CN211102416U - Sofa back support frame welding jig - Google Patents

Abstract

The utility model relates to a sofa back-support frame welding fixture, which comprises a first back-support horizontal fixture, a second back-support horizontal fixture, a third back-support horizontal fixture, a fourth back-support horizontal fixture, a fifth back-support horizontal fixture, a first back-support vertical fixture, a second back-support vertical fixture, a third back-support vertical fixture, a fourth back-support vertical fixture, a fifth back-support vertical fixture, a sixth back-support vertical fixture, a seventh back-support vertical fixture, a first back-support inclined fixture and a second back-support inclined fixture; can press from both sides tightly fixedly respectively to each member in the constitution sofa back support frame, then carry out unified welding by welding robot, make the sofa back support frame quality that the welding came out unified, realize also promoting the production efficiency to sofa back support frame simultaneously to sofa back support frame mass production.

Description

Sofa back support frame welding jig

Technical Field

The utility model relates to a sofa back-support frame welding jig.

Background

The existing sofa frame is changed from traditional wood to the existing iron or stainless steel, the sofa frame comprises a sofa seat frame, two sofa armrest frames and a sofa backrest frame, in the process of manufacturing the sofa frame, steel rods are firstly used for welding to form the single seat frame, the armrest frames and the backrest frame, and then all the frames are assembled together to form the whole sofa frame.

As shown in fig. 1, the sofa seat frame is divided into a sofa bottom frame, a sofa spring frame and a sofa back support frame; the production of the sofa back-support frame is mainly formed into the whole sofa back-support frame by manually holding the steel rods one by one, the welding efficiency is very low, the quality of the sofa back-support frame welded in a handheld mode is not uniform, and batch operation cannot be realized.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: overcome prior art's not enough, provide a sofa back-support frame welding jig, solve the problem that concatenation centre gripping is inefficient in present sofa back-support frame production welding.

The utility model provides a technical scheme that its technical problem adopted is:

a sofa back support frame welding fixture comprises a first back support cross rod, a second back support cross rod, a third back support cross rod, a fourth back support cross rod, a fifth back support cross rod, a first back support vertical rod, a second back support vertical rod, a third back support vertical rod, a fourth back support vertical rod, a fifth back support vertical rod, a sixth back support vertical rod, a seventh back support vertical rod, a first back support inclined rod and a second back support inclined rod; the first rear support cross rod, the second rear support cross rod, the third rear support cross rod and the fifth rear support cross rod form a rectangular frame, and the fourth rear support cross rod is arranged between the first rear support cross rod and the second rear support cross rod; the first rear support upright rod is arranged below the joint of the first rear support cross rod and the third rear support cross rod; the second rear support upright rod is arranged below the first rear support cross rod; the third rear support upright rod is arranged below the joint of the first rear support cross rod and the fifth rear support cross rod; the fourth rear support upright rod is arranged below the joint of the second rear support cross rod and the third rear support cross rod; the fifth rear support vertical rod is arranged below the joint of the second rear support cross rod and the fifth rear support cross rod; the sixth rear support vertical rod is arranged below the second rear support cross rod, and the first rear support inclined rod is connected with the sixth rear support vertical rod; the seventh rear support vertical rod is arranged below the second rear support cross rod, and the second rear support inclined rod is connected with the seventh rear support vertical rod;

the rear support frame welding fixture comprises a first rear support transverse fixture, a second rear support transverse fixture, a third rear support transverse fixture, a fourth rear support transverse fixture, a fifth rear support transverse fixture, a first rear support vertical fixture, a second rear support vertical fixture, a third rear support vertical fixture, a fourth rear support vertical fixture, a fifth rear support vertical fixture, a sixth rear support vertical fixture, a seventh rear support vertical fixture, a first rear support inclined fixture and a second rear support inclined fixture;

the first rear support cross clamp is suitable for limiting the displacement of the first rear support cross rod; the second rear support transverse clamp is suitable for limiting the displacement of the second rear support cross rod; the third rear support cross clamp is suitable for limiting the displacement of the third rear support cross rod; the fourth rear support cross clamp is suitable for limiting the displacement of the fourth rear support cross rod; the fifth rear support horizontal clamp is suitable for limiting the displacement of the fifth rear support cross rod;

the first rear supporting vertical clamp is suitable for limiting the displacement of the first rear supporting vertical rod; the second rear support vertical clamp is suitable for limiting the displacement of the second rear support vertical rod; the third rear support vertical clamp is suitable for limiting the displacement of the third rear support vertical rod; the fourth rear support vertical clamp is suitable for limiting the displacement of the fourth rear support vertical rod; the fifth rear supporting vertical clamp is suitable for limiting the displacement of the fifth rear supporting vertical rod; the sixth rear supporting vertical clamp is suitable for limiting the displacement of the sixth rear supporting vertical rod; the seventh rear support vertical clamp is suitable for limiting the displacement of the seventh rear support vertical rod;

the first rear support inclined clamp is suitable for limiting the displacement of the first rear support inclined rod; the second back-brace diagonal clamp is suitable for limiting the displacement of the second back-brace diagonal rod.

Further, the first back support transverse fixture comprises a plurality of first back support transverse support blocks, a first back support transverse installation block, a first back support transverse electromagnet and a first back support transverse cylinder, wherein the first back support transverse electromagnet is arranged on the first back support transverse installation block;

each first rear support transverse electromagnet is suitable for supporting a first rear support cross rod, the first rear support transverse electromagnet is suitable for vertically adsorbing and fixing the first rear support cross rod, and the first rear support transverse cylinder is suitable for abutting the first rear support cross rod on the first rear support transverse supporting block in the horizontal direction;

the second rear support transverse fixture comprises a plurality of second rear support transverse support blocks, second rear support transverse installation blocks, second rear support transverse electromagnets and second rear support transverse cylinders, and the second rear support transverse electromagnets are arranged on the second rear support transverse installation blocks;

each second rear support transverse electromagnet is suitable for supporting a second rear support cross rod, the second rear support transverse electromagnets are suitable for vertically adsorbing and fixing the second rear support cross rods, and the second rear support transverse cylinder is suitable for abutting the second rear support cross rods on the second rear support transverse supporting blocks in the horizontal direction;

the third rear support transverse clamp comprises a third rear support transverse support seat, a third rear support transverse cylinder I and a third rear support transverse cylinder II, the third rear support transverse support seat is suitable for supporting a third rear support transverse rod, the third rear support transverse cylinder I is suitable for abutting the third rear support transverse rod on the third rear support transverse support seat in the horizontal direction, and the third rear support transverse cylinder II is suitable for vertically abutting the third rear support transverse rod on the third rear support transverse support seat;

the fourth back support transverse clamp comprises a fourth back support transverse support seat, a fourth back support transverse electromagnet and a fourth back support transverse cylinder, the fourth back support transverse support seat is suitable for supporting a fourth back support cross rod, the fourth back support transverse electromagnet is suitable for vertically adsorbing and fixing the fourth back support cross rod, and the fourth back support transverse cylinder is suitable for vertically pressing the fourth back support cross rod on the fourth back support transverse support seat;

the fifth rear support transverse clamp comprises a fifth rear support transverse support seat, a fifth rear support transverse cylinder I and a fifth rear support transverse cylinder II, the fifth rear support transverse support seat is suitable for supporting a fifth rear support transverse rod, the fifth rear support transverse cylinder I is suitable for abutting the fifth rear support transverse rod on the fifth rear support transverse support seat in the horizontal direction, and the fifth rear support transverse cylinder II is suitable for abutting the fifth rear support transverse rod on the fifth rear support transverse support seat in the vertical direction;

the first rear supporting vertical clamp comprises a first rear supporting vertical cylinder, a second rear supporting vertical cylinder, a first rear supporting vertical mounting plate, a second rear supporting vertical mounting plate and a first rear supporting vertical electromagnet, a push rod of the first rear supporting vertical cylinder is connected with the first rear supporting vertical mounting plate and the second rear supporting vertical mounting plate, the first rear supporting vertical electromagnet is fixedly arranged on the first rear supporting vertical mounting plate, the second rear supporting vertical cylinder is fixedly arranged on the second rear supporting vertical mounting plate, the first rear supporting vertical electromagnet adsorbs the first rear supporting vertical rod, and the second rear supporting vertical cylinder tightly supports the first rear supporting vertical rod so that the first rear supporting vertical rod is arranged above the joint of the first rear supporting cross rod and the third rear supporting cross rod;

the second rear supporting vertical clamp comprises a second rear supporting vertical cylinder, a second rear supporting vertical mounting plate and a second rear supporting vertical electromagnet, a push rod of the second rear supporting vertical cylinder is connected with the second rear supporting vertical mounting plate, the second rear supporting vertical electromagnet is arranged on the second rear supporting vertical mounting plate, and the second rear supporting vertical electromagnet adsorbs the second rear supporting vertical rod so that the second rear supporting vertical rod is arranged above the first rear supporting cross rod;

the third rear supporting vertical clamp comprises a first third rear supporting vertical cylinder, a second third rear supporting vertical cylinder, a first third rear supporting vertical mounting plate, a second third rear supporting vertical mounting plate and a third rear supporting vertical electromagnet, a push rod of the first third rear supporting vertical cylinder is connected with the first third rear supporting vertical mounting plate and the second third rear supporting vertical mounting plate, the third rear supporting vertical electromagnet is fixedly arranged on the first third rear supporting vertical mounting plate, the second third rear supporting vertical cylinder is fixedly arranged on the second third rear supporting vertical mounting plate, the third rear supporting vertical electromagnet adsorbs the third rear supporting vertical rod, and the second third rear supporting vertical cylinder tightly supports the third rear supporting vertical rod so that the third rear supporting vertical rod is arranged above the joint of the first rear supporting cross rod and the fifth rear supporting cross rod;

the fourth rear supporting vertical clamp comprises a fourth rear supporting vertical cylinder I, a fourth rear supporting vertical cylinder II, a fourth rear supporting vertical mounting plate I, a fourth rear supporting vertical mounting plate II and a fourth rear supporting vertical electromagnet, a push rod of the fourth rear supporting vertical cylinder I is connected with the fourth rear supporting vertical mounting plate I and the fourth rear supporting vertical mounting plate II, the fourth rear supporting vertical electromagnet is fixedly arranged on the fourth rear supporting vertical mounting plate I, the fourth rear supporting vertical cylinder II is fixedly arranged on the fourth rear supporting vertical mounting plate II, the fourth rear supporting vertical electromagnet adsorbs the fourth rear supporting vertical rod, and the fourth rear supporting vertical cylinder II tightly supports the fourth rear supporting vertical rod so that the fourth rear supporting vertical rod is arranged above the joint of the second rear supporting cross rod and the third rear supporting cross rod;

the fifth rear supporting vertical clamp comprises a fifth rear supporting vertical cylinder I, a fifth rear supporting vertical cylinder II, a fifth rear supporting vertical mounting plate I, a fifth rear supporting vertical mounting plate II and a fifth rear supporting vertical electromagnet, a push rod of the fifth rear supporting vertical cylinder I is connected with the fifth rear supporting vertical mounting plate I and the fifth rear supporting vertical mounting plate II, the fifth rear supporting vertical electromagnet is fixedly arranged on the fifth rear supporting vertical mounting plate I, the fifth rear supporting vertical cylinder II is fixedly arranged on the fifth rear supporting vertical mounting plate II, the fifth rear supporting vertical electromagnet adsorbs a fifth rear supporting vertical rod, and the fifth rear supporting vertical cylinder II tightly supports the fifth rear supporting vertical rod, so that the fifth rear supporting vertical rod is arranged above the joint of the second rear supporting cross rod and the fifth rear supporting cross rod;

the sixth rear supporting vertical clamp comprises a sixth rear supporting vertical cylinder 561, a sixth rear supporting vertical mounting plate and a sixth rear supporting electromagnet, a push rod of the sixth rear supporting vertical cylinder 561 is connected with the sixth rear supporting vertical mounting plate, the sixth rear supporting electromagnet is arranged on the sixth rear supporting vertical mounting plate, and the sixth rear supporting electromagnet adsorbs the sixth rear supporting rod so that the sixth rear supporting rod is arranged above the second rear supporting cross rod;

the seventh rear supporting vertical clamp comprises a seventh rear supporting vertical cylinder, a seventh rear supporting vertical mounting plate and a seventh rear supporting vertical electromagnet, a push rod of the seventh rear supporting vertical cylinder is connected with the seventh rear supporting vertical mounting plate, the seventh rear supporting vertical electromagnet is arranged on the seventh rear supporting vertical mounting plate, and the seventh rear supporting vertical electromagnet adsorbs the seventh rear supporting vertical rod so that the seventh rear supporting vertical rod is arranged above the second rear supporting cross rod;

the first rear-support inclined clamp comprises a first rear-support inclined supporting seat and a first rear-support inclined electromagnet, the first rear-support inclined electromagnet is fixedly arranged on the first rear-support inclined supporting seat, the first rear-support inclined supporting seat is suitable for obliquely supporting a first rear-support inclined rod, and the first rear-support inclined electromagnet is suitable for adsorbing and fixing the first rear-support inclined rod on the first rear-support inclined supporting seat;

the second rear-support inclined clamp comprises a second rear-support inclined support seat and a second rear-support inclined electromagnet, the second rear-support inclined electromagnet is fixedly arranged on the second rear-support inclined support seat, the second rear-support inclined support seat is suitable for obliquely supporting a second rear-support inclined rod, and the second rear-support inclined electromagnet is suitable for adsorbing and fixing the second rear-support inclined rod on the second rear-support inclined support seat;

furthermore, the rear support frame welding base plate, the first sliding plate, the second sliding plate, the third sliding plate, the fourth sliding plate and the fifth sliding plate are also included;

the rear support frame welding bottom plate is provided with a sliding rail, and the first sliding plate, the second sliding plate, the third sliding plate, the fourth sliding plate and the fifth sliding plate are movably arranged on the rear support frame welding bottom plate through the sliding rail;

the first rear supporting vertical clamp, the fourth rear supporting vertical clamp and the third rear supporting transverse clamp are arranged on the first sliding plate;

the first rear support inclined clamp and the sixth rear support vertical clamp are arranged on the second sliding plate;

the second rear support vertical clamp and the fourth rear support transverse clamp are arranged on the third sliding plate;

the seventh rear support vertical clamp and the second rear support inclined clamp are arranged on the fourth sliding plate;

and the fifth rear support vertical clamp, the third rear support vertical clamp and the fifth rear support transverse clamp are arranged on the fifth sliding plate.

The utility model has the advantages that:

the utility model provides a sofa back-support frame welding jig can press from both sides tight fixedly respectively to each member in the constitution sofa back-support frame, then carries out unified welding by welding robot, makes the sofa back-support frame quality that the welding came out unified, realizes the production of sofa back-support frame mass production, also promotes the production efficiency to sofa back-support frame simultaneously.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

FIG. 1 is a schematic view of a sofa base frame, a sofa spring frame and a sofa back support frame forming a sofa seat frame;

FIG. 2 is a schematic view of a sofa back support frame welding fixture;

FIG. 3 is a schematic view of the back support frame of each of the clamp supports holding the sofa;

FIG. 4 is a schematic view of the various clamps within the sofa back support frame welding fixture;

wherein the content of the first and second substances,

1. a sofa seat frame;

11. a sofa bottom frame;

111. a first bottom cross bar, 112, a second bottom cross bar, 113, a third bottom cross bar, 114, a fourth bottom cross bar, 115, a fifth bottom cross bar, 116, a first bottom upright, 117, a second bottom upright, 118, a third bottom upright;

12. a sofa spring frame;

1201. a first spring crossbar 1202, a second spring crossbar 1203, a third spring crossbar 1204, a fourth spring crossbar 1205, a first spring bent rod 1206, a second spring bent rod 1207, a first spring upright rod 1208, a second spring upright rod 1209, a third spring upright rod 1210, a fourth spring upright rod 1211 and a fifth spring upright rod;

13. a sofa back support frame;

1301. first rear support cross bar, 1302, second rear support cross bar, 1303, third rear support cross bar, 1304, fourth rear support cross bar, 1305, fifth rear support cross bar, 1306, first rear support upright, 1307, second rear support upright, 1308, third rear support upright, 1309, fourth rear support upright, 1310, fifth rear support upright, 1311, sixth rear support upright, 1312, seventh rear support upright, 1313, first rear support diagonal, 1314, second rear support diagonal;

41. the device comprises a first rear support transverse clamp 411, a first rear support transverse supporting block 412, a first rear support transverse mounting block 413, a first rear support transverse electromagnet 414 and a first rear support transverse cylinder;

42. a second back support horizontal clamp, 421, a second back support horizontal support block, 422, a second back support horizontal installation block, 423, a second back support horizontal electromagnet, 424, a second back support horizontal cylinder;

43. a third back support horizontal clamp, 431, a third back support horizontal support base, 432, a third back support horizontal cylinder I, 433 and a third back support horizontal cylinder II;

44. a fourth rear support horizontal clamp, 441, a fourth rear support horizontal support base, 442, a fourth rear support horizontal electromagnet, 443, a fourth rear support horizontal cylinder;

45. a fifth back-support horizontal clamp, 451, a fifth back-support horizontal support base, 452, a fifth back-support horizontal cylinder I, 453, and a fifth back-support horizontal cylinder II;

46. a first rear-support inclined clamp 461, a first rear-support inclined support seat 462 and a first rear-support inclined electromagnet;

47. a second rear inclined supporting fixture 471, a second rear inclined supporting seat 472 and a second rear inclined supporting electromagnet;

51. the first rear supporting and standing clamp 511, the first rear supporting and standing cylinder I and 512, the second rear supporting and standing cylinder II and 513, the first rear supporting and standing mounting plate I and 514, the second rear supporting and standing mounting plate II and 515 and the first rear supporting and standing electromagnet;

52. a second rear support fixture 521, a second rear support cylinder 522, a second rear support mounting plate 523 and a second rear support electromagnet;

53. a third rear supporting and standing clamp 531, a first third rear supporting and standing cylinder 532, a second third rear supporting and standing cylinder 533, a first third rear supporting and standing mounting plate 534, a second third rear supporting and standing mounting plate 535 and a third rear supporting and standing electromagnet;

54. a fourth rear support clamp 541, a fourth rear support cylinder I, 542, a fourth rear support cylinder II, 543, a fourth rear support mounting plate I, 544, a fourth rear support mounting plate II, 545 and a fourth rear support electromagnet;

55. a fifth rear supporting and standing clamp 551, a fifth rear supporting and standing cylinder I, 552, a fifth rear supporting and standing cylinder II, 553, a fifth rear supporting and standing mounting plate I, 554, a fifth rear supporting and standing mounting plate II, 555 and a fifth rear supporting and standing electromagnet,

56. a sixth rear supporting and standing clamp 561, a sixth rear supporting and standing cylinder 562, a sixth rear supporting and standing mounting plate 563, a sixth rear supporting and standing electromagnet,

57. a seventh rear support fixture 571, a seventh rear support cylinder 572, a seventh rear support mounting plate 573, and a seventh rear support electromagnet;

48. a rear support frame welding bottom plate 481, a first sliding plate 482, a second sliding plate 483, a third sliding plate 484, a fourth sliding plate 485 and a fifth sliding plate;

Detailed Description

The invention will now be further described with reference to the accompanying drawings. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1, a sofa seat frame 1 includes a sofa bottom frame 11, a sofa spring frame 12 and a sofa back support frame 13;

the sofa bottom frame 11 comprises a first bottom cross bar 111, a second bottom cross bar 112, a third bottom cross bar 113, a fourth bottom cross bar 114, a fifth bottom cross bar 115, a first bottom vertical rod 116, a second bottom vertical rod 117 and a third bottom vertical rod 118; the first bottom upright stanchion 116 is vertically arranged at the joint of the second bottom upright stanchion and the fourth bottom upright stanchion, the second bottom upright stanchion 117 is vertically arranged on the second bottom cross stanchion 112, the third bottom upright stanchion 118 is vertically arranged at the joint of the second bottom cross stanchion and the fifth bottom cross stanchion, and the third bottom cross stanchion 113 is transversely arranged at the upper ends of the first bottom upright stanchion, the second bottom upright stanchion and the third bottom cross stanchion;

the sofa spring frame 12 comprises a first spring crossbar 1201, a second spring crossbar 1202, a third spring crossbar 1203, a fourth spring crossbar 1204, a first spring bent bar 1205, a second spring bent bar 1206, a first spring upright 1207, a second spring upright 1208, a third spring upright 1209, a fourth spring upright 1210, and a fifth spring upright 1211; the first spring cross bar 1201, the second spring cross bar 1202, the third spring cross bar 1203 and the fourth spring cross bar 1204 form a rectangular frame, and the first spring curved bar 1205 and the second spring curved bar 1206 are arranged between the first spring cross bar 1201 and the second spring cross bar 1202; the first spring upright 1207 is arranged below the joint of the first spring cross bar 1201 and the third spring cross bar 1203; the second spring upright 1208 is arranged below the joint of the first spring cross rod 1201 and the fourth spring cross rod 1204; the third spring upright 1209 is disposed below the junction of the second spring crossbar 1202 and the third spring crossbar 1203; the fourth spring upright 1210 is disposed below the junction of the second spring cross bar 1202; the fifth spring upright 1211 is disposed below the intersection of the second spring rail 1202 and the fourth spring rail 1204;

the sofa back-support frame 13 comprises a first back-support cross bar 1301, a second back-support cross bar 1302, a third back-support cross bar 1303, a fourth back-support cross bar 1304, a fifth back-support cross bar 1305, a first back-support upright bar 1306, a second back-support upright bar 1307, a third back-support upright bar 1308, a fourth back-support upright bar 1309, a fifth back-support upright bar 1310, a sixth back-support upright bar 1311, a seventh back-support upright bar 1312, a first back-support inclined bar 1313 and a second back-support inclined bar 1314;

the first rear support cross bar 1301, the second rear support cross bar 1302, the third rear support cross bar 1303 and the fifth rear support cross bar 1305 form a rectangular frame, and the fourth rear support cross bar 1304 is arranged between the first rear support cross bar 1301 and the second rear support cross bar 1302;

the first rear support upright 1306 is arranged below the joint of the first rear support cross bar 1301 and the third rear support cross bar 1303;

the second rear support upright 1307 is disposed below the first rear support cross bar 1301;

the third rear support upright 1308 is arranged below the joint of the first rear support cross bar 1301 and the fifth rear support cross bar 1305;

the fourth rear support upright 1309 is arranged below the joint of the second rear support cross bar 1302 and the third rear support cross bar 1303;

the fifth rear support upright 1310 is disposed below the junction of the second rear support crossbar 1302 and the fifth rear support crossbar 1305;

the sixth rear support upright 1311 is disposed below the second rear support cross bar 1302, and the first rear support diagonal 1313 is connected to the sixth rear support upright 1311;

the seventh rear supporting vertical rod 1312 is arranged below the second rear supporting cross rod 1302, and the second rear supporting inclined rod 1314 is connected with the seventh rear supporting vertical rod 1312;

the embodiment mainly aims at the clamping operation of each rod piece of the sofa back support frame 13;

as shown in fig. 2 to 4, the back support frame welding jig includes a first back support horizontal jig 41, a second back support horizontal jig 42, a third back support horizontal jig 43, a fourth back support horizontal jig 44, a fifth back support horizontal jig 45, a first back support vertical jig 51, a second back support vertical jig 52, a third back support vertical jig 53, a fourth back support vertical jig 54, a fifth back support vertical jig 55, a sixth back support vertical jig 56, a seventh back support vertical jig 57, a first back support inclined jig 46, and a second back support inclined jig 47;

the first rear support horizontal clamp 41 is adapted to limit the displacement of the first rear support cross bar 1301; the second back support cross clamp 42 is adapted to limit the displacement of the second back support cross bar 1302; the third back support cross clamp 43 is adapted to limit the displacement of the third back support cross bar 1303; the fourth back support cross clamp 44 is adapted to limit the displacement of the fourth back support cross bar 1304; the fifth back support cross clamp 45 is adapted to limit the displacement of the fifth back support cross bar 1305;

the first back-supporting vertical clamp 51 is suitable for limiting the displacement of the first back-supporting vertical rod 1306; the second rear supporting vertical clamp 52 is suitable for limiting the displacement of the second rear supporting vertical rod 1307; the third back-support vertical clamp 53 is adapted to limit the displacement of the third back-support vertical rod 1308; the fourth rear supporting vertical clamp 54 is suitable for limiting the displacement of the fourth rear supporting vertical rod 1309; the fifth rear supporting vertical clamp 55 is adapted to limit the displacement of the fifth rear supporting vertical rod 1310; the sixth back supporting vertical clamp 56 is adapted to limit the displacement of the sixth back supporting vertical rod 1311; the seventh rear supporting vertical clamp 57 is adapted to limit the displacement of the seventh rear supporting vertical rod 1312;

the first back brace diagonal clamp 46 is adapted to limit displacement of the first back brace diagonal 1313; the second rear brace inclined clamp 47 is adapted to limit the displacement of the second rear brace inclined rod 1314.

As shown in fig. 3, specifically, the first back support horizontal jig 41 includes a plurality of first back support horizontal support blocks 411, a first back support horizontal mounting block 412, a first back support horizontal electromagnet 413, and a first back support horizontal cylinder 414, where the first back support horizontal electromagnet 413 is disposed on the first back support horizontal mounting block 412; each first rear support cross electromagnet 413 is adapted to support a first rear support cross bar 1301, the first rear support cross electromagnet 413 is adapted to vertically adsorb and fix the first rear support cross bar 1301, and the first rear support cross cylinder 414 is adapted to horizontally press the first rear support cross bar 1301 against the first rear support cross support block 411;

the second rear support horizontal clamp 42 comprises a plurality of second rear support horizontal support blocks 421, a second rear support horizontal mounting block 422, a second rear support horizontal electromagnet 423 and a second rear support horizontal cylinder 424, and the second rear support horizontal electromagnet 423 is arranged on the second rear support horizontal mounting block 422;

each second back support cross electromagnet 423 is adapted to support a second back support cross bar 1302, the second back support cross electromagnet 423 is adapted to vertically adsorb and fix the second back support cross bar 1302, and the second back support cross cylinder 424 is adapted to horizontally press the second back support cross bar 1302 against the second back support cross support block 421;

the third rear support transverse clamp 43 comprises a third rear support transverse support seat 431, a first third rear support transverse cylinder 432 and a second third rear support transverse cylinder 433, wherein the third rear support transverse support seat 431 is suitable for supporting a third rear support cross rod 1303, the first third rear support transverse cylinder 432 is suitable for abutting the third rear support cross rod 1303 on the third rear support transverse support seat 431 in the horizontal direction, and the second third rear support transverse cylinder 433 is suitable for abutting the third rear support cross rod 1303 on the third rear support transverse support seat 431 in the vertical direction;

the fourth rear support cross fixture 44 includes a fourth rear support cross support base 441, a fourth rear support cross electromagnet 442, and a fourth rear support cross cylinder 443, the fourth rear support cross support base 441 is adapted to support the fourth rear support cross rod 1304, the fourth rear support cross electromagnet 442 is adapted to vertically adsorb and fix the fourth rear support cross rod 1304, and the fourth rear support cross cylinder 443 is adapted to vertically press the fourth rear support cross rod 1304 onto the fourth rear support cross support base 441;

the fifth rear-support horizontal clamp 45 comprises a fifth rear-support horizontal support base 451, a fifth rear-support horizontal cylinder one 452 and a fifth rear-support horizontal cylinder two 453, wherein the fifth rear-support horizontal support base 451 is suitable for supporting a fifth rear-support cross rod 1305, the fifth rear-support horizontal cylinder one 452 is suitable for abutting the fifth rear-support cross rod 1305 on the fifth rear-support horizontal support base 451 in the horizontal direction, and the fifth rear-support horizontal cylinder two 453 is suitable for abutting the fifth rear-support cross rod 1305 on the fifth rear-support horizontal support base 451 in the vertical direction;

the first rear supporting and erecting fixture 51 comprises a first rear supporting and erecting cylinder 511, a second rear supporting and erecting cylinder 512, a first rear supporting and erecting mounting plate 513, a second rear supporting and erecting mounting plate 514 and a first rear supporting and erecting electromagnet 515, a push rod of the first rear supporting and erecting cylinder 511 is connected with the first rear supporting and erecting mounting plate 513 and the second rear supporting and erecting mounting plate 514, the first rear supporting and erecting electromagnet 515 is fixedly arranged on the first rear supporting and erecting mounting plate 513, the second rear supporting and erecting cylinder 512 is fixedly arranged on the second rear supporting and erecting mounting plate 514, the first rear supporting electromagnet 515 adsorbs a first rear supporting and erecting rod 1306, and the second rear supporting and erecting cylinder 512 tightly supports the first rear supporting and erecting rod 1306, so that the first rear supporting and erecting rod 1306 is arranged above the joint of the first rear supporting cross rod 1301 and the third rear supporting cross rod 1303;

the second rear supporting and standing clamp 52 comprises a second rear supporting and standing cylinder 521, a second rear supporting and standing mounting plate 522 and a second rear supporting and standing electromagnet 523, wherein a push rod of the second rear supporting and standing cylinder 521 is connected with the second rear supporting and standing mounting plate 522, the second rear supporting and standing electromagnet 523 is arranged on the second rear supporting and standing mounting plate 522, and the second rear supporting and standing electromagnet 523 adsorbs a second rear supporting and standing rod 1307 so that the second rear supporting and standing rod 1307 is arranged above the first rear supporting cross rod 1301;

the third rear supporting and standing clamp 53 comprises a third rear supporting and standing cylinder I531, a third rear supporting and standing cylinder II 532, a third rear supporting and standing mounting plate I533, a third rear supporting and standing mounting plate II 534 and a third rear supporting and standing electromagnet 535, a push rod of the third rear supporting and standing cylinder I531 is connected with the third rear supporting and standing mounting plate I533 and the third rear supporting and standing mounting plate II 534, the third rear supporting and standing electromagnet 535 is fixedly arranged on the third rear supporting and standing mounting plate I533, the third rear supporting and standing cylinder II 532 is fixedly arranged on the third rear supporting and standing mounting plate II 534, the third rear supporting electromagnet 535 adsorbs a third rear supporting and standing rod 1308, and the third rear supporting and standing cylinder II 532 abuts against the third rear supporting and standing rod 1308, so that the third rear supporting and standing rod 1308 is arranged above the joint of the first rear supporting cross rod 1301 and the fifth rear supporting cross rod 1305;

the fourth rear supporting clamp 54 includes a fourth rear supporting cylinder 541, a fourth rear supporting cylinder 542, a fourth rear supporting mounting plate 543, a fourth rear supporting mounting plate 544 and a fourth rear supporting electromagnet 545, a push rod of the fourth rear supporting cylinder 541 is connected with the fourth rear supporting mounting plate 543 and the fourth rear supporting mounting plate 544, the fourth rear supporting electromagnet 545 is fixedly arranged on the fourth rear supporting mounting plate 543, the fourth rear supporting cylinder 542 is fixedly arranged on the fourth rear supporting mounting plate 544, the fourth rear supporting electromagnet 545 adsorbs the fourth rear supporting upright 1309, and the fourth rear supporting cylinder 542 tightly presses the fourth rear supporting upright 1309, so that the fourth rear supporting upright 1309 is arranged above the joint of the second rear supporting cross bar 1302 and the third rear supporting cross bar 1303;

the fifth rear supporting clamp 55 includes a fifth rear supporting cylinder i 551, a fifth rear supporting cylinder ii 552, a fifth rear supporting mounting plate i 553, a fifth rear supporting mounting plate ii 554 and a fifth rear supporting electromagnet 555, a push rod of the fifth rear supporting cylinder i 551 is connected with the fifth rear supporting mounting plate i 553 and the fifth rear supporting mounting plate ii 554, the fifth rear supporting electromagnet 555 is fixedly arranged on the fifth rear supporting mounting plate i 553, the fifth rear supporting cylinder ii 552 is fixedly arranged on the fifth rear supporting mounting plate ii 554, the fifth rear supporting electromagnet 555 adsorbs the fifth rear supporting upright rod 1310, and the fifth rear supporting cylinder ii abuts against the fifth rear supporting upright rod 1310, so that the fifth rear supporting upright rod 1310 is arranged above the joint of the second rear supporting cross rod 1302 and the fifth rear supporting cross rod 1305;

the sixth rear supporting clamp 56 comprises a sixth rear supporting cylinder 561, a sixth rear supporting mounting plate 562 and a sixth rear supporting electromagnet 563, the push rod of the sixth rear supporting cylinder 561 is connected with the sixth rear supporting mounting plate 562, the sixth rear supporting electromagnet 563 is arranged on the sixth rear supporting mounting plate 562, and the sixth rear supporting electromagnet 563 adsorbs the sixth rear supporting rod 1311, so that the sixth rear supporting rod 1311 is arranged above the second rear supporting cross rod 1302;

the seventh rear supporting and erecting fixture 57 comprises a seventh rear supporting and erecting cylinder 571, a seventh rear supporting and erecting mounting plate 572 and a seventh rear supporting and erecting electromagnet 573, wherein a push rod of the seventh rear supporting and erecting cylinder 571 is connected with the seventh rear supporting and erecting mounting plate 572, the seventh rear supporting and erecting electromagnet 573 is arranged on the seventh rear supporting and erecting mounting plate 572, and the seventh rear supporting and erecting electromagnet 573 adsorbs the seventh rear supporting and erecting rod 1312 so that the seventh rear supporting and erecting rod 1312 is arranged above the second rear supporting cross rod 1302;

the first rear-support inclined fixture 46 includes a first rear-support inclined support base 461 and a first rear-support inclined electromagnet 462, the first rear-support inclined electromagnet 462 is fixedly disposed on the first rear-support inclined support base 461, the first rear-support inclined support base 461 is adapted to support the first rear-support inclined rod 1313 in an inclined manner, and the first rear-support inclined electromagnet 462 is adapted to fix the first rear-support inclined rod 1313 on the first rear-support inclined support base 461 in an adsorbing manner;

the second rear inclined supporting clamp 47 includes a second rear inclined supporting seat 471 and a second rear inclined supporting electromagnet 472, the second rear inclined supporting electromagnet 472 is fixedly disposed on the second rear inclined supporting seat 471, the second rear inclined supporting seat 471 is adapted to support the second rear inclined supporting rod 1314 in an inclined manner, and the second rear inclined supporting electromagnet 472 is adapted to fix the second rear inclined supporting rod 1314 on the second rear inclined supporting seat 471 in an adsorbing manner;

specifically, in order to adapt to sofa back support frames with different lengths, the welding fixture of the utility model further comprises a back support frame welding bottom plate 48, a first sliding plate 481, a second sliding plate 482, a third sliding plate 483, a fourth sliding plate 484 and a fifth sliding plate 485; the rear support frame welding bottom plate 48 is provided with slide rails, and the first sliding plate 481, the second sliding plate 482, the third sliding plate 483, the fourth sliding plate 484 and the fifth sliding plate 485 are movably arranged on the rear support frame welding bottom plate 48 through the slide rails;

the first rear supporting clamp 51, the fourth rear supporting clamp 54 and the third rear supporting transverse clamp 43 are mounted on the first sliding plate 481; the first rear-support inclined clamp 46 and the sixth rear-support vertical clamp 56 are mounted on the second sliding plate 482; the second rear supporting vertical clamp 52 and the fourth rear supporting horizontal clamp 44 are arranged on the third sliding plate 483; the seventh rear supporting vertical clamp 57 and the second rear supporting inclined clamp 47 are installed on the fourth sliding plate 484; the fifth rear supporting fixture 55, the third rear supporting fixture 53 and the fifth rear supporting transverse fixture 45 are mounted on the fifth sliding plate 485.

During operation, a feeding robot places the first rear support cross bar 1301 on each first rear support cross support block 411, and then fixes the first rear support cross bar 1301 on the first rear support cross support block 411 through the first rear support cross electromagnet 413 and the first rear support cross cylinder 414;

then, a third back support cross rod 1303 is placed on the third back support cross support 431, and the third back support cross rod 1303 is clamped on the third back support cross support 431 through a first back support cross cylinder 432 and a second back support cross cylinder 433;

then, the fourth rear support cross bar 1304 is placed on the fourth rear support cross support base 441, and the fourth rear support cross bar 1304 is clamped on the fourth rear support cross support base 441 by the fourth rear support cross electromagnet 442 and the fourth rear support cross cylinder 443;

then, the fifth back support cross bar 1305 is placed on the fifth back support cross support seat 451, and the fifth back support cross bar 1305 is clamped on the fifth back support cross support seat 451 through the fifth back support cross cylinder I452 and the fifth back support cross cylinder II 453;

then, the second back support crossbars 1302 are placed on each second back support cross support block 421, and then the second back support crossbars 1302 are fixed on the second back support cross support blocks 421 by the second back support crossbars 423 and the second back support crossbars 424;

next, placing seven back support upright rods on each back support cross rod, and respectively clamping by respective back support clamps; finally, placing the two rear support inclined rods on respective rear support inclined supporting seats, and fixing the rear support inclined rods by respective rear support inclined electromagnets;

after the rods are clamped and fixed, the rods are welded together by a welding robot, so that a complete sofa back support frame is obtained;

the utility model discloses a sofa back-support frame welding jig can press from both sides tightly fixedly respectively to each member in the constitution sofa back-support frame, then carries out unified welding by welding robot, makes the sofa back-support frame quality that the welding came out unified, realizes the production of sofa back-support frame mass production, also promotes the production efficiency to sofa back-support frame simultaneously.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (3)

1. A sofa back support frame welding clamp is characterized in that,

the sofa rear support frame comprises a first rear support cross rod, a second rear support cross rod, a third rear support cross rod, a fourth rear support cross rod, a fifth rear support cross rod, a first rear support upright rod, a second rear support upright rod, a third rear support upright rod, a fourth rear support upright rod, a fifth rear support upright rod, a sixth rear support upright rod, a seventh rear support upright rod, a first rear support inclined rod and a second rear support inclined rod; the first rear support cross rod, the second rear support cross rod, the third rear support cross rod and the fifth rear support cross rod form a rectangular frame, and the fourth rear support cross rod is arranged between the first rear support cross rod and the second rear support cross rod; the first rear support upright rod is arranged below the joint of the first rear support cross rod and the third rear support cross rod; the second rear support upright rod is arranged below the first rear support cross rod; the third rear support upright rod is arranged below the joint of the first rear support cross rod and the fifth rear support cross rod; the fourth rear support upright rod is arranged below the joint of the second rear support cross rod and the third rear support cross rod; the fifth rear support vertical rod is arranged below the joint of the second rear support cross rod and the fifth rear support cross rod; the sixth rear support vertical rod is arranged below the second rear support cross rod, and the first rear support inclined rod is connected with the sixth rear support vertical rod; the seventh rear support vertical rod is arranged below the second rear support cross rod, and the second rear support inclined rod is connected with the seventh rear support vertical rod;

the rear support frame welding fixture comprises a first rear support transverse fixture, a second rear support transverse fixture, a third rear support transverse fixture, a fourth rear support transverse fixture, a fifth rear support transverse fixture, a first rear support vertical fixture, a second rear support vertical fixture, a third rear support vertical fixture, a fourth rear support vertical fixture, a fifth rear support vertical fixture, a sixth rear support vertical fixture, a seventh rear support vertical fixture, a first rear support inclined fixture and a second rear support inclined fixture;

the first rear support cross clamp is suitable for limiting the displacement of the first rear support cross rod; the second rear support transverse clamp is suitable for limiting the displacement of the second rear support cross rod; the third rear support cross clamp is suitable for limiting the displacement of the third rear support cross rod; the fourth rear support cross clamp is suitable for limiting the displacement of the fourth rear support cross rod; the fifth rear support horizontal clamp is suitable for limiting the displacement of the fifth rear support cross rod;

the first rear supporting vertical clamp is suitable for limiting the displacement of the first rear supporting vertical rod; the second rear support vertical clamp is suitable for limiting the displacement of the second rear support vertical rod; the third rear support vertical clamp is suitable for limiting the displacement of the third rear support vertical rod; the fourth rear support vertical clamp is suitable for limiting the displacement of the fourth rear support vertical rod; the fifth rear supporting vertical clamp is suitable for limiting the displacement of the fifth rear supporting vertical rod; the sixth rear supporting vertical clamp is suitable for limiting the displacement of the sixth rear supporting vertical rod; the seventh rear support vertical clamp is suitable for limiting the displacement of the seventh rear support vertical rod;

the first rear support inclined clamp is suitable for limiting the displacement of the first rear support inclined rod; the second back-brace diagonal clamp is suitable for limiting the displacement of the second back-brace diagonal rod.

2. The welding jig for sofa back frame as set forth in claim 1, wherein,

the first rear support transverse fixture comprises a plurality of first rear support transverse support blocks, a first rear support transverse installation block, a first rear support transverse electromagnet and a first rear support transverse cylinder, and the first rear support transverse electromagnet is arranged on the first rear support transverse installation block;

each first rear support transverse electromagnet is suitable for supporting a first rear support cross rod, the first rear support transverse electromagnet is suitable for vertically adsorbing and fixing the first rear support cross rod, and the first rear support transverse cylinder is suitable for abutting the first rear support cross rod on the first rear support transverse supporting block in the horizontal direction;

the second rear support transverse fixture comprises a plurality of second rear support transverse support blocks, second rear support transverse installation blocks, second rear support transverse electromagnets and second rear support transverse cylinders, and the second rear support transverse electromagnets are arranged on the second rear support transverse installation blocks;

each second rear support transverse electromagnet is suitable for supporting a second rear support cross rod, the second rear support transverse electromagnets are suitable for vertically adsorbing and fixing the second rear support cross rods, and the second rear support transverse cylinder is suitable for abutting the second rear support cross rods on the second rear support transverse supporting blocks in the horizontal direction;

the third rear support transverse clamp comprises a third rear support transverse support seat, a third rear support transverse cylinder I and a third rear support transverse cylinder II, the third rear support transverse support seat is suitable for supporting a third rear support transverse rod, the third rear support transverse cylinder I is suitable for abutting the third rear support transverse rod on the third rear support transverse support seat in the horizontal direction, and the third rear support transverse cylinder II is suitable for vertically abutting the third rear support transverse rod on the third rear support transverse support seat;

the fourth back support transverse clamp comprises a fourth back support transverse support seat, a fourth back support transverse electromagnet and a fourth back support transverse cylinder, the fourth back support transverse support seat is suitable for supporting a fourth back support cross rod, the fourth back support transverse electromagnet is suitable for vertically adsorbing and fixing the fourth back support cross rod, and the fourth back support transverse cylinder is suitable for vertically pressing the fourth back support cross rod on the fourth back support transverse support seat;

the fifth rear support transverse clamp comprises a fifth rear support transverse support seat, a fifth rear support transverse cylinder I and a fifth rear support transverse cylinder II, the fifth rear support transverse support seat is suitable for supporting a fifth rear support transverse rod, the fifth rear support transverse cylinder I is suitable for abutting the fifth rear support transverse rod on the fifth rear support transverse support seat in the horizontal direction, and the fifth rear support transverse cylinder II is suitable for abutting the fifth rear support transverse rod on the fifth rear support transverse support seat in the vertical direction;

the first rear supporting vertical clamp comprises a first rear supporting vertical cylinder, a second rear supporting vertical cylinder, a first rear supporting vertical mounting plate, a second rear supporting vertical mounting plate and a first rear supporting vertical electromagnet, a push rod of the first rear supporting vertical cylinder is connected with the first rear supporting vertical mounting plate and the second rear supporting vertical mounting plate, the first rear supporting vertical electromagnet is fixedly arranged on the first rear supporting vertical mounting plate, the second rear supporting vertical cylinder is fixedly arranged on the second rear supporting vertical mounting plate, the first rear supporting vertical electromagnet adsorbs the first rear supporting vertical rod, and the second rear supporting vertical cylinder tightly supports the first rear supporting vertical rod so that the first rear supporting vertical rod is arranged above the joint of the first rear supporting cross rod and the third rear supporting cross rod;

the second rear supporting vertical clamp comprises a second rear supporting vertical cylinder, a second rear supporting vertical mounting plate and a second rear supporting vertical electromagnet, a push rod of the second rear supporting vertical cylinder is connected with the second rear supporting vertical mounting plate, the second rear supporting vertical electromagnet is arranged on the second rear supporting vertical mounting plate, and the second rear supporting vertical electromagnet adsorbs the second rear supporting vertical rod so that the second rear supporting vertical rod is arranged above the first rear supporting cross rod;

the third rear supporting vertical clamp comprises a first third rear supporting vertical cylinder, a second third rear supporting vertical cylinder, a first third rear supporting vertical mounting plate, a second third rear supporting vertical mounting plate and a third rear supporting vertical electromagnet, a push rod of the first third rear supporting vertical cylinder is connected with the first third rear supporting vertical mounting plate and the second third rear supporting vertical mounting plate, the third rear supporting vertical electromagnet is fixedly arranged on the first third rear supporting vertical mounting plate, the second third rear supporting vertical cylinder is fixedly arranged on the second third rear supporting vertical mounting plate, the third rear supporting vertical electromagnet adsorbs the third rear supporting vertical rod, and the second third rear supporting vertical cylinder tightly supports the third rear supporting vertical rod so that the third rear supporting vertical rod is arranged above the joint of the first rear supporting cross rod and the fifth rear supporting cross rod;

the fourth rear supporting vertical clamp comprises a fourth rear supporting vertical cylinder I, a fourth rear supporting vertical cylinder II, a fourth rear supporting vertical mounting plate I, a fourth rear supporting vertical mounting plate II and a fourth rear supporting vertical electromagnet, a push rod of the fourth rear supporting vertical cylinder I is connected with the fourth rear supporting vertical mounting plate I and the fourth rear supporting vertical mounting plate II, the fourth rear supporting vertical electromagnet is fixedly arranged on the fourth rear supporting vertical mounting plate I, the fourth rear supporting vertical cylinder II is fixedly arranged on the fourth rear supporting vertical mounting plate II, the fourth rear supporting vertical electromagnet adsorbs the fourth rear supporting vertical rod, and the fourth rear supporting vertical cylinder II tightly supports the fourth rear supporting vertical rod so that the fourth rear supporting vertical rod is arranged above the joint of the second rear supporting cross rod and the third rear supporting cross rod;

the fifth rear supporting vertical clamp comprises a fifth rear supporting vertical cylinder I, a fifth rear supporting vertical cylinder II, a fifth rear supporting vertical mounting plate I, a fifth rear supporting vertical mounting plate II and a fifth rear supporting vertical electromagnet, a push rod of the fifth rear supporting vertical cylinder I is connected with the fifth rear supporting vertical mounting plate I and the fifth rear supporting vertical mounting plate II, the fifth rear supporting vertical electromagnet is fixedly arranged on the fifth rear supporting vertical mounting plate I, the fifth rear supporting vertical cylinder II is fixedly arranged on the fifth rear supporting vertical mounting plate II, the fifth rear supporting vertical electromagnet adsorbs a fifth rear supporting vertical rod, and the fifth rear supporting vertical cylinder II tightly supports the fifth rear supporting vertical rod, so that the fifth rear supporting vertical rod is arranged above the joint of the second rear supporting cross rod and the fifth rear supporting cross rod;

the sixth rear supporting vertical clamp comprises a sixth rear supporting vertical cylinder, a sixth rear supporting vertical mounting plate and a sixth rear supporting vertical electromagnet, a push rod of the sixth rear supporting vertical cylinder is connected with the sixth rear supporting vertical mounting plate, the sixth rear supporting vertical electromagnet is arranged on the sixth rear supporting vertical mounting plate, and the sixth rear supporting vertical electromagnet adsorbs the sixth rear supporting vertical rod so that the sixth rear supporting vertical rod is arranged above the second rear supporting cross rod;

the seventh rear supporting vertical clamp comprises a seventh rear supporting vertical cylinder, a seventh rear supporting vertical mounting plate and a seventh rear supporting vertical electromagnet, a push rod of the seventh rear supporting vertical cylinder is connected with the seventh rear supporting vertical mounting plate, the seventh rear supporting vertical electromagnet is arranged on the seventh rear supporting vertical mounting plate, and the seventh rear supporting vertical electromagnet adsorbs the seventh rear supporting vertical rod so that the seventh rear supporting vertical rod is arranged above the second rear supporting cross rod;

the first rear-support inclined clamp comprises a first rear-support inclined supporting seat and a first rear-support inclined electromagnet, the first rear-support inclined electromagnet is fixedly arranged on the first rear-support inclined supporting seat, the first rear-support inclined supporting seat is suitable for obliquely supporting a first rear-support inclined rod, and the first rear-support inclined electromagnet is suitable for adsorbing and fixing the first rear-support inclined rod on the first rear-support inclined supporting seat;

the second back-supporting inclined fixture comprises a second back-supporting inclined supporting seat and a second back-supporting inclined electromagnet, the second back-supporting inclined electromagnet is fixedly arranged on the second back-supporting inclined supporting seat, the second back-supporting inclined supporting seat is suitable for obliquely supporting the second back-supporting inclined rod, and the second back-supporting inclined electromagnet is suitable for adsorbing and fixing the second back-supporting inclined rod on the second back-supporting inclined supporting seat.

3. The sofa back support frame welding jig of claim 2, further comprising a back support frame welding bottom plate, a first sliding plate, a second sliding plate, a third sliding plate, a fourth sliding plate and a fifth sliding plate;

the rear support frame welding bottom plate is provided with a sliding rail, and the first sliding plate, the second sliding plate, the third sliding plate, the fourth sliding plate and the fifth sliding plate are movably arranged on the rear support frame welding bottom plate through the sliding rail;

the first rear supporting vertical clamp, the fourth rear supporting vertical clamp and the third rear supporting transverse clamp are arranged on the first sliding plate;

the first rear support inclined clamp and the sixth rear support vertical clamp are arranged on the second sliding plate;

the second rear support vertical clamp and the fourth rear support transverse clamp are arranged on the third sliding plate;

the seventh rear support vertical clamp and the second rear support inclined clamp are arranged on the fourth sliding plate;

and the fifth rear support vertical clamp, the third rear support vertical clamp and the fifth rear support transverse clamp are arranged on the fifth sliding plate.

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