CN211589053U - Automobile B-pillar clamp assembly - Google Patents

Abstract

The utility model discloses an automobile B-column clamp assembly, which comprises a substrate, wherein the substrate is provided with a column clamping component and a beam clamping component, the column clamping component comprises a plurality of column clamping units, and the beam clamping component is sequentially arranged along the trend of the rear edge of a beam from right to left by a first bulge positioning unit, a first beam clamping unit, a B-column positioning block positioning unit, a second beam clamping unit, a second bulge positioning unit and a third beam clamping unit; the utility model discloses when fixed with the stand and the crossbeam of car B post, a plurality of widgets are also put in proper order and are fixed in first bellying positioning unit, B post locating piece positioning unit and second bellying positioning unit, avoid manual location's mode, have improved the location accuracy, save time manpower and the cost of trading one set of anchor clamps welding widget again.

Description

Automobile B-pillar clamp assembly

Technical Field

The utility model belongs to car work piece anchor clamps field, concretely relates to car B post anchor clamps assembly.

Background

The automobile B column is short for the automobile body pillar. The B column is arranged between a front seat and a rear seat of the cab, namely a longitudinal bar between two doors on two sides and extends from the roof to the bottom of the vehicle. As shown in fig. 18 and 19, car B post, including the T shape structure that stand and crossbeam welding are constituteed, be equipped with a plurality of mounting hole on stand and the crossbeam, the welding has first bellying on the crossbeam, B post locating piece and second bellying, the shorter section in crossbeam right is two first bellyings, the longer section in crossbeam left side is two second bellyings, the interval of first bellying and B post locating piece is shorter, the solder joint is more, both need carry out firm centre gripping to the work piece, still keep sufficient space so that welder's entering. In the machining process, parts such as the upright column, the cross beam, the first boss, the B column positioning block, the second boss and the like need to be welded; the existing clamp has the following problems: some widgets (such as first boss, B post locating piece, second boss) can not weld the shaping on same set of anchor clamps and have caused cost and artificial waste, and handheld widget welding can reduce the machining precision. If adopt traditional anchor clamps to press from both sides tight widget, need to adopt double-cylinder anchor clamps, the rising and the decline of a cylinder control layering are used for compressing tightly the crossbeam, and the layering side is located to another cylinder for the locating pin of control location widget, but because the interval of first bellying and B post locating piece is shorter, if want two first bellyings of centre gripping, need install two traditional double-cylinder anchor clamps, the cylinder has invaded and has occupied welder's space, hinders welder's entering, can't carry out welding operation.

Disclosure of Invention

The utility model aims at solving the technical problem, provide a car B post anchor clamps assembly convenient to welder gets into, the centre gripping stability is good, the machining precision is high, can reduce cost, can fast switch over anchor clamps and then improve work efficiency.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

an automobile B-column clamp assembly comprises a base plate, wherein an upright column clamping assembly and a cross beam clamping assembly are arranged on the base plate, the upright column clamping assembly comprises a plurality of upright column clamping units, and the cross beam clamping assembly is formed by sequentially arranging a first bulge positioning unit, a first cross beam clamping unit, a B-column positioning block positioning unit, a second cross beam clamping unit, a second bulge positioning unit and a third cross beam clamping unit from right to left along the trend of the rear edge of a cross beam; the first boss positioning unit comprises a first main mounting frame arranged on the base plate, a first driving device is arranged on the first main mounting frame, a driving rod of the first driving device extends and retracts towards the lower oblique direction, a first moving plate is fixedly connected to the driving rod, a first contraction limiting device is arranged in the return stroke of the first moving plate, and the first contraction limiting device is connected with the first main mounting frame; the left end and the right end of the first movable plate are respectively provided with a group of first bulge fixing devices, the structures of the first bulge fixing devices are consistent and in mirror symmetry, each group of first bulge fixing devices comprises a first oblique support, the first oblique support is connected with the first movable plate, a first bulge fixing groove is formed in the first oblique support, a first bulge positioning pin inserted into the first bulge mounting hole is arranged in the first bulge fixing groove, and a first protection plate is arranged beside the first bulge fixing groove; a first cross beam lower pressing block is arranged between the two groups of first lug boss fixing devices and fixedly connected with the first moving plate; a first flanging front clamping block for clamping the flanging of the cross beam is arranged behind the first cross beam lower pressing block and is connected with the first main mounting frame;

the first cross beam clamping unit comprises a transverse pressing strip and a second driving device for driving the transverse pressing strip to be pressed and opened up and down, the second driving device is arranged on a second main mounting frame, and the second main mounting frame is arranged on the substrate; one end of the transverse pressing bar extends into the first boss positioning unit and is provided with a first cross beam upper pressing block matched with the first cross beam lower pressing block, and a first flanging rear clamping block matched with the first flanging front clamping block is further arranged behind the transverse pressing bar at the end; a first cross beam positioning pin inserted into the cross beam mounting hole is arranged right below the pressing block on the first cross beam mounting hole, the first cross beam positioning pin is arranged on a positioning pin mounting seat I, and the positioning pin mounting seat I is fixedly connected with a second main mounting frame;

the positioning unit of the B-column positioning block comprises a third main mounting frame arranged on the base plate, a third driving device is arranged on the third main mounting frame, a driving rod of the third driving device horizontally stretches, the front end of the driving rod of the third driving device is fixedly connected with a second movable plate, a first extension limiting device is arranged in the advancing stroke of the second movable plate, and the first extension limiting device is connected with the third main mounting frame; the clamping block behind two B post locating pieces is symmetrically arranged on the second movable plate, a B post locating piece locating pin inserted into a B post locating piece mounting hole is arranged on the B post locating piece rear clamping block, a B post locating piece front clamping block is arranged in front of the B post locating piece rear clamping block, the B post locating piece front clamping block is arranged on a clamping block support, and the clamping block support is connected with a third main mounting frame.

As a further technical scheme, the automobile B-column clamp assembly further comprises a reference positioning unit, a traveling device is arranged below the substrate, the reference positioning unit comprises a positioning frame detachably connected with the ground, an opening facilitating the traveling device to enter and exit is formed in one side of the positioning frame, positioning pin mounting seats viii are symmetrically arranged on the left and right sides of the opening, the positioning pin mounting seats viii are fixed on the positioning frame, at least two traveling device positioning pins are arranged on each positioning pin mounting seat viii, the traveling device positioning pins are arranged on vertical telescopic rods of a thirteenth driving device, the thirteenth driving device is fixed on the positioning frame, a traveling device limiting block for stopping the traveling device positioning pins is arranged right above the traveling device positioning pins, and the traveling device limiting block is connected with the positioning pin mounting seats viii; the edge of the walking device is fixedly connected with a walking device positioning block with a positioning hole, the walking device positioning block corresponds to the walking device positioning pin in position one to one and is positioned between the corresponding walking device positioning pin and the walking device limiting block, the walking device positioning pin is small in size and large in size, and the small part is consistent with the radius of the positioning hole.

As a further technical scheme, the second beam clamping unit comprises a second beam upper pressing block and a fourth driving device for driving the second beam upper pressing block to be pressed and opened up and down, the fourth driving device is arranged on a fourth main mounting frame, and the fourth main mounting frame is arranged on the substrate; and a second cross beam lower pressing block matched with the second cross beam upper pressing block is arranged below the second cross beam upper pressing block, a second flanging clamping block is arranged behind the second cross beam lower pressing block, the second cross beam lower pressing block and the second flanging clamping block are arranged on a first pressing block support, and the first pressing block support is fixed on a fourth main mounting frame.

As a further technical scheme, the second beam upper pressing block comprises an L-shaped upper pressing block for pressing the front edge of the beam and an F-shaped upper pressing block for pressing the rear edge of the beam, the fourth driving device is connected with the F-shaped upper pressing block, and the L-shaped upper pressing block is arranged at the front end of the F-shaped upper pressing block; the second cross beam lower pressing block comprises two L-shaped lower pressing blocks corresponding to the L-shaped upper pressing block and the F-shaped upper pressing block; the second flanging clamping block comprises a second flanging front clamping block and a second flanging rear clamping block, the second flanging front clamping block is connected with the L-shaped lower pressing block corresponding to the F-shaped upper pressing block, and the second flanging rear clamping block is connected with the F-shaped upper pressing block.

As a further technical solution, the second protrusion positioning unit includes a fifth main mounting frame disposed on the base plate, a fifth driving device is disposed on the fifth main mounting frame, a driving rod of the fifth driving device extends and retracts toward an oblique lower direction, a third moving plate is fixedly connected to the driving rod, a second retraction limiting device is disposed in a retraction stroke of the third moving plate, and the second retraction limiting device is connected to the fifth main mounting frame; a group of second boss fixing devices are respectively arranged at the left end and the right end of the third moving plate, the structures of the second boss fixing devices are consistent and mirror-symmetrical, each group of second boss fixing devices comprises a second oblique support, the second oblique support is connected with the third moving plate, a second boss fixing groove is formed in the second oblique support, a B column positioning block positioning pin inserted into a second boss mounting hole is arranged in the second boss fixing groove, and a second protection plate is arranged beside the second boss fixing groove; the second beam positioning pin inserted into the corresponding beam mounting hole is arranged between the two sets of second boss fixing devices, the second beam positioning pin is mounted on the positioning pin mounting seat II, the positioning pin mounting seat II is connected with the fifth main mounting frame, the second oblique support is the same as the first oblique support in structure, and the second contraction limiting device is the same as the first contraction limiting device in structure.

As a further technical scheme, the third beam clamping unit comprises an L-shaped pressing strip matched with the corner shape of the tail end of the beam and a sixth driving device for driving the L-shaped pressing strip to be pressed and opened up and down, the sixth driving device is arranged on a sixth main mounting frame, and the sixth main mounting frame is arranged on the substrate; and two ends of the L-shaped pressing strip are respectively provided with a third cross beam upper pressing block, a third cross beam lower pressing block matched with the third cross beam upper pressing block is arranged below the third cross beam upper pressing block, the third cross beam lower pressing block is arranged on a second pressing block support, and the second pressing block support is connected with a sixth main mounting frame.

As a further technical solution, the first oblique support includes two L-shaped modules, a transverse edge of one of the L-shaped modules is connected to the first moving plate, a vertical edge of the other L-shaped module is connected to an outer side of the vertical edge, and a first protrusion fixing groove is formed in the transverse edge of the other L-shaped module.

As a further technical scheme, the first contraction limiting device comprises a first contraction limiting block and a first connecting block, the first contraction limiting block is connected with the first main mounting frame through the first connecting block, the first contraction limiting block is arranged in the return stroke of the first moving plate, after the driving rod of the first driving device contracts, the first contraction limiting block abuts against the inner surface of the first moving plate, and the first protruding portion reaches the welding position; the reciprocating stroke of the first moving plate is smaller than that of the driving rod of the first driving device.

As a further technical scheme, the first extension limiting device comprises a first extension limiting block and a second connecting block, the first extension limiting block is arranged in an extension stroke of the second moving plate and is connected with the third main mounting frame through the second connecting block, when the driving rod of the third driving device extends, the first extension limiting block abuts against the outer surface of the second moving plate, and the rear clamping block of the B-column positioning block is clamped with the front clamping block of the B-column positioning block; the reciprocating stroke of the second moving plate is smaller than that of the driving rod of the third driving device.

As a further technical solution, the first driving device, the second driving device, the third driving device, the fourth driving device, the fifth driving device and the sixth driving device are all driven by air cylinders.

As a further technical scheme, the reference positioning unit comprises a positioning frame, one side of the positioning frame is provided with an opening for the passing in and out of an automobile column B clamp assembly, four corners of the positioning frame are respectively provided with a support sheet and a bolt connecting device, positioning pin mounting seats viii are symmetrically arranged on the left and right of the opening, the positioning pin mounting seats viii are fixed on the positioning frame, each positioning pin mounting seat viii is provided with at least two walking device positioning pins, the walking device positioning pins are arranged on vertical telescopic rods of a thirteenth driving device, the thirteenth driving device is fixed on the positioning frame, walking device limiting blocks for stopping the walking device positioning pins are arranged right above the walking device positioning pins, and the walking device limiting blocks are connected with the positioning pin mounting seats viii; the method comprises the following steps that a walking device is arranged below a base plate of an automobile B-column clamp assembly, a walking device positioning block with a positioning hole is fixedly connected to the edge of the walking device, the positions of the walking device positioning block and a walking device positioning pin correspond to each other one by one and are located between the corresponding walking device positioning pin and a walking device limiting block, the walking device positioning pin is small in size and large in size, and the small part of the walking device positioning pin is consistent with the radius of the positioning hole; the thirteenth driving device is driven by a cylinder.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses when fixed with the stand and the crossbeam of car B post, a plurality of widgets are also put in proper order and are fixed in first bellying positioning unit, B post locating piece positioning unit and second bellying positioning unit, avoid manual location's mode, have improved the location accuracy, save time, manpower and the cost of trading one set of anchor clamps welding widget again.

2. The utility model discloses a conventional centre gripping unit carries out the centre gripping to the stand to corresponding positioning unit and centre gripping unit have been designed to crossbeam and widget, and the common fixed car B post of these structures restricts its degree of freedom in the three direction of XYZ, so that the small of welding process of avoiding rocks or removes, improves the clamping stability to car B post, improves the machining precision to car B post.

3. The utility model discloses beam clamping assembly carries out synchronous location and centre gripping to crossbeam, first bellying, B post locating piece and second bellying, and first bellying positioning element designs first bellying fixed slot and fixes first bellying, has designed briquetting and clamp splice to the crossbeam simultaneously; the first beam clamping unit is used as an upper pressure arm and matched with the first boss positioning unit to compress the beam up and down and back and forth, the second beam clamping unit compresses the beam up and down and back and forth, and the third beam clamping unit compresses the corners of the beam up and down, so that the clamping stability is improved; simultaneously the utility model discloses still design first crossbeam locating pin and second crossbeam locating pin, carry out accurate location to the crossbeam, improved the precision of processing.

4. The utility model discloses a two first bellyings in cylinder control location, two B post locating pieces in a cylinder control location, the centre gripping of the first crossbeam centre gripping unit of deuterogamying compresses tightly for the other enough space that all has of the welding point of first bellyings and B post locating piece lets welder get into, has solved traditional two cylinder anchor clamps and has fixed a position single widget, influences the problem that welding space leads to welder to get into.

5. The utility model discloses an application area is wider. The utility model designs a benchmark positioning unit, not only can be used to manual welding location, but also can be used to benchmark location of numerical control processing, the location of processing position is carried out through the location frame, the fixture on the base plate is brought into the location frame from the opening through the running gear, and is fixed by the running gear locating pin, thus realizing the accurate welding position location of the automobile B-pillar fixture assembly, reducing the resource waste condition of manpower multiple adjustment, and improving the processing efficiency; after processing, the running gear locating pin shrink can be transferred running gear, releases from the opening, and a set of anchor clamps of taking running gear push and continue to weld next, has realized the fast switch-over of anchor clamps.

Drawings

Fig. 1 is a schematic front structural view of the B-pillar clamp assembly of the present invention;

fig. 2 is a schematic view of a back structure of the B-pillar clamp assembly of the present invention;

fig. 3 is a schematic structural view of the combination of the first boss positioning unit, the first beam clamping unit and the B-pillar positioning block positioning unit of the present invention;

fig. 4 is a schematic structural view of the first protrusion positioning unit of the present invention;

wherein (i) the front side, (ii) the side, (iii) the back side;

fig. 5 is a schematic structural view of the first beam clamping unit of the present invention;

wherein (i) the front face, (ii) the side face;

FIG. 6 is a schematic structural view of a positioning unit of a B-pillar positioning block of the present invention;

wherein (i) the front face, (ii) the side face;

fig. 7 is a schematic structural view of a second beam clamping unit according to the present invention;

fig. 8 is a schematic structural view of a second boss positioning unit according to the present invention;

wherein (i) the front face, (ii) the side face;

fig. 9 is a schematic structural view of a third beam clamping unit of the present invention;

fig. 10 is a schematic structural view of a first pillar clamping unit according to the present invention;

FIG. 11 is a partially enlarged view of the first pillar clamping unit at the portion A of FIG. 2;

fig. 12 is a schematic structural view of a second pillar clamping unit according to the present invention;

fig. 13 is a schematic structural view of a third pillar clamping unit according to the present invention;

FIG. 14 is a partial enlarged view of a third column clamping unit at the portion B of FIG. 2;

fig. 15 is a schematic structural view of a fourth pillar clamping unit according to the present invention;

FIG. 16 is an enlarged view of a portion of the fourth column clamping unit at section C of FIG. 1;

fig. 17 is a schematic structural view of the independent positioning unit of the present invention;

FIG. 18 is a front view of the B-pillar of the vehicle;

FIG. 19 is a schematic reverse side view of the vehicle B-pillar;

fig. 20 is a use state diagram of the automobile B-pillar clamp assembly according to embodiment 1 of the present invention;

fig. 21 is a schematic structural diagram of the datum positioning unit of the present invention;

fig. 22 is a use state diagram of the B-pillar clamp assembly for an automobile according to embodiment 2 of the present invention.

Reference numerals:

1-a substrate;

2-a first lug boss positioning unit, 2.1-a first main mounting frame, 2.2-a first driving device, 2.3-a first moving plate, 2.4-a first contraction limiting device, 2.41-a first contraction limiting block, 2.42-a first connecting block, 2.5-a first oblique support, 2.6-a first lug boss fixing groove, 2.7-a first lug boss positioning pin, 2.8-a first protection plate, 2.9-a first cross beam lower pressing block and 2.10-a first flanging front clamping block;

3-a first beam clamping unit, 3.1-a second main mounting frame, 3.2-a second driving device, 3.3-a transverse layering, 3.4-a first beam upper pressing block, 3.5-a first flanging rear clamping block, 3.6-a first beam mounting hole upper pressing block, 3.7-a first beam positioning pin and 3.8-a positioning pin mounting seat I;

4-B column positioning block positioning unit, 4.1-third main mounting frame, 4.2-third driving device, 4.3-second moving plate, 4.4-first extending limiting device, 4.41-first extending limiting block, 4.42-second connecting block, 4.5-B column positioning block rear clamping block, 4.6-B column positioning block front clamping block, 4.7-clamping block support and 4.8-B column positioning block positioning pin;

5-a second beam clamping unit, 5.1-a fourth main mounting frame, 5.2-a fourth driving device, 5.3-a second beam upper pressing block, 5.4-a second beam lower pressing block, 5.5-a first flanging front clamping block, 5.6-a first flanging rear clamping block and 5.7-a first pressing block support;

6-a second boss positioning unit, 6.1-a fifth main mounting frame, 6.2-a fifth driving device, 6.3-a third moving plate, 6.4-a second contraction limiting device, 6.41-a second contraction limiting block, 6.42-a third connecting block, 6.5-a second oblique support, 6.6-a second boss fixing groove, 6.7-a second cross beam positioning pin, 6.8-a second protection plate, 6.9-a second boss positioning pin and 6.10-a positioning pin mounting seat II;

7-a third beam clamping unit, 7.1-a sixth main mounting frame, 7.2-a sixth driving device, 7.3-an L-shaped pressing strip, 7.4-a third beam upper pressing block, 7.5-a third beam lower pressing block and 7.6-a second pressing block support;

8-a first upright post clamping unit, 8.1-a seventh main mounting frame, 8.2-a seventh driving device, 8.3-a first longitudinal pressing strip, 8.4-a first upright post upper pressing block, 8.5-a first upright post lower pressing block, 8.6-a third pressing block support, 8.7-a positioning pin mounting seat III and 8.8-a first upright post positioning pin;

9-a second upright post clamping unit, 9.1-an eighth main mounting frame, 9.2-an eighth driving device, 9.3-a second longitudinal pressing strip, 9.4-a second upright post upper pressing block, 9.5-a second upright post lower pressing block, 9.6-a fourth pressing block support, 9.7-a positioning pin mounting seat IV and 9.8-a second upright post positioning pin;

10-a third upright post clamping unit, 10.1-a ninth main mounting frame, 10.2-a ninth driving device, 10.3-a third longitudinal pressing strip, 10.4-a third upright post upper pressing block, 10.5-a third upright post lower pressing block, 10.6-a fifth pressing block support, 10.7-a fourth moving plate, 10.8-a tenth driving device, 10.9-a second elongation limiting device, 10.91-a second elongation limiting block, 10.92-a fourth connecting block, 10.10-a positioning pin mounting seat V and 10.11-a third upright post positioning pin;

11-a fourth upright post clamping unit, 11.1-a tenth main mounting frame, 11.2-an eleventh driving device, 11.3-a fourth longitudinal pressing bar, 11.4-a fourth upright post upper pressing block, 11.5-a fourth upright post lower pressing block, 11.6-a sixth pressing block support, 11.7-a positioning pin mounting seat VI, 11.8-a fourth upright post positioning pin, 11.9-a third elongation limiting device, 11.91-a third elongation limiting block, 11.92-a fifth connecting block, 11.10-a fifth moving plate, 11.11-a twelfth driving device and 11.12-a sixth connecting block;

12-an independent positioning unit, 12.1-an eleventh main mounting frame, 12.2-a positioning pin mounting seat VII, 12.3-a fifth upright post positioning pin;

13-automobile B column, 13.1-beam, 13.2-column, 13.3-first boss, 13.4-B column positioning block, and 13.5-second boss;

14-a reference positioning unit, 14.1-a positioning frame, 14.2-a support sheet, 14.3-a bolt connecting device, 14.4-a positioning pin mounting seat VIII, 14.5-a thirteenth driving device, 14.6-a walking device positioning pin and 14.7-a walking device limiting block;

15-a walking device and 16-a walking device positioning block.

Detailed Description

The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited to the scope of the examples.

Example 1:

as shown in fig. 1-3, an automobile B-pillar clamp assembly includes a substrate 1, a pillar clamping assembly and a beam clamping assembly are disposed on the substrate 1, the pillar clamping assembly includes a plurality of pillar clamping units, the pillar clamping units are a first pillar clamping unit 8, a second pillar clamping unit 9, a third pillar clamping unit 10, a fourth pillar clamping unit 11 and an independent positioning unit 12, which are sequentially arranged along the head end of a pillar 13.2 toward the beam 13.1, and the beam clamping assembly is sequentially arranged from right to left along the rear edge of the beam 13.1 by a first bump positioning unit 2, a first beam clamping unit 3, a B-pillar positioning block positioning unit 4, a second beam clamping unit 5, a second bump positioning unit 6 and a third beam clamping unit 7.

As shown in fig. 4, the first protrusion positioning unit 2 includes a first main mounting frame 2.1 disposed on the base plate 1, a first driving device 2.2 is disposed on the first main mounting frame 2.1, a driving rod of the first driving device 2.2 extends and retracts toward an oblique lower direction, a first moving plate 2.3 is fixedly connected to the driving rod, a first contraction limiting device 2.4 is disposed in a return stroke of the first moving plate 2.3, and the first contraction limiting device 2.4 is connected to the first main mounting frame 2.1; a group of first bulge fixing devices are respectively arranged at the left end and the right end of the first moving plate 2.3, the structures of the first bulge fixing devices are consistent and mirror-symmetrical, each group of first bulge fixing devices comprises a first oblique support 2.5, the first oblique support 2.5 is connected with the first moving plate 2.3, a first bulge fixing groove 2.6 is arranged on the first oblique support 2.5, a first bulge positioning pin 2.7 inserted into the first bulge mounting hole is arranged in the first bulge fixing groove 2.6, and a first protection plate 2.8 is arranged beside the first bulge fixing groove 2.6; a first cross beam lower pressing block 2.9 is arranged between the two groups of first lug boss fixing devices, and the first cross beam lower pressing block 2.9 is fixedly connected with the first moving plate 2.3; a first flanging front clamping block 2.10 for clamping the flanging of the cross beam is arranged behind the first cross beam lower pressing block 2.9, and the first flanging front clamping block 2.10 is connected with the first main mounting frame 2.1; the first oblique support 2.5 comprises two L-shaped modules, the transverse edge of one L-shaped module is connected with the first moving plate 2.3, the outer side of the vertical edge is connected with the vertical edge of the other L-shaped module, and the transverse edge of the other L-shaped module is provided with a first protruding part fixing groove 2.6. The first contraction limiting device 2.4 comprises a first contraction limiting block 2.41 and a first connecting block 2.42, the first contraction limiting block 2.41 is connected with the first main mounting frame 2.1 through the first connecting block 2.42, the first contraction limiting block 2.41 is arranged in the return stroke of the first moving plate 2.3, when the driving rod of the first driving device 2.2 contracts, the first contraction limiting block 2.41 abuts against the inner surface of the first moving plate 2.3, and the first protruding part reaches the welding position; the round trip of the first moving plate 2.3 is smaller than the round trip of the driving rod of the first driving device 2.2.

As shown in fig. 5, the first beam clamping unit 3 includes a transverse pressing bar 3.3 and a second driving device 3.2 for driving the transverse pressing bar 3.3 to vertically press and open, the second driving device 3.2 is arranged on a second main mounting frame 3.1, and the second main mounting frame 3.1 is arranged on the substrate 1; one end of the transverse pressing bar 3.3 extends into the first lug boss positioning unit 2 and is provided with a first cross beam upper pressing block 3.4 matched with the first cross beam lower pressing block 2.9, and a first flanging rear clamping block 3.5 matched with the flanging front clamping block is also arranged behind the transverse pressing bar 3.3 at the end; the other end of the transverse pressing bar 3.3 is provided with a first cross beam mounting hole upper press block 3.6 corresponding to the cross beam mounting hole, a first cross beam positioning pin 3.7 inserted into the cross beam mounting hole is arranged under the first cross beam mounting hole upper press block 3.6, the first cross beam positioning pin 3.7 is installed on a positioning pin mounting seat I3.8, and the positioning pin mounting seat I3.8 is fixedly connected with a second main mounting frame 3.1.

As shown in fig. 6, the B-pillar positioning block positioning unit 4 includes a third main mounting frame 4.1 disposed on the base plate 1, a third driving device 4.2 is disposed on the third main mounting frame 4.1, a driving rod of the third driving device 4.2 horizontally extends, a front end of the driving rod is fixedly connected to a second moving plate 4.3, a first extension limiting device 4.4 is disposed in a forward stroke of the second moving plate 4.3, and the first extension limiting device 4.4 is connected to the third main mounting frame 4.1; two B-column positioning block rear clamping blocks 4.5 are symmetrically arranged on the second moving plate 4.3, B-column positioning block positioning pins 4.8 inserted into B-column positioning block mounting holes are arranged on the B-column positioning block rear clamping blocks 4.5, a B-column positioning block front clamping block 4.6 is arranged in front of the B-column positioning block rear clamping block 4.5, the B-column positioning block front clamping block 4.6 is arranged on a clamping block support 4.7, and the clamping block support 4.7 is connected with a third main mounting frame 4.1. The first extending limiting device 4.4 comprises a first extending limiting block 4.41 and a second connecting block 4.42, the first extending limiting block 4.41 is connected with the third main mounting frame 4.1 through the second connecting block 4.42, the first extending limiting block 4.41 is arranged in the extending stroke of the second moving plate 4.3, when the driving rod of the third driving device 4.2 extends, the first extending limiting block 4.41 abuts against the outer surface of the second moving plate 4.3, and the rear clamping block 4.5 of the B column positioning block is clamped with the front clamping block 4.6 of the B column positioning block; the round trip of the second moving plate 4.3 is smaller than the round trip of the driving rod of the third driving device 4.2.

As shown in fig. 7, the second beam clamping unit 5 includes a second beam upper pressing block 5.3 and a fourth driving device 5.2 for driving the second beam upper pressing block 5.3 to press and open up and down, the fourth driving device 5.2 is disposed on a fourth main mounting frame 5.1, and the fourth main mounting frame 5.1 is disposed on the substrate 1; a second cross beam lower pressing block 5.4 matched with the second cross beam upper pressing block 5.3 is arranged below the second cross beam upper pressing block 5.3, a second flanging clamping block is arranged behind the second cross beam lower pressing block 5.4, the second cross beam lower pressing block 5.4 and the second flanging clamping block are arranged on a first pressing block support, and the first pressing block support is fixed on a fourth main mounting frame 5.1; the second beam upper pressing block 5.3 comprises an L-shaped upper pressing block for pressing the front edge of the beam and an F-shaped upper pressing block for pressing the rear edge of the beam, the fourth driving device 5.2 is connected with the F-shaped upper pressing block, and the L-shaped upper pressing block is arranged at the front end of the F-shaped upper pressing block; the second cross beam lower pressing block 5.4 comprises two L-shaped lower pressing blocks corresponding to the L-shaped upper pressing block and the F-shaped upper pressing block; the second flanging clamping block comprises a second flanging front clamping block 5.5 and a second flanging rear clamping block 5.6, the second flanging front clamping block 5.5 is connected with the L-shaped lower pressing block corresponding to the F-shaped upper pressing block, and the second flanging rear clamping block 5.6 is connected with the F-shaped upper pressing block.

As shown in fig. 8, the second protrusion positioning unit 6 includes a fifth main mounting frame 6.1 disposed on the base plate 1, a fifth driving device 6.2 is disposed on the fifth main mounting frame 6.1, a driving rod of the fifth driving device 6.2 extends and retracts toward an oblique lower direction, a third moving plate 6.3 is fixedly connected to the driving rod, a second contraction limiting device 6.4 is disposed in a contraction stroke of the third moving plate 6.3, and the second contraction limiting device 6.4 is connected to the fifth main mounting frame 6.1; a group of second boss fixing devices are respectively arranged at the left end and the right end of the third moving plate 6.3, the structures of the second boss fixing devices are consistent and symmetrical in a mirror image mode, each group of second boss fixing devices comprises a second oblique support 6.5, the second oblique support 6.5 is connected with the third moving plate 6.3, a second boss fixing groove 6.6 is arranged on the second oblique support 6.5, a second boss positioning pin 6.9 inserted into a second boss mounting hole is arranged in the second boss fixing groove 6.6, and a second protection plate 6.8 is arranged beside the second boss fixing groove 6.6; be equipped with between two sets of second bellying fixing device and insert second crossbeam locating pin 6.7 that corresponds the crossbeam mounting hole, second crossbeam locating pin 6.7 is installed on locating pin mount pad II 6.10, and locating pin mount pad II 6.10 is connected with fifth main mounting bracket 6.1, and second slant support 6.5 is the same with first slant support 2.5 structure, and second shrink stop device 6.4 is the same with first shrink stop device 2.4 structure. The second contraction limiting device 6.4 comprises a second contraction limiting block 6.41 and a third connecting block 6.42, the second contraction limiting block 6.41 is connected with the fifth main mounting frame 6.1 through the third connecting block 6.42, the second contraction limiting block 6.41 is arranged in the return stroke of the third moving plate 6.3, after the driving rod of the fifth driving device 6.2 contracts, the second contraction limiting block 6.41 abuts against the inner surface of the third moving plate 6.3, and the second protruding part 13.5 reaches the welding position; the round trip of the third moving plate 6.3 is smaller than the round trip of the driving rod of the fifth driving device 6.2.

As shown in fig. 9, the third beam clamping unit 7 includes an L-shaped pressing bar 7.3 matching the end corner shape of the beam and a sixth driving device 7.2 driving the L-shaped pressing bar 7.3 to press and open up and down, the sixth driving device 7.2 is disposed on the sixth main mounting frame 7.1, and the sixth main mounting frame 7.1 is disposed on the substrate 1; and third cross beam upper press blocks 7.4 are respectively arranged at two ends of the L-shaped pressing bar 7.3, third cross beam lower press blocks 7.5 matched with the third cross beam upper press blocks 7.4 are arranged below the third cross beam upper press blocks 7.4, the third cross beam lower press blocks 7.5 are arranged on a second press block support 7.6, and the second press block support 7.6 is connected with a sixth main mounting frame 7.1.

As shown in fig. 10 and 11, the first column clamping unit 8 includes a first longitudinal pressing bar 8.3 and a seventh driving device 8.2 for driving the first longitudinal pressing bar 8.3 to press and open up and down, the seventh driving device 8.2 is disposed on a seventh main mounting frame 8.1, and the seventh main mounting frame 8.1 is disposed on the substrate 1; the front end and the rear end of the first longitudinal pressing strip 8.3 are respectively provided with a first upright column upper pressing block 8.4, a first upright column lower pressing block 8.5 matched with the first upright column upper pressing block 8.4 is arranged below the first upright column upper pressing block 8.4, the first upright column lower pressing block 8.5 is arranged on a third pressing block support 8.6, and the third pressing block support 8.6 is connected with a seventh main mounting frame 8.1. The third briquetting support 8.6 is other still to be equipped with two spacer pin mount pads III 8.7, installs first stand locating pin 8.8 on every spacer pin mount pad III 8.7, and first stand locating pin 8.8 aims at the stand mounting hole between first stand centre gripping unit 8 and the second stand centre gripping unit 9.

As shown in fig. 12, the second column clamping unit 9 includes a second longitudinal pressing bar 9.3 and an eighth driving device 9.2 for driving the second longitudinal pressing bar 9.3 to press and open up and down, the eighth driving device 9.2 is disposed on an eighth main mounting frame 9.1, and the eighth main mounting frame 9.1 is disposed on the substrate 1; the front end of the second longitudinal pressing bar 9.3 is provided with a second upright column upper pressing block 9.4, the lower part of the rear end is provided with a bulge, a second upright column lower pressing block 9.5 matched with the second upright column upper pressing block 9.4 and the lower part of the bulge are arranged on the second upright column upper pressing block 9.4, the second upright column lower pressing block 9.5 is arranged on a fourth pressing block support 9.6, and the fourth pressing block support 9.6 is connected with an eighth main mounting frame 9.1. A positioning pin installation seat IV 9.7 is further arranged beside the fourth pressing block support 9.6, a second upright post positioning pin 9.8 is installed on the positioning pin installation seat IV 9.7, and the second upright post positioning pin 9.8 is aligned with an upright post installation hole between the second upright post clamping unit 9 and the third upright post clamping unit 10.

As shown in fig. 13 and 14, the third column clamping unit 10 includes a third longitudinal pressing bar 10.3 and a ninth driving device 10.2 for driving the third longitudinal pressing bar 10.3 to press and open up and down, the ninth driving device 10.2 is disposed on the ninth main mounting frame 10.1, and the ninth main mounting frame 10.1 is disposed on the substrate 1; the front end of the third longitudinal pressing strip 10.3 is provided with a third upright column upper pressing block 10.4, the lower part of the rear end is provided with a bulge, a third upright column lower pressing block 10.5 matched with the third upright column upper pressing block 10.4 and the lower part of the bulge are arranged below the third upright column upper pressing block 10.4, the third upright column lower pressing block 10.5 is installed on a fifth pressing block support 10.6, and the fifth pressing block support 10.6 is connected with a ninth main mounting frame 10.1. A tenth driving device 10.8 and a fourth moving plate 10.7 are arranged below the fifth press block support 10.6, a driving rod of the tenth driving device 10.8 stretches in the vertical direction, the front end of the driving rod is connected with the fourth moving plate 10.7, a second extension limiting device 10.9 is arranged in the ascending stroke of the fourth moving plate 10.7, two positioning pin installation seats V10.10 are arranged on the fourth moving plate 10.7, a third upright positioning pin 10.11 is arranged on the positioning pin installation seat V10.10, and the third upright positioning pin 10.11 aligns to an upright installation hole between the third upright clamping unit 10 and the fourth upright clamping unit 11. The second extending limiting device 10.9 comprises a second extending limiting block 10.91 and a fourth connecting block 10.92, the second extending limiting block 10.91 is arranged in the extending stroke of the fourth moving plate 10.7, the second extending limiting block 10.91 is connected with the ninth main mounting frame 10.1 through the fourth connecting block 10.92, when the driving rod of the tenth driving device 10.8 extends, the second extending limiting block 10.91 abuts against the upper surface of the fourth moving plate 10.7, and the third upright positioning pin 10.11 is inserted into the upright mounting hole; the reciprocating stroke of the fourth moving plate 10.7 is smaller than the reciprocating stroke of the driving rod of the tenth driving device 10.8.

As shown in fig. 15 and 16, the fourth column clamping unit 11 includes a fourth longitudinal pressing bar 11.3 and an eleventh driving device 11.2 for driving the fourth longitudinal pressing bar 11.3 to press and open up and down, the eleventh driving device 11.2 is disposed on the tenth main mounting frame 11.1, and the tenth main mounting frame 11.1 is disposed on the base plate 1; the front end of the fourth longitudinal pressing bar 11.3 is provided with a fourth upright column upper pressing block 11.4, the lower part of the rear end is provided with a bulge, a fourth upright column lower pressing block 11.5 matched with the fourth upright column upper pressing block 11.4 and the lower part of the bulge are arranged below the fourth upright column upper pressing block 11.4 and the bulge, the fourth upright column lower pressing block 11.5 is installed on a sixth pressing block support 11.6, and the sixth pressing block support 11.6 is connected with a tenth main mounting frame 11.1. A twelfth driving device 11.11 and a fifth moving plate 11.10 are arranged beside the sixth pressing block support 11.6, a driving rod of the twelfth driving device 11.11 extends and retracts in the vertical direction, the front end of the driving rod is connected with the fifth moving plate 11.10, a third extending limiting device 11.9 is arranged in the ascending stroke of the fifth moving plate 11.10, a positioning pin installation seat VI 11.7 is arranged on the fifth moving plate 11.10, a fourth upright positioning pin 11.8 is arranged on the positioning pin installation seat VI 11.7, and the fourth upright positioning pin 11.8 aligns to an upright installation hole between the fourth upright clamping unit 11 and the independent positioning unit 12. The third extending limiting device 11.9 comprises a third extending limiting block 11.91 and a fifth connecting block 11.92, the third extending limiting block 11.91 is arranged in the extending stroke of the fifth moving plate 11.10, the third extending limiting block 11.91 is connected with the tenth main mounting frame 11.1 through the fifth connecting block 11.92, when the driving rod of the twelfth driving device 11.11 extends, the third extending limiting block 11.91 abuts against the upper surface of the fifth moving plate 11.10, and the fourth column positioning pin 11.8 is inserted into the column mounting hole; the reciprocating stroke of the fifth moving plate 11.10 is smaller than the reciprocating stroke of the driving rod of the twelfth driving device 11.11; the twelfth drive means 11.11 is fixed to the tenth main mounting 11.1 by means of a sixth connecting block.

As shown in fig. 17, the independent positioning unit 12 includes an eleventh main mounting frame 12.1 disposed on the substrate 1, the eleventh main mounting frame 12.1 is provided with a positioning pin mounting seat vii 12.2, the positioning pin mounting seat vii 12.2 is provided with a fifth column positioning pin 12.3, and the fifth column positioning pin 12.3 aligns with a column mounting hole at a welding position of the column 13.2 and the beam 13.1.

The first drive means 2.2, the third drive means 4.2, the fifth drive means 6.2, the tenth drive means 10.8 and the twelfth drive means 11.11 are three-axis cylinders.

Second drive arrangement 3.2, fourth drive arrangement 5.2, sixth drive arrangement 7.2, seventh drive arrangement 8.2, eighth drive arrangement 9.2, eleventh drive arrangement 11.2 adopts the unipolar cylinder, the vertical installation of this unipolar cylinder, the upper end of unipolar cylinder is connected and is pressed from both sides tight piece, press from both sides tight piece horizontal clamp or open removable tight arm of clamp, it is removable corresponding layering to press from both sides tight arm connection, these several drive arrangement compress tightly and open for conventional lever principle control layering, for the conventional structure in this field, the utility model discloses in no longer introduce its internal structure connection in detail.

Example 2:

as shown in fig. 21, on the basis of embodiment 1, the automobile B-pillar clamp assembly further includes a reference positioning unit 14, a traveling device 15 is disposed below the base plate 1, the traveling device 15 includes a supporting frame, universal wheels are disposed at four corners of the supporting frame, the reference positioning unit 14 includes a positioning frame detachably connected to the ground, supporting sheets 14.2 are disposed at four corners of the positioning frame 14.1 for supporting the positioning frame 14.1, bolt connection devices 14.3 are further disposed at four corners of the positioning frame 14.1, detachment and connection with the ground are achieved through the bolt connection devices 14.3, an opening for facilitating entry and exit of the traveling device 15 is formed in one side of the positioning frame 14.1, positioning pin mounting seats viii 14.4 are symmetrically disposed on left and right sides of the opening, the positioning pin mounting seats viii 14.4 are fixed on the positioning frame 14.1, two traveling device positioning pins 14.6 are disposed on each positioning pin mounting seat viii 14.4, the traveling device positioning pins 14.6 are disposed on vertical telescopic rods of a thirteenth driving device 14.5, the thirteenth driving device 14.5 is fixed on the positioning frame 14.1, a walking device limiting block 14.7 used for stopping the walking device positioning pin 14.6 is arranged right above the walking device positioning pin 14.6, and the walking device limiting block 14.7 is connected with the positioning pin mounting seat VIII 14.5; the edge of the supporting frame is fixedly connected with a walking device positioning block 16 with a positioning hole, the walking device positioning block 16 corresponds to the walking device positioning pin 14.6 in position one by one and is positioned between the corresponding walking device positioning pin 14.6 and a walking device limiting block 14.7, the walking device positioning pin 14.6 is big in top and small in bottom, the smaller part is consistent with the radius of the positioning hole, when the walking device positioning pin 14.6 rises, the larger part can jack up the walking device positioning block 16 together, and therefore the whole automobile B-pillar clamp is driven to rise to be positioned. The thirteenth drive means 14.5 is driven by a single-shaft cylinder.

Fig. 18 and 19 show a conventional B-pillar of an automobile, which includes a T-shaped structure formed by welding a pillar 13.2 and a beam 13.1, wherein the pillar 13.2 and the beam 13.1 are provided with a plurality of mounting holes, the beam 13.1 is welded with a first protrusion, a B-pillar positioning block and a second protrusion, the shorter section of the right side of the beam 13.1 is provided with two first protrusions, the longer section of the left side of the beam 13.1 is provided with two second protrusions, and the B-pillar positioning block is arranged between the first protrusion and the second protrusion.

The utility model discloses in, stand centre gripping unit is the conventional centre gripping unit in this field, the utility model discloses interval between every module, size all carry out slight adjustment according to the mounting hole position of car B post and the shape size of car B post.

The utility model discloses in, first shrink stop device, second shrink stop device 6.4, first extension stop device 4.4, second extension stop device 10.9 and third extend stop device 11.9's effect lie in both can successfully fix a position the extension of actuating lever or the position of shrink, still can avoid the actuating lever to lead to the cylinder to damage easily because of walking whole stroke.

The utility model discloses a theory of operation does:

as shown in fig. 20, the driving rods of the second driving device 3.2, the fourth driving device 5.2, the sixth driving device 7.2, the seventh driving device 8.2, the eighth driving device 9.2, the eleventh driving device 11.2 and the eleventh driving device 11.2 before the workpiece is placed are in a contracted state, and the corresponding pressing strips are opened; the driving rods of the first driving device 2.2 and the fifth driving device 6.2 are in an extension state, the driving rod of the third driving device 4.2 is in a contraction state, the column mounting holes are sequentially inserted into the corresponding column positioning pins for positioning, the first boss is inserted into the first boss positioning pin 2.7, the B column positioning block is inserted into the B column positioning block positioning pin 4.8, the second boss is inserted into the second boss positioning pin, the beam mounting holes are inserted into the corresponding beam positioning pins, and the workpiece positioning is completed; the first driving device 2.2, the third driving device 4.2 and the fifth driving device 6.2 are started, the first boss, the B column positioning block and the second boss are pushed to a specified welding position, then the second driving device 3.2, the fourth driving device 5.2, the sixth driving device 7.2, the seventh driving device 8.2, the eighth driving device 9.2, the eleventh driving device 11.2 and the eleventh driving device 11.2 are started, the pressing block on the upright column is pressed on the pressing block under the upright column, the pressing block on the cross beam is pressed on the pressing block under the cross beam, the pressing block on the cross beam mounting hole is pressed on the corresponding positioning pin, the clamping block before flanging and after flanging clamp blocks clamp the cross beam front and back, so that the upright column 13.2 and the cross beam 13.1 are stabilized from three degrees of freedom, and then welding processing is carried out.

As shown in fig. 22, when numerical control welding is to be performed, the substrate 1 with the clamp is fixedly mounted on the traveling device 14.6, the positioning frame 14.1 is grounded through the bolt connecting device 14.3 to perform reference point positioning, then positioning mounting of the automobile B-pillar clamp assembly is performed, the traveling device 14.6 is pushed to enter the positioning frame 14.1 from the opening, the traveling device positioning block 16 is aligned between the traveling device positioning pin 14.6 and the traveling device limiting block 14.7, the thirteenth driving device 14.5 is started, the traveling device positioning pin 14.6 extends into the positioning hole of the traveling device positioning block 16 to jack up the traveling device positioning block 16, height limiting is performed through the traveling device limiting block, and thus the automobile B-pillar clamp is fixed to a position suitable for numerical control machining, and more accurate positioning is achieved; after processing, running gear 15 can be transferred to the shrink of running gear locating pin 14.6, releases in the opening, and the next set of anchor clamps of taking running gear 15 push and continue to weld, has realized the fast switch-over of anchor clamps.

Of course, the utility model discloses a benchmark positioning unit 14 still can be applied to on the anchor clamps of other types (like car A post, car D post), as long as set up the locating piece of taking the locating hole on base plate or the running gear of base plate below, adopt the locating pin to match the location that the stopper realized anchor clamps to the business turn over of taking open-ended positioning frame to be convenient for anchor clamps has been designed, all belongs to the utility model discloses a design.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "head", "tail", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the invention. It is also to be understood that, unless expressly stated or limited otherwise, the terms "connected" and "coupled" are intended to be open-ended, i.e., may be fixedly connected; can be a detachable connection; or may be a point connection; may be a direct connection; may be indirectly connected through an intermediate medium, and may communicate between the two components, and those skilled in the art will understand the specific meaning of the above terms in the present invention in specific situations. The equipment connection mode not described in detail in the utility model is understood according to the conventional connection mode in the field.

The above embodiments are only specific examples for further detailed description of the objects, technical solutions and advantages of the present invention, and the present invention is not limited thereto. Any modification, equivalent replacement, improvement and the like made within the scope of the present disclosure are all included within the protection scope of the present disclosure.

Claims (10)

1. The utility model provides a car B post anchor clamps assembly, includes the base plate, be equipped with stand clamping component and beam clamping component on the base plate, stand clamping component includes a plurality of stand centre gripping units, its characterized in that: the beam clamping assembly is formed by sequentially arranging a first lug boss positioning unit, a first beam clamping unit, a B column positioning block positioning unit, a second beam clamping unit, a second lug boss positioning unit and a third beam clamping unit from right to left along the direction of the rear edge of the beam; the first boss positioning unit comprises a first main mounting frame arranged on the base plate, a first driving device is arranged on the first main mounting frame, a driving rod of the first driving device extends and retracts towards the lower oblique direction, a first moving plate is fixedly connected to the driving rod, a first contraction limiting device is arranged in the return stroke of the first moving plate, and the first contraction limiting device is connected with the first main mounting frame; the left end and the right end of the first movable plate are respectively provided with a group of first bulge fixing devices, the structures of the first bulge fixing devices are consistent and in mirror symmetry, each group of first bulge fixing devices comprises a first oblique support, the first oblique support is connected with the first movable plate, a first bulge fixing groove is formed in the first oblique support, a first bulge positioning pin inserted into the first bulge mounting hole is arranged in the first bulge fixing groove, and a first protection plate is arranged beside the first bulge fixing groove; a first cross beam lower pressing block is arranged between the two groups of first lug boss fixing devices and fixedly connected with the first moving plate; a first flanging front clamping block for clamping the flanging of the cross beam is arranged behind the first cross beam lower pressing block and is connected with the first main mounting frame;

the first cross beam clamping unit comprises a transverse pressing strip and a second driving device for driving the transverse pressing strip to be pressed and opened up and down, the second driving device is arranged on a second main mounting frame, and the second main mounting frame is arranged on the substrate; one end of the transverse pressing bar extends into the first boss positioning unit and is provided with a first cross beam upper pressing block matched with the first cross beam lower pressing block, and a first flanging rear clamping block matched with the first flanging front clamping block is further arranged behind the transverse pressing bar at the end; a first cross beam positioning pin inserted into the cross beam mounting hole is arranged right below the pressing block on the first cross beam mounting hole, the first cross beam positioning pin is arranged on a positioning pin mounting seat I, and the positioning pin mounting seat I is fixedly connected with a second main mounting frame;

the B column positioning block positioning unit comprises a third main mounting frame arranged on the base plate, a third driving device is arranged on the third main mounting frame, a driving rod of the third driving device horizontally stretches, the front end of the driving rod is fixedly connected with a second movable plate, a first extension limiting device is arranged in the advancing stroke of the second movable plate, and the first extension limiting device is connected with the third main mounting frame; the clamping block behind two B post locating pieces is symmetrically arranged on the second movable plate, a B post locating piece locating pin inserted into a B post locating piece mounting hole is arranged on the B post locating piece rear clamping block, a B post locating piece front clamping block is arranged in front of the B post locating piece rear clamping block, the B post locating piece front clamping block is arranged on a clamping block support, and the clamping block support is connected with a third main mounting frame.

2. The automotive B-pillar clamp assembly of claim 1, wherein: the automobile B-column clamp assembly further comprises a reference positioning unit, wherein a traveling device is arranged below the base plate, the reference positioning unit comprises a positioning frame detachably connected with the ground, one side of the positioning frame is provided with an opening facilitating the entering and exiting of the traveling device, positioning pin mounting seats VIII are symmetrically arranged on the left side and the right side of the opening, the positioning pin mounting seats VIII are fixed on the positioning frame, each positioning pin mounting seat VIII is at least provided with two traveling device positioning pins, the traveling device positioning pins are arranged on vertical telescopic rods of a thirteenth driving device, the thirteenth driving device is fixed on the positioning frame, traveling device limiting blocks used for stopping the traveling device positioning pins are arranged right above the traveling device positioning pins, and the traveling device limiting blocks are connected with the positioning pin mounting seats VIII; the edge of the walking device is fixedly connected with a walking device positioning block with a positioning hole, the walking device positioning block corresponds to the walking device positioning pin in position one to one and is positioned between the corresponding walking device positioning pin and the walking device limiting block, the walking device positioning pin is small in size and large in size, and the small part is consistent with the radius of the positioning hole.

3. The automotive B-pillar clamp assembly of claim 1, wherein: the second cross beam clamping unit comprises a second cross beam upper pressing block and a fourth driving device for driving the second cross beam upper pressing block to be pressed and opened up and down, the fourth driving device is arranged on a fourth main mounting frame, and the fourth main mounting frame is arranged on the substrate; and a second cross beam lower pressing block matched with the second cross beam upper pressing block is arranged below the second cross beam upper pressing block, a second flanging clamping block is arranged behind the second cross beam lower pressing block, the second cross beam lower pressing block and the second flanging clamping block are arranged on a first pressing block support, and the first pressing block support is fixed on a fourth main mounting frame.

4. The automotive B-pillar clamp assembly of claim 3, wherein: the second beam upper pressing block comprises an L-shaped upper pressing block for pressing the front edge of the beam and an F-shaped upper pressing block for pressing the rear edge of the beam, the fourth driving device is connected with the F-shaped upper pressing block, and the L-shaped upper pressing block is arranged at the front end of the F-shaped upper pressing block; the second cross beam lower pressing block comprises two L-shaped lower pressing blocks corresponding to the L-shaped upper pressing block and the F-shaped upper pressing block; the second flanging clamping block comprises a second flanging front clamping block and a second flanging rear clamping block, the second flanging front clamping block is connected with the L-shaped lower pressing block corresponding to the F-shaped upper pressing block, and the second flanging rear clamping block is connected with the F-shaped upper pressing block.

5. The automotive B-pillar clamp assembly of claim 1, wherein: the second boss positioning unit comprises a fifth main mounting frame arranged on the base plate, a fifth driving device is arranged on the fifth main mounting frame, a driving rod of the fifth driving device extends and retracts towards the lower oblique direction, a third moving plate is fixedly connected to the driving rod, a second contraction limiting device is arranged in the contraction stroke of the third moving plate, and the second contraction limiting device is connected with the fifth main mounting frame; a group of second boss fixing devices are respectively arranged at the left end and the right end of the third moving plate, the structures of the second boss fixing devices are consistent and mirror-symmetrical, each group of second boss fixing devices comprises a second oblique support, the second oblique support is connected with the third moving plate, a second boss fixing groove is formed in the second oblique support, a B column positioning block positioning pin inserted into a second boss mounting hole is arranged in the second boss fixing groove, and a second protection plate is arranged beside the second boss fixing groove; the second beam positioning pin inserted into the corresponding beam mounting hole is arranged between the two sets of second boss fixing devices, the second beam positioning pin is mounted on the positioning pin mounting seat II, the positioning pin mounting seat II is connected with the fifth main mounting frame, the second oblique support is the same as the first oblique support in structure, and the second contraction limiting device is the same as the first contraction limiting device in structure.

6. The automotive B-pillar clamp assembly of claim 1, wherein: the third beam clamping unit comprises an L-shaped pressing strip matched with the corner shape of the tail end of the beam and a sixth driving device for driving the L-shaped pressing strip to be pressed and opened up and down, the sixth driving device is arranged on a sixth main mounting frame, and the sixth main mounting frame is arranged on the base plate; and two ends of the L-shaped pressing strip are respectively provided with a third cross beam upper pressing block, a third cross beam lower pressing block matched with the third cross beam upper pressing block is arranged below the third cross beam upper pressing block, the third cross beam lower pressing block is arranged on a second pressing block support, and the second pressing block support is connected with a sixth main mounting frame.

7. The automotive B-pillar clamp assembly of claim 1, wherein: the first oblique support comprises two L-shaped modules, the transverse edge of one L-shaped module is connected with the first moving plate, the outer side of the vertical edge is connected with the vertical edge of the other L-shaped module, and a first protruding part fixing groove is formed in the transverse edge of the other L-shaped module.

8. The automotive B-pillar clamp assembly of claim 1, wherein: the first contraction limiting device comprises a first contraction limiting block and a first connecting block, the first contraction limiting block is connected with the first main mounting frame through the first connecting block, the first contraction limiting block is arranged in the return stroke of the first moving plate, after the driving rod of the first driving device contracts, the first contraction limiting block abuts against the inner surface of the first moving plate, and the first protruding portion reaches the welding position; the reciprocating stroke of the first moving plate is smaller than that of the driving rod of the first driving device.

9. The automotive B-pillar clamp assembly of claim 1, wherein: the first extension limiting device comprises a first extension limiting block and a second connecting block, the first extension limiting block is connected with the third main mounting frame through the second connecting block, the first extension limiting block is arranged in the extension stroke of the second moving plate, when the driving rod of the third driving device extends, the first extension limiting block abuts against the outer surface of the second moving plate, and the rear clamping block of the B column positioning block is clamped with the front clamping block of the B column positioning block; the reciprocating stroke of the second moving plate is smaller than that of the driving rod of the third driving device.

10. The automotive B-pillar clamp assembly of any one of claims 1-9, wherein: the first driving device, the second driving device, the third driving device, the fourth driving device, the fifth driving device, the sixth driving device and the thirteenth driving device are driven by air cylinders.

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