CN2468624Y - Punching die and safety guard apparatus - Google Patents

Abstract

The utility model discloses a punching die and human safety protecting device which is arranged on public die carriers and dies. A base which is fixed with a lower punching die 7 is connected with an upper template 2 which is fixed with an upper punching die 6 through an oil tank 4; a screw 10 is arranged at the side surface of the template 2; a conveying rod 11 is arranged on the die, a striking wedge 12 and a micro switch 13 are arranged on the base 5; the screw 10, the conveying rod 11 and the wedge 12 have the same axes. The micro switch 13 is positioned at the inclined side of the striking wedge 12. When the gap between the upper and lower dies of the die is bigger than the adjusting gap, the wedge can not touch the switch 13, then the punch is still locked tightly and the punch head does not fall off so as to protect the die and the human safety.

Description

Punch die and personal safety protector

The utility model relates to the secure ram protective device, particularly can protect the safety guard of punch die and personal safety simultaneously.

Punch die is the special tooling of punch process.Along with the kind of punching parts increases and quality requirement improves constantly, the use amount of compound die and fine blanking die increases day by day, and this type of mould not only involves great expense, and makes Sheet Metal Forming Technology further complicated.

In the punch process process,, forbid residual stamping parts and stampings in punch die in order to ensure the quality of stamping parts and protection mould.If part in the mould or waste material fail in time to get rid of, again by punching press again, gently then damage mould, heavy then personal equipment breakdown will take place, thus bring unnecessary economic loss.The conventional means of getting rid of stamping parts and waste material is: manipulator, airduct blow and manually take out.But when fault such as occurring getting stuck in the mould, manipulator and airduct are also powerless to this; When adopting artificial the taking-up, operating personnel's tired or careless and inadvertent situation takes place again often.So punch die protection and personal device security problem more and more are subjected to people's attention.

In order to protect operating personnel's personal safety, safety guard all is installed on the punch press of domestic and international current manufacturing, though in many styles, totally can be generalized into three classes: 1. two touch switch; 2. block the formula optoelectronic switch; 3. safety door (be this door be not related to, patrix can not be descending).Though these safety devices can be protected personal safety effectively, they still lack the direct protective action to mould, simultaneously productivity ratio are also brought certain negatively influencing.Especially to the standard machinery punch press, can cause productivity ratio to descend significantly.

The purpose of this utility model provides a kind of; when the gap between the upper and lower mould of punch die does not reach sheet thickness or malcompression plate; just the actual gap between upper and lower mould is greater than through adjusted when giving fixed gap; the bump wedge can't touch microswitch; microswitch is not opened; then punch press still is in the state of being locked, and the drift of punch press can not fall, and reaches protection punch die and personal safety protection device with this.

For achieving the above object, feature of the present utility model is that the base 5 that is fixed with punch die counterdie 7 links by oil cylinder 4 and the cope match-plate pattern 2 that is fixed with punch die patrix 6; Lock-screw 8, adjusting nut 9 and screw rod 10 are installed in the side of cope match-plate pattern 2, transmitting bar 11 is vertically mounted on patrix 6 and the counterdie 7, bump wedge 12, microswitch 13 and indicator lamp 14 are installed in the side of base 5, and microswitch 13 is positioned at the inclined-plane side of bump wedge 12; Screw rod 10, transmission bar 11 and bump wedge 12 are on the same axis.

Below in conjunction with accompanying drawing the utility model is specified:

Fig. 1: punch die and personal safety protector structural representation;

The A portion cutaway view Amplified image of Fig. 2: Fig. 1.

As shown in Figure 1, the utility model is fixed on public mould bases and the punching die.Public mould bases according to the punch press design is made up of force-bearing piece 1, cope match-plate pattern 2, guide pillar guide pin bushing 3 and base (or claiming lower bolster) 5.Guide pillar guide pin bushing 3 is separately fixed on base 5 and the cope match-plate pattern 2, and by the slip of guide pin bushing on guide pillar, cope match-plate pattern 2 base 5 relatively moves up and down.Adopt the oil cylinder 4 of two energy synchronous operations that cope match-plate pattern 2 and base 5 are associated in together, an end of oil cylinder 4 is fixed on the base 5, and the piston rod that stretches out from the other end then links with cope match-plate pattern 2.Patrix 6 and the counterdie 7 of producing the punch die of stamping parts are separately fixed on cope match-plate pattern 2 and the base 5, and the upper and lower mould 6,7 of punch die is in normal ON state.Lock-screw 8, adjustment nut 9 and screw rod 10 are installed in the side of cope match-plate pattern 2; Transmitting 11 on bar is vertically mounted on patrix 6 and the counterdie 7; Bump wedge 12, microswitch 13 and indicator lamp 14 are installed in the side of base 5; As shown in Figure 2, microswitch 13 is in the inclined-plane side of bump wedge 12.Microswitch 13 is controlled the clutch of indicator lamp 14 and punch control circuit simultaneously.Screw rod 10, transmission bar 11 and bump wedge 12 are on the same axis.Nut 9 is adjusted in rotation, and screw rod 10 can move up and down.Exert pressure in the upper end of transmitting bar 11 or bump wedge 12, they can move down, and then automatically reset after the unloading.

The gap adjustment process that the upper and lower mould of punch die is 6,7 is: the control circuit that disconnects punch press earlier; Start oil hydraulic system to the piston upper end of oil cylinder 4 fuel feeding, cope match-plate pattern 2 is descending, compresses plate until the patrix 6 that makes punch die; Nut 9 is adjusted in rotation again, and screw rod 10 slowly moves downward, and transmits bar 11 and bump wedge 12 by depressing, and microswitch 13 can be opened reliably, and the red light of indicator lamp 14 extinguishes; With lock-screw 8 screw rod 10 is locked again; Be to connect punch control circuit at last.

In the punching course, start the control system of oil cylinder 4 earlier, oil-feed lower end, the upper end emptying of oil cylinder 4, piston moves down, make the patrix 6 of punch die descending, clash into wedge 12 simultaneously and touch microswitch 13, then the clutch closure of punch control circuit until compressing plate, the drift of punch press falls, and reaches the purpose of punching press.If the gap between the upper and lower mould does not reach sheet thickness or malcompression plate, the bump wedge can't touch microswitch, and switch is not opened, and then punch press still is in the state of being locked, and drift can not fall.Punching press finishes, and the drift of punch press resets, the clutch automatic disconnection.Opens solenoid valve again allows the upper end emptying lower end oil-feed of oil cylinder 4, and utilizes the resetting-mechanism in the mould that patrix 6 is lifted, and next step is stamping parts and the stampings of removing in the mould.If still residual part or waste material in the mould; or the people appears for maloperation; even start the control system of oil cylinder 4 once more; because of occurring " bedding and padding " phenomenon in the mould; that is: the gap is greater than adjusting post gap between the upper and lower mould, and the bump wedge also can't touch microswitch, and microswitch 13 can't be opened; punch press still is in locking state, thereby plays the effect of protection punch die and personal safety.

The utility model is simple in structure, is active in one's movements, and is reliable, highly versatile, and a punch press only need be equipped with one pair of this device, is particularly useful for the punching automation process.For smart impact machine bed, can directly use the oil hydraulic system oil supply oil supply cylinder of this lathe.And standard machinery formula punch press then should be set up a cover small-sized hydraulic system, but can accomplish that a station is for multimachine.And for the standard machinery punch press, on business the cope match-plate pattern with mould bases is not connected with slider of punch, relies on the precision of mould bases upper guide post guide pin bushing, and it is smart in part just can to produce " standard ".

Claims (1)

1, a kind of punch die and personal safety protector that is fixed on public mould bases and the punch die, the base (5) that it is characterized in that being fixed with punch die counterdie (7) links by oil cylinder (4) and the cope match-plate pattern (2) that is fixed with punch die patrix (6); Lock-screw (8), adjustment nut (9) and screw rod (10) are installed in the side of cope match-plate pattern (2): transmit bar

(11) be vertically mounted on the patrix (6) and counterdie (7) of punch die; Bump wedge (12), microswitch (13) and indicator lamp (14) are installed in the side of base (5); Microswitch (13) is positioned at the inclined-plane side of bump wedge (12), and screw rod (10), transmission bar (11) and bump wedge (12) are on the same axis.

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