CN202279888U

CN202279888U - Self-stopping circuit for press roll contact-type drawing frame

Info

Publication number: CN202279888U
Application number: CN2011202530502U
Authority: CN
Inventors: 贾军海
Original assignee: Jihua 3542 Textile Co Ltd
Current assignee: Jihua 3542 Textile Co Ltd
Priority date: 2011-07-14
Filing date: 2011-07-14
Publication date: 2012-06-20
Anticipated expiration: 2021-07-14

Abstract

The utility model discloses a self-stopping circuit for a press roll contact type drawing frame, and the self-stopping circuit comprises an insulated bracket, an upper press roll central shaft, an upper press roll, a sliver, a lower press roll, a lower press roll bracket, a frame, a direct current power supply, an alternating current power supply, a switch, a solid-state relay and an alternating current contactor. The self-stopping circuit is characterized in that one low-voltage input end of the solid-state relay is serially connected with a self-stopping switch; the self-stopping switch is connected with the anode of a 36V direct current power supply; the other low-voltage input end of the solid-state relay is connected with the cathode of the 36V power supply; the cathode of the 36V direct current power supply is connected with the frame (in ground connection); a high-voltage output end is connected with an original 380V power supply of the drawing frame; the high-voltage input end of the solid-state relay is serially connected with the coil of the alternating current contactor; and the alternating current contactor is connected with the other phase of the 380V power supply. The solid-state relay serves as a master control element of the self-stopping circuit; the interference is small; the sensitivity is high; the fault caused by heavy dust and flying dust in the textile industry is effectively overcome; the quality of products is increased; and the labor intensity of workers is relieved.

Description

A kind of pressure roller contact drawing frame automatic stopping circuit

Technical field

The utility model relates to weaving drawing frame guide strip rack breakage auto stop circuit, specifically a kind of pressure roller contact automatic stopping circuit.

Background technology

At present, in known ribbon lap machine, be the FA303 drawing frame like model; Tambler behind the machine, what generally adopt is that mechanical compaction roll contact low pressure automatic stop arrangement detects whether lap ruptures or with empty, but owing to the cotton mill dust is big; Flyings are many. and dust and flyings cause loose contact attached to the irony pressure roller, and its sensitivity can not be adjusted in addition, often causes automatic stop malfunctioning; Bring very big hidden danger to product quality, increased spinner's labour intensity.

Summary of the invention.

The purpose of the utility model is in order to overcome the bar that ruptures behind the existing drawing frame machine; Cause often malfunctioning and the problem that has a strong impact on product quality; A kind of pressure roller contact drafting automatic stopping circuit is provided, and the advanced solid-state relay of this circuit employing is done master element, overcomes dust and the oily loose contact that causes through promoting pressure roller detection voltage; Have highly sensitive, the function of adaptivity.

The technical scheme of the utility model is: a kind of pressure roller contact drawing frame automatic stopping circuit; Comprise insulating support, go up the pressure roller central shaft, go up pressure roller, sliver, lower compression roller, lower compression roller support, frame, dc source, AC power, Automatic stop switch SA1, solid-state relay A, A.C. contactor KM1; It is characterized in that: low pressure input K1 and the Automatic stop switch SA1 of solid-state relay K are in series, and Automatic stop switch SA1 is connected with the 36V dc power anode; The low pressure input K2 of solid-state relay K is connected with the negative pole of 36 volts of power supplys, the negative pole of 36V dc source be connected with frame 7 (ground connection); High-voltage output end K3 is connected with the electrical source of power 380V of former drawing frame, and the high voltage input terminal K4 of solid-state relay K connects with the coil of A.C. contactor KM1, another phase of another termination of the coil of A.C. contactor KM1 380V power line.

The beneficial effect of the utility model is: owing to adopted solid-state relay to do master element, disturbs very for a short time, highly sensitive, it is big effectively to overcome cotton spinning industry dust, more than the flyings and and the fault that causes has improved product quality, alleviated working strength of workers.

Description of drawings

Below in conjunction with accompanying drawing the utility model is done further explanation:

Fig. 1 is the utility model drawing frame structural representation

Fig. 2 is former drawing frame breakage auto stop circuit diagram

Fig. 3 is the utility model drawing frame breakage auto stop circuit diagram

In the drawings, 1, insulating support, 2, go up the pressure roller central shaft, 3, go up pressure roller, 4, sliver, 5, lower compression roller, 6, the lower compression roller support, 7, frame, SA1 is that Automatic stop switch, KA1 are that 12V auxiliary reclay, KM1 are that 380V A.C. contactor, K are solid-state relay

The specific embodiment

In prior art scheme shown in Figure 1; Former machine Automatic stop switch SA1 is connected with last pressure roller central shaft 2 through lead; Insulating effect through sliver makes not conducting of electric loop between lower compression roller; Auxiliary reclay KA1 coil does not have electricity is failure to actuate, and its normally-closed contact KA1～1 conducting makes A.C. contactor KM1 coil that 380 volts of voltage adhesives, complete machine operate as normal arranged.In case the sliver fracture, last pressure roller 3 contacts with lower compression roller 5 because of the effect at gravity, thereby makes Automatic stop switch SA1 closed; Auxiliary reclay KA coil gets electronic work, and its normally-closed contact KA2 breaks off, and A.C. contactor KM1 discharges; Complete machine quits work, because last pressure roller central shaft 2 and last pressure roller 3 be connected through bearing, in normal productive process; The inner grease of bearing and dust adsorbed and go up roller surface and the fricative cotton of sliver cured all are insulating matters, after sliver ruptured, the resistance of getting an electric shock indirectly of last lower compression roller can increase; What former in addition machine adopted is 12 volts of voltages, and loose contact causes that often automatic stop arrangement is malfunctioning, causes the sliver on the drawing frame to have no progeny machine still in operation; Cause product quality defective, also bring hidden danger, increased working strength of workers to safety in production.

Fig. 3 is the embodiment of the utility model; To the problem that exists in the prior art scheme; Original drawing frame 12V power supply, auxiliary reclay KA are removed; The disconnected bar testing circuit that design and installation one cover is made up of solid-state relay K, low pressure input K1 and the Automatic stop switch SA1 of solid-state relay K are in series, and Automatic stop switch SA1 is connected with the 36V dc power anode; The low pressure input K2 of solid-state relay K is connected with the negative pole of 36 volts of power supplys, the negative pole of 36V dc source be connected with frame 7 (ground connection); High-voltage output end K3 is connected with the electrical source of power 380V of former drawing frame, and the high voltage input terminal K4 of solid-state relay K connects with the coil of A.C. contactor KM1, another phase of another termination of the coil of A.C. contactor KM1 380V power line; Insulating effect because of sliver in the ordinary production makes not conducting of electric loop between lower compression roller, the not conducting of inside of solid-state relay A low-pressure side, high-pressure side conducting, A.C. contactor adhesive, complete machine operate as normal.In case the sliver fracture, last pressure roller contacts with lower compression roller because of the effect of gravity, thereby makes K closed; The conducting of solid-state relay K low-pressure side, high-pressure side are broken off A.C. contactor KM1 are discharged, and complete machine can quit work; Because solid-state relay inside is voltage detecting, the electric current that input needs is very little, to inner grease and the dust adsorbed of bearing that produces in the production process; And go up materials such as roller surface and the fricative cotton of sliver be cured; The contact resistance that produces etc. has extremely strong pardon and adaptivity, so detection sensitivity is very high, can stop because the influence that disconnected bar does not stop product quality is caused.

Claims

1. pressure roller contact drawing frame automatic stopping circuit; Comprise insulating support, go up the pressure roller central shaft, go up pressure roller, sliver, lower compression roller, lower compression roller support, frame, dc source, AC power, Automatic stop switch, solid-state relay, A.C. contactor; It is characterized in that: the low pressure input (K1) of solid-state relay (K) is in series with Automatic stop switch (SA1), and Automatic stop switch (SA1) is connected with the 36V dc power anode; The low pressure input (K2) of solid-state relay (K) is connected with the negative pole of 36 volts of power supplys, and the negative pole of 36V dc source is connected with frame (7); High-voltage output end (K3) is connected with the 380V power supply of former drawing frame, and the high voltage input terminal (K4) of solid-state relay (K) is connected with the coil of A.C. contactor (KM1), the other end of A.C. contactor (KM1) coil with another mutually the 380V power line join.