JP2574052Y2 - Platen device for die plate in stamp printing machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a stamp-type printing machine which can perform not only general printing such as date and time by a dot printer but also die plate printing by a rotary (rotary) die plate. More particularly, the present invention relates to a platen device for a die plate suitable for use in a stamp-type printing machine.

[0002]

2. Description of the Related Art A die plate is arranged before and after a type wheel such as a date and a time. A printing card (printing paper) is inserted between the type wheel and the type surface of the die plate, and then the solenoid is excited. The conventional stamp-type printing device, which is configured to perform engraving printing by beating with a printing hammer, is very loud due to the hitting sound of the printing hammer at the time of printing, the angle adjustment of the printing hammer and the surface of the hammer rubber. There were various problems that maintenance such as adjustment was very troublesome. Accordingly, the applicant of the present application has applied for the filing of Japanese Utility Model Application No. 2-114515, and has described a silencing type in which general printing such as date and time is performed by a dot printer, and printing of die plate characters is performed by a rotary die plate. We proposed a timestamp and succeeded in solving the above problem.

[0003]

However, when a print card is inserted in the above-described muffled time stamp, the print base plate supporting the print card is pushed up horizontally by a cam disk rotated by a motor. Because the printing surface of the print card faces the moving path of the dot printer and the rotary die plate, if the thickness of the inserted print card is different, the print surface There is a problem that the difference between the print surface and the print surface of the print card varies widely, resulting in uneven print density. To solve this problem, the cam board must be adjusted according to the thickness of the print card. Need to be replaced, which causes a problem of complicating the structure and complicating the operation. Furthermore, when performing die plate printing with a rotary die plate while transporting the print card described above, if the transport speed and the rotational speed of the die plate are different, printing will be misaligned, so that speed adjustment is very troublesome. there were.

Accordingly, a technical problem of the present invention is to print on a print card using a dot printer and a rotary die plate, and to adjust the print surface of the rotary die plate according to the thickness of the inserted print card. The purpose of the present invention is to automatically adjust the interval between the platen and the platen for a die plate so that dot printing of the same density can always be performed on a print card. Another technical problem of the present invention is that when printing a die plate with a rotary die plate while transporting a print card, the die plate printing is performed without any trouble even if the transport speed and the rotation speed of the die plate are different. That is.

[0005]

Means taken by the present invention to solve the above technical problems are as follows. Card transport means for drawing and ejecting the inserted print card, dot printer for performing general printing such as date and time on the inserted print card, and die plate printing for the print card as well A plurality of card feed roller shafts which are provided with a rotary die plate, and which rotate the above-mentioned card transport means in conjunction with a motor; and In the platen type printing machine configured by

(1) In correspondence with the rotary die plate,
A platen roller for a die plate which is always in elastic contact with the surface of the rotary die plate with a spring pressure stronger than the spring pressure applied to the driven roller shaft. (2) A guide shaft and a screw shaft are suspended from the bottom surface of a bearing plate that rotatably supports a platen roller, and the whole of the guide plate and the support base is formed to have a substantially mountain-shaped cross section. A leaf spring having a through hole for inserting the shaft and the screw shaft is interposed, and an insertion hole for inserting the guide shaft and the screw shaft is also formed on the upper surface of the support base, and the insertion hole is inserted. Attach a nut to adjust the spring pressure of the leaf spring to the lower end of the screw shaft.

[0007]

The above means operates as follows. The element (1) performs die plate printing by elastically contacting a platen roller with a rotary die plate with spring pressure, so that clear printing can always be performed irrespective of the thickness of a print card and the rotary die plate can be printed. The spring pressure of the platen roller elastically contacting the die plate is set stronger than the spring pressure of the driven roller shaft elastically contacting the card feed roller shaft, that is, the clamping force between the roller shafts for transporting the print card. Therefore, even if there is a deviation between the transport speed of the print card due to the rotation of each roller shaft and the speed of the die plate printing due to the rotation of the rotary die plate, the die plate printing is strongly repelled by the platen roller. It is possible to perform printing at a set speed without being affected by the transport speed due to force, thereby preventing printing deviation.

In the element (2), the platen roller can be always uniformly pressed against the type surface of the rotary die plate by the guide shaft while being guided by the guide shaft. In addition to being able to print evenly and sharply, the thickness of the print card is affected by adjusting the nut to adjust the strength appropriately according to the thickness of the print card using the spring pressure of the leaf spring. It is possible to always print a clear die plate type without any. As described above, the technical problems described above can be solved by the above means, and the problems of the conventional technology can be solved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a platen device for a die plate in a stamp-type printing machine according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a block diagram showing an example of a stamp-type printing machine that implements a platen device for a die plate according to the present invention. And a lower table 1B in which a platen, a pressing roller shaft and the like, which will be described later, are incorporated, and a print card (printing paper) P is provided between the upper table 1A and the lower table 1B.
C (see FIGS. 3 and 4), the print card PC is inserted into the transport passage as shown by an arrow from a guide table 2 provided in front of the lower base 1B, and after printing, this guide is again provided. It is configured to be sent back to the platform 2.

Reference numerals 3 and 4 denote a first sensor and a second sensor provided at a distance from the entrance of the transport path and a little inside the entrance. When the detection is detected, the card feed motor 8M (stepping motor) is turned on to start the retraction of the print card PC, and the second sensor 4 detects the transported print card P
When the leading end of C is detected, a counter (not shown) for counting the card feed amount (conveyance distance) is turned on to start counting the feed amount.

Reference numerals 5, 6, and 7 denote card feed roller shafts which are provided on the upper surface side of the transport path at an interval in the front-rear direction. The drive pulley 8 of the card feed motor 8M,
A transport belt 9 formed endlessly is stretched over these roller shafts 5, 6, and 7.
Driven roller shafts 10, 11, 1 installed opposite to 6, 7
2 and a print card PC inserted between the transfer belts 9 described above, the card is conveyed by sandwiching the print card PC from above and below. When the drive pulley 8 is rotated in the counterclockwise direction in FIG. The card PC is pulled in and conveyed in the direction of arrow F shown in FIG. 3, and when the drive pulley 8 rotates clockwise in FIG.
And is conveyed in the direction of arrow B shown in FIG.

Reference numeral 13 denotes a printer base on which a dot printer 13P is mounted. The printer base is movably mounted on a guide shaft 13G mounted on the upper base 1A so as to be orthogonal to the transport direction of the print card PC in the horizontal direction. Have been
The printer operating belt 15 is a printer moving motor 15.
When the printer card 13 is rotated by the drive of the printer M, the printer base 13 moves and the print card P to which the dot printer 13P has been conveyed.
3 and 4, a general printing TP such as a date and a time as shown in FIGS. 3 and 4 is performed with the platen 14P.
Is a mechanism for returning the dot printer 13P to the home position by reverse rotation of.

Reference numeral 14 denotes a platen table on which the above-described platen 14P is mounted. The front and rear ends of the platen table 14 have a substantially U-shaped cross section for holding the front and rear driven roller shafts 10 and 12 rotatably, respectively. Hanging portions 14a, 1
4b, the platen 14P is provided on the upper surface of the platen table 14 laid between the front and rear driven roller shafts 10 and 12 so as to face the printer head 13F of the dot printer 13P. ing.

Further, 14c and 14d are within the respective intervals of the above-mentioned three driven roller shafts 10, 11, and 12 which are erected up and down between frames (not shown) of the lower base 1B, respectively. Fixed pins 14c, 1 that are located slightly above the line connecting the bottom surfaces of the roller shafts 10, 11, 12 and protrude from the frame of the lower base 1B.
One spring 14 formed in a linear shape is provided on the upper surface side of 4d.
S, and the left and right sides thereof are bent downward against elasticity, respectively, and the upper surface of the downwardly bent spring 14S is elastically contacted with the bottom surface of each of the driven roller shafts 10, 11, 12. , Each driven roller shaft 10, 11,
12 is pushed up in the direction of the opposing card feed roller shafts 5, 6, 7 so that the respective roller shafts 10 and 5, 11 and 6, 12 and 7
Is maintained at, for example, about 0.4 to 0.5 mm, which is slightly smaller than the thickness of the print card PC, and the distance between the platen 14P and the printer head 13F is also, for example, about 0.4 to 0.5 mm. It is a mechanism to keep it.

Reference numeral 16 denotes a rotary die plate having a die plate type (not shown) formed on the peripheral surface thereof. The die plate 16 is provided on a fixed base 16F attached to the upper base 1A so as to cross the card transport passage. Presses a die plate type character formed on the peripheral surface while rotating by a drive motor 16M (see FIG. 2) onto the upper surface of the printing card PC being conveyed, and prints the die plate printing as shown in FIG. Although it is a mechanism for performing DP, it is always stopped at a position where a flank (not shown) cut out on the peripheral surface faces the transport path, and the die plate type is printed on the print card PC being transported. It is configured not to touch.

FIG. 2 is a block diagram showing the electrical configuration of the stamp-type printing machine described above. In FIG. 2, reference numeral 30 denotes a control unit mainly composed of a CPU, and 31 denotes a position of a general print TP with respect to a print card PC. A storage unit (ROM) storing various system programs such as the contents or the number of times of printing and the position of the die plate printing DP is shown in the control unit 30 described above. First and second sensors 3 and 4, a card feed motor 8M,
A die plate driving motor 16M, a printer 13P, a printer moving motor 15M, a sensor 25 for detecting the home position of the rotary die plate 16 are connected, and a clock circuit 22 for transmitting a reference clock signal, and the dot printer 13P And a means 32 for setting the printing position of the general printing TP by the rotary die plate 16 and the printing position of the die plate printing DP by the rotary die plate 16.

The stamp-type printing machine used in the present invention has the configuration as described above.
The number, position, contents, etc. of the general printing TP for C are programmed in advance, and the position of the die plate printing is also programmed, so that general printing such as date and time can be performed at an arbitrary position on the inserted printing card PC. The TP and the die plate printing DP can be printed. Next, the configuration of the platen device for the die plate according to the present invention implemented in the stamp type printing machine will be described in detail with reference to FIGS. 1 and 5. Will be described.

In FIG. 1, reference numeral 17 denotes a platen roller for a die plate provided on the bottom side of the rotary die plate 16 so as to face the same. The platen roller 17 has bearings 17c and 17d on left and right support shafts 17a and 17b. The bearings 17c and 17d are rotatably supported by being fitted into and held by left and right U-shaped bearing grooves 18a and 18b with left and right projections of a bearing plate 18 having a substantially U-shaped cross section. A screw shaft 19 is vertically provided at the center of the bottom surface of the bearing plate 18, and guide shafts 20a and 20b are vertically provided on both left and right sides. Holes 17Sc and 17Sa, 17
Insertion hole 1 drilled in the upper surface of support base 17T through Sb
7Tc and 17Ta, 17Tb are inserted.

The leaf spring 17S has a substantially mountain-shaped (umbrella-shaped) cross section as shown in FIG.
The support 17T on which the leaf spring 17S is placed is formed in a box shape as a whole, and the insertion hole 1
A nut 19 is provided at the lower end of the screw shaft 19 inserted through 7Tc.
N is screwed in, and by adjusting the nut 19N by screwing, the elastic force of the leaf spring 17S is adjusted, and the elastic force of the platen roller 17 pressing against the type surface (peripheral surface) of the rotary die plate 16 is adjusted. Can be adjusted to any strength depending on the thickness of the print card PC,
The repulsive force of the platen roller 17 pressed against the type surface of the rotary die plate 16 by the leaf spring 17S is elastically contacted with the card feed roller shafts 5, 6, and 7 by the linear spring 14S described above. Resilient force of each driven roller shaft 10, 11, 12
6, 7 and 10, 11, 12 are stronger than the holding force of the print card PC against the print card PC. Therefore, the die plate printing by the rotary die plate 16 and the platen roller 17 is performed by the strong spring force of the leaf spring 17S. Thus, it is possible to always perform clear printing at a constant speed without being affected by the card conveyance by each roller shaft.

Since the platen device for the die plate in the stamp-type printing machine according to the present invention has the above-described configuration, by inserting the print card PC, it is possible to perform either the pull-in conveyance or the discharge conveyance. , Dot printer 13
P prints the general print TP such as date and time on the print card PC once or plural times at an arbitrary position of the print card PC according to a program, and then, when the paper is ejected and conveyed, the rotary die plate 16 is moved to the arbitrary position on the print card PC. The die plate printing DP is performed once at the position. In the present invention, in particular, the rotary die plate 16 is used for the die plate printing D.
When performing P, the platen roller 17 repelled by the leaf spring 17S causes the print card PC to rotate with the rotary die plate 16.
, The die plate printing DP can be reliably performed on the printing card PC, and the elasticity of the leaf spring 17S can be arbitrarily adjusted by adjusting the nut 19N. By matching the thickness of the print card PC using the resilience, it is possible to print a clear die plate print DP.

Further, the elastic force of the leaf spring 17S is configured to be stronger than the elastic force of the spring 14S for transporting the print card PC.
7, 10, 11 and 12, the transfer speed of the print card PC, the rotary die plate 16 and the platen roller 1
Even if there is an error between the die plate printing speed and the die plate printing speed, the die plate printing speed is always given priority and is not affected by the card transport speed.
It is possible to always print P clearly without causing printing displacement.

[0022]

As described above, according to the platen device for the die plate in the stamp-type printing machine according to the present invention, the platen roller is pressed against the type surface of the rotary die plate by the elastic force of the leaf spring. This elastic force can be adjusted to an arbitrary strength depending on the thickness of the print card by adjusting the nut by adjusting the nut, so that clear printing is always performed at a uniform density regardless of the thickness of the print card used. In addition to being able to demonstrate the advantages that can be achieved, even if the transfer speed of the print card and the speed of die plate printing are different, the printing speed can be prevented by giving priority to the speed of die plate printing with strong spring pressure, so that the card feeding motor and the This eliminates the need for cumbersome adjustment work to match the rotation of the die plate drive motor, and enables practical use that can be easily used. General printing that say the date Toka time using the over expression die plate, and carried to the stamp-type printing machine which can perform die plate printing together, its practical effect is very high.

[Brief description of the drawings]

FIG. 1 is a side view showing an entire configuration of a stamp-type printing machine in which a platen device for a die plate according to the present invention is implemented.

FIG. 2 is a block diagram showing an electrical configuration of the stamp-type printing machine.

FIG. 3 is an explanatory diagram showing a print example of general printing on a print card.

FIG. 4 is an explanatory diagram showing a printing example of general printing and die plate printing on a print card.

FIG. 5 is an exploded perspective view showing a main part of the present invention.

[Explanation of symbols]

 5, 6, 7 Card feed roller shaft 8M Card feed motor 9 Conveyor belt 10, 11, 12 Follower roller shaft 13P Dot printer 14 Platen table 14S Spring 14c, 14d Fixed pin 14P Platen 16 Rotary die plate 16M Die plate drive motor 17 platen roller 17S leaf spring 17Sa-17Sc insertion hole 17T support base 17Ta-17Tc insertion hole 18 bearing plate 19N nut

Claims (2)

(57) [Scope of request for utility model registration] 1. A card conveying means for drawing and ejecting an inserted print card, a dot printer for performing general printing such as date and time on the inserted print card, and a dot printer for A rotary die plate for printing the die plate, and a plurality of card feed roller shafts which rotate the above-mentioned card conveying means by a motor interlockingly; In the platen type printing press constituted by the driven roller shaft, the rotary die plate is always pressed with a spring pressure stronger than the spring pressure applied to the driven roller shaft in correspondence with the rotary die plate. A platen device for a die plate in a stamp-type printing machine, wherein a platen roller for a die plate is provided which elastically contacts the surface. 2. A guide shaft and a screw shaft are suspended from the bottom surface of a bearing plate rotatably supporting a platen roller, and the whole of the guide plate and the supporting base is formed in a substantially mountain shape in cross section. In addition to interposing a leaf spring having an insertion hole through which the guide shaft and the screw shaft are inserted, an insertion hole through which the guide shaft and the screw shaft are inserted is also formed on the upper surface of the support base. 2. A platen device for a die plate in a stamp-type printing machine according to claim 1, wherein a nut for adjusting the spring pressure of the leaf spring is attached to a lower end side of the screw shaft through which is inserted.