CN113732595B - Welding fixture for rear sub-frame and rear frame combination in automobile - Google Patents

Welding fixture for rear sub-frame and rear frame combination in automobile Download PDF

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Publication number
CN113732595B
CN113732595B CN202110979690.XA CN202110979690A CN113732595B CN 113732595 B CN113732595 B CN 113732595B CN 202110979690 A CN202110979690 A CN 202110979690A CN 113732595 B CN113732595 B CN 113732595B
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CN
China
Prior art keywords
clamping
frame
plate
supporting
cylinder
Prior art date
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CN202110979690.XA
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Chinese (zh)
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CN113732595A (en
Inventor
高保平
张茂林
康峰
吴振振
张军
李靖
唐成
宋战
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Daao Wuhu Automobile Products Co ltd
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Daao Wuhu Automobile Products Co ltd
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Application filed by Daao Wuhu Automobile Products Co ltd filed Critical Daao Wuhu Automobile Products Co ltd
Priority to CN202110979690.XA priority Critical patent/CN113732595B/en
Publication of CN113732595A publication Critical patent/CN113732595A/en
Application granted granted Critical
Publication of CN113732595B publication Critical patent/CN113732595B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0426Fixtures for other work
    • B23K37/0435Clamps
    • B23K37/0443Jigs
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/40Engine management systems

Abstract

The invention discloses a welding fixture for a rear frame assembly of a rear auxiliary frame in an automobile, which relates to the technical field of automobile products and comprises a supporting mechanism, a fixed clamping mechanism, a fixed pressure mechanism and a pressure clamping mechanism, wherein the supporting mechanism is arranged downwards and is used for supporting other mechanisms; the clamping fixing mechanism is provided with a pair of clamping devices which are symmetrically distributed on the left side and the right side of the first supporting plate, and is used for positioning and clamping the left side and the right side of the front part of the rear frame of the rear auxiliary frame; the fixed pressure mechanism is provided with a pair of support plates II which are correspondingly distributed on two sides, and is used for positioning and compacting the left side and the right side of the rear frame of the rear auxiliary frame; the pressing and clamping mechanism is provided with one and is arranged on the third supporting plate in the middle, and the pressing and clamping mechanism is used for pressing and clamping the middle of the rear edge of the rear frame of the rear auxiliary frame. In conclusion, the welding fixture has the characteristics of ingenious design, reasonable structure and convenience in use.

Description

Welding fixture for rear sub-frame and rear frame combination in automobile
Technical Field
The invention relates to the technical field of automobile products, in particular to a welding fixture for a rear frame assembly of a rear auxiliary frame in an automobile.
Background
The existing rear auxiliary frame is usually of a frame opening structure, and clamping is needed to be carried out through a welding fixture during welding. The existing welding fixture is complex in structure and inconvenient to operate, different welding fixtures are needed for fixing different rear auxiliary frame assemblies, development cost is high, working efficiency is low, and therefore it becomes important to solve the problem.
Disclosure of Invention
The invention aims to provide a welding fixture for a rear frame assembly of a rear auxiliary frame in an automobile, which is used for solving the defects caused by the prior art.
A welding jig that is arranged in back sub vehicle frame back frame to close body, includes supporting mechanism, decides clamp mechanism, decides press mechanism and presses clamp mechanism, wherein:
the supporting mechanism is arranged below and used for supporting other mechanisms, the supporting mechanism comprises a supporting frame, a first supporting plate, a second supporting plate and a third supporting plate, the supporting frame is horizontally arranged, the first supporting plate is provided with one supporting plate and is arranged on the front edge of the supporting frame in a centering manner, the second supporting plate is provided with a pair of supporting plates and is symmetrically arranged on the left side and the right side of the supporting frame, and the third supporting plate is provided with one supporting plate and is arranged on the rear edge of the supporting frame in a centering manner;
the clamping fixing mechanism is provided with a pair of clamping devices which are symmetrically distributed on the left side and the right side of the first supporting plate, and is used for positioning and clamping the left side and the right side of the front part of the rear frame of the rear auxiliary frame;
the fixed pressure mechanism is provided with a pair of support plates II which are correspondingly distributed on two sides, and is used for positioning and compacting the left side and the right side of the rear frame of the rear auxiliary frame;
the pressing and clamping mechanism is provided with one pressing and clamping mechanism and is arranged on the third supporting plate in the middle, and the pressing and clamping mechanism is used for pressing and clamping the middle of the rear edge of the rear frame of the rear auxiliary frame.
Preferably, the fixing and clamping mechanism comprises a first supporting seat, a first clamping cylinder, a first thin cylinder, a first positioning seat and a first positioning column, wherein the first supporting seat is of an L-shaped structure and is arranged on the upper side of the first supporting plate, the first clamping cylinder is vertically upwards arranged on the first supporting seat, a first clamping arm is connected to an output shaft of the first clamping cylinder, a first clamping strip is connected to an overhanging end of the first clamping arm, a clamping block is connected to an overhanging end of the first clamping strip, a first fixing plate is arranged below the first supporting plate under the first clamping strip, the first thin cylinder is vertically upwards arranged on the lower side of the first fixing plate, the first positioning seat is horizontally arranged on the upper side of the first fixing plate, the first positioning column is coaxially arranged at the tail end of a piston rod of the first thin cylinder, and the first positioning column penetrates through the first positioning seat and is in sliding fit with the first positioning seat.
Preferably, the constant pressure mechanism comprises a supporting seat II, a clamping cylinder II, a thin type cylinder II, a positioning seat II and a positioning column II, wherein the supporting seat II is of an L-shaped structure and is arranged on the upper side of a supporting plate II, the clamping cylinder II is vertically upwards arranged on the supporting seat II, a clamping arm II is connected to an output shaft of the clamping cylinder II, a compression strip is connected to an overhanging end of the clamping arm II, a supporting block is arranged below the compression strip on the supporting plate II, a fixing plate II is horizontally arranged at the top of the supporting block, the thin type cylinder II is vertically upwards arranged on the lower side of the fixing plate II, the positioning seat II is horizontally arranged on the upper side of the fixing plate II, the positioning column II is coaxially arranged at the tail end of a piston rod of the thin type cylinder II, and penetrates through the positioning seat II and is in sliding fit with the positioning seat II.
Preferably, the press-clamping mechanism comprises an advancing component, a downward moving component and a press-clamping component, wherein:
the forward moving part comprises a first slide rail, a first slide plate, a first fixing strip and a first telescopic cylinder, wherein the first slide rail is provided with a pair of slide blocks which are symmetrically arranged on the upper side of a third support plate in a left-right mode, the first slide rail is provided with the first slide blocks in a sliding mode, the first slide plates are horizontally arranged on the first slide blocks on two sides, the first telescopic cylinder is vertically upwards arranged on the lower side of the third support plate through the first fixing strip, the tail end of a piston rod of the first telescopic cylinder is connected with a first hinge seat, the lower side of the first slide plate is provided with a second hinge seat, and the first hinge seat is connected with the second hinge seat through the first hinge strip;
the sliding component comprises a first mounting plate, a second sliding rail, a second sliding plate, a second fixing strip and a second telescopic cylinder, wherein the first mounting plate is vertically arranged on the upper side of the first sliding plate through a pair of reinforcing plates, the second sliding rail is provided with a pair of sliding blocks which are symmetrically arranged on the front side of the first mounting plate, the second sliding rail is provided with a second sliding block in a sliding manner, the second sliding plate is vertically arranged on the second sliding blocks on the two sides, the second telescopic cylinder is obliquely and frontward arranged on the rear side of the first mounting plate through a second fixing strip, the tail end of a piston rod of the second telescopic cylinder is connected with a third hinging seat, the rear side of the second sliding plate is provided with a fourth hinging seat, and the third hinging seat is connected with the fourth hinging seat through the second hinging strip;
the clamping component comprises a mounting plate II and a clamping cylinder III, wherein the mounting plate II is of an H-shaped structure and is horizontally arranged on the front side of the sliding plate II through a pair of reinforcing sheets, the clamping cylinder III is provided with a pair of clamping arms III and is vertically arranged on the left side and the right side of the mounting plate II downwards, the movable parts of the clamping cylinder III are connected with the clamping arms III in a front-back symmetrical mode, the lower end parts of the clamping arms III are connected with L-shaped extension strips, the lower end parts of the extension strips are connected with extension blocks, the inner sides of the extension blocks are connected with clamping blocks, the lower side of the clamping cylinder III is centrally connected with a T-shaped lower pressing strip, and the lower end parts of the lower pressing strips are symmetrically arranged with lower pressing blocks.
Compared with the prior art, the welding fixture for the rear frame assembly of the rear auxiliary frame in the automobile has the following advantages:
(1) the left and right sides of the front edge of the rear frame of the rear auxiliary frame are supported through the first positioning seats which are distributed in a bilateral symmetry mode, the left and right sides of the front edge of the rear frame of the rear auxiliary frame are positioned through the first positioning columns which are distributed in a bilateral symmetry mode, the first positioning columns can be driven to stretch out and draw back through the first thin type air cylinders, and the clamping bars and the clamping blocks can be driven to downwards wind after being driven through the first clamping arms of the clamping air cylinders, so that the left and right sides of the front edge of the rear frame of the rear auxiliary frame are clamped.
(2) The left and right sides of the rear side of the rear frame of the rear auxiliary frame are supported through the positioning seats II which are distributed in a bilateral symmetry mode, the left and right sides of the rear side of the rear frame of the rear auxiliary frame are positioned through the positioning columns II which are distributed in a bilateral symmetry mode, the positioning columns II can be driven to stretch out and draw back through the thin type air cylinder II, the compression bar can be driven to downwards rotate after being driven through the clamping arms II through the clamping air cylinder II, and accordingly the left and right sides of the front side of the rear frame of the rear auxiliary frame are pressed downwards.
(3) After the piston rod of the first telescopic cylinder is stretched and transmitted by the first hinge strip, the first slide plate can be driven to move forwards along the first slide rail so as to drive the clamping component to move forwards and approach to the rear frame of the rear auxiliary frame; after the piston rod of the telescopic cylinder II is contracted and is transmitted by the hinge strip II, the slide plate II can be driven to move downwards along the slide rail so as to drive the pressing and clamping component to move downwards and be close to the rear frame of the rear frame; the clamping blocks at the front side and the rear side can be driven to be close to the middle pressing block after being driven by the clamping cylinder III through the clamping arm III, so that the rear side of the rear frame is clamped.
Drawings
FIG. 1 is a schematic view of the overall three-dimensional structure of the present invention.
Fig. 2 is a schematic diagram of the overall top view of the present invention.
Fig. 3 is a schematic structural view of a supporting mechanism in the present invention.
Fig. 4 is a schematic structural view of the fixing clip mechanism in the present invention.
Fig. 5 is a schematic structural diagram of a constant pressure mechanism in the present invention.
Fig. 6 to 8 are schematic structural views of a clamping mechanism according to the present invention.
Fig. 9 is a schematic structural view of a rear subframe rear frame in the present invention.
Wherein:
10-a supporting mechanism; 101-a support frame; 102-a first support plate; 103-a second supporting plate; 104-a third support plate;
20-a clamping mechanism; 201-a first supporting seat; 202-clamping a first cylinder; 203-clamping arm one; 204-clamping bars; 205—clamping blocks; 206-fixing plate one; 207-thin cylinder one; 208-positioning seat I; 209-positioning column one;
30-a constant pressure mechanism; 301-a second supporting seat; 302, clamping a second cylinder; 303-clamping arm two; 304-compacting the strips; 305-supporting blocks; 306-fixing plate II; 307-thin cylinder two; 308-positioning seat II; 309-positioning column two;
40-a clamping mechanism; 401-slide rail one; 402-first slider; 403-first slide plate; 404-fixing strip one; 405-telescoping cylinder one; 406-hinge seat one; 407-hinging seat II; 408-hinge strip one; 409-stiffener; 410-mounting plate one; 411-second slide rail; 412-second slider; 413—skateboard two; 414-fixing strip two; 415-a telescopic cylinder II; 416-hinge seat three; 417-hinge seat IV; 418-hinge strip two; 419-reinforcing sheet; 420-mounting plate II; 421—clamping cylinder three; 422-clamp arm three; 423-extension strips; 424-extension blocks; 425-clamping blocks; 426-lower batten; 427-pressing down;
50-rear subframe rear frame.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1 to 9, a welding fixture for a rear sub-frame rear frame assembly in an automobile includes a support mechanism 10, a fixing and clamping mechanism 20, a fixing and clamping mechanism 30 and a clamping and clamping mechanism 40, wherein:
the supporting mechanism 10 is arranged below and is used for supporting other mechanisms, the supporting mechanism 10 comprises a supporting frame 101, a first supporting plate 102, a second supporting plate 103 and a third supporting plate 104, the supporting frame 101 is horizontally arranged, the first supporting plate 102 is provided with one and is arranged on the front side of the supporting frame 101 in a centering manner, the second supporting plate 103 is provided with a pair and is symmetrically arranged on the left side and the right side of the supporting frame 101, and the third supporting plate 104 is provided with one and is arranged on the rear side of the supporting frame 101 in a centering manner;
the clamping mechanism 20 is provided with a pair of clamping mechanisms which are symmetrically distributed on the left and right sides of the first support plate 102, and the clamping mechanism 20 is used for positioning and clamping the left and right sides of the front part of the rear subframe rear frame 50;
the constant pressure mechanism 30 is provided with a pair of support plates two 103 which are correspondingly distributed on two sides, and the constant pressure mechanism 30 is used for positioning and compacting the left side and the right side of the rear subframe rear frame 50;
the pressing and clamping mechanism 40 is provided with one and is arranged on the third support plate 104 in the middle, and the pressing and clamping mechanism 40 is used for pressing and clamping the middle of the rear edge of the rear subframe rear frame 50.
In this embodiment, the fixing and clamping mechanism 20 includes a first support seat 201, a first clamping cylinder 202, a first thin cylinder 207, a first positioning seat 208 and a first positioning column 209, wherein the first support seat 201 is of an L-shaped structure and is mounted on the upper side of the first support plate 102, the first clamping cylinder 202 is vertically mounted on the first support seat 201 upwards, a first clamping arm 203 is connected to an output shaft of the first clamping cylinder 202, a clamping strip 204 is connected to an overhanging end of the first clamping arm 203, a clamping block 205 is connected to an overhanging end of the clamping strip 204, a first fixing plate 206 is mounted below the clamping strip 204 on the first support plate 102, the first thin cylinder 207 is vertically mounted on the lower side of the first fixing plate 206 upwards, the first positioning seat 208 is horizontally mounted on the upper side of the first fixing plate 206, the first positioning column 209 is coaxially mounted on a tail end of a piston rod of the first thin cylinder 207, and the first positioning column 209 penetrates the first positioning seat 208 and is in sliding fit with the first positioning seat 208. The left and right sides of the front edge of the rear subframe rear frame 50 are supported through the positioning seats I208 which are distributed in a bilateral symmetry manner, the left and right sides of the front edge of the rear subframe rear frame 50 are positioned through the positioning columns I209 which are distributed in a bilateral symmetry manner, the expansion and contraction of the positioning columns I209 can be driven through the thin type air cylinder I207, and the clamping strips 204 and the clamping blocks 205 can be driven to rotate downwards after the clamping air cylinder I202 is driven through the clamping arms I203 so as to clamp the left and right sides of the front edge of the rear subframe rear frame 50.
In this embodiment, the constant pressure mechanism 30 includes a second support base 301, a second clamping cylinder 302, a second thin cylinder 307, a second positioning base 308, and a second positioning column 309, where the second support base 301 is of an L-shaped structure and is mounted on the upper side of the second support base 103, the second clamping cylinder 302 is mounted on the second support base 301 vertically upwards, a second clamping arm 303 is connected to an output shaft of the second clamping cylinder 302, an overhanging end of the second clamping arm 303 is connected to a pressing strip 304, a supporting block 305 is mounted below the pressing strip 304 on the second support base 103, a second fixing plate 306 is horizontally mounted on top of the supporting block 305, the second thin cylinder 307 is mounted vertically upwards on the lower side of the second fixing plate 306, the second positioning base 308 is horizontally mounted on the upper side of the second fixing plate 306, the second positioning column 309 is coaxially mounted on the end of a piston rod of the second thin cylinder 307, and the second positioning column 309 penetrates the second positioning base 308 and is in sliding fit with the second positioning base 308. The left and right sides of the rear side of the rear subframe rear frame 50 are supported through the positioning seats II 308 which are distributed in a bilateral symmetry manner, the left and right sides of the rear side of the rear subframe rear frame 50 are positioned through the positioning columns II 309 which are distributed in a bilateral symmetry manner, the expansion and contraction of the positioning columns II 309 can be driven through the thin type air cylinder II 307, and the compression bar 304 can be driven to downwards wind after the clamping air cylinder II 302 is driven through the clamping arm II 303, so that the left and right sides of the front side of the rear subframe rear frame 50 are pressed downwards.
In this embodiment, the clamping mechanism 40 includes an advancing member, a downward member, and a clamping member, wherein:
the forward moving component comprises a first slide rail 401, a first slide plate 403, a first fixing strip 404 and a first telescopic cylinder 405, wherein the first slide rail 401 is provided with a pair of slide blocks which are symmetrically arranged on the upper side of a third support plate 104 in a left-right mode, the first slide rail 401 is provided with the first slide block 402 in a sliding mode, the first slide plate 403 is horizontally arranged on the first slide blocks 402 on the two sides, the first telescopic cylinder 405 is vertically upwards arranged on the lower side of the third support plate 104 through the first fixing strip 404, the tail end of a piston rod of the first telescopic cylinder 405 is connected with a first hinge seat 406, the lower side of the first slide plate 403 is provided with a second hinge seat 407, and the first hinge seat 406 is connected with the second hinge seat 407 through the first hinge strip 408; after the piston rod of the first telescopic cylinder 405 is stretched and transmitted through the first hinge strip 408, the first slide plate 403 can be driven to move forwards along the first slide rail 401 so as to drive the clamping component to move forwards and approach the rear subframe rear frame 50;
the downward moving component comprises a first mounting plate 410, a second sliding rail 411, a second sliding plate 413, a second fixing strip 414 and a second telescopic cylinder 415, wherein the first mounting plate 410 is vertically arranged on the upper side of the first sliding plate 403 through a pair of reinforcing plates 409, the second sliding rail 411 is provided with a pair of sliding blocks 412 which are symmetrically arranged on the front side of the first mounting plate 410 in a left-right mode, the second sliding rail 411 is provided with the second sliding blocks 412 in a sliding mode, the second sliding plate 413 is vertically arranged on the second sliding blocks 412 on the two sides, the second telescopic cylinder 415 is obliquely and frontward arranged on the rear side of the first mounting plate 410 through the second fixing strip 414, the tail end of a piston rod of the second telescopic cylinder 415 is connected with a third hinging seat 416, the rear side of the second sliding plate 413 is provided with a fourth hinging seat 417, and the third hinging seat 416 is connected with the fourth hinging seat 417 through the second hinging strip 418; after the piston rod of the second telescopic cylinder 415 is contracted and is transmitted through the second hinge rod 418, the second slide plate 413 can be driven to move downwards along the second slide rail 411 so as to drive the clamping component to move downwards and approach the rear frame 50 of the rear frame;
the clamping component comprises a second mounting plate 420 and a third clamping cylinder 421, the second mounting plate 420 is of an H-shaped structure and is horizontally mounted on the front side of the second sliding plate 413 through a pair of reinforcing sheets 419, the third clamping cylinder 421 is provided with a pair of clamping arms 422 which are vertically mounted on the left side and the right side of the second mounting plate 420 downwards, the lower end part of the third clamping cylinder 421 is connected with an L-shaped extension bar 423, the lower end part of the extension bar 423 is connected with an extension block 424, the inner side of the extension block 424 is connected with a clamping block 425, the lower side of the third clamping cylinder 421 is centrally connected with a T-shaped lower pressing bar 426, and the lower end part of the lower pressing bar 426 is symmetrically provided with a lower pressing block 427. The clamping cylinder III 421 can drive the clamping blocks 425 on the front side and the rear side to approach the middle lower pressing block 427 after being driven by the clamping arm III 422 so as to clamp the rear side of the rear frame 50 of the rear frame.
In this embodiment, the welding fixture for the rear sub-frame rear frame assembly in the automobile is as follows:
(1) the left and right sides of the front edge of the rear subframe rear frame 50 are supported through the positioning seats I208 which are distributed in a bilateral symmetry manner, the left and right sides of the front edge of the rear subframe rear frame 50 are positioned through the positioning columns I209 which are distributed in a bilateral symmetry manner, the expansion and contraction of the positioning columns I209 can be driven through the thin type air cylinder I207, and the clamping strips 204 and the clamping blocks 205 can be driven to rotate downwards after the clamping air cylinder I202 is driven through the clamping arms I203 so as to clamp the left and right sides of the front edge of the rear subframe rear frame 50.
(2) The left and right sides of the rear side of the rear subframe rear frame 50 are supported through the positioning seats II 308 which are distributed in a bilateral symmetry manner, the left and right sides of the rear side of the rear subframe rear frame 50 are positioned through the positioning columns II 309 which are distributed in a bilateral symmetry manner, the expansion and contraction of the positioning columns II 309 can be driven through the thin type air cylinder II 307, and the compression bar 304 can be driven to downwards wind after the clamping air cylinder II 302 is driven through the clamping arm II 303, so that the left and right sides of the front side of the rear subframe rear frame 50 are pressed downwards.
(3) After the piston rod of the first telescopic cylinder 405 is stretched and transmitted through the first hinge strip 408, the first slide plate 403 can be driven to move forwards along the first slide rail 401 so as to drive the clamping component to move forwards and approach the rear subframe rear frame 50; after the piston rod of the second telescopic cylinder 415 is contracted and is transmitted through the second hinge rod 418, the second slide plate 413 can be driven to move downwards along the second slide rail 411 so as to drive the clamping component to move downwards and approach the rear frame 50 of the rear frame; the clamping cylinder III 421 can drive the clamping blocks 425 on the front side and the rear side to approach the middle lower pressing block 427 after being driven by the clamping arm III 422 so as to clamp the rear side of the rear frame 50 of the rear frame.
Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the invention or equivalents thereto are intended to be embraced therein.

Claims (1)

1. A welding jig that is arranged in back sub vehicle frame back frame to close body which characterized in that: comprises a supporting mechanism (10), a fixed clamping mechanism (20), a fixed pressing mechanism (30) and a pressing clamping mechanism (40), wherein:
the supporting mechanism (10) is arranged downwards and used for supporting other mechanisms, the supporting mechanism (10) comprises a supporting frame (101), a first supporting plate (102), a second supporting plate (103) and a third supporting plate (104), the supporting frame (101) is horizontally arranged, the first supporting plate (102) is provided with one and is arranged on the front edge of the supporting frame (101) in a centering mode, the second supporting plate (103) is provided with a pair of left and right sides symmetrically arranged on the supporting frame (101), and the third supporting plate (104) is provided with one and is arranged on the rear edge of the supporting frame (101) in a centering mode;
the clamping mechanism (20) is provided with a pair of clamping mechanisms which are symmetrically distributed on the left side and the right side of the first supporting plate (102), the clamping mechanism (20) is used for positioning and clamping the left side and the right side of the front part of the rear frame (50) of the rear auxiliary frame, the clamping mechanism (20) comprises a first supporting seat (201), a first clamping cylinder (202), a first thin cylinder (207), a first positioning seat (208) and a first positioning column (209), the first supporting seat (201) is of an L-shaped structure and is arranged on the upper side of the first supporting plate (102), the first clamping cylinder (202) is vertically upwards arranged on the first supporting seat (201), the output shaft of the first clamping cylinder (202) is connected with a first clamping arm (203), the overhanging end of the first clamping arm (203) is connected with a clamping strip (204), the overhanging end of the clamping strip (204) is connected with a clamping block (205), the first supporting plate (102) is provided with a fixing plate (206) below the clamping strip (204), the first thin cylinder (207) is vertically upwards arranged on the upper side of the fixing plate (206) and is coaxially arranged on the first positioning column (209), the first positioning column (209) penetrates through the first positioning seat (208) and is in sliding fit with the first positioning seat (208);
the fixed pressure mechanism (30) is provided with a pair of support plates II (103) which are correspondingly distributed on two sides, the fixed pressure mechanism (30) is used for realizing positioning and compaction of the left side and the right side of the rear frame (50) of the rear auxiliary frame, the fixed pressure mechanism (30) comprises a support seat II (301), a clamping cylinder II (302), a thin cylinder II (307), a positioning seat II (308) and a positioning column II (309), the support seat II (301) is of an L-shaped structure and is arranged on the upper side of the support plate II (103), the clamping cylinder II (302) is vertically upwards arranged on the support seat II (301), the output shaft of the clamping cylinder II (302) is connected with a clamping arm II (303), the overhanging end of the clamping arm II (303) is connected with a compaction bar (304), the support block (305) is arranged below the compaction bar (304), the top of the support block (305) is horizontally provided with a fixing plate II (306), the vertical cylinder II (307) is vertically arranged on the upper side of the support seat II (307) towards the lower side of the fixing plate II (307), the fixing plate II (306) is coaxially arranged on the positioning column II (309), the second positioning column (309) penetrates through the second positioning seat (308) and is in sliding fit with the second positioning seat (308);
the clamping mechanism (40) is provided with one clamping mechanism and is arranged on the third supporting plate (104) in the middle, the clamping mechanism (40) is used for pressing down and clamping the middle of the rear edge of the rear frame (50) of the rear auxiliary frame, the clamping mechanism (40) comprises a forward moving part, a downward moving part and a clamping pressing part, the forward moving part comprises a first sliding rail (401), a first sliding plate (403), a first fixed strip (404) and a first telescopic cylinder (405), the first sliding rail (401) is provided with a pair of sliding blocks and is arranged on the upper side of the third supporting plate (104) in a bilateral symmetry manner, the first sliding rail (401) is provided with a first sliding block (402) in a sliding manner, the first sliding plate (403) is horizontally arranged on the first sliding blocks (402) on two sides, the first telescopic cylinder (405) is vertically arranged on the lower side of the third supporting plate (104) through the first fixed strip (404), the tail end of a piston rod of the first telescopic cylinder (405) is connected with a first hinging seat (406), the lower side of the first sliding plate (403) is provided with a second hinging seat (407), and the first hinging seat (408) is connected with the second hinging seat (408) through the first hinging seat (408); the sliding component comprises a first mounting plate (410), a second sliding rail (411), a second sliding plate (413), a second fixing strip (414) and a second telescopic cylinder (415), wherein the first mounting plate (410) is vertically mounted on the upper side of the first sliding plate (403) through a pair of reinforcing plates (409), the second sliding rail (411) is provided with a pair of sliding blocks (412) which are symmetrically mounted on the front side of the first mounting plate (410), the second sliding rail (411) is provided with the second sliding blocks (412) in a sliding manner, the second sliding plate (413) is vertically mounted on the second sliding blocks (412) on the two sides, the second telescopic cylinder (415) is obliquely and frontward mounted on the rear side of the first mounting plate (410) through the second fixing strip (414), the tail end of a piston rod of the second telescopic cylinder (415) is connected with a third hinging seat (416), the rear side of the second sliding plate (413) is provided with a fourth hinging seat (417), and the third hinging seat (416) is connected with the fourth hinging seat (417) through the second fixing strip (418). The clamping component comprises a mounting plate II (420) and a clamping cylinder III (421), wherein the mounting plate II (420) is of an H-shaped structure and is horizontally arranged on the front side of a sliding plate II (413) through a pair of reinforcing sheets (419), the clamping cylinder III (421) is provided with a pair of clamping arms III (422) which are vertically and downwards arranged on the left side and the right side of the mounting plate II (420), the lower end part of the clamping arm III (422) is connected with an L-shaped extension strip (423), the lower end part of the extension strip (423) is connected with an extension block (424), the inner side of the extension block (424) is connected with a clamping block (425), the lower side of the clamping cylinder III (421) is centrally connected with a T-shaped lower pressing strip (426), and the lower end part of the lower pressing strip (426) is symmetrically provided with a lower pressing block (427);
the welding fixture for the rear sub-frame and rear frame assembly in the automobile comprises the following using steps:
step 1: the left and right sides of the front edge of the rear subframe rear frame (50) are supported through positioning seats I (208) which are distributed in a bilateral symmetry manner, the left and right sides of the front edge of the rear subframe rear frame (50) are positioned through positioning columns I (209) which are distributed in a bilateral symmetry manner, the positioning columns I (209) can be driven to stretch out and draw back through a thin cylinder I (207), and the clamping strips (204) and the clamping blocks (205) can be driven to rotate downwards after the clamping cylinder I (202) is driven by the clamping arms I (203), so that the left and right sides of the front edge of the rear subframe rear frame (50) are clamped;
step 2: the left and right sides of the rear side of the rear subframe rear frame (50) are supported through the positioning seats II (308) which are distributed in a bilateral symmetry manner, the left and right sides of the rear side of the rear subframe rear frame (50) are positioned through the positioning columns II (309) which are distributed in a bilateral symmetry manner, the stretching of the positioning columns II (309) can be driven through the thin type air cylinder II (307), and the compression bar (304) can be driven to downwards rotate after the clamping air cylinder II (302) is driven through the clamping arm II (303), so that the left and right sides of the front side of the rear subframe rear frame (50) are downwards pressed;
step 3: after the piston rod of the telescopic cylinder I (405) is stretched and transmitted through the hinge strip I (408), the sliding plate I (403) can be driven to move forwards along the sliding rail I (401) so as to drive the clamping component to move forwards and be close to the rear subframe rear frame (50); after the piston rod of the telescopic cylinder II (415) is contracted and is driven by the hinge strip II (418), the slide plate II (413) can be driven to move downwards along the slide rail II (411) so as to drive the clamping component to move downwards and approach to the rear frame (50) of the rear frame; the clamping cylinder III (421) can drive the clamping blocks (425) on the front side and the rear side to be close to the middle pressing block (427) after being driven by the clamping arm III (422) so as to clamp the rear side of the rear frame (50) of the rear frame.
CN202110979690.XA 2021-08-25 2021-08-25 Welding fixture for rear sub-frame and rear frame combination in automobile Active CN113732595B (en)

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CN201913413U (en) * 2010-11-25 2011-08-03 安徽万安汽车零部件有限公司 Auxiliary frame welding fixture
CN207873432U (en) * 2018-01-23 2018-09-18 深圳华阳宇光汽车配件有限公司 Reinforcing plate fastening group welding clamp before a kind of fore sub frame lower plate and horizontal swinging arm
CN110744243B (en) * 2019-11-15 2021-11-26 四川建安工业有限责任公司 Auxiliary frame welding assembly fixture
CN211915937U (en) * 2019-12-19 2020-11-13 南京天河汽车零部件股份有限公司芜湖分公司 Car rear bumper assembly multi-station welding fixture
CN211589889U (en) * 2019-12-31 2020-09-29 重庆坤恩机电技术有限公司 Bush press-fitting clamp of automobile auxiliary frame
CN211728081U (en) * 2020-01-15 2020-10-23 安徽成飞集成瑞鹄汽车模具有限公司 Automobile floor beam welding tool

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