CN211135987U

CN211135987U - Be applied to automotive protection spare's automatic weld equipment

Info

Publication number: CN211135987U
Application number: CN201920834015.6U
Authority: CN
Inventors: 杨猛; 胡立峰; 朱雨; 陈曦; 郑海鹏
Original assignee: Tianjin Yingli Mold Manufacturing Co ltd
Current assignee: Tianjin Yingli Mold Manufacturing Co ltd
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2020-07-31
Anticipated expiration: 2029-06-04

Abstract

The utility model provides an automatic weld equipment for car protector belongs to the technical field of car parts processing, including positioning and clamping device and transport positioner, positioning and clamping device is including distributing at energy-absorbing box first centre gripping subassembly all around, the second centre gripping subassembly, go up centre gripping subassembly and locating component, it presses in the energy-absorbing box upper end through the centre gripping support to go up the centre gripping subassembly, first centre gripping subassembly and second centre gripping subassembly symmetry set up in the energy-absorbing box both sides, carry positioner's sixth cylinder and seventh cylinder and carry a welding to the energy-absorbing box in through control connecting rod and positioning seat, accomplish the weldment work of welding in the energy-absorbing box. The utility model discloses simple structure can carry the location to the work piece fast, and stability is good, complies with robot welding efficiency, makes the welding effect obtain improving, reduces the disability rate of product.

Description

Be applied to automotive protection spare's automatic weld equipment

Technical Field

The utility model belongs to the technical field of the processing of automobile parts, a be applied to automobile protection spare's automatic weld equipment is related to.

Background

According to the current automobile safety theory, the automobile body can be divided into an energy absorption area and an occupant safety area, and an energy absorption box is an important part of the energy absorption area, can absorb a considerable part of collision energy during collision, relieves impact force, protects the collision safety of the automobile body, and has important significance for the safety of vehicles and occupants. Therefore, the assembly size of the parts has higher precision requirement, the manual assembly at the present stage can not meet the requirements of the size and the planeness, and meanwhile, the manual assembly is inconvenient to position when the movable area of the welding position is small.

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to provide an automatic weld equipment of being applied to automobile protection spare that can carry the location to the work piece fast, stability is good.

In order to solve the technical problem, the utility model discloses a technical scheme is:

be applied to auto-welding equipment of auto-guard spare, including location clamping device and transport positioner, location clamping device is including distributing at energy-absorbing box first centre gripping subassembly all around, second centre gripping subassembly, go up centre gripping subassembly and locating component, it includes ninth cylinder, centre gripping support, fourth base and third connecting plate to go up the centre gripping subassembly, centre gripping support one end rotates with the third connecting plate to be connected, and other end downside is pressed on the energy-absorbing box up end through last grip block, ninth cylinder drive centre gripping support is along rotating with third connecting plate link, first centre gripping subassembly and second centre gripping subassembly symmetry set up in energy-absorbing box both sides, first centre gripping subassembly is equipped with outer fixture block and lower fixture block, the energy-absorbing box sets up in lower fixture block upper end, blocks outside the fixture block inboard all around, transport positioner includes sixth cylinder, The welding piece longitudinal movement device comprises a seventh cylinder, a connecting rod and a positioning seat, wherein the driving end of the sixth cylinder is connected with a first connecting plate, the seventh cylinder is arranged on the first connecting plate, the driving end of the seventh cylinder is connected with a second connecting plate, the second connecting plate is arranged at the upper end of the first connecting plate and is in sliding connection with the first connecting plate, the second connecting plate is connected with the positioning seat through the connecting rod, a welding piece is arranged on the positioning seat, the positioning seat drives the welding piece to move longitudinally through the sixth cylinder, and the positioning seat drives the welding piece to move transversely through the seventh cylinder.

Furthermore, the centre gripping support is the fork type structure, a plurality of first sensors are equipped with on the centre gripping support, the bolt that first sensor and energy-absorbing box upper end were equipped with corresponds the setting, centre gripping support lower extreme is provided with spacing lug, be provided with spacing lug on the third connecting plate and correspond the spacing concave block that sets up, the third connecting plate is fixed to be set up on the fourth base, the ninth cylinder sets up in fourth base one side, the ninth cylinder rotates with the third connecting plate to be connected.

Furthermore, the number of the lower clamping blocks and the number of the outer clamping blocks are multiple and are all connected with a fourth connecting plate, chamfering angles are arranged at the upper ends of the outer clamping blocks, the fourth connecting plate is arranged on a fifth base, the fourth connecting plate is connected with multiple connecting rods, and sensors which are arranged corresponding to the threaded rods on the energy absorption boxes are arranged on the connecting rods.

Furthermore, the positioning assembly comprises a sixth base, an eighth cylinder, a fifth connecting plate and a second positioning pin, the eighth cylinder is arranged on the sixth base, the driving end of the eighth cylinder is connected with the fifth connecting plate, the second positioning pin is perpendicularly connected with the fifth connecting plate, the second positioning pin and the energy absorption box are correspondingly provided with damping holes, the sixth base is provided with a fixedly connected limiting connecting rod, the limiting connecting rod is of an L type structure, one end of the limiting connecting rod is arranged in front of the fifth connecting plate, and the limiting connecting rod is arranged below the second positioning pin.

Furthermore, a sensor is arranged on the positioning seat and penetrates into the positioning seat to be in induction contact with the side end face of the welding part.

Furthermore, the lower end of the positioning seat is connected with a sixth connecting block, one side of the sixth connecting block is connected with a seventh connecting block, the seventh connecting block is arranged on one side of the positioning seat, the welding piece is clamped between the seventh connecting block and the positioning seat, an elastic piece is arranged in the seventh connecting block, one end of the elastic piece is in contact with the welding piece, and the elastic piece and the sensor are oppositely arranged on two sides of the welding piece.

Furthermore, one side of the first connecting plate is connected with one end of a connecting rod, the connecting rod is of an L-shaped structure, a limiting column is arranged at the other end of the connecting rod, the limiting column is arranged adjacent to the second connecting plate, the adjacent end of the limiting column and the second connecting plate is made of rubber, a fifth gasket is arranged between the positioning seat and the connecting rod, a sixth gasket is arranged between the connecting rod and the sixth connecting block, and a seventh gasket is arranged between the sixth connecting block and the seventh connecting block.

Furthermore, the sixth cylinder is obliquely arranged on the third base, and the sixth cylinder and the seventh cylinder are vertically arranged.

Furthermore, a cylinder protective cover is arranged above the seventh cylinder and fixedly connected with the second connecting plate, and the cylinder protective cover is in sliding connection with the first connecting plate.

Compared with the prior art, the utility model has the advantages and positive effect as follows.

1. The utility model discloses an it realizes inhaling six to fixed of ability box to go up centre gripping subassembly, first centre gripping subassembly, second centre gripping subassembly and locating component, guarantees follow-up weldment work's stability.

2. The utility model discloses go up centre gripping subassembly, first centre gripping subassembly and second centre gripping subassembly and all be provided with the sensor of connecting screw on the response energy-absorbing box, location accuracy before very high energy-absorbing box weldment work.

3. The utility model discloses the welding piece realizes the bidirection through sixth cylinder and seventh cylinder drive and removes, and the welding ground space is less, and the welding position can be accurately confirmed when the separation thing is more.

4. The utility model discloses between positioning seat and the connecting rod are connected, between sixth connecting block and the positioning seat are connected, sixth connecting block and seventh connecting block are connected between all being provided with the gasket, according to the size of welding, increase, reduce or polish and correspond the gasket, the suitability is strong.

5. The utility model discloses simple structure can fix the work piece fast and carry the location accurate, and stability is good, follows in robot welding efficiency, makes the welding effect obtain improving, reduces the disability rate of product.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural view of an automatic welding apparatus applied to a guard of an automobile according to the present invention;

FIG. 2 is a schematic view of the positioning and clamping device for protecting parts of a vehicle according to the present invention;

FIG. 3 is a schematic structural view of the upper clamping assembly of the present invention;

fig. 4 is a schematic structural view of the first clamping assembly and the second clamping assembly of the present invention;

fig. 5 is a schematic structural view of the positioning assembly of the present invention;

FIG. 6 is a schematic view of the conveying and positioning mechanism for welding auto parts of the present invention;

FIG. 7 is a schematic structural view of the conveying and positioning mechanism for welding auto parts of the present invention;

fig. 8 is a schematic structural diagram of the connecting rod, the positioning seat, the sixth connecting block and the seventh connecting block of the present invention.

Description of reference numerals:

101. a third base; 102. a sixth cylinder; 103. a first connecting plate; 104. a seventh cylinder; 105. a cylinder protective cover; 106. a second connecting plate; 107. a first connecting rod; 108. a limiting column; 109. a connecting rod; 110. positioning seats; 111. a sensor; 112. a sixth connecting block; 113. a seventh connecting block; 114. an elastic member; 115. a welding part; 116. a fifth pad; 117. a sixth gasket; 118. a seventh gasket; 201. a ninth cylinder; 202. a fourth base; 203. a third connecting plate; 204. clamping the bracket; 205. a first sensor; 206. an upper clamping block; 207. a limiting bump; 208. a limit concave block; 209. a fifth base; 210. a fourth connecting plate; 211. a second connecting rod; 212. an outer clamping block; 213. a lower clamping block; 214. a second sensor; 215. a sixth base; 216. an eighth cylinder; 217. a fifth connecting plate; 218. a second positioning pin; 219. a limiting connecting rod; 220-crash box.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 8, the automatic welding device applied to the automobile protection part comprises a positioning and clamping device and a conveying and positioning device, wherein the positioning and clamping device comprises a first clamping assembly, a second clamping assembly, an upper clamping assembly and a positioning assembly which are distributed around an energy absorption box 220, the upper clamping assembly comprises a ninth cylinder 201, a clamping bracket 204, a fourth base 202 and a third connecting plate 203, one end of the clamping bracket 204 is rotatably connected with the third connecting plate 203, the lower side of the other end is pressed on the upper end surface of the energy absorption box 220 through an upper clamping block 206, the ninth cylinder 201 drives the clamping bracket 204 to rotate along the connecting end with the third connecting plate 203, the first clamping assembly and the second clamping assembly are symmetrically arranged at two sides of the energy absorption box 220, the first clamping assembly is provided with an outer clamping block 212 and a lower clamping block 213, the energy absorption box 220 is arranged at the upper end of the lower clamping block 213, the periphery is clamped at the inner side of the outer clamping block 212, the, the periphery of the clamping bracket 204 is clamped at the inner side of an outer clamping block 212, a ninth cylinder 201 controls the clamping bracket 204 to rotate downwards along the connecting end with a third connecting plate 203, the lower end surface of the clamping bracket 204 is connected with an upper clamping block 206 and drives the upper clamping block 206 to be pressed on the upper end surface of an energy absorption box 220, so as to realize the fixation of the energy absorption box 220, a conveying and positioning device comprises a sixth cylinder 102, a seventh cylinder 104, a connecting rod 109 and a positioning seat 110, the driving end of the sixth cylinder 102 is connected with a first connecting plate 103, the seventh cylinder 104 is arranged on the first connecting plate 103, the driving end of the seventh cylinder 104 is connected with a second connecting plate 106, the second connecting plate 106 is arranged at the upper end of the first connecting plate 103, the second connecting plate and the first connecting plate are in sliding connection, the second connecting plate 106 is connected with the positioning seat 110 through the connecting rod 109, a welding piece 115 is arranged on the positioning seat 110, the sixth cylinder controls the welding piece to move up and down obliquely through the seventh cylinder, and the seventh cylinder controls the positioning seat to move left and right, so that the welding piece is ensured to reach an appointed welding position.

As shown in fig. 2 and 3, preferably, the clamp bracket 204 has a fork-shaped structure, and a plurality of first sensors 205 are mounted on the clamp bracket 204, the first sensors 205 are disposed corresponding to bolts provided at the upper end of the crash box 220, the accurate positioning of the energy absorption box is realized by sensing the position of a connecting bolt at the upper end of the energy absorption box through a first sensor, a limiting convex block 207 is arranged at the lower end of a clamping bracket 204, a limiting concave block 208 which is correspondingly arranged on the limiting convex block 207 is arranged on a third connecting plate 203, the third connecting plate 203 is fixedly arranged on a fourth base 202, a ninth cylinder 201 is arranged at one side of the fourth base 202, the ninth cylinder 201 is rotatably connected with the third connecting plate 203, the limiting convex block 207 and the limiting concave block 208 play a limiting role in the rotation of the clamping bracket 204, and when the ninth cylinder 201 controls the rotation of the clamping bracket 204, the ninth cylinder 201 is rotated in a certain direction along the connection end with the third connection plate 203.

As shown in fig. 4, preferably, the number of the lower clamping blocks 213 and the number of the outer clamping blocks 212 are both multiple and are connected with the fourth connecting plate 210, the upper ends of the outer clamping blocks 212 are provided with bevels, which is convenient for the energy absorption box to be placed, the fourth connecting plate 210 is arranged on the fifth base 209, the fourth connecting plate 210 is connected with multiple second connecting rods 211, the second connecting rods 211 are provided with second sensors 214 which are arranged corresponding to the screws on the energy absorption box 220, the second sensors 214 sense the connecting screws at corresponding positions on the energy absorption box 220, and accurate positioning is ensured.

As shown in fig. 5, preferably, the positioning assembly includes a sixth base 215, an eighth cylinder 216, a fifth connecting plate 217 and a second positioning pin 218, the eighth cylinder 216 is disposed on the sixth base 215, a driving end of the eighth cylinder 216 is connected to the fifth connecting plate 217, the second positioning pin 218 is vertically connected to the fifth connecting plate 217, the second positioning pin 218 is disposed corresponding to a shock absorbing hole on the energy absorbing box 220, the eighth cylinder 216 drives the second positioning pin 218 to move towards a lightening hole of the energy absorbing box 220, the positioning pin 218 is inserted into the lightening hole to achieve positioning, a limit link 219 is fixedly connected to the sixth base 215, the limit link 219 is of an L type structure, one end of the limit link 219 is disposed in front of the fifth connecting plate 217, the limit link 219 is disposed below the second positioning pin 218, and the limit link 219 plays a role in limiting a driving stroke of the eighth cylinder 216.

As shown in fig. 3 to 8, preferably, a sensor 111 is disposed on the positioning seat 110, the sensor 111 penetrates into the positioning seat 110 to be in inductive contact with the side end surface of the welding member 115, and the sensor 111 senses whether the welding member 115 is on the positioning seat 110, so as to avoid falling off, and ensure normal operation.

As shown in fig. 6 and 8, preferably, the lower end of the positioning seat 110 is connected to a sixth connecting block 112, one side of the sixth connecting block 112 is connected to a seventh connecting block 113, the seventh connecting block 113 is disposed on one side of the positioning seat 110, and the welding member 115 is clamped between the seventh connecting block 113 and the positioning seat 110, so that the fixing is facilitated, an elastic member 114 is disposed in the seventh connecting block 113, one end of the elastic member 114 is disposed in contact with the welding member 115, and the elastic member 114 and the sensor 111 are disposed on two sides of the welding member 115, so that the welding process of the welding member is.

As shown in fig. 6 and 8, preferably, one side of the first connecting plate 103 is connected to one end of a first connecting rod 107, the first connecting rod 107 is of an L-type structure, the other end of the first connecting rod 107 is provided with a limiting column 108, the limiting column 108 is arranged adjacent to the second connecting plate 106, the adjacent end of the limiting column 108 and the second connecting plate 106 is made of rubber, so as to limit the driving end of the seventh cylinder, a fifth gasket 116 is arranged between the positioning seat 110 and the connecting rod 109, a sixth gasket 117 is arranged between the connecting rod 109 and the sixth connecting block 112, a seventh gasket 118 is arranged between the sixth connecting block 112 and the seventh connecting block 113, and according to the size of the welding part 115, corresponding gaskets are increased, decreased or polished, so that the applicability is strong.

As shown in fig. 8, it is preferable that the sixth cylinder 102 is obliquely disposed on the third base 101, and the sixth cylinder 102 is disposed perpendicular to the seventh cylinder 104.

As shown in fig. 6 and 8, preferably, a cylinder protective cover 105 is disposed above the seventh cylinder 104, the cylinder protective cover 105 is fixedly connected to the second connecting plate 106, and the cylinder protective cover 105 is slidably connected to the first connecting plate 103, so as to prolong the service life of the cylinder.

The practical working process is that an energy absorption box 220 is placed on a lower clamping block 213 of a first clamping assembly and a second clamping assembly, the periphery of the energy absorption box is clamped inside an outer clamping block 212, the first clamping assembly and the second clamping assembly are symmetrically arranged on two sides of the energy absorption box 220, a lower clamping block 213 and the outer clamping block 212 are arranged on a fourth connecting plate 210, the fourth connecting plate 210 is arranged on a fifth base 209, the fourth connecting plate 210 is connected with a plurality of second connecting rods 211, a plurality of second sensors 214 connected with screws on the induction energy absorption box 220 are arranged on the second connecting rods 211, an eighth cylinder 216 controls a second positioning pin 218 to be inserted into a lightening hole of the energy absorption box 220, so that the energy absorption box 220 is positioned, a ninth cylinder 201 controls a clamping support 204 to rotate downwards, an upper clamping block 206 arranged at the lower end of the clamping support 204 is pressed at the upper end of the box 220, the upper clamping block 206 is arranged corresponding to the lower clamping block 213, a connecting block 206 arranged on the upper end of the clamping support 204, a connecting block 115, a first sensor 205 connected with a screw on the induction box 220 is arranged on the clamping support 204, a connecting plate, a connecting block 103, a connecting block is arranged corresponding to a connecting block 103, a connecting block 103 is arranged on one side of a connecting block 110, a connecting block 106, a connecting block 103 is arranged on a connecting block, a connecting rod 103, a connecting block 106, a connecting block 103 connecting block, a connecting block 103 is arranged between a connecting block, a connecting block 106 and a connecting block, a connecting block 100, a connecting block, a connecting block, a connecting block 103, a connecting block.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Be applied to automatic weld equipment of car protection part, its characterized in that: the energy absorption box clamping device comprises a positioning clamping device and a conveying positioning device, wherein the positioning clamping device comprises a first clamping assembly, a second clamping assembly, an upper clamping assembly and a positioning assembly which are distributed on the periphery of an energy absorption box (220), the upper clamping assembly comprises a ninth cylinder (201), a clamping support (204), a fourth base (202) and a third connecting plate (203), one end of the clamping support (204) is rotatably connected with the third connecting plate (203), the lower side of the other end of the clamping support is pressed on the upper end surface of the energy absorption box (220) through an upper clamping block (206), the ninth cylinder (201) drives the clamping support (204) to rotate along the connecting end with the third connecting plate (203), the first clamping assembly and the second clamping assembly are symmetrically arranged on two sides of the energy absorption box (220), the first clamping assembly is provided with an outer clamping block (212) and a lower clamping block (213), the energy absorption box (220) is arranged at the upper end of the lower clamping block (213), the periphery of the conveying positioning device is clamped at the inner side of an outer clamping block (212), the conveying positioning device comprises a sixth air cylinder (102), a seventh air cylinder (104), a connecting rod (109) and a positioning seat (110), the driving end of the sixth air cylinder (102) is connected with the first connecting plate (103), the seventh air cylinder (104) is arranged on the first connecting plate (103), the driving end of the seventh cylinder (104) is connected with a second connecting plate (106), the second connecting plate (106) is arranged at the upper end of the first connecting plate (103) and is in sliding connection with the first connecting plate, the second connecting plate (106) is connected with the positioning seat (110) through a connecting rod (109), the welding piece (115) is arranged on the positioning seat (110), the positioning seat (110) drives the welding part (115) to move longitudinally through a sixth air cylinder (102), the positioning seat (110) drives the welding part (115) to move transversely through the seventh air cylinder (104).

2. The automatic welding device applied to the automobile guard according to claim 1, characterized in that: the utility model discloses a clamping support, including centre gripping support (204), clamping support (204), energy-absorbing box (220), first sensor (205) are equipped with a plurality of first sensors (205) on the clamping support (204), first sensor (205) correspond the setting with the bolt that energy-absorbing box (220) upper end was equipped with, clamping support (204) lower extreme is provided with spacing lug (207), be provided with spacing concave block (208) that spacing lug (207) correspond the setting on third connecting plate (203), third connecting plate (203) are fixed to be set up on fourth base (202), ninth cylinder (201) set up in fourth base (202) one side, ninth cylinder (201) rotate with third connecting plate (203) and are connected.

3. The automatic welding device applied to the automobile guard according to claim 1, characterized in that: the lower clamping blocks (213) and the outer clamping blocks (212) are in a plurality of numbers and are connected with a fourth connecting plate (210), chamfering angles are arranged at the upper ends of the outer clamping blocks (212), the fourth connecting plate (210) is arranged on a fifth base (209), a plurality of second connecting rods (211) are connected onto the fourth connecting plate (210), and second sensors (214) which are arranged corresponding to the upper screw rods of the energy absorption boxes (220) are arranged on the second connecting rods (211).

4. The automatic welding equipment applied to the automobile guard is characterized in that the positioning assembly comprises a sixth base (215), an eighth air cylinder (216), a fifth connecting plate (217) and a second positioning pin (218), the eighth air cylinder (216) is arranged on the sixth base (215), the driving end of the eighth air cylinder (216) is connected with the fifth connecting plate (217), the second positioning pin (218) is vertically connected with the fifth connecting plate (217), the second positioning pin (218) is correspondingly arranged with a damping hole in the energy absorption box (220), a limiting connecting rod (219) is fixedly connected onto the sixth base (215), the limiting connecting rod (219) is of an L type structure, one end of the limiting connecting rod (219) is arranged in front of the fifth connecting plate (217), and the limiting connecting rod (219) is arranged below the second positioning pin (218).

5. The automatic welding device applied to the automobile guard according to claim 1, characterized in that: a sensor (111) is arranged on the positioning seat (110), and the sensor (111) penetrates into the positioning seat (110) to be in induction contact with the side end face of the welding part (115).

6. The automatic welding device applied to the automobile guard according to claim 1, characterized in that: the lower end of the positioning seat (110) is connected with a sixth connecting block (112), one side of the sixth connecting block (112) is connected with a seventh connecting block (113), the seventh connecting block (113) is arranged on one side of the positioning seat (110), the welding piece (115) is clamped between the seventh connecting block (113) and the positioning seat (110), an elastic piece (114) is arranged in the seventh connecting block (113), one end of the elastic piece (114) is in contact with the welding piece (115), and the elastic piece (114) and the sensor (111) are oppositely arranged on two sides of the welding piece (115).

7. The automatic welding equipment applied to the automobile protection part is characterized in that one side of the first connecting plate (103) is connected with one end of a first connecting rod (107), the first connecting rod (107) is of an L type structure, the other end of the first connecting rod (107) is provided with a limiting column (108), the limiting column (108) is arranged adjacent to the second connecting plate (106), the adjacent end of the limiting column (108) and the second connecting plate (106) is made of rubber, a fifth gasket (116) is arranged between the positioning seat (110) and the connecting rod (109), a sixth gasket (117) is arranged between the connecting rod (109) and the sixth connecting block (112), and a seventh gasket (118) is arranged between the sixth connecting block (112) and the seventh connecting block (113).

8. The automatic welding device applied to the automobile guard according to claim 1, characterized in that: the sixth air cylinder (102) is obliquely arranged on the third base (101), and the sixth air cylinder (102) and the seventh air cylinder (104) are vertically arranged.

9. The automatic welding device applied to the automobile guard according to claim 1, characterized in that: a cylinder protective cover (105) is arranged above the seventh cylinder (104), the cylinder protective cover (105) is fixedly connected with the second connecting plate (106), and the cylinder protective cover (105) is in sliding connection with the first connecting plate (103).