CN201232108Y - Touching type power-saving switch for loom - Google Patents

Abstract

The utility model relates to a touch-type power-saving switch for a loom. Two adjacent contacts (2) are fixed on the switch handball (1), and threading holes (3) are opened through the switch handball (1); One end of a handball wire (4) is connected to the two contacts (2), and the other end is respectively connected to the first contact (A) and the second contact (B) in the amplifying circuit; the microswitch (5) passes through the control rod ( 9) Connect with the pull rope (8), the other end of the pull rope (8) is connected with the pull rod (7); the other end of the two micro switch wires (6) connected to the micro switch (5) is respectively connected to the amplifier circuit The first joint (A) and the second joint (B) in . As long as the operator touches the handball of the loom switch, the motor starts immediately, and the switch handle does not start to move to the driving position at this time, which ensures that the motor reaches a normal speed without load, thus avoiding sparse road defects and shuttle rolling Phenomenon.

Description

Loom touch type power saving switch

Technical Field The utility model relates to a touch-type switch device, in particular to a touch-type power-saving switch device for controlling a loom.

Background technology In the existing loom power-saving switch, the motor starts to start only when the switch handle leaves the parking position for a certain distance. And when driving, the switch handle only needs a very short time from the parking position to the driving position, so often the motor has not yet reached the normal speed, and the loom will rotate accordingly, which will easily cause sparse road defects of the fabric, or even shuttle rolling.

Contents of the utility model The technical problem to be solved by this utility model is to overcome the defects of the above-mentioned existing products, and provide a touch-type power-saving switch for looms, which avoids the phenomenon of sparse road defects and shuttle rolling through the no-load start of the motor; The no-load operation of the motor further improves the power saving performance.

The utility model adopts the following technical solutions.

A touch-type power-saving switch for a loom, including a switch handball and a micro switch installed on the handle, characterized in that two adjacent contacts are fixed on the switch handball, and a threading hole is opened through the switch handball One end of the two handball wires is connected to the two contacts, and the other end is respectively connected to the first contact and the second contact in the amplifying circuit; the micro switch is connected to the pull rope through the control rod, and the other end of the pull rope is connected to the pull rod; One end is connected to the two microswitch wires of the microswitch, and the other end is respectively connected to the first contact point and the second contact point in the amplifying circuit.

The first contact in the amplification circuit is connected to one of the handball wires and connected to the positive pole of the 6V DC power supply; the second contact is connected to the other handball wire and connected to the base of the first triode through the first resistor; The collector of a triode is connected to the positive pole of the 6V DC power supply through the second resistor; the emitter of the first triode is connected to the negative pole of the 6V DC power supply through the third resistor, and the emitter of the first triode is also connected to the first pole of the DC power supply. The base of the second triode, the collector of the second triode and the positive pole of the 6V DC power supply are respectively connected to both ends of the coil of the sensitive relay, and a protective reverse diode is connected in parallel at both ends of the coil; the sensitive relay An AC contactor for connecting with the motor is connected in series.

The positive effect of the utility model lies in: (1), as long as the hand of the operator touches the handball of the loom switch, the motor starts immediately, and the switch handle does not start to move to the driving position at this time, which ensures that the motor reaches normal without load The speed of the machine can avoid the phenomenon of sparse road defects and shuttle rolling. (2) When the loom is stopped, the switch handle is in the parking position, the pull rod falls, the normally open contact of the micro switch is separated, the operator's hand leaves the switch handball, the sensitive relay and the normally open contact of the AC contactor are separated , The motor loses power and stops, thus realizing the purpose of saving electricity.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic structural view of the switch handball of the present invention.

Fig. 2 is a structural schematic diagram of the micro switch control mechanism of the present invention.

Fig. 3 is a schematic diagram of the amplifying circuit of the touch-type energy-saving switch of the utility model.

Fig. 4 is a schematic diagram of the connection relationship between the sensitive relay and the AC contactor of the utility model.

Fig. 5 is a schematic diagram of the motor control circuit of the present invention.

The specific embodiment The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in FIG. 1 , two contacts 2 with a distance of about 1 mm are fixed on the switch handle 1 installed on the handle, and a threading hole 3 is provided through the switch handle 1 . One end of the two handball wires 4 is connected to the two contacts 2, and the other end is respectively connected to the first contact point A and the second contact point B in the amplifying circuit shown in FIG. 3 .

As shown in FIG. 2 , the micro switch 5 of the present utility model is connected with the pull rope 8 through the control rod 9 , and the other end of the pull rope 8 is connected with the pull rod 7 . One end is connected to the two microswitch wires 6 of the microswitch 5 and the other end is respectively connected to the first contact point A and the second contact point B in the amplifying circuit shown in FIG. 3 .

In the circuit shown in Figure 3, the first contact point A is connected to one of the handball wires 4 shown in Figure 1, and is connected to the positive pole of the 6V DC power supply. The second contact point B is connected to another one of the handball wires 4 shown in Figure 1, and is connected to the base of the first triode BG ₁ through the first resistor R1; the collector of the first triode BG ₁ passes through the first transistor BG ₁ The second resistor _R2 is connected to the positive pole of the 6V DC power supply; the emitter of the first triode _BG1 is connected to the negative pole of the 6V DC power supply through the third resistor _R3 , and the emitter of the first triode _BG1 is also connected to the second The base of the triode BG ₂ , the collector of the second triode BG ₂ and the positive pole of the 6V DC power supply are respectively connected to both ends of the coil of the sensitive relay J ₁ , and a protective inverter is connected in parallel at both ends of the coil. towards the diode.

As shown in Figures 4 and 5, the sensitive relay _J1 is connected in series with the AC contactor _J2 , and the AC contactor _J2 is connected to the motor.

The working power supply of the touch-type energy-saving switch circuit is a 6V DC power supply. The amplifier circuit mainly composed of two transistors is used as a switch circuit. The control signal of the circuit comes from the switch handball 1 of the loom. When the operator holds the switch handball 1, the hand touches the two contacts 2 on the switch handball 1 at the same time, and the six-volt DC power supply is connected through the handball wire 4, and the amplifying circuit is in the working state. The weak current amplifies and closes the normally open contact of the sensitive relay _J1 , and also closes the normally open contact of the AC contactor _J2 , thereby starting the drag motor of the loom.

In the process that the handle of the switch handball 1 is pushed to the driving position, the drag motor has entered the working state of normal operation, and the no-load start of the motor has been realized. When the handle of the switch handball 1 was pushed to the driving position, the normally open contact of the microswitch 5 was in a closed state under the control of the pull rod 7, and replaced the conductive effect of the human hand. When leaving the switch handball 1, the normal operation of the motor is still maintained.

When shutting down, the handle of the switch handball 1 is in the parking position, the contacts of the micro switch 5 are separated, and at the same time, the amplifying circuit loses the electrical signal of the switch handball 1, and the two crystal triodes are in the cut-off state, and the sensitive relay J ₁ and the AC contactor J The contacts of ₂ are separated, and the drag motor stops working.

Claims (2)

1, a kind of touch power-saving switch for loom, comprise the switch handball (1) and the microswitch (5) that are installed on the handle, it is characterized in that: be fixed with mutually adjacent two contacts (2) on the switch handball (1), and penetrating switch handball (1) offers through wires hole (3); Article two, handball lead (4) one ends connect described two contacts (2), and the other end connects first contact (A) and second contact (B) in the amplifying circuit respectively; Microswitch (5) is connected with stay cord (8) by control lever (9), and the other end of stay cord (8) is connected with pull bar (7); The other end of two microswitch leads (6) of one end connection microswitch (5) connects first contact (A) and second contact (B) in the amplifying circuit respectively.

2, touch power-saving switch for loom as claimed in claim 1 is characterized in that: first contact (A) in the amplifying circuit connects in the handball lead (4), and receives the positive pole of 6V dc source; Second contact (B) connects another in the handball lead (4), and by the first resistance (R ₁) the connection first triode (BG ₁) base stage; First triode (the BG ₁) colelctor electrode receive the positive pole of 6V dc source by second resistance (R2); First triode (the BG ₁) emitter stage receive the negative pole of 6V dc source, the first triode (BG through the 3rd resistance (R3) ₁) emitter stage also connect the second triode (BG ₂) base stage, the second triode (BG ₂) colelctor electrode and the positive pole of 6V dc source meet sensitive relay (J respectively ₁) the coil two ends, and at described coil two ends backward dioded that shields in parallel; Sensitive relay (J ₁) be serially connected with and be used for the A.C. contactor (J that is connected with motor (M) ₂).

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