JP3167124U - Missing stock detector for seed tape production machine - Google Patents

Abstract

An object of the present invention is to surely correct a defective portion of a seed stock by detecting the absence of seeds (stock lack) at a predetermined position of the tape at the time of producing a seed tape and stopping a sheave tape making machine. A guide roller is provided between a seed supply unit and a thread winding unit, and a reflection type photoelectric sensor is provided at a position facing a surface of the guide roller which comes into contact with the tape. When the reflective photoelectric sensor 82 detects the seed 47 in the tape 21 within a predetermined set time, it is determined that the seed 47 is normal (there is no lack of stock), and the seed 47 in the tape 21 is detected within the predetermined set time. If not, it is determined that there is an abnormality (there is a lack of stock), and the signal is sent to the control circuit 66. When receiving the signal indicating the abnormality, the control circuit 66 stops driving the motors 62 and 43 and stops the operation of the seed tape making machine. [Selection diagram] Fig. 1

Description

  The present invention is a seed tape manufacturing method in which seeds are held on a tape at predetermined intervals, and the seed holding tape is manufactured by winding and sealing and fixing the seed holding tape so that the seeds are not displaced or dropped. In the machine, by detecting whether or not seeds are present on the tape at a predetermined interval before winding the yarn, it is possible to correct the seed tape where there is no seed (the absence of seed) The present invention relates to a detection device.

A seed tape containing seeds at a predetermined interval is manufactured for efficient seeding.
FIG. 5 shows a conventional seed tape production machine.
The structure includes a tape holding unit 2 for supplying the tape 21, a tape folding unit 3 that bends the tape 21 fed out from the tape holding unit 2 so that the cross-section thereof becomes a V-shape, and a tape-folding portion 3 that is bent to a V-shape. The seed supply unit 4 for holding the seeds on the tape by dropping the seeds 47 at predetermined intervals on the bottom of the V-shaped tape that is fed out, and the thread on the tape holding the seeds in the left-right rotation direction. By winding, the seed in the tape is sealed and fixed to prevent the seed from being displaced or dropped, and the seed winding tape 5 is wound around the driving roller to pull the tape from the tape holding section 2. A tape feeding unit 6 for feeding and moving and a winding unit 7 for winding the produced seed tape on a reel are provided.

The seed supply unit 4 includes a seed box 41 for storing and placing seeds, a drum 42 for transporting seeds to a predetermined tape position, and a motor 43 for driving the drum 42. The drum 42 has a hollow cylindrical structure. Holes 44 are formed at equal intervals along the center of the outer peripheral surface, and a roller 45 for shielding the hole 44 at a position close to the tape 21 is installed inside the drum 42. Has been. The drum 42 is connected to a vacuum pump 46 and controlled so that the inside of the drum 42 has a negative pressure.
The tape feeding unit 6 includes a driving roller 61 and a motor 62, and the driving force of the motor 62 is transmitted to the driving roller 61 by gears 63 and 64 constituting gear transmission means.

The thread winding unit 5 is configured by arranging thread holders 50 and 51 in series with respect to the tape traveling direction, and the driving force of the motor 62 of the tape feeding unit 6 is applied to the gears 63, 64 and 65 in the thread holders 50 and 51. Is transmitted from the gear 52 to the pulley 58 via the pulley 54 and the belt 56 and also transmitted to the pulley 59 via the gear 53, the pulley 55 and the belt 57. The thread holder 50 is integral with the pulley 59, and rotates in one direction, for example, clockwise by transmission of the driving force of the motor 62. Since the rotation of the thread holder 51 is via the gear 52, the thread holder 51 is reversely rotated with respect to the thread holder 50. The yarn wound around the yarn holders 50 and 51 is wound around the tape 21 in a spiral shape in the left-right rotation direction.
The winding unit 7 includes a reel holder 71 and a motor 72. The driving force of the motor 72 is transmitted to the reel holder 71 via a belt 74, and the produced seed tape is wound around the reel 73. The motor 43 of the seed supply unit 4 and the motor 62 of the tape feeding unit 6 are controlled by a control circuit 68, and the rotation speed of each motor can be adjusted by the control circuit 68.

Next, the operation and action of the conventional example of the seed tape production machine will be described.
When the motor 62 is driven, the tape feeding unit 6 rotates and the tape 21 is pulled, so that the tape 21 wound around the tape holding unit 2 is fed out. The tip of the tape 21 installed immediately before the seed supply unit 4 is bent into a V shape by the V-shaped tape folding unit 3 and sent to the seed supply unit 4. On the other hand, the drum 42 rotates and the seed 47 in the seed box 41 is adsorbed from the next to the hole 44 of the drum 42 that is opened at a predetermined interval because the inside of the drum 42 becomes negative pressure. It is carried to the tape dropping position by the outer peripheral surface of 42. When the seed is carried to a position close to the tape 21, that is, the lowest point of the drum 42, the roller 45 shields the hole 44, so that the seed 47 adsorbed in the hole 44 falls and bends in a V shape. The tape 21 is accommodated at predetermined intervals.
Thus, the tape 21 containing the seeds is pulled by the driving roller 61 of the tape feeding portion 6 through the central through hole of the thread holders 50 and 51. In the thread holder 50, the thread is wound in a clockwise manner by rotating clockwise, and in the thread holder 51, the thread is wound in a spiral manner by rotating counterclockwise, and the seed 47 is enclosed and fixed in the tape 21. As a result, the seed tape is completed and the seed tape in which the seed 47 is enclosed and fixed is wound around the reel 73 mounted on the winding portion 7 via the drive roller 61.

Japanese Utility Model Publication No. 48-24568 Japanese Utility Model Publication No. 5-47547 Japanese Utility Model Publication No. 45-8659

By the way, in the conventional seed tape production machine, the seed 47 may fall off from the tape 21 before the completion of bobbin winding due to poor adjustment of the seed tape production machine before processing the seed tape. If an operator finds it during processing, it can be adjusted by putting seeds in that part, but if it cannot be found, a defective part not containing seeds is wound on the reel 73, and the defective part is There was a risk of shipping without correction.
In addition, the apparatus and member for manufacturing a seed tape are disclosed by patent documents 2 and 3. Patent Documents 2 and 3 show configuration examples similar to the seed supply unit and the bobbin winding unit in the above-described conventional example, respectively. Patent document 1 is a seed string manufacturing device for seeding, which is an apparatus for manufacturing seed strings by transporting seeds of various shapes with a belt and dropping seeds on a V-shaped running tape. It is not an advocacy for the occurrence of this problem.

  The purpose of the present invention was made by paying attention to the problems of the above-mentioned conventional example, and by detecting the missing stock during processing and stopping the seed tape production machine, it is possible to reliably correct the defective location of the missing stock. An object of the present invention is to provide a missing stock detection device for a seed tape production machine that can be implemented.

In order to achieve the above object, according to the present invention, in the seed tape production machine according to claim 1, the missing stock detection apparatus comprises a seed supply unit that holds the seeds on the moving tape at predetermined intervals, and holds the seeds. A seed tape detection machine for detecting a seed tape by producing a seed tape by spirally winding a thread around a thread winding section, wherein the stock loss detection apparatus detects a seed between the seed supply section and the thread winding section. A seed detection unit that is arranged close to the held tape and detects whether or not seeds are present at predetermined intervals on the moving tape, and the seed detection unit detects that seeds are not present at predetermined intervals on the tape. And a control circuit for stopping the seed tape production machine.
According to a second aspect of the present invention, in the apparatus for detecting a vacancy of a seed tape production machine according to claim 2, the seed detection unit is configured to irradiate the tape with a light emitting unit that emits light to the tape, and the light emitting unit emits light. It is a reflection type photoelectric sensor comprising a light receiving unit that receives light reflected from a tape at a position, and the amount of light received by the light receiving unit and reflected by the light emitting unit is reflected on the tape at predetermined intervals, and the seed is on the tape. The control circuit stops the seed tape making machine when it is detected that it has become larger than a certain time.
According to a third aspect of the present invention, in the device for detecting a stock loss of a seed tape production machine according to claim 1, the seed detection unit includes a light emitting unit for irradiating the tape with light, and the tape sandwiched between the light emitting unit and the tape. A transmissive photoelectric sensor comprising a light receiving portion that receives light at a position facing the light emitting portion, and the amount of light received by the light receiving portion through the light emitted from the light emitting portion is transmitted to the tape at predetermined intervals. The control circuit stops the seed tape making machine when it is detected that it has become larger than a certain time.
According to a fourth aspect of the present invention, in the seed tape production machine according to the fourth aspect of the present invention, the cross section of the tape fed to the seed supply unit is V-shaped or U-shaped. The reflection type photoelectric sensor or the transmission type photoelectric sensor disposed between the seed supply unit and the bobbin winding unit is configured such that the seed is dropped at a predetermined interval on the V-shaped bottom or U-shaped bottom and sent to the bobbin winding unit. The sensor is characterized by irradiating light from the side of a V-shaped or U-shaped tape.

  According to the above configuration, in the seed tape production machine, a missing stock is detected during production and the seed tape production machine is stopped, so that the defective part of the missing stock can be reliably corrected.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic for demonstrating 1st Embodiment of the missing stock detection apparatus of the seed tape production machine by this invention, (a) is a block diagram of the seed tape production machine which showed the bobbin winding part in cross section, (b) These are the figures which show the detail of the seed detection part which concerns on this invention. It is the schematic for demonstrating 2nd Embodiment of the missing stock detection apparatus of the seed tape production machine by this invention, (a) is a block diagram of the seed tape production machine which showed the bobbin winding part in cross section, (b) These are the figures which show the detail of the seed detection part which concerns on this invention. It is a figure for demonstrating operation | movement of the stock removal detection apparatus of 1st Embodiment in this invention. It is a figure for demonstrating operation | movement of the stock removal detection apparatus of 2nd Embodiment in this invention. It is the schematic for demonstrating the structure and operation | movement of the seed tape production machine of a prior art example, (a) is a block diagram of a seed tape production machine, (b) is a front view of a seed supply part, (c) is a seed supply part. (D) is a figure which shows the detail of a tape folding part, (e) is sectional drawing which shows the state which bent the tape in the V shape.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
A first embodiment of the present invention is shown in FIG.
In the figure, members using the same reference numerals as those used in FIG. 5 perform the same functions as those of the conventional example, and thus the description thereof is omitted.
A guide roller 81 is installed between the seed supply unit 4 and the bobbin winding unit 5, and a reflective photoelectric sensor 82 as a seed detection unit is installed at a position facing the surface of the guide roller 81 that contacts the tape 21.
In the seed supply unit 4, the drum 42 is rotated at a predetermined speed, and the seed 47 is dropped on the V-shaped tape 21 fed at the predetermined speed. In other words, the seed is sent to the detection position of the reflective photoelectric sensor 82 at a predetermined set time. Therefore, when the reflective photoelectric sensor 82 detects the seed 47 in the tape 21 within a predetermined set time, it is determined to be normal (no missing stock), and the seed 47 in the tape 21 is removed within the predetermined set time. If it is not detected, it is determined that there is an abnormality (the stock is missing), and the signal is sent to the control circuit 66. When receiving a signal indicating abnormality, the control circuit 66 stops driving the motors 62 and 43 and stops the operation of the seed tape making machine.

FIG. 3 is a diagram for explaining the operation of the first embodiment of the present invention.
FIG. 3A shows a case where there is no seed at a predetermined position on the tape, and FIG. 3B shows a case where a seed exists at a predetermined position on the tape.
Light 85 emitted from the light emitting portion 821 of the reflective photoelectric sensor 82 enters the portion where the tape 21 is in contact with the guide roller 81, and the reflected light 86 enters the light receiving portion 822. When the seed 47 is not present at the site, the surface of the tape 21 is flat. For this reason, the amount of received light incident on the light receiving unit 822 is relatively larger than the amount of light emitted by the light emitting unit 821 of the reflective photoelectric sensor 82.
On the other hand, since the surface of the tape 21 is convex when the seed 47 is present, the amount of light received with respect to the light emission amount of the reflective photoelectric sensor 82 is the convex shape of the surface of the tape 21 so that light diffuses as 851. The amount of reflected light 861 incident on the portion 822 is small.
The presence or absence of the seed 47 can be detected by detecting this change in the amount of received light at preset time intervals.

A second embodiment of the present invention is shown in FIG.
In the drawing, the members using the same reference numerals as those used in FIG. 5 are not described here as in the description of FIG.
A transmission type photoelectric device that is a seed detection unit in which a light emitting unit 91 is installed on one side and a light receiving unit 92 is installed on the opposite side so that the tape 21 is sandwiched between the seed supply unit 4 and the bobbin winding unit 5. A sensor 93 is used.
In the seed supply unit 4, the drum 42 is rotated at a predetermined speed, and the seed 47 is dropped on the V-shaped tape 21 fed at the predetermined speed. This means that the seed is sent to the detection position of the photoelectric sensor 93 at a predetermined set time. Accordingly, when the transmission photoelectric sensor 93 detects the seed 47 in the tape 21 within a predetermined set time, it is determined to be normal (no missing stock), and the seed 47 in the tape 21 is removed within the predetermined set time. If it is not detected, it is determined that there is an abnormality (the stock is missing), and the signal is sent to the control circuit 67. When receiving a signal indicating abnormality, the control circuit 67 stops driving the motors 62 and 43 and stops the operation of the seed tape manufacturing machine.

FIG. 4 is a diagram for explaining the operation of the second embodiment of the present invention.
FIG. 4A shows a case where no seed is present at a predetermined position of the tape, and FIG. 4B shows a case where a seed is present at a predetermined position of the tape.
Light 94 emitted from the light emitting portion 91 is transmitted through the portion of the tape 21 sandwiched between the transmissive photoelectric sensors 93, and the transmitted light enters the light receiving portion 92. When the seed 47 does not exist in the above portion, the transmitted light 941 incident on the light receiving unit 92 is not obstructed with respect to the light emission amount of the light emitting unit 91, so that the amount of received light is relatively large.
On the other hand, when the seed 47 is present, the transmission light 942 is impeded with respect to the amount of light emitted from the light emitting portion 91 and reflected as 943. Therefore, the transmitted light 942 incident on the light receiving portion 92 is smaller than that when there is no seed. Amount.
The presence or absence of the seed 47 can be detected by detecting this change in the amount of received light at preset time intervals.

In the above embodiment, a reflection type photoelectric sensor and a transmission type photoelectric sensor are installed as a missing stock detection device, and the presence / absence of seeds is detected based on the amount of reflected light and the amount of transmitted light. The presence / absence of tape seeds can also be detected by this detection method. For example, the presence or absence of seeds can be detected by bringing a contact rod or a contact plate for detection into contact with the surface of the tape, and detecting the presence or absence of the seed based on the inclination or the amount of movement of the contact rod or contact plate. In addition, a device in which an electrical signal changes depending on the presence or absence of seeds at a position where the presence or absence of seeds is detected (for example, a capacitive proximity switch is provided at a tape passing position and the presence or absence of seeds is detected based on a change in capacitance. And the presence or absence of seeds can also be determined from changes in electrical signals.
Although an example in which the shape of the tape to be folded for accommodating seeds is V-shaped has been shown, the seeds can also be accommodated by being folded into a U-shape.

  A seed tape production machine for producing seed tape for efficient seed sowing in the agricultural field.

DESCRIPTION OF SYMBOLS 1,11,12 Seed tape production machine 2 Tape holding part 3 Tape folding part 4 Seed supply part 5 Thread winding part 6 Tape feeding part 7 Winding part 8,9 Missing stock detection part 21 Tape 41 Seed box 42 Drum 43 Motor 44 Hole 45 Roller 46 Vacuum pump 47 Seed 50, 51 Thread holder 61 Drive roller 62 Motor 66, 67, 68 Control circuit 71 Reel holder 72 Motor 73 Reel 81 Guide roller 82 Reflection type photoelectric sensor 93 Transmission type photoelectric sensor

Claims (4)

In the seed supply unit, a seed tape production machine is configured to detect seed loss by holding a seed on a moving tape at a predetermined interval and winding a thread around the tape holding the seed in a spiral shape by a thread winding unit. Because
The stock loss detector is
A seed detection unit that is disposed in proximity to a tape that holds seeds between the seed supply unit and the bobbin winding unit, and detects whether or not seeds are present at predetermined intervals on the moving tape;
When the seed detection unit detects that there are no seeds at a predetermined interval on the tape, a control circuit for stopping the seed tape production machine,
A missing stock detection device for a seed tape production machine characterized by comprising: The seed detection unit
A reflective photoelectric sensor comprising a light emitting unit that emits light to the tape, and a light receiving unit that receives light reflected from the tape at a position irradiated by the light emitting unit;
When the control circuit detects that the amount of light irradiated and reflected by the light emitting unit on the tape at predetermined intervals and received by the light receiving unit is larger than when the tape has seeds, the control circuit detects the seed tape making machine. 2. The missing stock detection device for a seed tape production machine according to claim 1, wherein: The seed detection unit
A transmissive photoelectric sensor comprising a light emitting unit that emits light to the tape and a light receiving unit that receives light at a position facing the light emitting unit across the tape;
When the control circuit detects that the amount of light irradiated and transmitted through the light emitting unit to the tape at a predetermined interval and received by the light receiving unit is larger than when the tape has seeds, the control circuit is configured to produce the seed tape manufacturing machine. 2. The missing stock detection device for a seed tape production machine according to claim 1, wherein:   The tape sent to the seed supply unit is bent so that the cross-section thereof is V-shaped or U-shaped, and the seed is dropped at a predetermined interval on the V-shaped bottom or U-shaped bottom to be sent to the bobbin, and the seed 4. The reflection type photoelectric sensor or the transmission type photoelectric sensor disposed between a supply unit and the bobbin winding unit irradiates light from a side surface of a V-shaped or U-shaped tape. Stock removal machine for seed tape production machine.

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