CN201291575Y

CN201291575Y - Control system for bidirectional material suction device

Info

Publication number: CN201291575Y
Application number: CNU2008201619201U
Authority: CN
Inventors: 王浩东; 何晓丹
Original assignee: Nanjing Panda Electronics Co Ltd; Nanjing Huage Electronics and Automobile Plastic Industry Co Ltd
Current assignee: Nanjing Panda Electronics Co Ltd; Nanjing Huage Electronics and Automobile Plastic Industry Co Ltd
Priority date: 2008-10-15
Filing date: 2008-10-15
Publication date: 2009-08-19
Anticipated expiration: 2018-10-15

Abstract

The utility model provides a control system of a two-way material absorption device, comprising a main circuit and a control circuit; in a main circuit, a three-phase air switch QS1, a normally open contact of an AC contactor KM and a thermal relay FR1 are sequentially spanned among the three live wires L1, L2 and L3, and the output of the thermal relay FR1 is connected with the input of an electric motor M; the input end of a fuse FU1 in the control circuit is connected with the input end of the three-phase air switch QS1, and a multiple circuit is arranged between the output end of the fuse FU1 and a zero wire N; the multiple circuit is composed of a plurality of branch circuits, in the branch circuit 2, a two-way time-delay devices T1, the input end of the T1 and the output end of the air switch QS1 are connected, and the output end of T1 is connected with the zero wire N. the control system of the two-way material absorption device can automatically alarm when the material absorption device does not have material or can not absorb the material.

Description

Control system for bidirectional material suction device

Technical field

The utility model relates to a kind of material suction device system, and specifically, the utility model relates to a kind of control system for bidirectional material suction device.

Background technology

In process, many injection machines are in continuous operation, because mechanical, artificial or some other factor causes material suction device when the material supply is not smooth, fail in time to find, influence the injection machine continuous operation.In addition, when material suction device fails in time to supply enough materials, can not give the alarm, remind the underworker, deal with problems the energy loss and the device damage that cause material suction device to cause because of working long hours.

Summary of the invention

The utility model aims to provide a kind of material suction device when lacking material or inhaling not material loading, the control system for bidirectional material suction device that can report to the police automatically.

The utility model addresses the above problem by the following technical programs:

A kind of control system for bidirectional material suction device, comprise main circuit and control circuit, it is characterized in that, described main circuit comprises live wire L1, L2, L3, three-phase air switch QS1, A.C. contactor KM, electrothermal relay FR, motor M, described three-phase air switch QS1, the normally opened contact of A.C. contactor KM, electrothermal relay FR1 are connected across between three live wire L1, L2, the L3 successively, and the output of electrothermal relay FR1 connects the input of motor M;

Described control circuit comprises fuse FU1, A.C. contactor KM, the normally closed switch of electrothermal relay FR1, relay K M1, KM2, two-way time relay T1, limit switch SQ1, SQ2, K switch 1, K2, time relay KT2, KT3, commutation air valve Q1, alarming horn B1, zero line N;

Between the output of described fuse FU1 input termination three-phase air switch QS1, the output of fuse FU1 and zero line N a loop in parallel is arranged;

The branch road 1 of described shunt circuit by the normally opened contact parallel connection of relay K M1, KM2 after the normally-closed contact of serial connection A.C. contactor KM and electrothermal relay FR1, the input of described KM1, KM2 links to each other with the output of fuse FU1, and the normally-closed contact output of electrothermal relay FR1 links to each other with zero line N;

The branch road 2 of described shunt circuit comprises a two-way time relay T1, and the input of T1 links to each other with the output of three-phase air switch QS1, and the output of T1 links to each other with zero line N;

The branch road 3 of described shunt circuit comprises K switch 1, limit switch SQ1, time relay KT2, relay K M1, two-way time relay T1, often opening of the normally closed time-delay break contact of described KT2, relay K M1, T1 formed a little shunt circuit with time relay KT2 after timing closing contact three connects, K switch 1, limit switch SQ1 connect with this little shunt circuit, the input of K switch 1 links to each other with the output of fuse FU1, and the output of often opening timing closing contact, time relay KT2 of T1 links to each other with zero line N;

The branch road 4 of described shunt circuit comprises K switch 2, limit switch SQ2, time relay KT3, relay K M2, two-way time relay T1, after connecting, the normally closed time-delay break contact three of the normally closed time-delay break contact of described KT3, relay K M2, T1 forms another little shunt circuit with time relay KT3, K switch 2, limit switch SQ2 connect with this little shunt circuit, the input of K switch 2 links to each other with the output of fuse FU1, and the normally closed time-delay break contact of T1, the output of time relay KT3 link to each other with zero line N;

The branch road 5 of described shunt circuit is composed in series by relay K M2 and commutation air valve Q1, and the input of the normally opened contact of relay K M2 links to each other with the output of fuse FU1, and the output of commutation air valve Q1 links to each other with zero line N;

The branch road 6 of described shunt circuit is composed in series with alarming horn B1 after by time relay KT2, KT3 timing closing contact parallel connection, and the input of KT2, KT3 links to each other with the output of fuse FU1, and the output of alarming horn B1 links to each other with zero line N.

Technique effect of the present utility model is:

1, energy savings reduces the machine breakdown rate.

Even 2, the discovery that goes wrong improves the stability of injection machine material supply.

Description of drawings

Fig. 1 is realization circuit theory diagrams of the present utility model.

The specific embodiment

Bottom is further described the utility model with the specific embodiment in conjunction with the accompanying drawings:

As shown in Figure 1, a kind of control system for bidirectional material suction device, comprise main circuit and control circuit, described main circuit comprises live wire L1, L2, L3, three-phase air switch QS1, A.C. contactor KM, electrothermal relay FR, motor M, described three-phase air switch QS1, the normally opened contact of A.C. contactor KM, electrothermal relay FR1 is connected across three live wire L1 successively, L2, between the L3, three-phase air switch QS1 in circuit, is controlled the break-make of motor with power delivery by the normally opened contact of low-voltage device contactor KM, electrothermal relay FR1 shields to main circuit simultaneously, and the output of electrothermal relay FR1 connects the input of motor M;

The output of described fuse FU1 input termination three-phase air switch QS1 plays short-circuit protection, between the output of fuse FU1 and the zero line N loop in parallel is arranged;

The branch road 1 of described shunt circuit by the normally opened contact parallel connection of relay K M1, KM2 after the normally-closed contact of series connection A.C. contactor KM and electrothermal relay FR1, the normally opened contact of relay K M1, KM2 is controlled the operation of injection machine hopper and baking oven hopper respectively, the input of KM1, KM2 links to each other with the output of fuse FU1, and the normally-closed contact output of electrothermal relay FR1 links to each other with zero line N;

The branch road 3 of described shunt circuit comprises K switch 1, limit switch SQ1 (SQ1 is in closure state when the injection machine hopper lacks material), time relay KT2, relay K M1, two-way time relay T1, after connecting, the normally closed time-delay break contact of described KT2, the timing closing contact three of relay K M1, T1 form little shunt circuit with time relay KT2, K switch 1, limit switch SQ1 connect with this little shunt circuit, the running of control injection machine hopper, the input of K switch 1 links to each other with the output of fuse FU1, and the output of little shunt circuit links to each other with zero line N;

The branch road 4 of described shunt circuit comprises K switch 2, limit switch SQ2 (SQ2 is in closure state when roars of laughter hopper hopper lacks material), time relay KT3, relay K M2, two-way time relay T1, after connecting, the normally closed time-delay break contact of described KT3, the time-delay break contact three of relay K M2, T1 form little shunt circuit with time relay KT3, K switch 2, limit switch SQ2 connect with this little shunt circuit, the running of control roars of laughter hopper hopper, the input of K switch 2 links to each other with the output of fuse FU1, and the output of little shunt circuit links to each other with zero line N;

The branch road 5 of described shunt circuit is composed in series with commutation air valve Q1 by the normally opened contact of relay K M2, and the input of the normally opened contact of relay K M2 links to each other with the output of fuse FU1, and the output of commutation air valve Q1 links to each other with zero line N;

The branch road 6 of described shunt circuit by time relay KT2, KT3 often open the parallel connection of timing closing contact after be composed in series with alarming horn B1, the input of the timing closing contact of KT2, KT3 links to each other with the output of fuse FU1, and the output of alarming horn B1 links to each other with zero line N.

The course of work of the present utility model and operation principle are:

At first the delay time with two-way time relay T1 is set at 30S and 20S, and the delay time of time relay KT2, KT3 all is set at 2 minutes; Close air switch QS1 in the main circuit, the time relay T1 on the branch road 2 gets electric work, delay time back and forth switching between 30S and 20S; K switch 1, K2 on the closed branch road 3 and 4, when the baking oven hopper lacks material, limit switch SQ2 closure, relay K M2, time relay KT3 get electric, the normally opened contact adhesive of KM2, KT3 picks up counting, AC relay KM on the branch road 1 simultaneously electric, the normally opened contact closure of KM in the main circuit, motor M work, commutation air valve Q1 also simultaneously electric promotion cylinder work, begin to the suction of hopper direction; Through after the 30S, two-way time relay T1 redirect, T1 normally opened contact closure, normally-closed contact becomes disconnection, the KM2 outage, KM cuts off the power supply simultaneously, and motor stops to the suction of baking oven hopper; Expect completely then that as if hopper KT3 cuts off the power supply because the material deadweight is fallen, and SQ2 disconnects under the conventional situation.But be not fed to material or do not supply abundant material owing to outside cause this moment, SQ2 can't disconnect, and KT3 is in running order always, when next work period engineering still is not drawn onto enough materials, KT3 timing closing contact closure, alarm sends alarm sound.In like manner, when the injection machine hopper lacks material, limit switch SQ1 closure, branch road 3 repeat circuit KM1 get, the normally opened contact closure of KM in the branch road 1, motor M work in the main circuit, beginning is not when two work periods of injection machine hopper feed are fed to material or do not supply abundant material, KT2 timing closing contact closure is reported to the police.

Fuse FU1, electrothermal relay FR1 play short circuit, overload protective function to circuit.

Claims

1, a kind of control system for bidirectional material suction device, comprise main circuit and control circuit, it is characterized in that, described main circuit comprises live wire L1, L2, L3, three-phase air switch QS1, A.C. contactor KM, electrothermal relay FR, motor M, described three-phase air switch QS1, the normally opened contact of A.C. contactor KM, electrothermal relay FR1 are connected across between three live wire L1, L2, the L3 successively, and the output of electrothermal relay FR1 connects the input of motor M;