CN201485108U

CN201485108U - Tension automatic controlling device for cloth feeding machine

Info

Publication number: CN201485108U
Application number: CN2009201600479U
Authority: CN
Inventors: 王权; 沈勤荣
Original assignee: Huzhou Tenka Special Print Material Co Ltd
Current assignee: Huzhou Tenka Special Print Material Co Ltd
Priority date: 2009-06-16
Filing date: 2009-06-16
Publication date: 2010-05-26
Anticipated expiration: 2019-06-16

Abstract

The utility model relates to a tension automatic controlling device for a cloth feeding machine, which comprises a cloth feeding shaft, a magnetic powder clutch arranged on the cloth feeding shaft and a counting probe of a counter facing to the cloth feeding shaft. The counter outputs a digital signal to a controller; a power circuit consisting of a bridge rectifier circuit Q, a capacitor C3, a capacitor C4, a capacitor C5, a diode D and a chip IC supplies power to a tension control circuit; the digital signal output by the counter S is converted into a voltage signal through a capacitor C1; a buffer capacitor C2 is matched with the capacitor C1; the capacitor C1 and the capacitor C2 are respectively connected in parallel with two normally open contacts J1-1, J1-2 of a relay; and the buffered signal is amplified by a nematic-phase amplifying circuit consisting of a BG1, a BG2 and a BG3 so that the voltage signal is output to the magnetic powder clutch. By using the circuit to control the tension of the cloth feeding shaft, the tension automatic controlling device can smoothly and gradually decrease the tension with the decreasing of a releasing radius; and in a production process, the tension on the cloth feeding shaft is automatically adjusted by the circuit according to practical production needs, so the product quality is improved.

Description

Put cloth machine automatic tension control apparatus

Technical field:

The utility model relates to the cloth machine technology field of putting, more specifically to a kind of control setup of putting magnetic-powder clutch on the cloth beam of putting the cloth machine.

Background technology:

As shown in Figure 1, existing tensioner structure of putting the cloth machine is: be fixedly connected with a tension force on the cloth beam 101 and roll 102 putting, sheet metal press strip 103 1 ends are fixedly connected on the frame plate 104, its main body posts at tension force and rolls on 102, the other end is fixedly connected with extension spring 105, the bottom of extension spring 105 is fixedly connected with nut 106, bolt 107 be screwed onto on the frame plate 104 and this nut 106 in.During use, when the staff need adjust tension force, realize regulating the tension force of putting cloth beam 101 by the pulling force that upwards is rotated down bolt 107 change extension springs 105.

Its weak point: 1, this hand control mode can not be accomplished along with unreeling turning down of radius with diminishing smooth gradual change; 2, its several sections control that can only reduce greatly generally need to adjust about 8 times, have increased operative employee's labor content.3, because its adopts the control of manual setting tension spring tension to putting the tension force of cloth beam 101, so in process of production, it is very inhomogeneous to put on the cloth beam 101 tension force, influences product design.

It is exactly magnetic-powder clutch that the device of the axial tensile force of being exclusively used in control is arranged at present on the market, and this magnetic-powder clutch, though it can provide a constant relatively tension force to putting cloth beam, but it still can not accomplish to turn tension force automatically down along with putting the smooth gradual change ground of diminishing that the cloth machine unreels radius, thereby guarantees to produce the quality of product.

The utility model content:

The purpose of this utility model is to provide puts cloth machine automatic tension control apparatus, and it can accomplish to turn tension force automatically down along with putting the smooth gradual change ground that diminishes that the cloth machine unreels radius, thereby guarantees to produce the quality of product.

Technology solution of the present utility model is as follows:

Put cloth machine automatic tension control apparatus, comprise and put putting cloth beam 1, putting magnetic-powder clutch 2 is installed on the cloth beam 1 of cloth machine, place the counting probe 3 of counting machine S in the face of putting cloth beam 1, digital signal of counting machine S output is given controller 4, is placed with tension control circuit in the controller 4, the power circuit of power supply is provided to tension control circuit; Tension control circuit is by signaling conversion circuit, buffer circuit, row phase amplifying circuit three parts are formed, by bridge rectifier circuit Q, capacitor C 3, C4, C5, the power circuit that diode D and chip IC constitute is powered to tension control circuit, the digital signal of counting machine S output is converted to voltage signal through capacitor C 1, be combined with a buffer capacitor C2 with capacitor C 1, capacitor C 1, C2 is two open contact J1-1 of relay in parallel respectively, J1-2, signal after the process buffering is again via BG1, BG2, the row phase amplifying circuit that BG3 forms amplifies, and exports a voltage signal and gives magnetic-powder clutch 2.

The voltage signal that described row phase amplifying circuit amplifies output flows to magnetic-powder clutch 2 after adjustable resistance W regulates.

Described counting probe 3, counting machine S, controller 4 are fixed on and put on the cloth frame 5.

The beneficial effects of the utility model are:

1, the size of utilizing circuit control to put cloth beam tension force, it can accomplish to turn tension force down along with what unreel radius with diminishing smooth gradual change;

2, it utilizes the circuit automatic guidance, has reduced the labour intensity of operation, and once start can be avoided forgetting the product quality problem that operation or maloperation cause because of the operative employee.

3, in the production process, put on the cloth beam tension force and regulate voluntarily, improved product design according to the needs of production circuit.

Description of drawings:

Fig. 1 is the prior art constructions scheme drawing;

Fig. 2 is a structural representation of the present utility model;

Fig. 3 is a control principle block scheme of the present utility model;

Fig. 4 is an electrical schematic diagram of the present utility model.

The specific embodiment:

Embodiment, see Fig. 1～4, put cloth machine automatic tension control apparatus, comprise and put putting cloth beam 1, putting magnetic-powder clutch 2 is installed on the cloth beam 1 of cloth machine, place the counting probe 3 of counting machine S in the face of putting cloth beam 1, digital signal of counting machine S output is given controller 4, is placed with tension control circuit in the controller 4, the power circuit of power supply is provided to tension control circuit; Tension control circuit is by signaling conversion circuit, buffer circuit, row phase amplifying circuit three parts are formed, by bridge rectifier circuit Q, capacitor C 3, C4, C5, the power circuit that diode D and chip IC constitute is powered to tension control circuit, the digital signal of counting machine S output is converted to voltage signal through capacitor C 1, be combined with a buffer capacitor C2 with capacitor C 1, capacitor C 1, C2 is two open contact J1-1 of relay in parallel respectively, J1-2, signal after the process buffering is again via BG1, BG2, the row phase amplifying circuit that BG3 forms amplifies, and exports a voltage signal and gives magnetic-powder clutch 2.

Principle of work: probe is installed in to be put in the cloth rotating shaft, whenever circle an impulse singla output is just arranged, register carries out additional calculation (positive rise is effective) counting machine with the impulse singla of sending here and exports to next stage as required, but the uncontrollable stabilized current supply of this digital signal is done the variation of electric current output size, therefore between them, install the digital to analogy conversion of one-level automatically controlled additional, the receptible analog signal in digital signal conversion back that counting machine is sent here (0～5V), and the analog voltage signal of this 0～5V is according to the increase of counter value and linear the rising.The control voltage that has satisfied linear rising can't satisfy the operating needs in the production, this is to be diameter maximum at the beginning because put cloth, and along with the increase diameter of revolution diminishes gradually, when therefore beginning, lock torque should be maximum, because diameter is big, the power that needs in the time of rolling is just little, so must increase the needs that braking force satisfies rolling tension force.Therefore moment satisfies and produces needs in the time of must installing the one-level inverter stage additional after digital to analogy conversion automatic guidance is begun, digital to analogy conversion automatic control panel output voltage is exactly to change from 5 → 0V like this, the constant-current source outgoing current also is that rated value changes to 0 gradually that (this electric current can be aligned as required, and maximum can not surpass the maximum current that magnetic-powder clutch allowed certainly at the beginning.)

Tension force is big when finishing when opening the band process and begin according to actual measurement, so according to this production technology, with revolution control brake power, linear fully decline still is not all right, to caudal half-sclerotome, lock torque should descend quickerly in the time of below 300 meters, itself is directly proportional basically with revolution control brake power, because reducing along with radius, rotating speed can be accelerated, its revolution signal rises and accelerates, and control voltage can be accelerated descending speed along with the revolution of accelerating.The control method that this voltage signal and rotating speed are inversely proportional to, tension force are constant substantially, can't satisfy fully and produce needs.

So added a rechargeable digital to analogy conversion of electric capacity in the above on our the described mode again, therefore the charge curve of electric capacity just is that beginning is slow, just rise finally and accelerate, just slow down when being full of to the end, just take away that section that begins to the quickening of rising in the time of our designed lines, the requirement that last tension force will reduce on the last compensate for process.

Claims

1. put cloth machine automatic tension control apparatus, comprise and put putting cloth beam (1), putting magnetic-powder clutch (2) is installed on the cloth beam (1) of cloth machine, it is characterized in that: place the counting probe (3) of counting machine (S) in the face of putting cloth beam (1), digital signal of counting machine (S) output is given controller (4), is placed with tension control circuit in the controller (4), the power circuit of power supply is provided to tension control circuit; Tension control circuit is by signaling conversion circuit, buffer circuit, row phase amplifying circuit three parts are formed, by bridge rectifier circuit (Q), electric capacity (C3, C4, C5), the power circuit that diode (D) and chip (IC) constitute is powered to tension control circuit, the digital signal of counting machine (S) output is converted to voltage signal through electric capacity (C1), be combined with a buffer capacitor (C2) with electric capacity (C1), electric capacity (C1, C2) two open contact (J1-1 of difference relay in parallel, J1-2), signal after the process buffering is again via (BG1, BG2, BG3) the row phase amplifying circuit of forming amplifies, and exports a voltage signal and gives magnetic-powder clutch (2).

2. the cloth machine automatic tension control apparatus of putting according to claim 1 is characterized in that: the voltage signal that row phase amplifying circuit amplifies output flows to magnetic-powder clutch (2) after adjustable resistance (W) is regulated.

3. the cloth machine automatic tension control apparatus of putting according to claim 1 is characterized in that: counting probe (3), counting machine (S), controller (4) are fixed on and put on the cloth frame (5).