Polish structure in material strip local
The utility model relates to punching parts and to polish technical field, and especially polish structure in a Seed packaged band local.
When material strip doing stretch forming, not rupturing in drawing process to make material strip to refuel increases punch-die and material strip lubricity and makes it more easily be shaped, and extend the punch-die life-span, meeting apply oil lubrication on material strip usually simultaneously.Prior art usually fills an oil dripping device and carries out oil dripping in mould or on feeder, this oil dripping mode can make that band material all has oil.But also can produce many adverse consequences thus: piece surface oil may be made to inhale too much and cannot take off on stripper; Or the push rod in mould makes part deformation when discharging because oil forms very large suction too much thus causes part rejection.
Utility model content
The applicant, for the shortcoming in above-mentioned existing production technology, provides a kind of material strip rational in infrastructure local to polish structure, thus ensures at the appropriate lubricating oil of suitable local obliterating, not only easy-unloading, and the generation that can reduce waste product.
The technical scheme that the utility model adopts is as follows:
Polish structure in one Seed packaged band local, comprise upper bolster, below described upper bolster, install backing plate, below described upper padding plate, punch retainer is installed, the punch of described punch retainer connects stripper by securing member and spring, and multiple block of polishing is installed in described stripper lower end; Also comprise die shoe, install concave template above described die shoe, material strip is laid in described concave template upper end, described in block of polishing dock with material strip; Described upper padding plate is connected with push rod, and described push rod is successively through punch retainer, stripper, and described push rod bottom surface is docked with material strip.
Further improvement as technique scheme:
Described block of polishing adopts wool felt to make.
Interval, both sides, described concave template upper end is provided with the locating piece of clamping material strip.
The beneficial effects of the utility model are as follows:
The utility model is when patrix moves downward, and block of polishing contacts with material strip, makes local on material strip smear appropriate oil, material strip would not form much unnecessary oil.Easy-unloading, greatly reduces percent defective; On stripper, correct position can be installed by block of polishing as required, the quantity of block of polishing and reconfigurable joint, convenient and practical, be easy to promote, boost productivity.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein: 1, upper bolster; 2, upper padding plate; 3, punch retainer; 4, spring; 5, stripper; 6, to polish block; 7, material strip; 8, concave template; 9, die shoe; 10, push rod; 11, locating piece.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described.
As shown in Figure 1, polishing structure in the material strip of the present embodiment local, comprises upper bolster 1, backing plate 2 is installed below upper bolster 1, install punch retainer 3 below upper padding plate 2, the punch of punch retainer 3 connects stripper 5 by securing member and spring 4, and multiple block 6 of polishing is installed in stripper 5 lower end; Also comprise die shoe 9, install concave template 8 above die shoe 9, material strip 7 is laid in concave template 8 upper end, and block 6 of polishing docks with material strip 7; Upper padding plate 2 is connected with push rod 10, push rod 10 is successively through punch retainer 3, stripper 5, and push rod 10 bottom surface is docked with material strip 7.
Preferably, block 6 of polishing adopts wool felt to make, and directly screw on stripper 5 by bolt, wool felt absorbability is good, and obliterating is convenient.
In order to fix correcting material strip 7 further, interval, both sides, concave template 8 upper end is provided with the locating piece 11 of clamping material strip 7.
Utility model works process is as follows:
First, material strip 7 is positioned on concave template 8, as required the block 6 of polishing of suitable shape size is arranged on stripper 5 correct position; Then, upper bolster 1 moves downward, and drives upper padding plate 2, punch retainer 3, stripper 5 to wipe descending, block 6 of polishing on stripper 5 contacts with material strip 7 and docks, make material strip 7 local smear oil, upper bolster 1 continues to press down, and material strip 7 is through punch and die mating reaction punch forming; Finally, upper bolster 1 lifts, and under the elastic force effect of spring 4, push rod 10 promotes the material strip after punching press 7 and carries out discharging.
The utility model can adjust polish block 6 size, shape and present position as required, matched moulds is utilized to move, the local of material strip 7 is made to smear appropriate oil, material strip 7 would not form much unnecessary oil, push rod 10 can not be adsorbed on material strip because oil, easy-unloading, also greatly reduces percent defective simultaneously; Cost is low, and productivity ratio is high, convenient and practical, is easy to promote.
More than describing is to explanation of the present utility model, and be not the restriction to utility model, the utility model limited range, see claim, within protection domain of the present utility model, can do any type of amendment.