A kind of jaw pin retention mechanisms that is used for the automobile welding
Technical field
The utility model relates to automobile processing and welding technology field, relates in particular to a kind of detent mechanism that is used for the automobile welding, promptly has the alignment pin of jaw.
Background technology
General body of a motor car is made of more than 400 stamping parts, and the welding through multiple working procedure finally becomes a vehicle body.When the welding of each station, could weld the accessory size assurance uniformity after guaranteeing like this to weld after all needing anchor clamps to position.Therefore detent mechanism utilization in a large number in the automobile body welding process, detent mechanism is mainly two pin one side location at present, and promptly each part is located with locating surface of two alignment pins.
But because the design feature of parts, parts exist housing (promptly inside is hollow) or body bottom location, all can't compress the location from top increase seal face.Causing parts and supporting surface not to fit easily puts in place, the bounce-back of welding deformation amount and plate during welding, the parts after causing welding warp, and homogeneity of product can't guarantee, the size of influence welding back parts causes problems such as all kinds of assemblings of vehicle body and security performance.
The utility model content
The utility model provides a kind of easy to use, effective alignment pin that has jaw, is used for the location of automobile welding assembly.
A kind of jaw pin retention mechanisms that is used for automobile welding comprises bearing and is fixed on alignment pin on this bearing that described alignment pin has perforation gathering sill radially, is provided with along alignment pin to extend radially out or the location hook of this gathering sill of retraction.
Can compress the automobile component that needs the location when location hook stretches out gathering sill, during location hook retraction gathering sill, automobile component can break away from from alignment pin.
In order to realize that location hook can adopt multiple type of drive along alignment pin moving radially, as preferably, be provided with jaw, described jaw comprises:
Fork;
Described location hook is fixed on an end of fork;
Connecting rod, an end of connecting rod is hinged by an end that has location hook of first rotating shaft and fork, and the other end of connecting rod is hinged by second rotating shaft and bearing;
Cylinder, its cylinder barrel and bearing are fixed, and the end away from location hook of piston rod and fork is hinged.
Air cylinder driven fork, fork can drive described location hook along alignment pin moving radially.
As preferably, the piston rod of described cylinder is parallel to the axial arranged of described alignment pin.
As preferably, the bottom of described bearing is provided with support column.Can adjust the height of support column as required.
Described bearing top has a shape carriage, and this shape carriage is made of horizontal top board and two risers that are connected the top board both sides, has pin-and-hole on the wherein said top board, and the top of described alignment pin passes this pin-and-hole and fixes with respect to top board.
Described two riser correspondences be provided with circular hole, the two ends of described first rotating shaft are positioned at corresponding circular hole.Described circular hole cooperates with the gap between two ends of first rotating shaft.The two ends of first rotating shaft can be in circular hole appropriate exercise, to cooperate moving of location hook.
The corresponding position of the gathering sill of described top board and alignment pin has the installation gap, and when location hook was installed, location hook entered into the gathering sill of alignment pin by this installation gap.
The sidewall of described top board has the locking screw that is communicated with the pin-and-hole inwall, can the locking positioning pin by clamping screw.
It is simple in structure easy to use that the utility model is used for the jaw pin retention mechanisms of automobile welding, and utilizing movably, location hook can effectively solve the problem that ghost formula parts are difficult to compress the location.Utilizing lever principle can clamp by little cylinder puts in place.Effectively solved compressing and locating of little locating hole parts.Can also the size of each building block be done corresponding adjustment according to the size in different automobile types aperture.
Description of drawings
Fig. 1 is the perspective view of a kind of jaw pin retention mechanisms of the utility model;
Fig. 2 is the perspective view of bearing in the jaw pin retention mechanisms of Fig. 1;
Fig. 3 is the perspective view of jaw (omission cylinder) in the jaw pin retention mechanisms of Fig. 1;
Fig. 4 is the perspective view of alignment pin in the jaw pin retention mechanisms of Fig. 1.
The specific embodiment
Referring to accompanying drawing, the utility model is a kind of to be used for the jaw pin retention mechanisms of automobile welding, comprises bearing 1 and is fixed on alignment pin 2 on this bearing, and the bottom of bearing 1 is provided with support column 3, can adjust the height of support column 3 as required.
Alignment pin 2 has perforation gathering sill 18 radially, is provided with jaw 4, and jaw 4 comprises:
Fork 6;
Be fixed on the location hook 5 of an end of fork 6, location hook 5 is arranged in gathering sill 18;
Connecting rod 7, an end of connecting rod 7 is hinged with an end that has location hook 5 of fork 6 by first rotating shaft 8, and the other end of connecting rod 7 is hinged with bearing 1 by second rotating shaft 9;
Cylinder 11, its cylinder barrel and bearing 1 are fixing, and piston rod 10 is hinged with the end away from location hook 5 of fork 6, and piston rod 10 is parallel to the axial arranged of alignment pin 2.
Cylinder 11 drives forks 10, and fork 10 can drive location hook 5 along the moving radially of alignment pin 2, and can compress the automobile component that needs the location when location hook 5 stretches out gathering sill 18, and during location hook 5 retraction gathering sills 18, automobile component can break away from from alignment pin 2.In order to realize that location hook 5 can also adopt other type of drive along alignment pin 2 moving radially.
Bearing 1 top has a shape carriage, this shape carriage is made of horizontal top board 12 and two risers 16 that are connected top board 12 both sides, wherein have pin-and-hole 13 on the top board 12, the top of alignment pin 2 passes this pin-and-hole 13, the sidewall of top board 1 has the locking screw 17 that is communicated with pin-and-hole 13 inwalls, can locking positioning pin 2 by clamping screw.
Top board 13 has installation gap 14 with the gathering sill 18 corresponding positions of alignment pin 2, and when location hook 5 was installed, location hook 5 entered into the gathering sill 18 of alignment pin 2 by this installation gap 14.
The two ends that are provided with circular hole 15, the first rotating shafts 8 of two riser 16 correspondences are positioned at corresponding circular hole 15, and circular hole 15 cooperates with the gap between two ends of first rotating shaft 8, to adapt to moving of location hook 5.
Automobile component correspondence that earlier will be to be fixed when the jaw pin retention mechanisms that the utility model is used for automobile welding is used be placed in the alignment pin place, driving cylinder makes location hook stretch out gathering sill, automobile component is compressed, carry out subsequent operation again, after operation is finished, drive location hook indentation gathering sill, automobile component is removed, promptly break away from alignment pin.