JPS6110458A - Ink supply circulator in printing machine for tablet or the like - Google Patents

Abstract

PURPOSE:To make the always suitable keeping of the state of ink possible, by a method wherein each fixed amount of the solvent in a solvent tank is automatically supplied into the agitation tank having a capacity sufficiently larger than that of an ink pan and the amount of shortage caused by the vaporization of solvent is supplemented. CONSTITUTION:The tablet which is conveyed by being attracted to a supply drum is transferred with the transfer roller 5 to which ink is supplied from an ink pan 60 via a design roller 4. The ink in this ink pan 60 is circulated into the agitation tank 62 which is agitated with agitation vanes 68, having a capacity sufficiently larger than that of the pan. Then, a dilution pump 65 is driven at a fixed time interval with a timer 77 and solvent is supplied to the agitation tank 62 from a solvent tank 63 for a fixed time and agitated. Thus, the loss content caused by the vaporization of solvent is supplemented. At that time, because the capacity of the agitation tank 62 is sufficiently large, the stable composition of ink can be kept and the generation or the like of printing irregularities and bleeding can be prevented.

Description

[Detailed description of the invention]

<Field of Application in Industry> The present invention relates to an ink supply circulation device in a printing machine for tablets, etc. <Prior Art> Conventionally, in printing machines for tablets and the like, replenishment of solvent for printing ink after solvent volatilization has been carried out by an operator directly replenishing an appropriate amount of solvent into an ink pan at time intervals similar to that of a furnace. However, there were the following problems. (2) The dilution interval and dilution amount are not constant, which makes it difficult to stably maintain the viscosity of the printing ink at an appropriate value. (2) In addition, the viscosity of printing ink changes significantly before and after dilution. - Stirring in the ink pan is poor, resulting in the solid content of the ink components entering the ink pan or causing printing smearing. ■Since the solvent is added directly to the ink pan, it is necessary to stop printing and thoroughly stir (↑) during that time.This reduces efficiency.■In addition, the ink dilution liquid scatters during the dilution process, making it difficult to handle.ra ) If the printing material is a tablet or the like in 44, set the ink condition to XS'+°ll4iI! If L7 is not held in I, printing defects may occur due to powder such as horns, tablets, etc. being on the transfer roller and design l'l-a. , print ink status -I
It is necessary to maintain the ink in an optimum state. <Object of the Invention> The present invention eliminates all the drawbacks of the conventional ink by 1φ: and makes it possible to always maintain the ink state in an appropriate state. The purpose of the present invention is to provide an ink supply and circulation device that can be simplified and unmanned to improve efficiency. -1- An ink supply circulation device for a printing machine for tablets, etc., which supplies the ink to a transfer roller and prints on a substrate such as a tablet supplied by the transfer roller, A stirring tank 11 with a capacity sufficiently larger than the ink pan's capacity is provided separately from the ink pan, and a separate solvent tank is provided for the stirring tank. The ink is stirred (one ink is added to the ink pan), and the solvent in the solvent tank is automatically supplied in a fixed amount at a time (supplied to the stirring tank to prevent shortages due to evaporation of the solvent in the stirring tank). This is an ink supply circulation device for a printing machine for tablets, etc., which is characterized in that it supplements the amount of ink supply. Fig. 2 is a front view schematically showing the printing machine for tablets, etc. Fig. 3 is a plan view showing the moving device for the cleaning cloth belt, and Fig. 4 is a front view without showing the moving device for the cleaning cloth belt. , FIG. 5 is a perspective view of the drying device, FIG.
The figure is a side view of the supply 1-ram unit, Figure 8 is an Ifi side view showing the mechanical parts of the transfer roller and design roller, Figure 9 is a front view of the transfer 1/colori 1) displacement device, and Figure 10 is a front view of the transfer roller and design roller mechanism. 3 is a timing chart of the operation of the device. In FIG. 1, reference numeral 4 denotes a design roller of the printing press, which partially fills the ink reservoir 3 in the ink pan 60 and supplies ink to the transfer roller 5. The transfer roller 11-ra 5 is a roller that prints on the printing material. An ink supply circulation device according to the present invention is installed in the ink pan 60. Possible. 1 stirring tank 6 in 1 unit case 61
2 and a solvent tank 63 are provided. The stirring tank 62 has a capacity IJ
is sufficiently larger than the capacity of the ink pan 60. Stir! 1! A circulation pump 64° and a dilution pump 65 are provided for the tank 62° and the solvent tank 63, respectively. Circulation pump 64 is 1 sense 11! The ink in the tank 63 is supplied to the ink pan 60 through the ink supply pipe 66.
Returns to the stirring tank 62. A stirring blade 68 is installed in the stirring tank 62 and rotated by a motor 69. 69
is the exhaust pipe, and the reading on the IJll air gauge 70 is the specified J? When it reaches the top, the volatilized solvent is discharged from the stirring tank 62. The dilution pump 65 pumps the solvent (((
The solvent is supplied to the stirring tank 62 through the supply pipe 71. 72 is a power switch, and 73 is an agitation IT motor inch. 75 is a dilution pump switch, 76 is a circulation T51 pump switch, and 77 is a timer for the circulation pump 64 and the dilution pump 65. Circulation of the ink adjusted in the stirring tank 62 to the ink pan 60 and supply of the solvent from the solvent tank 63 to the stirring tank 62 are set by a timer 77. That is, in principle, circulation between the stirring tank 62 and the ink pan 60 is always performed, but in this embodiment, one timer 77 is used, so the solvent is not supplied to the stirring tank 62 (It The circulation of the ink is stopped only for a certain period of time.The timing of supplying the solvent and the type of ink depend on the type of ink.Depending on the type of solvent, the amount of decrease due to solvent volatilization is compensated for at regular intervals.Next. In the example shown, one cycle is 16 seconds, the ink is circulated for 12 seconds, and the solvent is supplied in 4 seconds.Actually, following the example, the first step is to mix the solvent into the ink liquid in advance and check the viscosity. 6 suitable for printing
0 Cl) #Il to S! Stir the prepared ink to 2p capacity (put 1p into one tank 62 to melt it for the first time. 9G of this initial solution, 300cc of ink bottle that costs 60 yen per ink pan, and several 10cc of 111 printing♀) Therefore, it is possible to maintain the 11 composition as an essentially stable component against external additions such as a solvent. n-sitanol was used.The operations were to check the solvent in the solvent tank 63, and to
Turn on the motor switch 74, turn on the motor switch 74, and turn on the stirring polyurethane 73 at 1-po(, first, +i'!+ speed and rotate it sufficiently. Stir.It is the first time to make this 1. Connect the ink supply pipe 66 and the flow pipe 67 to the ink pan 60.The preparation is complete.Next, dilute Bombuno and Inochia 5. and turn on the circulation pump inch 76. This will start the ink supply and circulation operation. Lower the fit 114 poly7.-J and 73 to a stable low speed rotation of 1+1' (10 times/min). , After confirming the overflow from the ink pan 60 (r(f), printing is started. The (Il'i ring ♀ct of printing ink: 240C for 12 seconds. Of course, MI'79 of 1 and 2 is i; !'i ”'l can be determined. - Force, solvent I'tl l'l' tank [i 1 to 2
The supply was carried out for 4 seconds at 12 second intervals, and the supply amount per 4 seconds was about 0.23 cc. By replenishing the solvent as shown below, the viscosity of the ink can be maintained at 60±5 r.
could be maintained at ps. In other words, by knowing in advance the amount of volatilization per medium time, the amount of solvent to be replenished can be determined. So, 0.23cc was supplied every 12 minutes.c
bl. Therefore, it takes 4 seconds for the dilution pump 65 used in this embodiment to supply 0.23C (:).As mentioned above, in this embodiment, one timer 77 is used. Since the ink circulation and solvent supply are controlled by 7, the solvent (during one supply, the ink ih
The t-ring was to stop, but the ink full'
i If I'XI has to be skipped 17 during that time, it will be 2 (not +l+ at the exit, but about that (if the river is 111, stop 1.
(4) It seems that there is no problem. My son's 31, UG,', this ink (1 (supply + A'i)
I'4? Fit: f? 'e i, l', f! Just like the first one, I took 1 IZt of Xun, and the
Demon, become. The printing press and its cleaning device are shown in Figure 2 and below. Cleaning devices, etc. are essential for automating printing presses in conjunction with the ink supply circulation device described in -! It is a Bj device. In FIG. 2, 1 is a control device, and 2 is a printing section. Mark L11: l A design roll 4 that supplies printing ink from an ink reservoir 3, a transfer roller 5. This is done directly by the feed 1 ram 6. That is, after passing through the primary hopper 7 and the secondary hopper 8, the tablets 9 as printing material are delivered to the supply drum 6.
The ink is transferred at the FD contact position with the transfer roller 5, and is deposited on the receiving portion 10. The transfer roller 5 can be moved between a printing section W indicated by a two-dot chain line, that is, a position in contact with both the design roller 4 and the supply drum 6, and a cleaning position indicated by a solid line, that is, a position separated from both of them 4.6. Can be done. The transfer roller 5 is cleaned (
☆ The transfer surface will be cleaned when placed. Transfer J: Cleaning of a-ra 5 is done using cleaning part 4.
．． Transfer roller 411 is transferred by pressing it against transfer roller 5. Transfer roller 5 rotates while cleaning member 1
1 and remove the dirt. As the cleaning member 11, in addition to a cloth member, a member such as a sponge-like member that holds the solvent appropriately can be used. This cleaning portion (A11) can move between a state in which it is pressed against the surface of the transfer roller 5 (a small mark with a solid line) and a state in which it is oriented away from the transfer roller 5 (a mark with a two-dot chain line). In the case of the example, it is set to move forward and backward in a straight line, but
For example, by swiping one eye, the image appears on the transfer roller 5.
It may also be possible to take 4Q'M that advances and retreats. In this embodiment, the cleaning member 11 is configured as a 4I heald. The cloth shell 1 can be constructed in the form of, for example, a core made of twill weave of natural fibers or synthetic resin fibers, and a cotton gauze layered along one side of the core. The core/ruto gives strength to the cloth health 1, and
It has the role of allowing the solvent sprayed from the 4R solvent supply nostle 12 to penetrate into the gauze side that is in contact with the transfer roller 5. Therefore, any material that fulfills these two roles can be used as a core helmet. Furthermore, the gauze holds the solvent and comes into contact with the transfer roller without damaging the roller, and has the role of wiping away any smudges or slag. Therefore, other +4 materials that can play this role can be used in place of gauze. 13 is an air cylinder for moving the cleaning member 11 forward and backward, and 14 is an air cylinder for changing the position of the transfer roller 5. The control device 1 is for controlling the 1ift operation timing of each device 9 mechanism described in 1-in accordance with a fixed program. Automatic 9 manual changeover switch +5. Cleaning operation and? +1+l- switch 161 An IJe switch 17 is provided to select the operation of each device in manual mode. Details of the moving device for the cleaning member 11 are shown in FIGS. 31M and 4. A holding frame 19, which is attached integrally with the conia cylinder 13 and its piston rod 1B, and which moves together with the holding frame 19,
It has a guide 20 for sliding the frame, and pressurized air is introduced into and discharged from the air cylinder 13 by opening and closing a solenoid valve 21, as shown in FIG. 2, to move the piston rod 18 forward and backward. The air cylinder 13 blows air onto the main body frame 22. The holding frame 19 has several tensioning rollers 23, 24, 2 for tensioning the cloth, which is the cleaning member 11, under tension.
5 is provided with a bearing C. Cloth heald 11

[
The roller 23, 24, and 25 are passed to Il1, and the - side contacts the transfer row 75. The rollers 24, 25 are constituted by eccentric rollers, and the position of the rollers 24, 25 is changed each time the shafts 24a, 25a are rotated, and the degree of tension on the cloth can be adjusted every 1♂. This shaft 24
a, 25. It; through it! Rotation j7, 1, and more are in the middle of the phase. l'l-la 24.25 is axis 2
4;i,','5a can be rotated freely with center C.-force,n-:ノ'25 II/!1
Shifting the position of Hell 111 by small j2] <i'J
: The difference is lV. zu, <(wal9, B -:) 23 is its axis 238^ integrally constructed 4'1, hl+:! 3; 3 for + rotation
1. The illusion "?-u2.゛) rotates. Gonosuke:' 3
a ltKurano Senbokutsu 2 In the ri, there is a small figure 4 (I・
The shaft of the pinion 27 is connected to the shaft of the pinion 27 through the cover gear.
There are 1. This pinion 27 meshes with a rank 28 fixed to the main body foot 22. Now, when screws I so 1, I7 and de 18 move back, holding frame 1
9↑I
8y 11#lj combination・) The rotation of the vinyl spring 27 rotates the support 23a via the clutch・υ, and the roller 2 gets caught in this.
3 is times + r: r..., the cloth/\photo 11 moves by that amount. On the other hand, if Bis1-Nrono 118 advances, the clutch will be activated in the evening. , h, only the pinion 27 idles. In addition, - no j direction/) :, ', ,, 1,000, for example, Kokichi is using a cam clutch that interposes ζr between the inner ring and the outer ring. 29 +: t spelling With tension 1゛/ha energized by ! 〒1'l Frame 9 of frame 19 is taken out, and while holding the cloth bell l l+ with a suitable holder, transfer it to between 1'l -"r ', 11.
Koshii・1 keru supplement 1! Nazu It. M'; W)l I (1 go rou y' 1.
Supply nozzle 12 (holding frame 19t,: IIV 1.11
1 corresponds to (1 (salary no. monthly interest 2 is the same as retention frame 19 t7J'
! :Support r+, 1,) ζ, Nishi 7' (Original, Solvent rack 31 (No. 21 = 'i No. + 14j) to lower rack 32
is relayed, and the solvent is supplied from the cloth bell i-11 from the supply nozzle 12.
Supply drops F to . The injection time is controlled by the control device 1. Is the drying device a dryer? -Blow A, 1 slot 33. Roll 33 1): +:+
- Dry air is installed around Lf 5 (not shown).
14 From the supply source, spray to the control device at the timings of ;Le-,','jl to the rolling roller 5A'-+f+i. , or one (11 to 7141") γ-position C two degrees (6th
Figure, Figure 7C explanation. Actual IA (Example: The printed material is a lock/
I11! At 1, lV and I102j match. (1 (salary 1
-・J, [j's (■old-11 ε) a large number of tablets 11) °φj river ゛ form < 44 2, hole 4,
A vacuum is created at the bottom of 1 with connection 1-. -Nol", rotation?, O(supply 1"nJ)
A fixed valve handle 46 is brought into close contact with -6. (The vacuum oil 1/345 is connected to the vacuum pocket 47 formed at the F8 contact with the supply 1 ram 6 of the valve handling 46. The vacuum pocket 47 is divided into a plurality of parts. The vacuum pocket 47 maintains a vacuum of 1/345 vacuum oil during the rotation of the feed tram 6.
8 and pump the vacuum with a vacuum pump (not shown). Fitting hole of tram 6 for supplying tablets 9/l 4 (,,
The control of the two supplies is controlled by the control device 1, 1, -
) ζ-・Open and close the solenoid valve 49 at fixed timing7.
To 21', ;l; tablet 9 from collar 8 to drum 6-
Suction to L'・("?- Vacuum pocket 47 in the envious position
(Continue to apply suction from the vacuum pump to the vacuum chamber shown in Figures 6 and 7). Φpe'j'l'l-'r 5 to printing position and cleaning position 11th λa, 1.1th to 161st 8th
Explanation in Figure 9. The shaft 5.I is fixed to the shaft 5.I, and the shaft 5a is mounted on the eccentric bearing j) 4. Also, this eccentric shaft -!,,: 3 d ll Zorake, 1・Bearing 35
It is supported by and rotated (monkey, 1,゛). The rotation of the transfer roller 5 is transmitted from the drive shaft 4a of the pre-input roller 4 to the shaft 5a of the transfer roller 5 via the gear 1-36.37. The air cylinder 14 is rotatably attached to the air cylinder mounting base 38 fixed to the main body 22 with a pin 39, and is fixed to the piston rod center bearing 34 of the air cylinder nodder 14. A lever 41 and a pin 42 connect the lever 41 and the pin 42 so that they can rotate freely.The air cylinder 14 is connected to a solenoid valve 43 (
When air is supplied by opening and closing the piston rod 40 (see Fig. 2), the piston rod 40 advances and retreats, causing the eccentric bearing 34 to rotate by that amount via the relay 41, and the transfer roller shaft 5a
The solid line in the figure shows J cleaning 1''! position and one point tl'1
The print position changes to the one shown by the line. The timing of this switching is controlled by the control device Iv1. Regarding the control of the operation timing of each device by the control device (see Figure 10), the timing control by the control device 1 is as follows:
), the result is II), - and (nkiru). Zunawara, as shown in the 101st test 1 -4, 1), -) i' is ken, II II is 1 → J il ζ, 2. '(, 1 cycle is repeated, 1 cycle is 'I', 1 cycle is tJ printing town, cleaning town and solenoid tl!).
ih l ;! + 81'vi I'1)lll1 between tie-i"(: l'car1!ftoshite1'?<.4
'I'll, 1, Rubu II Gutsuno, 11 Yuki 11' is +l I'll printed 44・Fr1.4 (111 Article f] 1, 1, Article A'1) j7” (Settings i'1.
? ,)-t'-ζ/, but in the example and t7 shown in FIG. Now, turn on the main switch shown in the figure, turn on the design r1-ra4. Transfer "1-ra5. Rotate the supply drum 61!", and switch the changeover switch 15 to automatic. , when the cleaning activation/stop switch 16 is activated, the solenoid valve 43 is activated and the air cylinder 1 is activated.
4, the transfer roller 5 is switched from the printing position to the cleaning position. At the same time, the pump 32 operates on the cloth heald 11 which is in the backward state, and drips the solvent from the supply nozzle 12 for 2 seconds. 5 i4) After that, the solenoid valve 21 is activated and the cloth heald 11 is advanced through the opening cylinder 13.
1! , I + 1 second rotation) and press it against the surface of the roller 5. 1 (l Ji+ The blade II is retracted to the 714 hole, and at the same time a drying device is created 11i1) At S/jI, drying air is sprayed from the port 33 onto the surface of the roller 5 for 15 seconds. After 15 seconds, the transfer 1'l-ra 5 is moved from the cleaning position to the transfer position and printing is possible. After 1.5 seconds, the 'rfl(4'i) valve 49 is opened and suction of the tablets 9 onto the supply drum 6 is started, and printing of the tablets 9 is started. Supply of Li agent 9 L;l: Inherited for 594.5 seconds 1, during which printing was not carried out in II).
lu 4 seconds (powder, 10 'Ij'l'1-----・5
ga kri-1, nka' (1 n; l'l' konishi sword summons). During J-, turn "i'"'y 51.1: fi
fM1 second) rein l'1-ra4 and (11 feed l'''
/ Muro t= tD tQ・l: し"c ii+. l71('I J) 4 Tal force t? j'-Jru. Kono I+'1 nonn4, 111 I/Full is 6.17.
511 N C1 So) j) Printing 1llllIji 口, l:
! 'i! 1,1. Old "b. Printed song interval i, l: +'7.51・1).・14
Cwa”rk:!+ 3(]III・ to printing fθ for lu
Culm IQ of 11? Bimei) 6: 6”9 + I, 1”
+, +, [, l Itoko J t:, /l 'j+
,. According to the inno+1-ning device described in 1- below, the rotation 'l, 'I
It is possible to automatically clean the + and - parts (l\,
In combination with the previously mentioned ink supply fl/if!7 device, the entire printing IJli can be automated. Also, cleaning can be performed reliably at a constant interval, so when printing due to variations in cleaning timing, it is possible to automate the entire printing IJli. ink stains 2
Prevents smearing and is uniform! ! It is possible to stably perform bright printing. Additionally, it is safe as there is no need to touch it with your hands. It also improves the operating rate. Injection can be performed with a new sample every time. (Senkou) 1 ink pan consists of a 1-1 configuration, and the conventional ink pan (
, 'Direct (8,11t; ￥ Q, 11 minutes! 1st replenishment was done separately from the ink pan (1 tank and solvent tank/), 1 was refilled, 1 was refilled separately. The decrease due to 1111 shots of the medium is reliably stirred at regular intervals in the solvent tank or t° I1) IFIζ' (j (Li + i L,
11] 7 November 'mouth 1" / stir and adjust the knee evenly, (:') All of the drawbacks mentioned in the ``Skills'' column are resolved 1\l'+ 'r+. According to the child's first explanation, component concentration, viscosity 1・θ1 ￥: l'l ?j當C
, knee', ij The retained ink is used for printing. In addition, all ink components and precipitates
・(21., r, l・Printing unevenness due to convenience or lack of stirring 11. It is possible to prevent stains and scratches.Furthermore, the operator is always on the equipment -゛) Replenishment of solvent 5 stirring 11 etc. It eliminates the need for 4f adjustment without having to adjust it, which saves labor! ! ! ! You can make friends. City that stops the machine when refilling solvent? 1・CJ, ilsu) 79, so increasing the efficiency of printing work is 1'J1 phase. 4.1 + l + 10) iih Explanation Figure 1 (11
The example of the investigation is the small integer 11 (pay 11111 device 0
Figure No. 1, No. 21 No. 1 is lock/Fl1, etc. printing press box 1
111i is 1ヾ1 in the city, Figure 3 is for cleaning 4
Figure 4 is a side view of 1E showing the 8-side device of cleaning cloth head 1, and Figure 5 is a side view of G.
1. A perspective view of the drying device;
FIG. 8 is a side view of the ram section, FIG. 8 is a cross-sectional view of the mechanical parts of the transfer roller and design roller, FIG. 9 is a front view of the transfer roller position switching device, and FIG. 10 is a timing chart of the operation of each device. . 4 Design roller 5 Transfer roller 10 Ink pan 62 Stirring tank 63 11g medium tank 64 - Circulation pump 65 - Dilution pump 66 Ink 4J (supply pipe 67 Overflow pipe

Claims (1)

[Claims] (1) Printing of tablets, etc. in which ink in an ink pan is supplied to a transfer roller using a design roller partially immersed in the ink, and printing is performed on a printing material such as a tablet supplied by the transfer roller. The ink supply circulation device in the machine is a stirring tank having a capacity sufficiently larger than the capacity of the ink pan, which is provided separately from the ink pan, and a solvent tank is further provided separately for the stirring tank, and the adjusting tank in the stirring tank is The ink is stirred and circulated through the ink pan, and the solvent in the solvent tank is automatically supplied in fixed amounts to the stirring tank to compensate for the lack of solvent due to volatilization in the stirring tank. Ink supply circulation device for printing machines for tablets, etc.