JP3244599B2 - Cup wheel type printing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in the technical field of a time clock, and more specifically, to a cup wheel type printing machine suitable for use in a printing section of a time clock.

[0002]

2. Description of the Related Art A printing device used in a conventional time clock includes a stamping printing device using a type wheel and a hammer, and a printer printing device using various printers such as a dot printer and a thermal printer. When,
Although there is a printing device using a belt type, the present applicant has recently replaced these conventional printing devices with a small size, light weight, small printing noise, and relatively simple printing control. A cup-wheel type print that can be implemented easily and at low cost using a program,
It was successfully used as a printing device for a time clock.

[0003] The above-mentioned cup wheel type print is disclosed in, for example, Japanese Patent Publication No. 60-12237 or Japanese Patent Publication No. 1-15.
As shown in Japanese Patent Publication No. 383, a type is formed on the outer surface of the tip of each spoke piece (finger) of a type body whose entirety is formed in a substantially cup-wheel shape, and these spoke pieces are sequentially turned from the inside to the outside with a hammer. By hitting it toward, each type is pressed against the printing paper to perform emboss printing.

[0004] However, in the above-mentioned conventional cup wheel type print, the entire print including the spoke pieces is integrally formed using an elastic material such as plastic, so that the mechanical strength is low and the cup wheel type print cannot be used for a long time. When used, the bent portion of each spoke piece became fatigued, and the restoring force after embossing and printing by a hammer was sometimes reduced or broken, and the product life was relatively short.

[0005] Therefore, it has been considered that the whole of the above-mentioned cup wheel type print or the portion of each spoke piece is formed by punching a thin metal plate (spring plate) having elasticity.

[0006]

However, in the case of a cup wheel type print body made of the above-mentioned thin metal plate, when each spoke piece is bent inward so as to form a cup wheel shape as a whole, a springback is generated. As a result, sufficient dimensional accuracy cannot be obtained, and as a result, the bending angle of each spoke piece and the mounting angle of the type element become uneven, which may affect the rotation operation or hit each spoke piece by a hammer. There were problems such as uneven points and uneven print density.

[0007] Accordingly, the technical problem of the present invention is to correct the dimensional and angular deviations of the cup-wheel type prints caused by springback uniformly to predetermined angles, respectively, and to affect the rotation of the prints. The purpose of the present invention is to make it possible to perform uniform printing without any variation in print density.

[0008]

Means taken by the present invention to solve the above-mentioned technical problems are as follows.

A plurality of spoke pieces radially connected to an outer peripheral edge of the center disk portion are bent at substantially right angles toward the inside of the disk portion, and each of the spokes is bent. In a cup wheel type type body with a type element provided on the outer surface of the tip of the piece,

(1) Each spoke piece is bent slightly toward the inner side of the center disk portion at a right angle with respect to a right angle to form an over-bend, and inside the type housing surrounded by these spoke pieces, Each spoke piece must be slightly expanded outwardly against the elasticity and fixed by fitting a straightening cup body to straighten it to a predetermined angle.

(2) The cup-wheel type type body is integrally or rotatably attached to a type feed rotary shaft together with the correction cup body fitted in the type housing.

(3) A detent is projected on the bottom surface of the correction cup body, and a detent for inserting the projection is provided on a disk portion of the cup wheel type body into which the correction cup is fitted. Drill holes.

(4) The tip of the rotation preventing protrusion of the straightening cup body, which is inserted through the rotation preventing hole provided in the disk portion of the cup wheel type printing body, and further the type rotating gear mounted on the type feeding rotary shaft. Engage with the lock holes.

(5) A central disk portion and a large number of spoke pieces constituting the cup wheel type type body are integrally formed by punching a thin metal plate having elasticity and bent slightly inward from a right angle. On the outer surface of the tip of each spoke piece,
Installation of type elements made of plastic.

(6) A rib is formed on the outer peripheral edge of the straightening cup so as to project each spoke piece bent slightly inward from a right angle and slightly outwardly spread the spoke piece against its elasticity.

[0016]

The respective means described in the above (1) to (6) operate as follows.

According to the means described in the above (1), each of the spoke pieces which have been bent inwardly toward the inner side slightly from the right angle in advance are slightly pushed outward by fitting the straightening cup body. In order to spread and correct to a predetermined angle, even if each spoke piece has uneven bending, each spoke piece can be bent to the same size and angle, and excellent dimensional accuracy can be exhibited, so each spoke piece has Since the attached type elements can be stamped and printed at the same angle and the same printing pressure with respect to the printing paper, and each spoke piece is always tensioned by the fitting of the correction cup body, There is no danger that the spoke pieces will be deformed by receiving an external load or an external stress, thereby making it possible to always make the contact of the printing surface uniform.

According to the means described in the above (2), the cup wheel type character body and the correction cup body fitted inside the type character body are integrated with the rotary shaft for character type feeding. It is rotatable or attached integrally, so that the straightening state of each spoke piece by the straightening cup body is maintained even when the cup wheel type font is rotated, and the rotation of the cup wheel type font is performed smoothly. enable.

According to the means described in the above (3), when the correction cup body is fitted into the cup wheel type body, the rotation preventing protrusion of the correction cup body is formed on the disk portion of the cup wheel type body. By inserting the cup wheel type type body attached to the rotating shaft and the correction cup body by inserting it into the detent hole, it becomes possible to integrate the correction cup body.

According to the means described in the above (4), the tip of the detent protrusion of the straightening cup body inserted through the detent hole formed in the disk portion of the cup wheel type character body is further connected to the rotating shaft. Since the straightening cup is engaged with the locking hole of the attached type rotation gear, the straightening cup unit, the cup wheel type type body and the type rotation gear are integrated with each other. By rotating the cup wheel type type body and the correction cup body together, it becomes possible to select the type.

According to the means described in the above (5), the entire cup-wheel type character body composed of the disk portion and the many spoke pieces is formed by punching a thin metal plate having elasticity. In particular, by increasing the mechanical strength of each spoke piece portion that repeatedly bends, the bent portion of the spoke piece is not deformed or broken by fatigue even when used for a long time, and is stable for a long time. Printing can be repeated.

According to the means described in the above (6), the rib protruding from the upper outer peripheral edge of the correction cup body presses each spoke piece outwardly against its elasticity, so that each spoke piece has On the other hand, a uniform tension is always applied to prevent the spoke pieces from being deformed due to an external load or an external stress.

As described above, the above-described technical problems can be solved by the above-described means, and the problems of the conventional technology can be solved.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the above-described cup wheel type printing machine according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is an external view showing an example of a time recorder in which a cup wheel type printing machine according to the present invention is implemented. In the figure, reference numeral 1 denotes a time recorder, 1a denotes a time card TM insertion port, and 2. Attendance selection and setting switches arranged side by side in front of the insertion slot 1a, 2a are headings indicating the functions of the switches provided in front of these switches 2, ..., 3 is a display for displaying various data, 17T is Show the clock.

FIG. 2 is a partial cross-sectional front view illustrating the internal structure of the time clock 1. In the figure, reference numerals 4 and 4S denote a card detection lever and a card detection sensor provided inside the insertion slot 1a. , 1b are left and right card guides for guiding the time card TM inserted into the insertion slot 1a, 6 is a roller shaft laid horizontally in parallel along the card path using left and right bearings 6a, 6b, 6R. Is a card transport roller mounted on the roller shaft 6, and 5M is the sensor 4S described above.
Shows a card feed motor that operates when a time card TM is detected.

5W is the card feed motor 5M described above.
The worm 5W meshes with the worm wheel 6W attached to the roller shaft 6 with the worm attached to the drive shaft of the above, thereby transmitting the rotation of the card feed motor 5M to the roller shaft 6 and rotating the card transport roller 6R. The time card TM inserted into the insertion slot 1a is drawn in and discharged and conveyed between the roller 6R and a driven roller (not shown), and the encoder disk 6T attached to the tip of the roller shaft 6 is moved. By detecting the rotation with the disk sensor 6S, the time card T by the card transport roller 6R is used.
It is configured so that the card transport can be controlled by detecting the feed amount of M.

Reference numeral 7 denotes a card lower end detection sensor for reading the notch Ma formed at the lower end of the time card TM to determine the front and back of the card. The front and back of the time card TM are incorrectly inserted into the insertion slot 1a. When the sensor is inserted, an abnormality is displayed on the display 3 by detection by the sensor 7 or an alarm (not shown) is activated to call attention.

Reference numeral 1T denotes a fixed frame provided inside the time clock 1. This frame 1T includes the above-mentioned left and right card guides 1b, 1b, a roller shaft 6, sensors 4S, 6S, 7, and a motor 5M. Installed.

In FIGS. 2 and 3, what is indicated generally by reference numeral 8 is the left and right card guides 1b,
Time card TM sent guided by 1b
Is a cup wheel type printing machine according to the present invention for printing work data and the like in a printing column of the present invention, and this printing machine 8 is constituted by the following members.

That is, in the figure, 9T is the fixed frame 1 described above.
A guide shaft provided between the left and right mounting plates 1Ta, 1Tb provided at T. A guide cam groove is formed in a spiral shape on the peripheral surface of the guide shaft 9T, and a stepping motor 9M for type lateral movement is provided. When the guide shaft 9T is rotated, the carriage 9 attached to the guide shaft 9T is configured to move laterally in the left and right directions.

Reference numeral 10 denotes an upper case body mounted on the upper surface of the carriage 9, reference numeral 11 denotes a rotating shaft for type feed vertically provided rotatably inside a housing covered by the upper case body 10, and 11M denotes a carriage 9 A type selection stepping motor mounted on the bottom of the motor, 11b is the motor 1
With a pinion attached to the 1M drive shaft 11a, a type rotation gear 11c rotatably attached to the rotation shaft 11 meshes with the pinion 11b to transmit the rotation of the motor 11M to the gear 11c.

FIG. 4 is an exploded partial cross-sectional front view of a main part of the present invention, and FIG. 5 is a front cross-sectional view illustrating the details of the main part. In FIG. 2 and FIG. 3, what is indicated generally by the reference numeral 12 is that the rotary shaft 1 is located in the housing of the upper case body 10.
1. This is a cup-wheel type print fixed to an intermediate portion of the print head 1, and the print 12 is formed radially with a central disk portion 12c using a thin metal plate (spring material) as shown in FIG. A large number of spoke pieces 12b are punched and formed integrally, and each of the spoke pieces 12b is bent toward the inner side of the disk portion 12c slightly inward from a right angle, so that the whole is raised. In addition to being formed into a substantially cup wheel shape, a plastic type element 12a consisting of a number for date and time and an alphabet for day of the week is attached outward to the tip of each of the spoke pieces 12b. Internal type housing 12H
It is constituted by fitting the correction cup body 13 into the body.

The above-mentioned straightening cup body 13 is formed by bending each spoke piece 12b which has been bent inward by about 0.5 mm (about 2.4 °) inward of a right angle in advance as shown in FIG.
As shown in FIG. 5, the spokes 12b are pushed outward and spread out to be straightened by being inserted into the type housing 12H. The straightening performed on each of the spoke pieces 12b is substantially the outer periphery of the upper part of the straightening cup body 13. The ribs 13b protruding from the surface make the spoke pieces 12b straightened in this way vertically.
Is attached at an angle of about 7.0 ° to 7.5 ° with respect to a vertical line as shown in FIG.

Further, as shown in FIG. 5, the above-mentioned rotating shaft 11 is attached to the sleeve 11 in the center of the straightening cup body 13.
A cylindrical shaft 13a provided with a hole 13a1 to be fitted with S is integrally formed, and a central disc portion is formed on the bottom surface of the correction cup body 13 when the correction cup body 13 is fitted into the cup wheel type type body 12. Non-rotating hole 12c drilled in 12c
1 and 12c2, are formed with protrusions 13c and 13d which integrate the two 12 and 13 with each other, and the tip of each of the rotation stop protrusions 13c and 13d inserted through these rotation stop holes 12c1 and 12c2. The locking holes 11c1, formed in the type rotation gear 11c as shown in FIG.
By engaging with 11c2, the integrated correction cup body 13 and cup wheel type character body 12 are further integrated with the type rotation gear 11c.

Further, in the figure, reference numeral 14 denotes a printing solenoid mounted in the housing of the upper case body 10, and when this solenoid 14 is excited upon receiving an ON signal from the control unit,
The head 14H (see FIG. 3) projects and the type element 12a of the cup wheel type type body 12 set at the printing position by the type selection stepping motor 11M.
6, the entire spoke piece 12b is pushed out in the direction of the platen PT, and the type element 12a is pressed against the printing surface of the time card TM inserted along the platen PT for printing. It consists of

Further, in FIG. 3, reference numeral 11X denotes a detector protruding from the bottom surface of the interlocking gear 11c, and 11S denotes a home position in the horizontal rotation direction of the cup wheel type type body 12 by detecting the detector 11X. Is an ink roller for applying ink to each type element 12a of the cup-wheel type type body 12 while being rotated by the type body 12, 16a is a rotation axis thereof, and 10a is a type of the printing solenoid 14 described above. Mounting plate, 9
Y indicates an auxiliary guide shaft of the carriage 9.

In FIG. 2, 9Sa is the carriage 9
9S is a sensor which detects the detector 9a to detect the home position of the carriage 9, that is, the cup wheel type print body 12 in the lateral movement direction, by detecting the detector 9a. Reference numeral 15 denotes a printed circuit board.

Since the cup wheel type printing machine according to the present invention has the above-described configuration, the inside of the type housing 12H of the cup wheel type type body 12 in which each of the spoke pieces 12b is bent slightly inward from the right angle to the over eye. Then, when the straightening cup body 13 is fitted as shown in FIG. 5, a rib 13b pushes out each spoke piece 12b outward and straightens it at a predetermined angle (vertically in the illustrated embodiment). Is bent so that even if there is irregularity in the bending of each of the spoke pieces 12b due to springback or the like,
All the spoke pieces 12b are corrected to the same angle, and the positions and angles of the type elements 12a attached to the tips of the spoke pieces 12b can all be made uniform.

In fitting the straightening cup body 13 into the housing 12H of the cup wheel type type body 12, the rotation preventing projections 13c, 13b, which are provided on the bottom face of the straightening cup body 13, are provided.
13d is inserted through the detent holes 12c1 and 12c2 provided in the disk portion 12c of the type body 12, and
locking holes 11 in which c and 13d are formed in type feed gear 11c
In order to also engage with c1 and 11c2, the correction cup body 13 and the cup wheel type body 12 are attached to the type feed gear 11c in an integrated state, and the rotation of the type selection stepping motor 11M is rotated via this gear 11c. It can be accurately transmitted directly to the cup wheel type type body 12.

[0041]

Therefore, according to the cup wheel type printing machine of the present invention, the angle of each spoke piece of the cup wheel type type body made of a thin metal plate can be made uniform by fitting the correction cup body. Therefore, align the position of the type elements attached to the tip of each of these spoke pieces,
In addition to being able to perform uniform printing without shading, the rotation of the cup wheel type type body is also performed integrally with the correction cup body, so that the type selection can be performed smoothly, and accurately, By making a cup wheel type print body by punching a thin metal plate, each spoke piece can exhibit excellent strength and resilience, and it has functionality not available in conventional printing devices. An epoch-making printing machine with economic efficiency can be provided.

[Brief description of the drawings]

FIG. 1 is an external view showing an example of a time clock in which a cup wheel type printing machine according to the present invention is implemented.

FIG. 2 is a partial cross-sectional front view illustrating the internal structure of the time clock shown in FIG.

FIG. 3 is a front sectional view showing the entire configuration of the cup wheel type printing machine according to the present invention.

FIG. 4 is an exploded front sectional view of the cup wheel type print used in the present invention.

FIG. 5 is a front sectional view illustrating details of a cup wheel type print used in the present invention.

FIG. 6 is a configuration diagram illustrating a printing state using a type element.

[Explanation of symbols]

 TM Time card 8 Cup wheel type printing machine 11 Type rotation shaft 11c Type rotation gear 11c1, 11c2 Engagement hole 12 Cup wheel type type body 12a Type element 12b Spoke piece 12c Disk portion 12c1, 12c2 Non-rotating hole 12H Type Housing 13 Straightening cup body 13b Rib 13c, 13d Non-rotating projection 14 Solenoid for printing

Claims (6)

(57) [Claims] 1. A large number of spoke pieces radially connected to an outer peripheral edge of a center disk portion are bent at substantially right angles inward with respect to the disk portion, respectively. In a cup-wheel type print body in which a print element is provided on the outer surface of the tip of each spoke piece, the above-mentioned spoke pieces are formed to bend slightly more inward than at a right angle with respect to the center disk portion. Then, inside the type housing surrounded by these spoke pieces, a straightening cup body that pushes and spreads each spoke piece a little outward against elasticity and corrects it to a predetermined angle is fitted and fixed. Cup wheel type printing machine. 2. The cup wheel type according to claim 1, wherein the cup wheel type type body is integrally or rotatably mounted on a rotary shaft for type feeding together with the correction cup body fitted in the type type housing. Printing machine. 3. A detent hole protruding from a bottom surface of the correction cup body, and a detent hole for inserting the protrusion is provided in a disk portion of the cup wheel type body into which the correction cup body is fitted. 3. The cup wheel type printing machine according to claim 1, wherein a hole is formed. 4. A tip of a rotation-preventing projection of a correction cup body inserted through a rotation-preventing hole provided in a disk portion of a cup-wheel-type type body, and further a type-rotating gear attached to a type-feeding rotary shaft. 4. The cup wheel type printing machine according to claim 2, wherein the cup wheel type printing machine is engaged with the locking hole. 5. A central disk portion and a number of spoke pieces constituting a cup-wheel type print body are formed integrally by punching a thin metal plate having elasticity and bent slightly inward from a right angle. 2. A cup wheel type printing machine according to claim 1, wherein a type element made of plastic is attached to the outer surface of the tip of the spoke piece. 6. A rib is provided on the outer peripheral edge of the straightening cup so as to project each spoke piece bent slightly inward from a right angle and slightly outwardly spread the spoke piece against its elasticity. The cup wheel type printing machine according to claim 1, wherein