JPS58148769A - Method and apparatus for controlling transfer printing - Google Patents

Abstract

PURPOSE:To cut down the cost of transfer controller by raising its productivity by using a mass production system and permitting high-speed transfer by a method in which temperature, pressure, speed, and the amount of adhesive used are controlled by an electrical means according to detected tension of a transfer sheet so as to omit monitoring operation for defective product. CONSTITUTION:When soap 1 is sent from a conveyer 2a to a supporting base 10, the base 10 is vertically moved, and a transfer sheet 19 is pressed on a heating roller 9 through the soap 1. Since the heating roller 9 turns, transfer is made on the soap 1 instantaneously, and the soap 1 is sent to a take-out conveyer 2b. In this case, the tension value F of the transfer sheet 19 is always detected on a differential transformer 26, and when transferring condition is not good, a large tension value F or small tension value F is detected on the differential transformer 26. The previous tension value is erased, and the detected tension value F is newly banked and varied for every one time. When the difference (f) between the tension value F and the best tension value Fo exceeds alpha, the cause is checked and any one of temperature T, pressure P, and adhesive amount A is controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a transfer control method and a transfer control device that automatically control so as not to produce defective products during transfer and that can be mass-produced.

In conventional transfer printing, 86m degree printing or automation has not been developed yet. For this reason, the temperature during transfer,
There were the following problems with pressure, speed, and adhesive type.

In terms of humidity, heat gradually creeps up from the heating roller with each transfer, and heat is added to compensate for this. Conventionally, this was done manually, so the temperature at the temporary transfer area However, when the room temperature fluctuates and the transfer speed increases, there is little help in absorbing heat from the transferred material and supplementing the heat of the heating roller, making large-scale production impossible.

In terms of pressure, if there is variation in the thickness of the transferred material, air may get into the gap between the transferred material and the printing layer, or conversely, too much pressure may be applied to the transfer material and damage the transferred material. However, due to the variation in the thickness of the transferred member, it was not possible to manually adjust the thickness. Therefore, it may be considered to increase the pressure with a certain margin of conflict, otherwise the transfer sheet or the transferred member would remain stuck to the transfer sheet and become unusable.

In terms of speed, as mentioned above, there was no limit to how fast a bolt could be produced, but if defective products started appearing, the process had to be stopped and restarted, which resulted in a lot of waste.

Conventionally, adhesives were applied by hand, so there were variations in the amount of adhesive used for each transferred material, and even if the temperature mentioned above was constant, the best transfer material and the poor one. There were times when I ended up.

The present invention has focused on the fact that when a defective product is produced during transfer, the tension waveform of the transfer sheet fluctuates compared to when no defective product is produced, and it has been discovered that the tension can be controlled by constantly detecting the tension.

One of the purposes of the invention is to detect the tension of the transfer sheet and control the pressure, speed, and adhesive cover, and to always maintain the temperature etc. in the best condition to avoid producing defective products. There's so much to do.

Another object of the present invention is to eliminate the trouble of monitoring for the presence or absence of defective products, increase work efficiency, improve productivity, and reduce product costs.

Another object of the present invention is to provide a transfer method and a transfer apparatus that can accurately control temperature, pressure, speed, and adhesive cover, can respond quickly enough to high-speed transfer, and can achieve large-scale production.

An embodiment embodying the present invention will be described below based on the illustrated embodiment.

In this embodiment, the transferred member 1 is a soap 1, which is fed by a feeding conveyor 2a, transferred n1, and then sent out by a take-out conveyor 2b. A sprayer 6 and a preheater 4 are provided in front of the feeding conveyor 2a.
I am trying to warm up the right hand 1 after spraying. The heat given by this preheater 4 is for lowering the heat absorption rate during thermal transfer. This adhesive is used not only to attach the printing of the transfer sheet described later, but also to suppress the surface active action of the soap 1.

The amount of adhesive applied to the soap 1 by the sprayer 6 is determined by the amount of spray. This adhesive jiA
is detected by an adhesive sensor AS5 using a differential pressure dispensing needle attached to the nozzle of the atomizer 6, and is sent as a digital electrical signal by the AD converter 6. The sprayer 6 is also equipped with an adhesive controller AO7 that can control the amount of spray by varying the nozzle opening using an electromagnetic solenoid.

The transfer mechanism 8 includes a heating roller 9, a support stand 10, a main heater 11, and a sub-heater 12.

The heating roller 9 is driven by a motor (not shown), and the transfer speed V depends on the speed of the N plate. This transfer speed V is detected by a speed sensor VS13 which is an electromagnetic speed detector, and is sent as a digital electric signal by an AD converter 14. Further, a speed controller V015 based on SaR control is attached to the motor that is the drive source for the heating roller 9.

The main heater 11 applies heat to the heating roller 9, and the sub-heater 12 controls the surface of the heating roller 9 to have a uniform temperature. The main heater 11 controls the temperature T during transfer. This transfer temperature T is detected by a temperature sensor TS16 using a thermocouple thermometer, and is sent as a digital electric signal by an AD converter 17. Furthermore, the main heater 11 is equipped with a temperature controller T018 based on SOR control.

By the way, the transfer sheet 19 is passed over a rack between a plurality of support rollers 20 and arranged in a curved line between the n1 heating roller 9 and the support stand 10.

The above-mentioned support stand 10 is provided between the feed conveyor 2a and the take-out conveyor 2b, and when the soap 1 is fed, it is pressed from below against the heating roller 9 with the transfer sheet 19 in between. There is. This support table 8 allows the pressure P during transfer to be applied to the right side. This transfer pressure P is detected by a pressure sensor PS21 using a piezoelectric element. The AD converter 22 sends the signal as a digital electrical signal. Further, a pressure controller PO26 is attached to the support base 10, which can control the hydraulic pressure of the pump via a solenoid valve or the like.

By such thermocompression bonding, the printing layer is transferred from the transfer sheet 19 to the soap 1, and the soap 1 is sent to the take-out conveyor 2b together with the transfer sheet 19 by the (b) transmission force of the heating roller 9. . Further, the winding roller 24 at the end of the transfer sheet 19 and the delivery roller 225 at the start end are also rotated in conjunction with the downward movement of the support base 10 so as to wind up and send out the n1 transfer sheet 19.

Now, in this embodiment, the tension detection means 26 is the differential transformer 2.
6, the support roller 20 on the winding side of the transfer sheet 19
, 20 and hang it here.
ing. The tension applied to the transfer sheet I-19 is constantly converted into an electric waveform signal and sent out. This electric waveform signal is converted into a digital signal by an AD converter 27 and sent out as an instantaneous tension value F.

In this embodiment, the storage means 28 is a RAM 28, in which a large number of good tension values at temperatures T, etc. of n-fn are manually stored in advance as data, and the average value (hereinafter referred to as the best tension value FQ) is stored. It is now possible to output only In addition, this RAM 28 includes each of the sensors 5 and 16 described above.
, 18.21 The adhesive electric value A1 transfer speed value v1 transfer temperature value T1 transfer pressure value P and the instantaneous tension value F from the differential transformer 26 are the latest ones or are temporarily changed. It is now banked.

The best tension value FQ is temperature T1 pressure pressure 1 speed VS contact agent vibration A
These T, P, V
, A constantly fluctuates depending on the instantaneous values of A.

In this embodiment, the setting means 29 is a PIA, which determines whether the best tension value FQ is acceptable within a range that does not produce defective products.
1 Normally, it is input as a percentage parameter of the best tension value FO, and n1 is output as a value α obtained by adding a percentage to FQ. This percentage is determined in advance through experiments, etc., and can be changed manually. Also this P1.
A 29 is the maximum temperature T1 pressure pressure 1 speed v1 viewing agent A maximum value Tmax % Pmaz % Vmax
% Amax and minimum mTm1n, """'"m
1B % Am1n is also input and can be manually entered. The maximum value 'I'maz... and the minimum value @ii Tm1n... are determined by experiments and the like depending on fN.

The control means 60 includes 0PU61, ROM62, the above-mentioned temperature controller TO18, and pressure controller pc'1.
6. Speed controller vc15, adhesive controller A
O7, DA converter 66, 34°35.56.

opu31 is the data T, P, and V described above.

A, F, Fo, α+ Trnax + Tm1n,”
n+ax + P+nin r v-,, 1%In +
The VC is configured to perform a calculation process and output 4++ax + Am1n according to a program stored in the ROM 62 (see FIG. 4). The signals (fT + fP + fVr fA) output from 0PU51 become analog signals via DA converters 66.54 and 35.66, respectively, and are respectively sent to the above-mentioned temperature controller To 18,
Pressure controller PO26, speed controller ■.

15 and adhesive controller AO7 [applied, temperature T
1 pressure P1 speed V and adhesive lid A are varied.

Next, the transfer control method and the operation of the transfer control device will be explained regarding the embodiment completed as described above.

Soap 1 and conveyor 2a''r: When the soap is sent, a coating agent is applied onto the upper surface of the stone (J1) by the sprayer 6.

This application may be done by paulownia hair coating or roller coating. In the case of transferring soap, food packaging containers, clothing, etc., this layering agent must have no writing properties and must have a ηC. Next, in order to lower the heat absorption rate of the soap 1 to the transferred NU, the soap is warmed slightly by the bleed heater 4, but if thermoplastic resin is used as the adhesive, it can also be prevented from curing. .

When the soap 1 is sent from the feeding conveyor 2a to the support stand 10, the support stand 10 moves upward and transfers the soap 1 between the soap 1 and the transfer sheet 1.
9 and press it against the heating roller 9. This support stand 1
The downward movement of 0 may be hydraulic, pneumatic, mechanical, such as a rank pinion.

Further, the heating roller 9 may be rotated by a motor such as an internal combustion engine. Since the heating roller 9 is rotating, the soap 1 is transferred to the soap 1 at the time of hooking and sent to the take-out container 72b. At this time, the tension value F of the transfer sheet 19 is always detected by the differential transformer 26, and if the transfer state is not good, the soap 1 will strongly impact the transfer sheet 19, and a large tension value F will be detected by the differential transformer 26. Or i! 1vc4LA copying sheet 19 becomes weakly fed, and a small tension value FIJ'- is detected. And A for the downward movement of the support stand 10! As the transfer sheet 19 moves, the take-up roller 24 and delivery roller 25 of the transfer sheet 19 also rotate, so an extra force is fed to the transfer sheet 19 by 1 J/glass 1 frame, and therefore, an extra tension is applied to the differential transformer 26. K is set so that it does not become D'.

In this case, the tension value P・
The previous tension value in the RAM 213 is erased via 0PU5j and a new one is filled in. In this way, the value of the tension value F changes every - times of transfer. Then, as shown in FIG. 4, the 0PU51 extracts the tension 111iF' from this RAM 28 and calculates the tension difference f from the best tension value Fo.
is taken and compared to see if it is within the allowable value α. If it is within α, there is no need to control the temperature T, etc., so the process returns to the original state and repeats the same operation. At this time, if f is greater than or equal to α, there is a risk that the product will be defective, so either the temperature T1, the pressure, the speed (2), or the amount of nursing care A must be controlled. Therefore, the maximum value Tm&X r Pm@X
+v1. la! , Am8x and minimum fll'f Tm1
n + P + in r Vm4n * 'Man's comparison (each temperature T1 pressure P1 series [V% whether the adhesive mA is being scraped or not) and the song 2 ratio is softened to find the cause and where it is.And If the cause of the discrepancy is determined, save the tension value f, and if the cause is at 011 degrees, set it as fT.
This fT is added to the temperature controller '+' o IB via the DA Humbataro 6, and the 1M of the main heater 11 is
Change the degree. [Other pressure, speed, contact offshore] If there is a particular cause, set f to fP + fV + fA and output in the same way to the respective controllers PO26, vC15, Ac.
Control 1. In this way, these [σ] operations are continued until the force difference f falls within the tolerance α. In this way, the tension of the transfer sheet 19 lowers the temperature F! L't'''=Pressure PX Velocity v1 Sanitizer Mouse A can be quickly controlled.

In this case, the pressure VC flashes P compared to the other of the maximum value Trn, z... and the minimum value TmIn. 0 is thicker P+
If r++ゎ is made small, the tension F can be controlled by pressure and the specific gravity will increase compared to others, and if the temperature is changed in the same way, the tension F' will be increased at a good temperature.
? i: The specific gravity to be controlled is increased compared to others, and these can be arbitrarily varied manually by the operator.

If the cause cannot be determined, turn off the '1 source, stop the transfer, and check the situation.The maximum value Tm, ! Temple, minimum T.

You should set the In equality tolerance α more strictly and re-examine whether it is within the limit.

Note that the output signals fT, fP, fv, and fA are expressed as N'X11'+ (fT=00, fp201%
fV = 10, fA = 11), so processing is performed within the CPU 61 so that it is not interposed in the respective controllers 18, 26, 15, 7 in FIG. Also fT
When the value of +fP... is positive, the temperature T1 and the pressure P decrease, the speed {circle around (2)} continues, and the adhesive grave A decreases, and when it is negative, it changes in the opposite way.

In the above example, the transfer control was performed on soap, which has a thickness variation of around 5%, and is the most difficult material to transfer due to its surface-active effect. Control can be performed more easily with a transfer member such as the following. In addition, since it is electrically controlled, it has a quick response and can be used in cases where 60 or more pieces are produced per minute. However, even in cases where adhesiveness is limited to those with weak adhesive properties, electrical control can be used to adequately cope with the problem. In addition, since the temperature T1 pressure P1 degree (2) and the adhesive agent A are comprehensively controlled, the mutual balance of these IRA degrees etc. can also be automatically controlled.

Note that the present invention can also be implemented in the following manner.

(1n Tanise>v (TS, PS, VS, AS) 16+
21.16.5 may be omitted, and the temperature, pressure, speed, and last bite 14 may be sequentially detected using only the tension detection means 26. In this case, the maximum tension value 1i'Q is the temperature I! It does not change due to 8L etc. and is always constant. This can be achieved by controlling transcription using a simpler circuit.

Alternatively, the temperature may be increased, the pressure may be increased, the speed may be increased, and the amount of acetic agent may be increased. In that case, the calculation program will be simpler.

(3) m layer agent sensor AS5, ma se> VS16,
Temperature sensor TS16, force sensor PS214, differential pressure current H1'', electromagnetic speed output, thermoelectric temperature H1'', piezoelectric element as well as other 'm magnetic current*at or valley flow rat meter Other devices such as generator flow detectors or photoelectric power detectors, resistance temperature phase or expansion thermometers, force balance expansion pressure transducers or open-loop pressure transducers may also be used. Yo<
, the effect of 1M1 can be changed.

(4) The storage means RAM28 and the setting means PIA29 are separate from the input data (α) during the transfer operation.

Tm1n p Tmaz etc.).
PLA29'f: abbreviated as storage means and setting means RA
M 28 may be grouped together.

(5) DA converter 55, 34°55 of control means 60
．． 36 is omitted and each controller 7.15 is placed in OFRO 61.
, 18.26 may be directly connected.

(6) The amount of adhesive A may be controlled by controlling the degree of plasticization using the preheater 4. However, in this case, the adhesive must be a thermoelectric resin.

(7) Also, the W-F volume value α may be changed by fluctuations in temperature T1 pressure P1 speed V1 adhesive mA. In this case too, do it in advance! α for each case is α
The next step is to decide on the value of and create a data bank.

(8) Each of the controllers 1B, 26.1, and 26.1 may be of an electronic or pneumatic type, such as an A on/off regulator or a pIDU moderator, in addition to those shown in the embodiment.

Even with such a device, the effect similar to that of this embodiment may be deteriorated.

As described above, in the present invention, transfer control is performed by the tension detection means of the transfer sheet, so except for +m1, which individually detects and controls temperature, pressure, speed, and adhesive amount, one detection means is used to control the transfer. Therefore, it has excellent effects, such as eliminating the need for extra time for control and allowing Taisha student MK to respond immediately.

Furthermore, in the present invention, since the transcription is controlled by means of setting means, memory hand, and fliij control means, it is possible to respond immediately to changes in the transfer situation that change from moment to moment, and large-scale production is possible. It also has the effect of producing quality products and reducing costs.

[Brief explanation of the drawing]

FIG. 1 is an overall view showing one embodiment of the present invention. 2 and 3 are electrical circuit diagrams and block diagrams of the main parts. FIG. 4 is a flowchart showing the same operation. 1: Material to be transferred (soap) 6: Lie! 1 device 5: Adhesive sensor (AS) 7: Adhesive controller (AO) 8:
Transfer machine m9: m1rjl''+roller 10: support stand 11: main heater 12:
Sub heater 13: Speed sensor (v 5) 1
5: Speed controller ff0) 16: Sea 5>su (T 5) 18: Temperature controller (TO)
19: Transfer sheet 21: Pressure sensor (PSI)
23: Pressure controller (po) 26: Tension detection means (
differential transformer) 28: Storage means (RAM) 29: Setting means (PL
A) 60: Control means 31: CIPtr32
:ROM A: Layer lid value V: Transfer speed value T: Humiliation temperature value P: Transfer pressure value
F Temporary tension value Fil: Best tension value α: if
1″ volume value f: tension difference value

Claims (1)

[Claims] 1. In a transfer mechanism (8) that performs transfer from one transfer sheet α to a transfer member (1), the tension value (F) of the transfer sheet α0 at every instant is detected, and the tension value n Calculate the difference (f) between the best tension value (Fo) and the tension value (71), compare this difference (fJ and tolerance μ) with 2, and calculate the difference (from the middle to the tolerance value).
f] is large, this difference (f) is output and the temperature (T), pressure (P), speed (v) or adhesive type (4
) during the summer, and the tension (F') at the time of transfer was adjusted to the best tension value (F
o), thereby preventing the transfer member (1) from being strongly or weakly attached to the transfer sheet (19).
Method. 2. In the transfer mechanism (8) that transfers from the transfer sheet Q9 to the transferred member (1), the tension value of the transfer sheet (transfer sheet) (191) (
Tension detection means Qθ for detecting F), storage means for storing in advance the tension value co) of the transfer sheet (force 19) in the best state, and tension detection means Qθ for detecting the tension value (1”) in the best state.
0) to set the allowable tension value), and the tension 1 side (
'tM1 degree (T) related to the transfer of the transfer machine fllj (8) when the w tolerance value for these best values is exceeded.
The tension at the time of transfer of the transfer sheet 09 is set to the best tension value (1
A transfer i6 control device characterized in that it is provided with a control means ω for returning to 1i′Φ to prevent the transfer sheet (19) from becoming too strong or too weak from being attached to the transferred part (υ). .