CN203018643U

CN203018643U - Automatic protection control circuit

Info

Publication number: CN203018643U
Application number: CN 201220685297
Authority: CN
Inventors: 李克顺
Original assignee: Anhui Hongqiao Metal Manufacturing Co Ltd
Current assignee: Anhui Hongqiao Metal Manufacturing Co Ltd
Priority date: 2012-12-12
Filing date: 2012-12-12
Publication date: 2013-06-26
Anticipated expiration: 2022-12-12

Abstract

The utility model discloses an automatic protection control circuit which comprises a transformer and a contactor. A primary coil of the transformer is access to a 380V power supply and is connected with an electromagnetic clutch through a movable contact of the contactor, a first secondary coil of the transformer is sequentially connected with a total parallel connection branch through an overload protector and a stop button, a serial connection branch in the total parallel connection branch is formed by a duplex start button and the contactor which are sequentially in serial connection, a sub parallel connection branch is formed by an alarm indicator lamp and a second middle relay which are in parallel connector, a normally-closed contact of the contactor is in parallel connection with the duplex starting button, a normally-closed contact of the second middle relay is in serial connection with the serial connection branch, one end of a second secondary coil of the transformer is connected with the ground, and the other end of the second secondary coil of the transformer is sequentially in serial connected with the overload protector, a first middle relay and a contact electrode to be connected with the ground. The automatic protection control circuit can timely enable equipment to be shut down when feed is abnormal in a full-automatic punching process of a punch and can effectively protect safety of moulds, equipment and person.

Description

A kind of automatic protection control circuit

Technical field

The utility model relates to the old-fashioned punch press of JC series that self does not have misdelivery to detect control, is specially a kind of automatic protection control circuit.

Background technology

At present, J, JC series punching apparatus is due to its low price, and simple, the low-cost characteristic of Operation and Maintenance is used in a large number in a lot of punching press enterprise, and this equipment simultaneously because of simple in structure, is also the multiple equipment of punching press enterprise-quality security incident.As shown in Figure 1, it is to pull the mechanical clutch of punch press to control slider of punch punching press and shut-down operation by an electromagnet, in case punch die generating material misdelivery in continuous punching work can not in time stop punching press, very easily causes product and mould to scrap, and even causes personal injury.

The utility model content

The purpose of this utility model is to provide a kind of automatic protection control circuit; to solve mould traditional in prior art in the continuous punching process; cause product and mould loss from spoilage because the material misdelivery can not in time stop punching press, even cause the problem of personal injury.

For achieving the above object, the technical solution adopted in the utility model is:

a kind of automatic protection control circuit, it is characterized in that: include transformer and contactor, the primary coil of described transformer is through overload protective device access 380V power supply, and be connected with electromagnetic clutch through the movable contact of contactor, the first secondary coil of described transformer passes through overload protective device successively, stop button is connected with total parallel branch, described total parallel branch is in parallel by series arm and a minute parallel branch and consists of, described series arm is followed in series to form by duplex start button and contactor, parallel branch was made of alarm lamp and the second auxiliary reclay parallel connection in described minute, the normally-closed contact of described contactor is in parallel with the duplex start button, the normally-closed contact of described the second auxiliary reclay is connected on series arm, the second subprime coil one end ground connection of described transformer, the other end overload protective device of connecting successively, the first auxiliary reclay, ground connection after contact electrode.

The beneficial effects of the utility model are:

The utility model feeding in the full-automatic punching course of punch press occurs when abnormal, the signal of material misdelivery can automatically be detected and timely stopping of solenoidoperated cluthes electromagnet in time shut down equipment, has effectively protected the safety of mould, equipment and the person.

Description of drawings

Fig. 1 is punch control circuit schematic diagram traditional in prior art.

Fig. 2 is circuit diagram of the present utility model.

The specific embodiment

as shown in Figure 2, a kind of automatic protection control circuit, include transformer and contactor 5, the primary coil of transformer is through overload protective device 1 access 380V power supply, and be connected with electromagnetic clutch 6 through the movable contact of contactor 5, the first secondary coil of transformer passes through overload protective device 1 successively, stop button 2 is connected with total parallel branch, total parallel branch is in parallel by series arm and a minute parallel branch and consists of, series arm is by duplex start button 3, 4 and contactor 5 be followed in series to form, minute parallel branch is made of alarm lamp L and the second auxiliary reclay 9 parallel connections, the normally-closed contact of contactor 5 and duplex start button 3, 4 parallel connections, the normally-closed contact of the second auxiliary reclay 9 is connected on series arm, the second subprime coil one end ground connection of transformer, the other end overload protective device 1 of connecting successively, the first auxiliary reclay 8, the rear ground connection of contact electrode 7.

Punch press is in the continuous punching process; generating material misdelivery because of various reasons; contact electrode 7 connections this moment; the first auxiliary reclay 8, the second auxiliary reclay 9, contactor 5 are in succession switched on and are made electromagnetic clutch control the electromagnet outage; continuous punching stops rapidly; thereby effectively protect mould not damaged, avoid stamping products to scrap continuously.

Claims

1. automatically protect control circuit for one kind, it is characterized in that: include transformer and contactor, the primary coil of described transformer is through overload protective device access 380V power supply, and be connected with electromagnetic clutch through the movable contact of contactor, the first secondary coil of described transformer passes through overload protective device successively, stop button is connected with total parallel branch, described total parallel branch is in parallel by series arm and a minute parallel branch and consists of, described series arm is followed in series to form by duplex start button and contactor, parallel branch was made of alarm lamp and the second auxiliary reclay parallel connection in described minute, the normally-closed contact of described contactor is in parallel with the duplex start button, the normally-closed contact of described the second auxiliary reclay is connected on series arm, the second subprime coil one end ground connection of described transformer, the other end overload protective device of connecting successively, the first auxiliary reclay, ground connection after contact electrode.