JPS5815724B2 - Dotting mechanism of recording instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dotting mechanism of a recording instrument that connects and connects multiple measurement points using a changeover switch and records the measured values sequentially on recording paper.

Many proposals have been made for this type of dot mechanism and each has been put into practical use, but most of them record measured values at six or fewer measurement points, and some dot mechanisms for 12 points are used. Only used.

However, recently, instrumentation has become more and more diverse, and it has become necessary to record measured values at multiple measurement points with a single recording instrument. However, the recording mechanism was very complicated and large, which resulted in the disadvantage that the entire instrument was not only large in size but also expensive.

In order to meet the above requirements, the present invention realizes a 12-dot recording instrument with a relatively simple configuration, and adds a simple mechanism to this base to record 6-dot, 4-dot, 3-dot, This realizes a two-point or one-point hitting mechanism.

The present invention will be explained below with reference to the drawings.

FIG. 1 is a plan sectional view of an embodiment of a dotting mechanism according to the present invention;
FIG. 2 is a side cross-sectional view with the bat wheel removed.

On both sides, 11 and 12 are side plates of the machine frame, 13 and 14 are studs that hold the side plates 11 and 12 at a constant interval, and 15 is an index attached to the front side of the machine frame.

Reference numeral 16 denotes a drive shaft of a dot mechanism provided in the instrument body, which is provided with a keyway 17 over almost its entire length, and is intermittently rotated by an electric motor via a Geneva mechanism (not shown).

Reference numerals 18 and 19 denote bearings fixed to the side plate 11°) 12, into which the drive shaft 16 is loosely fitted.

Therefore, the dotting mechanism supported by the machine frame can repeat the dotting operation intermittently by the drive shaft 16, and can also slide in the axial direction on the drive shaft 16 in response to the magnitude of the input signal.

i21 is a boss which includes a disc 22, three cams 24 arranged at equal intervals on one side of the disc, and three triangular cams 25 arranged at equal intervals on the other side of the disc 22. It is equipped with

This boss 21 connects one drive shaft 1 between both bearings 18 and 19.
A key 26 which is loosely fitted into the drive shaft 6 and provided inside the boss is fitted into the key groove 11 of the drive shaft 1.

23 is three Geneva pins provided on the disk at equal intervals.

31 is a first movable plate, 32 is a second movable plate, one end of which is loosely fitted in the bearings 18 and 19, and both rotating plates 31
．． 32 is connected by a shaft 33 and a Geneva shaft 41, which will be described later.

Note that the second movable plate 32 may be omitted.

Reference numeral 35 denotes a crow-shaped swinging arm, whose approximately central portion is loosely fitted to a Geneva shaft 41, which will be described later.The head portion 36 is in contact with the cam 24, and the tail portion 37 is in contact with the stud 13 of the machine frame. .

41 is a Geneva shaft, one end of which is fixed to the first movable plate 31 and the other end fixed to the second movable plate 32.

42 is a Geneva gear loosely fitted to the Geneva shaft 41, and 44 is a gear that moves together with the Geneva gear.

Reference numeral 51 denotes a shaft attached to the first movable plate 31. A gear 52 and a disc 53 cooperating therewith are fixed to this shaft, and a groove 54 is provided in the disc 53.

Reference numeral 55 denotes a bat car, around which twelve ink bats 56 made of felt material impregnated with ink are attached.

Reference numeral 57 denotes a pin provided on one end surface of the bat wheel 55. This pin is fitted into a groove 54 of the disk, and the bat wheel 55 rotates together with the disk 53.

Reference numeral 58 denotes a support plate, one end of which is rotatably attached to the end face of the capacity of the bat wheel 55, and the other end is formed into a bifurcated shape and is connected to the Geneva shaft 4.
Holding 1.

Reference numeral 61 denotes a shaft attached to the first movable plate 31. A dotting wheel 62 having 12 dotting needles 63 arranged at equal intervals around the circumference is loosely fitted onto this shaft, and the dotting needles 63 at the top are connected to an ink vat. 56 and is inked.

Reference numeral 64 denotes a display wheel attached to the end face of the dot wheel 62, and 12 display sections 65 are provided around the dot wheel 62, and numbers representing measurement points corresponding to the dot point needle 63 are displayed on these display sections. ing.

66 is a gear loosely fitted onto the shaft 61 and co-operating with the dotting wheel 62;
It meshes with the gear 52.

61 is a shaft attached to the first movable plate 31, and 68 is an intermediate gear loosely fitted to this shaft, which meshes with the gear 44 and the gear 52.

Note that 1 is recording paper.

The operation of sequentially measuring six measuring points and recording the measured values as the dotting points using the dotting mechanism of the present invention constructed as described above will be described below.

First, 1-
Displays the characters 6, 1 to 6, and the same numbers 1, 1,
2,2. Ink of the same color is used for the ink bats 56 corresponding to .

In the state shown in FIG. 2, the head 36 of the swinging arm 35 is on the top of the cam 24, and therefore the swinging arm 35 is rotating counterclockwise about the tail 37 that contacts the stud 13 as a fulcrum. The Geneva shaft 41 connected to the moving arm 35 is pulled upward, and the first movable plate 31 connected thereto also moves to the drive shaft 16.
The first movable plate 31 rotates clockwise around the bearing 18 of the
The gear 52, the disc 53, the bat wheel 55 connected thereto, the dot wheel 62, the display wheel 64, etc. are pulled up.

Therefore, the dotting needle 63a of the dotting wheel 62 is separated from the recording paper 1.

Next, the drive shaft 16 rotates in response to the switching of the measurement point, and when the disc 22, cam 24, etc. connected thereto rotate counterclockwise, the head of the swing arm 35 as shown in FIG. 36 drops into the bottom of cam 24.

Therefore, the swing arm 35 rotates clockwise about the stud 13 with which its tail 31 comes into contact as a fulcrum, rotates the first movable plate 31 connected thereto counterclockwise, and drops the dotting wheel 62 and the like.

As a result, the dot needle 63a records the measured value at that time on the recording paper.

When the disk 22 subsequently rotates, the head 36 of the swinging arm 35
rises to the top of the cam 24 again, so the swinging arm 35 rotates counterclockwise about the stud 13 and pulls up the dotting wheel 62 and the like.

When the disk 22 rotates further, the pin 23 engages the Geneva gear 42.
engages with the notch 43 of and rotates the Geneva gear 42 clockwise 1/2
Rotate 6 times.

Note that the disk 22 rotates 1/3 from its original position and then stops.

The rotation of the Geneva gear 42 causes the bat wheel 55 to rotate by 1/12 via the gears 44, 68, and 52, and also causes the dot wheel 62 and the display wheel 64 to rotate by 1/12 via the gear 66.

The disk 22 rotates again and the head 36 of the swinging arm 35 moves to the cam 2.
4, the dot needle 63b records the measured value of the next measurement point on the recording paper 1.

When the recording of the sixth measurement point is completed by repeating the above operations, the first measurement point is connected again by the measurement point changeover switch.

On the other hand, in the dot mechanism, the seventh dot needle operates and records the measured value at the first measurement point.

In this case, since the ink in the seventh ink vat is the same color as that in the first ink vat, there is no inconvenience in observing the recording.

As described above, when recording measured values at six measurement points using the dotting point mechanism of the present invention, each measuring point is measured and recorded twice while the dotting point mechanism performs one cycle of operation. It is.

Next, when sequentially measuring 12 measurement points using the dotting point mechanism according to the present invention and recording the measured values, as shown in FIG. 4 (Figure A is a front view and Ross is a side view), is approximately equal to the outer diameter of the display wheel 64, and the display section 65 has a number from 1 to 1.
A cap 64' similar in shape to the display wheel 64 displaying numbers up to 2 is placed over the display wheel 64, and all ink in the ink vat 56 is changed to a specific color (it is not necessary to change all of the ink, but it is enough to be distinguishable). good).

In this way, by performing exactly the same operation as described above, it is possible to sequentially switch and measure the 12 measurement points and record the measured values on the recording paper.

In addition, in the above description, the case where the cap 64' displaying the numbers 1 to 12 was used, but the display wheel 64 displays the numbers 1 to 12, and the cap 64' displays the numbers 1 to 61 to 6.
It may also be possible to display the numbers.

Further, the cap 64' is not limited to the above shape,
Other shapes may also be used.

In addition, in these embodiments, examples in which six and 12 measurement points are recorded are described, but it is also possible to record only four, three, two, or one measurement points.

In these cases, the display on the cap 64' and the ink in the ink vat 56 may be changed as necessary.

By the way, by attaching and detaching some mechanisms based on such a dotting mechanism, it is possible to provide a printing function for displaying measurement points on recording paper as necessary.

FIG. 5 is a plan sectional view showing essential parts of this embodiment, and FIG. 6 is a side sectional view.

Note that the same parts as in FIGS. 1 and 2 are designated by the same reference numerals, and the explanation thereof will be omitted.

First, the character wheel 64 attached to the dot wheel 62 is removed from the 6 or 12 dot mechanism shown in FIGS. 1 and 2, and the following parts are added.

In both figures, 71 is a shaft whose one end is fixed below the Geneva shaft 41 of the first movable plate 31, 72 is a collar rotatably attached to this shaft, 73 is a gear fixed to the collar, and 74 is a shaft fixed to the collar. It's a delivery car.

The other end of the shaft 71 is loosely fitted to the drive plate 81 via a bearing.

75 is a feed wheel loosely fitted to the drive plate 81 via a cylindrical bearing 76; 77 is an endless character band made of flexible material stretched between both feed wheels 74 and 75; A character or symbol 78 is provided at the .

Note that the gear 73 meshes with the gear 44 (FIG. 1).

Two legs 82 and 83 are formed at one end of the drive plate 81, and a counterclockwise rotational force is always applied to the drive plate 81 by a spring 84 interposed on the shaft 71, but the rotation is Dotting wheel shaft 61 in cylindrical bearing 16 of feed wheel 75
regulated by.

The operation of such a mechanism will be explained.

In the state shown in FIG. 6, both the dotting needle 63 and the characters 78a of the character band 77 are separated from the recording paper 1.

Next, the disk 22 rotates and the head 36 of the swinging arm 35 moves to the cam 2.
When it falls to the bottom of 4, it will be in the state shown in Figure 3, and the dot needle 63
The measured value of the measuring point at that time is recorded as a dot, and the character 78a of the character band 77 also records the number of the measuring point on the recording paper.

As the disk 22 continues to rotate, the swinging arm 35 pulls the first movable plate 31 upward again by the cam 24, while the triangular cam 25 pulls one leg 82 of the drive plate 81 as shown in FIG.
, rotate the drive plate 81 clockwise about the shaft 71 against the spring 84, and move the character 78 on the upper side of the character band 77.
x is pressed against the ink vat 56 and inked.

Note that the characters 78 may be inked in one color, so instead of using the ink vat 56, for example, a vat wheel of one color may be attached to the shaft 41, and inking may be performed using this.

When the disc 22 rotates further, the triangular cam 25 moves to the drive plate 81.
The swinging arm 3 is removed from the leg 82 and returns to the state shown in FIG.
When the head 36 of No. 5 falls to the bottom of the cam 24, the measured value of the measurement point at that time and the number of the measurement point are written together on the recording paper.

However, if you write letters for each dot, the records will become lumpy and very hard to read. It is sufficient to observe the recorded results even if the image is written in the same way.

In order to meet such a request, printing may be performed after an appropriate period of time.

That is, as shown in FIG. 8, when printing is not required, the foot 83 of the drive plate is pushed in the direction of arrow a using a cam or the like to rotate the drive plate 81 clockwise, and the character band 77 is raised. If this is done, even if the swinging arm 35 operates and the dot needle 63 records, the characters 78 in the character band will not come into contact with the recording paper 1, so no characters will be printed.

If the cam, etc. that presses the foot 83 of the drive plate is returned to its original position at regular intervals, characters indicating measurement points will be displayed on the recording paper 1 at a constant rate in the time direction, along with the recording of the dot point needle 63. It can be printed at intervals of

By the way, when there are many measurement points, there are places where no detector is installed, places where a detector is installed but there is no need to record, or places where data is not recorded all the time but recorded at regular intervals. There are things I want to do.

It is pointless to constantly record measurement points like this.
Since the recorded results are also difficult to see, it is more convenient to skip such measurement points and record the measurement values at the next measurement point.

For example, if you want to skip the 8th measuring point and move from the 7th to the 9th measuring point, as shown in FIG. When the first movable plate 31 is in a state of rotation, rotation of the first movable plate 31 is restricted by a cam or the like at the point indicated by the arrow so that it does not rotate counterclockwise again.

Therefore, even if the cam 24 rotates, the swinging arm 35 does not operate, so even if the eighth measurement signal is applied, the striking mechanism idles and does not perform a striking operation.

If the cam regulating the rotation of the first movable plate 31 is returned to its original position immediately after the cam 24 completes the eighth operation, the dotting mechanism returns to its normal state and the dotting needle returns to the ninth measuring position. Record the measurement value of the point on the recording paper.

FIG. 9 is an explanatory diagram of an embodiment for performing the above operation.

In this embodiment, an eccentric and deformed rectangular cam 91 is disposed between the first movable plate 31 and the foot 83 of the driving plate.

Note that the solid line in the figure indicates a steady state, and the dotted line indicates a displacement state.

In the state shown in Figure A, the cam 91 is in a steady state, and the first movable plate 31 and drive plate 81 are also operating in a normal state.

Now, when the cam 91 is rotated clockwise as shown in Ross, the protrusion 92 moves the foot 83 of the drive plate in the direction of arrow a.
button to stop printing characters by the character band 77.

When the cam 91 is further rotated clockwise, the protrusion 92 pushes the first movable plate 31 by an amount y in the direction of the arrow, and the protrusion 93 pushes the foot 82 of the drive plate by an amount Stop dotting and printing operations.

Note that the above order can be changed as appropriate by changing the shape of the cam 91 as appropriate.

According to this embodiment, by rotating the cam 91 clockwise or counterclockwise according to a predetermined program, it is possible to arbitrarily set dot skipping, stopping printing, etc.

Although actual examples of the present invention have been described above, the present invention is not limited to the above embodiments, and many more embodiments are possible without departing from the basic inventive idea of the present invention.

As is clear from the above description, the present invention has the following effects.

(1) Since the entire dotting mechanism is simplified, it can be made smaller and lighter.

(2) Switching to 6 RBIs, 12 RBIs, 4 RBIs, 3 RBIs, 2 RBIs, and 1 RBI can be easily performed.

(3) By adding a simple mechanism, characters, symbols, etc. indicating measurement points can be printed along with the dot records.

(4) A desired time and measurement point number, etc. can be printed with a simple operation.

(5) Measurement points that do not require recording can be skipped by a simple operation.

(6) Printing intervals and jumps can be arbitrarily and automatically set by a program.

[Brief explanation of drawings]

Fig. 1 is a plan sectional view of an embodiment of the dotting mechanism according to the present invention, Fig. 2 is a side sectional view thereof with the bat wheel removed, Fig. 3 is an explanatory view of its operation, and Fig. 4 is a cap of the dotting wheel. A front view and a side view, FIG. 5 is a plan sectional view showing an embodiment of the main part of a dotting mechanism with a printing function, FIG. 6 is a side sectional view, FIGS. 7 and 8 are operation explanatory views, FIG. 9 is an explanatory diagram showing the cam and its operation. 11.12... Side plate of machine frame, 13, 14... Stud of machine frame, 16... Drive shaft, 22... Disc, 24...
...Cam, 25...Triangular cam, 31...First movable plate, 32...Second movable plate, 35...Swing arm, 42...
・Geneva car, 53... Disc, 55... Bat car, 5
6... Ink vat, 58... Support plate, 62...
Dot wheel, 63... Dot needle, 64... Display wheel, 64'
...Cap, 74,75...Feeding wheel, 77...
Character band, 81... Drive plate, 82, 83... Foot, 91
···cam.

Claims (1)

[Scope of Claims] 1. A moving shaft to which a rotational force is applied to perform a dot recording operation, a Geneva gear, a bat wheel and a dot wheel, and a dot needle of the dot wheel that rotate by a fixed angle by rotation of the Geneva gear. A character wheel is provided with a display corresponding to the dot wheel, a character wheel is removably attached to the end face of the dot wheel so as to cooperate with the dot wheel, and a gear system is arranged to transmit the rotation of the Geneva gear to each of these wheels.
A movable plate attached to the drive shaft so as to swing around the drive shaft, and a drive means attached to the drive shaft to swing the movable plate to record dots with a dot wheel and rotate the Geneva gear. A dotting mechanism of a recording instrument consisting of. 2. A dotting mechanism for a recording instrument as set forth in claim 1, wherein the character wheel is constructed such that a cap having a similar shape to the character wheel is placed on the outer circumferential surface of the character wheel.