JPS5847507B2 - Knitting machine scanning method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention enables information such as a knitting pattern recorded on an information recording medium such as a blank sheet of paper by displaying a mark with a pencil or the like to be detected by optical scanning with a scanning member. The present invention relates to a scanning method for a knitting machine that reads a binary electric signal according to the amount of light reflected from the surface of an information recording medium.

This type of scanning method does not have any problems if, for example, ordinary white paper is used as the information recording medium, since only that blank paper is used, but in addition, the reflectance is significantly different from that. For example, when trying to use plastic films differently depending on their purpose, the binary value determined by the presence or absence of marks between blank paper and plastic film is read as a binary electrical signal with exactly 1 and O reversed. There are drawbacks.

In other words, if the paper is blank, the blank area (unmarked area)
The ratio of light reflectance between the black ink-printed part (marked part) and the part printed with black ink (marked part) is about 3 to 7 to 1, and the reaction rate of the marked part is considerably lower than that of the unmarked part.

On the other hand, in the case of a plastic film, such as a polyacetate resin film, that has a matte finish (microscopic irregularities are formed on one or both sides by a mechanical or chemical method) to make it translucent, the plain part (unmarked part) ) and the black pencil painted area (marked area) is about 1:2 to 4, and the reflectance of the marked area is much lower than that of the unmarked area.

Therefore, for blank paper and film, the relationship between the reflectance of the unmarked part and the marked part is completely reversed, and between them, the binary electric signal 1,
The relationship between O is reversed.

Therefore, even when the above-mentioned blank paper and plastic film are used separately, the present invention can accurately distinguish whether a mark is present or not, regardless of the difference in material (difference in reflectance). 1 and 0 of the binary electrical signal are finally determined depending only on the
This can be achieved in a very simple way,
This will be explained in detail below with reference to the illustrated embodiment.

The entire scanning device A, which is directly used to carry out the method of the present invention, is installed in a frame 5, and first therein is a recording medium transport mechanism, that is, a mechanism for loading and transporting the organization program card 1, which is an information recording medium. To explain, there are sprocket wheels 61, 6 on the left and right on the frame 5.
A card feeding roller 6, which is a feeding member having a diameter r, is horizontally mounted so as to be rotatable.

The sprocket wheels 61, 6r have sprockets 6' protruding from the outer circumferential surface at a constant interval, which fit into the left and right perforations 1', 1'' of the editing or program card 1, and these left and right sprocket wheels 6 1,
6r and a card guide plate 8 with a U-shaped cross section arranged below between them, insert the card 1 from the pattern card slot 9 facing on the upper cover 2, ration 1','1'' to sprocket 6
By fitting the sprocket wheels 61 and 6r into the frame 5, the sprocket wheels 61 and 6r can support the card 1 in a U-shaped bent state, and in this supported state, the sprocket wheels 61 and 6r serve as a driving source for the transfer mechanism disposed on the right side of the frame 5. The card 1 is perforated 1' by being rotated by the pulse motor a.
, 1" in the direction of arrangement.

That is, the card feed roller 6 has a gear 10 fitted on its shaft 7 and a gear 11 fitted on the shaft of the pulse motor a.
By meshing with the pulse motor a, it is linked to the pulse motor a.

Therefore, the pulse motor a is capable of forward and reverse rotation, and the forward and reverse direction of the card feed roller 6 is determined depending on whether it is driven forward or backward, and thereby whether the card 1 is sent in the forward direction or not. (Bottom side of Figure 1) This determines whether to send in the opposite direction.

Further, a finger wheel 13 whose part is projected upward through the window hole of the upper cover 2 is fitted on the shaft 7,
The card 1 can also be transferred manually by placing a finger on the finger wheel 13 on the cabinet 2 and turning it.

As mentioned before, the card 1 is inserted through the pattern card slot 9 on the cover 2;
This is constructed by arranging the transparent plate 15 on the front side of the hanging portion 14 of the cover 2 so that an appropriate gap is created between the upright portion 15' at the rear end and the front surface of the hanging portion 14 to allow the card 1 to pass through. The card 1 inserted through the insertion slot 9, bent along the card guide plate 8, and entered under the cover 2 is then inserted into the outlet 16 (see FIG. 3) formed at the rear end of the cover 20. ) is now derived more outward.

Next, a traveling drive mechanism for automatically traveling the scanning member C to scan the card 1 horizontally in a straight line will be described.

Two upper and lower guide rods 17 and 18 are horizontally suspended in parallel to each other on the frame 5, and a scanning member C is mounted on these so as to be able to slide left and right.

That is, the scanning member C has left and right through holes provided in the main body of the running body 19 slidably fitted into the upper guide rod 17, and a bobbin integrally provided on the lower side of the running body 19. 20 is slidably fitted to the lower guide rod 18.

A coil 21 is wound around the bobbin 20, and a horizontally long permanent magnet 22 is placed slightly below the lower guide rod 18 in parallel therewith.

The entire length of the upper side of the permanent magnet 22 is an N pole, and the entire length of the lower side is an S pole.The lower guide rod 18 is made of a magnetic material, and when a current is passed through the coil 21, the current is changed. However, the permanent magnet 22 crosses the magnetic field that is constantly created, and the magnetic force acting between them causes the traveling body 19 to
Therefore, depending on the direction of the current flowing through the coil 21, the scanning member C automatically moves to the left or right along the guide rods 1.7 and 18 as guide means.

That is, the coil 21 and the permanent magnet 22 are
This constitutes a type of linear motor with 2 serving as a stator.

゜However, although the scanning member C is always located at the left stroke end (the position shown in Figure 1),
Sufficient current to run from the left stroke end to the right stroke end in connection with the travel of the carriage Y (for example, when reversing the travel of the carriage Y) and then immediately feedback travel from the right stroke end to the left stroke end. By automatically supplying the power to the coil 21, it is possible to perform one reciprocating movement from side to side without interruption.

A limit switch 23 for detecting reversal is provided at the right end of the frame 5, which corresponds to the right stroke end with respect to the scanning member C, while a limit switch 23 for detecting reversal is provided at the upper guide rod 17, which corresponds to the left stroke end of the scanning member C. Although the stopper 24 is fixed at the position, the guide rod 1
7 is horizontally mounted on the frame 5 so as to be able to slide left and right, and is biased rightward by a spring 26 at its left end, so that the scanning member C is pressed against the stopper 24 during backward movement (leftward movement). However, the impact is buffered by the spring 26, thereby preventing a reaction (rightward movement) when the stroke end on the left side is reached.

On the rear side of the scanning member C, as shown in FIG. Now, in order to scan one side of the card, a so-called photoelectric sensor is used, which consists of a reading element, that is, a light-emitting element, and a light-receiving element that receives reflected light that is reflected from the first side of the card and converts it into an electrical signal. d is attached.

As the scanning member C travels, its photoelectric sensor d optically scans the surface of the card horizontally in a straight line, and hereinafter the photoelectric sensor d will be referred to as a scanning sensor.

Note that the card 1 allows the scanning member C to move forward (rightward) and backward (
The scanning sensor d scans in both strokes (left row), but the electrical signals related to the scanning in both the forward and backward strokes are valid only for the forward stroke of the scanning member C, as will be described later. It is now taken out as .

Next, card 1 will be explained with reference to FIG. 1. On the white surface between the left and right perforations 1' and 1'', there is a knitting pattern recording area, that is, a knitting pattern entry field where the knitting pattern is recorded. 1p and the organization function information recording part on the right side, that is, the function mark recorder field 1 which is the part where the function mark is recorded.
f is the same color as the emitted light color of the light emitting element of the scanning sensor d and a color that the light receiving element does not discriminate (for example, red when a red light emitting diode is used as the light emitting element).
The grid dividing lines are displayed in advance using an appropriate display method such as printing.

In the above-mentioned knitting pattern entry field 1p, among the grid dividing lines composing it, the vertical lines are the dividing lines between the stitches, and the horizontal lines are the dividing lines between the knitting rows.

More specifically, in the knitting pattern entry field 1p, one minimum section, that is, one entry grid corresponds to one stitch,
Its horizontal arrangement, or row, corresponds to one knitting needle, and its vertical arrangement, or row, corresponds to a knitting stage (wale), and it is a so-called unit in which n horizontal rows of stitches constitute one group. When knitting a pattern, consider the vertical line at the left edge and the vertical line n vertical lines to the right as the boundary line, and draw a picture (knitting or pattern) between them according to the contested pattern to be knitted. is drawn solidly in black, for example, using an appropriate writing instrument such as a pencil.

For example, when knitting a unit pattern consisting of 48 stitches in a horizontal row by selecting 48 knitting needles as a group, the distance between the vertical line at the left end and the 48th vertical line from that This is to draw a picture.

At this time, as long as the outline of the picture is within the above range, the inside of the picture may be filled in completely without filling in the grids one by one.

This is because the reading is performed by sampling each filled grid, and this will be explained in detail later.

Further, the horizontal line of the function mark writer field 1f is on the same line as the horizontal line of the knitting pattern entry field 1p, and the vertical line thereof is parallel to the vertical line of the knitting pattern entry field 1p.

The function mark writer column 1f is used to mark an arbitrary entry grid when attempting to perform a required function operation such as operating a notification means for detecting thread exchange or determining the feeding direction of the card 1 itself ( For example, fill it in black).

As mentioned above, in the knitting pattern entry column 1p of the card 1, a knitting or pattern representing the unit pattern to be knitted is drawn solidly, and the scanning sensor d of the scanning member C normally draws this. Each stage of the grid is scanned horizontally in a straight line, and the electrical signal associated with each stage of scanning is a square wave corresponding to the form of the knitting pattern in the first stage of the grid, that is, the form of one horizontal scan of the knitting pattern. The electrical signal obtained by scanning does not have a one-to-one correspondence with the knitting needle to be selected, and the function mark model entered in the function mark column 1f, Same as the above knitting pattern ← It is read by the above scanning sensor d and becomes an electrical signal in the same electrical system, but these two types of electrical signals are separated from each other, and the electrical signal related to reading a knitting pattern is It is converted into a binary electric signal corresponding to the knitting needle in a one-to-one relationship, and the electric signal related to reading the function mark is also separated for each entry grid row (vertical row) in the function mark writer field 1f. Next, a sampling mechanism that performs such an operation, that is, a sampling operation, will be explained.

The frame 5 is located behind the traveling body 19 of the scanning member C.
, the horizontally long plate-shaped linear encoder 28 is connected to the guide rod 17.
, 1B and horizontally suspended.

The linear encoder 28 inserts a predetermined plurality of knitting or pattern sampling slits 28p for sampling the knitting pattern drawn in the knitting pattern entry field 1p on the card 1 into each grid example of the knitting pattern entry field 1p.
A predetermined plurality of function mark sampling slits 28f are bored in a one-to-one relationship, and a predetermined plurality of function mark sampling slits 28f are provided for sampling the function marks.
The function marks are drilled in one-to-one correspondence with each entry grid row in the function mark column 1f.

On the other hand, on the rear side of the traveling body 19 of the scanning member C, there is a photoelectric sensor for optically reading both of the two types of slits 28p and 28f, that is, a light emitting element that illuminates the front surface of the linear encoder 28 and its reflected light. A sampling sensor e consisting of a light receiving element that receives light and converts it into an electrical signal is attached.

Thus, as the scanning member C travels, the sampling sensor e outputs a pulse corresponding to the slit 2 8 p t 2 8 f, that is, a sampling pulse.
As in the case of the electrical signals related to the scanning of the scanning sensor d described above, only the sampling pulses related to the forward stroke of the scanning member C are taken out as valid ones. Along with being there,
Thereafter, the two types of sampling pulses, ie, the sampling pulse for sampling the knitting pattern and the sampling pulse for sampling the function mark, are separated from each other.

Thus, the electrical signals associated with one-stage scanning of the knitting pattern entry field 1p and the function mark recorder field 1f are sampled for each entry grid, but such sampling is performed for each entry grid in relation to the card 1. In order to ensure accuracy, the card guide plate has slits 8p and function marks corresponding to each entry grid row of the knitting pattern entry field 1p in a one-to-one relationship along the scanning line of the scanning sensor d. Slits }8f corresponding to each entry grid row in column 1f are bored in a 1:J relationship, and the scanning sensor d picks up marks on the card 1 for each slit through these slits. It is supposed to be done.

Therefore, the electrical signals related to reading the knitting pattern are
Each bit corresponds to each filling grid and therefore one knitting needle,
Also, depending on the presence or absence of marks in each entry grid, the binary number “
It is converted into a binary electrical signal with a predetermined number of bits that determines whether it is a 1 or a 0, and all the bits are stored in a predetermined memory sequentially from left to right, but the number of bits read from this is , by turning the finger wheel 29 for setting the number of needle selection units, which is partially exposed on the cover 2, to align the paper needle 31 of the movable body 300 with the scale of the scale plate 32 provided below the transparent plate 15; This is determined by the number indicated by the pointer 31, which in turn determines the number of needle selection units.Next, regarding the needle selection unit number setting mechanism that sets the number of needle selection units. explain.

The movable body 30 is mounted on the frame 5 so as to be able to slide left and right along a rail plate 33 horizontally suspended on the frame 5, and includes a right pulley 34r integral with the finger wheel 29. It is connected to a finger wheel 29 by a string 35 that is passed around a pulley 341 on the left side, and by turning this finger wheel 29, it can slide left and right.

A reflecting plate 36 is vertically provided on the movable body 30 and is in pressure contact with the front surface of the card guide plate 8.

The front surface of this reflector plate 36 is mirror-finished and has a much better light reflectance than the front surface of the guide plate 8 and the card 1 side.

Therefore, the scanning sensor d is connected to this reflector 36.
, the output voltage of the scanning sensor d (specifically, the output voltage of the light receiving element) suddenly increases.

However, if the output voltage of the scanning sensor d suddenly increases due to the above reasons, it is detected by a predetermined circuit and the sampling sensor e scans the slit 28p of the linear encoder 28. The sampling pulses obtained are counted by a counter from the first pulse until the predetermined circuit performs the above detection, and the counted value of this counter is stored in a predetermined memory. .

The above-mentioned memory storing the binary electrical signals related to the reading by the scanning sensor d is read out only for the stored number of bits as described above.

Therefore, the number of bits of the binary electric signal read out from this memory is determined by the number indicated by the scale of the scale plate 32 indicated by the pointer 31 of the moving body 300.

Note that the scale on the scale plate 32 is made to correspond to the horizontal arrangement of the entry grid in the knitting pattern entry field 1p of the card 1, and by looking at the pointer 31 through the transparent plate 15 and making it correspond to the card 1, It is easy to see how much of the card 1 can be effectively read out from the memory.

Then, the binary electrical signals stored as described above are read out repeatedly in sequence in accordance with the traveling timing of the carriage (not shown), and the effective operation of the left and right knitting needle selection mechanisms provided on the back side of the carriage is performed. The knitting needle is supplied to one of the electromagnets through a cord or the like, so that the knitting needle is selected (j or 0) according to the content of each bit of the read binary electric signal.

In the above, we have explained that the knitting pattern drawn in the card 10 knitting pattern entry field 1p is necessarily determined as a binary 1 or 0 depending on the presence or absence of marks, but as stated at the beginning, This is not necessarily determined by the presence or absence of a mark, but is determined by the material (light reflectance) of the card 1. Next,
The gist of the present invention will be explained in which, regardless of the material of the card 1, whether the mark is present or not, if the mark should be 1, it is always set to 1, and if no mark is to be set to 0, it is always set to 0.

FIG. 4 shows a circuit according to a first embodiment of the present invention, and FIG. 5 shows a circuit according to a second embodiment.

First, the first embodiment will be explained.

Now, assume that the above-mentioned card 1 is made to use either a normal blank paper or the above-mentioned polyacetate resin film (hereinafter referred to as a film).

As mentioned above, the relationship between the reflectance of the blank paper and the film is that marks and no marks are exactly opposite, but when considering the output power of the light receiving element of the scanning sensor d, there is a certain With regard to the voltage, blank paper has no mark when the voltage is higher than that voltage, and a mark when it is lower, while film, on the other hand, has a mark when it is higher and no mark when it is lower.

Therefore, the voltage corresponding to this boundary was confirmed in advance by experiment, and
Using this as a reference, the output voltage of the light-receiving element is distinguished from high to low, and before scanning, it is determined whether the unmarked area is higher or lower than the reference voltage, and based on this determination result, scanning is performed. If you decide which output voltage of the light-receiving element inside the paper is 1 in binary and which is O in binary, marks and no marks will be binary numbers with the same relationship for both blank paper and film. it is obvious.

The first embodiment is constructed based on the above-mentioned matters, and as shown in FIG. part,
Therefore, in order to detect the part that is always unmarked, a horizontally long no-mark detection slit 8n is provided at the left end of the card guide plate 8, further to the left of the left edge slit 8p. At the same time, a slit 28n for non-mark sampling is provided in the linear encoder 28 at a position corresponding to this.

These slits gn and 28n are connected to the scanning sensors d1 and 8n and 28n, respectively, until the scanning member C moves slightly to the right from the original position.
The sampling sensor e is set at a facing position and length.

On the other hand, in FIG. 4, 40 and 41 are the light emitting element and the light receiving element of the scanning sensor d, respectively, and the light receiving element 4
The output voltage of No. 1 is compared with a constant reference voltage determined experimentally as described above by the analog comparator 42.

Therefore, the comparator 42 outputs a voltage corresponding to the difference between the light receiving element output voltage and the reference voltage.
It is input to logic circuit 43.

The logic circuit 43 includes a control circuit that controls the running operation of the scanning member C, processes sampling pulses from the sampling sensor e (effectively extracts only the right stroke of the scanning member C), and performs other necessary controls. 44, a predetermined start signal is input when starting the scanning member C, and the processed sampling pulse is input manually.

Then, the logic circuit 43 controls the output voltage of the comparator 42 when the start signal is input, and therefore when the scanning member C starts to start, and when scanning the blank on the left side of the knitting pattern entry field 1p in the card 1. It is designed to logically judge high and low levels and remember whether it was high or low.

Thus, before the scanning member C effectively scans the knitting or pattern entry field 1p on the card 1, it is possible to determine whether the output voltage of the light receiving element 41 for the unmarked (ground color) portion of the card 10 is higher than the predetermined reference voltage. Discrimination between low and low
This is performed every time the scanning member C moves away from the original position, which is the left stroke end.

Based on this discrimination result, the subsequent output voltage of the comparator 42 is determined by the logic circuit 43 to be a binary value of 1 when the potential is high, 0 when the potential is low, or vice versa. The output of the light receiving element 41 obtained when the scanning member C is effectively scanning the knitting pattern entry field 1p and the function mark writer field 1f is converted into a signal, and the output of the light receiving element 41 is finally output by the logic circuit 43. When output and input to the control circuit 44, whether the card 1 is a blank sheet or a film, if the marked part is a binary 1, the unmarked part is a 0. It will become.

Next, please refer to FIG. 5 for a second embodiment of the present invention. To explain in detail, in this case, the reference voltage input to the comparator 42 is not predetermined as in the case of FIG. This is the measured voltage obtained by measuring the potential itself of the output voltage of the light receiving element 41 in the non-marked portion.

That is, the logic circuit 43' includes an A-D converter and a memory, and is inputted with a start signal obtained at the start of activation of the scanning member C from the control circuit 44 in the same manner as in the first embodiment. At this time, the output voltage from the comparator 42 is A-D converted and stored, and this stored digital data is restored to an analog voltage by the I)-A converter 45 and compared to the comparator 42. It is designed to be input as a reference voltage.

Therefore, while the scanning member C is running, the comparator 4
2, an electrical signal with a potential difference between marks and no marks is output, and this is converted into a binary electrical signal by the logic circuit 43' in the same way as in the first embodiment. There is.

In the first and second embodiments described above, the output voltage of the light receiving element 41 is determined for the unmarked portion of the card 10, and the voltage subsequently output from the light receiving element 41 is determined based on this determination result. We used a binary system for height and low, but in contrast, for example, in the blank space on the left side of the knitting pattern entry field 1p, mark a strip along the vertical line along the left edge of the entry field 1p in advance by printing or using a writing instrument. Even if the scanning sensor d reads this band-shaped mark, the output voltage of the light-receiving element 41 is determined, and the subsequent binary conversion of high and low voltages is performed based on this determination result. Substantially the same result as above can be obtained, and such a method is also an embodiment of the present invention.

As is clear from the above, the method of the present invention can be obtained by reading the unmarked part or marked part of the information recording medium (knitting program card in the embodiment) before effectively scanning information such as knitting patterns. The output voltage of the light-receiving element is determined in advance, and based on the determination result, which of the two high and low voltages is the output voltage of the light-receiving element during the effective scanning.
It controls whether the base number is 1 or O, and even if multiple types of information recording media with different light reflectances are used, it can correctly distinguish between marks and non-marks and generate binary electricity. It can be read as a signal.

[Brief explanation of drawings]

1 to 3 of the drawings show a scanning device directly used for carrying out the method of the present invention; FIG. 1 is a front view thereof, FIG. 2 is a plan view thereof, and FIG. 3 is a sectional view thereof. 4 and 5 are block diagrams showing the electrical configurations of the first and second embodiments of the method of the present invention, respectively. 1...Organization program card serving as an information recording medium, d...Scanning sensor, 40, 41.
...The light-emitting element and the light-receiving element of the scanning sensor, 42...Comparator for comparing the output voltage of the light-receiving element, 43, 43'...2 A logic circuit that converts into an electrical signal.

Claims (1)

[Claims] 1. On an information recording medium on which information such as a knitting pattern is recorded by displaying marks, a light emitting element that illuminates the surface of the information recording medium and a light receiving element that enters the reflected light and converts it into an electrical signal. In a scanning method of a knitting machine that optically scans with a scanning member, the above-mentioned light reception obtained by reading a non-marked part or a marked part of the above-mentioned information recording medium before effective scanning of information such as the above-mentioned knitting pattern, etc. The output voltage of the element is determined in advance, and based on the determination result, it is determined which of the output voltages of the light-receiving element during the effective scanning, which have two high and low voltages, should be set to 1 in binary. A scanning method for a knitting machine characterized by controlling whether