JPS6243416Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a printing trigger device suitable for use in a printing machine such as a time stamp.

[Conventional technology]

When printing paper is inserted along the upper guide plate of the case body, the drive device installed inside the case operates to press down the type wheel against the inserted printing paper and press and roll the printing roller. Therefore, printing machines such as time stamps, which can perform appropriate printing on printing paper between the type wheel and printing roller, receive the leading edge of the inserted printing paper and press the printing paper. A trigger device is provided that determines the amount of insertion, that is, the printing position by the type wheel, and operates the drive device in response to the reception, thereby causing the type wheel and the printing roller to perform printing operations, respectively.

[Problem that the invention attempts to solve]

However, in conventional trigger devices, the trigger directly presses the micro switch of the drive unit motor to turn on the switch, so the drive unit motor will not start operating correctly unless the trigger is pressed with a fairly strong force. There were various problems such as the tip of the printing paper used to press the trigger was easily damaged, and the pain at the tip often caused misalignment of the printing position, and the trigger could not be activated accurately if the printing paper was thin. .

Therefore, the technical problem of the present invention is to enable the switch of the drive device motor to be actuated accurately with a small amount of force.

[Means for solving problems]

The measures taken in the present invention to solve the above technical problems are as follows.

(1) A trigger board is installed inside the case body on the bottom side of the guide plate that guides the printing paper so that it can be moved freely along the direction of insertion and removal of the printing paper. A protruding trigger lever is pivotably mounted so as to be horizontally rotatable while always being under the elastic action of a spring.

(2) On the back side of the trigger lever, there shall be provided a switch piece that turns on the operating switch of the drive device when pushed by the trigger lever, which is rotated by receiving the printing paper.

[Effect]

The above means works as follows.

The element (1) above is that by moving the trigger board to which the trigger is attached along the direction of insertion and removal of the printing paper, it is possible to arbitrarily determine the printing position on the inserted printing paper. When the leading edge of the inserted printing paper hits, the trigger lever rotates against the elasticity of the spring, which prevents damage to the leading edge of the printing paper, enables long-term use of the printing paper, and allows the printing position to be adjusted. Prevent misalignment.

The above element (2) makes it possible to turn on the actuating switch of the drive device with extremely little force, and also makes it possible to accurately actuate the trigger even on thin printing paper.

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

〔Example〕

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Before explaining the configuration of a trigger device according to the present invention, the configuration of a time stamp, which is an embodiment of a printing machine using the present invention, will be described below with reference to the drawings.

In the figure, 1 is a lower case that constitutes the case body of the stamp, 2 is an upper case attached to the lower case 1 in an open state, 3 and 3' are left and right seat plates attached to the lower case 1, and 4 is a lower case. The bottom plate of the lower case 1 is shown. Support plates 3a are provided at the rear ends of both seat plates 3, 3' to project into the upper case 2, and these support plates 3a
A type support frame 6 is rotatably attached to a support shaft 5 horizontally suspended, and various type wheels 8 are attached to a type shaft 7 installed between the tips of the support frame 6.

9 is a spring that constantly pulls the type support frame 6 upward; 10 is an interlocking arm connected to the rear end of the type support frame 6 with a rotation shaft 11; A roller shaft 12 with guide rollers 12a attached to both ends is rotatably mounted, and the guide roller 12a is movably fitted into an oblique slot 14 of a guide plate 13 fixed on the bottom plate 4. When the guide roller 12a is located at the position indicated by the solid line in FIG. 1, the type support frame 6 is located inside the upper case 2 and the type wheel 8 is stopped at the upper position as shown. , when the guide roller 12a moves to the upper end of the inclined hole 14 as shown by the imaginary line in the figure, the interlocking arm 1
0 rotates to rotate the type support frame 6 in the counterclockwise direction in the drawing around the support shaft 5, and move the type ring 8 to the upper guide plate 15 of the lower case 1 as shown by the imaginary line in the figure.
It is designed to descend and rotate towards the target.

Further, reference numerals 20 and 21 are guide shafts that are arranged horizontally in parallel between the left and right seat plates 3 and 3', and 22 is a roller box that is movably attached to both guide shafts 20 and 21. Both ends 24a and 24b of a roller shaft 24 with a printing roller 23 attached to the center thereof are fitted into bearing grooves 22a and 22b recessed in both the front and rear walls of the roller box 22, respectively. Approximately arcuate cross-section groove 24 recessed on the circumferential surface
The upper surfaces of both the guide shafts 20 and 21 are fitted to the bottom surfaces of the guide shafts 20 and 24d, and the roller shaft 24 is supported by these guide shafts 20 and 21 and rolls on the guide shafts 20 and 21. There is.

Next, what is generally indicated by reference numeral 30 in FIG. 1 is the downward rotation of the type wheel 8 and the printing roller 2.
3 is a drive device that controls the rolling of 3, and 31 indicates the motor that is the drive source, and these are all connected to the lower case 1.
installed inside. The above drive device 30 is
A disk 33 rotatably attached to a main shaft 32 erected on the bottom plate 4, a slide plate 36 that moves the roller shaft 12 of the guide roller 12a as the disk 33 rotates, and a roller box 22 that moves the roller shaft 12 of the guide roller 12a as a guide shaft. 20 and 21.

The disk 33 is rotated by meshing a worm 31b attached to the rotating shaft 31a of the motor 31 with a worm gear 34 formed on its circumferential surface. Furthermore, a substantially heart-shaped grooved cam 35 is provided on the bottom surface of the disc 33.
An operating roller 35a attached to the upper surface of the slide plate 36 is fitted into the grooved cam 35, and the slide plate 36 reciprocates in the longitudinal direction with one rotation of the disk 33, and the tip of the slide plate 36 is moved back and forth. The installed operating plate 3
6a clamps the roller shaft 12 and lowers and raises the type wheel 8.

The crank plate 37, whose root end is pivotally connected to a mounting shaft 38 provided upright on the bottom plate 4, has the disk 33.
A first crank elongated hole 37a into which a crank roller 39 protruding from the upper surface is loosely fitted, and a second crank elongated hole 37b into which a driven roller 25 vertically provided on the bottom surface of the roller box 22 is loosely fitted are bored. When the disk 33 starts rotating, the crank roller 39 rotates the crank plate 37 in a fan shape about the mounting shaft 38 as a fulcrum, and the roller box 22 is reciprocated along the guide shafts 20 and 21.

The time stamp driving device 30 having the above-mentioned configuration operates by driving the disk 33 by starting the motor 31.
starts rotating, the slide plate 36 rotates the type support frame 6, lowers the type wheel 8, and presses the type at the bottom printing position onto the upper surface of the printing paper P inserted along the guide plate 15. At the same time, the crank plate 37 rotates to press and roll the printing roller 23 against the bottom side of the printing paper P on which the printed characters are pressed,
With this, it is possible to perform predetermined printing in a predetermined column of the printing paper P.Next, the time stamp is used to determine the insertion amount of the printing paper, and the operation of the drive device 30, Specifically, the motor 31 is started and the type wheel 8 and the printing roller 23 are activated.
The trigger device of the present invention that operates to print will be explained in detail according to the illustrated embodiment.

In FIGS. 1 to 3, reference numeral 40 denotes brackets 3b, 3c protruding from one seat plate 3 in the lower case 1 along the longitudinal direction of the guide plate 15.
This slide shaft 4 is installed between
0 is a shaft bearing portion 4 formed at the root end of the trigger board, which is generally indicated by the reference numeral 41 in each figure.
2 is movably fitted loosely, and the tip 41a of the trigger board 41 is movably placed on the upper surface of the other seat board 3'. and the other seat plate 3'
The guide plate 1 is supported by the guide plate 1 in the lower case 1.
5, that is, in the direction in which the printing paper P is inserted and removed.

In each figure, reference numeral 43 denotes an operation plate protruding from the upper surface of the shaft bearing 42, and the trigger board 41 can be moved and adjusted from the outside of the lower case 1 by moving the operation plate 43 with your finger. can do.
Further, in FIGS. 2 and 3, 44 is a leaf spring that presses the top surface of the slide shaft 40 within the shaft support 42, and the slide shaft 40 is connected to the leaf spring 44 and the inner bottom of the shaft support 42. The trigger board 41 can be held at the moved position by being elastically clamped from above and below by an attached elastic material 45 such as a sponge, and when moving the trigger board 41, the operation board 43 Press down with your finger from above to release the shaft bearing part 4.
2 releases the pressure of the leaf spring 44 against the slide shaft 40, and then, in this state, the operation plate 43 is pushed in the axial direction along the slide shaft 40, thereby facilitating the movement operation. There is a system in place to do this. In addition, the slide shaft 40
By increasing the elasticity of the plate spring 44, it is also possible to clamp the plate spring 44 only without using the elastic member 45.

In addition, reference numeral 46 in the figure is a trigger lever whose root end 46a is rotatably attached to the upper surface of the root end of the trigger board 41 using a mounting shaft 47. A spring 48 for springing is attached in the direction in which the printing paper P is inserted (to the left in FIG. 2), and a spring 48 is attached to the rear side of the root end of the lever 46, with a mounting shaft 47 as a fulcrum. A stopper piece 49 is provided to stop the rotation of the trigger lever 46 (rotation in the clockwise direction in FIG. 2) midway through.

As described above, the front end of the trigger lever 46, which is rotatably attached to the top surface of the trigger board 41, has a
Trigger 5 facing the insertion direction of printing paper P
0, and this trigger 50 projects from the central guide elongated hole 15A formed in the guide plate 15 onto the upper surface of the guide plate 15, that is, onto the insertion path for the printing paper P. 51 is a switch piece protruding from the back side of the trigger lever 46, and on the rear trigger board 41 of this switch piece 51 is a switching element of a switch 52 for turning on and off the motor 31, which is also attached to the trigger board 41. 52a and 52b (for example, a photo sensor) are attached to the trigger lever 4 against the spring 48.
6 rotates clockwise in FIG. 2 about the mounting shaft 47, and the switch piece 51 rotates between both switching elements 52a and 52 as shown by the imaginary line in the figure.
When the switch 52 is inserted between the positions b, the switch 52 closes and the motor 31 is started.

Reference numerals 53 and 54 are card receiving protrusions protruding from the upper surfaces of the root end and tip of the trigger board 41, and these protrusions 53 and 54 are drilled on the left and right sides of the guide plate 15 in the same way as the trigger 50. It protrudes to the upper surface side of the guide plate 15 through the provided side guide elongated holes 15B and 15C, and receives both ends of the leading end of the printing paper P inserted along the guide plate 15. Note that these two card receiving protrusions 53 and 54 are formed slightly shorter than the trigger 50, so that the inserted printing paper P
After the center of the leading edge of the printing paper P hits the trigger 50 and the trigger lever 46 is pressed and rotated, both sides of the leading edge of the printing paper P are received.

Since the trigger device for a printing machine according to the present invention has the configuration described above, the trigger board 41 is slid and adjusted along the slide shaft 40, and the trigger 5
0 at an arbitrary position on the guide plate 15, and then insert the printing paper P along the guide plate 15 in the direction of the arrow X in FIG. When it hits, it is pushed and the trigger lever 46 is rotated against the spring 48, and the insertion is stopped when both ends of the trigger lever come into contact with the card receiving protrusions 53 and 54, thereby determining the printing position. At the same time, the switch piece 51 is moved to the switching element 5 by the rotation of the trigger lever 46.
Switch 5 is inserted between 2a and 52b.
2 is turned on, the motor 31 is started, the drive device 30 is activated, the type wheel 8 is rotated downward onto the top surface of the printing paper P, and furthermore, the printing roller 23 presses and rolls against the bottom surface of the printing paper P. to print.

When the switch 52 is turned on, the motor 31 rotates the disc 33 of the drive device 30 once and raises the lowered type wheel 8 to its original position.
Moreover, the printing roller 23 that has been pressed and rolled is returned to its original position and stopped, thereby completing one cycle of printing. After printing is completed, when the printing paper P is pulled out and the pressure on the trigger 50 is released, the trigger lever 46 is moved back to its original position by the spring 48, and is ready for the next printing.

〔effect〕

As explained above, according to the trigger device of the present invention, the trigger device is provided with a trigger board that can be freely moved and operated along a guide plate, the above-mentioned trigger is protruded from the tip, and the proximal end is rotated onto the above-mentioned trigger board. The trigger lever is movably pivoted, has a switch piece protruding from the back, and is composed of a spring that keeps the trigger lever in its current position at all times, making the structure extremely simple and easy to manufacture and assemble. This makes it possible to significantly reduce manufacturing costs, and since the trigger lever operates smoothly and can be turned on with little force, there is no possibility of damage to the leading edge of the printing paper or misalignment of the printing position. In addition, it has the advantage of allowing the use of thin printing paper, and its simple structure and ease of implementation make it suitable for use in various printing machines, including the time stamp shown in the figure. It is suitable for use in the field.

[Brief explanation of the drawing]

Figure 1 is a side sectional view of a time stamp embodying the present invention, Figure 2 is a plan view with the case removed, and Figure 3 is Figure 2A with the internal drive device omitted.
- It is a sectional view of the A line. 1...Lower case, 2...Upper case, 8...Type wheel, 15...Guide plate, 15A...Guide slot,
23...Print roller, 30...Drive device, 31...
...Motor, 40...Slide shaft, 41...Trigger board, 46...Trigger lever, 47...Mounting shaft, 48...Spring, 50...Trigger, 51...
Switch piece, 52...Motor on/off switch, P...Printing paper.

Claims (1)

[Scope of utility model registration request] When the printing paper is inserted along the guide plate of the case body and the trigger protruding above the guide plate is pressed, the drive device installed inside the case body is activated to press down the type ring against the printing paper and lower the printing roller. In a printing machine configured to perform printing by pressing and rolling, a trigger board is installed inside the case body on the bottom side of the guide plate so as to be movable and operable along the direction of insertion and removal of the printing paper. On the top surface of the trigger board, a trigger lever with the above-mentioned trigger protruding from the front side of the tip is pivoted so as to be horizontally rotatable while always being under the elastic action of a spring, and on the back side of the trigger lever. The trigger device for a printing machine is characterized in that it is provided with a switch piece that is pushed by a trigger lever that is rotated by receiving the printing paper to turn on a switch for operating the drive device.