CN217019759U

CN217019759U - Automobile parts front bumper punching welding device

Info

Publication number: CN217019759U
Application number: CN202220943248.1U
Authority: CN
Inventors: 钱伟
Original assignee: Zhengzhou Zhuoda Auto Parts Manufacturing Co ltd
Current assignee: Zhengzhou Zhuoda Auto Parts Manufacturing Co ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-07-22
Anticipated expiration: 2032-04-22

Abstract

The utility model discloses a punching and welding device for a front bumper of an automobile part, which comprises a base, a fixing frame, a motor, a gear ring, an adjusting device and a polishing piece, wherein the polishing piece and the adjusting device are detachably connected through an installing mechanism, and the inner side wall of the gear ring is provided with a dust collection mechanism for collecting polished chips; dust absorption mechanism is including seting up the ring channel at the ring gear lateral wall, and the dust absorption hole that a plurality of arrays set up is seted up to the bottom of ring channel, the dust absorption hole runs through the inside wall setting of ring gear. This kind of guarantee dashes before automobile parts welds device is convenient for install and dismantle the piece of polishing to be convenient for change it, simultaneously, be convenient for guarantee at the in-process of polishing, the piece of polishing offsets with welded joint all the time, guarantees the effect of polishing, and, can utilize the rotation of the in-process motor of polishing, realize carrying out automatic dust absorption to the dust that grinds the production, avoid the dust diffusion, environmental protection, health more, it is more convenient to use.

Description

Automobile parts front bumper punching welding device

Technical Field

The utility model relates to the technical field of automobile part production, in particular to a punching and welding device for a front bumper of an automobile part.

Background

Publication number CN208592496U discloses a preceding guarantor dashes to weld workshop section and uses towards welding set, including the base, the middle part fixed mounting on base top has the mount, and the fixed cover of inboard of mount bottom is equipped with the bearing, the inboard fixed cover in bearing middle part is equipped with grinding device, the top fixed mounting of mount has the motor, and one side fixed mounting at mount top has the leading wheel, the bottom of motor one side and the top interlock of leading wheel one side, and the bottom of leading wheel one side and the top interlock of grinding device one side. This protect towards welding device for workshop section before adopts the leading wheel to drive grinding device rotatory through the motor, makes grinding device can polish to automobile parts's seam, and two adjusting device can adjust two polishing pieces respectively, makes two polishing pieces can contact with automobile parts respectively, has effectively improved grinding device's polishing efficiency.

However, this kind of protect before towards for welding workshop section towards welding device when using, is not convenient for install and dismantle the polishing piece to be not convenient for change it, simultaneously, be not convenient for guarantee that the polishing piece offsets with welded joint all the time, and it is relatively poor to polish the effect, and during the dust that the in-process of polishing produced diffused the air easily, environmental protection inadequately influences operating personnel healthy.

Therefore, a need exists for a device for stamping and welding a front bumper of an automobile part to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a punching and welding device for a front bumper of an automobile part, and aims to solve the problems that when the existing punching and welding device for a front protection punching and welding workshop section, which is proposed in the background technology, is used, a polishing piece is inconvenient to mount and dismount, so that the polishing piece is inconvenient to replace, meanwhile, the polishing piece is inconvenient to be always abutted against a welding seam, the polishing effect is poor, and dust generated in the polishing process is easy to diffuse into the air, so that the environment is not protected, and the body health of an operator is influenced.

In order to achieve the purpose, the utility model provides the following technical scheme: a front bumper punching and welding device for automobile parts comprises a base, a fixing frame, a motor, a gear ring, an adjusting device and a polishing piece, wherein the polishing piece and the adjusting device are detachably connected through an installing mechanism, and a dust suction mechanism for collecting polished chips is arranged on the inner side wall of the gear ring;

dust absorption mechanism is including seting up the ring channel at the ring gear lateral wall, and the bottom of ring channel sets up the dust absorption hole that a plurality of arrays set up, the inside wall setting that the dust absorption hole runs through the ring gear, the lateral wall of ring channel rotates and is connected with the swivel becket, and the lateral wall fixedly connected with dust absorption pipe of swivel becket, the lateral wall of mount is provided with the updraft ventilator who is used for carrying out convulsions to the dust absorption pipe.

Preferably, the ventilation mechanism includes the support of fixed connection at the mount lateral wall, and the lateral wall fixedly connected with work cover of support, sliding connection has the closing plate in the work cover, and is provided with first canceling release mechanical system between closing plate and the work cover, the other end of dust absorption pipe is fixed with the lateral wall of work cover, and is provided with first check valve in the dust absorption pipe, the lateral wall fixedly connected with collecting pipe of work cover, and be provided with the second check valve in the collecting pipe, the removal of closing plate promotes through pushing mechanism.

Preferably, the first reset mechanism comprises two first fixing blocks which are symmetrically arranged and fixedly connected to the side wall of the working cover, two T-shaped guide rods which are symmetrically arranged are inserted into the side wall of each first fixing block, one end of each T-shaped guide rod is fixedly connected with a second fixing block, the second fixing blocks are fixed to the side wall of the sealing plate, and a first spring is sleeved on the side wall of each T-shaped guide rod.

Preferably, the pushing mechanism comprises a rotating disc fixedly sleeved at the output end of the motor, the side wall of the rotating disc is fixedly connected with a plurality of protruding blocks arranged in an array, and the side wall of each protruding block is provided with a fillet.

Preferably, installation mechanism includes the connecting rod of fixed connection at the polishing disc lateral wall, and the fixture block that two symmetries of lateral wall fixedly connected with of connecting rod set up, the fixed pipe of adjusting device's lateral wall fixedly connected with, and the notch that two symmetries set up is seted up to the lateral wall of fixed pipe, be connected with first movable plate through second canceling release mechanical system in the fixed pipe, and the lateral wall rotation of fixed pipe is connected with and rotates the cover, the logical groove that two symmetries set up is seted up to the tip that rotates the cover, and the draw-in groove that two symmetries set up is seted up to the tip that rotates the cover.

Preferably, the second reset mechanism includes a fixed disk fixedly connected in the fixed tube, a moving rod is inserted into an end of the fixed disk, one end of the moving rod is fixed to an end of the first moving plate, the other end of the moving rod is fixedly connected with a second moving plate, and an end of the second moving plate is connected to an end of the fixed tube through a second spring.

Preferably, damping fluid is filled between the fixed disc and the fixed tube, and a plurality of through holes are formed in the side wall of the second moving plate.

Preferably, a sealing ring is arranged on the side wall of the second moving plate matched with the fixed pipe.

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

1. the front-protection impact welding device for the automobile parts is characterized in that a dust suction mechanism and the like are arranged, when the polishing is carried out, a motor drives a gear ring to rotate, so that a polishing sheet is polished, meanwhile, when the motor rotates, a rotating disc is driven to rotate, when a lug abuts against a sealing plate, a sealing plate is pushed to move towards a working cover, a first spring contracts, when the lug passes over the sealing plate, the sealing plate moves and resets under the action of the first spring, so that the sealing plate moves in the working cover in a reciprocating mode, when the sealing plate moves outwards, negative pressure is generated in the working cover, meanwhile, a first one-way valve is opened, a second one-way valve is closed, at the moment, air is sucked through a dust suction pipe, dust and the like during polishing are sucked through a dust suction hole and enter the working cover through the dust suction pipe, when the sealing plate moves towards the working cover, air in the working cover is squeezed, simultaneously, first check valve closes, and the second check valve is opened, and at this moment, the gas in the work cover is collected through the collecting pipe after being extruded to can utilize the rotation of the in-process motor of polishing, realize carrying out automatic dust absorption to the dust that grinds the production, avoid the dust diffusion, environmental protection, health more, and it is more convenient when using.

2. According to the automobile part front protection punching and welding device, by arranging the installation mechanism and the like, when the polishing disc needs to be installed, firstly, the rotating sleeve is rotated to enable the through groove to be aligned with the notch, then, the connecting rod is inserted into the fixed pipe, meanwhile, the clamping block is inserted into the notch along the through groove, the polishing disc is pressed, the end part of the connecting rod is abutted against the first moving plate to enable the first moving plate to slide along the fixed pipe, meanwhile, the second spring is contracted, then, the rotating sleeve is rotated to align the clamping groove with the clamping block, then, the polishing disc is loosened, at the moment, the elastic force of the second spring pushes the second moving plate and the moving rod to move, and further the first moving plate and the connecting rod are pushed to move, so that the clamping block is clamped in the clamping groove, the rapid installation of the polishing disc is achieved, the installation is more convenient, and the looseness after the installation is avoided; when the grinding piece needs to be disassembled, the connecting rod is only required to be extruded into the fixing pipe, so that the clamping block is withdrawn from the clamping groove, then the rotating sleeve is rotated, the grinding piece is pulled to disassemble the through groove after the through groove is aligned with the clamping block, the quick disassembly of the grinding piece is realized, the disassembly is more convenient, and the later-stage replacement is convenient; simultaneously, the setting of second spring, can guarantee at the in-process of polishing, the piece of polishing offsets with welded joint all the time, guarantee the effect of polishing, and, when the piece in use of polishing takes place vibrations, make the first movable plate of connecting rod extrusion, make it slide in fixed intraductal, and simultaneously, drive the second movable plate and carry out the synchronous slip in fixed intraductal, at this moment, the second spring warp, play the first bradyseism effect, and simultaneously, damping fluid flows along the through-hole, form the damping effect, play the bradyseism effect of second time, make the bradyseism effect better, make the effect of polishing better.

Drawings

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

FIG. 2 is a schematic perspective view of the fixing frame of the present invention;

FIG. 3 is a schematic perspective view of another aspect of the fixing frame of the present invention;

FIG. 4 is a schematic sectional view of the fixing tube according to the present invention;

FIG. 5 is an enlarged schematic view of the structure at A in FIG. 2;

FIG. 6 is an enlarged view of the structure at B in FIG. 3;

fig. 7 is an enlarged schematic view of the structure at C in fig. 4.

In the figure: 101. a base; 102. a fixed mount; 103. an electric motor; 104. a ring gear; 105. an adjustment device; 106. grinding the sheets; 201. an annular groove; 202. a rotating ring; 203. a dust collection hole; 204. a dust collection pipe; 301. a support; 302. a working cover; 303. a collection tube; 304. sealing plates; 401. a first fixed block; 402. a T-shaped guide rod; 403. a second fixed block; 404. a first spring; 501. rotating the disc; 502. a bump; 503. round corners; 601. a connecting rod; 602. a clamping block; 603. fixing the tube; 604. a notch; 605. a first moving plate; 606. rotating the sleeve; 607. a through groove; 608. a card slot; 701. fixing the disc; 702. a travel bar; 703. a second moving plate; 704. a second spring; 8. and a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: a punching and welding device for a front bumper of an automobile part comprises a base 101, a fixing frame 102, a motor 103, a gear ring 104, an adjusting device 105 and a polishing piece 106, wherein the polishing piece 106 is detachably connected with the adjusting device 105 through an installing mechanism, and a dust suction mechanism for collecting polished chips is arranged on the inner side wall of the gear ring 104, so that the polishing piece 106 is convenient to install and detach, and is convenient to replace;

dust absorption mechanism is including seting up the ring channel 201 at ring gear 104 lateral wall, and the dust absorption hole 203 that a plurality of arrays set up is seted up to the bottom of ring channel 201, dust absorption hole 203 runs through the inside wall setting of ring gear 104, the lateral wall of ring channel 201 rotates and is connected with rotating ring 202, and the lateral wall fixedly connected with dust absorption pipe 204 of rotating ring 202, the lateral wall of mount 102 is provided with the air draft mechanism who is used for carrying out convulsions to dust absorption pipe 204, convulsions carry out through air draft mechanism, make dust when polishing etc. in being inhaled dust absorption pipe 204 through dust absorption hole 203, and collect in unison.

Further, the air draft mechanism comprises a support 301 fixedly connected to the side wall of the fixing frame 102, a working cover 302 is fixedly connected to the side wall of the support 301, a sealing plate 304 is connected in the working cover 302 in a sliding mode, a first reset mechanism is arranged between the sealing plate 304 and the working cover 302, the other end of the dust suction pipe 204 is fixed to the side wall of the working cover 302, a first one-way valve is arranged in the dust suction pipe 204, the conduction direction of the first one-way valve is from the annular groove 201 to the working cover 302, a collecting pipe 303 is fixedly connected to the side wall of the working cover 302, a second one-way valve is arranged in the collecting pipe 303, the conduction direction of the second one-way valve is from the inside to the outside of the working cover 302, the sealing plate 304 is pushed by a pushing mechanism, the sealing plate 304 moves in the working cover 302 in a reciprocating mode through the pushing mechanism, when the sealing plate 304 moves outwards, negative pressure is generated in the working cover 302, and meanwhile, the first one-way valve is opened, the second check valve closes, at this moment, carry out convulsions through dust absorption pipe 204, make dust when polishing etc. inhaled through dust absorption hole 203, and get into work cover 302 through dust absorption pipe 204, when closing plate 304 removes to work cover 302, extrude the air in the work cover 302, and simultaneously, first check valve closes, the second check valve is opened, at this moment, gas in the work cover 302 is collected through collecting pipe 303 after being extruded, thereby can utilize the rotation of in-process motor 103 of polishing, the realization carries out automatic dust absorption to the dust that grinds the production, avoid the dust diffusion, and environmental protection more, it is healthy, and, it is more convenient when using.

Further, the first reset mechanism comprises two first fixing blocks 401 which are symmetrically arranged and fixedly connected to the side wall of the working cover 302, two T-shaped guide rods 402 which are symmetrically arranged are inserted into the side wall of the first fixing block 401, a second fixing block 403 is fixedly connected to one end of each T-shaped guide rod 402, the second fixing blocks 403 are fixed to the side wall of the sealing plate 304, and a first spring 404 is sleeved on the side wall of each T-shaped guide rod 402 to guide and reset the movement of the sealing plate 304.

Further, pushing mechanism is including fixed cover establishing the rolling disc 501 at the motor 103 output, and the lateral wall fixedly connected with of rolling disc 501 lug 502 that a plurality of arrays set up, the lateral wall of lug 502 is provided with fillet 503, when polishing, drive the rotation of ring gear 104 through motor 103, make polishing piece 106 polish, meanwhile, motor 103 rotates, drive rolling disc 501 and rotate, when lug 502 offsets with sealing plate 304, promote the sealing plate 304 and remove to work cover 302, first spring 404 contracts simultaneously, when lug 502 crosses sealing plate 304, sealing plate 304 removes under the effect of first spring 404 and resets, thereby realize sealing plate 304 reciprocating motion in work cover 302.

Further, the mounting mechanism includes a connecting rod 601 fixedly connected to a side wall of the polishing plate 106, the side wall of the connecting rod 601 is fixedly connected with two symmetrically arranged clamping blocks 602, the side wall of the adjusting device 105 is fixedly connected with a fixing tube 603, the side wall of the fixing tube 603 is provided with two symmetrically arranged notches 604, the fixing tube 603 is connected with a first moving plate 605 through a second resetting mechanism, the side wall of the fixing tube 603 is rotatably connected with a rotating sleeve 606, the end of the rotating sleeve 606 is provided with two symmetrically arranged through grooves 607, and the end of the rotating sleeve 606 is provided with two symmetrically arranged clamping grooves 608, when the polishing plate 106 needs to be mounted, firstly, the rotating sleeve 606 is rotated to align the through grooves 607 with the notches 604, then, the connecting rod 601 is inserted into the fixing tube 603, meanwhile, the clamping blocks 602 are inserted into the notches 604 along the through grooves 607, and the polishing plate 106 is pressed, so that the end of the connecting rod 601 presses the first moving plate 605, the polishing plate is made to slide along the fixed pipe 603, meanwhile, the second spring 704 is made to contract, then, the rotating sleeve 606 is rotated to align the clamping groove 608 with the clamping block 602, then, the polishing sheet 106 is loosened, at the moment, the elastic force of the second spring 704 pushes the second moving plate 703 and the moving rod 702 to move, and further pushes the first moving plate 605 and the connecting rod 601 to move, so that the clamping block 602 is clamped in the clamping groove 608, the polishing sheet 106 is quickly installed, the installation is more convenient, and the looseness after the installation is avoided; when needs are dismantled, only need with connecting rod 601 extrusion in to fixed pipe 603 for fixture block 602 withdraws from draw-in groove 608, then rotates and rotates cover 606, makes logical groove 607 and fixture block 602 adjust the back well, and pulling polishing piece 106 can be dismantled it, has realized dismantling the quick dismantlement of polishing piece 106, and it is more convenient to dismantle, thereby is convenient for later stage change.

Further, the second reset mechanism includes a fixed disk 701 fixedly connected in the fixed tube 603, a moving rod 702 is inserted into an end of the fixed disk 701, one end of the moving rod 702 is fixed to an end of the first moving plate 605, the other end of the moving rod 702 is fixedly connected to a second moving plate 703, and an end of the second moving plate 703 is connected to an end of the fixed tube 603 through a second spring 704, so as to reset the movement of the first moving plate 605.

Further, damping fluid is filled between the fixed disc 701 and the fixed pipe 603, a plurality of through holes 8 are formed in the side wall of the second moving plate 703, and when the polishing disc 106 vibrates in use, the damping fluid flows along the through holes 8 to form a damping effect, so that the cushioning effect is better, and the polishing effect is better.

Further, the side wall of the second moving plate 703, which is matched with the fixed pipe 603, is provided with a sealing ring, so that the sealing performance is ensured, and the damping fluid is prevented from flowing from the side wall.

The working principle is as follows: when the polishing machine is used, firstly, when the polishing is carried out, the motor 103 drives the gear ring 104 to rotate, so that the polishing plate 106 is polished, meanwhile, when the motor 103 rotates, the rotating disc 501 is driven to rotate, when the bump 502 abuts against the sealing plate 304, the sealing plate 304 is pushed to move towards the inside of the working cover 302, meanwhile, the first spring 404 contracts, when the bump 502 crosses the sealing plate 304, the sealing plate 304 moves and resets under the action of the first spring 404, so that the sealing plate 304 moves towards and away from the inside of the working cover 302, when the sealing plate 304 moves towards the outside, negative pressure is generated in the working cover 302, meanwhile, the first one-way valve is opened, the second one-way valve is closed, at the moment, air is sucked through the dust suction pipe 204, so that dust and the like during polishing are sucked through the dust suction hole 203 and enter the working cover 302 through the dust suction pipe 204, when the sealing plate 304 moves towards the inside of the working cover 302, the air in the working cover 302 is extruded, meanwhile, the first one-way valve is closed, the second one-way valve is opened, and at the moment, the air in the working cover 302 is extruded and then collected through the collecting pipe 303, so that the rotation of the motor 103 in the polishing process can be utilized, the dust generated by polishing is automatically sucked, the dust diffusion is avoided, and the dust collecting device is more environment-friendly and healthy and is more convenient to use;

when the polishing plate 106 needs to be installed, firstly, the rotating sleeve 606 is rotated to align the through groove 607 with the notch 604, then the connecting rod 601 is inserted into the fixing tube 603, meanwhile, the fixture block 602 is inserted into the notch 604 along the through groove 607, and the polishing plate 106 is pressed, so that the end of the connecting rod 601 abuts against and presses the first moving plate 605, and at the same time, the second spring 704 is contracted, then, the rotating sleeve 606 is rotated to align the clamping groove 608 with the fixture block 602, then, the polishing plate 106 is loosened, at this time, the elastic force of the second spring 704 pushes the second moving plate 703 and the moving rod 702 to move, and further pushes the first moving plate 605 and the connecting rod 601 to move, so that the fixture block 602 is clamped in the clamping groove 608, thereby realizing quick installation of the polishing plate 106, being more convenient to install, and avoiding looseness after installation;

when the grinding piece 106 needs to be detached, the connecting rod 601 only needs to be extruded into the fixing tube 603, so that the clamping block 602 is withdrawn from the clamping groove 608, then the rotating sleeve 606 is rotated, the through groove 607 is aligned with the clamping block 602, and then the grinding piece 106 is pulled to be detached, so that the grinding piece 106 is rapidly detached, the detachment is more convenient, and the later-stage replacement is facilitated; meanwhile, the second spring 704 is arranged, the polishing piece 106 can be guaranteed to be always abutted to a welding joint in the polishing process, the polishing effect is guaranteed, when the polishing piece 106 vibrates in use, the connecting rod 601 is made to extrude the first moving plate 605 to enable the first moving plate to slide in the fixing pipe 603, meanwhile, the second moving plate 703 is driven to synchronously slide in the fixing pipe 603, at the moment, the second spring 704 deforms, the first cushioning effect is achieved, meanwhile, damping liquid flows along the through hole 8, the damping effect is formed, the second cushioning effect is achieved, the cushioning effect is better, and the polishing effect is better.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a car spare part front bumper impulse welding device, includes base (101), mount (102), motor (103), ring gear (104), adjusting device (105) and piece (106) of polishing, its characterized in that: the polishing piece (106) and the adjusting device (105) are detachably connected through a mounting mechanism, and a dust suction mechanism for collecting polished chips is arranged on the inner side wall of the gear ring (104);

dust absorption mechanism is including offering ring channel (201) at ring gear (104) lateral wall, and the bottom of ring channel (201) sets up dust absorption hole (203) that a plurality of arrays set up, the inside wall setting that ring gear (104) were run through in dust absorption hole (203), the lateral wall of ring channel (201) rotates and is connected with swivel becket (202), and the lateral wall fixedly connected with dust absorption pipe (204) of swivel becket (202), the lateral wall of mount (102) is provided with the exhaust mechanism who is used for carrying out convulsions to dust absorption pipe (204).

2. The automobile part front bumper punching and welding device according to claim 1, characterized in that: air draft mechanism includes support (301) of fixed connection at mount (102) lateral wall, and the lateral wall fixedly connected with work cover (302) of support (301), sliding connection has closing plate (304) in work cover (302), and is provided with first canceling release mechanical system between closing plate (304) and the work cover (302), the other end of dust absorption pipe (204) is fixed with the lateral wall of work cover (302), and is provided with first check valve in dust absorption pipe (204), the lateral wall fixedly connected with collecting pipe (303) of work cover (302), and be provided with the second check valve in collecting pipe (303), the removal of closing plate (304) promotes through pushing mechanism.

3. The apparatus for press-welding a front bumper as set forth in claim 2, wherein: the first reset mechanism comprises two first fixing blocks (401) which are symmetrically arranged on the side wall of the working cover (302), two T-shaped guide rods (402) which are symmetrically arranged are inserted into the side wall of each first fixing block (401), each T-shaped guide rod (402) is fixedly connected with a second fixing block (403) at one end of each T-shaped guide rod (402), each second fixing block (403) is fixed to the side wall of the sealing plate (304), and each first spring (404) is sleeved on the side wall of each T-shaped guide rod (402).

4. The automobile part front bumper punching and welding device according to claim 2, characterized in that: the pushing mechanism comprises a rotating disc (501) fixedly sleeved at the output end of the motor (103), the side wall of the rotating disc (501) is fixedly connected with a plurality of protruding blocks (502) arranged in an array, and round corners (503) are arranged on the side wall of the protruding blocks (502).

5. The automobile part front bumper punching and welding device according to claim 1, characterized in that: installation mechanism includes connecting rod (601) of fixed connection at polishing piece (106) lateral wall, and the lateral wall fixedly connected with fixture block (602) that two symmetries of connecting rod (601) set up, the fixed pipe (603) of lateral wall fixedly connected with of adjusting device (105), and the lateral wall of fixed pipe (603) sets up notch (604) that two symmetries set up, be connected with first movable plate (605) through second canceling release mechanical system in fixed pipe (603), and the lateral wall of fixed pipe (603) rotates and is connected with and rotates cover (606), the logical groove (607) that two symmetries set up is seted up to the tip of rotating cover (606), and the draw-in groove (608) that two symmetries set up are seted up to the tip of rotating cover (606).

6. The apparatus for press-welding a front bumper as set forth in claim 5, wherein: the second reset mechanism comprises a fixed disc (701) fixedly connected in a fixed pipe (603), a moving rod (702) is inserted into the end of the fixed disc (701), one end of the moving rod (702) is fixed with the end of a first moving plate (605), the other end of the moving rod (702) is fixedly connected with a second moving plate (703), and the end of the second moving plate (703) is connected with the end of the fixed pipe (603) through a second spring (704).

7. The apparatus for press-welding a front bumper as set forth in claim 6, wherein: damping fluid is filled between the fixed disc (701) and the fixed pipe (603), and a plurality of through holes (8) are formed in the side wall of the second moving plate (703).

8. The automobile part front bumper punching and welding device according to claim 6, characterized in that: and a sealing ring is arranged on the side wall of the second moving plate (703) matched with the fixed pipe (603).