, so that the end piece 230 abuts against the positioning portion of the positioning plate 73, so that the position of the end piece 230 is corrected, so that when the end piece 230 abuts against the tubular workpiece 210, the periphery of the end piece 230 is aligned with the periphery of the tubular workpiece 210, further improving the accuracy of fixing the end piece 230 to the tubular workpiece 210, and improving the quality of the welding process of the workpiece.

[0060] The fourth driving member 71 may be an electric cylinder, the cylinder body and the push rod 75 of the electric cylinder respectively form the fixed body and the movable body of the fourth driving member, one end of the push rod 75 is fixedly connected to the cylinder body, and the other end passes through the first fixing plate 533 and is fixedly connected to the positioning plate 73. It should be noted that the number of the push rods 75 is at least two, and the two push rods 75 are respectively located on opposite sides of the second rotating shaft 41. Such an arrangement can improve the stability of the positioning device during the movement and improve the positioning effect.

[0061] Reference Figure 3 In one embodiment of the present invention, the positioning portion is provided with a positioning groove 733, the bottom wall of the positioning groove 733 is provided with the through hole 731, and the end piece 230 abuts against the groove wall of the positioning groove 733 to correct the position of the end piece 230.

[0062] In the technical solution of one embodiment of the present invention, the positioning portion is provided with a positioning groove 733, and the contour of the positioning groove 733 is at least partially adapted to the end piece 230. When the end piece 230 is circular, the central axis of the positioning groove 733 coincides with the central axis of the through hole 731, so that the end piece 230 is corrected by the positioning groove 733, and the central axis of the end piece 230 also coincides with the central axis of the positioning groove 733, so as to improve the fixing accuracy of the end piece 230.

[0063] It should be noted that the welding jig in the embodiment of the present invention can fix workpieces such as door handles 200 and window handles. However, the welding jig in the embodiment of the present invention is not limited to processing the above workpieces, and any workpiece that is processed in the same or similar manner as the above workpiece can be fixed using the welding jig in the embodiment of the present invention.

[0064] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A welding fixture, It is characterized in that include: frame; A first fixing clamp, the first fixing clamp is rotatably disposed on the frame, and the first fixing clamp is used to fix the tubular workpiece; a second fixing clip, the second fixing clip being arranged on the frame and opposite to the first fixing clip, the second fixing clip being used to fix the end piece, the second fixing clip comprising a second rotating shaft and an adsorption device; When the second fixing clamp moves close to the first fixing clamp so that the end piece abuts against the end of the tubular workpiece, the first fixing clamp drives the second fixing clamp to rotate relative to the frame; The second driving assembly comprises a second driving member and a fixing frame, the second driving member is fixedly connected to the frame, the fixing frame is fixedly connected to the output end of the second driving member, the fixing frame is provided with a first rotating shaft hole, the second rotating shaft can be rotatably passed through the first rotating shaft hole, an end surface of the second rotating shaft is provided with an air suction hole penetrating the second rotating shaft, the adsorption device is fixed to an end of the second rotating shaft away from the first fixing clamp, the adsorption device adsorbs the end piece to an end of the second rotating shaft close to the first fixing clamp through the air suction hole; the second driving member drives the fixing frame to slide relative to the frame, so that the second fixing clamp is close to or away from the first fixing clamp; A positioning assembly, the positioning assembly includes a positioning plate and a fourth driving member, the fourth driving member includes a fixed body and a movable body, the fixed body is fixed on the fixed frame, the movable body is movably fixedly connected to the fixed body, the positioning plate is fixedly connected to the movable body, the positioning plate is provided with a through hole and a positioning portion, the positioning portion is arranged toward the first fixing clamp, the second rotating shaft is passed through the through hole, and the fourth driving member drives the positioning plate to move in a direction away from the first fixing clamp so that the end piece abuts against the positioning portion to correct the position of the end piece.

2. The welding fixture as claimed in claim 1, It is characterized in that The welding fixture further includes a first driving assembly, which is fixed to the frame and is transmission-connected to the first fixing clamp to drive the first fixing clamp to rotate relative to the frame.

3. The welding fixture as claimed in claim 2, It is characterized in that The first driving assembly comprises: a first driving member, the first driving member being fixed to the frame; A synchronous wheel, the synchronous wheel comprising a driving wheel, a driven wheel and a synchronous belt, the driving wheel is drivingly connected to the output end of the first driving member, and the driven wheel is drivingly connected to the driving wheel through the synchronous belt; and A first rotating shaft, wherein the first rotating shaft can be rotatably fixed to the frame, one end of the first rotating shaft is drivingly connected to the driven wheel, and the other end is fixedly connected to the first fixing clamp.

4. The welding fixture as claimed in claim 3, It is characterized in that The first fixing clip comprises: A first fixing clamp body, one side of which is fixedly connected to the first rotating shaft; and A pressing plate is movably connected to the first fixing clamp body, and the pressing plate and the first fixing clamp body clamp and fix the tubular workpiece.

5. The welding fixture as claimed in claim 4, It is characterized in that The first fixing clamp further includes a third driving member, which is fixedly connected to the first fixing clamp body. The output end of the third driving member is fixedly connected to the pressure plate, and the third driving member drives the pressure plate to move closer to or away from the first fixing clamp body.

6. The welding fixture as claimed in claim 1, It is characterized in that The fixing frame also includes a rotating shaft fixing seat and a bearing. The rotating shaft fixing seat is fixedly connected to the fixing frame. The rotating shaft fixing seat is provided with a second rotating shaft hole. The central axis of the second rotating shaft hole coincides with the central axis of the first rotating shaft hole. An accommodating cavity is formed inside the rotating shaft fixing seat. The bearing is sleeved on the surface of the second rotating shaft and fixed in the accommodating cavity.

7. The welding fixture as claimed in claim 1, It is characterized in that The positioning portion is provided with a positioning groove, the bottom wall of the positioning groove is provided with the through hole, and the end piece abuts against the groove wall of the positioning groove to correct the position of the end piece.

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