CN1248934C - Long object supplying equipment - Google Patents

Abstract

To provide a long object supplying apparatus capable of increasing a production efficiency since the adjustment of tension by manpower is not required, manufacturable at a low cost since expensive parts are not used, and requiring less man-hour since a control circuit is also simple. In this long object supplying apparatus 1 feeding a long object 21 to a processing part 3, the tension of the long object under supply is detected by tension detection means 8 and 9, a torque in the reverse direction of the supply direction is given to the long object by a drive means INV2, and the torque is reduced or increased according to the increase or decrease of the detected tension.

Description

The long materials feedway

Technical field

The present invention relates to the long materials feedway, for example relate to the suitable long materials feedway that is used for supplying with long materials such as wrapper body paper (not printing state, hereinafter referred to as body paper) to rotary press.

Background technology

In the past, the tension force of the long materials of supplying with by vertical feedway, for example the tension force of the body paper of supplying with from the paper feeding device of direct rotary machine is to regulate by following mode.

(1) body paper is drawn from feed roll by the power of discharging side, at this moment needs the size of the friction resistance installed on the manual regulation feed roll, regulates the tension force that is applied on the body paper.

(2) use vector frequency converter and PG sensor (speed sensor), feed roll is rotated to the paper feeding direction on one side, regulate the tension force that is applied to body paper on one side.

But when using friction resistance to come adjustment of tonicity in above-mentioned (1), along with the growth of the time of batching, roller diameter changes the rotative speed that makes feed roll and also changes thereupon, and therefore, this all needing at any time to cause manual shift friction resistance.

In addition, when using vector frequency converter and PG sensor to come adjustment of tonicity in above-mentioned (2), because these things are very expensive, and control circuit is also complicated, needs expense and man-hour.

Summary of the invention

The present invention is content in view of the above, its objective is provides a kind of long materials feedway, thereby this device does not need manual shift tension force to enhance productivity, and, do not use the expensive component expense that makes to reduce, simultaneously its control method is also simple, thereby can save design, man-hour of installation, adjusting etc.

Main points of the present invention are, in order to solve above-mentioned problem, and a kind of long materials feedway from long materials to handling part that supply with is provided, have and detect the tension-detecting mechanism of supplying with the above-mentioned long materials tension force in the way, and give and driver train along the torque on the opposite sense of this direction of the supply of above-mentioned long materials, this driver train makes above-mentioned torque reduce, increase corresponding to the increase of above-mentioned detected tension force, minimizing.

Description of drawings

Fig. 1 represents the diagram of circuit of all formations of the direct rotary machine 1 of present embodiment.

Fig. 2 beats and rolls 8 right elevation.

Fig. 3 beats and rolls 8 front elevation.

The scheme drawing of Fig. 4 rang sensor 9 characteristics.

Fig. 5 adjusts the scheme drawing of the interlock ratio of master end frequency converter (the frequency converter INV1 of Printing Department) and slave end frequency converter (discharge portion frequency converter INV3) than vernier adjustment knob 18 by interlock.

Fig. 6 represents the diagram of circuit of formation of paper-feeding part frequency converter INV2 etc.

The specific embodiment

Followingly embodiments of the invention are described with reference to accompanying drawing.

Fig. 1 represents that the integral body of the direct rotary machine 1 of present embodiment constitutes.Direct rotary machine 1 is made of paper-feeding part 2, Printing Department 3, discharge portion 4 and reeling end 5.

Paper-feeding part 2 by feed roll 7, the motor M 2 that makes it to rotate, the paper-feeding part frequency converter INV2 that drives this motor M 2, the rang sensor 9 that rolls 8, be disposed at this of beating, beat and roll 8 front and rear rolling wheel 10,11 and constitute.In addition, the brief note of the frequency converter among the figure is " INV " (following identical).

Printing Department 3 is by being in anterior 14,6 print roller 15 of 13,6 Printing Department's rollers of roller, motor M 1 that these print roller 15 rotate and the frequency converter INV1 of Printing Department that drives this motor M 1 being constituted.

Discharge portion 4 is made of than vernier adjustment knob 18 trip roller 17, the motor M 3 that makes it to rotate, the discharge portion frequency converter INV3 that drives this motor M 3 and the interlock that is connected this discharge portion frequency converter INV3.

Reeling end 5 is made of winding roller 19, the torque motor TM that makes it to rotate, the torque motor power supply that drives this torque motor TM.

Body paper 21 is twisted on the feed roll 7, and this body paper 21 rolls 8 and supplies with Printing Department 3 through beating.In original direct rotary machine, the tension force of these body paper 21 grades is the sizes that are arranged on the friction resistance of feed roll by manual regulation, controls with respect to the output of PG sensor and the output of the vector frequency converter that changes.

In the present embodiment, utilize the motor M 2 that is driven by paper-feeding part frequency converter INV2,, body paper 21 is applied tension force along giving and feed roll 7 torques in the opposite direction with paper feeding side.Body paper 21, same, roll 8 and supply to Printing Department 3 through beating, but in the present embodiment, rang sensor 9 is installed in this and beats and roll on 8, and its detection signal is addressed to paper-feeding part frequency converter INV2 as negative feedback.Therefore, paper-feeding part frequency converter INV2 gives the tension force constant with body paper 21 with regard to driving paper-feeding part motor M 2.

In addition, though rang sensor needs power supply, this power supply by the frequency converter internal electric source 22 among the interior plant paper-feeding part frequency converter INV2 (+24Vdc) provide.Also have, sheet feed section frequency converter INV2 needs CRANK PULSES, even operation stop or more roll change and not batching under the situation of action also need, owing to keep giving better with the warp tension ratio of body paper 21, in the present embodiment, the output of common port DCM1 is offered the running instruction input port D11 of paper-feeding part frequency converter INV2, making the running instruction be in the state of unlatching (applying) always.

When 14 rotations of Printing Department's roller and generation tension force, same as described above, this tension force is detected by rang sensor 9, and paper-feeding part frequency converter INV2 drives paper-feeding part motor M 2 under the state of this constant tension.At this moment, drive Printing Department's motor M 1 of Printing Department's roller 14 and the frequency converter INV1 of Printing Department that drives this Printing Department's motor M 1, in order to drive all Printing Departments roller 14 simultaneously, compare with motor M 2 with paper-feeding part frequency converter INV2, used more high-capacity frequency converter and motor.In addition, no longer paper-feeding part frequency converter INV2 is provided revolution (frequency) instruction of the frequency converter INV1 of this Printing Department.Paper-feeding part frequency converter INV2 only controls constant tension force by the feedback signal of rang sensor 9, the feature place of Here it is present embodiment.

In Printing Department 3, by above-mentioned such 6 print roller 15 that disposed.When body paper 21 passes through each root print roller 15 respectively, carry out red, blue, yellow ... painted Deng style.Here the quality of finished product depends on the precision of the body paper 21 tension stabilities control of paper-feeding part 2.When tension force is unstable, will causes not having style and become off-grade.

Having passed through the body paper 21 of 6 print roller 15 is pulled out by the trip roller 17 that is connected on the motor M 3 that is driven with discharge portion frequency converter INV3.This trip roller 17 is owing to only work to pull out body paper 21, and its thickness no matter is as long as can keep just passable with the rotation of Printing Department roller 14 interlocks always.Therefore, revolution (frequency) the instruction input (VRF2-COM) of discharge portion frequency converter INV3 is supplied with in the simulation output (DA1-COM) of the revolution (frequency) of the frequency converter INV1 of Printing Department instruction, and discharge portion frequency converter INV3 revolution (frequency) is just turned round to carry out interlock with the proportional mode of revolution (frequency) of the frequency converter INV1 of Printing Department.

The operator can adjust the ratio of this interlock running at an easy rate by method as shown in Figure 5.Here the content of Fig. 5 simple explanation in addition just.

Among Fig. 5, master end INV is the frequency converter INV1 of Printing Department shown in Figure 1, and slave end INV is discharge portion frequency converter INV3 shown in Figure 1.INV3 has externally assembled interlock than vernier adjustment knob 18 (shown in Figure 1), and the power supply of being regulated than vernier adjustment knob 18 at this interlock is the situation of 0-10V, just supplies with INV3 with 5V voltage when interlock mediates than vernier adjustment knob 18.(power supply is that 0-5V is also passable.Perhaps, also can be without vernier adjustment knob, but directly input voltage the time, the electric current of input 4-20mA.)

When incoming signal was center (5V), discharge portion frequency converter INV3 was just along with the instruction of the revolution (frequency) of the frequency converter INV1 of Printing Department, was 1 output frequency to be exported with the gain multiplying power.For example, (situation of 4 utmost points, frequency are 20Hz to the instruction of the revolution (frequency) of Printing Department's frequency converter INV1 for 600rpm.Below identical) time, discharge portion frequency converter INV3 also exports identical revolution (frequency) 600rpm (20Hz).

When the variation interlock changed the incoming signal that mails to port VFR2 than vernier adjustment knob 18, gain became big when signal was strengthened, and gaining during signal weakening diminishes.Since the gain with interlock during than vernier adjustment knob 18 usefulness maximum variable values (0 or 10V) can enough INV3 performance perameter Cd065 set the percentum form for and constitute, just can easily adjust interlock and gain than the variable range and the interlock of vernier adjustment knob 18 according to different purposes.

For example, when performance perameter Cd065 is set at 100%, when interlock is input as 10V than vernier adjustment knob 18 as the maximum to port VFR, the instruction of the revolution (frequency) of the frequency converter INV1 of Printing Department is when be 600rpm (20Hz), and discharge portion frequency converter INV3 has just increased by 100% frequency 1200rpm (40Hz) with it and exported.

Like this, in case performance perameter Cd065 has configured, operating personal just can be regulated the interlock gain at an easy rate as long as regulate vernier adjustment knob 18 thereafter.Therefore, saved the adjusting of loaded down with trivial details performance perameter change.

The body paper that prints 21 from Printing Department draws batches with being positioned at last winding roller 19.In the present embodiment, batch and use motor to constitute by torque motor (paddle motor) TM.Torque motor is driven by source power supply, and its voltage is come by conversions such as slip voltage transformers, and the torque of generation is changed.But along with the passing of the time of batching, the size of paper roll changes, and does not change in order to make coiling tension, just must regulate the slip voltage transformer, and the manual regulation torque of having to.If reeling end 5 detects tension force too and carries out speed control by frequency converter and just might realize automation.

The tension force that below just is used to control the body paper of supply makes it keep constant beating to roll 8 and rang sensor is quoted Fig. 2 and Fig. 3 is illustrated.At first, beat roll 8 its 24 dispose spring 23 up and down, just move up when increasing from the discharge tension force of Printing Department 3, otherwise, then move down when reducing.This is beated and rolls 8 roles and absorb rapid tension variation by moving up and down in addition.

Above the roller bearing 24 of beating, be equipped with the rang sensor 9 that detects these roller bearing 24 distances of beating, can detect the mobile status of beating and rolling with voltage signal.The characteristic that detects distance and the output voltage of rang sensor 9 is 0V with 3mm as shown in Figure 4, and 16mm is the linear relationship output of 10V.The 36th, upside limiting stopper, the 37th, downside limiting stopper, the 38th, dancer roll.

More than illustrated from paper-feeding part 2, Printing Department 3, discharge portion 4 until all formations of the direct rotary machine 1 of reeling end 5.Below, to key component of the present invention, the tension force of control paper-feeding part 2 makes it constant, is illustrated with reference to Fig. 6.

Paper-feeding part 2 and Printing Department 3 have only been expressed among Fig. 6.Paper-feeding part frequency converter INV2 shown in Fig. 1, be as shown in Figure 6 by PWM (the wide adjusting of the pulse) efferent 26 of supplying with motor M 2 three-phase alternating voltages, to its send voltage instruction voltage instruction control part 27, to same PWM efferent 26 send the running command direction determination section 28 of running instruction and rotation direction instruction and frequency converter internal electric source 22 (+24Vdc) constitute.

The three-phase alternating voltage output drive motor M2 of paper-feeding part frequency converter INV2 by PWM efferent 26 rotates feed roll 7, and the instruction of carrying out this running is that the contact switch 30 by running instruction manipulation portion 29 provides.When this contact switch 30 is opened (conducting), running command direction determination section 28 just sends the output three-phase alternating voltage to PWM efferent 26 instruction.

In addition, the rotation direction of motor M 2 can be decided by the phase difference (rotating) of the three-phase alternating voltage of paper-feeding part frequency converter INV2, but this instruction determines according to the performance perameter of rotation direction instruction department 32.

The establishing method of rotation direction instruction manipulation portion 32 has been prepared two kinds, when the setting of rotation direction instruction manipulation portion 32 itself specifies rotation direction to be reverse directions, set performance perameter Cd130=2, rotation direction instruction manipulation portion 32 does not specify rotation direction, when carrying out, set performance perameter Cd630=2 with exterior contact point signal.When setting performance perameter Cd630=2, the contact input port DI1-DCM1 of above-mentioned running instruction manipulation portion 29 just becomes the importation of the running instruction of reverse directions.

Frequency (revolution) instruction (among the figure with f instruction expression) of mailing to PWM efferent 26 is given among the performance perameter Cd029 of frequency instruction operating portion 33 with the instruction that the unit of frequency sets.PWM efferent 26 output is instructed the three-phase alternating voltage of corresponding frequency (revolution) with this.

The peaked voltage amplitude limit instruction of the three-phase alternating voltage that decision PWM efferent 26 is exported is that to set for voltage by the performance perameter Cd005 with basic voltage setting operation portion 34 be that unit obtains.Voltage instruction control part 27 sends voltage instruction (representing with the V instruction among the figure) according to the output of this voltage amplitude limit instruction and rang sensor 9 to PWM efferent 26, and PWM efferent 26 is according to this instruction output three plase alternating current (being described in detail later).

In addition, the rotation direction instruction manipulation portion 32 among Fig. 6, frequency instruction operating portion 33, basic voltage configuration part 34 are present in the same device, and operating personal just can be set each performance perameter by keying in operation.

The common basic structure of frequency converter is, accepts three-phase alternating voltage, utilize rectifier to be converted into direct current (DC) after, the ratio of control pwm voltage frequency number is constant and drives load side motor that in the present embodiment, the characteristics of frequency converter are:

(1). frequency fixing is a low frequency.

(2). the rotation direction instruction is opposite with the paper feeding direction.

(3). output voltage is by the negative feed-back control of rang sensor 9.

(4). be not that control V/f is constant, voltage V and frequency f are to control fully independently.

In addition, though the rotation direction instruction is set at reversing sense, because tension force corresponding to body paper 21, promptly from the expulsion force of Printing Department 3, the output voltage (relevant with torque) of PWM efferent 26 is carried out variable control, therefore can not rotate in the opposite direction, carry out paper feeding but have certain tension force (torque) with paper feeding side.

In addition, because motor M 2 is to rotate along the paper feeding direction on the contrary mutually with the rotation direction instruction like this, frequency instruction is just inoperative.In a word, control frequency not, setting preferably that its value makes can be apace to the reversing sense high speed rotating when abnormal condition such as scarce paper.The present embodiment medium frequency is set at the 0.5Hz or the 1Hz of low frequency.

After rotation direction and frequency instruction are determined, open the running instruction and make motor M 2 along rotating in the opposite direction with paper feeding side.But because Printing Department 3 stops operating or carry out discharging operation to the paper feeding direction, feed roll 7 is to counter-rotation, just produce one with paper feeding direction opposite sense on tensile stress.

Like this, beat and roll 8 risings, the output of rang sensor 9 just changes (Fig. 4) to the direction that reduces.Signal from this rang sensor 9 is fed back to paper-feeding part frequency converter INV2, is transfused to from the VRF1 port.The signal of the rang sensor 9 that is fed back is converted into the output voltage instruction (V instruction) of PWM efferent 26 at voltage instruction control part 27.

This substitution ratio is that the value that will be set at basic voltage parameters C d005 converts as maxim.That is to say that when the maxim of rang sensor 9 was 10V, during according to input 10V, the output voltage of the frequency converter that basic voltage Cd005 sets converted.In the present embodiment, consider expectation tension force and produce the relation of torque that d005 is set at about 50V with the basic voltage parameters C.Therefore, when rang sensor was supplied with maxim 10V, voltage instruction control part 27 just sent the instruction of output 50V voltage to PWM efferent 26.

Be switched to the output voltage of paper-feeding part frequency converter INV2 like this from the feedback signal of rang sensor 9, the output voltage of PWM efferent 26 changes with regard to rolling 8 position according to beating.That is to say, roll 8 position corresponding to beating and carry out controlled reset.

This action causes beating Printing Department's 3 excessive discharges when rolling 8 risings,

→ to beat and roll the 8 output reductions of rising and making rang sensor 9, the output voltage of PWM efferent 26 descends.

→ like this, the torque of motor 2 reduces, and reduces to reciprocal tensile force, and beat and roll 8 declines.

→ to beat to roll down and fall when too much, tension force reduces, and the output of rang sensor 9 increases.

So →, the torque of motor 2 increases, and increases to reciprocal tensile force, beats and rolls 8 risings.

Repeat above-mentioned action, roll 8 position just at stable local constant time at body paper tension force and beating soon.This control is owing to be to implement by slow ride gain (processing cycle), thereby can not take place to roll 8 and swing up and down and unusual generation such as body paper breakage because of rapid transition change causes beating.

Like this, in the present embodiment, can keep beating always and roll 8 position stability and make controlled reset work by voltage instruction.

In addition, frequency instruction and voltage instruction fully independently, frequency instruction is given to low frequency instruction in the PWM efferent 26 always.

In addition, the present invention is not limited to the foregoing description, for example also can adopt following variation.

(1) in the present embodiment, beats and roll 8 move up and down by rang sensor 9 and detect, also can use for example potential device, differential transformer to wait that detecting beats to roll 8 move up and down.In addition, in the present embodiment, be to beat with this to roll 8 move up and down and detect the tension force that is applied on the body paper 21, also can be on the roller 11 that rolls 8 back of beating the setting pressure sensor, detect the pressure that is applied on the roller 11 with this pressure sensor, thereby detect the tension force that is applied on the body paper 21.

(2) present embodiment is an object with body paper 21, can be object with the long materials that certain width is arranged of the long materials of wire such as electric wire, steel rope, cloth, polyethylene foil and so on also.

(3) instruction of voltage amplitude limit is not limited to by operating portion setting basic voltage parameter and regulates, and also can set the basic voltage parameter by external knob and regulate.

Narrate the formation of present embodiment and the corresponding relation of the said formation of claim at last.The body paper 21 of present embodiment is equivalent to said long materials in the claim.Below similarly, Printing Department is equivalent to handling part.Paper-feeding part 2 is equivalent to the long materials feedway.Beat roll 8 and rang sensor 9 be equivalent to tension-detecting mechanism.Paper-feeding part frequency converter INV2 is equivalent to driver train.

Adopt the present invention, the long materials feedway of long materials is provided to handling part, detect the tension force of supplying with the above-mentioned long materials in the way with tension-detecting mechanism, give and rightabout torque of above-mentioned long materials by driver train, make above-mentioned torque reduce, increase corresponding to the increase of above-mentioned detected tension force, minimizing along this direction of the supply.

As a result, the discharge operation automation in the time of can being implemented in by artificial adjustment tension force or disconnected paper and replacing winding roller, thus enhance productivity.

In addition because the adjusting of tension force does not need to exchange and handle the interlock signal of side revolution, mainly to control also just such as the output voltage of frequency converter, so, so just make design, installation, adjustment etc. relatively simpler, when not taking a lot of work.

In addition, the control detection main part does not need to use expensive vector frequency converter and speed sensor (PG sensor) just such as rang sensor, has so just reduced expense.

Claims (2)

1. long materials feedway, this device is used for supplying with long materials to handling part, it is characterized in that, have tension-detecting mechanism that detect to supply with the above-mentioned long materials tension force in the way and give and driver train along the torque on the reversing sense of this direction of the supply of above-mentioned long materials, this driver train makes above-mentioned torque reduce, increase corresponding to the increase of above-mentioned detected tension force, minimizing.

2. long materials feedway as claimed in claim 1, it is characterized in that, above-mentioned long materials comprises body paper, mentioned strain testing agency comprises that detecting beating of body paper tension force rolls and rang sensor, and above-mentioned driver train comprises the motor that frequency converter and this frequency converter drove of controlling above-mentioned torque.

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