JP3381210B2 - Iron piece detector - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an iron piece detecting device for detecting a remaining needle such as a broken needle or a waiting needle of a sewing machine that has been mixed in a sewn product such as clothing, or a harmful iron piece that has been mixed in food or other products. .

[0002]

2. Description of the Related Art A sewn product such as clothing, which is an object to be inspected, food, and other products are placed on a belt conveyor that runs through the detection area of an iron piece detection sensor, and the object to be inspected An iron piece detection device for detecting an iron piece (ferromagnetic piece) that has passed through and inspected is, for example,
It is sold as an APA-6000 type needle detector (conveyor type needle detector) from the applicant company and is conventionally known.

[0003]

In the above-mentioned known belt conveyor type iron piece detecting apparatus, the place to put the object to be inspected on the belt conveyor and the place to drop it from the belt conveyor are separated from each other on the upstream side and the downstream side of the belt conveyor. Although two workers are required for the work, the present invention is to obtain a transport type iron piece detection device that can be inspected by one person.

In the above-mentioned known iron piece detecting device, since the respective parts of the device are integrally assembled and adjusted, when the need for repair and adjustment of the device arises, the engineer must go to a distant use site. However, according to the present invention, the user or the carrier easily disassembles the device into individual units and transports only those units that need repair, etc. to the manufacturer / repair center for repair. To obtain an iron piece detection device capable of

In the magnetic sensitive iron piece detection sensor,
When the shape is biased like a needle, the direction of the iron piece with respect to the direction of the magnetic field greatly affects the magnetic field of the iron piece, so there is a property that the iron piece cannot be detected depending on the direction of the iron piece. The known magnetic sensitive iron piece detecting device of (1) has a drawback that the detection leakage occurs depending on the direction of the iron piece, but the present invention is to obtain a magnetic sensitive iron piece detecting device with less such detection leakage.

[0006]

Iron piece detection sensors Means for Solving the Problems] In iron detection device comprising a conveying device having a truck for round trip inspection subject through detection zone of the iron piece detection sensor, and the iron piece detection sensor and the transport device Are independently mounted on a stable substrate (or a base), and the transfer device is mounted on the substrate, and the driving unit and the supporting unit are mounted horizontally on the driving unit and the supporting unit. Iron detection device consisting of a transport unit. An iron piece detection sensor, a truck that moves back and forth through the detection area of the iron piece detection sensor, an object mounting plate provided on the truck so that it can rotate in a substantially horizontal plane, and a detection area that passes through the iron piece detection sensor magnetic sensitive iron piece detection device and means for rotating the object to be inspected the placing plate at any angle after. In an iron piece detection device comprising an iron piece detection sensor and a carrier device having a truck that reciprocates an object to be inspected through a detection area of the iron piece detection sensor,
The iron piece detection sensor and the carrier device are independently installed on a stable substrate (or a base), and the carrier device is mounted on the substrate, and a drive unit and a support unit are provided.
An inspecting object placing plate which is composed of a transport unit which is positioned and transversely positioned by a positioning pin or the like on the drive unit and the supporting unit, and which is provided on the truck so that it can be rotated at an arbitrary angle in a substantially horizontal plane. An iron piece detection device comprising: an iron piece detection sensor; and means for rotating the inspection object placement plate at an arbitrary angle after passing through the detection area of the iron piece detection sensor.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front explanatory view showing an embodiment of an iron piece detecting apparatus according to the present invention, FIG. 2 is a plan explanatory view of the same, and FIG. 3 is a right side explanatory view thereof. In FIGS. 1 to 3, reference numeral 1 is a device for conveying an object to be inspected, and 2 is an iron piece detection sensor. Carrier 1
Is positioned and mounted on the drive unit 3 and the support unit 4 and the drive unit 3 and the support unit 4 by a positioning pin or the like (may be simply mounted, but in some cases, one or more screws, clamps, etc. It may be fixed by the above). A motor M and a driving gear 6 driven by the motor M are attached to the drive unit 3. The transport unit 5 is
Front and rear side frames 17, 18 having a groove-shaped cross section and front and rear side frames 17, 1
A frame composed of connecting plates 19 and 20 connecting 8
A dolly 7 for transporting an object to be inspected, which runs on a pair of rails provided on the front and rear side frames 17, 18, and a drive pulley shaft 8 and a driven pulley rotatably attached to left and right end portions of the frame, respectively. Shaft 9, drive pulley shaft 8 and driven pulley shaft 9
Drive pulleys 10 and 10 and driven pulleys 11 and 11 attached to both ends of the drive pulley 10, and a pair of drive belts 12 stretched between the drive pulley 10 and the driven pulley 11 and extending along the front and rear side frames thereof. 12 and a driven gear 13 which is non-rotatably attached to the drive pulley shaft 8 and meshes with the driving gear 6 of the drive unit. The driving gear 6 of the drive unit and the driven gear 13 of the transport device are in mesh with each other when the transport unit is placed on the drive unit. At both ends of each drive belt 12, 12, 14
The dolly 7 is reciprocated by the forward and reverse rotations of the drive pulleys 8, 8. Iron detection sensor 2
Is a magnet unit 15 containing a magnet that produces a magnetic field for detection.
And a detection section 16 having a built-in detection coil for detecting a magnetic change that occurs when the iron piece to be detected passes, and is installed on the base 21 independently of the transport device 1.

When the dolly 7 is stopped at the loading / unloading position of the object to be inspected shown in FIG. 1, when the object to be inspected is placed on the dolly 7 and the start button is pushed, the trolley moves forward due to the action of the drive belt. Then, after passing through the detection area of the iron piece detection sensor to reach the left end of the transport device, the vehicle reversely travels by the action of the reversing switch provided on the machine frame, and again passes through the detection area of the iron piece detection apparatus to be inspected. Since it returns to the loading / unloading position and stops, the inspection object that has been inspected is removed from the truck, the next inspection object is placed, and the start button is pressed again, and the inspection of the next inspection object is started. It should be noted that the start and stop of the truck at the loading / unloading position of the object to be inspected can be performed by using an appropriate sensor such as a photoelectric sensor for detecting the loading / unloading of the object to be inspected, or by the program control of the motor M to make the device workable. Can be significantly improved.

FIG. 4 is a top view of an embodiment of a truck 25 having a rotary mounting plate for rotating an object to be inspected, and FIG. 5 is a vertical sectional view taken along line VV of FIG. In FIGS. 4 and 5, 34 is a box-shaped carriage, 35 is a circular rotary mounting plate rotatably attached to the upper surface of the box-shaped carriage 34, and 36 is fixed to the lower surface of the rotary mounting plate 35. The attached gears, 37 are the operating rods mounted on the upper surface of the box-shaped cart so as to be slidable in the traveling direction, and 38 is the operating rods 37.
A rack fixed to the gear 36 and engaged with the gear 36, 39 and 40 are guide members for the operating rod 37, 41 is a wheel that rolls on a pair of rails provided on the machine frame of the transport unit 5, and 42 is a guide roll.

When the truck 25 is stopped at the position shown in FIG. 1, an object to be inspected is placed on the rotary mounting plate 35, and the start button is pushed, and the truck moves forward by the action of the drive belt. It passes through the detection area of the iron detection sensor and reaches the left end of the conveyor. At this time, the trolley rod 37
When the leading end of the contact rod comes into contact with the contact portion provided on the frame of the transport unit 5, the operation rod 37 is prevented from moving forward, and the operation rod 37 is blocked.
Since it retreats to the position indicated by the chain line, the rotary mounting plate 35 is rotated 90 degrees in the direction of the arrow via the rack 38 and the gear 33. Then, the truck moves backward by the action of the reversing switch provided on the frame, passes through the detection area of the iron piece detection device again, and returns to the original position shown in FIG. 1 and stops.
At this time, the operating rod 37 in the retracted position shown by the chain line in FIG.
When the rear end projecting portion comes into contact with the frame of the transport unit or the abutting portion provided on the frame, the operating rod 37 is prevented from retreating, so that it retreats to the original position shown by the solid line in FIG. The rotary mounting plate 35 is rotated 90 degrees in the direction opposite to the direction shown by the arrow in FIG. 4 via the rack 38 and the gear 36 to return to the original position. Here, the inspected object that has been inspected is lowered from the rotary mounting plate, the next object to be inspected is placed, and the above-described inspection is started again.

FIG. 6 is a top view of a dolly similar to FIG. 4 having a turning device different from the turning device of the turning plate shown in FIG.
FIG. 7 is a vertical sectional view taken along line VII-VII of FIG. In FIG. 6 and FIG. 7, 43 is an actuation rod arranged in a direction substantially orthogonal to the traveling direction of the truck. A pair of guide rollers 44 and 45 are provided on the lower surface of the operating rod 43 at intervals in the longitudinal direction.
Is attached to each of the guide rollers 44 and 45, and
Extending in the direction orthogonal to the direction of travel of the truck,
It is fitted in each of the guide grooves 46, 47 formed on the upper surface of the box-shaped carriage 34. The other end of the connecting piece 48 pivotally mounted on the lower surface of the rotary mounting plate 35 is pivotally mounted by a pin 50 on the lower surface of the inner end of the actuation rod located on the rotary center side of the rotary mounting plate 35. There is.

When the truck 25 starts at the right end of the transporting device, which is the loading / unloading position of the object to be inspected, passes through the detection area and approaches the left end of the transporting device, the stop bar 51 provided on the frame of the transporting unit causes the stop bar 51 to move. The outer end 52 collides, and the operating rod 4
Since 3 is prevented from advancing, the actuating rod 43 moves to the retracted position shown by the chain line in FIG. 6 with respect to the truck. In response to this movement, the connecting piece 48 pivotally attached to the inner end of the actuating rod is shown in FIG.
In order to move to the position indicated by the chain line, the rotation mounting plate 35 is pulled by the connecting piece 48 and rotated 90 degrees in the direction of the arrow.
Then, the truck moves backward by the action of the reversing switch provided on the frame of the transport unit, passes through the detection area of the iron piece detection device again, and approaches the starting position at the right end of the transport device. 6, the outer end portion 52 of the actuating rod 43 collides with a stop piece provided on the frame of the conveying device, and the actuating rod 43 is moved to the original position shown by the solid line in FIG. It is rotated 90 degrees in the direction opposite to the direction indicated by the arrow 6 to return to the original rotation position. In the above-mentioned embodiment, the object to be inspected is rotated by 90 degrees when the truck is reciprocated. Therefore, in the case of a needle or the like, the one that was in the most difficult direction to detect when the truck was going forward was detected the most during the retreat. It will be easier.

[0013]

According to the present invention, it is possible to obtain a carrier type iron piece detection apparatus which can be inspected by one person. In the conventionally known belt conveyor type iron piece detection device, since each part of the device is integrally assembled and adjusted, when a need for repair and adjustment of the device arises, an engineer has to go to a distant use site. According to the present invention, the user or the carrier can easily disassemble the device into units, and only the units that need repair, etc., are shipped to the manufacturer / repair center, etc. for repair or the like. It is possible to obtain a possible iron piece detection device. In a magnetically sensitive iron piece detection sensor, when the shape is uneven like a needle, the effect of the iron piece on the magnetic field changes greatly depending on the direction of the iron piece relative to the direction of the magnetic field. Since there is a property that detection is not possible, the conventional belt conveyor type iron piece detection device has a drawback that detection leakage may occur depending on the direction of the iron piece, but according to the present invention, an iron piece detection area is set as an object to be inspected. Is passed twice, and at the time of the second passage, the object to be inspected is rotated by an arbitrary angle for inspection, so even in the case of a needle whose detection changes greatly depending on the direction with respect to the direction of the magnetic field, It is possible to reduce detection omissions.

[Brief description of drawings]

FIG. 1 is a front explanatory view showing an embodiment of an iron piece detection device according to the present invention.

FIG. 2 is an explanatory plan view of the iron piece detection device shown in FIG.

FIG. 3 is a right side explanatory view of the iron piece detection device shown in FIG. 1.

FIG. 4 is a top view of an embodiment of a truck having a rotary mounting plate that rotates an inspection object.

5 is a vertical cross-sectional view taken along line VV of FIG.

6 is a top view of a dolly similar to FIG. 4 having a rotating device different from the rotating device of the rotating mounting plate shown in FIG. 4;

FIG. 7 is a vertical sectional view taken along the line VII-VII in FIG.

[Explanation of symbols]

1 Conveyance device for inspected object 2 Iron piece detection sensor 3 Drive unit 4 Support unit 5 Conveyance unit 6 Driving gear 10 Drive pulley 12 Drive belt 13 Driven gear 15 Magnet part 16 Detection part 34 Box dolly 35 Rotating mounting plate

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G01V 3/11 B65G 43/00 B65G 43/08

Claims (3)

(57) [Claims] 1. An iron piece detection device comprising an iron piece detection sensor and a transportation device having a dolly for reciprocating an object to be inspected through a detection area of the iron piece detection sensor, wherein the iron piece detection sensor 2 and the transportation device 1 are mutually connected. A drive unit 3 and a support unit 4 which are independently installed on a stable substrate (or base) 21 and on which a transfer device is placed on the substrate, and positioning pins and the like on the drive unit and the support unit. An iron piece detection device comprising a transport unit 5 which is positioned and laterally suspended by. 2. An iron piece detection sensor 2, a transport device having a truck 25 for reciprocating an object to be inspected through a detection area of the iron piece detection sensor, and a transportation device provided on the truck so that it can be rotated at an arbitrary angle in a substantially horizontal plane. A magnetic sensing type iron piece detection device comprising an inspection object placement plate 35 and means for rotating the inspection object placement plate at an arbitrary angle after passing through the detection area of the iron piece detection sensor. 3. An iron piece detection device comprising an iron piece detection sensor and a transportation device having a truck that reciprocates an inspection object through a detection area of the iron piece detection sensor, wherein the iron piece detection sensor and the transportation device are independent of each other. Mounted on a stable substrate (or base), and the carrier is mounted on the substrate by a driving unit and a supporting unit, and the driving unit and the supporting unit are laterally positioned by positioning pins or the like on the driving unit and the supporting unit. And a test object mounting plate 35 provided on the truck 25 so that it can be rotated at an arbitrary angle in a substantially horizontal plane, and a test object mounting plate after passing through the detection area of the iron detection sensor. And an iron piece detecting device provided with a means for rotating the iron at an arbitrary angle.