CN217913613U

CN217913613U - Automobile battery pack welding assembly fixture

Info

Publication number: CN217913613U
Application number: CN202221051749.5U
Authority: CN
Inventors: 周树文
Original assignee: Yancheng Shiyuan Auto Parts Co ltd
Current assignee: Jiangsu Shiyuan Automotive Parts Co ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-11-29
Anticipated expiration: 2032-05-05

Abstract

The utility model relates to an automobile welding jig technical field just discloses car battery package welding assembly anchor clamps, comprising a base plate, four corners of bottom plate upper end are the same rings of fixedly connected with respectively, be provided with battery package panel board spare between first hold-down mechanism and the second hold-down mechanism. This car battery package welding assembly anchor clamps, the battery package sheet metal component that will carry out the welding is placed on the lower supporting shoe in first hold-down mechanism, insert inside the panel beating spare through two guide arm cylinder control locating pins earlier, fix a position, the inside compact heap of rethread first hold-down mechanism carries out the centre gripping with the avris of panel beating spare and compresses tightly, rethread second hold-down mechanism, the inside linking arm length of second hold-down mechanism can extend to the intermediate position of panel beating spare, compress tightly the position in the middle of the panel beating spare, two hold-down mechanisms mutually support, stability when can improving panel beating spare avris and middle part welding, and the practicality is greatly improved.

Description

Automobile battery pack welding assembly fixture

Technical Field

The utility model relates to an automobile welding jig technical field specifically is automobile battery package welding assembly anchor clamps.

Background

In the assembly welding production process of automobile bodies, in order to ensure product quality, improve labor productivity and reduce labor intensity, tools and devices for clamping and determining the positions of workpieces are often used for assembly and welding, the tools and the devices are collectively called as assembly welding fixtures, the correct geometric shapes and sizes of welded parts, particularly the sizes and shapes of holes of doors, windows and the like of the automobile bodies, can be obtained after the welded parts are welded, and the fixtures must ensure that assembled parts or components can obtain correct positions and reliable clamping when being assembled and can prevent the welded parts from deforming when being welded.

The anchor clamps that current car battery package welding used, it is more single to the structure fixed with the centre gripping of sheet metal component, can't carry out effectual centre gripping to the outside of sheet metal component and fix, great welding error appears at the welded in-process very easily, influences production.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a car battery wraps welding assembly anchor clamps to solve the anchor clamps that present car battery package welding that proposes in the above-mentioned background art used, to the structure fixed with the centre gripping of sheet metal component more single, can't carry out effectual centre gripping to the outside of sheet metal component and fix, great welding error appears in the welded in-process very easily, influences the problem of production.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: automobile battery package welding assembly anchor clamps, including the bottom plate, four corners of bottom plate upper end are the same rings of fixedly connected with respectively, four corners of bottom plate lower extreme are the same first supporting seat of fixedly connected with respectively, the center fixedly connected with second supporting seat of bottom plate lower extreme, the avris of bottom plate upper end is provided with the benchmark apron, the right side fixedly connected with mounting panel of bottom plate, the first hold-down mechanism of upper end fixedly connected with and the second hold-down mechanism of bottom plate, be provided with battery package panel beating spare between first hold-down mechanism and the second hold-down mechanism.

Preferably, the first pressing mechanism comprises a fixing seat, a connecting plate, a first cylinder, a first lug seat, a second lug seat, a first shaft pin, a second shaft pin, a pressing arm, a first pressing block, a double-guide-rod cylinder, a connecting block, a pin seat, a positioning pin, a lower supporting block and a first lug plate, the outer side of the fixing seat is fixedly connected with the connecting plate, the outer side of the connecting plate is provided with the first cylinder, the outer side of the first cylinder is fixedly connected with the first lug seat, the telescopic end of the first cylinder is fixedly connected with the second lug seat, the inner part of the first lug seat is provided with the first shaft pin, the inner part of the second lug seat is provided with the second shaft pin, the upper end of the connecting plate is provided with the pressing arm, the outer side of the pressing arm is fixedly connected with the first lug plate, the lower end of the pressing arm is fixedly connected with the first pressing block, the left side of the connecting plate is fixedly connected with the double-guide-rod cylinder, the upper end of the double-guide-rod cylinder is fixedly connected with the connecting block, the upper end of the connecting block is fixedly connected with the pin seat, the positioning pin is provided with the lower supporting block.

Preferably, rotate through first pivot between the outside of first ear seat and connecting plate and be connected, first pivot passes the outside that the connecting plate extends to first ear seat, first ear seat block is in the outside of connecting plate, second ear seat block is in the outside of pressing the arm, the second pivot passes the outside that second ear seat extends to the arm of pressing, rotate through the second pivot between arm of pressing and the second ear seat and be connected.

Preferably, the pressing arm is designed to be in a T-shaped structure, the first lug plate is rotatably connected with the connecting plate through a rotating shaft, the lower supporting block is in contact with the side of the lower end of the battery wrapping plate, the positioning pin penetrates through the battery wrapping plate and extends to the outer side of the battery wrapping plate, and the first pressing block is in contact with the side of the upper end of the battery wrapping plate.

Preferably, the second hold-down mechanism includes angle seat, template, linking arm, fixed block, first installation piece, second compact heap, second installation piece, third compact heap, second cylinder, third ear seat, third pivot, fourth ear seat, fourth pivot, speed governing joint and second otic placode, the outside fixedly connected with template of angle seat, the upper end of template is provided with the linking arm, the outside fixedly connected with fixed block of linking arm, the first installation piece of lower extreme fixedly connected with of fixed block, the lower extreme fixedly connected with second compact heap of first installation piece, the both ends difference fixedly connected with the same second installation piece in the linking arm outside, the lower extreme fixedly connected with third compact heap of second installation piece, the outside of template is provided with the second cylinder, the outside fixedly connected with third ear seat of second cylinder, the inside of third ear seat is provided with the third pivot, the flexible end fixedly connected with fourth ear seat of second cylinder, the inside of fourth ear seat is provided with the fourth pivot, the other end in the second cylinder outside is provided with the speed governing joint, the lower extreme of second ear plate is connected with the linking arm.

Preferably, rotate through the pivot between second otic placode and the template and be connected, third otic placode block is in the outside of template, the third axis pin passes the outside that the template extends to the third otic placode, rotate through the third pivot between third otic placode and the template and connect, fourth otic placode block is in the rear end of linking arm, the fourth axis pin passes the outside that the linking arm extends to the fourth otic placode, rotate through the fourth pivot between fourth otic placode and the linking arm and connect.

Preferably, the speed governing connects and is provided with two, every the speed governing connects the business turn over gas end of corresponding installation in the second cylinder outside, be L shape structural design between linking arm and the fixed block, first installation piece is F shape structural design, second installation piece and third compact heap are provided with two sets ofly respectively, and are two sets ofly the both sides at the linking arm are installed respectively to second installation piece and third compact heap.

Preferably, the first pressing mechanism and the second pressing mechanism are symmetrically arranged in two groups respectively about a vertical central line of the bottom plate, and the number of the first pressing mechanisms and the number of the second pressing mechanisms in each group are respectively multiple.

Preferably, the lifting ring, the first supporting seat, the second supporting seat and the reference hole cover plate are symmetrically arranged in two groups relative to the horizontal center line of the bottom plate, the number of the first supporting seats in each group is two, and the number of the reference hole cover plates in each group is four.

Preferably, the second pressing block extends to the center of the battery clad plate member and is in contact with the upper end of the battery clad plate member.

Compared with the prior art, the utility model provides an automobile battery package welding assembly anchor clamps possesses following beneficial effect: this car battery package welding assembly anchor clamps, it places on the lower supporting shoe in first hold-down mechanism to carry out welded battery package sheet metal component, earlier insert inside the panel board spare through two guide arm cylinder control locating pins, fix a position, the inside compact heap of rethread first hold-down mechanism carries out the centre gripping with the avris of panel board spare and compresses tightly, later in order to make the structure when panel board spare welds more stable, rethread second hold-down mechanism, the inside linking arm length of second hold-down mechanism can extend to the intermediate position of panel board spare, compress tightly the position in the middle of the panel board spare, two hold-down mechanisms mutually support, stability when can improving panel board spare avris and middle part welding, and the practicability is greatly improved.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;

fig. 3 is an enlarged schematic structural diagram of the point B in fig. 1 according to the present invention.

Wherein: 1. a base plate; 2. a hoisting ring; 3. a first support base; 4. a second support seat; 5. a reference hole cover plate; 6. mounting a plate; 7. a first hold-down mechanism; 8. a second hold-down mechanism; 9. a battery clad plate member; 71. a fixed seat; 72. a connecting plate; 73. a first cylinder; 74. a first ear mount; 75. a second ear mount; 76. a first shaft pin; 77. a second shaft pin; 78. pressing the arm; 79. a first compact block; 710. a double-guide-rod cylinder; 711. connecting blocks; 712. a pin boss; 713. positioning pins; 714. a lower support block; 715. a first ear plate; 81. a corner seat; 82. a template; 83. a connecting arm; 84. a fixed block; 85. a first mounting block; 86. a second compact block; 87. a second mounting block; 88. a third compact block; 89. a second cylinder; 810. a third ear mount; 811. a third shaft pin; 812. a fourth ear mount; 813. a fourth shaft pin; 814. a speed regulation joint; 815. a second ear panel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1: referring to fig. 1-3, an automobile battery pack welding assembly fixture comprises a base plate 1, wherein four corners of the upper end of the base plate 1 are fixedly connected with the same lifting rings 2, four corners of the lower end of the base plate 1 are fixedly connected with the same first supporting seats 3, a center of the lower end of the base plate 1 is fixedly connected with a second supporting seat 4, a reference hole cover plate 5 is arranged on the lateral side of the upper end of the base plate 1, a mounting plate 6 is fixedly connected to the right side of the base plate 1, a first pressing mechanism 7 and a second pressing mechanism 8 are fixedly connected to the upper end of the base plate 1, a battery pack metal plate 9 is arranged between the first pressing mechanism 7 and the second pressing mechanism 8, two groups of the first pressing mechanism 7 and the second pressing mechanism 8 are symmetrically arranged about the vertical central line of the base plate 1, each group of the first pressing mechanism 7 and the second pressing mechanism 8 is provided with a plurality of the lifting rings 2, the first supporting seats 3, the second supporting seats 4 and the reference hole cover plate 5 are symmetrically arranged about the horizontal central line of the base plate 1, two groups of the first supporting seats 3 are provided with two groups, and four reference hole cover plates are arranged at equal intervals;

referring to fig. 1-3, the clamp for the welding assembly of the automobile battery pack further includes a first pressing mechanism 7, the first pressing mechanism 7 includes a fixed seat 71, a connecting plate 72, a first cylinder 73, a first lug seat 74, a second lug seat 75, a first shaft pin 76, a second shaft pin 77, a pressing arm 78, a first pressing block 79, a double-guide-rod cylinder 710, a connecting block 711, a pin seat 712, a positioning pin 713, a lower support block 714 and a first lug plate 715, the outer side of the fixed seat 71 is fixedly connected with the connecting plate 72, the outer side of the connecting plate 72 is provided with the first cylinder 73, the outer side of the first cylinder 73 is fixedly connected with the first lug seat 74, the telescopic end of the first cylinder 73 is fixedly connected with the second lug seat 75, the inner part of the first lug seat 74 is provided with the first shaft pin 76, the inner part of the second lug seat 75 is provided with the second shaft pin 77, the upper end of the connecting plate 72 is provided with the pressing arm 78, the outer side of the pressing arm 78 is fixedly connected with the first lug seat 715, the lower end of the pressing arm 78 is fixedly connected with the first pressing block 79, the left side of the connecting plate 72 is fixedly connected with the double-guide-rod cylinder 710, the connecting block is connected with the lower support block 712, the connecting block 710 is fixedly connected with the lower pin seat 711 of the connecting block 710;

the first lug seat 74 is rotatably connected with the outer side of the connecting plate 72 through a first shaft pin 76, the first shaft pin 76 passes through the connecting plate 72 and extends to the outer side of the first lug seat 74, the first lug seat 74 is clamped on the outer side of the connecting plate 72, the second lug seat 75 is clamped on the outer side of the pressing arm 78, the second shaft pin 77 passes through the second lug seat 75 and extends to the outer side of the pressing arm 78, the pressing arm 78 and the second lug seat 75 are rotatably connected through a second shaft pin 77, the pressing arm 78 is designed in a T-shaped structure, the first lug plate 715 is rotatably connected with the connecting plate 72 through a rotating shaft, the lower support block 714 is contacted with the side of the lower end of the battery pack member 9, the positioning pin 713 passes through the battery pack member 9 and extends to the outer side of the battery pack member 9, and the first pressing block 79 is contacted with the side of the upper end of the battery pack member 9;

specifically, as shown in fig. 1, fig. 2 and fig. 3, in order to improve the positioning accuracy and the stability of the sides of the sheet metal parts during welding, when the sides of the workpiece are positioned and clamped, the workpiece can be placed at the upper end of the lower supporting block 714, then the positioning pin 713 is controlled to lift by the double-guide-rod cylinder 710, the positioning pin 713 is inserted into the positioning hole inside the workpiece to position the workpiece, and meanwhile, the first cylinder 73 lifts upwards to drive the pressing arm 78 to rotate along the connecting plate 72, the first pressing block 79 at the lower end of the pressing arm 78 is pressed to the upper end of the side of the workpiece, the side of the battery-covered sheet metal part 9 can be positioned and pressed first, so that the side structure of the sheet metal part is more stable and reliable during welding, and the positioning is also more accurate.

Example 2: the second pressing mechanism 8 comprises an angle seat 81, a template 82, a connecting arm 83, a fixed block 84, a first mounting block 85, a second pressing block 86, a second mounting block 87, a third pressing block 88, a second cylinder 89, a third lug seat 810, a third shaft pin 811, a fourth lug seat 812, a fourth shaft pin 813, a speed regulation joint 814 and a second lug plate 815, the template 82 is fixedly connected to the outer side of the angle seat 81, the connecting arm 83 is arranged at the upper end of the template 82, the fixed block 84 is fixedly connected to the outer side of the connecting arm 83, the first mounting block 85 is fixedly connected to the lower end of the fixed block 84, the second pressing block 86 is fixedly connected to the lower end of the first mounting block 85, the same second mounting block 87 is fixedly connected to both ends of the outer side of the connecting arm 83, the third pressing block 88 is fixedly connected to the lower end of the second mounting block 87, the second cylinder 89 is arranged at the outer side of the template 82, the third lug seat 810 is fixedly connected to the outer side of the second cylinder 89, the third lug seat 811 is arranged at the inner side of the telescopic end of the second cylinder 89, the fourth lug seat 812 is fixedly connected to the inner side of the fourth cylinder 814, and the connecting arm 815 is connected to the fourth shaft pin 813;

the second lug plate 815 is rotatably connected with the shaping plate 82 through a rotating shaft, the third lug seat 810 is clamped on the outer side of the shaping plate 82, a third shaft pin 811 penetrates through the shaping plate 82 and extends to the outer side of the third lug seat 810, the third lug seat 810 is rotatably connected with the shaping plate 82 through a third shaft pin 811, the fourth lug seat 812 is clamped at the rear end of the connecting arm 83, a fourth shaft pin 813 penetrates through the connecting arm 83 and extends to the outer side of the fourth lug seat 812, the fourth lug seat 812 is rotatably connected with the connecting arm 83 through a fourth shaft pin 813, two speed regulating joints 814 are arranged, each speed regulating joint 814 is correspondingly arranged at the air inlet and outlet end on the outer side of the second air cylinder 89, the connecting arm 83 and the fixing block 84 are in an L-shaped structural design, the first mounting block 85 is in an F-shaped structural design, the second mounting block 87 and the third pressing block 88 are respectively provided with two groups, the two groups of second mounting blocks 87 and the third pressing block 88 are respectively arranged at two sides of the connecting arm 83, and the second pressing block 86 extends to the central position of the battery pack 9 and is in mutual contact with the upper end of the battery pack 9;

specifically, as shown in fig. 1 and 3, in order to improve the stability of the middle position of the plate member during welding, after the battery pack plate member 9 is mounted on the first pressing mechanism 7, the second cylinder 89 is started, the connecting arm 83 is pushed by the telescopic end of the second cylinder 89 to rotate along the shaping plate 82, the second pressing block 86 and the third pressing block 88 on the outer side of the connecting arm 83 are pressed to the upper end of the plate member, meanwhile, the length of the connecting arm 83 can extend the second pressing block 86 to the middle position of the plate member, and the third pressing block 88 can be pressed at a position close to the middle of the plate member, so that the middle position of the plate member can be ensured to be more stable and firm during welding, the plate member is used in cooperation with the first pressing mechanism 7, the welding deformation can be prevented, and the welding precision of the plate member is improved.

The working principle is as follows: firstly, a workpiece is placed at the upper end of a lower supporting block 714, then a double-guide-rod air cylinder 710 is used for controlling a positioning pin 713 to lift, the positioning pin 713 is inserted into a positioning hole in the workpiece, positioning of the workpiece is achieved, meanwhile, a first air cylinder 73 is used for lifting upwards to drive a pressing arm 78 to rotate along a connecting plate 72, a first pressing block 79 at the lower end of the pressing arm 78 is pressed to the upper end of the side of the workpiece, the side of a battery clad plate 9 can be positioned and pressed at first, the side structure of the plate is more stable and reliable during welding, positioning is more accurate, after the battery clad plate 9 is installed on a first pressing mechanism 7, a second air cylinder 89 is started, a connecting arm 83 is pushed to rotate along a shaping plate 82 through a telescopic end of a second air cylinder 89, a second pressing block 86 and a third pressing block 88 on the outer side of the connecting arm 83 are pressed to the upper end of the plate, meanwhile, the length of the second pressing block 86 can extend to the middle position of the connecting arm, the third pressing block 88 can be pressed to the position close to the middle of the connecting arm, when the plate is welded, the middle of the plate, stable and the middle plate can be firmly matched with the first pressing position, and the welding precision can be improved, and the use precision of the welding mechanism can be prevented.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Car battery package welding assembly anchor clamps, including bottom plate (1), its characterized in that: four corners of bottom plate (1) upper end are the same rings (2) of fixedly connected with respectively, four corners of bottom plate (1) lower extreme are the same first supporting seat (3) of fixedly connected with respectively, center fixedly connected with second supporting seat (4) of bottom plate (1) lower extreme, the avris of bottom plate (1) upper end is provided with benchmark apron (5), the right side fixedly connected with mounting panel (6) of bottom plate (1), the first hold-down mechanism (7) of upper end fixedly connected with and second hold-down mechanism (8) of bottom plate (1), be provided with battery package spare (9) between first hold-down mechanism (7) and second hold-down mechanism (8).

2. The automotive battery pack welding assembly fixture of claim 1, wherein: the first pressing mechanism (7) comprises a fixed seat (71), a connecting plate (72), a first air cylinder (73), a first lug seat (74), a second lug seat (75), a first shaft pin (76), a second shaft pin (77), a pressing arm (78), a first pressing block (79), a double-guide-rod air cylinder (710), a connecting block (711), a pin seat (712), a positioning pin (713), a lower supporting block (714) and a first lug plate (715), the outer side of the fixed seat (71) is fixedly connected with the connecting plate (72), the outer side of the connecting plate (72) is provided with the first air cylinder (73), the outer side of the first air cylinder (73) is fixedly connected with the first lug seat (74), the telescopic end of the first air cylinder (73) is fixedly connected with the second lug seat (75), the inner part of the first lug seat (74) is provided with the first shaft pin (76), the inner part of the second lug seat (75) is provided with the second shaft pin (73), the upper end of the connecting plate (72) is provided with the pressing arm (78), the outer side of the pressing arm (78) is fixedly connected with the first lug plate (715), the lower end of the connecting plate (710) is connected with the fixing cylinder (710), the upper end of the connecting block (711) is fixedly connected with a pin seat (712), a positioning pin (713) is arranged inside the pin seat (712), and the front end of the connecting block (711) is fixedly connected with a lower supporting block (714).

3. The automotive battery pack welding assembly fixture of claim 2, wherein: the first lug seat (74) is rotatably connected with the outer side of the connecting plate (72) through a first shaft pin (76), the first shaft pin (76) penetrates through the connecting plate (72) and extends to the outer side of the first lug seat (74), the first lug seat (74) is clamped on the outer side of the connecting plate (72), the second lug seat (75) is clamped on the outer side of the pressing arm (78), the second shaft pin (77) penetrates through the second lug seat (75) and extends to the outer side of the pressing arm (78), and the pressing arm (78) and the second lug seat (75) are rotatably connected through the second shaft pin (77).

4. The automotive battery pack welding assembly fixture of claim 2, wherein: the pressing arm (78) is designed in a T-shaped structure, the first lug plate (715) is rotatably connected with the connecting plate (72) through a rotating shaft, the lower supporting block (714) is in contact with the side of the lower end of the battery pack plate piece (9), the positioning pin (713) penetrates through the battery pack plate piece (9) and extends to the outer side of the battery pack plate piece (9), and the first pressing block (79) is in contact with the side of the upper end of the battery pack plate piece (9).

5. The automotive battery pack welding assembly fixture of claim 1, wherein: the second pressing mechanism (8) comprises an angle seat (81), a template (82), a connecting arm (83), a fixing block (84), a first mounting block (85), a second pressing block (86), a second mounting block (87), a third pressing block (88), a second cylinder (89), a third lug seat (810), a third shaft pin (811), a fourth lug seat (812), a fourth shaft pin (813), a speed regulation joint (814) and a second lug plate (815), the outer side of the angle seat (81) is fixedly connected with the template (82), the upper end of the template (82) is provided with the connecting arm (83), the outer side of the connecting arm (83) is fixedly connected with the fixing block (84), the lower end of the fixing block (84) is fixedly connected with the first mounting block (85), the lower end of the first mounting block (85) is fixedly connected with the second mounting block (86), two ends of the outer side of the connecting arm (83) are respectively fixedly connected with the same second mounting block (87), the lower end of the second mounting block (87) is fixedly connected with the third pressing block (88), the outer side of the third cylinder (82) is provided with the outer side of the third shaft pin (89), and the third shaft pin (89) is arranged on the outer side of the third shaft pin (89), the telescopic end of second cylinder (89) is fixedly connected with fourth ear seat (812), the inside of fourth ear seat (812) is provided with fourth axis pin (813), the other end in second cylinder (89) outside is provided with speed governing and connects (814), the lower extreme fixedly connected with second otic placode (815) of linking arm (83).

6. The automotive battery pack welding assembly fixture of claim 5, wherein: second otic placode (815) and template (82) between rotate through the pivot and be connected, third ear seat (810) block is in the outside of template (82), third axle pin (811) pass template (82) and extend to the outside of third ear seat (810), rotate through third axle pin (811) between third ear seat (810) and the template (82) and be connected, fourth ear seat (812) block is in the rear end of linking arm (83), fourth axle pin (813) pass linking arm (83) and extend to the outside of fourth ear seat (812), rotate through fourth axle pin (813) between fourth ear seat (812) and linking arm (83) and be connected.

7. The automobile battery pack welding assembly fixture of claim 5, wherein: speed governing connects (814) to be provided with two, every speed governing connects (814) to correspond the business turn over gas end of installing in second cylinder (89) outside, be L shape structural design between linking arm (83) and fixed block (84), first installation piece (85) are F shape structural design, second installation piece (87) and third compact heap (88) are provided with two sets ofly, two sets of second installation piece (87) and third compact heap (88) are installed respectively at the both sides of linking arm (83).

8. The automotive battery pack welding assembly fixture of claim 1, wherein: the first pressing mechanism (7) and the second pressing mechanism (8) are symmetrically arranged in two groups relative to the vertical central line of the bottom plate (1), and the number of the first pressing mechanism (7) and the number of the second pressing mechanism (8) in each group are multiple.

9. The automotive battery pack welding assembly fixture of claim 1, wherein: rings (2), first supporting seat (3), second supporting seat (4) and benchmark escutcheon board (5) are provided with two sets of about the horizontal centerline symmetry of bottom plate (1) respectively, every group first supporting seat (3) are provided with two, every group benchmark escutcheon board (5) equidistant are provided with four.

10. The automotive battery pack welding assembly fixture of claim 5, wherein: the second pressing block (86) extends to the center of the battery packaging plate piece (9) and is in contact with the upper end of the battery packaging plate piece (9).