JP3330456B2 - Cup wheel type print and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cup wheel type print body suitable for use in, for example, a time recorder printing apparatus and a method of manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, a printing apparatus used for a time clock includes an engraving printing method using a type wheel and a printing hammer as shown in, for example, Japanese Utility Model Publication No. 5440086. No. 40368, a belt type using belt type,
For example, as shown in JP-B-63-62029, there is a printer type using a printer such as a dot printer.

On the other hand, the time recording by the time recorder involves transferring the employment data of each person and performing various calculations such as salary on the basis of the record printed on the time card. Is not allowed, it is required to be particularly easy to see, and since there are many indoor environments such as offices and offices, the printing sound is required to be as quiet as possible, There is also a demand for economics that can be provided at a cost, and in addition, a degree of freedom that can be freely realized for various types of characters is also required.

However, the conventional embossing type printing apparatus using the above-mentioned type wheel and printing hammer has an advantage that it is easy to read since it uses type characters, but it has a predetermined number formed on the wheel surface. , And only characters such as symbols can be printed.However, since the printing order and printing position are predetermined by the type forming position, it is not possible to express freely by combining numbers and symbols, or use a hammer. There is a variety of problems such as the impact sound during printing, which has a bad effect on the environment, because of the imprinting.

The printing apparatus of the type belt type described above has an advantage that it can print quietly because of a small striking sound at the time of printing. However, the printing position and the order of the type on the belt are constant and the expression by printing is free. There are various problems that the belt cannot be used, and the durability is inferior because the belt is used.

Further, in the case of the above printer type printing apparatus,
In particular, dot printers, unlike type, form characters with a set of points, so their quality is lower than type in terms of readability and readability.To get closer to type, the number of dots must be reduced. Because it has to be increased,
There was a problem that the structure became complicated on both sides of the software, which affected the cost of the time clock.

Therefore, the present applicant has recently replaced these conventional printing apparatuses with a simple program using a program which is small in size, light in weight, low in printing noise and relatively simple in printing control. In addition, the cup wheel type type body configured to be implemented at low cost has been successfully used as a printing device of a time clock.

[0008] The above-described cup wheel type font is disclosed in, for example, Japanese Patent Publication No. 60-12237.
A printing paper is formed by forming a type on the outer surface of the tip of each spoke piece (finger) of a type body having a substantially cup-wheel shape as a whole, and hitting each spoke piece sequentially from the inside toward the outer periphery with a hammer. Each type is stamped and printed.

However, in the above-described conventional cup wheel type print, the entire print including the print and the spoke pieces is integrally formed using plastic, and after the print is selected by rotating the print. However, printing is performed by stopping the rotation and hitting the character outward with a hammer, but the shock received at the time of rotation stop vibrates the spoke pieces made of plastic and does not stop immediately, so before this vibration stops. If you hit the spoke pieces with a hammer, there is a problem that the printing position shifts and the printing quality deteriorates.
If you wait for printing until the vibration of the spoke pieces stops,
There is a problem that the time required for printing becomes long.

Therefore, as shown in FIGS. 3 and 4 of Japanese Patent Publication No. 1-15383, for example, a concave or convex positioning portion is integrally formed on the back side of the character portion provided on the spoke piece. On the other hand, a cup wheel type body in which the head of the hammer is formed in a shape conforming to the concave or convex shape so that the position of the type is determined by meshing with each other when hit with a hammer is considered. Was.

[0011]

However, in the cup wheel type type body described above, the entire type body including the spoke pieces is made of plastic. Since it is weak and easy to break, and the spring property is also weak, it is necessary to make each spoke piece thick in terms of strength, and as a result, the entire typeface becomes large,
There has been a problem that the printing apparatus incorporating the typeface inevitably becomes large.

Further, the above-mentioned cup wheel type print is
Because the hammer receiving part and the type part are made in one piece, the volume of the tip part increases and becomes heavier even if it is stuck, so that it becomes sink in plastic molding and is likely to be deformed. There was also a problem that the wear of the receiving portion was large and the product life was short.

Accordingly, the technical problem of the present invention is to form each spoke piece into a structure capable of immediately absorbing vibration, and to make the spoke pieces thin and thin to reduce the overall size and weight of the cup wheel type print. In addition, it is to maintain high strength and resiliency of each spoke piece so that high quality printing can be performed.

[0014]

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

(1) As described in the first aspect , a plurality of spoke pieces are radially arranged around the center disk portion, using a thin metal material having spring properties, and are connected to each other.
While each of these spoke pieces constitutes a cup wheel in which the spoke pieces are bent inward, a hammer head having a substantially V-shaped cross section of a printing hammer is provided on the inner surface of the tip of each spoke piece .
A groove having a substantially V-shaped cross section for receiving the tip is formed on the inner surface.
Draw-formed so as to protrude toward the outer surface
A plastic type element shall be molded and fixed to the outer surface of the tip of each spoke piece from which the protrusion due to the formation of the concave groove projects .

(2) As described in the second aspect, the outer shape of a cup wheel in which a number of spoke pieces are radially arranged around a central disk portion and are arranged continuously from a thin metal material having spring properties. a step of punching, the tip portion one side of which, such as each spoke pieces were formed into a substantially V-shaped cross section of the print hammers
A step of squeezing and forming a concave groove having a substantially V-shaped cross section for receiving the tip of the hammer head so as to protrude from the one side surface toward the outer surface, and projecting by forming these concave grooves Butt
The distal portion the other side of each spoke pieces out, outside and shaping fixing the print elements of plastic, a step of separating the leading end portion of each spoke piece from a metallic material, the print elements molded fixed to each spoke piece In a state of being bent at a substantially right angle to the disk portion in a state of facing the disk.

(3) As described in the third aspect, in punching the outer shape of the cup wheel from a thin metal material having a spring property, the tip of each spoke piece is punched slightly wider than other portions. Formed, formed a little wider this
By squeezing the tip portion into a substantially V-shaped cross section, the
The recess that receives the tip of the hammer head
While forming the groove, the other side of the
Plastic type elements are integrally molded on the surface
To stick .

[0018]

The means described in (1) to (3) operate as follows.

According to the means described in the above (1), since the spoke pieces are made of a thin metal material having a spring property,
The tip of the hammer head is formed in a spoke piece made of metal and has a substantially V-shaped cross section , while the entire typeface can be reduced in size and weight and can maintain strength and spring properties.
Because a concave groove with a substantially V-shaped cross section for receiving
The type can be positioned to improve the quality of printing, and even if this section is hit by a hammer head ,
Since the substantially V-shaped groove is not worn or deformed, the life of the product can be prolonged, and the tip of the groove is provided with a type element on the surface opposite to the spoke piece on which business travels. Due to the form-fixing, it is possible to provide a low-cost cup-wheel type type body in which the type element is firmly fixed to the spoke piece.

According to the means described in the above (2), on a series of transfer lines, blanking processing for punching the outer shape of a cup wheel from a thin metal material having spring properties, and a hammer formed in a V-shaped cross section. Hold the tip of the head
Capable of drawing a groove with a V-shaped cross section , forming a type element on each spoke, cutting off each spoke from the metal material, and bending these spokes. Therefore, it is possible to manufacture a cup wheel type print body with high accuracy, low cost, and good quality.

According to the means described in the above (3), the section is substantially
Since the tip portion of the V-shaped poke piece is punched and formed a little wider in advance, the squeeze formation of the groove can be easily performed, and even when the groove is formed, the spoke piece does not become thin, On the contrary, since the presence of the concave groove itself reinforces the spoke pieces, it is possible to manufacture a highly accurate cup wheel type print body which maintains the strength and spring property of the spoke pieces.

According further to the means described in the above (3), the cross-sectional
The hammer head was hit with a hammer at the point that the concave groove for receiving the tip of the hammer head having a substantially V-shaped surface was formed by drawing it into a substantially V-shaped cross section, and that the spoke piece itself was made of a metal having spring properties. together they can also be produced cup wheel type character body with excellent strength properties and spring properties not deformed or worn or print elements of the plastic is the cross section V
The spoke is formed and fixed by plastic injection to the opposite surface of the spoke piece having the U -shaped concave groove. Therefore, the protrusion having a substantially V-shaped cross section protruding to the opposite surface by the formation of the concave groove prevents the type element from coming off. Thus, it is possible to manufacture a high-quality, low-cost cup-wheel type print body in which a plastic print element is firmly fixed to the tip of a metal spoke piece.

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 print and its manufacturing method according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a side sectional view showing a state in which a cup wheel type print according to the present invention is applied to a printing device of a time clock (not shown). Is a printing device for printing work data on a time card (not shown) sent along the platen PT. The printing device 1 is composed of the following members.

That is, in the figure, reference numerals 3 and 4 denote a guide shaft and an auxiliary guide shaft which are installed in parallel inside the time clock, and a guide cam groove is spirally formed on the peripheral surface of the guide shaft 3. Stepping motor for horizontal movement of type (not shown)
When the guide shaft 3 rotates, the carriage 2 mounted between the guide shaft 3 and the auxiliary guide shaft 4 is configured to move laterally in the left and right directions.

Reference numeral 2a denotes an upper case body mounted on the upper surface of the carriage 2, 5 denotes a rotating shaft vertically rotatable inside a housing covered by the upper case body 2a, 6
M is a type selection stepping motor mounted on the bottom side of the carriage 2, 6a is a pinion mounted on a drive shaft 6 of the motor 6M, and an interlocking gear 5a mounted on the rotary shaft 5 meshes with the pinion 6a. The rotation of the motor 6M is transmitted to the rotating shaft 5.

Similarly, in FIG. 2, the reference numeral 10 generally designates a cup-wheel type print body fixed to an intermediate portion of the rotary shaft 5 so as to be located in the housing of the upper case body 2a. As shown in FIG. 2, this typeface body 10 is formed by bending a number of spoke pieces 10b formed radially by using a thin metal plate (spring material) inward at substantially right angles. In addition, the whole is formed into a substantially cup wheel shape, and necessary type elements 11 consisting of numerals for date and time, alphabets for days of the week, etc. are attached outward to the tip of each spoke piece 10b. 1, the correction ring 12 is fitted inside.

Further, in the drawing, reference numeral 8 designates a printing solenoid similarly mounted in the housing of the upper case body 2a. When this solenoid 8 is excited by receiving an ON signal from the control unit, as shown in FIG. And pushes out the type element 11 of the cup-wheel type type body 10 set at the printing position by the type selection stepping motor 6M, that is, the spoke piece 10b, in the direction of the platen PT.
The printing is performed by pressing against the printing surface of the time card TM inserted along the line.

Further, in FIG. 1, 5b is the interlocking gear 5
Reference numeral 5S denotes a sensor protruding from the bottom surface of the a, and a sensor 5S detects the home position of the cup wheel type print body 10 in the horizontal rotation direction by detecting the detector 5b.
Denotes each type element 11 of the cup wheel type type body 10
Reference numeral 9 denotes an ink roller for applying ink while being rotated by the typeface 10, reference numeral 9a denotes a rotation shaft thereof, and reference numeral 7 denotes a mounting plate for the printing solenoid 8 described above.

Next, a method of manufacturing the cup wheel type print body 10 according to the present invention shown in FIGS. 1 and 2 will be described with reference to FIGS. 3 to 10.

FIG. 3 shows the outer shape of the cup-wheel type character body 10 punched (blanked) from a thin metal material ST having a spring property such as a stainless spring material by using a press machine (not shown). FIG. 4 is an enlarged view of the main part, and FIG. 4 is an enlarged view of the main part. In these drawings, reference numeral 10a denotes a central disk part. , 10b ... are cut parts C from the metal material ST
F are formed by radially arranging a large number of spokes on the periphery of the disk portion 10a by punching F ..., and 10c ... are wide portions for forming a concave groove formed on the tip side of each of the spokes 10b ... 10d ... and 10e ... are each spoke pieces 10.
b indicate a flange portion and a connecting portion for connecting the tip portion to the metal material ST side, and 10H indicates an insertion hole for the rotary shaft 5 drilled at the center of the disk portion 10a, and 10S indicates the correction ring 12
The holes 10T... Indicate the holes into which the non-rotating protrusions (not shown) projecting from the bottom surface are inserted.

In FIG. 4 and FIG. 5 which is a perspective view of the main part, reference numeral 10c1 denotes a cross-section of the wide portion 10c of each of the spoke pieces 10b.
A groove for receiving the hammer head 8a of the solenoid 8 formed by drawing in a U-shape;
a indicates a punched groove from which the cut portion CF has been removed.

6 and 7, which are a plan view and a perspective view of the main part, 11 is a tip portion of each of the spoke pieces 10b, specifically, a wide portion in which a concave groove 10c1 is formed. 10
c are plastic type (for example, urethane rubber) type elements integrally molded and fixed to the back side of the type c by plastic injection, and these type elements 11...
Alternatively, various types of characters (not shown) called symbols are formed.

FIG. 7 and the cup wheel type 1
9, CL is a cut line of each spoke piece 10b..., And the tip of each spoke piece 10b. Fig. 8
10 is separated from the metal material ST as shown in FIGS.
As shown in FIG. 2, the cup wheel type print body 10 according to the present invention is formed by bending the print element 11 with the print element 11 facing the surface and slightly over the right angle with respect to the central disk portion 10a. It is made to be manufactured.

FIG. 11 shows a state in which printing is performed by pressing the type element 11 against the printing surface of the time card TM by projecting the hammer head 8a.
The tip of the hammer head 8a is also formed in a substantially V-shaped cross-section so that the hammer head 8a is fitted in a concave groove 10c1 formed in a substantially V-shaped cross-section formed on the back side of the type element 11.

[0037] The cup wheel type print 10 according to the present invention.
Has a structure as described above. Since the entire cup wheel type print body 10 including the spoke pieces 10b is formed by punching a thin metal plate (metal material ST) having spring properties, the hammer is used. It can withstand the repeated printing operation by the head 8a sufficiently, exhibit excellent strength and resilience, and can make each spoke piece 10b thin. It is possible to reduce the weight and to make the whole of the printing apparatus 1 in which it is incorporated compact.

Further, the concave groove 10c1 for receiving the hammer head 8a is also formed by squeezing the metal spoke piece 10b into a substantially V-shaped cross section.
It does not wear or deform even if it is repeatedly hit, so that stable printing can be continued for a long time, and the tip of the spoke piece 10b forming the concave groove 10c1 is slightly smaller than other parts. Wide part 10c with wide width
Therefore, even if the concave groove 10c1 is formed by drawing, the spoke piece 10b does not become partially thinner, and the shape of the concave groove 10c1 formed by drawing into a substantially V-shaped cross section also has the shape of the spoke piece 10b. In this case, the spokes 10b can have excellent strength and spring properties.

In addition, the plastic type element 11 fixedly formed at the tip of each spoke piece 10b is fixed to the surface on the opposite side where the concave groove 10c1 is formed.
The protrusion on the opposite side of the concave groove 10c1 serves as a stopper, so that the type element 11 can be securely molded and fixed to the tip of the spoke piece 10b.
Since the whole can be formed relatively thin, the plastic can be easily formed and deformation such as sink marks can be prevented.

Further, according to the present invention, as shown in FIG.
, A step of forming and fixing the type element 11 by plastic injection, a step of separating the tip of each spoke piece 10b... From the metal material ST at the cut line CL, and a step of bending each spoke piece 10b. And, since all of the finishing correction process can be performed in a series of transfer lines,
The manufacturing of the cup wheel type body 10 can be simplified, and the manufacturing cost can be further reduced.

[0041]

As described above, according to the cup-wheel type print body and the method of manufacturing the same according to the present invention, a small and lightweight cup-wheel type print type having high accuracy, low cost, and extremely excellent printing quality is provided. It can exhibit the advantage of providing fonts, and, combined with the fact that the entire printing device incorporating the same can be made compact, can be used in printing devices such as time recorders, which is notably suitable. It is.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a configuration of a printing apparatus incorporating a cup wheel type print according to the present invention.

FIG. 2 is a front sectional view showing a configuration of a cup wheel type print according to the present invention.

FIG. 3 is a configuration diagram illustrating a state in which the outer shape of a typeface is punched out of a metal material.

FIG. 4 is a configuration diagram showing a part of FIG. 3 in an enlarged manner.

FIG. 5 is an enlarged perspective view of a main part showing a state in which a concave groove for receiving a hammer is formed in the spoke piece.

FIG. 6 is a partial plan view of a main part showing a state in which a type element is molded and fixed to a spoke piece.

FIG. 7 is an enlarged perspective view of a main part showing a state in which a type element is molded and fixed to a spoke piece.

FIG. 8 is a configuration diagram illustrating a state in which a spoke piece is cut off from a metal material and bent.

FIG. 9 is a configuration diagram illustrating a state in which the spoke pieces are separated from the metal material and bent.

FIG. 10 is an enlarged perspective view of a main part illustrating a state in which a spoke piece is cut and bent from a metal material.

FIG. 11 is a side cross-sectional view illustrating a state in which a print element is printing on a time card.

FIG. 12 is a block diagram illustrating a manufacturing process of a cup wheel type print.

[Explanation of symbols]

ST Thin metal material 8 with spring property 8 Hammer 8a Hammer head 10 Cup wheel type body 10a Central disk part 10b Spoke piece 10c Wide part 10c1 Accepts tip of hammer head
Recessed groove 11 Type element CL Cut line

────────────────────────────────────────────────── ─── Continued from the front page Examiner Daiji Takamatsu (56) References JP-A-51-42616 (JP, A) JP-A-57-210846 (JP, A) (58) Fields investigated (Int. Cl. ⁷⁾ , DB name) B41J 1/44 G07C 1/00

Claims (3)

(57) [Claims] 1. Using a thin metal material having spring properties,
A large number of spoke pieces are arranged radially around the center disk portion, and the spoke wheels are bent inward.On the other hand, on the inner surface of the tip of each spoke piece , The cross section of the printing hammer is formed in a substantially V shape.
And the substantially V-shaped section of <br/> groove for receiving a tip portion of the hammer head, and <br/> aperture shaped to protrude toward the outer side from the inner side, due to the molding of this such groove A cup wheel type type body, wherein a plastic type element is molded and fixed to the outer surface of the tip of each spoke piece with a protruding protrusion . 2. A step of punching the outer shape of a cup wheel in which a large number of spoke pieces are arranged radially around a central disk portion from a thin metal material having spring properties, and each of the spoke pieces is punched. The cross section of the printing hammer on one side of the tip
Accepts the tip of hammer head formed in substantially V shape
The concave groove having a substantially V-shaped cross section is directed toward the outer side from the one side.
Drawing process so as to protrude and forming these concave grooves.
The distal portion the other side of each spoke piece but The lugs protruding by shape, forming anchoring a step of forming fixing the print elements of plastic, a step of separating the leading end portion of each spoke piece of metal material, each spoke piece Bending the raised type element at a substantially right angle to the disk portion with the type element facing outward. 3. In punching the outer shape of a cup wheel from a thin metal material having spring properties, the tip of each spoke piece is formed by punching a little wider than other portions.
Squeeze the slightly wider tip into a V-shaped cross section.
And the tip of the hammer head formed in a substantially V-shaped cross section
Form this groove while forming a groove to receive the end
Plastic type element on the opposite spoke surface
3. The method according to claim 2, wherein the parts are integrally molded and fixed.
A method for producing the cup wheel type print according to the above.