Component transmission device for laser welding of machine tool

Abstract

The invention discloses a part transmission device for laser welding of a machine tool, relates to the technical field of laser welding, and aims to solve the technical problem that laser welding steps are tedious. Comprising a base, a three-axis moving mechanism, a laser welding mechanism, a mounting base, a straight column, a plurality of section columns, a hinge assembly B, two positioning mechanisms A, a plurality of positioning mechanisms B, an elastic mechanism, a rotating mechanism and an inserting mechanism. According to the laser welding device, one square tube to be subjected to laser welding is jointly fixed through the two positioning mechanisms A, and the other square tube to be subjected to laser welding is jointly fixed through the multiple positioning mechanisms B, so that the two square tubes to be subjected to laser welding, the straight column, the multiple section columns, the hinge assembly B, the two positioning mechanisms A and the multiple positioning mechanisms B form a fixing structure; the two square tubes to be subjected to laser welding are rotated through the rotating shaft, the laser welding mechanism is used for conducting one-time laser welding on the two square tubes to be subjected to laser welding, and the technical problem that the laser welding steps are tedious is solved.

Description

Technical Field

[0001] This invention relates to the field of laser welding technology, and more specifically, to a transmission device for laser welding components in machine tools. Background Technology

[0002] Laser welding focuses a laser beam onto the joint of the workpieces, instantly converting light energy into heat energy, which rapidly melts the materials being welded, forming a specific molten pool. After cooling and solidification, the weld is achieved. Compared with traditional welding technologies such as resistance welding, argon arc welding, and plasma welding, laser welding has advantages such as high penetration depth, small thermal deformation, high efficiency, and high processing precision.

[0003] When laser welding square tubes, to ensure that the two sections of the square tube do not move or deform during the welding process, and to ensure that the gap and misalignment of the parts to be welded meet the welding process requirements, auxiliary positioning devices such as locating pins and locating blocks may be needed to guarantee the accuracy of the weld joint. This is especially important when laser welding two sections of square tubes into a weld joint. Figure 1 When the square tube is in a right-angled shape, laser welding requires multiple positioning, fixing, and position adjustments, making the laser welding process cumbersome and leading to decreased welding accuracy. Therefore, we propose a component transmission device for laser welding in machine tools. Summary of the Invention

[0004] The purpose of this invention is to provide a component transmission device for laser welding of machine tools, so as to solve the technical problem of cumbersome laser welding steps.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A component transmission device for laser welding of machine tools, comprising a base, a three-axis moving mechanism fixedly mounted on the top of the base, a laser welding mechanism fixedly mounted on the movable end of the three-axis moving mechanism, a mounting seat below the laser welding mechanism, the mounting seat being fixedly connected to the base, a straight column rotatably connected to the mounting seat, a plurality of segmented columns provided on the head side of the straight column, two adjacent segmented columns being connected by two hinge components A arranged in a symmetrical structure, the straight column being connected to the corresponding segmented column by two hinge components B arranged in a symmetrical structure, the straight column being provided with an elastic mechanism and two positioning mechanisms A, the segmented columns being provided with positioning mechanisms B, and the mounting seat being provided with a rotating mechanism and a plugging mechanism;

[0006] The rotating mechanism includes a motor A, a long adjusting shaft for adjusting the two positioning mechanisms A, and several short adjusting shafts for adjusting the positioning mechanism B.

[0007] The motor A is fixed at the tail end of the mounting seat, the adjusting long shaft is rotatably arranged on the straight column, the tail end of the adjusting long shaft penetrates through the mounting seat and is fixedly connected with the output shaft of the motor A, the head of the adjusting long shaft is annular and is provided with a plurality of plug-in grooves at equal intervals, and a plurality of adjusting short shafts are rotatably arranged on the section columns respectively.

[0008] The plug-in mechanism comprises a functional ring block and a plurality of plug-in rods, the functional ring block is sleeved on the head of the straight column, an annular groove is formed in the inner edge surface of the functional ring block, the eccentric ends of the plurality of plug-in rods are movably connected with the annular groove, one side of the annular groove is annular and is provided with triangular grooves at equal intervals, the plurality of plug-in rods are movably matched with the plurality of triangular grooves respectively, and the centripetal ends of the plurality of plug-in rods are plug-in matched with the plug-in grooves respectively.

[0009] Preferably, the head of the straight column is annular and is provided with four eccentric sliding grooves at equal intervals, the inner side of the straight column is provided with movable grooves A at positions opposite to the two sides of the eccentric sliding grooves, four eccentric grooves A are communicated on the movable grooves A, the tail end of the straight column is annular and is provided with a plurality of straight grooves at equal intervals, and threaded grooves are formed in the surface of the straight column at positions on the head sides of the plurality of straight grooves.

[0010] Preferably, the section column is provided with a movable groove B, four eccentric grooves B are communicated on the movable groove B, the articulated assembly A comprises two articulated plates A, the two articulated plates A are fixedly connected with the corresponding two section columns respectively, the two articulated plates A are rotatably connected through a rotating rod A, the opposite ends of the two articulated plates A are provided with rotating grooves at positions opposite to the rotating rod A, and the two rotating grooves are elastically connected through a torsion spring A.

[0011] Preferably, the hinge assembly B comprises two hinge plates B, the two hinge plates B are fixedly connected with the corresponding hinge column and the straight column respectively, the two hinge plates B are rotatably connected through a rotating rod B, a sliding groove is arranged on the rotating rod B, a column body is fixedly arranged on the two hinge plates B at both ends, a movable circular groove is arranged on the column body, a movable block is movably arranged on the movable circular groove, a sliding rod A is fixedly arranged at the bottom end of the movable block, the sliding rod A is slidably connected with the sliding groove, the movable block and the movable circular groove are elastically connected through a torsion spring B, the top end of the movable block penetrates through the column body and is fixedly arranged with a partial ball, and the partial ball is arranged in an inclined structure.

[0012] The torsion spring B is in a circular truncated cone structure.

[0013] Preferably, the positioning mechanism A comprises a sliding rod group A, two ring seats A and four positioning blocks A, the sliding rod group A is fixedly arranged on the movable groove A, the two ring seats A are slidably arranged on the two sides of the sliding rod group A, and the four positioning blocks A are arranged on the four eccentric grooves A. A elastic pad A is arranged on the positioning block A, limit sliding grooves A are arranged at the two ends of the positioning block A, sliding seats A are slidably connected with the limit sliding grooves A, the two sliding seats A and the two ring seats A are connected through X-shaped connecting rod units A, and a ball A is fixedly arranged in the ring seat A.

[0014] Preferably, the positioning mechanism B comprises a sliding rod group B, two ring seats B and four positioning blocks B, the sliding rod group B is fixedly arranged on the movable groove B, the two ring seats B are slidably arranged on the two sides of the sliding rod group B, and the four positioning blocks B are arranged on the four eccentric grooves B. A elastic pad B is arranged on the positioning block B, limit sliding grooves B are arranged at the two ends of the positioning block B, sliding seats B are slidably connected with the limit sliding grooves B, the two sliding seats B and the two ring seats B are connected through X-shaped connecting rod units B, and a ball B is fixedly arranged in the ring seat B.

[0015] Preferably, the sliding seat A and the limit sliding groove A are elastically connected through a spring C, the sliding seat B and the limit sliding groove B are elastically connected through a spring D, and the spring C and the spring D are both in a hourglass structure.

[0016] Preferably, the elastic mechanism comprises a threaded plate, a sliding plate and four sliding rods, the threaded plate is threadedly connected with the threaded groove, the sliding plate is arranged on the head side of the threaded plate and is slidably connected with the straight column, the threaded plate and the sliding plate are elastically connected through a spring E, and the sliding rods are slidably arranged on the eccentric sliding grooves. An inclined guide surface is arranged on the head side of the sliding rod, and the sliding rod and the eccentric sliding groove are elastically connected through at least two springs F.

[0017] Preferably, the adjusting long shaft is provided with an adjusting guide groove A at both positions of the two movable grooves A; the adjusting guide groove A comprises two half-thread guide grooves A arranged in a symmetrical structure, and each of the two half-thread guide grooves A is provided with a semicircular guide groove A at the proximal end; the half-thread guide groove A and the semicircular guide groove A are movably connected with the corresponding ball block A;

[0018] The adjusting short shaft is provided with an adjusting guide groove B; the adjusting guide groove B comprises two half-thread guide grooves B arranged in a symmetrical structure, and each of the two half-thread guide grooves B is provided with a semicircular guide groove B at the distal end; the half-thread guide groove B and the semicircular guide groove B are movably connected with the corresponding ball block B;

[0019] The half-thread guide groove A and the half-thread guide groove B are arranged alternately.

[0020] Preferably, the plug-in mechanism further comprises a plurality of sliding ring blocks and a motor B; the sliding ring blocks are movably arranged in the straight grooves; the sliding ring blocks and the straight grooves are elastically connected through springs G; the plug-in rod is fixedly arranged on the sliding ring block; the functional ring block is slidably connected with the mounting seat through a plurality of slide rods B; a screw rod is threadedly connected to the functional ring block; the mounting seat is provided with a mounting groove; the motor B is fixedly arranged in the mounting groove; and the tail end of the screw rod penetrates into the mounting groove and is fixedly connected with the output shaft of the motor B.

[0021] The beneficial effects of the present application are as follows:

[0022] 1. The present application adjusts two positioning mechanisms A through the adjusting long shaft, so that the two positioning mechanisms A jointly fix one square tube to be laser welded; the positioning mechanism B is adjusted through the adjusting short shaft, so that a plurality of positioning mechanisms B jointly fix another square tube to be laser welded; the two square tubes to be laser welded, the straight column, the plurality of joint columns, the hinge assembly B, the two positioning mechanisms A and the plurality of positioning mechanisms B form a fixed structure; the plug-in rod is adjusted to be inserted into the plug-in groove through the functional ring block; the rotation of the adjusting long shaft can drive the straight column to rotate, so that the two square tubes to be laser welded are rotated, and the laser welding mechanism can perform one-time laser welding on the two square tubes to be laser welded; compared with the conventional laser welding method, the present application can fix the square tubes to be laser welded after positioning and can complete one-time laser welding, thereby solving the technical problem of complicated laser welding steps.

[0023] 2. Through the structural design of the hinge assembly B, part of the ball blocks are in contact with the inclined surfaces of the square tubes to be welded, so that the position of the plurality of joint columns and the plurality of hinge assemblies A is automatically driven to change and form a right angle with the straight column, without the need for manual adjustment of the angle, thereby improving the matching precision of the welding surface and further solving the technical problem of complicated laser welding steps.

[0024] 3、The present application also presents a circular truncated cone structure of torsion spring B, the stress is dispersed through non-uniform deformation of the circular truncated cone structure, the outer ring bears torque when rotating, and the inner ring participates in deformation when stretching and retracting, so that the fatigue risk is significantly reduced, and the service life of the key hinged components is prolonged.

[0025] 4、The present application presents a sandglass structure of spring C and spring D, so that the spring C and spring D are not easy to bend and twist when stretching and retracting, further ensuring the elastic force balance of the two springs C and the elastic force balance of the two springs D, and ensuring uniform distribution of clamping force.

[0026] 5、The present application presents a structure design of the rotating mechanism, so that the positioning mechanisms A and B act in turns, ensuring that the two square tubes are clamped and butted in turn and closely, avoiding the misalignment problem caused by traditional synchronous clamping, and further solving the technical problem of complicated laser welding steps.

[0027] 6、The present application presents a structure design of the elastic mechanism, realizing fast pre-positioning of the square tube, reducing manual adjustment time, and further solving the technical problem of complicated laser welding steps. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0029] Figure 2 It is a schematic diagram of part of the structure of the present application;

[0030] Figure 3 It is a schematic diagram of part of the structure of the present application;

[0031] Figure 4 It is a schematic diagram of part of the structure of the present application;

[0032] Figure 5 It is a schematic diagram of part of the structure of the present application;

[0033] Figure 6 It is an enlarged schematic diagram of A part of the present application; Figure 5

[0034] Figure 7 It is a schematic diagram of part of the structure of the present application;

[0035] Figure 8 It is a schematic diagram of part of the structure of the present application;

[0036] Figure 9 It is a schematic diagram of part of the structure of the present application;

[0037] ​Figure 10 Part structure section view of the straight column, positioning mechanism B, elastic mechanism and rotating mechanism of the present application;

[0038] Figure 11 Part structure section view of the straight column, positioning mechanism B, elastic mechanism and rotating mechanism of the present application; Figure 10 Enlarged view of the B part structure of the present application;

[0039] Figure 12 Split structure view of the present application about the joint column;

[0040] Figure 13 Section structure view of the positioning mechanism B of the present application;

[0041] Figure 14 Structure view of the torsion spring A, torsion spring B and spring D of the present application;

[0042] Figure 15 Part structure view of the rotating mechanism of the present application.

[0043] Explanation of the figure marks;

[0044] 1, base; 11, three-axis moving mechanism; 12, laser welding mechanism;

[0045] 2, mounting seat; 21, mounting groove;

[0046] 3, straight column; 31, eccentric sliding groove; 32, movable groove A; 33, eccentric groove A; 34, straight groove; 35, threaded groove;

[0047] 4, joint column; 41, movable groove B; 42, eccentric groove B; 43, hinged assembly A; 431, hinged plate A; 432, rotating groove; 433, torsion spring A;

[0048] 5, hinged assembly B; 51, hinged plate B; 52, sliding-through groove; 53, column body; 54, movable circular groove; 55, movable block; 56, sliding rod A; 57, torsion spring B; 58, partial ball block;

[0049] 6, positioning mechanism A; 60, elastic pad A; 61, sliding rod set A; 62, ring seat A; 63, positioning block A; 64, limiting sliding groove A; 65, sliding seat A; 66, connecting rod unit A; 67, ball block A; 68, spring C;

[0050] 7, positioning mechanism B; 70, elastic pad B; 71, sliding rod set B; 72, ring seat B; 73, positioning block B; 74, limiting sliding groove B; 75, sliding seat B; 76, connecting rod unit B; 77, ball block B; 78, spring D;

[0051] 8, elastic mechanism; 81, threaded plate; 82, spring E; 83, sliding plate; 84, sliding strip; 85, spring F;

[0052] 9, rotating mechanism; 90, plug-in slot; 91, motor A; 92, adjusting long shaft; 93, adjusting guide slot A; 931, half-threaded guide slot A; 932, half-circle guide slot A; 94, adjusting short shaft; 95, adjusting guide slot B; 951, half-threaded guide slot B; 952, half-circle guide slot B; 96, universal joint B; 97, universal joint A;

[0053] 10, plug-in mechanism; 101, sliding ring block; 102, spring G; 103, plug-in rod; 104, functional ring block; 105, sliding rod B; 106, screw rod; 107, motor B; 108, ring slot; 109, triangular slot. DETAILED DESCRIPTION

[0054] As shown in the drawings, the machine tool laser welding component transmission device of the present application comprises a base 1, a three-axis moving mechanism 11, a laser welding mechanism 12, a mounting seat 2, a straight column 3, a plurality of section columns 4, a hinged assembly B 5, two positioning mechanisms A 6, a plurality of positioning mechanisms B 7, an elastic mechanism 8, a rotating mechanism 9, and a plug-in mechanism 10. Figures 1 to 15 The three-axis moving mechanism 11 is arranged at the top end of the base 1.

[0055] The laser welding mechanism 12 is fixedly arranged at the movable end of the three-axis moving mechanism 11. The three-axis moving mechanism 11 and the laser welding mechanism 12 of the present application are both prior art and will not be described here.

[0056] The mounting seat 2 is arranged below the laser welding mechanism 12 and is fixedly connected with the base 1, and a mounting slot 21 is formed in the mounting seat 2.

[0057] The straight column 3 is rotatably arranged on the mounting seat 2, the head of the straight column 3 is annularly and equidistantly arranged with four eccentric sliding grooves 31, the straight column 3 is arranged with movable grooves A 32 at positions opposite to both sides of the eccentric sliding grooves 31, four eccentric grooves A 33 are communicated and arranged on the movable grooves A 32, the tail of the straight column 3 is annularly and equidistantly arranged with a plurality of straight grooves 34, and a threaded groove 35 is arranged at a position on the surface of the straight column 3 at the head side of the straight grooves 34.

[0058] A plurality of section columns 4 are linearly and equidistantly arranged at the head side of the straight column 3, the section column 4 is arranged with a movable groove B 41, and four eccentric grooves B 42 are communicated and arranged on the movable groove B 41.

[0059] A plurality of section columns 4 are linearly and equidistantly arranged at the head side of the straight column 3, the section column 4 is arranged with a movable groove B 41, and four eccentric grooves B 42 are communicated and arranged on the movable groove B 41.

[0060] Two adjacent segments 4 are connected by two symmetrically arranged hinge components A43. Each hinge component A43 includes two hinge plates A431, which are fixedly connected to the corresponding two segments 4. The two hinge plates A431 are rotatably connected by a rotating rod A. Each of the two hinge plates A431 has a rotating groove 432 at its opposite end relative to the rotating rod A. The two rotating grooves 432 are elastically connected by a torsion spring A433. This design allows adjacent segments 4 to rotate via the hinge components A43, facilitating the removal of the two square tubes after laser welding to a right angle. After removal, under the elastic force of the torsion spring A433, the segments 4 return to their original position. Figure 2 The straight lines shown facilitate the positioning and fixing of the square tube to be laser welded.

[0061] The straight column 3 and the corresponding segment column 4 are connected by two hinge components B5 arranged symmetrically. Each hinge component B5 includes two hinge plates B51, which are fixedly connected to the corresponding segment column 4 and the straight column 3, respectively. The two hinge plates B51 are rotatably connected by a rotating rod B. The rotating rod B has a sliding groove 52. A column 53 is fixedly mounted on each of the two hinge plates B51 at both ends. A movable circular groove 54 is provided on the column 53. A movable block 55 is movably mounted on the movable circular groove 54. A sliding rod A56 is fixedly mounted at the bottom of the movable block 55. The sliding rod A56 is slidably connected to the sliding groove 52. The movable block 55 and the movable circular groove 54 are elastically connected by a torsion spring B57. The top of the movable block 55 protrudes from the column 53 and is fixedly mounted with a partial ball block 58, which is arranged in an inclined structure.

[0062] It is worth mentioning that the hinge plate B51, which is fixedly connected to the pivot B on the segment column 4, is fixedly connected. Through the structural design of the hinge component B5, this invention allows the straight column 3 and the corresponding segment column 4 to rotate relative to each other. When the first square tube to be welded is positioned and fixed, the square tube is fitted onto the straight column 3, and the inclined surface of the square tube to be welded is closely aligned with part of the ball block 58. This causes part of the ball block 58 to drive the sliding rod A56, the pivot B, and the corresponding hinge plate B51 to rotate, thereby changing the position of several segment columns 4 and several hinge components A43, and forming a right angle with the straight column 3, which facilitates the positioning and fixing of another square tube to be welded.

[0063] The torsion spring B57 is in the structure of a circular truncated cone. The torsion spring B57 is designed in the structure of a circular truncated cone, so that when rotating, the torsion spring B57 bears the torque, the spiral structure of the circular truncated cone gradually shrinks from the large end to the small end due to the difference in the diameter of each coil, and non-uniform torsional deformation is generated. At this time, the torsion angle of the spring large end coil is smaller than that of the small end, which causes the overall spring to shrink or expand in the axial direction, and at the same time, the elastic potential energy is stored. When another pipe to be welded is installed, the torsion spring B57 will also stretch and contract. The circular truncated cone-shaped torsion spring B57 is still relatively stable behind the knob, and the change in the coil diameter of the torsion spring B57 makes the stress distribution more uniform. When rotating, the outer coil bears the main torque; when stretching and contracting, the inner coil participates in the axial deformation, avoiding repeated stress concentration in a single area, and significantly improving the fatigue life.

[0064] Two positioning mechanisms A6 are arranged on the straight column 3, and the positioning mechanism A6 comprises a slide rod set A61, two ring seats A62 and four positioning blocks A63. The slide rod set A61 is fixedly arranged on the movable groove A32, the two ring seats A62 are slidably arranged on the two sides of the slide rod set A61, and the four positioning blocks A63 are arranged on the four eccentric grooves A33. The positioning block A63 is embedded with an elastic pad A60, and the two ends of the positioning block A63 are provided with limiting sliding grooves A64. The limiting sliding grooves A64 are slidably connected with slide seats A65, the two slide seats A65 and the two ring seats A62 are connected through X-shaped connecting rod units A66, and the ring seat A62 is fixedly arranged with a ball block A67. Through the structural design of the positioning mechanism A6, when the two ring seats A62 relatively slide close to each other, the X-shaped connecting rod unit A66 drives the positioning block A63 and the elastic pad A60 to move along the eccentric direction, so that the elastic pad A60 is in close contact with the pipe to be welded, and the pipe to be welded is positioned and fixed. When the ring seats A62 relatively slide away from each other, the elastic pad A60 is separated from the pipe to be welded and enters the eccentric groove A33, so that the pipe to be welded is convenient to take out.

[0065] A plurality of positioning mechanisms B7 are arranged on the section columns 4, and the positioning mechanism B7 comprises a slide rod set B71, two ring seats B72 and four positioning blocks B73. The slide rod set B71 is fixedly arranged on the movable groove B41, the two ring seats B72 are slidably arranged on the two sides of the slide rod set B71, and the four positioning blocks B73 are arranged on the four eccentric grooves B42. The positioning block B73 is embedded with an elastic pad B70, and the two ends of the positioning block B73 are provided with limiting sliding grooves B74. The limiting sliding grooves B74 are slidably connected with slide seats B75, the two slide seats B75 and the two ring seats B72 are connected through X-shaped connecting rod units B76, and the ring seat B72 is fixedly arranged with a ball block B77. The positioning mechanism B7 has the same principle as the positioning mechanism A6, and details are not repeated here.

[0066] The sliding seat A65 is elastically connected with the limiting sliding groove A64 through a spring C68, the sliding seat B75 is elastically connected with the limiting sliding groove B74 through a spring D78, and the spring C68 and the spring D78 are both in the shape of a sandglass. Through the elastic force balance of the two springs C68, the positioning block A63 and the elastic pad A60 are not easy to deviate when moving along the eccentric direction or the centripetal direction. Through the elastic force balance of the two springs D78, the positioning block B73 and the elastic pad B70 are not easy to deviate when moving along the eccentric direction or the centripetal direction. The spring C68 and the spring D78 are both in the shape of a sandglass, so that the spring C68 and the spring D78 are not easy to bend and twist when stretching and retracting, further ensuring the elastic force balance of the two springs C68 and the elastic force balance of the two springs D78.

[0067] The elastic mechanism 8 comprises a threaded plate 81, a sliding plate 83 and four sliding strips 84, the threaded plate 81 is threadedly connected to the threaded groove 35, the sliding plate 83 is arranged at the head side of the threaded plate 81 and is slidably connected with the straight column 3, the threaded plate 81 is elastically connected with the sliding plate 83 through a spring E82, and the sliding strip 84 is slidably arranged in the eccentric sliding groove 31 and is provided with an inclined guide surface at the head side, and the sliding strip 84 is elastically connected with the eccentric sliding groove 31 through at least two springs F85. Through the structural design of the elastic mechanism 8, when the first square tube sleeve to be laser welded is arranged on the straight column 3, the end of the square tube first contacts with the inclined guide surface at the head side of the sliding strip 84, so that the sliding strip 84 slides into the square tube, and the plurality of sliding strips 84 preliminarily position the square tube at the center under the elastic force of the spring F85, and the end of the square tube drives the sliding plate 83 to slide, at this time, the hand is released, and the square tube slides towards the partial ball block 58 under the elastic force of the spring E82, so that the welding inclined surface of the square tube to be welded is tightly aligned with the partial ball block 58.

[0068] The rotating mechanism 9 comprises a motor A91, an adjusting long shaft 92 and a plurality of adjusting short shafts 94.

[0069] The motor A91 is fixedly arranged at the tail end of the mounting base 2, the adjusting long shaft 92 is rotatably arranged on the straight column 3, the tail end of the adjusting long shaft 92 penetrates through the mounting base 2 and is fixedly connected with the output shaft of the motor A91, the head of the adjusting long shaft 92 is annularly and equidistantly provided with a plurality of insertion grooves 90, and adjusting guide grooves A93 are arranged at the positions of the adjusting long shaft 92 relative to the two movable grooves A32. The adjusting guide grooves A93 comprise two half-thread guide grooves A931 arranged in a symmetrical structure, and half-circle guide grooves A932 are arranged at the proximal ends of the two half-thread guide grooves A931 and communicate with each other. The half-thread guide grooves A931 and the half-circle guide grooves A932 are movably matched with the corresponding ball blocks A67.

[0070] Several adjusting short shafts 94 are rotatably mounted on several of the segment columns 4. Each adjusting short shaft 94 is provided with an adjusting guide groove B95. The adjusting guide groove B95 includes two semi-threaded guide grooves B951 arranged symmetrically. Each semi-threaded guide groove B951 has a semi-circular guide groove B952 at its distal end. Both the semi-threaded guide grooves B951 and the semi-circular guide grooves B952 are movably engaged with the corresponding ball block B77. The semi-threaded guide grooves A931 and B951 are arranged alternately.

[0071] Two adjacent adjusting short shafts 94 are connected by universal joints A97, and the adjusting long shaft 92 is connected to the corresponding adjusting short shaft 94 by universal joints B96. Through the design of the rotating mechanism 9, the present invention enables the motor A91 to rotate, driving the adjusting long shaft 92 to rotate, and simultaneously rotating the universal joints B96, several adjusting short shafts 94, and several universal joints B96. During the first 180° rotation of the adjusting long shaft 92, the ball block A67 moves within the semi-threaded guide groove A931, causing the two ring seats A62 to slide closer together, resulting in close contact between the elastic pad A60 and the first square tube to be welded, thus positioning and fixing the square tube. The ball block B77 moves on the semi-circular guide groove B952, and the elastic pad B70... With the position unchanged, the long axis 92 is rotated 180° backward. Ball block A67 moves within the semi-circular guide groove A932, the elastic pad A60 remains in the same position, and ball block B77 moves on the semi-threaded guide groove B951. The elastic pad B70 makes close contact with the second square tube to be welded, thus positioning and fixing the square tube to be welded. Through the above design, the two square tubes to be welded are positioned and fixed in stages, ensuring accurate positioning of the two square tubes after positioning. The operation is simple, and it further solves the technical problem of cumbersome laser welding steps.

[0072] The insertion mechanism 10 includes a plurality of sliding ring blocks 101, a plurality of insertion rods 103, a functional ring block 104, and a motor B107.

[0073] The sliding ring block 101 is movably disposed within the straight groove 34. The sliding ring block 101 and the straight groove 34 are elastically connected by a spring G102. The plug rod 103 is fixedly disposed on the sliding ring block 101. The radial ends of several plug rods 103 are respectively plugged into several plug grooves 90. The functional ring block 104 is sleeved on the head of the straight column 3. The functional ring block 104 and the mounting base 2 are slidably connected by several sliding rods B105. A lead screw 106 is threadedly connected to the functional ring block 104. The motor B107 is fixedly disposed on the mounting groove 21. The tail end of the lead screw 106 passes through the mounting groove 21 and is fixedly connected to the output shaft of the motor B107.

[0074] The inner edge surface of the functional ring block 104 is provided with a ring groove 108, the eccentric end of each of the plurality of plug-in rods 103 is movably connected with the ring groove 108, and the ring groove 108 is provided with a triangular groove 109 on one side in a ring-shaped equidistant structure, and each of the plurality of plug-in rods 103 is movably matched with each of the triangular grooves 109. Through the mechanism design of the plug-in mechanism 10, the sliding ring block 101 cannot rotate, so that the output shaft of the motor B107 is controlled to rotate by an external control mechanism, the sliding ring block 101 slides relative to the slide rod B105, when the eccentric end of the plug-in rod 103 is located on the ring groove 108, the centripetal end of the plug-in rod 103 is plugged into the plug-in groove 90, at this time, the rotation of the adjusting long shaft 92 can drive the straight column 3 to rotate for laser welding of the square tube, the eccentric end of the plug-in rod 103 is movable relative to the ring groove 108, when the eccentric end of the plug-in rod 103 is located in the triangular groove 109, under the elastic force of the spring G102, the centripetal end of the plug-in rod 103 is separated from the plug-in groove 90, at this time, when the adjusting long shaft 92 rotates, the straight column 3 cannot rotate under the limiting force of the plug-in rod 103, and the adjusting long shaft 92 is used for adjusting the positioning mechanism A6 and the positioning mechanism B7.

[0075] Working principle; the embodiment provides a component transmission device for machine tool laser welding, in use, step 1; initial state preparation;

[0076] The device is in a natural state, and the section columns 4 are arranged in a straight line Figure 2 State;

[0077] The plug-in rod 103 of the plug-in mechanism 10 is separated from the plug-in groove 90 of the adjusting long shaft 92, the motor B107 controls the functional ring block 104 to make the plug-in rod 103 clamped into the triangular groove 109;

[0078] Step 2; first square tube positioning and fixing;

[0079] The first square tube to be welded is sleeved on the straight column 3, the end portion of the square tube contacts the inclined guide surface of the slide bar 84 of the elastic mechanism 8, the slide bar 84 is pushed to compress the spring F85, and initial axial positioning is realized;

[0080] The square tube continues to push the slide plate 83 to compress the spring E82, after the hand is released, the spring E82 rebounds, the end surface of the square tube is tightly attached to the partial spherical block 58 of the hinged assembly B5, and it is ensured that the inclined surfaces to be welded are aligned;

[0081] The partial spherical block 58 is extruded to drive the slide rod A56 to rotate, so that the positions of the plurality of section columns 4 and the plurality of hinged assemblies A43 are changed, and a right angle is formed with the straight column 3, thereby facilitating positioning and fixing of another square tube to be welded.

[0082] The first square tube is fixed;

[0083] The motor A91 is started to rotate the adjusting long shaft 92 by 180 degrees;

[0084] Positioning mechanism A6 is activated, ball A67 moves along the half-thread guide groove A931, pushing two ring seats A62 closer, driving the positioning block A63 eccentrically outward through the X-shaped connecting rod unit A66, and the elastic pad A60 clamps the first square tube;

[0085] Positioning mechanism B7 is not in action, ball B77 idles in the semicircular guide groove B952, and elastic pad B70 remains in the retracted state;

[0086] Step 3: Positioning and fixing the second square tube;

[0087] Install the second square tube;

[0088] Put the second square tube into the section column 4 which has been in right angle shape, so that its welding bevel is butt jointed with the first square tube;

[0089] Clamp the second square tube;

[0090] Motor A91 continues to rotate to adjust the long shaft 92 by 180°;

[0091] Positioning mechanism A6 is locked; ball A67 enters the semicircular guide groove A932, and elastic pad A60 remains in the clamped state;

[0092] Positioning mechanism B7 is activated; ball B77 moves along the half-thread guide groove B951, pushing ring seat B72 closer, and driving elastic pad B70 to clamp the second square tube through connecting rod unit B76;

[0093] At this time, the two square tubes are precisely butt jointed into a right angle, and the welding surface is in close contact;

[0094] Step 4: Laser welding is performed

[0095] Switch to welding mode;

[0096] Control motor B107 to rotate screw rod 106, so that function ring block 104 moves, and plug-in rod 103 slides into ring groove 108 from triangular groove 109, and its centripetal end is inserted into plug-in slot 90 of adjusting long shaft 92.

[0097] At this time, the adjusting long shaft 92 is linked with the straight column 3.

[0098] Rotary welding;

[0099] Motor A91 drives the straight column 3 and section column 4 to rotate as a whole, so that the square tube weld position is aligned with the laser welding mechanism 12;

[0100] Three-axis moving mechanism 11 drives the laser welding head to move along the weld, completing the welding;

[0101] Step 5: Reset and take out the welding part

[0102] Release the clamping;

[0103] The motor A91 reverses 360°, and the elastic pads A / B of the positioning mechanisms A6 and B7 retract into the eccentric grooves A / B.

[0104] The torsion springs A433 and B57 release the elastic potential energy, the section column 4 returns to the straight state, and the partial spherical blocks 58 of the articulated assembly B5 are reset;

[0105] The welding part is taken out;

[0106] The right-angle square tube welded is axially pulled out, the equipment returns to the initial state, and is ready for the next welding.

[0107] The embodiments of the present application are disclosed, but are not limited to the embodiments, and the ordinary skilled in the art can easily understand the spirit of the present application according to the above embodiments, and make different inferences and changes, as long as they do not deviate from the spirit of the present application, and are within the protection scope of the present application.

Claims

1. A machine tool laser welding component transmission device, comprising a base, a three-axis movement mechanism is fixedly arranged at the top end of the base, a laser welding mechanism is fixedly arranged at the movable end of the three-axis movement mechanism, an installation seat is arranged below the laser welding mechanism, and the installation seat is fixedly connected with the base, characterized in that, The mounting seat is rotationally connected with a straight column, the straight column head side is provided with a plurality of sections, adjacent two sections are connected through two symmetrical hinge assemblies A, the straight column and the corresponding section are connected through two symmetrical hinge assemblies B, the straight column is provided with elastic mechanisms and two positioning mechanisms A, the section is provided with a positioning mechanism B, the mounting seat is provided with a rotating mechanism and a plug-in mechanism; The rotating mechanism comprises a motor A, an adjusting long shaft for adjusting the two positioning mechanisms A and a plurality of adjusting short shafts for adjusting the positioning mechanism B; The motor A is fixedly arranged at the tail end of the mounting seat, the adjusting long shaft is rotationally arranged on the straight column, the tail end of the adjusting long shaft penetrates through the mounting seat and is fixedly connected with the output shaft of the motor A, the head of the adjusting long shaft is annularly and equidistantly provided with a plurality of plug-in grooves, and a plurality of adjusting short shafts are respectively rotationally arranged on a plurality of sections; adjacent two adjusting short shafts are connected through a universal joint A, and the adjusting long shaft and the corresponding adjusting short shaft are connected through a universal joint B; The plug-in mechanism comprises a functional ring block and a plurality of plug-in rods, the functional ring block is sleeved on the head of the straight column, an annular groove is formed in the inner edge surface of the functional ring block, the eccentric ends of a plurality of plug-in rods are movably connected with the annular groove, one side of the annular groove is annularly and equidistantly provided with a triangular groove, a plurality of plug-in rods are movably matched with a plurality of triangular grooves, and the centripetal ends of a plurality of plug-in rods are respectively plug-in matched with a plurality of plug-in grooves.

2. Machine tool laser welding component drive according to claim 1, characterized in that The head of the straight column is annularly and equidistantly provided with four eccentric sliding grooves, the inner side of the straight column is provided with a movable groove A at positions opposite to the two sides of the eccentric sliding groove, four eccentric grooves A are communicatively arranged on the movable groove A, the tail of the straight column is annularly and equidistantly provided with a plurality of straight grooves, and a plurality of thread grooves are formed in the surface of the straight column at positions on the head side of the straight grooves.

3. Machine tool laser welding component drive according to claim 2, characterized in that The section is provided with a movable groove B, four eccentric grooves B are communicatively arranged on the movable groove B, the hinge assembly A comprises two hinge plates A, the two hinge plates A are respectively fixedly connected with two corresponding sections, the two hinge plates A are rotationally connected through a rotating rod A, the opposite ends of the two hinge plates A are provided with rotating grooves at positions opposite to the rotating rod A, and the two rotating grooves are elastically connected through a torsion spring A.

4. Machine tool laser welding component drive according to claim 3, characterized in that The hinge assembly B comprises two hinge plates B, the two hinge plates B are respectively fixedly connected with the corresponding section and the straight column, the two hinge plates B are rotationally connected through a rotating rod B, the rotating rod B is provided with a sliding groove, two hinge plates B at both ends are fixedly provided with column bodies, the column bodies are provided with movable circular grooves, movable blocks are movably arranged on the movable circular grooves, the bottom ends of the movable blocks are fixedly provided with sliding rods A, the sliding rods A are slidably connected with the sliding grooves, the movable blocks and the movable circular grooves are elastically connected through torsion springs B, the top ends of the movable blocks penetrate through the column bodies and are fixedly provided with partial ball blocks, and the partial ball blocks are arranged in an inclined structure; The torsion spring B is in a circular truncated cone structure.

5. Machine tool laser welding component drive according to claim 4, characterized in that The positioning mechanism A comprises a slide rod set A, two ring seats A and four positioning blocks A, the slide rod set A is fixedly arranged on the movable groove A, two ring seats A are slidably arranged on the two sides of the slide rod set A, and four positioning blocks A are arranged on the four eccentric grooves A.

6. Machine tool laser welding component drive according to claim 5, characterized in that The positioning mechanism B comprises a slide rod set B, two ring seats B and four positioning blocks B, the slide rod set B is fixedly arranged on the movable groove B, two ring seats B are slidably arranged on the two sides of the slide rod set B, and four positioning blocks B are arranged on the four eccentric grooves B.

7. Machine tool laser welding component drive according to claim 6, characterized in that The slide seat A and the limiting sliding groove A are elastically connected through a spring C, the slide seat B and the limiting sliding groove B are elastically connected through a spring D, and the spring C and the spring D are both in the shape of a sandglass.

8. Machine tool laser welding component drive according to claim 7, characterized in that The elastic mechanism comprises a threaded plate, a sliding plate and four slide bars, the threaded plate is threadedly connected to the threaded groove, the sliding plate is arranged on the head side of the threaded plate and is slidably connected with the straight column, the threaded plate and the sliding plate are elastically connected through a spring E, and the slide bars are slidably arranged in the eccentric sliding grooves and are elastically connected with the eccentric sliding grooves through at least two springs F.

9. Machine tool laser welding component drive according to claim 8, characterized in that The adjusting long shaft is provided with adjusting guide grooves A at positions opposite to the two movable grooves A, the adjusting guide grooves A comprise two half-threaded guide grooves A arranged in a symmetrical structure, half-circle guide grooves A are communicatively arranged at the proximal ends of the two half-threaded guide grooves A, and the half-threaded guide grooves A and the half-circle guide grooves A are movably matched with corresponding ball blocks A. The adjusting short shaft is provided with adjusting guide grooves B, the adjusting guide grooves B comprise two half-threaded guide grooves B arranged in a symmetrical structure, half-circle guide grooves B are arranged at the distal ends of the two half-threaded guide grooves B, and the half-threaded guide grooves B and the half-circle guide grooves B are movably matched with corresponding ball blocks B. The half-threaded guide grooves A and the half-threaded guide grooves B are arranged alternately.

10. Machine tool laser welding component drive according to claim 9, characterized in that The plug-in mechanism further comprises a plurality of sliding ring blocks and a motor B, the sliding ring blocks are movably arranged in the straight grooves, the sliding ring blocks and the straight grooves are elastically connected through springs G, the plug-in rods are fixedly arranged on the sliding ring blocks, the functional ring blocks and the mounting seats are slidably connected through a plurality of slide rods B, the functional ring blocks are threadedly connected with lead screws, the mounting seats are provided with mounting grooves, the motor B is fixedly arranged in the mounting grooves, the lead screws are inserted into the mounting grooves and are fixedly connected with output shafts of the motor B.

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