JPS58148917A - Replacing mechanism of recording pen - Google Patents

Abstract

PURPOSE:To replace recording pens easily by fitting a pen wheel to a pen carriage rotatably and providing a rotating mechanism which rotates the pen wheel only in one direction through a lever provided to the pen wheel. CONSTITUTION:In the recording pen replacing mechanism of the present invention, the pen wheel 21-24 which has recording pens 21-24 arranged radially at its outer circumference is fitted rotatably to the pen carriage 1 and the rotating mechanism rotates the pen wheel 2 only in one direction through projecting parts provided to the pen wheel 2 and levers 4 and 4' provided at one end of the sliding range of the pen carriage 1. Then, the pen wheel 2 is rotated by utilizing the sliding of the pen carriage 1 to replace the recording pens 21-22. Therefore, the need to add another mechanism to the pen carriage is eliminated and the recording pens are replaced easily.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording pen exchange mechanism in a printer that performs recording using recording pens of several different colors, such as a multicolor X-Y plotter.

Conventionally, two types of methods have been proposed for recording pen exchange mechanisms. On the one hand, all the necessary O recording pens and their up and down mechanisms are mounted on the Benn carriage, and these OIe brass pens can be raised and lowered as appropriate.
It records in any color, and the other is a bale with a pen holder part that stores multiple recording pens outside the storage range and a Benn carriage moved to the pen holder III, and a Benn carriage KIII fixed. Make a move: b
That's KXm.

It is OK to replace the recording pen. However, even 1k
Such devices have the following drawbacks. In other words, in the case of the former KsP, in which a large number of recording pens are mounted on a ben carriage, if the pen carriage becomes dusty due to the recording ben and its up-down mechanism, the weight will be extremely heavy. The load increases.In the latter case, the pen holding mechanism in the pen holder and the pen carriage is complicated, and instead of having to fold many parts, it is necessary to move the pen carriage with the position bottle of the pen holder when replacing the pen. In order to achieve this, the coordinate control of the quantity-bore mechanism is complicated. It is an object of the present invention to realize a recording pen exchange mechanism with a simple structure that does not require the addition of an extra mechanism and can exchange recording pens with a simple movement of a Ben carriage.

The recording pen exchange mechanism of the present invention rotates a pen wheel, which has a plurality of recording vents provided radially on its outer periphery and protrusions provided at equal intervals on the side surface corresponding to the recording pens, into a pen carriage. In addition to being freely attached, a lever that engages with the protrusion of the pen wheel is provided at one end of the sliding range of the Ben carriage, and this protrusion and lever constitute a rotation mechanism that rotates the pen wheel in one direction. It is customary to rotate the pen wheel using the sliding movement of the ben carriage to change the recording ben.

The recording pen exchange mechanism of the present invention will be explained below with reference to the drawings.

Genus 11il is a configuration diagram showing one embodiment of the recording pen exchange mechanism of the present invention. The cabinet uses the recording pen exchange mechanism of the present invention as
This is an example of a case where it is applied to a y plotter.
The attached pen wheel and ink are sliding wheels of the pen carriage 10, 4 is a lever provided at one end of the sliding range of the pen carriage 10, and 1 is a recording paper. In the X-Y plotter shown in the figure, the Benn carriage 1 moves in the X-axis direction and the recording paper 5 moves in the Y-axis direction to record an arbitrary OII pattern. FIG. 2 shows an example of 20 million pen wheels. Therefore, the pen wheel 2 is aI! Figure (a) 0-2 (recording pens 21 to 24 are provided in a radial shape on its outer periphery, and bins 25 to 26 corresponding to the recording pens 21 to 24 are provided on one side.
are provided at equal intervals on the same circumference.

Also, the pen wheel 2 is like II RII (b),
It is rotatably attached to the Ben carriage 1. Here, 11 is a shaft on which the pen wheel 2 is attached, 12 is a click mechanism that positions the pen wheel 2 so that one of the memory pens 21 to 24 is always at the bottom position, and 51 is a shaft parallel to the sliding shaft 5. The provided enclosure p stop shaft, SX, is a pen up/down lever. Further, Figure 3 is a configuration diagram showing the shape of the lever 4. The lever 4 has a dogleg shape, for example, and is rotatably attached to the chassis 41, while
Rotation in one direction is restricted by a stopper 42, and is held in the illustrated state by a one-tension spring 45.

The positional relationship between the lever 4 and the pen wheel 2 is as shown by the broken line in the figure, and the lever 4 is attached at a height such that its tip [44] contacts the bottle located at the top 1111 of the pen wheel 2. (9) The bottles 25 to 2B and the lever 4 constitute a rotation mechanism that rotates the pen wheel 2 only in one direction since the rotation of the lever 4 is limited to one direction by the stopper 42.

In the recording pen exchange mechanism of the present invention constructed as described above, the recording pen exchange operation is performed by moving the Ben carriage 1 to the position of the lever 4. That is, when the pen carriage 1 moves and reaches the position of the lever 4, the lever 4 is located at the upper side of the pen wheel 2, and the lever 4 is positioned at the upper side of the pen wheel 2, for example, when the lever 4 reaches the position of the lever 4.
K aleru. If the pen carriage 1 attempts to move further to the left, the lever 4 cannot rotate in the direction pushed by the pin 25, so the pin 25 receives the force and the pen wheel 2 rotates in the direction of the hour hand. Subsequently, as the pen carriage 1 moves in the position shown in Figure 4(b), the pen wheel 2 rotates once by 90 degrees, the recording pen 2 comes to the recording position in place of the recording pen 21, and the pen wheel 2 moves to the recording position in place of the recording pen 21. Due to the action of a stopper or the like (II not shown), the carriage 1 does not move any further to the left and stops at that position. At this time, the pen wheel 2 is positioned by the click mechanism 12.

Now, as described above, the pen wheel 2 rotates once by 90 degrees, the next recording pen 22 is prepared at the recording position, and then the JI
As shown in Figure II4 (@), the Ben carriage 1 moves to the right and the lever 4 also disengages. Here, as the pen carriage 1 moves, the pin 24 hits the lever 4, but since the lever 4 can be rotated in this direction, the pin 26 pushes the lever 4 away and moves, causing the pen wheel 2 to move. It won't rotate.

As mentioned above, place the 1-bent cartridge 1 under the lever 4 and repeat the same operation.
You can select and record. The operation of the servo mechanism that applies K when replacing the recording pen is extremely complicated, as it moves the pen carriage 1 to the end of its sliding range, hits a stopper, etc., and returns it within the recording range after the pen carriage 1 has stopped. It's a simple action.

In addition, Recommended Figure 5 is another example of the recording pen exchange mechanism of the present invention! FIG. 2 is a configuration diagram showing an example of koji. The figure shows another embodiment of a protrusion provided on the pen wheel and a lever that engages with the protrusion, and parts similar to those in Figures 1 to 4 are designated by the same reference numerals. In the figure, 25' to 28' are grooves provided at equal intervals on the side surface of the pen wheel 2, and 4' is the groove 25'.
This is a lever that engages with ~28'. The lever 4' has a claw 44' shaped as shown in the figure at its tip, and its middle part is elastic.

In the device configured in this way, the grooves 25' to 28'
The lever 4' engages with the structure as a kind of ratchet mechanism and imparts an 11 rotation force to the pen wheel 26. Therefore, the pen wheel 2 rotates in the direction of the arrow bo, and the recording pen is replaced. 9. From this state, when the pen wheel 2 moves in the direction of the arrow C and attempts to separate from the lever 4', it curves in the direction of the arrow d due to the shape of the lever 4'#i pawl 44', and enters the groove 2B'. The pen wheel 2 separates from the lever 4' without rotating.

Therefore, the pen wheel 20 side WK# kerbed groove 25
'~28' and lever 4' are pen wheels! This means that the groove 25 constitutes a rotation mechanism that rotates the
It is assumed that the wall W from ' to 28' functions as the aforementioned cyst origin.

As described above, in the recording pen exchange mechanism of the present invention, only the pen wheel integrally formed with the counting recording pen is replaced by a pen wheel. Since the Il is attached, the Benn carriage does not become large and heavy, and the load on the servo mechanism does not increase. Furthermore, since the recording pen can be replaced by a simple reciprocating motion of the Ben carriage, it is easy to control the servo mechanism for performing the replacement operation. This is particularly noticeable in a device in which the Benn carriage moves in the X and Y directions. In other words, even if the Benn carriage drive device has an ugly servo mechanism in each of the X and Y directions, if the Benn carriage is moved along the sliding wheels, for example only in the Since the recording pen can be replaced regardless of the position K, the control of the servo mechanism is very easy.

In the above explanation, a click mechanism was used as an example of a means for positioning the pen wheel, but the fixing of the writing pen is not limited to the click mechanism. If so, the click mechanism can be omitted.

Furthermore, the number of recording pens and the number of protrusions in a pen wheel do not necessarily have to be the same, and if a recording pen is not provided at a position corresponding to a specific protrusion, A] Get it. Further, the mechanism for restricting the rotation of the lever in one direction is not limited to the stopper alone, and a one-way clutch or the like may be applied to perform the same operation.

As explained above, in the O recording pen exchange mechanism of the present invention, a pen wheel having a plurality of O recording sickle pens provided radially on the outer shoulder is rotatably attached to the Ben carriage, and one pen wheel is attached to the Ben carriage. The protrusion provided and the lever provided in the zero sliding range of the pen carriage constitute a forward rotation mechanism that rotates the pen wheel in only one direction, and the pen wheel is rotated using the sliding motion of the Ben carriage.
Since it is necessary to replace the memory pen, there is no need to add an extra mechanism to the Ben carriage, and 4. Since the recording pen can be replaced by the single M1klk of the Ben carriage, it is possible to replace the recording pen by itself. Replacement*St can be realized with a simple configuration.

[Brief explanation of the drawing]

1I41vA~FIG. 5 is a block diagram showing one embodiment of the storage exchange mechanism of the present invention. 1...Ben carriage, 2...Pen wheel, 5 Sliding wheel%414'...Lever, 5...Recording paper, 21~
24 & 4 pens, 25-28... pins, 25'-28'
···groove. Agent: Patent Attorney Shinsuke Ozawa, - TJ/Ine No. 2 ((1)
(b) 3rd 14th Atsushi f.

Claims (1)

[Claims] a pen wheel having a plurality of recording pens provided radially around its outer periphery and a central origin provided corresponding to the arrangement pen; a pen carriage on which the pen wheel is rotatably imprinted; and a lever that rotates the pen wheel in only one direction in accordance with the sliding of the pen carriage, and the pen wheel is moved to the position of the lever, and the lever is used to rotate the pen wheel to record. The m1ll pen exchange mechanism is characterized by exchanging pens.