JP2579391Y2 - Recorder - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recorder for continuously recording a process analog signal, and more particularly to an industrial recorder in which new recording paper can be easily loaded.

[0002]

2. Description of the Related Art In a recorder, when a recording paper (hereinafter, referred to as a chart) runs out, it is necessary to replenish a new chart. However, in a conventional industrial recorder, for example, a chart sending mechanism is pulled out and a pen is drawn. After the is separated from the chart, a new chart is put in the chart box, the chart is pulled out from the chart box while raising the chart holding plate, and the chart is set by inserting a sprocket wheel into the chart perforation.

[0003]

However, according to the above-described loading of the chart, a series of operations from moving the chart sending mechanism to setting a new chart feed hole on the sprocket wheel is troublesome and time-consuming. There is a problem. Accordingly, an object of the present invention is to provide a recorder which can easily and quickly load a new chart.

[0004]

In order to achieve the above object, a recorder according to the present invention has the following configuration. A chart box that accommodates a chart whose start end is set to be longer than the fold of the folded chart, a chart base that can be displaced in the direction away from the pen tip as a support when recording data on the chart with a pen, A guide roller that guides the chart when it is sent from the chart box to the chart table, a drive mechanism that rotates the guide roller, and a displaceable pressure roller that is connected to the guide roller and rotates in conjunction with the guide roller. When,
A guide portion is provided between the chart box and the guide roller, and guides the chart.When the chart base is moved in a direction away from the pen tip, the pressing roller guides in conjunction with the displacement of the chart base. The chart base and the pressure contact roller are connected so as to abut on the guide portion, and when the pressure contact roller comes into contact with the guide portion due to the displacement of the chart base, the start path of the chart is sent to the chart base by the rotation of the pressure contact roller. Provide a mechanical configuration.

[0005]

In this recorder, a new chart can be loaded by inserting a new chart into the chart box and then pushing the chart base away from the pen tip.
Then, the pressure contact roller comes into contact with the guide portion with the displacement of the chart table. When the chart is loaded, the starting end of the chart in the chart box is located at the guide portion, so that when the pressing roller comes into contact with the guide portion, it is sandwiched between the pressing roller and the guide portion. .

On the other hand, at the same time when the chart table is pushed, the motor rotates at a higher speed than usual, the guide roller connected to the motor also rotates at a high speed, and the pressing roller connected to the guide roller also rotates at a high speed. Due to the rotation and pressing of the pressing roller, the starting end of the chart is guided to the chart table through the delivery path. Here, if the pressing of the chart base is stopped, the pressing roller returns to the original state, the rotation of the motor returns to the normal speed, and the automatic delivery of the chart stops. Thereafter, the starting end of the sent chart is appropriately pulled out, and the perforation of the chart is engaged with the sprocket wheel, whereby the loading of the new chart is completed.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The recorder of the present invention will be described below based on embodiments. However, the recorder of the present invention is characterized by the chart loading mechanism, and the other configuration is the same as the conventional recorder. Therefore, the chart loading mechanism will be mainly described. FIG. 1 is a plan view (top view) of a main part of the recorder according to the embodiment. In this embodiment, the folded chart W is housed in the chart box 1, starting W _a chart W from the chart outlet 1a of the chart box 1 protrudes. A guide 1b for guiding the chart W is provided adjacent to the chart outlet 1a.
b is formed by extending a wall forming the chart outlet 1a. In the vicinity of the chart outlet 1a, a pressure roller 2 is supported so as to be displaceable and rotatable, and a guide roller 3 is rotatably supported.

In this embodiment, the pressing roller 2 is made of, for example, rubber in order to securely hold the chart W, and is located at a position where it comes into contact with a substantially central portion of the chart W in the width direction. The guide roller 3 is connected via a suitable number of gears to a pulse motor (not shown) for delivering the chart W. The pressure roller 2 is connected to the guide roller 3 by a belt 4 and rotates in the same direction as the guide roller 3. Therefore,
During operation of the recorder, the rotation of the motor causes the guide rollers 3 to rotate.
As a result, the pressing roller 2 also rotates.

In the guide portion 1b of the chart box 1,
A pressing spring plate 5 for pressing the chart W against the guide roller 3 is attached by screws. The pressing spring plate 5 has a restoring force in a direction away from the guide roller 3. or,
A spring plate pressing arm 6 is arranged so as to be swingable in proximity to the guide roller 3, and the pressing spring plate 5 is constantly urged by the spring plate pressing arm 6 toward the guide roller 3 against its restoring force. I have. On the front side of the guide roller 3, a chart base 7 interlocking with a chart loading push button switch (not shown) is provided.
Are displaceably provided. That is, by pressing the local portion 7a of the chart base 7 in the direction of the arrow, a switch is turned on in accordance with the displacement of the chart base 7, and the motor rotates at a higher speed than the normal rotation.

The guide box 1 moves from the chart box 1 to the chart base 7 by the gap between the guide roller 3 and the spring plate pressing arm 6 (and the spring plate 5), and between the chart base 7 and the pen tip 8. A delivery path for the chart W is formed. Note that the pen tip 8 is lightly abutted on the chart base 7, and data is recorded on the chart W by the pen tip 8 on the chart base 7.

The recorded chart W is passed through the chart support plate 11 by the sprocket wheel 12 engaged with the perforation hole, and is pressed onto the sprocket wheel 12 by the chart pressing member 13, and is stored in the chart storage box 14. It is configured to be sent. Note that the diameter of the sprocket wheel 12 is slightly larger than the diameter of the guide roller 3 so that the chart W does not slack.

Further, as shown in FIG.
The spring leaf holding arm 6 and the chart base 7 are
A plate 20 which is swingably attached to the support shaft 10 of
Each is fixed with screws. Therefore, as shown in FIG. 1, when the local portion 7 a of the chart base 7 is pressed in the direction of the arrow, the pressing roller 2, the spring plate holding arm 6 and the chart base 7 move integrally with the support shaft 10 by the plate 20. .
That is, when the local portion 7a of the chart base 7 moves in the direction of the arrow, the pressing roller 2 hits the guide portion 1b of the chart box 1, and the spring leaf pressing arm 6 moves in the direction away from the spring leaf 5.

The driving force of the sprocket wheel 12 and the guide roller 3 for drawing out the chart W is obtained by a pulse motor. In this embodiment, the pulse motor is
At a low speed during normal recording, and at a high speed when a new chart is loaded. In other words, as mentioned earlier,
When the chart loading push button switch linked to the chart base 7 is turned on, the pulse motor rotates at high speed, and both the pressure roller 2 and the guide roller 3 rotate at high speed. As shown in FIG. 3, the chart loading push button switch and the pulse motor have a circuit configuration in which the button switch 30 is connected to the pulse motor 32 via the CPU 31, and the pulse motor 32 operates only when the button switch 30 is ON. A pulse signal suitable for driving is generated by the CPU 31.

[0014] On the other hand, the chart W accommodated in the chart box 1, as shown in FIG. 4, the starting end W _a are somewhat longer in than fold chart W, charts W chart box 1 when put, this beginning W _a
Are located at the guide portion 1b of the chart box 1 (see FIG. 1). Therefore, a new chart W
It is important to form _a starting end Wa in the first step. For reference, a normal chart W ′ is shown in FIG.

To load a new chart with the recorder configured as described above, first, a chart W as shown in FIG. At this time, previously set to a state where start W _a chart W is positioned at the guide portion 1b chart box 1. Then, when the local portion 7a of the chart base 7 is pushed in the direction of the arrow, the chart loading push button switch 30 is turned on, the pulse motor 32 rotates at high speed, and both the guide roller 3 and the pressure roller 2 rotate at high speed.
When the chart table 7 is pressed, the pressing roller 2 is brought into contact with the guide portion 1b with the plate 20. At the same time, the spring plate pressing arm 6 separates from the spring plate 5, the urging force of the spring plate 5 is released, and the spring plate 5 separates from the guide roller 3 by its own restoring force. Thereby, a gap is formed between the guide roller 3 and the spring plate 5.

[0016] Here, when the pressing roller 2 is pressed against the guide portion 1b, with the rotation of the pressing roller 2, starting W _a clamping been chart W between the pressing roller 2 and the guide portion 1b, guide It passes through the gap between the roller 3 and the spring plate 5 and the spring plate pressing arm 6 to reach the gap between the chart table 7 and the pen tip 8. At this point, if the pressing of the local portion 7a of the chart base 7 is stopped, the rotation of the motor returns to the normal speed by the return of the chart base 7, and at the same time, the pressing roller 2 and the spring plate pressing arm 6 are in the original state. Then, the pressing roller 2 separates from the guide portion 1b, and the delivery of the chart W is stopped. At the same time, the guide roller 3 is
The chart W is pressed against the guide roller 3 by the spring plate 5 urged to the side. Then, the starting point W of the chart W
_a is appropriately pulled out, and is passed over the chart support plate 11, and the feed hole of the chart W is hung on the sprocket wheel 12, whereby the loading of the new chart W is completed.

[0017]

[Effects of the Invention] The recorder of the present invention is configured as described above, so simply inserting a new chart into the chart box and then pushing the chart base automatically sends the start end of the new chart to the chart base. Therefore, the loading of the chart can be performed easily and quickly as compared with the related art.

[Brief description of the drawings]

FIG. 1 is a plan view of a main part of a recorder according to an embodiment of the present invention.

FIG. 2 is a partial plan view of the recorder shown in FIG.

FIG. 3 is a circuit diagram of a chart loading push button switch and a pulse motor in the recorder shown in FIG. 1;

FIG. 4 is a diagram for explaining a chart to be loaded on the recorder of the present invention.

FIG. 5 is a diagram illustrating a chart to be loaded on a normal recorder.

[Explanation of symbols]

Starting end of one chart box 1b guide unit 2 the pressure roller 3 guide rollers 7 Chart base 7a chart table of the local 8 nib W chart (recording paper) W _a chart

────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Ikuo Kano 1 Nishinokyo Kuwaharacho, Nakagyo-ku, Kyoto City Shimazu Works Sanjo Plant (56) References Real public 1984-33648 (JP, Y2) 39565 (JP, Y2) (58) Field surveyed (Int. Cl. ⁶ , DB name) G01D 15/28-15/30

Claims (1)

(57) [Scope of request for utility model registration] 1. A chart box for accommodating a chart whose leading end is set to be longer than a fold of a folded chart, and a chart which serves as a support for recording data on the chart with a pen and can be displaced away from a pen tip. A table, a guide roller for guiding the chart when the chart is sent from the chart box to the chart table, a drive mechanism for rotating the guide roller, and connected to the guide roller to rotate in conjunction with the guide roller Displaceable pressure contact roller, provided between the chart box and the guide roller, a guide portion for guiding the chart, when the chart base is moved away from the pen tip, interlocked with the displacement of the chart base Then, the chart table and the pressing roller are connected so that the pressing roller comes into contact with the guide portion. Therefore, when the pressing roller comes into contact with the guide portion, a recording path is provided in which the start of the chart is transmitted to the chart table by the rotation of the pressing roller.