CN2096429U

CN2096429U - Punch press prepressing type demould apparatus

Info

Publication number: CN2096429U
Application number: CN 91216690
Authority: CN
Inventors: 纪金标
Original assignee: Chin Fong Machine Industrial Co Ltd
Current assignee: Chin Fong Machine Industrial Co Ltd
Priority date: 1991-06-26
Filing date: 1991-06-26
Publication date: 1992-02-19

Abstract

The utility model relates to a punch press prepressing type demould apparatus, particularly the combination between the punch press demould material discharging pin part and a thrust force generating element. The thrust force generating element is arranged at the bottom position in a punch press slider. The thrust force generating element is composed of a spring, a steam pressure apparatus, an oil pressure apparatus or a nitrogen gas spring. The material discharging pin has a prepressing thrust force. Before the slider rushes to the bottom dead point, the material discharging pin presses a work element first, and then, is punched and shaped. After the material discharging pin is punched and shaped, the slider moves upwards through the bottom dead point, and then presses downwards the work element through the material discharging pin. When the slider ascends to the upper dead point, the work element leaves off an upper mold and is positioned at a lower mold. The apparatus can prevent the work element from being damaged due to discretional falling after the work element is processed, and can be conveniently matched with automated punching operation.

Description

Punch press prepressing type demould apparatus

The utility model relates to a kind of punch press prepressing type stripper apparatus, mainly establishing one in the slider of punch inner bottom part can make and take off the material pin and have the thrust producing component of replying thrust, make the punch process material do precompressed location and the effect of fixed point liftout, can prevent that workpiece from damaging, and provides automation to work continuously.

Existing general punch press liftout structure, mostly as shown in Figure 4, punch press lathe bed 1 is provided with a counterdie 11, counterdie 11 tops are placed one and are added labor and materials 12, and corresponding to counterdie 11 with add labor and materials 12 tops, then establish and be arranged at patrix 13 with a bottom and can do the slide block 2 of suppressing action, on slide block 2, establish a demoulding Lifting Device, this Lifting Device sells 14 by the material that takes off that is through to patrix 13 bottoms from slide block 2 centers, one is located at the liftout cross bar 15 that takes off material 14 tops and is located at the pin 17 that lathe bed 1 both sides are fixed with holder 16,18 constitute, pin 17 can be corresponding to liftout cross bar 15 end positions, under the state that the slide block 2 of Fig. 4 A does not press down, because slide block 2 rises in upper dead center position, and liftout cross bar 15 promptly is subjected to lathe bed 1 both

sides pin

17,18 block effect and moving down makes and takes off material pin 14 and be the state of ejecting; When moving down, slide block 2 does punching press when action, liftout cross bar 15 no longer is subjected to

17,18 block effect, make to take off and expect that pin 14 is free movement state, as Fig. 4 B when slide block 2 moves to lower dead point position, owing to the extruding that is subject to processing material 12 is the retraction state, for another example shown in Fig. 4 C, after slide block rises, the labor and materials 12 that add of drawing rise together with patrix 13 because of suction-operated, when slide block 2 risings return back to upper dead center position, shown in Fig. 4 D, the pin 17 of lathe bed 1 both sides, 18 press down liftout cross bar 15, thus by take off material pin 14 eject downwards and make add labor and materials 12 by under push up and come off.Above-mentioned basic punching press action and the demoulding step that is existing punch press, there is following shortcoming in above-mentioned punch press:

1. after the demoulding, adding labor and materials can't locate: be mainly during owing to the demoulding and take off the downward pushing method of material pin, this adds labor and materials and is the freely falling body mode and falls, not only cause shown in Fig. 4 D, order adds labor and materials 12 and falls and collide counterdie 11 and cause and add the labor and materials surface fracture, influence crudy,, may fall and jeopardize handling safety because of adding the irregular mode of labor and materials more in view of under the condition of no any security protection.

2. can't do automation processes continuously: eject and be the demoulding of freely falling body mode owing to add labor and materials, promptly can't guarantee to add the unanimity in orientation, labor and materials whereabouts, be not easy to follow-up the taking-up with manipulator, sucker or material folding device and cooperate with other automation procedures.

Main purpose of the present utility model is: provide a kind of and control stripper apparatus safe in utilization for punch press, can effectively reduce and add labor and materials damage phenomenon, make stamping quality comparatively good, and can be positioned on the counterdie adding labor and materials after the punching press, follow-up automation processing operation can conveniently be provided, improve the practicality of punch press.

The utility model is to realize like this, being provided with one can make and take off the material pin and have and press down flexible thrust producing component in slider of punch inside, connecting a material that takes off that runs through the slide block base plate in thrust producing component bottom sells, make to take off and expect to sell to have to push back multiple active force, and this thrust producing component is one to be positioned at the space of slide block inner bottom part position, can form spring housing in this space, be provided with a spring in the spring housing, the spring bottom abuts against a piston, piston then with take off material pin and be connected, can make by the elastic thrust of spring to take off and expect that pin presses down, so that add the labor and materials demoulding on the former stamping position of counterdie.

Compared with prior art, the utility model can improve the yield rate of stamping parts, helps cooperating automation mechanized operation and guarantees handling safety.

For further specifying architectural feature of the present utility model and practical purpose, elaborate below in conjunction with accompanying drawing:

Fig. 1: slide block cross-sectional view of the present utility model.

Fig. 2: punching press action schematic diagram of the present utility model.

Fig. 3: thrust producing component embodiment generalized section of the present utility model.

Fig. 4: existing punch press action schematic diagram.

Fig. 1 utilizes the embodiment of spring as the thrust producing component for the utility model.The utility model is mainly established with a thrust producing component 30 in the inboard of slide block 3 base plates 36, thrust producing component 30 is connected piston 33 by the piston 33 that is positioned at spring 31 bottoms by a spring housing 32, the spring 31, that is positioned at spring housing 32 and is made up of the material pin 34 that takes off that the passage 35 of base plate 36 protrudes out with one, by the elastic recovery effect that this spring 31 is had, make and take off material pin 34 and have and push back multiple thrust.

Actual when being used on the punch press, shown in Fig. 2 A, when slide block 3 during in top dead-centre, take off and expect that pin 34 is subjected to the suppressing action power of slide block 3 contained springs 31, and be the state that ejects that is exposed to patrix 13 bottoms, when slide block 3 presses down gradually, earlier take off the suppressing action power of material pin 34 and make processed material 12 do the precompressed location, have to make earlier before the punching press and add the suitably characteristic of location of labor and materials by this; Shown in Fig. 2 B, when slide block 3 presses to lower dead point position, counterdie 11 is corresponding to the active force of the power of taking off material pin 34 greater than spring 31, take off material pin 34 retraction patrixes 13 inside so make, when slide block 3 begins to rise, because going up the power of pressure-off material pin 34 this moment disappears, taking off material pin 34 under the elasticity recovery effect of spring 31 ejects once more, and the labor and materials 12 that add after the punching press are positioned on the counterdie 11 by compression set, directly make to add the labor and materials demoulding, rise to after top dead center, under the effect of taking off material pin 34 in slide block 3, adding labor and materials 12 after the processing positively is positioned to be beneficial to automated machine and to do subsequent job on the counterdie 11.

The utility model more can use oil pressure, air pressure or nitrogen to constitute the thrust source, and Fig. 3 is the utility model thrust producing component, the schematic diagram that is made of oil pressure, air pressure or nitrogen spring mode.Form an air cylinder 42 in slide block 4 inner bottom parts, one connects the piston 43 that takes off material pin 44, one for taking off the passage 51 that material pin 44 runs through from base plate 41, top in this air cylinder 42 is provided with a gas, oil turnover port 50, and port 50 can be connected in extraneous single loop gas, oil pressure or the nitrogen supply (NS) mechanism by pipeline; On piston 43, establish a seal ring 45, sealing effectiveness is provided; In gas, oil or nitrogen enter air cylinder 42, promote piston 43 downwards and make and take off material pin 44 and be the state of ejecting, and this piston is positioned at piston 43 bottom airs and is then discharged by the passage 51 of base plate 41 when pushing away for 43 times.When the downward punching press of slide block 4, after taking off material pin 44 processed material and withstanding, piston 43 promptly produces a displacement that makes progress corresponding to air cylinder 42, and this moment, gas, oil or the nitrogen of this air cylinder 42 were then flowed out in the organization of supply by port 50; After punching press finished, slide block 4 rose, and piston 43 stressed minimizings are entered gas, oil or nitrogen pressure again by port 50, took off material pin 44 and ejected once more.In like manner, the thrust producing component also can be made of other equivalent thrust generation devices in the utility model.

Claims

1, a kind of punch press prepressing type stripper apparatus, it is characterized in that: establish in the slider of punch and adorn a thrust producing component, connecting a material that takes off that runs through the slide block base plate in thrust producing component bottom sells, and this thrust producing component is one to be positioned at the space of slide block inner bottom part position, can form spring housing in this space, establish in the spring housing with a spring, the spring bottom abuts against a piston, and piston then is connected with the described material pin that takes off.

2, punch press prepressing type stripper apparatus as claimed in claim 1 is characterized in that, slider bottom is provided with for taking off expects what pin ran through, the hole that outside air is passed through.

3, punch press prepressing type stripper apparatus as claimed in claim 1 is characterized in that, the thrust producing component can be made of oil pressure, air pressure or nitrogen spring.