An armrest frame welding device for sofa production

Abstract

The present invention discloses an armrest frame welding device for sofa production, which relates to the field of welding technology. The device comprises a welding frame, two fixture groups, a first welding robot and a second welding robot. The fixture group comprises a fixture frame, a mobile frame A, a mobile frame B and a mobile frame C. The middle part of the fixture frame is hollowed out. The mobile frame A and the mobile frame C are movably arranged on the fixture frame. The mobile frame B is fixed between the mobile frame A and the mobile frame C. The mobile frames A, B and C are each provided with two groups of mobile fixtures and one group of fixed fixtures. The two ends of one fixture group are rotatably arranged on the welding frame. The other fixture group is arranged below one fixture group and can move up and down on the welding frame. The armrest frame welding device can realize the welding of armrest frames of different sizes or irregular shapes and has a wide range of adaptability.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and in particular to an armrest frame welding device for sofa production. Background Art

[0002] The frames of modern sofas are mostly welded from stainless steel. The armrest frame is generally a regular or irregular quadrilateral shape, including two symmetrical inner and outer frames and four support rods supported between the inner and outer frames. When the inner and outer frames are regular rectangles, the armrest frame is a regular rectangular parallelepiped shape. When the inner and outer frames are irregular rectangles, for example, when one side of the frame has a curvature, the armrest frame is an irregular quadrilateral shape.

[0003] At present, the existing sofa armrest frames are usually welded manually. First, the four frame rods are placed on the clamp and welded into the inner frame and the outer frame. Then the inner frame, the outer frame and the support rod are fixed on the clamp. Finally, the support rod is welded between the inner frame and the outer frame. The welding process requires repeated manual positioning, which has low welding efficiency. Moreover, the position of the existing clamp is fixed and cannot adapt to armrest frames of different sizes or irregular shapes, making it difficult to meet personalized customization requirements. Summary of the Invention

[0004] In view of the defects of the above-mentioned prior art, the purpose of the present invention is to provide an armrest frame welding device for sofa production, which solves the problems of low welding efficiency of sofa armrest frames and the inability of the fixture to adapt to different armrest frames.

[0005] The purpose of the present invention is achieved by adopting the following technical solutions:

[0006] A sofa armrest frame welding device comprises a welding frame, two fixture groups, a first welding robot and a second welding robot, the fixture group comprises a fixture frame, a mobile frame A, a mobile frame B and a mobile frame C, the middle part of the fixture frame is hollowed out, the mobile frame A and the mobile frame C are movably arranged on the fixture frame and the moving direction is parallel to the length direction of the fixture frame, the mobile frame B is fixed in the middle part of the fixture frame and arranged between the mobile frame A and the mobile frame C, the mobile frame A, the mobile frame B and the mobile frame C are each provided with two groups of mobile fixtures and a group of fixed fixtures fixed between the two mobile fixtures, the moving direction of the mobile fixture is parallel to the width direction of the fixture frame, the two ends of one fixture group are rotatably arranged on the welding frame and its mobile fixture is used to clamp the frame rod and the support rod, the other fixture group is arranged below one fixture group and can move up and down on the welding frame and its mobile fixture is used to clamp the frame rod, the first welding robot and the second welding robot are respectively arranged on both sides of the welding frame.

[0007] Furthermore, the two clamp groups are respectively a first clamp group and a second clamp group, both ends of the first clamp group are rotatably arranged on the welding frame, and the second clamp group is arranged below the first clamp group and can move up and down on the welding frame;

[0008] The first fixture group includes a first fixture frame, a first mobile frame A, a first mobile frame B and a first mobile frame C. The middle part of the first fixture frame is hollowed out and both ends are rotatably provided on the welding frame. The first mobile frame A and the first mobile frame C are movably provided on the first fixture frame and the moving direction is parallel to the length direction of the first fixture frame. The first mobile frame B is fixed at the middle part of the first fixture frame and is provided between the first mobile frame A and the first mobile frame C. The first mobile frame A, the first mobile frame B and the first mobile frame C are each provided with two groups of first mobile fixtures and a group of first fixed fixtures fixed between the two first mobile fixtures. The moving direction of the first mobile fixture is parallel to the width direction of the first fixture frame.

[0009] The second fixture group includes a second fixture frame, a second movable frame A, a second movable frame B and a second movable frame C. The middle part of the second fixture frame is hollow and can move up and down on the welding frame. The second movable frame A and the second movable frame C are movably arranged on the second fixture frame and the moving direction is parallel to the length direction of the second fixture frame. The second movable frame B is fixed in the middle part of the second fixture frame and is arranged between the second movable frame A and the second movable frame C. The second movable frame A, the second movable frame B and the second movable frame C are each provided with two groups of second movable fixtures and a group of second fixed fixtures fixed between the two second movable fixtures. The moving direction of the second movable fixture is parallel to the width direction of the second fixture frame.

[0010] Furthermore, the first movable fixture includes a first movable plate, a first cylinder clamp A, a first cylinder push piece and a first cushion block, the first movable plate is movable on the first movable frame A, the first movable frame B and the first movable frame C, a through hole A for inserting the support rod is opened in the middle of the first movable plate, the first movable frame A, the first movable frame B and the first movable frame C are all opened with a through hole B corresponding to the position of the through hole A above and below, the first cylinder clamp A on the first movable frame A and the first movable frame C is used to respectively clamp the two frame rods to be welded together, the cylinder barrel of the first cylinder push piece is fixed on the first movable plate, the piston end of the first cylinder push piece is horizontally retracted and an extrusion block is fixed on the end thereof, the first cushion block A is fixed at the position of the first movable plate where the first cylinder clamp A and the first cylinder push piece are not set, the first cushion block A avoids the through hole A, and the height of the first cushion block A is the same as the height of the first cylinder push piece;

[0011] The first fixing fixture includes a first fixing plate, a first cylinder clamp B and a first pad B. The first fixing plate is fixed to the middle of the first mobile frame A, the first mobile frame B and the first mobile frame C. The first cylinder clamp B is used to clamp the frame rod. The first pad B is fixed to the position on the first fixing plate where the first cylinder clamp B is not set.

[0012] Furthermore, the first cylinder clamp A and the first cylinder clamp B have the same structure, including a first cylinder A, a first rotating rod, a first pressure rod and a first hinge rod. The first cylinder A is fixed in position and the piston end is extended and retracted upward. Its cylinder barrel is higher than the first pad A and the first pad B. A first connecting block is fixed on the top of its cylinder barrel, and the top of its piston end is rotatably connected to one end of the first rotating rod. The first pressure rod is fixed to the bottom of the other end of the first rotating rod. One end of the first hinge rod is rotatably connected to the first rotating rod and the other end is rotatably connected to the first connecting block.

[0013] Furthermore, a first electric screw and a first sliding rod are provided on both sides of the first clamp frame, and the first mobile frame A and the first mobile frame C are respectively slidably connected to the first electric screw on one side and the first sliding rod on the other side; two second electric screws are provided on the first mobile frame A, the first mobile frame B and the first mobile frame C, and the two first mobile clamps are respectively slidably connected to the two second electric screws.

[0014] Furthermore, the second movable fixture includes a second movable plate and a second cylinder clamp A, the second movable plate is movable on the second movable frame A, the second movable frame B and the second movable frame C, the second cylinder clamp A on the second movable frame A and the second movable frame C is used to respectively clamp the two frame rods to be welded together, the second cylinder clamp A includes a second cylinder A, a second rotating rod, a second pressure rod and a second hinge rod, the second cylinder A is fixed to the second movable plate and the piston end thereof is extended and retracted upward, the cylinder barrel thereof is embedded in the second movable plate and protrudes from the upper surface of the second movable plate, the top of the cylinder barrel is fixed with a second connecting block, the top of the piston end thereof is rotatably connected to one end of the second rotating rod, the second pressure rod is fixed to the bottom of the other end of the second rotating rod, one end of the second hinge rod is rotatably connected to the second rotating rod and the other end is rotatably connected to the second connecting block;

[0015] The second fixing fixture includes a second fixing plate and a second cylinder clamp B, the second fixing plate is fixed to the middle of the first mobile frame A, the first mobile frame B or the first mobile frame C, the second cylinder clamp B is used to clamp the frame rod, and the structure of the second cylinder clamp B is the same as that of the second cylinder clamp A.

[0016] Furthermore, a third electric screw and a second sliding rod are provided on both sides of the second clamp frame, and the second mobile frame A and the second mobile frame C are respectively slidably connected to the third electric screw on one side and the second sliding rod on the other side; the second mobile frame A, the second mobile frame B and the second mobile frame C are each provided with two fourth electric screws, and the two second mobile clamps are respectively slidably connected to the two fourth electric screws.

[0017] Furthermore, the welding frame includes a base and four supporting legs, the four supporting legs are fixed on the welding frame, a supporting plate is fixed to the upper part of each of the supporting legs, the two ends of the first clamp frame are rotatably provided on the two supporting plates, the inner side of the supporting legs is provided with a slide rail for the sliding of the second clamp frame, two third cylinders are fixed on the base, the piston ends of the two third cylinders are respectively fixedly connected to the two sides of the second clamp frame and drive the second clamp frame to move along the slide rail.

[0018] Furthermore, the second fixture frame includes two second support frames arranged in parallel and a first connecting frame, the first connecting frame is fixed to the same end of the two second support frames, which is marked as end A, and the other end of the two second support frames is marked as end B;

[0019] Two groups of movable conveying groups and one group of fixed conveying groups are fixed on the base, and the two groups of movable conveying groups are respectively arranged on both sides of the second mobile frame B. The movable conveying group includes a first conveying frame and a plurality of first conveying rollers arranged on the first conveying frame. The movable conveying group can be accommodated in the gap between the second mobile frame A and the second mobile frame B and can be accommodated in the gap between the second mobile frame C and the second mobile frame B. The fixed conveying group includes a second conveying frame and a plurality of second conveying rollers arranged on the second conveying frame. The fixed conveying group is arranged at the B end and extends out of the interior of the welding frame.

[0020] Furthermore, fixed blocks are fixed on both sides of the first conveying frame, and threaded holes are provided on the fixed blocks; fixed rods are fixed on both sides of the welding frame, and several threaded holes are provided on the fixed rods. The fixed blocks can be fixed to the fixed rods by screws.

[0021] The beneficial effects of the present invention are:

[0022] The present invention arranges two clamp groups to weld two armrest frames respectively, and then completes the welding of support rods through the arrangement of rotation and up and down movement, thereby realizing the welding and forming of the sofa armrest frame; by arranging a movable frame and a movable clamp, the welding of armrest frames of different sizes or irregular shapes can be realized, thereby meeting modern personalized customization needs; by arranging a conveying group, the conveyance of the sofa armrest frame can be realized, thereby avoiding collision and achieving high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of an armrest frame welding device for sofa production according to the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the present invention without the welding robot;

[0025] Figure 3 It is a structural schematic diagram of the first clamp group in the present invention;

[0026] Figure 4 It is a structural schematic diagram of the first movable frame A and the clamp combination in the present invention;

[0027] Figure 5 It is a structural diagram of the first movable frame B and the clamp combination in the present invention;

[0028] Figure 6 It is a structural diagram of the first movable frame C and the clamp combination in the present invention;

[0029] Figure 7 It is a structural schematic diagram of the second clamp group in the present invention;

[0030] Figure 8This is a structural diagram of the first movable fixture in the present invention;

[0031] Figure 9 is another structural schematic diagram of the first movable fixture in the present invention;

[0032] Figure 10 It is a structural schematic diagram of the first mobile frame A in the present invention;

[0033] Figure 11 It is a structural schematic diagram of the first fixing fixture in the present invention;

[0034] Figure 12 It is a structural schematic diagram of the first cylinder clamp A in the present invention;

[0035] Figure 13 It is a structural schematic diagram of the second movable fixture in the present invention;

[0036] Figure 14 is a schematic structural diagram of the second fixing fixture in the present invention;

[0037] Figure 15 It is a structural diagram of the combination of the welding frame and the conveying group in the present invention.

[0038] In the figure: 1. Welding frame; 11. Base; 12. Support legs; 13. Support plate; 14. Slide rail; 2. Fixture group; 21. Fixture frame; 22. Mobile frame A; 23. Mobile frame B; 24. Mobile frame C; 25. Mobile fixture; 26. Fixed fixture; 3. First welding robot; 4. Second welding robot; 5. First fixture group; 51. First fixture frame; 52. First mobile frame A; 53. First mobile frame B; 54. First mobile frame C; 55. First Mobile fixture; 551, first mobile plate; 552, first cylinder clamp A; 553, first cylinder pusher; 554, first cushion A; 555, extrusion block; 556, through hole A; 557, through hole B; 56, first fixed fixture; 561, first fixed plate; 562, first cylinder clamp B; 563, first cushion B; 57, first electric screw; 58, first slide bar; 59, second electric screw; 6, second fixture assembly; 61, second fixture frame; 61 1. Second support frame; 612. First connecting frame; 62. Second mobile frame A; 63. Second mobile frame B; 64. Second mobile frame C; 65. Second mobile fixture; 651. Second mobile plate; 652. Second cylinder fixture A; 6521. Second cylinder A; 6522. Second rotating rod; 6523. Second pressure rod; 6524. Second hinge rod; 6525. Second connecting block; 66. Second fixing fixture; 661. Second fixing plate; 662. Second cylinder Cylinder clamp B; 67, third electric screw; 68, second sliding rod; 69, fourth electric screw; 71, first cylinder A; 72, first rotating rod; 73, first pressure rod; 74, first hinge rod; 75, first connecting block; 8, third cylinder; 9, movable conveying group; 91, first conveying frame; 92, first conveying roller; 10, fixed conveying group; 101, second conveying frame; 102, second conveying roller; 93, fixed block; 94, threaded hole; 110, fixed rod. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and beneficial effects solved by the invention more clearly understood, the invention is further described below with reference to the accompanying drawings and embodiments.

[0040] Example 1

[0041] like Figure 1As shown, this embodiment provides a sofa production armrest frame welding device, including a welding frame 1, two fixture groups 2, a first welding robot 3 and a second welding robot 4, the fixture group 2 includes a fixture frame 21, a mobile frame A22, a mobile frame B23 and a mobile frame C24, the middle of the fixture frame 21 is hollowed out, the mobile frame A22 and the mobile frame C24 are movably arranged on the fixture frame 21 and the moving direction is parallel to the length direction of the fixture frame 21, the mobile frame B23 is fixed in the middle of the fixture frame 21 and is arranged between the mobile frame A22 and the mobile frame C24, the mobile frame A22, the mobile frame B23 and the mobile frame C24 are fixed in the middle of the fixture frame 21 and are arranged between the mobile frame A22 and the mobile frame C24, Both the movable frame B23 and the mobile frame C24 are provided with two groups of mobile clamps 25 and a group of fixed clamps 26 fixed between the two mobile clamps 25. The moving direction of the mobile clamp 25 is parallel to the width direction of the clamp frame 21. The two ends of a clamp group 2 are rotatably provided on the welding frame 1 and its mobile clamp 25 is used to clamp the frame rod and the support rod. The other clamp group 2 is provided below one clamp group 2 and can move up and down on the welding frame 1 and its mobile clamp 25 is used to clamp the frame rod. The first welding robot 3 and the second welding robot 4 are respectively provided on both sides of the welding frame 1.

[0042] Each fixture group 2 has six groups of mobile fixtures 25 and three groups of fixed fixtures 26. According to the specific shape of the frame, the mobile frame A22, the mobile frame C24 and the mobile fixtures 25 on the mobile frames A22, B23 and C24 are moved respectively. All the mobile fixtures 25 are moved to the appropriate position. Then the fixed fixture 26 and the mobile fixture 25 on the mobile frame A22 clamp and fix a frame rod together. The fixed fixture 26 and the mobile fixture 25 on the mobile frame C24 clamp and fix a frame rod together. The mobile fixtures 25 on the mobile frames A22, B23 and C24 clamp and fix the frame rod respectively. And fix the two frame rods. When the frame is a regular rectangle, the mobile clamps 25 on the same side of the mobile frame A22, the mobile frame B23 and the mobile frame C24 are in a straight line. When the frame is an irregular quadrilateral, the mobile clamps 25 on the same side of the mobile frame A22, the mobile frame B23 and the mobile frame C24 are adjusted according to the shape of the frame rod, so that the three mobile clamps 25 can clamp the irregular-shaped frame rod at the same time. Therefore, the clamp group 2 can clamp handrail frame rods of different sizes or irregular shapes, and is suitable for welding handrail frames of more types and sizes, meeting modern personalized customization needs.

[0043] The first welding robot 3 and the second welding robot 4 weld the frames on the two clamp groups 2 respectively. After the two quadrilateral frames are welded, the support rod is welded to one of the frames. Then, the upper clamp group 2 is rotated, and the lower clamp group 2 is moved upward, and the support rod is placed between the two frames, and then welding is performed. When the frames are regular rectangles, the positions of the movable clamps 25 on the two clamp groups 2 correspond to each other up and down. When the upper clamp group 2 is rotated to face downward, the symmetry of the positions of the two frames can still be ensured. When the frames are irregular quadrilaterals, the movable clamps 25 on the two clamp groups 2 need to be mirrored to ensure the symmetry of the positions of the two frames when the upper clamp group 2 is rotated to face downward.

[0044] Example 2

[0045] like Figures 1 to 15 As shown, this embodiment provides an armrest frame welding device for sofa production, including a welding frame 1, a first clamp group 5, a second clamp group 6, a first welding robot 3 and a second welding robot 4. The two ends of the first clamp group 5 are rotatably provided on the welding frame 1, the second clamp group 6 is provided below the first clamp group 5 and can move up and down on the welding frame 1, the first welding robot 3 and the second welding robot 4 are used to weld the frame on the two clamp groups 2 and weld the support rod to the frame, and are preferably provided on both sides of the welding frame 1.

[0046] like Figure 3 As shown, the first fixture group 5 includes a first fixture frame 51, a first movable frame A52, a first movable frame B53 and a first movable frame C54. The middle part of the first fixture frame 51 is hollowed out and both ends are rotatably provided on the welding frame 1. The first movable frame A52 and the first movable frame C54 are movably provided on the first fixture frame 51 and the moving direction is parallel to the length direction of the first fixture frame 51. The first movable frame B53 is fixed in the middle part of the first fixture frame 51 and is provided between the first movable frame A52 and the first movable frame C54. The first movable frame A52, the first movable frame B53 and the first movable frame C54 are each provided with two groups of first movable fixtures 55 and a group of first fixed fixtures 56 fixed between the two first movable fixtures 55. The moving direction of the first movable fixture 55 is parallel to the width direction of the first fixture frame 51.

[0047] Specifically, the first clamp frame 51 has a quadrilateral structure with rotating shafts at both ends. The first clamp frame 51 is rotatably connected to the welding frame 1 through two rotating shafts, one of which is driven by a rotating motor, and the rotating motor can be fixed on the welding frame 1.

[0048] refer to Figure 3 , the first mobile frame B53 is fixed in position, the first mobile frame A52 and the first mobile frame C54 can move relative to the first mobile frame B53, refer to Figures 4-6The first fixed clamp 56 is fixed in position, and the two groups of first movable clamps 55 move relative to the first fixed clamp 56, thereby adjusting the distance between the two first movable clamps 55 and between the first movable clamp 55 and the first fixed clamp 56, thereby fixing the four frame rods to meet the clamping distance.

[0049] refer to Figure 7 The second fixture group 6 includes a second fixture frame 61, a second movable frame A62, a second movable frame B63 and a second movable frame C64. The middle part of the second fixture frame 61 is hollow and can move up and down on the welding frame 1. The second movable frame A62 and the second movable frame C64 are movably provided on the second fixture frame 61 and the moving direction is parallel to the length direction of the second fixture frame 61. The second movable frame B63 is fixed in the middle part of the second fixture frame 61 and is provided between the second movable frame A62 and the second movable frame C64. The second movable frame A62, the second movable frame B63 and the second movable frame C64 are each provided with two groups of second movable fixtures 65 and a group of second fixed fixtures 66 fixed between the two second movable fixtures 65. The moving direction of the second movable fixture 65 is parallel to the width direction of the second fixture frame 61.

[0050] The first fixing clamp 56 on the first movable frame B53 and the second fixing clamp 66 on the second movable frame B63 can be used to clamp the reinforcement rod in the frame and weld the reinforcement rod in the frame. Of course, not all handrail frames require welding reinforcement rods, and welding can be performed according to actual conditions. At the same time, the clamping direction of the first fixing clamp 56 and the first fixing clamp 56 in this embodiment is fixed, so only reinforcement rods at specific angles can be welded.

[0051] refer to Figures 8-10 The first movable fixture 55 includes a first movable plate 551, a first cylinder clamp A552, a first cylinder pusher 553 and a first cushion block 554. The first movable plate 551 is movable on the first movable frame A52, the first movable frame B53 and the first movable frame C54. A through hole A556 for inserting a support rod is opened in the middle of the first movable plate 551. A through hole B557 corresponding to the position of the through hole A556 is opened on the first movable frame A52, the first movable frame B53 and the first movable frame C54. The first cylinder clamp A552 is fixed on the first movable plate 551. 1, the first cylinder clamp A552 on the first mobile frame A52 and the first mobile frame C54 is used to respectively clamp the two frame rods to be welded together, the cylinder of the first cylinder pusher 553 is fixed on the first mobile plate 551, the piston end thereof is horizontally retracted and the end is fixed with an extrusion block 555, and a first cushion block A554 is fixed at a position on the first mobile plate 551 where the first cylinder clamp A552 and the first cylinder pusher 553 are not provided. The first cushion block A554 avoids the through hole A556, and the height of the first cushion block A554 is the same as that of the first cylinder pusher 553.

[0052] refer to Figure 11 The first fixing fixture 56 includes a first fixing plate 561, a first cylinder clamp B562 and a first cushion block B563. The first fixing plate 561 is fixed to the middle of the first movable frame A52, the first movable frame B53 and the first movable frame C54. The first cylinder clamp B562 is used to clamp the frame rod. The first cushion block B563 is fixed on the position of the first fixing plate 561 where the first cylinder clamp B562 is not set.

[0053] Each first movable fixture 55 is provided with two first cylinder clamps A552, and the pressing direction of the first cylinder clamps A552 is arranged according to the position of the first movable fixture 55. For example, the two first cylinder clamps A552 on each first movable fixture 55 on the first movable frame A52 and the first movable frame C54 are in an orthogonal pressing state, respectively fixing the two frame rods to be welded together, and the first cylinder pushers 553 thereon are at the four corners, cooperating with the first pad 554 to squeeze the support rod through the through hole A556.

[0054] Each first fixed fixture 56 is equipped with two first cylinder clamps B562. The two first cylinder clamps B562 on the first fixed fixtures 56 on the first movable frame A52 and first movable frame C54 are in a parallel, pressing state, securing the middle portion of the frame rod. The height of the first spacer A554 is the same as that of the first cylinder pusher 553, ensuring a stable placement of the frame rod on the first movable fixture 55.

[0055] refer to Figure 12 The first cylinder clamp A552 and the first cylinder clamp B562 have the same structure, including a first cylinder A71, a first rotating rod 72, a first pressure rod 73 and a first hinge rod 74. The first cylinder A71 is fixed in position and the piston end is extended and retracted upward. The top of its cylinder barrel is fixed with a first connecting block 75, and the top of its piston end is rotatably connected to one end of the first rotating rod 72. The first pressure rod 73 is fixed to the bottom of the other end of the first rotating rod 72. One end of the first hinge rod 74 is rotatably connected to the first rotating rod 72 and the other end is rotatably connected to the first connecting block 75. Through the above structure, the first rotating rod 72 and the first pressure rod 73 can be rotated and lifted without affecting the removal of the frame. The cylinder barrel of the first cylinder A71 is higher than the first cushion block A554 and the first cushion block B563, so the frame rod can be confined between the two cylinder barrels, further facilitating clamping and fixing.

[0056] refer to Figure 3, a first electric screw 57 and a first sliding rod 58 are provided on both sides of the first clamp frame 51, and the first movable frame A52 and the first movable frame C54 are respectively slidably connected to the first electric screw 57 on one side and the first sliding rod 58 on the other side; the first movable frame A52, the first movable frame B53 and the first movable frame C54 are each provided with two second electric screws 59, and the two first movable clamps 55 are respectively slidably connected to the two second electric screws 59.

[0057] refer to Figure 13 The second movable fixture 65 includes a second movable plate 651 and a second cylinder clamp A652. The second movable plate 651 is movable on the second movable frame A62, the second movable frame B63 and the second movable frame C64. The second cylinder clamp A652 on the second movable frame A62 and the second movable frame C64 is used to respectively clamp the two frame rods to be welded together. The second cylinder clamp A652 includes a second cylinder A6521, a second rotating rod 6522, a second pressing rod 6523 and a second hinge rod 6524. Cylinder A6521 is fixed on the second movable plate 651 and its piston end is extended and retracted upward. Its cylinder is embedded in the second movable plate 651 and protrudes from the upper surface of the second movable plate 651. A second connecting block 6525 is fixed to the top of its cylinder. The top of its piston end is rotatably connected to one end of the second rotating rod 6522. The second pressure rod 6523 is fixed to the bottom of the other end of the second rotating rod 6522. One end of the second hinge rod 6524 is rotatably connected to the second rotating rod 6522 and the other end is rotatably connected to the second connecting block 6525; refer to Figure 14 The second fixing fixture 66 includes a second fixing plate 661 and a second cylinder clamp B662. The second fixing plate 661 is fixed in the middle of the first movable frame A52, the first movable frame B53 and the first movable frame C54. The second cylinder clamp B662 is used to clamp the frame rod. The structure of the second cylinder clamp B662 is the same as that of the second cylinder clamp A652.

[0058] refer to Figure 7 , a third electric screw 67 and a second sliding rod 68 are provided on both sides of the second clamp frame 61, and the second movable frame A62 and the second movable frame C64 are respectively slidably connected to the third electric screw 67 on one side and the second sliding rod 68 on the other side; the second movable frame A62, the second movable frame B63 and the second movable frame C64 are respectively provided with two fourth electric screws 69, and the two second movable clamps 65 are respectively slidably connected to the two fourth electric screws 69.

[0059] refer to Figure 2The welding frame 1 includes a base 11 and four supporting legs 12. The four supporting legs 12 are fixed on the welding frame 1. A supporting plate 13 is fixed to the upper part of each supporting leg 12. The two ends of the first clamp frame 51 are rotatably provided on the two supporting plates 13. The inner side of the supporting leg 12 is provided with a slide rail 14 for the second clamp frame 61 to slide. Two third cylinders 8 are fixed on the base 11. The piston ends of the two third cylinders 8 are respectively fixedly connected to the two sides of the second clamp frame 61 and drive the second clamp frame 61 to move along the slide rail 14.

[0060] refer to Figure 7 The second fixture frame 61 includes two parallel second support frames 611 and a first connecting frame 612. The first connecting frame 612 is fixed to the same end of the two second support frames 611, which is marked as end A, and the other end of the two second support frames 611 is marked as end B.

[0061] refer to Figure 15 Two groups of movable conveying groups 9 and one group of fixed conveying groups 10 are fixed on the base 11. The two groups of movable conveying groups 9 are respectively arranged on both sides of the second mobile frame B63. The movable conveying group 9 includes a first conveying frame 91 and a plurality of first conveying rollers 92 arranged on the first conveying frame 91. The movable conveying group 9 can be accommodated in the gap between the second mobile frame A62 and the second mobile frame B63 and can be accommodated in the gap between the second mobile frame C64 and the second mobile frame B63. The fixed conveying group 10 includes a second conveying frame 101 and a plurality of second conveying rollers 102 arranged on the second conveying frame 101. The fixed conveying group 10 is arranged at the B end and extends out of the welding frame 1.

[0062] Fixed blocks 93 are fixed on both sides of the first conveying frame 91, and threaded holes 94 are opened on the fixed blocks 93; fixed rods 110 are fixed on both sides of the welding frame 1, and several threaded holes 94 are opened on the fixed rods 110. The fixed blocks 93 can be fixed to the fixed rods 110 by screws.

[0063] Working principle: 1) According to the actual shape of the frame, first adjust the positions of the first mobile frame A52, the first mobile frame C54, the second mobile frame A62 and the second mobile frame C64, then adjust the positions of the multiple first mobile clamps 55 and the second mobile clamps 65, and according to the positions of the second mobile frame A62, the second mobile frame B63 and the second mobile frame C64, adjust the two groups of movable conveying groups 9 to the gap between the second mobile frame A62 and the second mobile frame B63 and the gap between the second mobile frame C64 and the second mobile frame B63 respectively; 2) Fix the four frame rods to the second clamp group 6, move up the second fixture group 6, pass the support rod through the through hole A556 and the through hole B557 from top to bottom in sequence, until the bottom of the support rod touches the welding position of the frame rod, and fix the support rod between the extrusion block 555 and the first cushion block 554 through the first cylinder pusher 553 on the first fixture group 5. At this time, the frame rod on the second fixture group 6 and the support rod on the first fixture group 5 are fixed, and the first welding robot 3 welds the adjacent frame rods and welds the frame rods and support rods in sequence; 3) After step 2) is completed, the second fixture group 6 moves down with the welded semi-finished product, and according to whether the frame is regular, Adjust or do not adjust the positions of the first movable frame A52, the first movable frame C54 and the first movable clamp 55 on the first clamp group 5, then clamp the four frame rods on the first clamp group 5, and the second welding robot 4 welds the adjacent frame rods in sequence to form a frame, then rotate the first clamp group 5 180 degrees, and then move the second clamp group 6 upward until the top of the support rod is against the frame on the first clamp group 5, and the second welding robot 4 welds the frame rods and the support rods in sequence; 4) After step 3) is completed, move the second clamp group 6 downward, and the second clamp group 6 moves downward with the formed sofa armrest frame, When moving downward, all the second cylinder clamps A652 and second cylinder clamps B662 on the second clamp group 6 are released. Since the two groups of movable conveying groups 9 are in the gap between the second movable frame A62 and the second movable frame B63 and the gap between the second movable frame C64 and the second movable frame B63, when the second clamp group 6 moves downward to a certain position, the formed sofa armrest frame is lifted up by the two groups of movable conveying groups 9. At this time, the two groups of movable conveying groups 9 are started, and the formed sofa armrest frame is conveyed by the two groups of movable conveying groups 9 to the fixed conveying group 10 until it is conveyed to the outside of the welding frame 1, and the conveying is completed.

[0064] The present invention sets two clamp groups 2 to weld two armrest frames respectively, and then completes the welding of support rods through the settings of rotation and up and down movement, thereby realizing the welding and forming of the sofa armrest frame; by setting a mobile frame and a mobile clamp 25, the welding of armrest frames of different sizes or irregular shapes can be realized to meet the modern personalized customization needs; by setting a conveying group, the conveyance of the sofa armrest frame can be realized to avoid collision and achieve high efficiency.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should fall within the scope of protection of the present invention.

Claims

1. A sofa production armrest frame welding device, characterized in that: The invention comprises a welding frame (1), two fixture groups (2), a first welding robot (3) and a second welding robot (4), wherein the fixture group (2) comprises a fixture frame (21), a mobile frame A (22), a mobile frame B (23) and a mobile frame C (24), the middle portion of the fixture frame (21) is hollowed out, the mobile frame A (22) and the mobile frame C (24) are movably arranged on the fixture frame (21) and the moving direction is parallel to the length direction of the fixture frame (21), the mobile frame B (23) is fixed in the middle portion of the fixture frame (21) and is arranged between the mobile frame A (22) and the mobile frame C (24), and the mobile frame A (22), the mobile frame B (23) and the mobile frame C (24) are each provided with two groups of mobile fixtures (25) and a group of fixed fixtures (26) fixed between the two mobile fixtures (25). The moving direction of the movable clamp (25) is parallel to the width direction of the clamp frame (21); both ends of one clamp group (2) are rotatably arranged on the welding frame (1) and its movable clamp (25) is used to clamp the frame rod and the support rod; the other clamp group (2) is arranged below one clamp group (2) and can move up and down on the welding frame (1) and its movable clamp (25) is used to clamp the frame rod; the first welding robot (3) and the second welding robot (4) are respectively arranged on both sides of the welding frame (1); the two clamp groups (2) are respectively a first clamp group (5) and a second clamp group (6); both ends of the first clamp group (5) are rotatably arranged on the welding frame (1); the second clamp group (6) is arranged below the first clamp group (5) and can move up and down on the welding frame (1); The first fixture group (5) includes a first fixture frame (51), a first movable frame A (52), a first movable frame B (53) and a first movable frame C (54), the middle part of the first fixture frame (51) is hollowed out and both ends are rotatably arranged on the welding frame (1), the first movable frame A (52) and the first movable frame C (54) are movably arranged on the first fixture frame (51) and the moving direction is parallel to the length direction of the first fixture frame (51), the first movable frame B (53) is fixed at the middle part of the first fixture frame (51) and is arranged between the first movable frame A (52) and the first movable frame C (54), the first movable frame A (52), the first movable frame B (53) and the first movable frame C (54) are each provided with two groups of first movable fixtures (55) and a group of first fixed fixtures (56) fixed between the two first movable fixtures (55), and the moving direction of the first movable fixture (55) is parallel to the width direction of the first fixture frame (51); The second fixture group (6) includes a second fixture frame (61), a second movable frame A (62), a second movable frame B (63) and a second movable frame C (64), the middle part of the second fixture frame (61) is hollowed out and can move up and down on the welding frame (1), the second movable frame A (62) and the second movable frame C (64) are movably arranged on the second fixture frame (61) and the moving direction is parallel to the length direction of the second fixture frame (61), the second movable frame B (63) is fixed at the middle part of the second fixture frame (61) and is arranged between the second movable frame A (62) and the second movable frame C (64), the second movable frame A (62), the second movable frame B (63) and the second movable frame C (64) are each provided with two groups of second movable fixtures (65) and a group of second fixed fixtures (66) fixed between the two second movable fixtures (65), and the moving direction of the second movable fixture (65) is parallel to the width direction of the second fixture frame (61); The first movable fixture (55) includes a first movable plate (551), a first cylinder clamping member A (552), a first cylinder pushing member (553) and a first cushion block A (554). The first movable plate (551) is movable on the first movable frame A (52), the first movable frame B (53) and the first movable frame C (54). A through hole A (556) for inserting the support rod is provided in the middle of the first movable plate (551). A through hole B (557) corresponding to the upper and lower positions of the through hole A (556) is provided on the first movable frame A (52), the first movable frame B (53) and the first movable frame C (54). The first movable frame A ( 52) and the first cylinder clamp A (552) on the first movable frame C (54) are used to respectively clamp the two frame rods to be welded together, the cylinder of the first cylinder push piece (553) is fixed on the first movable plate (551), the piston end thereof is horizontally retractable and an extrusion block (555) is fixed on the end thereof, the first cushion block A (554) is fixed at a position on the first movable plate (551) where the first cylinder clamp A (552) and the first cylinder push piece (553) are not provided, the first cushion block A (554) avoids the through hole A (556), and the height of the first cushion block A (554) is the same as the height of the first cylinder push piece (553); The first fixing fixture (56) comprises a first fixing plate (561), a first cylinder clamp B (562) and a first cushion block B (563); the first fixing plate (561) is fixed to the middle of the first mobile frame A (52), the first mobile frame B (53) and the first mobile frame C (54); the first cylinder clamp B (562) is used to clamp the frame rod; the first cushion block B (563) is fixed to a position on the first fixing plate (561) where the first cylinder clamp B (562) is not provided; The second movable clamp (65) includes a second movable plate (651) and a second cylinder clamp A (652). The second movable plate (651) is movable on the second movable frame A (62), the second movable frame B (63) and the second movable frame C (64). The second cylinder clamp A (652) on the second movable frame A (62) and the second movable frame C (64) is used to respectively clamp two frame rods to be welded together. The second cylinder clamp A (652) includes a second cylinder A (6521), a second rotating rod (6522), a second pressing rod (6523) and a second hinge rod (6524). ), the second cylinder A (6521) is fixed on the second movable plate (651) and the piston end is extended and retracted upward, the cylinder barrel is embedded in the second movable plate (651) and protrudes from the upper surface of the second movable plate (651), the top of the cylinder barrel is fixed with a second connecting block (6525), the top of the piston end is rotatably connected to one end of the second rotating rod (6522), the second pressure rod (6523) is fixed to the bottom of the other end of the second rotating rod (6522), one end of the second hinge rod (6524) is rotatably connected to the second rotating rod (6522) and the other end is rotatably connected to the second connecting block (6525); The second fixing fixture (66) includes a second fixing plate (661) and a second cylinder clamp B (662), wherein the second fixing plate (661) is fixed to the middle of the first mobile frame A (52), the first mobile frame B (53) and the first mobile frame C (54), and the second cylinder clamp B (662) is used to clamp the frame rod. The structure of the second cylinder clamp B (662) is the same as that of the second cylinder clamp A (652).

2. The armrest frame welding device for sofa production according to claim 1, characterized in that: The first cylinder clamp A (552) and the first cylinder clamp B (562) have the same structure, including a first cylinder A (71), a first rotating rod (72), a first pressure rod (73) and a first hinge rod (74). The first cylinder A (71) is fixed in position and the piston end is extended upward. The cylinder barrel is higher than the first cushion block A (554) and the first cushion block B (563). The top of the cylinder barrel is fixed with a first connecting block (75). The top of the piston end is rotatably connected to one end of the first rotating rod (72). The first pressure rod (73) is fixed to the bottom of the other end of the first rotating rod (72). One end of the first hinge rod (74) is rotatably connected to the first rotating rod (72) and the other end is rotatably connected to the first connecting block (75).

3. The armrest frame welding device for sofa production according to claim 1, characterized in that: A first electric screw (57) and a first slide bar (58) are provided on both sides of the first clamp frame (51); the first movable frame A (52) and the first movable frame C (54) are respectively slidably connected to the first electric screw (57) on one side and the first slide bar (58) on the other side; the first movable frame A (52), the first movable frame B (53) and the first movable frame C (54) are respectively provided with two second electric screws (59); the two first movable clamps (55) are respectively slidably connected to the two second electric screws (59).

4. The armrest frame welding device for sofa production according to claim 1, characterized in that: A third electric screw (67) and a second slide bar (68) are provided on both sides of the second clamp frame (61); the second movable frame A (62) and the second movable frame C (64) are respectively slidably connected to the third electric screw (67) on one side and the second slide bar (68) on the other side; the second movable frame A (62), the second movable frame B (63) and the second movable frame C (64) are each provided with two fourth electric screws (69); the two second movable clamps (65) are respectively slidably connected to the two fourth electric screws (69).

5. The armrest frame welding device for sofa production according to claim 1, characterized in that: The welding frame (1) includes a base (11) and four supporting legs (12), the four supporting legs (12) are fixed on the welding frame (1), and a supporting plate (13) is fixed on the upper part of each of the supporting legs (12). The two ends of the first clamp frame (51) are rotatably arranged on the two supporting plates (13), and the inner side of the supporting legs (12) is provided with a slide rail (14) for the second clamp frame (61) to slide. Two third cylinders (8) are fixed on the base (11), and the piston ends of the two third cylinders (8) are respectively fixedly connected to the two sides of the second clamp frame (61) and drive the second clamp frame (61) to move along the slide rail (14).

6. The armrest frame welding device for sofa production according to claim 5, characterized in that: The second fixture frame (61) comprises two second support frames (611) arranged in parallel and a first connecting frame (612), wherein the first connecting frame (612) is fixed to the same end of the two second support frames (611), which end is marked as end A, and the other end of the two second support frames (611) is marked as end B; Two groups of movable conveying groups (9) and one group of fixed conveying groups (10) are fixed on the base (11). The two groups of movable conveying groups (9) are respectively arranged on both sides of the second mobile frame B (63). The movable conveying group (9) includes a first conveying frame (91) and a plurality of first conveying rollers (92) arranged on the first conveying frame (91). The movable conveying group (9) can be accommodated in the gap between the second mobile frame A (62) and the second mobile frame B (63) and can be accommodated in the gap between the second mobile frame C (64) and the second mobile frame B (63). The fixed conveying group (10) includes a second conveying frame (101) and a plurality of second conveying rollers (102) arranged on the second conveying frame (101). The fixed conveying group (10) is arranged at the B end and extends out of the interior of the welding frame (1).

7. The armrest frame welding device for sofa production according to claim 6, characterized in that: Fixed blocks (93) are fixed on both sides of the first conveying frame (91), and threaded holes (94) are provided on the fixed blocks (93); fixed rods (110) are fixed on both sides of the welding frame (1), and a plurality of threaded holes (94) are provided on the fixed rods (110). The fixed blocks (93) can be fixed to the fixed rods (110) by screws.

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