JPH0736774Y2 - Automatic printing device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] This invention is used for imprinting printed matter such as postcards and envelopes, printing labels, and printing expiration dates on plastic bags for food packaging. The present invention relates to an automatic printing device of a type that is small in size and directly prints in print.

[Prior Art] Conventionally, in this type of automatic printing apparatus, one type roller having a small diameter is provided in the subsequent stage of the take-in roller and the intermediate roller. After passing, it was sent to this type roller to print a predetermined item.

[Problems to be solved by the invention] When two-color printing or the like is desired in an automatic printer of this type that directly prints with a typeface, since there is one typelet roller, the printing of the first color is completed. After that, the type roller is replaced and the printing material is again fed through the feeding roller and the intermediate roller, and then the replaced type roller is used to print the second color, or an oversized offset printing machine is used.

However, when two-color printing is performed by such a double-printing method, misalignment may occur or the material to be printed has to be fed into the apparatus twice. There are drawbacks such as printing time of
Further, it has been costly and not easy to use an offset printing machine for a small printed matter such as a postcard or a postcard.

Also, if one type roller with a small diameter is used as in the conventional automatic printing device, it is not possible to incorporate a date stamp or dial type character for numbering, and the stamping area is narrower, limiting the printing design and layout. There are some difficulties such as being received.

In order to solve these problems, it is possible to increase the diameter of the type roller, but simply increasing the diameter of the type roller does not only synergistically increase the mechanical structure, but also reduces the size of the printing. Problems arise under the condition of equipment.

Therefore, the present invention aims to solve the above-mentioned problem by dividing the type roller into two.

[Means for Solving the Problems] In order to achieve this object, in the present invention, a first type roller and a second type roller are provided at a predetermined interval in the next stage of the feeding roller and the intermediate roller of the substrate to be printed, and A position detecting member for the printed material is provided between the intermediate roller shaft and the first type roller shaft, and a clutch shaft interlocking with the intermediate roller shaft is provided between the first type roller shaft and the second roller shaft. The first type roller shaft is provided with a rotation angle detecting member for the first type roller which is interlocked with the first type roller shaft, and the clutch shaft is provided with a first clutch mechanism and a second clutch mechanism using a clutch spring. The clutch mechanism engages the first type roller shaft and the clutch shaft by detecting the position detecting member,
The second clutch mechanism proposes an automatic printing device characterized in that the clutch shaft and the second type roller shaft are engaged with each other when the rotation angle detecting member is detected.

[Operation] In this invention, when the printing material passes through the feeding roller and the intermediate roller and reaches the position detecting member provided between the intermediate roller and the first type roller, the clutch spring is used by the detection of the position detecting member. The first clutch mechanism engages the first type roller shaft and the clutch shaft which is interlocked with the intermediate roller, and rotates the first type roller to print on a predetermined portion of the printing medium. Next, when the first type roller rotates by a predetermined angle, the second clutch mechanism using the clutch spring engages the clutch shaft and the second type roller shaft by the detection of the rotation angle detection member, and the first type roller is spaced at a predetermined interval. The second type roller provided is rotated and printing is performed on a predetermined portion of the printed material sent.

That is, in the present invention, the second type roller rotates after a lapse of a fixed time after the rotation of the first type roller, and the material to be printed is fed to the second type roller after the lapse of a certain time, so that the predetermined position of the material to be printed is reached. It is possible to print, and therefore, it is possible to perform two-color printing without color shift using the automatic printing device according to the present invention, and the printing time is shortened as compared with the two-color printing using the conventional automatic printing device. can do.

Further, in the present invention, not only two-color printing but also two type rollers are used, so that the printing area can be doubled as compared with the conventional apparatus, and therefore the width of the printing design and the printing layout can be widened. it can.

Further, in this invention, the imprint design can be divided into two type rollers to perform a detailed printing layout, and one type roller can be used as a date type or numbering dial type roller, and the other one can be designed. By using a printing type roller, it is possible to easily combine dial type printing and design printing.

[Embodiment] The present invention will be described below based on the illustrated embodiment.

Reference numeral 1 denotes an automatic printing device according to an embodiment of the present invention. The automatic printing device 1 includes an endless belt 4 stretched between retraction rollers 2 and 3 and a reversing torque roller 5 provided to face the retraction roller 2. A paper feeding unit 6 including a drive motor M for the endless belt 4, a first type roller 7, a pressure contact roller 8 provided opposite to the first type roller 7, a second type roller 9 and a second type roller 9 Has a printing unit 11 composed of a pressure contact roller 10 provided to face the sheet feeding unit 6 and the printing unit 11
An intermediate roller 12 and a pressing roller 13 are provided between the intermediate roller 12 and the intermediate roller 12 so as to face the intermediate roller 12.

Printed materials 14 such as postcards and postcards are stacked on the endless belt 4, and are fed between the retracting roller 2 and the reverse torque roller 5 by a guide piece 15 provided on the endless belt 4 as the drive motor M rotates. Then, the sheets are fed one by one between the intermediate roller 12 and the pressure roller 13.

An optical position detection member 16 including a photocoupler for the printed material 14 is provided between the intermediate roller 12 and the first type roller 7, and the shaft 17 of the first type roller 7 has the first type roller 7
The rotation angle detection member 18 is provided. In this embodiment, the rotation angle detecting member 18 is composed of, for example, a cam 19 having a step portion 19a at a position corresponding to the rotation angle of 120 ° of the first type roller 7 and a cam switch 20.

On the other hand, a second character roller 9 is provided at a predetermined distance from the first character roller 7, and a clutch shaft 22 is provided between the first character roller shaft 17 and the shaft 21 of the second character roller 9 in parallel. The clutch shaft 22 is provided with a gear 23 in this embodiment, and the gear 23
And a gear 25 provided on a shaft 24 of the intermediate roller 12 and a gear 26 rotatably supported by the idle gear 26 and the first type roller shaft 17.
The clutch shaft 22 is rotated with the intermediate roller shaft 24 by interposing 27.

A first gear 28 is rotatably supported on the clutch shaft 22, a gear 29 supported on the first type roller shaft 17 is engaged with the first gear 28, and the first gear 28 and the clutch shaft 22 are engaged with each other. A first clutch mechanism 30 is provided between them.

The first clutch mechanism 30 includes a clutch body 31 in this embodiment,
A clutch that is interposed between the boss 22a of the clutch shaft 22 and the boss 28a of the first gear 28 and the clutch shell 31 and has one end fixed to the clutch shell 31 and the other end open and contracted inward. Composed of spring 32. And clutch shaft
When the 22 rotates, the boss 28a is attached to the clutch barrel 31 accordingly.
The clutch spring 32 that comes into contact with the clutch spring 32 exerts a force such that it is urged to rotate. The biasing rotation of the body 31 is prevented. Therefore, in this state, the clutch spring 32 separates from the boss 22a of the clutch shaft 22 and the boss 28a of the first gear 28 and bulges outward, and the clutch is released.

When the solenoid 34 is turned on by the signal from the position detection member 16, the clutch claw 32 'and the lever 33 are disengaged, so that the clutch spring 32 is tightened to the boss 22a of the clutch shaft 22 and the boss 28a of the first gear 28. As a result, the rotation of the clutch shaft 22 is transmitted from the boss 22a to the boss 28a via the clutch spring 32, and the first gear 28 drives the gear 29 to rotate the first type roller shaft 17.

A reverse rotation preventing pawl 35 is provided on the outer periphery of the boss 28a of the first gear 28, and a lever 36 is engaged with the pawl 35 to prevent the reverse rotation of the first gear 28. The rotation stop position is determined.

A second gear 37 is rotatably supported on the clutch shaft 22, the second gear 37 meshes with a gear 38 supported on the second type roller shaft 21, and the second gear 37 and the clutch shaft 22 are connected to each other. A second clutch mechanism 39 is provided between them.

The second clutch mechanism 39, like the first clutch mechanism 30,
The clutch barrel 40, the boss 23a of the gear 23, the boss 37a of the second gear 37, and the clutch barrel 40 are interposed between the clutch barrel 40 and one end thereof fixed to the clutch barrel 40, while the other end thereof is opened so as to always contract inward. It is composed of a biased clutch spring 41. Then, when the clutch shaft 22 rotates, a force that causes the clutch barrel 40 to be urged and rotated by the clutch spring 41 contacting the boss 23a is accordingly generated.
A clutch claw 42 is provided on the outer periphery of the clutch claw 42, and a lever 43 is engaged with the clutch claw 42, and the biasing rotation of the clutch cylinder 40 is always prevented. Therefore, in this state, the clutch spring 41 separates from the boss 23a of the gear 23 and the boss 37a of the second gear 37 and bulges outward, and the clutch is released.

On the other hand, when the cam 19 rotates, for example, 120 ° with the rotation of the first type roller shaft 17, the cam switch 20 is turned on at the step portion 19a, and when the solenoid 44 is turned on, the clutch pawl 42 and the lever 43 are engaged. When the clutch spring 41 is released, the boss 22a of the clutch shaft 22 and the second gear 37
The rotation of the clutch shaft 22 is transmitted from the boss 23a to the boss 37a via the clutch spring 41, so that the second gear 37 drives the gear 38 to move the second type roller shaft 21. Rotate.

A reverse rotation preventing pawl 45 is provided on the outer periphery of the boss 37a of the second gear 37, and a lever 46 is engaged with the pawl 45 to prevent the reverse rotation of the second gear 37. The rotation stop position is determined.

In the above structure, as described above, the intermediate roller 12
When the printed material 14 passing between the pressure contact roller 13 and the pressure contact roller 13 reaches a predetermined position, the position detection member 16 outputs a detection signal to operate the solenoid 34 to release the engagement between the lever 33 and the clutch claw 32 '. When the first clutch mechanism 30 operates, the rotation of the intermediate roller shaft 24 is transmitted via the clutch shaft 22 to the first type roller shaft.
As it is transmitted to 17, the first type roller 7 rotates to print on the substrate 14.

Furthermore, when the first type roller 7 is rotated by 120 °, for example,
The cam switch 20 is turned on, the second clutch mechanism 39 is operated, and the rotation of the clutch shaft 22 is transmitted to the second type roller shaft 21, so that the second type roller 9 rotates.

On the other hand, the second type roller 9 which rotates in synchronization with the first type roller 7 in this way receives the material to be printed 14 from the first type roller 7 after a lapse of a predetermined time. Printing is performed at a predetermined location in relation to the printing location by the type roller 7.

Further, the detection positions of the position detection member 16 and the rotation angle detection member 18 to the interval between the first type roller 7 and the second type roller 9 are determined depending on the printing position of the printing material 14.

[Advantages of the Invention] As described in detail above, according to this invention, it is possible to perform two-color printing without a color shift in a short printing time.

Further, in the present invention, the printing area can be doubled as compared with the conventional apparatus, so that the width of the printing design and the printing layout can be widened.

Further, in this invention, the imprint design can be divided into two type rollers to perform a detailed printing layout, and one type roller can be used as a date type or numbering dial type roller, and the other one can be designed. By using a printing type roller, it is possible to easily combine dial type printing and design printing.

[Brief description of drawings]

FIG. 1 is a side view of an automatic printing apparatus showing an embodiment of the present invention, FIG. 2 is a plan view of relevant parts of the same, FIG. 3 is a side view of the same, and FIG. 4 shows a rotation angle detecting member. It is a side view. DESCRIPTION OF SYMBOLS 1 ... Automatic printing device, 2 ... Retracting roller, 7 ... First type roller, 9 ... Second type roller, 12 ... Intermediate roller, 16 ... Position detecting member, 17 ... First type roller shaft , 18
...... Rotation angle detection member, 21 …… Second type roller shaft, 22 ……
Clutch shaft, 30 ... First clutch mechanism, 39 ... Second clutch mechanism

Claims (1)

[Scope of utility model registration request] 1. A first type roller and a second type roller are provided at a predetermined interval in the next stage of a take-in roller and an intermediate roller of a material to be printed, and a material to be printed is provided between the intermediate roller shaft and the first character roller shaft. A position detecting member, a clutch shaft interlocking with the intermediate roller shaft is provided between the first type roller shaft and the second type roller shaft, and the first type roller shaft interlocks with the first type roller shaft. A rotation angle detecting member for the first type roller is provided, and a first clutch mechanism and a second clutch mechanism using a clutch spring are provided on the clutch shaft.
The clutch mechanism engages the first character roller shaft and the clutch shaft with the detection of the position detection member, and the second clutch mechanism engages the clutch shaft and the second character roller shaft with the detection of the rotation angle detection member. Automatic printing device characterized by.