CN201028256Y

CN201028256Y - Hand-press proof device of stamper

Info

Publication number: CN201028256Y
Application number: CNU2007201412521U
Authority: CN
Inventors: 肖高富
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-30
Filing date: 2007-03-30
Publication date: 2008-02-27
Anticipated expiration: 2017-03-30

Abstract

The utility model relates to an electric safety device, in particular to a hand crush preventing device for punch. The safety device comprises a principal shaft rod which can drive an upper punching head to move up and down and a lower die holder for storing workpieces, wherein, the principal shaft rod is divided into an upper principal shaft and a lower principal shaft. The lower principal shaft is inserted in the upper principal shaft, and an insulated shaft sleeve is arranged between the upper and lower principal shafts. The upper end of the lower principal shaft is connected with the upper principal shaft through a contact nut. A spring is arranged between the shaft shoulder at the upper part of the lower principal shaft and the upper head surface of the insulated shaft sleeve. The upper principal shaft is connected with the lower die holder by lead. Through a repeater ZJ, the upper punching head is connected with an electromagnetic valve which controls motion of the principal shaft. The lower die holder is connected with the cathode of the power source. The utility model having the advantages of novel design, simple and reliable operation in addition to strong practicality can further improve the working efficiency of the punch under the condition of safe operation.

Description

The anti-arm device of pressing of stamping press

Technical field

The utility model relates to a kind of electric safety device, is specially the anti-arm device of pressing of a kind of stamping press.

Background technique

Be in the punching equipment of power with air pressure, hydraulic pressure, basic without any protective system to the person.For a long time, the safety protection of the person is a troubling difficult problem, the most frequently takes place with the accident that breaks finger especially, and consequent industrial accident is continuous, and workman's psychology and physiology is all had an immense impact on, and influence all the life even.For this reason, numerous producers are all in the method for attempting solving, and as using infrared controller, machinery is dialled methods such as hand.But these methods all are very limited in actual use, and reason mainly is to have influenced working efficiency.As infrared controller, when needs helped stamped workpieces with Handball Association, because of infrared inductor induction existence in one's hands, machine just can't proper functioning; As a same reason, machinery is dialled hand and also can't be allowed the hand Attended Operation.As efficient is exactly today of enterprise's life, can not get certainly applying.Because existing anti-pressure arm device is also impracticable, so, in the industrial production of reality, really do not play a role.

Summary of the invention

The purpose of this utility model is the safety problem at existing punching equipment, provides a kind of application convenient, safe and reliable, does not influence working efficiency, and the low anti-arm device of pressing of stamping press of cost.

The technical solution of the utility model is as follows: the anti-arm device of pressing of a kind of stamping press, comprise the spindle rod of the upper and lower motion of drive upper punch and the die set of place work piece, wherein, spindle rod is divided into main shaft and lower main axis two-part, lower main axis inserts goes up main shaft inside, be provided with insulating sleeve between last main shaft and the lower main axis, the lower main axis upper end is connected with last main shaft by the contact nut, is provided with spring between the lower main axis top shaft shoulder and insulating sleeve upper-end surface; Connect with lead between last main shaft and the die set, upper punch connects the solenoid valve that is used to control motion of main shaft by repeater ZJ, and die set is connected with power cathode.

The anti-arm device of pressing of aforesaid stamping press, wherein, repeater ZJ also is connected with a foot switch by the normally-closed contact of time relay sj, and foot switch connects positive source.

The utility model is installed on the stamping press, when proper functioning, by motivational drive, upper punch moves up and down, as the workpiece that touches is conductor (metalworks such as iron, copper, aluminium), and then repeater ZJ is failure to actuate, be kept closed, press work normally carries out, and workpiece is carried out punching press; When upper punch moved downward that contact is in one's hands to wait poor conductor, circuit disconnected, the ZJ action, and the output control signal makes machine out of service, thereby the person such as hand is protected.

Description of drawings

Fig. 1 is the structural representation of the utility model spindle rod.

Fig. 2 is a connecting structure for electrical equipment schematic representation of the present utility model.

Among the figure, 1. go up main shaft 2. contact nuts 3. springs 4. insulating sleeves 5. steel ball sleeves 6. lower main axis 7. upper punchs 8. workpiece 9. die sets 10. solenoid valves 11. repeaters 12. time relays 13. foot switchs

Embodiment

As figure, shown in Figure 2, the anti-pressure of stamping press arm device comprises the spindle rod of drive upper punch 7 upper and lower motions and the die set 9 of place work piece 8, spindle rod is divided into main shaft 1 and lower main axis 6 two-part, lower main axis 6 inserts goes up main shaft 1 inside, be provided with insulating sleeve 4 between last main shaft 1 and the lower main axis 6, lower main axis 6 upper ends are connected with last main shaft 1 by contact nut 2, are provided with spring 3 between the lower main axis 6 top shaft shoulders and insulating sleeve 4 upper-end surfaces; Connect with lead between last main shaft 1 and the die set 9, upper punch 7 connects the solenoid valve 10 that is used to control motion of main shaft by repeater ZJ11, and die set 9 is connected with power cathode.Repeater ZJ11 also is connected with a foot switch 13 by the normally-closed contact of time relay sj 12, and foot switch 13 connects positive source.

Working principle of the present utility model is as follows:

When stepping on foot switch, power supply constitutes the loop from coil → upper punch → spindle rod → die set → power cathode of the long closed contact → repeater ZJ of positive source → foot switch → time relay sj, this moment, the solenoid valve adhesive moved downward the gas-powered main shaft.

When upper punch touched workpiece, pressure spring backed down the contact nut, disconnected being electrically connected between upper punch and the spindle rod.

As workpiece is conductor (as: metalworks such as iron, copper, aluminium), then power supply is from coil → upper punch → workpiece → die set → power cathode of positive source → foot switch → time relay sj normally-closed contact → repeater ZJ, the loop keeps on state, and press work normally carries out.

If workpiece is nonconductor (as: finger, a nonconductor etc.); then the loop disconnects from this link of workpiece; repeater ZJ does not have electric current to pass through; thereby cause the relay switch can not be closed; therefore solenoid valve does not have the power supply supply; be in non-control state, form gas promotion main shaft thus and return, thereby play protection related personnel's the safe effect of the person (hand).

The utility model structural design novelty, simple and reliable, can have very strong practicability in the working efficiency that guarantees further to improve under the prerequisite of safety operation punching equipment.

Claims

1. a stamping press prevents pressing arm device, comprise the spindle rod of the upper and lower motion of drive upper punch (7) and the die set (9) of place work piece (8), it is characterized in that: spindle rod is divided into main shaft (1) and lower main axis (6) two-part, main shaft (1) inside in lower main axis (6) insertion, be provided with insulating sleeve (4) between last main shaft (1) and the lower main axis (6), lower main axis (6) upper end is connected with last main shaft (1) by contact nut (2), is provided with spring (3) between lower main axis (6) the top shaft shoulder and insulating sleeve (4) upper-end surface; Connect with lead between last main shaft (1) and the die set (9), upper punch (7) connects the solenoid valve (10) that is used to control motion of main shaft by repeater ZJ (11), and die set (9) is connected with power cathode.

2. the anti-arm device of pressing of stamping press as claimed in claim 1, it is characterized in that: repeater ZJ (11) also is connected with a foot switch (13) by the normally-closed contact of time relay sj (12), and foot switch (13) connects positive source.