JPH01247316A - End position detector for material - Google Patents

Abstract

PURPOSE:To enable highly accurate detection of the end position of material through a simple detector and a detecting system by operating the end position of material with respect to a reference line based on the distance to a dog positioned on a detection line detected through a distance meter. CONSTITUTION:When a dough 13 is carried through a carry-in conveyor 11 into a pan 23 in a turning body 21 of a detector 14, the detector 14 detects the amount and direction of the shift E of the central position of the dough 13 from a reference line. Then a controller 17 correct the motion of the dough 13 during return process through a pan moving device 15. Thereafter, the dough 13 is passed to the empty pan 33 subjected to motion correction, and the pan 33 is aligned to a reference line a through a fixed guide 51 during advance process through the pan moving device 15. Since the central position of the dough 13 is aligned to that of the pan 33, it is also aligned to the reference line K thus completing positional correction. Thereafter, the dough 13 is transferred onto a conveyor 12 at a discharge position.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for detecting the edge position of an object such as dough bread.

[Prior Art] For example, in a bread making machine, dough bread is folded into an M shape and put into a baking mold. It is necessary to correct it so that it matches the center position M (reference line). At this time, in order to recognize the deviation of the center position of the dough bread with respect to the reference line, it is necessary to detect the end position of the dough bread with respect to the reference line.

Conventionally, there is a device as described in Japanese Patent Publication No. 55-48539 as a device for detecting the end position of the dough bread. This conventional edge position detection device includes detectors at a plurality of specific positions on a detection line that intersects the reference line at right angles, and detects the dough relative to the reference line based on the detection signal of each detector corresponding to the dough pan. The purpose is to detect the position of the end of the bread.

[Problems to be Solved by the Invention] However, the conventional end position detection device described above has the following problems.

■A large number of detectors are required.

■It is necessary to process the detection signal of each detector.

Detection system is complicated.

■The spacing between adjacent detectors along the detection line is limited by the size of the detection base, making it difficult to improve the precision, and there is a limit to the improvement of detection accuracy.

An object of the present invention is to detect the end position of an object with respect to a reference line with high precision using a single detector and a simple detection system.

[Means for Solving the Problems] An object end position detection device according to the present invention includes a distance meter installed at a specific position on a detection line intersecting a reference line along which the object moves, and a support shaft extending along the support shaft; a dog that is arranged in parallel at a plurality of positions in the axial direction of the support shaft and is driven by the object when the object passes; and a dog that is located on the detection line under the driving state of the dog. and a calculation device that calculates the end position of the object with respect to the reference line based on the detection result of the distance meter.

[Operation] According to the present invention, the dog is driven by the object when the object passes. Thereby, the distance meter detects the distance to the dog located on the detection line under the driving state of the dog, and the calculation device calculates the end position of the object with respect to the reference line based on the detection result of the distance meter. .

Therefore, according to the present invention, it is possible to detect the position of at least one end of an object using a rangefinder as a single detector (if the length of the object is known, a single rangefinder can be used to detect both ends of the object); ), ■The detection system is simple because it only processes the detection signal of the single distance meter mentioned above, and ■It is easy to install thin dogs in parallel, so the dog spacing can be reduced. It is possible to improve the detection accuracy by making it more detailed.

[Example] Figure 1 is a plan view schematically showing an example of the present invention, and Figure 2 is a plan view schematically showing an example of the present invention.
3 is a side view schematically showing an example of the present invention, FIG. 3 is a front view schematically showing an example of a detection device, and FIG. 4 is a side view of FIG. 3.

The pan position correction device 10, as shown in FIGS. 1 and 2,
It is arranged between the carry-in conveyor 11 and the carry-out conveyor 12,
The center position of the dough pan 13 is set at the reference line K.

The pan position correction device IO includes a detection device 14, a saucer moving device 15, a movable guide device 16, a control device 17, and a fixed guide device 18.

The detection device 14 is a rotating body 2 facing the loading conveyor 11.
1, the rotating body 21 can be rotated by a motor 22, and four saucers 23 are provided at 80 degree intervals on the outer circumference of the rotating body 21. The above 8 of the rotating body 21
The 0 degree interval positions are sequentially clockwise with respect to the position relative to the carry-in conveyor 11 as the first device I, the second position ■,
The third position is m, and the fourth position is ■.

The detection device 14 detects a first position and a second position inside the rotating body 21.
Between position II, a distance meter 24, a support shaft 25, and a plurality of dogs 26 as shown in FIGS. 3 and 4 are arranged independently of the revolving body 21. The distance meter 24 detects two specific positions (distance L from the reference line K) on both sides of the reference line on the detection line R that intersects the reference line K at right angles.
For example, a reflection type beam switch 4 is installed at the center and outputs an analog voltage according to the distance # (C, D described later). The support shaft 25 extends along the detection line H. The dogs 26 are arranged in parallel at a plurality of positions in the axial direction of the support shaft 25 in each of the two opposing detection areas on both sides of the reference line, and are arranged so as to be kicked down by the dough pan 13 when the dough pan 13 passes therethrough. Driven. In the dog 26 in FIG. 4, the solid line indicates the normal position, and the two-dot chain line indicates the knocked-down position.

The detection device 14 detects the end position (A , B). That is, the calculation device 27 calculates the installation distance of each rangefinder 24 with respect to the reference line K, and calculates the installation distance of each rangefinder 24 with respect to the reference line K.
The outermost dog 2 kicked down in the dough pan 13 from 4
Based on detection pressure @C, D up to 6, A= L-C, B=
Calculate LD. The detection device 14 further uses the calculation device 27 to calculate the deviation E of the center position of the dough bread 13 with respect to the reference line K as E=A−(A+B)/2. Note that the direction of deviation is determined depending on whether E is plus or minus. That is, when E is positive, it is determined that the center position of the bread dough 13 is shifted downward from the reference line in FIG. 1, and on the other hand, when E is negative, it is determined that it is shifted upward.

The tray moving device 15 includes a revolving body 31 that faces the revolving body 21 of the detection device 14 and the carry-out conveyor 12, and is sandwiched between the revolving body 21 and the carry-out conveyor 12. It is possible to rotate. The saucer moving device 15 moves around the outer periphery of the revolving body 31 at 90°.
Four receiving trays 33 are provided at positions spaced apart from each other to receive the dough bread 13 whose deviation has been detected by the above-mentioned detection device 14. The above-mentioned 80 degree interval positions of the rotating body 31 are sequentially clockwise with respect to the position of the detecting device 14 relative to the rotating body 21 as the first device I, the second position M II, the third position, and the fourth position ■. do. Here, the first layer weight is the bread receiving position, and the third position is the bread discharging position.

The tray moving device 15 has elongated holes 34 perpendicularly intersecting the reference line K at each of the four 90-degree interval positions of the revolving body 31, and supports a roller follower 35 provided at the center position of each tray 33. The shaft portion is slidably fitted into the elongated hole 34. Thereby, each tray 33 can move between the bread receiving position and the bread discharging position as the rotating body 31 rotates, and can also move in a direction perpendicular to the reference line K.

The movable guide device 16 has the rotating body 31 inside the rotating body 31.
It is provided with a movable guide 41 independent from the . Movable guide 4
1 is the process in which the tray moving device 15 returns the tray from the bread discharging position to the bread receiving position, specifically, the fourth position ■
and the first device I. The movable guide 41 has a Y-shape that is line symmetrical with respect to a line parallel to the reference line K, and expands greatly at the fourth position ■, gradually narrows, and at the first layer weight, the movable guide 41 forms a Y-shape that is line symmetrical with respect to a line parallel to the reference line K. 33 roller followers 35 are guided in a transferred state. This movable guide 41 is driven by a pulse motor 42 via a feed screw shaft 43 to adjust the position of the receiving tray 33 in a direction perpendicular to the reference line K.

The control device 17 is transferred with the detection results of the detection device 14,
Based on the deviation E and deviation direction of the dough pan 13 calculated by the calculation device 27, the pulse motor 4 of the movable guide device 16
2 to correctively move the empty tray 33 before receiving the bread. That is, the control device 17 uses the pulse motor 42 to set the small spaced portion of the movable guide 41 at the center position of the dough pan 13, and as a result, the center of the empty saucer 33 positioned at the small spaced portion of the movable guide 41. The position is matched with the center position of the dough pan 13, and the bread receiving position is made to stand by.

The fixed guide device 18 has a rotating body 31 inside the rotating body 31.
A fixed guide 51 is provided which is independent from the fixed guide 51. Fixed guide 5
1 is disposed in a fixed state during the process in which the tray 33 moves from the bread receiving position to the bread discharging position by the tray moving device 15, specifically between the first and third positions. The fixed guide 51 has a Y-shape that is symmetrical about the reference line K, and is in the first position! It expanded greatly, and this gradually narrowed until it reached the third
At position M1m, there is a small interval that coincides with the reference line K,
The roller follower 35 of the saucer 33 is guided in a transferred state. Thereby, the fixed guide 51 aligns the center position of the saucer 33 with the reference line K.

゛The above panning position correction device 10 operates as follows.

(2) The dough bread 13 is carried by the carry-in conveyor 11 into the receiving tray 23 of the revolving body 21 that constitutes the detection device 14. Thereby, the detection device 14 detects the deviation E and the deviation direction of the center position of the dough bread 13 from the reference line as described above.

■The above-mentioned dough bread 13 whose deviation was detected by the detection device 14
The empty saucer 33 of the saucer moving device 15, which corresponds to receiving the empty tray 33, is previously corrected and moved by the control device 17 during the return process by the saucer moving device 15 (between the fourth position ■ and the first position ■). . That is, the control device 17 drives and controls the pulse motor 42 of the movable guide device 16 based on the deviation E and the direction of deviation of the dough pan 13 detected by the detection device 14, so that the center position of the empty tray 33 is set in the dough pan 13. The movable guide 41 is driven so as to match the center position.

(2) The dough bread 13 is delivered to the empty tray 33 after the correction movement. The center position of the saucer 33 that has received the dough bread 13 is moved to the reference line K by the fixed guide 51 of the fixed guide device 18 during the advancing process by the saucer moving device 15 (between the first position and the third position). It is made to match. At this time, since the center position of the dough pan 13 has already been aligned with the center position of the saucer 33 in the above step (3), the center position of the dough pan 13 will also match the reference line K, completing the position correction. .

■The dough pan 13 whose position has been corrected is then moved to the discharge position (third
It is transferred to the carry-out conveyor 12 at a positioning machine).

According to embodiment E, the dog 26 is driven by the dough pan 13 when the dough pan 13 passes by. As a result, the distance meter 24 detects the distance to the dog 26 that is driven at the end of the dough pan 13 and is positioned on the detection line R, and the calculation device 27 calculates the detection result of the distance meter 24. The end position of the dough bread 13 with respect to the reference line K is calculated by.

Therefore, according to the above embodiment, (1) one end of the dough pan 13 can be detected by the distance meter 24 as a single detector (if the length of the dough pan 13 is known, the single distance meter 24 (can detect the positions of both ends of the dough pan 13)
, ■ The detection system is simple because it only processes the detection signal of the single distance meter 24, and ■ It is easy to install thin dogs 26 in parallel, so the dog spacing can be made finer to improve detection accuracy. You can improve.

In the above embodiment, the rangefinder 24 is placed at a distance from the reference line K with its light-receiving surface facing the reference line, and the dog 26 that has been kicked down by the dough pan 13 is detected by the rangefinder. Detection was made at 24. However, when using a distance meter such as a reflective beam switch, the distance meter 24A is placed near the reference line with its light-receiving surface facing outward, and the distance meter 24A is placed on the detection line without being kicked down by the dough pan 13. The distance to the positioned dog may be detected (see FIG. 5). In the dog 26 in FIG. 5, the solid line is the normal position, and the two-dot chain line is the knocked down position.

Furthermore, in the above embodiment, the plurality of dogs 26 are connected to one support shaft 2.
5, but separate support shafts are provided corresponding to the two detection areas, so that the support shaft, dog, and detector in each detection area can be moved and adjusted as one in a direction perpendicular to the reference line. You may also do so.

[Effects of the Invention] As described above, according to the present invention, the end position of an object relative to the reference line can be detected with high precision using a single detector and a simple detection system.

[Brief explanation of the drawing]

FIG. 1 is a plan view schematically showing one embodiment of the present invention, and FIG.
3 is a front view schematically showing an example of a detection device, FIG. 4 is a side view of FIG. 3, and FIG. 5 is a side view schematically showing an embodiment of the present invention. It is a side view which shows a modification. 14...Detection device, 24...Distance meter, 25...Spindle, 26...Dog, 27...Arithmetic device. Agent Patent Attorney Osamu Shiokawa

Claims (1)

[Claims] (1) A rangefinder installed at a specific position on a detection line that intersects the reference line along which the object moves, a support shaft extending along the detection line, and a distance meter arranged at multiple positions in the axial direction of the support shaft. The edge of the object with respect to the reference line is determined based on the detection result of the distance meter that detects a dog that is set and is driven by the object when the object passes, and a dog that is located on the detection line under the driving state of the dog. 1. An end position detection device for an object, comprising: an arithmetic device for calculating the position of the end of an object.