JPH0770857B2 - Stack magazine supply method and apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a stack magazine in which a large number of electronic parts are stored, which are stacked obliquely to sequentially supply the internal electronic parts, and then to the empty state. The present invention relates to a stack magazine supply method and device for discharging the stack magazines in the lower stage and lowering the stack magazines in the subsequent stages one by one.

[Conventional technology]

2. Description of the Related Art Conventionally, a stack magazine in which a large number of chip-shaped electronic components such as ICs are arranged and stored is supplied.

FIG. 14 shows an example of such a stack magazine (hereinafter referred to as “stack”). A large number of electronic components (hereinafter referred to as “components”) 2 are provided in a hollow stack 1.
Are lined up and stored, and rubber caps are
3 and 3 are attached to prevent the parts stored inside from falling off.

At least the rubber caps on the tip side of the above stacks are removed, and a plurality of stacks are stacked diagonally, and the parts stored inside from the bottom stack slide down on the shute by their own weight, and they are adsorbed and held one by one at their ends. In a component supply device that supplies a predetermined position by discharging the emptied stack to the outside and sequentially lowering the next and subsequent stacks, a large number of components can be continuously taken out.

Conventionally, as this type of stick supply device, for example, a device shown in Japanese Patent Laid-Open No. 60-148197 is known.

The outline thereof will be briefly described with reference to FIGS. 15 to 17. A plurality of the stacks 1 are obliquely stacked in the carrier cassette 4 with the rubber caps 3, 3 at both ends removed, and the lower surface of the sheath 5 is attached. It is supported by one end 5a and the bottom surface 4e of the carrier cassette 4.

In this state, the components 2 housed inside from the tip side of the lowermost stack 1a slide down sequentially on the shute 5 by its own weight, and then are picked up at the lowermost end and sent to the next step.

When the component 2 of the lowermost stack 1a is emptied and a sensor (not shown) detects it, the supporting cylinder 6 operates and the supporting member 6a fixed to the tip of the rod is placed in the rear end of the next stack 1b. At the same time, the take-out arm 7 grasps the stick 1a from below with its claw 8 and moves it in the direction of arrow A in FIG. 15 to bring it to the state shown in FIG. At this time, there is also one in which the support on the rear end side of the stack 1a is released.

As a result, the tip portion of the stick 1a is separated from the right end portion of the shute 5, and then the take-out arm 7 is rotated counterclockwise.
When the grip is released, the stack 1a drops and the stacks after the next stack 1b descend one step at a time due to their own weight, resulting in the state shown in Fig. 17, and the parts stored in the stack 1b continue to be shut down. 5 supplied.

[Problems to be Solved by the Invention]

However, in such a conventional stack supply method and apparatus thereof, when the lowermost stack is discharged,
Since the rear end of the next-stage stack is supported by inserting a support member, the rubber caps attached to both ends of the stack should be attached not only to the front end side where the parts are supplied but also to the rear end. The side must also be removed.

Therefore, when the stick is obliquely set on the carrier cassette, the internal parts are likely to be scattered, which causes a problem in workability during storage.

Moreover, since the cross-sectional shape of the stack varies widely depending on the shape of the stored parts and is not standardized at all, it is necessary to prepare the support portion of the support cylinder for each type of stack, and further, the lowermost stage. Since the space between the next stage and the next stage is also different, adjusting the height of the support cylinder was troublesome.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a stack supply method and an apparatus thereof, in which internal parts are less likely to scatter during stack setting and can be shared by many types of stacks without adjustment. And

[Means for Solving the Problems]

In order to achieve the above object, the stack supply method according to the present invention is such that a plurality of stacks accommodating a large number of parts are stacked at an angle, the parts are taken out from the bottom stack, and the empty bottom stack is removed. Move it diagonally upward in the longitudinal direction to remove the support on the front end side and support the front end side of the next-stage stack to form a gap between both the above-mentioned stacks, and use this gap to set the rear end of the next-stage stack. The side is lifted up and supported, the lowermost stack is allowed to fall freely, and then the support at both ends of the next-stage stack is released to lower the stacks of the next and subsequent stages one by one.

Further, the stack supply device according to the present invention is a device for carrying out the above method, and is a device for detecting the presence or absence of a component in the lowermost stack, and a signal indicating that there is no component from the detection device. The lowermost stack is pushed diagonally upward in the longitudinal direction to release the support on the leading end side and allow it to descend due to its own weight, while supporting the leading end side of the next-staged stack between the leading end sides of both of the above-mentioned stacks. A gap forming means for forming a gap and a separating means which is inserted into the gap formed by the gap forming means and lifts the rear end side of the next-stage stack to separate the next and subsequent stacks from the lowermost stack. It is provided.

[Work]

According to the above-described stack supply method and apparatus, when the lowermost stage of the stacked stacks becomes empty, first, the stacks are slanted upward to remove the support on the tip side and the tip side of the next-stage stack. Support.

As a result, the tip side of the lowermost stack falls due to its own weight, and a triangular gap is formed between it and the next-stage stack. Therefore, when the rear end side of the next and subsequent stacks is lifted by utilizing this gap, the lowermost stack is freely dropped.

At this time, it is not necessary to remove the rubber caps at both ends of the stack as in the conventional device in which the supporting member for supporting the rear end side of the next stage is inserted inside the rear end of the stack. The risk is halved and work efficiency is improved.

Further, it is not necessary to provide the above-mentioned supporting members corresponding to various kinds of sticks, and the height adjustment thereof is also unnecessary.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 13 of the accompanying drawings, in which portions corresponding to FIGS. 15 to 17 are designated by the same reference numerals.

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is a side sectional view thereof.

Guide plates 4a, 4b are provided in front of and behind a carrier cassette 4 for accommodating a plurality of stacks 1 each accommodating a large number of components 2 in a stack.
Is provided to regulate the position of the stack 1 in the longitudinal direction.

A window 4c is provided at the bottom of the guide plate 4a, and the bottom stack 1a is provided.
The upper part of the outer frame is supported so that the internal part 2 can flow out and slide down onto the shute 5 by its own weight, and the window 4d is provided at the lower part of the guide plate 4b so that the stick 1 can be inserted. Further, a cassette bottom plate 4e is provided integrally with the guide plates 4a and 4b on the extension surface of the shout 5, and the cassette bottom plate 4e and one end 5a of the shout 5 can support only both ends of the stick 1a.

An air cylinder 10 is provided below the shout 5, and a pressing plate 11 is fixed to the tip of a rod 10a of the air cylinder 10 to form a pressing device for the stick 1a. As shown in detail in FIG. 3, the pressing plate 11 is formed in a U shape and moves on the surface side in the width direction of the shute 5, and presses both side walls of the tip of the lowermost stack 1a. Then, the upper surface can support the lower surface of the next-stage stack 1b by the movement at the same time.

Then, by extending the rod 10a of the air cylinder 10 obliquely upward and rightward in FIG. 2, the pressing plate 11 integral with the rod 10a pushes the lowermost stack 1a in the same direction, and the tip portion of the stick 1a is shut. A gap forming means is formed so as to be separated from one end 5a of 5 and dropped by its own weight, and the lower surface of the next-stage stack 1b is supported by the pressing plate 11 to form a gap between the front ends of the stacks 1a and 1b. To do.

Further, an air cylinder 12 is provided on the side of the stack 1 on the cassette bottom plate 4e at an inclination angle larger than the inclination angle of the stick 1, and a small pin cylinder 13 operated by air is fixed to the tip of the rod 12a. Pin of pin cylinder 13
13a is projected toward the stack 1 side, and the rear end side of the next-stage stack 1b is lifted to bring the lowermost stack 1a.
And a separating means for separating from.

In FIG. 2, reference numeral 14 denotes a sensor such as a reflection type photo sensor provided on the upper part of the shout 5, and the lowermost stack 1a.
A detection means for detecting the presence / absence of a component inside is configured.

Usually, a plurality of the above lines are arranged in parallel,
Different kinds of parts are supplied as needed.

FIG. 4 is a block diagram showing the control system of this device. When a signal with no parts is input from the sensor 14 to the control circuit 15, a command from the control circuit 15 causes the solenoid valves 16, 17, 18 to pass through. The air cylinders 10 and 12 and the pin cylinder 13 are operated.

FIG. 5 is a time chart showing the operation timings of the sensor 14, the air cylinders 10 and 12, and the pin cylinder 13 described above.

Next, the operation of this embodiment having the above construction will be described with reference to FIGS. 5 and 7 to 11 according to the flow chart shown in FIG.

When a plurality of stays 1 from which one rubber cap 3 has been removed are stacked in the carrier cassette 4 and the other rubber cap side is placed on the rear side, the parts 2 flow out from the tip side of the lowermost stack 1a and the shut 5 The parts which are aligned on the top and slide down and reach the end of the shute 5 are picked up by a parts mounting device (not shown) and sent to the next step.

The supply of the component from the stick 1a is always detected by the sensor 14. However, when the component suddenly enters the state shown in FIG. 7, the signal from the sensor 14 is input to the control circuit 15.

When this signal is received, the solenoid valve 16 is switched by a command from the control circuit 15, the air cylinder 10 is operated, and the rod 10 is operated.
a is projected, and the pressing plate 11 at the tip thereof pushes the lowermost stack 1a backward to move it in the longitudinal direction, and the tip side thereof is disengaged from the one end 5a of the shout 5, and at the same time the upper surface of the pressing plate 11 It supports the tip of the stepped stack 1b and prevents its fall.

As a result, the tip end side of the lowermost stack 1a hangs down as shown in FIG. 8, and a triangular gap S is formed between it and the next-stage stack 1b.

In this state, the rear end side of the stack 1a is still pressed against the cassette bottom plate 4e by the next and subsequent stacks, so if the pressing force is weak, the stack 1a overcomes the pressing force by its own weight and falls. , If it is strong, it may not fall.

Therefore, in order to ensure the fall of the stick 1a, the solenoid valve 18 is switched and the pin cylinder 13 is operated at a predetermined time after the operation of the air cylinder 10 to insert the pin 13a into the gap S. After that, the solenoid valve 17 is switched to operate the air cylinder 12 to project the rod 12a. Since the inclination angle of the air cylinder 12 is larger than the inclination angle of the stick 1, the protrusion of the rod 12a causes the pin cylinder 13 to rotate.
Pin 13a of is to lift the rear end of the next stack 1b,
The stacks 1 on and after the next stage are completely separated from the stack 1a on the bottom stage and dropped. At this time, the gap S into which the rod 12a is inserted has a considerable size.
No height adjustment of a is required.

Here, the solenoid valve 17 is switched to switch the rod of the air cylinder 12.
After retracting 12a, switch solenoid valve 18 to change pin cylinder 1
The pin 13a of 3 is retracted, and the rear end side of the next-stage stack 1b is dropped onto the cassette bottom plate 4e. Subsequently, the solenoid valve 16 is switched to retract the rod 10a of the air cylinder 10, and the pressing plate 11
If you remove the support on the tip side of the next-stage stack 1b from above and drop it onto the shute 5, the stacks after the next stage will drop one step at a time, and the stack 1b will move to the bottom stage and the parts Supply is made.

In this way, when the stacked stacks are repeatedly exchanged and all the parts in the stacks are exhausted, the last stack is discharged and the supply of the parts is completed.

12 and 13 are a plan view and a side sectional view showing another embodiment of the present invention in which a link mechanism is used instead of the pin cylinder 13 which constitutes the gap forming means.

In this embodiment, the air cylinder 22, as in the previous embodiment,
It is provided parallel to the stack 1 in the plan view shown in FIG. 12 and at an angle stronger than the inclination angle of the stack 1 in the side sectional view shown in FIG. 13, and is mounted on a movable plate 23 movable in the axial direction of the air cylinder 22. The L-shaped lever 25 is pivotally attached to the shaft 24, and the spring
The bending portion 25a is urged in the clockwise direction by the air cylinder 2
The rod 22a of No. 2 is engaged with the tip of the rod.

A stopper pin 27 is planted on the movable plate 23 to regulate the rotatable range of the lever 25, and the movable plate 23 itself is regulated in its movement limit by a stopper pin 28 provided in the fixed portion, and a left side in the figure is shown by a spring 29. Is being urged toward.

Now, when the rod 22a of the air cylinder 22 projects from the state shown by the solid line in FIG. 12, the lever 25 turns counterclockwise against the urging force of the spring 26, abuts the stopper pin 27, and is shown by the phantom line in the same figure. And one end side of the lever 25 has the above-mentioned gap S (first
(Fig. 13) Enter inside.

After the lever 25 contacts the stopper pin 27, the rod 22a
When is further projected, the movable plate 23 moves to the right against the spring 29, and the lever 25 lifts the rear end side of the next-stage stack 1b to free the lowermost stack 1a.

According to this embodiment, since only one air cylinder for lifting the rear end of the next-stage stack 1b is required, the pin cylinder and the solenoid valve for controlling it in the previous embodiment are unnecessary,
It can be supplied at low cost.

FIG. 18 is a side sectional view showing still another embodiment of the present invention. The same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

In the figure, 30 is a rotation support arm, one end of which is rotatably supported on an upper portion of a guide plate 4b of the carrier cassette 4, and the other end of the guide plate 4b and the rotation support arm is clockwise by a spring 31. It is biased, and its stopping position is regulated by the locking claw 32. 33 is an air cylinder fixed to the base 9,
By pressing a pin 35 protruding from the rotation support arm 30 via a link 34 rotatably supported on the base 9, the rotation support arm can be rotated counterclockwise.

In the first embodiment, the guide plate 4b of the carrier cassette 4 is used.
Although the bottom plate 4e is not movable, in this embodiment, the first plate
In the state of FIG. 19 showing the same state as that of FIG. 9 among the operations of the embodiment, the air cylinder 33 is biased by a solenoid valve (not shown), and the link 34 presses the pin 35 to rotate the supporting arm. The stick 1a is dropped by rotating the counterclockwise 30 by a predetermined angle and releasing the engagement with the rear end of the stick 1a.

After a lapse of a predetermined time, the link 34 is separated from the pin 35 by releasing the bias of the air cylinder 33, so that the biasing force of the spring 31 causes the rotation support arm 30 to rotate in the clockwise direction by the same angle, and the initial position After the return, the separating means is returned to the initial position, and the rear end of the next-stage stack 1b is engaged with the rotation support arm 30.

Further, in the above-described first embodiment, when the sensor 14 detects that there is no component, the lowermost stack is pushed rearward in the longitudinal direction by the gap forming means, and after removing the support of the tip, the separating means is operated again. The lower empty stack is separated from the carrier cassette, but in this embodiment, when the sensor 14 detects that there is no component, only the separating means is operated, and the pin 13a is provided between the lowermost and the next. The vibration of the stack due to the collision between the stick and the pin 13a when inserting the plug causes the electronic component jammed in the lowermost stack to slide down on the shute 5.

After the sensor 14 detects again that there is no component, the same operation as in the first embodiment is performed.

〔The invention's effect〕

As described above, according to the present invention, the empty bottom stack is pushed rearward to release the support of the leading end, and the leading end of the next stack is supported so that the gap between the two stacks is increased. Is formed and the rear end side of the next-stage stack is lifted by using the gap so that the lowest-stage stack can be freed, so that the discharge of the lowest-stage stack and the supply of the next-stage stack can be performed smoothly. It can be done reliably.

Also, unlike the conventional device of the same type, it is not necessary to insert the support member into the inside of the next-stage stack when replacing the stack, so it is not necessary to remove one of the rubber caps at both ends of the stack, and it is not necessary to disperse the parts when setting the It is possible to improve the work efficiency by reducing the risk of being half.

Further, it becomes possible to use the support member of the next-stage stack in common for all the stacks, and it is not necessary to adjust its height or the like.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 2 is a side sectional view of the same, FIG. 3 is an explanatory view showing the relationship between the pressing plate and the stick, and FIG. 4 shows its control system. FIG. 5 is a block diagram showing the operation, FIG. 5 is a time chart showing the operation timing of each part, FIG. 6 is a flow chart showing the operation, and FIGS. 7 to 11 are explanatory views showing the different operation states, and FIG. FIG. 13 is a plan view of an essential part showing another embodiment of the present invention, FIG. 13 is a side view of the essential part of the same, FIG. 14 is a perspective view showing a cutaway part of an example of the stick, and FIGS. The drawings are illustrations showing different operating states of the conventional stick supply device. FIG. 18 is a side sectional view showing still another embodiment of the present invention, and FIG. 19 is an explanatory view showing its operating state. 1 …… Stick magazine 2 …… Electronic parts 3 …… Rubber cap 4 …… Carrier cassette 5 …… Shut 10,12,22,33 …… Air cylinder 11 …… Pressing plate, 13 …… Pin cylinder 14… … Sensor, 15 …… Control circuit 16,17,18 …… Solenoid valve, 23 …… Movable plate 25 …… Lever, 26,29 …… Spring 27,28 …… Stopper pin, 30 …… Rotating support arm 32… … Locking claw, 35 …… Link S …… Gap

Claims (2)

[Claims] 1. A plurality of stack magazines accommodating a large number of electronic parts are stacked at an angle, the electronic parts are taken out from the lowest stack magazine, and the empty stack magazine is moved backward in its longitudinal direction. And remove the support on the front end side and support the front end side of the next-stage stack magazine to form a gap between the two stack magazines.
Using the gap, the rear end side of the next-stage stack magazine is lifted up and supported, the lowermost stack magazine is freely dropped, and then the both ends of the next-stage stack magazine are A method for supplying a stack magazine, which is characterized by releasing the support and lowering the stack magazines of the next and subsequent stages one by one. 2. A plurality of stack magazines accommodating a large number of electronic components are stacked at an angle, the electronic components are taken out from the bottom stack magazine, and the empty stack magazine is discharged to the outside. In a stack magazine supply device in which the following stack magazines are lowered one step at a time, a detection means for detecting the presence / absence of an electronic component in the lowest stack magazine, and a signal indicating no component from the detection means are received. The stack magazine in the lowermost stage in the longitudinal direction rearward to release the support on the leading end side and allow it to descend due to its own weight, while supporting the leading end side of the next stacking magazine, Gap forming means for forming a gap between the leading ends of the magazines, and a stack magazine for the next stage inserted into the gap formed by the gap forming means. A stack magazine feeding device comprising: a separating means for lifting the rear end side of the stack and separating the stack magazines of the next and subsequent stages from the stack magazine of the lowermost stage.