JPH101850A - Drawing of dropper and drawing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for drawing a dropper and an apparatus therefor, especially designed to surely draw the dropper on the lowermost tier from a group of droppers. SOLUTION: This dropper-drawing apparatus 90 is designed to draw any dropper C in such a state that many droppers C each consisting of magnetic substance are collocated, and equipped with a magnetic head 91 placed under a guide hole 1 for the dropper C on the lowermost tier and consisting of electromagnet iron core, a drawing pin 94 to be projected through the top face 91a of the magnetic head 91 and inserted into the guide hole 1 at the lowermost tier, and a driving means 92 to be mounted with the magnetic head 91 and move the magnetic head 91 horizontally, and has such a scheme as to draw the dropper C on the lowermost tier first and continue the same operation in order.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dropper pulling method and a pulling out device for pulling out a lowermost dropper from a group of droppers arranged in parallel.

[0002]

2. Description of the Related Art Japanese Patent Publication No. 47-31387 discloses an example of a conventional dropper pull-out device. The dropper pull-out device disclosed in this publication repels the droppers at the ends of a group of droppers held in a suspended state by upper and lower guide rails extending horizontally by magnetic induction of a separating magnet, and then retreats. After the upper end or lower end of the end dropper is magnetically attracted by the attraction electromagnet, the electromagnet is moved in the horizontal direction, so that the endmost dropper is pulled out along the guide rail.

[0003]

However, the above-mentioned dropper pull-out device is configured to pull out the suspended endmost dropper while using only the magnetic attraction of the electromagnet. If these are overlapped with the machine oil etc. attached, the weight of the multiple droppers to be pulled out increases, and furthermore, since these droppers are pulled out while contacting the guide rails, the resistance when pulling out the dropper is reduced. The dropper may be detached from the attraction electromagnet. Further, it is necessary to appropriately balance the mutual magnetic force between the separating magnet and the attracting magnet.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and in particular, a dropper pull-out method and a dropper in which a lowermost dropper is reliably drawn out of a group of droppers stacked vertically. An object of the present invention is to provide a drawer device.

[0005]

A dropper withdrawing method according to the present invention is directed to a dropper withdrawing method in which a plurality of magnetic droppers are juxtaposed, and the droppers are vertically stacked. After inserting the magnetic head draw-out pin into the guide hole of the lowermost dropper and magnetically adsorbing the lower edge of the guide hole on the suction surface of the magnetic head, move the magnetic head horizontally. It is characterized in that it is moved and the lowermost dropper is hooked on the drawer pin and pulled out.

In this drawer method, a drawer pin is inserted into a guide hole of a lowermost dropper in a state in which a plurality of droppers made of a magnetic material are vertically stacked, and then arranged around a magnetic head. By supplying an exciting current to the coil, the periphery of the guide hole of the lowermost dropper is magnetically attracted to the attraction surface of the magnetic head, and the periphery of the guide hole is fixed to the attraction surface of the magnetic head. Thereafter, the magnetic head is moved in the horizontal direction, and the lowermost dropper is smoothly pulled out while the guide pin peripheral edge of the lowermost dropper is hooked on the drawer pin.

In this case, after the drawer of the lowermost stage has been pulled out, the exciting current flowing through the coil arranged around the magnetic head is switched to the AC decaying current for degaussing,
It is preferable that the periphery of the guide hole magnetized by the magnetic head be demagnetized and the periphery of the guide hole be released from the magnetic head.

A dropper pull-out device according to the present invention is a dropper pull-out device for pulling out an arbitrary dropper in a state where a plurality of droppers made of a magnetic material are arranged side by side.
A magnetic head disposed below the guide hole of the lowermost dropper and made of an iron core of an electromagnet, a drawer pin projected from the top surface of the magnetic head and inserted into the lowermost guide hole, and a magnetic head And driving means for moving the magnetic head in the horizontal direction.

In this drawer, a drawer pin is inserted into a guide hole of a lowermost dropper in a state in which a plurality of droppers made of a magnetic material are vertically stacked, and then placed around the magnetic head. By passing an exciting current through the coil, the periphery of the guide hole of the lowermost dropper is magnetically attracted to the top surface of the magnetic head, and the periphery of the guide hole of the dropper is fixed to the magnetic head. Then, by the driving means,
The magnetic head is moved in the horizontal direction, and the lowermost dropper is smoothly pulled out while the guide pin peripheral edge of the lowermost dropper is hooked on the drawer pin.

In this case, the drawer pin is formed to be elongated in the direction corresponding to the guide hole of the dropper, so that the lowermost dropper can be stably pulled out while being hooked on the drawer pin.

Further, since a pair of guide projections are formed on the top surface of the magnetic head at positions sandwiching the drawer pin, the lowermost dropper can be stably pulled out while being hooked on the drawer pin.

Furthermore, the lowermost dropper can be properly pulled out by the magnetic head by vertically stacking the droppers in a substantially horizontal state in the housing.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a dropper pull-out mechanism and a dropper pull-out method according to the present invention will be described below in detail with reference to the drawings. An example of the dropper C, which is the object of the present invention, is integrally formed of a magnetic material SK5 having a spring property, and as shown in FIG. The guide hole 1 is formed in a thin plate-shaped dropper body 2 and is defined by a guide hole peripheral portion 3. However, there are various lengths, shapes, materials, and the like of the dropper C.

FIG. 1 is a perspective view showing a flat-bed type double dropper stocker to which the dropper drawer of the present invention is applied. FIG. 2 is a sectional view taken along the line II-II in FIG. FIG. 3 is a sectional view taken along the line III-III in FIG.

As shown in FIGS. 1 to 3, the dropper stocker 10 has a housing 11 which is vertically stacked while the dropper C is kept horizontal. The housing 11 is formed to be elongated to match the elongated shape of the dropper C, and includes a flat base 12 and a frame main body 13 which is erected on the base 12 and accommodates the droppers C in a stacked state. ing. This frame body 1
3 is a front frame portion 13A for accommodating the front portion of the dropper C.
And a rear frame portion 13B for accommodating the rear side portion of the dropper C, and has a two-part structure.

The frame body 13 has two dropper accommodating slits 15 for stacking the droppers C in the vertical direction.
Each dropper accommodating slit 15 is formed so as to cut in the vertical direction. In the middle region H in the height direction of each dropper housing slit 15, the front wall surface 15a and the rear wall surface 15b of the dropper housing slit 15 are formed as inclined surfaces inclined backward, and the front wall surface 15a and the rear wall surface 15b They are parallel to each other and are inclined at the same angle (for example, 45 °). In the upper region G and the lower region R other than the middle region H, the front wall surface 15a and the rear wall surface 15b extend in the vertical direction. Therefore, when the dropper C is filled in the dropper accommodating slit 15, in the upper region G and the lower region R, the droppers C are stacked in a vertically aligned state, and in the middle region H, the dropper C is displaced rearward and stairs. Stack in a shape.

Further, a rear frame portion 13B of the frame body 13 has a bottom plate 13Ba extending horizontally on the base 12. The upper surface of the bottom plate 13Ba forms a dropper supporting surface (hereinafter, referred to as a "dropper receiving bottom surface") 16 extending in the horizontal direction, and the lower end of the rear dropper receiving slit 15 extends to the dropper receiving bottom surface 16. Also, the front frame 13
No dropper housing bottom 16 is formed in A, the lower end of the front frame portion 13A is directly fixed to the base 12, and the lower end of the front dropper housing slit 15 extends to the base 12. The lower end of the front end of the dropper accommodating slit 15 is opened to form a dropper outlet 18. In addition, the dropper housing slit 1 in the frame body 13
5 is provided with an open dropper replenishing opening 17 at the top end.
7 makes it easy to insert.

The large number of droppers C loaded through the openings 17 are stored in the dropper receiving slits 15, and only the rear side of the lowermost dropper C comes into contact with the dropper receiving bottom surface 16. The dropper housing bottom surface 16 supports all the droppers C in the housing 11 from below, and also supports the rear side of the lowermost dropper C.
Then, it is necessary to bend the front side of the lowermost dropper C supported by the dropper housing bottom surface 16 downward by using a dropper separating mechanism 40 described later. Then, bottom plate 13B
a, the portion of the dropper housing bottom surface 16 that supports the lowermost dropper C in a cantilever manner is reduced.
6, the front part (free part) extending forward from the front end I can be made as long as possible, and by making this part long, the short dropper C (see FIG. 4) having a length of about 8 cm is bent. This makes it possible to flex the lowermost dropper C reliably downward. Also, the stacked droppers C
Is applied to the inclined surface of the rear wall surface 15b, so that the load of the dropper C in the stocker 10 is not applied to the lowermost dropper C at all. As a result, the pulling force of the lowermost dropper C can be reduced.

As a specific means for reliably bending the lowermost dropper C, a predetermined step is provided between the dropper receiving bottom surface 16 of the dropper receiving slit 15 and the upper surface 12a of the base 12. With this configuration, the lowermost dropper C can be appropriately projected from the bottom plate 13Ba, and the front part of the lowermost dropper C is
2, the front part of the lowermost dropper C can be floated with respect to the base 12. Such a step is achieved by the thickness P of the bottom plate 13Ba of the frame body 13, and by increasing or decreasing the thickness P of the bottom plate 13Ba, the floating amount of the dropper C can be adjusted. As described above, by floating the front side of the lowermost dropper C with respect to the base 12, the front end of the lowermost dropper C can be forcibly pulled down by means such as vacuum suction. Can be separated by bending so as to be gradually peeled off from the front end portion.

Here, in order to ensure that the lowermost dropper C bends downward, the projecting length S of the bottom plate 13Ba is determined.
Is set considerably shorter than the entire length of the dropper C. Therefore, the dropper C supported by the bottom plate 13Ba
Becomes unstable, and it is difficult to maintain the horizontal state. Therefore, in order to keep the dropper C horizontal in the dropper receiving slit 15, in the middle area H of the dropper receiving slit 15, the front wall 15a and the rear wall 15b of the dropper receiving slit 15 are
It is inclined backward to form an inclined surface. By bending the dropper housing slit 15 back and forth in this manner, the position of the center of gravity of all the droppers C (dropper group) housed in the housing 11 is adjusted to the EF line (the front end I of the dropper housing bottom surface 16 in FIG. 2). (A line extending up and down through the wire).

That is, in the dropper group in FIG. 2, when the mass on the right side (rear side) of the EF line is sufficiently larger than the mass on the left side (front side) of the EF line,
The position of the center of gravity of the dropper group is located sufficiently behind the EF line. Then, in FIG. 2, the resultant force of the force to slide down the inclined surface of the rear wall surface 15 b by the load of the dropper group on the right side of the GH line and the force by the load of the dropper group on the left side of the GH line. When the action line K intersects the dropper housing bottom 16 on the right side of the point I (the foremost end of the dropper housing bottom 16), each dropper C rotates clockwise around the front end I of the dropper housing bottom 16 as a fulcrum. As a result, the respective droppers C are kept horizontal in the dropper receiving slits 15.

When the number of the droppers C stocked in the dropper receiving slit 15 decreases, the position of the center of gravity of the dropper group continues to move forward, and the line of action K of the resultant force is located on the left side of the point I at the time of dropper receiving. As a result of the intersection with the extension of the bottom surface 16, a counterclockwise moment about the point I as a fulcrum may cause the dropper C to be unable to maintain the horizontal position. However, before such a situation occurs, the dropper C is appropriately replenished from the dropper replenishing opening 17.

As shown in FIGS. 1 and 2, a concave and slit-shaped air passage 20 extending vertically along the inclined surface is provided on all or a part of the inclined rear wall surface 15b. Have been. The upper end of the air passage 20
The lower end of the air passage 20 communicates with an air suction hole 22 that extends through the rear frame 13B in the horizontal direction. The air suction hole 22 is connected to a vacuum source (not shown). By suctioning air from the air suction hole 22 with the vacuum source, negative-pressure air flows from the top to the bottom in the air passage 20. It will flow. in this way,
By flowing the negative pressure air from the upper end to the lower end of the air passage 20, the descent force along the inclined rear wall surface 15b follows the flow of the air while maintaining the close contact of the dropper group in this portion. To dropper C at all times.

It is to be noted that the air passage 20 is formed over the entire width of the rear wall surface 15b without forming the air passage 20 in a slit shape.
May be formed. In this case, as shown in FIG. 3, by making the corner portion Q of the air passage 20 angular,
The round end of the dropper C does not block the air passage 20, and the air flows through the corner Q. In the rear wall surface 15b, the air passage 20 may be provided in the upper region G or the lower region R.

(Dropper Separation Mechanism) Next, FIGS.
As shown in FIG. 4, the dropper stocker 10 includes a dropper separation mechanism 40 for further securely pulling out the lowermost dropper C. The dropper separating mechanism 40 is provided at the front of the housing 11 and sucks the guide hole peripheral edge 3 that forms a part of the flat surface F of the dropper body 2 in the lowermost dropper C from below by vacuum suction. It has a head 41. The suction head 41 is provided on the bottom of the dropper housing bottom (dropper support surface) 16.
Dropper body 2 located at the front of the
So that it faces the front part of the lowermost dropper body 2
It is arranged below.

Further, the suction head 41 moves up and down to forcibly pull the front portion of the lowermost dropper C to the magnetic head 31 and in a state where the suction head 41 looks through a rectangular opening 49 provided in the base 12. It is inserted into this opening 49. The top surface 41a of the suction head 41 is inclined forward, and the inclination angle is the dropper C.
The guide hole peripheral portion 3 of the dropper C is formed so as to be in close contact with the top surface 41a of the suction head 41 when its front end comes into contact with the suction surface 91a of the magnetic head 91 (see FIG. 8). The top surface 41 a of the suction head 41 is provided immediately below the lowermost dropper C behind the magnetic head 91. Further, a vertically extending suction hole 42 is provided in the suction head 41, and two circular suction ports 42 a which are exposed toward the guide hole peripheral portion 3 are formed at the upper end of the suction hole 42. I have.

As shown in FIG. 4, each suction port 42a formed as an opening is provided side by side at a position sandwiching the guide hole 1 and the flat surface F of the dropper body 2.
Of the guide hole, and faces the peripheral portion 3 of the guide hole. Therefore,
After sucking the dropper C on the inclined top surface 41a of the suction head 41, the suction head 41 is lowered,
The dropper C can be appropriately bent in a state where the guide hole 1 is sandwiched between the suction ports 42a from both sides. In addition, by increasing the distance between the forefront end I of the dropper housing bottom surface 16 serving as a fulcrum and the suction port 42a of the suction head 41, the suction force can be reduced by the leverage principle.

Further, as shown in FIGS. 1, 2 and 4,
The dropper separation mechanism 40 has a base 46 for standing and fixing the suction head 41, and the base 46 is arranged below the base 12. A concave portion 47 for seating a spring is formed on an upper surface 46 a of the base portion 46, and the concave portion 4 is formed on the base portion 46.
A pin insertion hole 48 penetrating the base 46 vertically is formed so as to sandwich the base 7 (see FIG. 4). Also, the base 46
The upper surface 46a of the base 12 and the bottom surface 12b of the base 12 are connected via a compression spring 50 seated in the concave portion 47. The compression spring 50 urges the base 12 in the direction of separating the base 46 from the base 12. I have. Therefore, two guide pins 51 are projected downward from the bottom surface 12a of the base 12, each guide pin 51 is inserted into each pin insertion hole 48 of the base 46, and a snap ring or the like is attached to the lower end of the guide pin 51. By providing the stopper portion 51a made of the base member 4 in the extending direction of the guide pin 51 under the elasticity of the compression spring 50,
6 can be moved up and down.

As shown in FIG. 2, a suction hole 53 extending in the horizontal direction is provided in the base 46. One end of the suction hole 53 communicates with the suction hole 42 of the suction head 41, and
The other end of 3 communicates with a suction hole 55 of a flexible suction pipe 54 fixed to the end of the base 46. This suction pipe 54 extends horizontally along the base 12,
It moves up and down following the base 46. The suction pipe 54
Is protruded from the rear end of the base 12 and is connected to the vacuum source S. Therefore, by operating the vacuum source S, it is possible to perform vacuuming at the suction port 42a through the suction holes 42, 53, and 55. As shown in FIG. 4, a pair of upper and lower tongue pieces 52 that are to be engaged with an operation piece 64, which will be described later, protrude from the base 46. The upper tongue piece 52 is pushed up by the distal end of the operating piece 64, and the lower tongue piece 52 has a base portion 46 with a compression spring 50.
When it does not descend smoothly, it is pushed down by the tip of the operating piece 64.

Here, as shown in FIG. 2, the base 46 is moved up and down by the driving means 60. The driving means 60 includes a support base 61 for supporting the base 12 of the housing 11.
, A detent cylinder rod 63 that reciprocates up and down with a predetermined stroke with respect to the air cylinder 62, and an air cylinder 62 fixed to the distal end of the cylinder rod 63 and the distal end of the base 46. An operating piece 64 that engages with the tongue piece 52 is provided. Therefore,
In accordance with the stroke amount of the cylinder rod 63, the base 46
Can be moved up and down by a predetermined amount. The tongue piece 5
When the tip of the operation piece 64 is inserted between the two, the stroke amount of the cylinder rod 63 is not the amount of elevation of the base 46 because the operation piece 64 has play between the tongue pieces 52. However, the suction head 41 is connected to the air cylinder 62
In this case, there is no need to employ the base 46 or the operating piece 64, and it is not necessary to provide play between the tongue pieces 52 and the tip of the operating piece 64.

(Drawer pulling device) Next, a description will be given of a drawer device 90 for pulling out the magnetic droppers C stacked vertically in the stocker 10 one by one from the bottom.

As shown in FIGS. 1, 5 and 6, a dropper pull-out device 90 includes a dropper pull-out magnetic head 91 made of an iron core constituting a part of an electromagnet, and a top surface of the magnetic head 91. A draw-out pin 94 made of a non-magnetic material and protruding from the suction surface 91a, and a rectilinear unit 92 as driving means for moving the magnetic head 91 in the horizontal direction are provided.

As shown in FIGS. 5 and 6, the magnetic head 9
1 is disposed below the guide hole 1 of the lowermost dropper C housed in the housing 11 so as to pull out the lowermost dropper C. Further, the top surface 9 of the magnetic head 91
A draw-out pin 94 made of a non-magnetic material is fixed to 1a so as to protrude. The draw-out pin 94 is inserted into the guide hole 1 and has such a height that it can be hooked on the guide hole peripheral portion 3. ing.

Further, the drawer 90 has a rectilinear unit 92 as a driving means for moving the magnetic head 91 in the horizontal direction. This straight unit 9
2 is laid below the stocker 10 and is fixed on a horizontal mounting table 93 at a position adjacent to a support table 61 for supporting the base 12 of the housing 11. The rectilinear unit 92 is configured as an air cylinder with a guide mechanism, and a piston rod 92a provided on the air cylinder 92 cooperates with a movement amount adjusting stopper (not shown) in the extending direction of the dropper C. Move back and forth by a predetermined amount. In addition, as another example of the rectilinear unit 92,
There are straight moving means using a ball screw and a linear motor.

The lower end of the moving base 110 is fixed to the tip of the piston rod 92a, and the lower end of the magnetic head 91 is fixed to the upper end of the moving base 110. Therefore, the magnetic head 91 can be moved in the horizontal direction by a predetermined amount according to the amount of protrusion of the piston rod 92a.
Further, a drop-off prevention mechanism 112 that engages with the drawer pin 94 and prevents the lowermost dropper C from coming off the drawer pin 94 is disposed on the upper portion 110 a of the movable base 110.

The drop-out prevention mechanism 112 is disposed in front of the lowermost dropper C in the pulling-out direction so as to face the pull-out pin 94, engages with the pull-out pin 94, and guides the guide hole peripheral edge to the pull-out pin 94. A plate-shaped falling-off preventing portion 113 for hooking and holding the portion 3;
0a, and has an air cylinder 114 as a drive source for driving the base 113a of the drop-off prevention unit 113 in the horizontal direction to achieve engagement / disengagement of the drop-out prevention unit 113 with the drawer pin 94. I have. Further, the plate-shaped falling-off preventing portion 113 is formed with a concave portion 113b for inserting the drawer pin 94.

Therefore, by retracting the piston rod 114a of the air cylinder 114 toward the magnetic head 91, the pull-out pin 94 is inserted into the concave portion 113b of the drop-off prevention portion 113, and the top surface 91a of the magnetic head 91 and the drop-off prevention are prevented. The guide hole peripheral portion 3 can be sandwiched between the guide hole and the portion 113. Then, an unexpected situation occurs in the magnetic head 91,
Even when the magnetizing force is lost, the guide hole peripheral edge portion 3 does not come off from the drawer pin 94 during further pulling out of the dropper C. Further, by advancing the piston rod 114a in a direction away from the magnetic head 91, the engagement between the pull-out pin 94 and the falling-off preventing portion 113 is released. Such an operation is performed when the lowermost dropper C is released from the magnetic head 91 when the lowermost dropper C is completely pulled out of the housing 11.

(Operation) Next, a method of pulling out the dropper will be described in relation to the dropper separating mechanism 40.

As shown in FIG. 7, when the air cylinder 62 is driven to raise the operating piece 64, the upper tongue piece 52 is pushed up by the tip of the operating piece 64. Then, the base 46 rises by a predetermined amount. At this time, while the top end of the suction head 41 is projected from the opening 49, the guide hole peripheral portion 3 of the lowermost dropper C is formed.
Very close to or abut. Thereafter, the vacuum source S is operated, and the suction port 42a is evacuated, so that the guide hole peripheral portion 3 of the dropper C is vacuum-sucked to the top surface 41a of the suction head 41. In this case, due to the inclination of the top surface 41a of the suction head 41, this suction head 4
Although a slight gap is initially formed between the top surface 41a of the No. 1 and the dropper C, the influence of the gap at the beginning of the bending of the dropper C can be ignored. This is because the suction force when the dropper C having the spring characteristic starts to bend does not need to be so large.

Thereafter, as shown in FIG. 8, when the air cylinder 62 is driven to lower the operating piece 64, the dropper C follows the top surface 41 a, and the base 46 is moved to a predetermined position by the spring force of the compression spring 50. Descend to the position. After operating the vacuum source S, the top surface 41a of the suction head 41 is made to approach or contact the lowermost dropper C, and thereafter,
The suction head 41 may be lowered.

At this time, the lowermost dropper C is pulled away from the dropper accommodating bottom surface (dropper support surface) 16 in a cantilever support state with the point I as a fulcrum. The dropper C at the bottom is the next dropper C
Is separated from the foremost end, so that even if the droppers C are stuck together with mechanical oil, the lowermost dropper C is separated from the foremost end. Yuki, dropper C with little force
They can be easily separated from each other. Further, the drawer pin 94 is inserted into the lowermost guide hole 1, and thereafter, an exciting current is applied to the coil 100 disposed around the magnetic head 91, and the dropper C is magnetically attracted to the magnetic head 91. At this time, the magnetic attraction force is set to a strength that does not attract the dropper C of the second stage from the bottom.

Thereafter, by retracting the piston rod 114a (see FIG. 5) of the air cylinder 114 toward the magnetic head 91, the pull-out pin 94 is inserted into the concave portion 113b of the falling-off preventing portion 113, and the top of the magnetic head 91 is moved. Face 9
The guide hole peripheral portion 3 is sandwiched between 1a and the falling-off preventing portion 113 so that the guide hole peripheral portion 3 of the lowermost dropper C does not come off from the extraction pin 94. Then, at this point, the vacuum suction of the dropper C by the suction head 41 is stopped. Thereafter, the piston rod 92 of the air cylinder 92
a (see FIG. 5) is projected in the horizontal direction by a predetermined air pressure, and the movable base 110 is advanced in the horizontal direction.
As shown in FIG. 9, the drop prevention unit 1 on the moving base 110
13 and the magnetic head 91 are moved in the horizontal direction. As a result, with the cooperation of the drop-off prevention unit 113 and the magnetic head 91, the drawer pin 94 can be reliably hooked on the tip end portion of the guide hole 1 of the lowermost dropper C, and heads to the dropper delivery mechanism 140 described later. The dropper C can be pulled out horizontally while stabilizing. At this time, as shown in FIG.
The dropper C of the second stage also attempts to be pulled out by the frictional force, but the tip of the dropper C of the second stage from the bottom collides with the wall surface 11a of the housing 11, so that the pullout is prevented.

However, when the rear end of the lowermost dropper C comes off the tip of the dropper housing bottom surface 16, the suction head 4
1, the vacuum suction of the dropper C may be stopped,
When the magnetic attraction force of the magnetic head 91 is large, the drop-off prevention unit 113 may not be provided. In addition, since the vacuum suction force acts only on the lowermost dropper C, only the lowermost dropper C bends due to the vacuum suction, and the dropper C immediately above the lower dropper C keeps horizontal. In FIG. 8, after the lowermost dropper C is separated, if the magnetic attraction force of the magnetic head 91 is likely to reach the second dropper C, the lowermost dropper C is magnetized before the magnetic head 91 is magnetized. A pin or the like of a non-magnetic material may be inserted between the dropper C and the second-stage dropper C. When canceling the magnetic attraction, it is preferable that the exciting current of the coil 100 is switched to the demagnetizing AC decay current to eliminate the residual magnetism generated in the dropper C.

(Dropper Delivery Mechanism) FIGS. 10 and 11
As shown in the figure, a dropper delivery mechanism 140 is disposed in front of the stocker 10 and the dropper delivery mechanism 140
Is the support shaft 1 provided on the rotary actuator 143.
A work rotating member 141 as an inverted block that rotates 90 degrees around 42 is provided. The work rotating member 141 is provided with a flat dropper storage portion 145 for temporarily storing the pulled-out dropper C to invert it. The dropper accommodating portion 145 has a linear dropper insertion hole 144 for receiving the lowermost dropper C pulled out horizontally from the stocker 10 in a horizontal state.
Are formed. Bottom 1 of this dropper storage part 145
A slit 146 for guiding the magnetic head 91 for inserting the magnetic head 91 is formed in the dropper 45a over the entire length of the dropper insertion hole 144. Further, the dropper storage unit 1
45 is an inverted magnetic head 147 for holding a dropper.
The magnetic head 147 is installed at a position where the magnetic force is exerted on the dropper insertion hole 144, and a coil 148 is arranged around the magnetic head 147. Incidentally, two dropper insertion holes 144 are formed in the dropper accommodating portion 145 in response to the two droppers C being pulled out from the stocker 10.

Therefore, as shown in FIG.
The moving base 110 is moved forward in the horizontal direction by the air cylinder 92 while the dropper C is prevented from coming off from the magnetic head 91 by the falling-off prevention unit 113 so as to prevent the dropper C from coming off. At this time, as shown in FIG. 12, the magnetic head 91 is inserted into the slit 146 of the dropper accommodating portion 145.
And the fall prevention unit 113 is
5, the dropper C sandwiched between the top surface 91a of the magnetic head 91 and the drop-off prevention portion 113 is guided along the dropper insertion hole 144.

Then, as shown in FIGS. 11 and 13,
The dropper C is ejected from the dropper accommodating section 145 by a predetermined amount β, and the air cylinder 92 is stopped when the dropper C is disposed immediately below the magnetic head 147. At this time, when the coil 148 of the inverted magnetic head 147 is energized, the dropper C is attached to the upper surface of the dropper insertion hole 144 so that the rear of the dropper C is magnetically attached to the magnetic head 147 as shown in FIG. Adsorbed.

Thereafter, as shown in FIG. 14, the piston rod 114a is advanced in a direction away from the magnetic head 91, so that the engagement between the draw-out pin 94 and the falling-off prevention portion 113 is released. The current to the arranged coil 100 is switched from the exciting current to the AC decaying current for degaussing, the dropper C magnetized by the magnetic head 91 is demagnetized, and the dropper C is released from the magnetic head 91. As a result, under the influence of the erecting magnetic head 147, the dropper C is held only in the dropper accommodating portion 145. In this manner, the dropper C completely pulled out from the stocker 10 is placed in the dropper accommodating portion 145.
Is temporarily fixed to In addition, a gap α is formed between the fall prevention unit 113 and the dropper C fixed to the dropper storage unit 145 in preparation for the retreat of the fall prevention unit 113 (see FIG. 14).

Thereafter, the moving base 110 is moved backward in the direction of arrow M in FIG.
The magnetic head 91 is connected to the slit 14 of the dropper housing 145.
6, and the fall prevention unit 113 is inserted into the dropper insertion hole 1.
The moving base 110 is returned to a predetermined position of the stocker 10 while passing through the inside 44. However, the magnetic head 9
By providing a mechanism for moving up and down in 1 and the fall prevention unit 113, it is possible to return to the stocker 10 while moving them in the order of arrows X, Y, and Z.

After the drawer C has been pulled out, the rotary actuator 143 is operated and the dropper accommodating section 145 is rotated 90 degrees in the direction of arrow N in FIG. Due to the influence, it is fixed to the dropper accommodating portion 145 and inverts. Thereafter, by switching the exciting current flowing through the coil 148 of the magnetic head 147 to the demagnetizing AC decay current, the dropper C is demagnetized and falls downward, and is sent to a threading mechanism (not shown). Such removal of the residual magnetism can eliminate the phenomenon that the droppers C are close to each other in the weaving process in the automatic loom.

The present invention is not limited to the embodiment described above. For example, as shown in FIG. 16, an elongated drawer pin 150 is provided on the top surface 91a of the magnetic head 91, and this drawer pin 150 is extended in a direction matching the elongated guide hole 1 of the lowermost dropper C. ing. By adopting such a drawer pin 150, the dropper C
, And a stable drawer is possible, the top surface (adsorption surface) 91a of the magnetic head 91 can be enlarged, and the falling-off prevention unit 113 can be eliminated. 17, a pair of left and right guide projections 151 are provided on the top surface 91a of the enlarged magnetic head 91, and these guide projections 1 are provided.
Reference numeral 51 is arranged so as to sandwich the drawer pin 94, and the interval between the guide protrusions 151 is slightly larger than the width of the dropper C. Therefore, the pair of guide protrusions 15
1, both sides of the dropper C can be sandwiched, so that when the lowermost dropper C is pulled out, lateral displacement of the lowermost dropper C can be prevented, and a stable dropper C
Is achieved. In addition, since the falling-off preventing portion 113 can be eliminated, the structure can be simplified.

Further, the dropper housing bottom surface (dropper support surface) 16 is not limited to the horizontal state as described above, and may be inclined rearward so as to be substantially horizontal. In this case, the front side of the dropper C in the stocker 10 is slightly lifted, so that the dropper group seated on the dropper housing bottom surface 16 can be further stabilized. For example, as shown in FIG. 18 and FIG. 19, by inclining the dropper accommodating bottom surfaces 16A and 16B, when the lowermost dropper C is magnetically attracted to the top surface 91a of the magnetic head 91, the dropper C is kept horizontal. You can get closer.

[0052]

The dropper withdrawing device and the dropper withdrawing method according to the present invention are configured as described above, so that the following effects can be obtained.

That is, in the dropper pull-out device according to the present invention, the magnetic head is disposed below the guide hole of the lowermost dropper and is made of an iron core of an electromagnet, and is projected from the top surface of the magnetic head. A plurality of droppers stacked vertically to form a group by including a drawer pin inserted into the lowermost guide hole and a driving unit for mounting the magnetic head and moving the magnetic head in the horizontal direction , The lowermost droppers can be pulled out one by one.

In the dropper withdrawing method according to the present invention, in a state where the droppers are vertically stacked, a pull-out pin of the magnetic head is inserted into the guide hole of the lowermost dropper, and the top of the magnetic head is inserted. After magnetically adsorbing the lower edge of the guide hole, the magnetic head is moved in the horizontal direction, the lowermost dropper is hooked on the drawer pin and pulled out, and a plurality of sheets are stacked vertically to form a group. The lowermost dropper can be reliably pulled out one by one from the dropper.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a stocker to which a drawer drawer according to the present invention is applied.

FIG. 2 is a sectional view taken along line II-II of the stocker shown in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a perspective view showing a main part of a dropper separating mechanism.

FIG. 5 is a side view showing a drawer pull-out device.

FIG. 6 is a front view showing a stocker to which a dropper drawer is applied.

FIG. 7 raises the suction head of the dropper separation mechanism,
It is sectional drawing which shows the state which made the top end approach the dropper.

FIG. 8 is a cross-sectional view illustrating a state in which the suction head is lowered to separate the lowermost dropper from the dropper group.

FIG. 9 is a cross-sectional view showing a state where the lowermost dropper is pulled out.

FIG. 10 is a side view showing a positional relationship between a dropper delivery mechanism and a dropper stocker.

FIG. 11 is a perspective view showing a dropper delivery mechanism.

FIG. 12 is a front view showing a state where the dropper pulled out by the magnetic head passes through the inside of the dropper accommodating portion.

FIG. 13 is a side view showing a state where the dropper is arranged in the dropper accommodating portion of the dropper delivery mechanism.

FIG. 14 is a side view showing a state where the pulled-out dropper is attached to the upper surface of the dropper insertion hole.

FIG. 15 is a front view showing a state in which the pulled out dropper is stuck to the upper surface of the dropper insertion hole.

FIG. 16 is a perspective view showing another embodiment of the magnetic head.

FIG. 17 is a perspective view showing still another embodiment of the magnetic head.

FIG. 18 is a cross-sectional view showing another embodiment of the stocker to which the dropper drawer of the present invention is applied.

FIG. 19 is a sectional view showing still another embodiment of the stocker to which the dropper pull-out device of the present invention is applied.

FIG. 20 is a perspective view showing an example of a dropper.

[Explanation of symbols]

C ... dropper, 1 ... guide hole, 3 ... guide hole peripheral part, 11 ...
Housing, 90: Dropper pull-out device, 91: Magnetic head, 91a: Attraction surface (top surface) of magnetic head, 92 ...
Linear unit (driving means), 94, 150: extraction pin, 100: coil, 151: guide projection piece.

Claims (6)

[Claims] 1. A dropper pull-out method for pulling out an arbitrary dropper in a state where a plurality of droppers made of a magnetic material are arranged side by side, wherein the dropper is vertically stacked, and a guide hole of the lowermost dropper is provided. Inside, the drawer pin of the magnetic head is inserted, and after the lowermost guide hole peripheral edge is magnetically attracted to the attracting surface of the magnetic head, the magnetic head is moved in the horizontal direction, and the lowermost dropper is moved. A method of pulling out a dropper, wherein the puller is pulled out by hooking the puller pin. 2. After the drawer of the lowermost stage has been pulled out, an exciting current flowing through a coil disposed around the magnetic head is switched to an AC decaying current for degaussing,
2. The method according to claim 1, further comprising: demagnetizing a peripheral portion of the guide hole magnetized by the magnetic head, and releasing the peripheral portion of the guide hole from the magnetic head. 3. A dropper pull-out device for pulling out an arbitrary dropper in a state where a plurality of droppers made of a magnetic material are arranged side by side, wherein an iron core of an electromagnet is arranged below a guide hole of the lowermost dropper. A magnetic head comprising: a drawer pin projecting from the top surface of the magnetic head to be inserted into the lowermost guide hole; and a drive for mounting the magnetic head and moving the magnetic head in a horizontal direction. Means for pulling out a dropper. 4. The dropper pull-out device according to claim 3, wherein said pull-out pin is formed elongated in a direction corresponding to said guide hole of said dropper. 5. The dropper pull-out device according to claim 3, wherein a pair of guide projections are formed on the top surface of the magnetic head at positions sandwiching the pull-out pin. 6. The drawer pull-out device according to claim 3, wherein said droppers are stacked vertically in a substantially horizontal state in a housing.