JP2010033262A - Number-of-terminal counting method and number-of-terminal counting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a number-of-terminal counting method which counts the number of chain-type terminals, without errors, through simple and low-cost composition. <P>SOLUTION: A terminal is counted up as one terminal when an equality P>L>T is satisfied and a first flag M and a second flag O are both in an ON state due to the ON state of the second flag O, wherein T represents a terminal width, P represents an interval between terminals and L represents a distance between a first photoelectric sensor 28 and a second photoelectric sensor 29. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a terminal number counting method and a terminal number counting apparatus for chained terminals in which a large number of terminals are arranged at predetermined intervals along the longitudinal direction of a strip-shaped carrier.

  A chain-type terminal is formed by punching a single band-shaped metal plate (conductive plate) into a predetermined shape using a molding die provided in a press working device, and bending the terminal expansion part connected to the carrier in the punched terminal original plate. It is obtained by processing (see, for example, Patent Document 1). The strip-shaped chain terminal obtained in this way is wound around a reel and stored and shipped.

  The chain-type terminals are usually shipped by being wound around a reel as a unit product having a predetermined number of terminals. The reel is wound by fixing the leading end of the carrier sent out from the press machine to the reel core.

  The winding amount of the chain type terminal is determined by counting the number of terminals. That is, when the number of terminals to be counted reaches a predetermined count value, it is possible to ship as a unit product by cutting the carrier of the chain terminal.

For example, as shown in FIG. 7, the terminal 33 that moves together with the carrier 32 of the chain type terminal 31 passes through the optical path (beam b3) between the light emitting unit 34 and the light receiving unit 35 of the photoelectric sensor. This is done according to the number of times of blocking.
Japanese Patent Laid-Open No. 11-8038

  However, the conventional method for counting the number of terminals of a chained terminal may cause a chattering phenomenon of counting, that is, receiving a vibration from the transport system while winding the chained terminal on a reel. As a result, the chain type terminal vibrates, and the photoelectric sensor counts the same terminal a plurality of times, resulting in a terminal counting error.

  The cause of the chattering phenomenon will be described in more detail. The terminal 33 of the chain-type terminal 31 normally moves along the normal path X (state shown by the solid line in FIG. 7) to block the beam b3. However, the terminal 33 of the chain-type terminal 31 swings in the direction indicated by the dotted line in FIG. 7 due to the vibration from the transport system of the winding device, so that the terminal 33 once blocks from the beam b3 and then blocks the beam b3 again. The operation of returning to the position is repeated. For this reason, the photoelectric sensor detects the terminal 33 twice or more times, and the counter miscounts the terminal. As a result, there is a risk that the chain type terminal will be shipped without the winding amount of the chain type terminal with respect to the take-up reel becoming the specified amount, and the reliability of the product will be lost.

  On the other hand, in order to avoid such miscounting of terminals in the chain type terminal, a guide member for suppressing vibration of the chain type terminal has been conventionally arranged in the vicinity of the optical path of the photoelectric sensor on one side or both sides of the chain type terminal. There have been attempts to do so. However, there are inconveniences such as a complicated structure of the winding device for chained terminals, an increase in size and an increase in the number of parts, and an increase in cost is unavoidable.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to cause chattering in the detection output of the photoelectric sensor accompanying the vibration of the chain terminal during winding of the chain terminal on the reel. Even if this is the case, it is an object of the present invention to provide a terminal number counting method and a terminal number counting device for a chained terminal that can perform terminal counting without error and can realize this counting with a simple and low-cost configuration.

In order to achieve the above-described object, the terminal number counting method according to the present invention is characterized by the following (1) to (2).
(1) A terminal number measuring method for measuring the number of terminals of a belt-like chain terminal wound on a winding roll,
A first beam output in a crossing direction intersecting the feed direction from a first terminal passage detection photoelectric sensor disposed along the feed direction of the chain-type terminals to the winding roll; and the feed The feed with the second beam output in the crossing direction from the second terminal passage detection photoelectric sensor arranged in front of the feed direction with respect to the first terminal passage detection photoelectric sensor along the direction The distance L in the direction is the distance T between the front end portion on the front side in the feed direction and the rear end portion on the rear side in the feed direction in each terminal constituting the chain type terminal, and the adjacent first points constituting the chain type terminal. The distance P from the rear end portion of the first terminal located on the front side in the feed direction to the front end portion of the second terminal located on the rear side in the feed direction among the first terminal and the second terminal. On the other hand, the relationship of P>L> T is satisfied
When the first terminal passing detection photoelectric sensor detects that the first terminal sent in the feed direction has blocked the first beam, the first flag is turned on from the off state. Transition to the state,
When the second terminal passage detection photoelectric sensor detects that the first terminal sent in the feed direction has blocked the second beam, the second flag is turned on from the off state. Transition to the state,
When the first flag and the second flag are both turned on when the second flag is turned on, the number of terminals is incremented by one, and the first flag From the on state to the off state,
When the first terminal passing detection photoelectric sensor detects that the second terminal sent in the feed direction has blocked the first beam, the first flag is turned on from an off state. And the second flag is changed from the on state to the off state.
thing.
(2) A method for measuring the number of terminals configured as described in (1) above,
The first beam output by the first terminal passage detection photoelectric sensor at the first beam width is one end edge on the front side in the feed direction, and the second terminal passage detection photoelectric sensor is the second beam. The first beam output at the first beam width by the distance Li from the one end edge on the rear side in the feed direction of the second beam output at the width and the first terminal passage detection photoelectric sensor. The other end edge on the rear side in the feed direction in the beam of the second beam and the other end edge on the front side in the feed direction in the second beam output by the second terminal passage detection photoelectric sensor at the second beam width. The distance Lo satisfies the relationship of P> Lo and Li> T with respect to the distance T and the distance P.
thing.

According to the configuration of (1) above, even when chattering occurs in the detection output of the photoelectric sensor due to the vibration of the chain type terminal during winding of the chain type terminal on the reel, the terminal count is performed. Can be implemented without error. Further, in order to prevent chattering, the intended purpose can be achieved only by avoiding a large and expensive guide member for a chain terminal and using an inexpensive guide member.
According to the configuration of (2) above, even if a photoelectric sensor with a wide beam width has to be applied to the terminal number counting device in order to reduce the cost of the terminal number counting device of the chain type terminal, Can be counted without error.

In order to achieve the above-described object, the terminal number counting device according to the present invention is characterized by the following (3) to (4).
(3) A terminal number counting device for measuring the number of terminals of a chain-type terminal wound on a winding roll,
A terminal number counting device for measuring the number of terminals of a belt-like chain terminal wound on a winding roll,
A first terminal passing detection photoelectric sensor disposed along the feeding direction of the chain terminal to the winding roll;
A second terminal passage detection photoelectric sensor disposed on the front side in the feed direction from the first terminal passage detection photoelectric sensor along the feed direction;
A storage unit for storing an on / off state of the first flag and an on / off state of the second flag;
In response to detection signals from the first terminal passage detection photoelectric sensor and the second terminal passage detection photoelectric sensor, the first flag and the second flag are turned on and off to store the memory. An arithmetic unit to be recorded in the unit,
With
A first beam output from the first terminal passage detection photoelectric sensor in a crossing direction intersecting the feeding direction, and a second beam output from the second terminal passage detection photoelectric sensor in the crossing direction. The distance L in the feed direction with respect to the beam is the distance T between the front end portion on the front side in the feed direction and the rear end portion on the rear side in the feed direction in each terminal constituting the chain type terminal, and the chain type terminal The front end portion of the second terminal located on the rear side in the feed direction from the rear end portion of the first terminal located on the front side in the feed direction among the adjacent first terminals and second terminals constituting Satisfying the relationship of P>L> T with respect to the distance P to
The computing unit is
When the first terminal passing detection photoelectric sensor detects that the first terminal sent in the feed direction blocks the first beam, the first flag is turned on from an off state. To the state of
When the second terminal passage detection photoelectric sensor detects that the first terminal sent in the feed direction has blocked the second beam, the second flag is turned on from the off state. To the state of
When the first flag and the second flag are both turned on when the second flag is turned on, the number of terminals is incremented by one, and the first flag When the first terminal passing detection photoelectric sensor detects that the second terminal sent in the feed direction has blocked the first beam. The first flag is changed from an off state to an on state, and the second flag is changed from an on state to an off state.
thing.
(4) A terminal number coefficient device having the configuration of (3) above,
The first beam output by the first terminal passage detection photoelectric sensor at the first beam width is one end edge on the front side in the feed direction, and the second terminal passage detection photoelectric sensor is the second beam. The first beam output at the first beam width by the distance Li from the one end edge on the rear side in the feed direction of the second beam output at the width and the first terminal passage detection photoelectric sensor. The other end edge on the rear side in the feed direction in the beam of the second beam and the other end edge on the front side in the feed direction in the second beam output by the second terminal passage detection photoelectric sensor at the second beam width. The distance Lo satisfies the relationship of P> Lo and Li> T with respect to the distance T and the distance P.
thing.

According to the configuration of (3) above, even when the chained terminal is being wound around the reel, even if chattering may occur in the detection output of the photoelectric sensor due to the vibration of the chained terminal, the terminal count is performed. Can be implemented without error. Further, in order to prevent chattering, the intended purpose can be achieved by avoiding a large and expensive guide member for a chain type terminal.
According to the configuration of (4) above, even if a photoelectric sensor having a wide beam width has to be applied to the terminal number counting device in order to reduce the cost of the terminal number counting device of the chain type terminal, Can be counted without error.

  According to the present invention, while simplifying the terminal guide provided in the vicinity of the photoelectric sensor to prevent the vibration of the long chain terminal, the terminal vibration occurs immediately after the terminal enters the photoelectric sensor beam. However, it is possible to avoid the counting of the number of terminals based on the chattering of the photoelectric sensor output, and to realize the terminal detection and the counting of the number of terminals with low cost and high accuracy.

  The present invention has been briefly described above. The details of the present invention will be further clarified by reading through the best mode for carrying out the invention described below with reference to the accompanying drawings.

  Hereinafter, a preferred embodiment of a terminal number counting method for chained terminals according to the present invention will be described with reference to the drawings. In addition, the terminal number counting method of the chain type terminal of the present embodiment is a process in which the chain type terminal manufactured in a chain type by a press machine is wound around a reel at a predetermined interval along the longitudinal direction of the belt-like carrier. This is implemented using a terminal measuring device of a chain type terminal that counts a large number of arranged terminals.

(First embodiment)
FIG. 1 is a schematic configuration diagram of a chain type terminal manufacturing system that implements a method for measuring the number of terminals of a chain type terminal according to an embodiment of the present invention. FIG. 2 is a configuration diagram of a chain type terminal. FIG. 2 (b) is an arrow view when the carrier of the chain terminal is viewed from the side, FIG. 2 (b) is an arrow view when the carrier of the chain terminal is viewed from the side, and FIG. FIG. 4 is a timing chart for explaining a method for counting the number of terminals of chained terminals, and FIG. 5 is an explanatory diagram for explaining a method of counting the number of terminals of chained terminals.

  For example, as shown in FIG. 1, the terminal count device for the chain terminal is installed in a terminal winding device 21 of the chain terminal manufacturing system. In the chain-type terminal manufacturing system, a strip-shaped material (brass) 12 wound around a supply roll 11 is sequentially fed to a press machine 15 through a guide roll 13 and a guide member 14 at a constant pitch. The press machine 15 punches the fed strip-shaped material 12 into a predetermined shape using a molding die 16, and further performs a bending process or the like, whereby the strip-shaped carrier 17a as shown in FIG. Thus, a chain-type terminal 17 is obtained in which a large number of terminals 17b are connected in a direction orthogonal to the longitudinal direction.

  The chain-type terminal 17 is sent to the terminal number counting device 22 in the winding device 21 through the guide roll 18, the looseness detection unit 19, and the guide roll 20. The terminal number counting device 22 counts the number of terminals of the chain type terminal 17 in accordance with a counting method described later, and winds it around the winding roll 24 via the roll 23.

  The chain-type terminal 17 is formed by arranging a large number of terminals 17b at predetermined intervals along the longitudinal direction of the continuous band-shaped carrier 17a as described above. Each terminal 17b is cut and separated from the carrier 17a. Thereafter, in one terminal 17b, the distance between the front end portion a on the front side and the rear end portion b on the rear side in the feed direction of the chain-type terminal 17 (the direction of arrow Y in FIG. In addition, the distance from the rear end b of one terminal 17b at the front in the feed direction to the front end a of one terminal 17b at the rear in the feed direction in the adjacent two terminals 17b is the inter-terminal width. It shall be labeled as “P”.

  As illustrated in FIG. 3, the terminal coefficient device 22 includes a sensor unit 25, a calculation unit (CPU) 26, a counter 27, and a storage unit (memory). The sensor unit 25 includes two photoelectric sensors 28 and 29, and the first photoelectric sensor 28 for detecting the passage of the terminal 17 b has the light emitting unit 28 a and the light receiving unit 28 b orthogonal to the feeding direction of the chain-type terminal 17. Similarly, the second photoelectric sensor 29 for detecting the passage of the terminal 17b is arranged so that the light emitting section 29a and the light receiving section 29b of the beam light are opposed to each other in a direction orthogonal to the feeding direction of the chain terminal 17. The first photoelectric sensor 28 and the second photoelectric sensor 29 are arranged at a predetermined distance along the winding path of the chain terminal 17 conveyed as described above. The distance L between the first photoelectric sensor 28 and the second photoelectric sensor 29 is defined by the distance from the beam b1 output from the first photoelectric sensor 28 to the beam b2 output from the second photoelectric sensor 29. In FIG. 5, the width of the beam output from the first photoelectric sensor 28 and the second photoelectric sensor 29 is extremely smaller than the width T of the terminal 17, so that the distance L is output from the first photoelectric sensor 28. It can be approximated to the distance from the beam b1 to the beam b2 output from the second photoelectric sensor 29.

  In the terminal number counting method for chained terminals according to the present invention, the distance “L” between the first photoelectric sensor 28 and the second photoelectric sensor 29 needs to satisfy the following relationship. That is, the terminal interval “P” between two adjacent terminals 17 b> the distance “L” between the first photoelectric sensor 28 and the second photoelectric sensor 29> the terminal width “T” of the terminal 17 b. In the method of counting the number of terminals of a chained terminal according to the present invention, a chained terminal satisfying the terminal interval “P” of two adjacent terminals 17b> the terminal width “T” of the terminal 17b is Can be a target. Hereinafter, in the processing flow for realizing the terminal number counting method of the chain type terminal by the terminal number counting device 22, the distance “L” between the first photoelectric sensor 28 and the second photoelectric sensor 29 must satisfy the above relationship. This will be described with reference to FIGS.

  As shown in FIG. 1, the chain type terminal 17 sent from the press machine 15 to the winding device 21 is guided into the terminal number counting device 22. In the terminal number counting device 22, as shown in FIG. 5, the first photoelectric sensor 28 and the second photoelectric sensor 29 are in the inter-beam distance (more strictly speaking, in the feeding direction (arrow Y direction)). The distance between the center of the beam b1 and the center of the beam b2) is L.

  Now, it is assumed that the front end a of one terminal 17b reaches the first beam b1 of the first photoelectric sensor 28 in the process in which the chain type terminal 17 is sent to the winding device side. At this time, since the first beam b1 is interrupted by the one terminal 17b, the intensity detected by the first photoelectric sensor 28 is reduced, and the calculation unit 26 performs the first operation as shown in FIG. An output change L from one photoelectric sensor 28 is detected. When detecting the output change L from the first photoelectric sensor 28, the arithmetic unit 26 turns on the flag M indicating the output change state of the first photoelectric sensor 28 from that time point as shown in FIG. 4C. The state is stored in the storage unit 30 (step S1).

  Thereafter, one terminal 17b moves in the feeding direction, but the intensity detected by the first photoelectric sensor 28 decreases during the period in which the first beam b1 is interrupted, and the calculation unit 26 is shown in FIG. As shown in (a), the output change L from the first photoelectric sensor 28 is continuously detected. At this time, the flag M stored in the storage unit 30 is kept on as shown in FIG. 4C (step S2).

  Thereafter, it is assumed that the rear end b of one terminal 17b reaches the first beam b1 of the first photoelectric sensor 28. At this time, since one terminal 17b passes through the first beam b1 and does not block the first beam b1, the intensity detected by the first photoelectric sensor 28 increases, and the calculation unit 26 performs the operation shown in FIG. As shown in a), the output change L from the first photoelectric sensor 28 is not detected. On the other hand, even if the calculation unit 26 stops detecting the output change L from the first photoelectric sensor 28, as shown in FIG. 4C, the calculation unit 26 turns on the flag M indicating the output change state of the storage unit 30. The state is continued (step S3).

  Subsequently, the front end portion a of the one terminal 17 b reaches the second beam b 2 of the second photoelectric sensor 29. Note that the distance “L” between the first photoelectric sensor 28 and the second photoelectric sensor 29 satisfies the relationship “distance“ L ”> terminal width“ T ”of the terminal 17 b, and thus one terminal 17 b moves. In this process, the one terminal 17b does not simultaneously block the first beam b1 of the first photoelectric sensor 28 and the second beam b2 of the second photoelectric sensor 29. Further, since the distance “L” between the first photoelectric sensor 28 and the second photoelectric sensor 29 satisfies the relationship of the terminal interval “P”> distance “L” between the two adjacent terminals 17b, one terminal The next one terminal 17b does not block the first beam b1 of the first photoelectric sensor 28 until 17b passes through the second beam b2 of the second photoelectric sensor 29. That is, during the period in which the first one terminal 17b passes the second beam b2 of the second photoelectric sensor 29, the next one terminal 17b is the first beam b1 of the first photoelectric sensor 28. Never shut off.

  When the front end portion a of the one terminal 17b reaches the second beam b2 of the second photoelectric sensor 29, the second beam b2 is blocked by the one terminal 17b. As shown in FIG. 4B, the calculation unit 26 detects an output change N from the first photoelectric sensor 28. When detecting the output change N from the second photoelectric sensor 29, the arithmetic unit 26 turns on the flag O indicating the output change state of the second photoelectric sensor 29 from that time point, as shown in FIG. The state is stored in the storage unit 30. At this time, when the flag O is changed from the off state to the on state and the flag M and the flag O stored in the storage unit 30 are both turned on, the arithmetic unit 26 is connected to the chained terminal. Count the number “1”. Then, as shown in FIG. 4C, the flag M which has been turned on and stored in the storage unit 30 is reset to the off state (step S4).

  Thereafter, one terminal 17b moves in the feeding direction, but the intensity detected by the second photoelectric sensor 29 decreases during the period in which the second beam b2 is interrupted, and the calculation unit 26 is shown in FIG. As shown in (b), the output change N from the second photoelectric sensor 29 is continuously detected. At this time, the flag O stored in the storage unit 30 is kept on as shown in FIG. 4C (step S5).

  Thereafter, it is assumed that the rear end b of one terminal 17b reaches the second beam b2 of the second photoelectric sensor 29. At this time, since one terminal 17b passes through the second beam b2 and does not block the second beam b2, the intensity detected by the second photoelectric sensor 29 is increased, and the calculation unit 26 operates as shown in FIG. As shown in b), the output change M from the second photoelectric sensor 29 is not detected. On the other hand, as shown in FIG. 4D, the calculation unit 26 turns on the flag O indicating the output change state of the storage unit 30 even when the output change M from the second photoelectric sensor 29 is not detected. The state is continued (step S6).

  Thereafter, it is assumed that the front end portion a of the next one terminal 17b reaches the first beam b1 of the first photoelectric sensor 28. At this time, since the first beam b1 is interrupted by the next one terminal 17b, the intensity detected by the first photoelectric sensor 28 is reduced, and the calculation unit 26 operates as shown in FIG. The output change L from the first photoelectric sensor 28 is detected. When detecting the output change L from the first photoelectric sensor 28, the arithmetic unit 26 turns on the flag M indicating the output change state of the first photoelectric sensor 28 from that time point as shown in FIG. 4C. As shown in FIG. 4D, the flag O stored in the storage unit 30 in the on state is reset to the off state. At this time, both the flag M and the flag O stored in the storage unit 30 are turned on by the transition of the flag M from the off state to the on state. Do not count numbers. To the last, the arithmetic unit 26 determines the number of terminals of the chain-type terminals when both the flag M and the flag O stored in the storage unit 30 are turned on by the transition of the flag O from the off state to the on state. Is incremented by "1" (step S1 '). Thereafter, the processes from step S1 to S1 'are repeated.

  Since the distance “L” between the first photoelectric sensor 28 and the second photoelectric sensor 29 satisfies the relationship of terminal interval “P”> distance “L” between two adjacent terminals 17 b, one terminal 17 b Until the second beam b2 of the second photoelectric sensor 29 passes, the next one terminal 17b does not block the first beam b1 of the first photoelectric sensor 28. That is, the period when the first one terminal 17b blocks the second beam b2 of the second photoelectric sensor 29, and the next one terminal 17b transmits the first beam b1 of the first photoelectric sensor 28. There is no overlap between the period of blocking. Further, the calculation unit 26 does not count the number of chained terminals based on the output changes L and M of the intensity detected by the photoelectric sensors 28 and 29, but only when both the flags M and O are turned on. Count the number of terminals. In the present invention, this configuration allows the calculation unit 26 to count the number of terminals only once for each terminal 17b. Therefore, during the winding of the chained terminal to the reel, the chained terminal is vibrated. Thus, even if chattering occurs in the detection output of the photoelectric sensor, terminal counting can be performed without error.

  For example, consider a case where one terminal 17b vibrates and chattering occurs in the output change L from the first photoelectric sensor 28 shown in FIG. The calculation unit 26 does not perform counting during the period in which the output change L from the first photoelectric sensor 28 is detected, and performs only the process of turning on the flag M in the storage unit 30. For this reason, chattering that occurs in the output change L does not affect the counting of the number of chained terminals. Further, consider a case where one terminal 17b vibrates and chattering occurs in the output change N from the second photoelectric sensor 29 shown in FIG. The calculation unit 26 performs counting in a period in which the output change N from the second photoelectric sensor 29 is detected. Once the calculation unit 26 turns on the flag O of the storage unit 30 and counts up “1”, the flag M is turned off. The flag M is not turned on until the next one terminal 17b blocks the first beam b1 of the first photoelectric sensor 28, and the first one terminal 17b is the second photoelectric sensor. Since the next one terminal 17b does not block the first beam b1 of the first photoelectric sensor 28 during the period of passing the 29 second beam b2, how much the output change N is chattered. Even if it occurs, there is only one opportunity to count per output change N. Therefore, even when the chained terminal is wound on the reel and chattering occurs in the detection output of the photoelectric sensor due to the vibration of the chained terminal, the terminal count can be performed without error.

  Again, if the distance “L” between the first photoelectric sensor 28 and the second photoelectric sensor 29 is equal to or smaller than the terminal width “T” of the terminal 17b, the front end side of the terminal 17b and Since the beams of the first photoelectric sensor 28 and the second photoelectric sensor 29 are simultaneously blocked on the rear end side, that is, the flag M and the flag O of the storage unit 30 are turned on at the same time. When chattering occurs in the detection output of the photoelectric sensor, the terminals cannot be counted accurately. For this reason, the distance “L” between the first photoelectric sensor 28 and the second photoelectric sensor 29 needs to satisfy the relationship of L> T with respect to the terminal width “T” of the terminal 17b.

  In addition, when the distance “L” between the first photoelectric sensor 28 and the second photoelectric sensor 29 is equal to or larger than the terminal interval “P” between the two adjacent terminals 17b, the first one terminal 17b blocks the second beam b2 of the second photoelectric sensor 29, and the next one terminal 17b blocks the first beam b1 of the first photoelectric sensor 28, that is, the flag M of the storage unit 30. Since the flag O is turned on at the same time, when the chattering occurs in the detection output of the photoelectric sensor, the terminals cannot be counted accurately. For this reason, the distance “L” between the first photoelectric sensor 28 and the second photoelectric sensor 29 needs to satisfy the relationship of P> L with respect to the terminal interval “P” between the two adjacent terminals 17b.

  As described above, according to the method for counting the number of terminals of the chain type terminal according to the embodiment of the present invention, no matter how much the output changes L and N of the photoelectric sensor are chattered, there is only one opportunity to count each output change. not exist. Therefore, even when the chained terminal is wound on the reel and chattering occurs in the detection output of the photoelectric sensor due to the vibration of the chained terminal, the terminal count can be performed without error.

(Second Embodiment)
Subsequently, a method for counting the number of terminals of a chained terminal according to another embodiment of the present invention will be described in detail. In the first embodiment, the case has been described in which the beam width from the photoelectric sensors 28 and 29 is sufficiently smaller than the terminal width “T” of the terminal 17 b and the beam width is not considered. However, it is conceivable that a photoelectric sensor having a wide beam width must be applied to the terminal number counting device in order to reduce the cost of the terminal number counting device of the chain type terminal. For this reason, in the second embodiment, a case where the width of the beam is considered will be described. In addition, what is assigned the same reference numeral as the configuration described in the first embodiment is as described in the first embodiment, and thus the description thereof is omitted. FIG. 6 is an explanatory diagram for explaining another terminal counting method for chained terminals. FIG. 6A is an explanatory diagram for explaining a relational expression that the distance “Li” should satisfy, and FIG. It is explanatory drawing explaining the relational expression which distance "Lo" should satisfy | fill.

  As shown in FIGS. 6A and 6B, the first beam b1 of the first photoelectric sensor 28 and the second beam b2 of the second photoelectric sensor 29 are respectively set to a predetermined beam width A, Suppose you have B. The first photoelectric sensor 28 outputs a beam b1 at a beam width A sandwiched by one end edge c on the front side in the feed direction (arrow Y direction) and one end edge d on the rear side in the feed direction, and the second photoelectric sensor 29 The beam b2 is output at a beam width B sandwiched by one end edge e on the front side in the feed direction (arrow Y direction) and one end edge f on the rear side in the feed direction. Hereinafter, a distance from one end edge c of the first beam b1 output from the first photoelectric sensor 28 to one end edge f of the second beam b2 output from the second photoelectric sensor 29 is referred to as “Li”. A distance from one end edge d of the first beam b1 output from the first photoelectric sensor 28 to one end edge e of the second beam b2 output from the second photoelectric sensor 29 is referred to as “Lo”.

  In the terminal type counting method for chained terminals according to the present invention, one end of the second beam b2 output from the second photoelectric sensor 29 from one end edge c of the first beam b1 output from the first photoelectric sensor 28. The distance “Li” to the edge f needs to satisfy the following relationship. That is, “Li”> the terminal width “T” of the terminal 17b. The distance “Lo” from one end edge d of the first beam b1 output from the first photoelectric sensor 28 to one end edge e of the second beam b2 output from the second photoelectric sensor 29 is expressed by the following relationship: It is necessary to satisfy. That is, the terminal interval “P”> “Lo” between two adjacent terminals 17b.

  The distance “Li” from one end edge c of the first beam b1 output from the first photoelectric sensor 28 to one end edge f of the second beam b2 output from the second photoelectric sensor 29 is the terminal width of the terminal 17b. When equal to or smaller than “T”, the beams of the first photoelectric sensor 28 and the second photoelectric sensor 29 are simultaneously blocked on the front end side and the rear end side of the terminal 17b, that is, the storage unit. Since 30 flags M and O are turned on at the same time, when chattering occurs in the detection output of the photoelectric sensor, the terminals cannot be counted accurately. For this reason, the distance “Li” needs to satisfy the relationship Li> T with respect to the terminal width “T” of the terminal 17b.

  Further, the distance “Lo” from the one end edge d of the first beam b1 output from the first photoelectric sensor 28 to the one end edge e of the second beam b2 output from the second photoelectric sensor 29 is 2 adjacent to each other. Even when the terminal interval “P” of the two terminals 17b is equal to or larger than the terminal interval “P”, the first one terminal 17b blocks the second beam b2 of the second photoelectric sensor 29 and the next one terminal 17b In order to block the first beam b1 of the first photoelectric sensor 28, that is, the flag M and the flag O of the storage unit 30 are turned on at the same time, chattering occurs in the detection output of the photoelectric sensor. In this case, the terminals cannot be counted accurately. For this reason, “Lo” needs to satisfy the relationship of P> Lo with respect to the terminal interval “P” between two adjacent terminals 17b.

  In summary, in the terminal number counting method for chained terminals according to the present invention in consideration of the beam width, the distances “Li” and “Lo” must satisfy the following relationship. That is, the terminal interval “P”> “Lo” between two adjacent terminals 17b and “Li”> the terminal width “T” of the terminal 17b. The processing flow for realizing the terminal number counting method for chained terminals by the terminal number counting device 22 is the same as the processing flow described in the first embodiment.

  As described above, according to the terminal number counting method of the chain type terminal according to the second embodiment of the present invention, even if a photoelectric sensor having a wide beam width has to be applied to the terminal number counting device, how much of the photoelectric sensor Even if chattering occurs in the output changes L and N, there is only one opportunity to count each output change. Therefore, even when the chained terminal is wound on the reel and chattering occurs in the detection output of the photoelectric sensor due to the vibration of the chained terminal, the terminal count can be performed without error. As a result, it is possible to contribute to an improvement in counting accuracy while preventing erroneous counting of the terminal 17b when winding the chain terminal 17. Further, since it is not necessary to use a member for guiding the terminals to prevent the vibration of the chain-type terminals, it is possible to simplify the terminal number counting device and contribute to low cost.

  In the conventional terminal number counting method, in order to prevent erroneous counting due to chattering, the difference between the intensity detected when the photoelectric sensor is blocked by the terminal 17b and the intensity detected when the beam is not blocked is large. The part of the terminal 17b is irradiated with the beam, or during the period when the terminal blocks the beam, the part of the terminal 17b is less likely to be received by the light receiving unit 29b of the photoelectric sensor. Although it was necessary to irradiate the beam, according to the method for counting the number of terminals of the chain type terminal of the present invention, the number of terminals is counted in a state where the beam from the photoelectric sensor is applied to an arbitrary position of the terminal 17b. Can do. Further, a penetration portion that is penetrated by a beam from the photoelectric sensor is formed in a part of the terminal 17b, and the beam penetrates the penetration portion of the terminal 17b that is moving in the feeding direction and reaches the light receiving portion 29b of the photoelectric sensor. Even so, it is possible to prevent multiple count-ups that have occurred in the conventional method for counting the number of terminals. For this reason, the terminal number counting method of the present invention counts the number of terminals in a state where the beam from the photoelectric sensor is applied to an arbitrary portion of the terminal 17b even when the through-hole is formed in the terminal 17b. be able to.

It is a schematic block diagram of the chain type terminal manufacturing system which has the terminal number measuring device of the chain type terminal which concerns on this invention. 2A is an arrow view when the carrier of the chain terminal is viewed from above, and FIG. 2B is an arrow view when the carrier of the chain terminal is viewed from the side. It is a block diagram which shows notionally the terminal number measuring device of the chain type terminal which concerns on this invention. It is a timing chart for demonstrating the terminal number counting method of the chain type terminal which concerns on this invention. It is explanatory drawing for demonstrating the terminal number counting method of the chain type terminal which concerns on this invention. FIG. 6A is an explanatory diagram for explaining a relational expression that the distance “Li” should satisfy, and FIG. 6B is an explanatory view for explaining a relational expression that the distance “Lo” should satisfy. It is explanatory drawing which shows the terminal number counting method of the conventional chain type terminal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Supply roll 12 Material 15 Press machine 16 Molding die 17 Chain type terminal 17a Carrier 17b Terminal 21 Winding device 22 Terminal number counting device 24 Winding device 26 Calculation part 27 Counter 28 First photoelectric sensor 29 2nd photoelectric sensor Sensor 30 memory

Claims (4)

A terminal number measuring method for measuring the number of terminals of a belt-like chained terminal wound on a winding roll,
A first beam output in a crossing direction intersecting the feed direction from a first terminal passage detection photoelectric sensor disposed along the feed direction of the chain-type terminals to the winding roll; and the feed The feed with the second beam output in the crossing direction from the second terminal passage detection photoelectric sensor arranged in front of the feed direction with respect to the first terminal passage detection photoelectric sensor along the direction The distance L in the direction is the distance T between the front end portion on the front side in the feed direction and the rear end portion on the rear side in the feed direction in each terminal constituting the chain type terminal, and the adjacent first points constituting the chain type terminal. The distance P from the rear end portion of the first terminal located on the front side in the feed direction to the front end portion of the second terminal located on the rear side in the feed direction among the first terminal and the second terminal. On the other hand, the relationship of P>L> T is satisfied
When the first terminal passing detection photoelectric sensor detects that the first terminal sent in the feed direction has blocked the first beam, the first flag is turned on from the off state. Transition to the state,
When the second terminal passage detection photoelectric sensor detects that the first terminal sent in the feed direction has blocked the second beam, the second flag is turned on from the off state. Transition to the state,
When the first flag and the second flag are both turned on when the second flag is turned on, the number of terminals is incremented by one, and the first flag From the on state to the off state,
When the first terminal passing detection photoelectric sensor detects that the second terminal sent in the feed direction has blocked the first beam, the first flag is turned on from an off state. And the second flag is changed from the on state to the off state.
A method for measuring the number of terminals. The first beam output by the first terminal passage detection photoelectric sensor at the first beam width is one end edge on the front side in the feed direction, and the second terminal passage detection photoelectric sensor is the second beam. The first beam output at the first beam width by the distance Li from the one end edge on the rear side in the feed direction of the second beam output at the width and the first terminal passage detection photoelectric sensor. The other end edge on the rear side in the feed direction in the beam of the second beam and the other end edge on the front side in the feed direction in the second beam output by the second terminal passage detection photoelectric sensor at the second beam width. The distance Lo satisfies the relationship of P> Lo and Li> T with respect to the distance T and the distance P.
The method of measuring the number of terminals according to claim 1. A terminal number counting device for measuring the number of terminals of a belt-like chain terminal wound on a winding roll,
A first terminal passing detection photoelectric sensor disposed along the feeding direction of the chain terminal to the winding roll;
A second terminal passage detection photoelectric sensor disposed on the front side in the feed direction from the first terminal passage detection photoelectric sensor along the feed direction;
A storage unit for storing an on / off state of the first flag and an on / off state of the second flag;
In response to detection signals from the first terminal passage detection photoelectric sensor and the second terminal passage detection photoelectric sensor, the first flag and the second flag are turned on and off to store the memory. An arithmetic unit to be recorded in the unit,
With
A first beam output from the first terminal passage detection photoelectric sensor in a crossing direction intersecting the feeding direction, and a second beam output from the second terminal passage detection photoelectric sensor in the crossing direction. The distance L in the feed direction with respect to the beam is the distance T between the front end portion on the front side in the feed direction and the rear end portion on the rear side in the feed direction in each terminal constituting the chain type terminal, and the chain type terminal The front end portion of the second terminal located on the rear side in the feed direction from the rear end portion of the first terminal located on the front side in the feed direction among the adjacent first terminals and second terminals constituting Satisfying the relationship of P>L> T with respect to the distance P to
The computing unit is
When the first terminal passing detection photoelectric sensor detects that the first terminal sent in the feed direction blocks the first beam, the first flag is turned on from an off state. To the state of
When the second terminal passage detection photoelectric sensor detects that the first terminal sent in the feed direction has blocked the second beam, the second flag is turned on from the off state. To the state of
When the first flag and the second flag are both turned on when the second flag is turned on, the number of terminals is incremented by one, and the first flag When the first terminal passing detection photoelectric sensor detects that the second terminal sent in the feed direction has blocked the first beam. The first flag is changed from an off state to an on state, and the second flag is changed from an on state to an off state.
A terminal number counting device. The first beam output by the first terminal passage detection photoelectric sensor at the first beam width is one end edge on the front side in the feed direction, and the second terminal passage detection photoelectric sensor is the second beam. The first beam output at the first beam width by the distance Li from the one end edge on the rear side in the feed direction of the second beam output at the width and the first terminal passage detection photoelectric sensor. The other end edge on the rear side in the feed direction in the beam of the second beam and the other end edge on the front side in the feed direction in the second beam output by the second terminal passage detection photoelectric sensor at the second beam width. The distance Lo satisfies the relationship of P> Lo and Li> T with respect to the distance T and the distance P.
The terminal number counting device according to claim 3.

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