JPH09188418A - Workpiece supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent wear of a device, taking of two parts, and breakage by arranging a magazine on a base and providing a slider which suctions and holds the lowermost workpiece among workpieces stored in the magazine and a driving means which reciprocates the slider along a manufacture direction. SOLUTION: When a command for starting the supply of workpiece is given, a suction force producer 63c is operated to suction and hold a memory card M1 in the lowermost end part by suction force. An air cylinder 70 is operated in arrow X1 direction. When slider 60 moves up to a position which is shown by two-dots chain line, the operation of the suction force producer 63c is stopped, and the memory card M1 is carried out by a memory card conveyance device in the next process. Consequently, it becomes possible to supply memory card M one by one continuously until a memory card Mn at the uppermost position in a magazine 80 is supplied without using a two-parts taking detection device and a card lifting device and to manufacture a workpiece supply device inexpensively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work supply device for separately supplying works such as memory cards stacked in a magazine one by one, and particularly to wear of the device and removal of two parts. Regarding things that can prevent damage.

[0002]

2. Description of the Related Art Conventionally, a component supply device (work supply device) for supplying a plate-shaped hard component such as a memory card or a lead frame has been used. For example, in the component supply device 10 shown in FIG. 4, the memory cards M are horizontally stacked and accommodated in the magazine 11 having a rectangular frame shape, and the upper end opening 11 is formed.
The upper surface of the memory card M located at the uppermost side is sucked by the vacuum nozzle 12 from a and is transferred. Reference numeral 13 in FIG. 4 is a card elevating / lowering device for keeping the height position of the memory card M to be taken out constant, and 14 is a two-sheet takeout for detecting that two or more memory cards M are stuck and taken out in an overlapping state. The detection device is shown.

On the other hand, the component supply device 2 shown in FIG.
Reference numeral 0 denotes a flat plate-like bottom plate 21, a magazine 22 arranged to face the bottom plate 21, and a lower end supply portion 22a of the magazine 22.
Of the memory cards M supplied from, the separating mechanism (escapement) 23 that separates by pushing only the memory card M located at the lowermost end is provided. In addition,
The separating device 23 includes a cylinder 24 that operates along the arrow X direction in FIG. 5A, and a shuttle 25 that is attached to the tip of the cylinder 24 and that engages only with the memory card M at the lowermost end in the magazine 22. Is equipped with. In such a component supply device 20, the cylinder 24 is operated to cause the shuttle 25 to reciprocate along the arrow X direction in FIG. 5A, whereby the tip of the shuttle 25 abuts against the end of the memory card M. I was allowed to send them one by one.

[0004]

However, the above-mentioned conventional parts supply apparatus has the following problems. That is, the upper end supply portion 11a of the magazine 11 as shown in FIG.
In the component supply device 10 for taking out the memory card M from the
Since the card elevating device 13 and the double pickup detecting device 24 are required, there is a problem that the device becomes expensive.

On the other hand, in the component supply device 20 for taking out the memory card M from the lower end supplying portion 22a of the magazine 22 as shown in FIG. 5A, the memory card M to be taken out is loaded with a large number of memories. The card M presses the bottom plate 21. Therefore, a predetermined escape force F is required to separate and send out only the memory card M at the lowermost end. Here, the coefficient of friction between the memory cards M is μ, the coefficient of friction between the memory card M and the bottom plate 21 is μ ′, the mass of the memory card M is ω,
When the number of stacked memory cards M is n, the escape force F is F = [μ (n−1) + μ′n] ω (1)

Therefore, since the required escape force F increases as the material having a large friction coefficient and the number of laminated layers increase, it is necessary to increase the output of the air cylinder 24. Further, as the escape force F increases, the air cylinder 24 and the shuttle 25 may be worn or the magazine 22 may be damaged via the stacked memory cards M. Further, in the case of a hard and brittle material such as the memory card M or ceramic, the parts themselves may be damaged.

In view of the above, the present invention is capable of producing a work feeding device for feeding the works one by one from the lower end feeding portion of a magazine accommodating a plurality of works in a stacked manner, and at the same time, preventing wear of the device and damage of the works. The purpose is to provide what can be done.

[0008]

In order to solve the above problems and achieve the object, the present invention according to claim 1 relates to the above-mentioned work from a lower end supply portion of a magazine in which a plurality of works are stacked and accommodated. In a work supply device that feeds the sheets one by one, a base on which the magazine is installed, and a bottom end portion of the works housed in the magazine and reciprocally arranged on the base in a predetermined direction. A slider for sucking and holding the work and a driving means for reciprocating the slider along the predetermined direction are provided.

According to the second aspect of the present invention, the first aspect is provided.
In the invention described in (1), it is preferable that the work is provided with a regulation unit that regulates movement of the work other than the work attracted to the slider in the predetermined direction.

In the invention described in claim 3, claim 1
Alternatively, in the invention described in Item 2, it is preferable that the suction means includes a suction hole formed on the upper surface of the slider, and a decompression means for generating a suction force in the suction hole.

According to the invention described in claim 4, claim 1
In the invention described in any one of claims 1 to 3, it is preferable that an engaging portion that restricts relative movement of the workpiece attracted to the slider with respect to the slider is provided on the upper surface of the slider.

According to the invention described in claim 5, claim 4
In the invention described in (1), it is preferable that the engaging portion is a recess formed in the slider at a depth that does not exceed the thickness of the work.

[0013] As a result of taking the above measures, the following effects occur. That is, in the invention described in claim 1, in the work supply device that feeds the works one by one from the lower end supply unit of the magazine in which a plurality of works are stacked and accommodated, the work supplied from the lower end supply unit to the slider on the slider is Adsorbed and held by the slider. Further, since the slider is driven by the driving means along the predetermined direction, frictional force is generated on both surfaces of the work. At this time, the frictional force applied to the upper surface of the work is based on the weight of the work in the magazine, and the frictional force applied to the lower surface of the work is based on the weight of the work in the magazine and the suction-held force. . That is, the frictional force applied to the lower surface of the work is larger than the frictional force applied to the upper surface of the work. Therefore, when a driving force is applied to the slider, the upper surface side of the work slides first. Therefore, the work at the lowermost end can be transferred from the magazine in a predetermined direction.

According to the second aspect of the present invention, since the work is attached to the slider among the works, that is, the restricting means for restricting the movement of the work excluding the work at the lowermost end in a predetermined direction is provided. Only part of the work can be transferred, and it is possible to prevent double picking.

According to the third aspect of the present invention, since the work is sucked and held by the suction hole formed on the upper surface of the slider, the material of the work is not limited. In the invention described in claim 4, since the engaging portion for restricting the relative movement of the work piece attracted to the slider with respect to the slider is provided on the upper surface of the slider, based on the deviation of the distribution of the frictional force applied to the work piece. It is possible to prevent the rotation and movement of the generated work.

According to the invention described in claim 5, since the engaging portion is a recess formed in the slider to a depth not exceeding the thickness of the work, the work at the lowermost end when the work is pushed out in a predetermined direction. You can apply a force to push only.

[0017]

1 and 2 are views showing a component supply device 30 as a work supply device according to an embodiment of the present invention. Here, FIG. 1 is a side view showing a part cutaway of the component supply device 30, and FIG. 2 is an enlarged sectional view showing a main part of the device 30. In these figures, FIG. 4 and FIG.
The same reference numerals are given to the same functional parts as.

In the figure, M (M1, M2, M3, ..., M
n) shows a memory card (work) having a constant thickness T. Among the memory cards M, the memory card M1 is the lowest memory card, and M2 is the memory card M.
1 is a memory card immediately above, M3 is a memory card immediately above the memory card M2, and Mn is a memory card at the uppermost position.

The component supply device 30 includes a base 40, a linear motion guide portion 50 fixed on the base 40 and guiding a slider 60 described later in the direction of arrow X in FIG. 1, and the linear motion guide portion 50 shown in FIG. A slider 60 reciprocally attached along the direction of the middle arrow X and an air cylinder 70 for reciprocating the slider 60 are provided.

A magazine 80, which will be described later, is removably mounted on the base 40 by a mounting portion (not shown), and the memory card M1 is arranged from the lower end supply portion 81 thereof to be mounted on the slider 60 by its own weight. There is.

The slider 60 is a plate-shaped slider body 61.
And a pair of slide portions 62a and 62b attached to the lower surface of the slider body 61 and reciprocally attached to the linear motion guide portion 50, and an adsorption mechanism 63 for adsorbing and holding the memory card M. There is.

The upper surface of the slider body 61 is composed of an upper step portion 61a on the left side in FIG. 1 and a concave portion 61b on the right side in FIG. The recess 61b is formed with a constant depth t,
The depth t is slightly smaller than the thickness T of the memory card M.

The suction mechanism 63 includes a suction hole 63a exposed on the upper surface of the recess 61b of the slider body 61 and the suction hole 63a.
An intake pipe 63b connected to a and formed inside the slider body 61, and a suction force generation device 63c connected to the base end of the intake pipe 63b are provided.

The air cylinder 70 is connected to the left end of the slider body 61 in FIG. 1 and has a function of reciprocating the slider 60 in the direction of arrow X in FIG. 1 at a timing described later.

The magazine 80 is detachably attached to the base 40 and has a rectangular cylindrical magazine body 81 capable of accommodating n memory cards M therein. The magazine body 81 has four wall surface portions 82 to 85 (85
Is not shown). In FIG. 1, reference numeral 81a indicates an upper end opening portion and 81b indicates a lower end supply portion.

On the other hand, the upper end portion 82a of the wall surface portion 82-85
85a (85a is not shown) are formed to have the same height. Further, the lower end portion 82b of the wall surface portion 82-85
85b is formed such that the height positions from the recess 61b of the slider 61 main body are as follows. That is, the height t'of the lower end portion 82a of the wall surface portion 82 is arranged lower than the thickness T of the memory card M from the recess 61b and higher than the depth t of the recess 61b as shown in FIG. Further, the height t ″ of the lower end portion 84a of the wall surface portion 84
Is formed to be higher than the thickness T of the memory card M and lower than twice the thickness T of the memory card M.
Furthermore, the lower end portions 83b of the wall surface portions 83 and 85,
85b (85b not shown) is the reference surface 60b of the recess 60a.
It is located almost at the same height as.

In the component supplying apparatus 30 thus constructed, the memory cards M are supplied one by one as follows.
That is, as a preparatory step, the air cylinder 70 is operated in advance to position the slider 60 at the position indicated by the solid line in FIG. Next, the magazine 80 in which a plurality of memory cards M are stacked and accommodated is attached to the base 40 at the lower end supply portion 81b.
At this time, among the memory cards M in the magazine 80, the memory card M at the lowermost end is placed so that the left end of the memory card M1 contacts the predetermined position on the recess 61b of the slider 60, that is, the boundary with the upper step 61a. To do. In this way, the preparation stage is completed.

Then, in accordance with the supply start command, the suction force generator 63c is operated to suck and hold the memory card M1 at the lowermost end with the suction force P. Then, the air cylinder 70 is operated in the arrow X1 direction in FIG. At this time, the frictional force applied to the memory card M1 at the lowermost end is as shown in FIG. Here, the suction force generated by the suction force generation device 63c is P,
If the coefficient of friction between the memory cards M is μ, the coefficient of friction between the memory card M and the recess 61b is μ ″, and the mass of the memory card M is ω, the frictional force f applied to the upper surface side of the memory card M is f = μ (N-1) ω ... (2) On the other hand, the frictional force f ′ applied to the lower surface side is f ″ =
μ ″ (nω + P). Therefore, if μ and μ ″ are substantially equal, then f <f ′.

Therefore, when the force F'pushing the slider 60 by the air cylinder 70 reaches the frictional force f, the memory card M1 at the lowermost end is the memory card M immediately above it.
2, and starts moving in the direction of arrow X1 in FIG. If the memory card M1 at the lowermost end and the memory card M2 immediately above it are not separated for some reason, and are separated from the memory card M3 thereabove, the memory card M2 immediately above is the wall surface part. Engages the lower end 84b of 84,
Movement is restricted. As a result, only one memory card M is held in the recess 61b and transferred in the direction of arrow X1 in FIG.

Next, when the slider 60 moves to the position shown by the chain double-dashed line in FIG. 1, the operation of the suction force generator 63c is stopped, and the memory card M1 is moved by the memory card carrier (not shown) in the next step. Carry out. The memory card M2 in the magazine 80 is placed on the upper stage portion 61a.

Next, when the air cylinder 70 is operated and the slider 60 is returned to its original position, that is, the position shown by the solid line in FIG. 1, the memory card M2 on the upper step portion 61a has the wall surface portion 4
The second lower end 42b is engaged with the second lower end 42b to move onto the recess 61b.
In this state, the suction force generator 63c causes the memory card M
2 is adsorbed and held, and is similarly supplied.

In this way, it is possible to continuously supply the memory cards M one by one until the uppermost memory card Mn in the magazine 80 is supplied. As described above, in the component supply device 30 according to the present embodiment, the memory cards M can be continuously supplied one by one without using the two-sheet picking detection device and the card elevating / lowering device, so that the device can be manufactured at low cost. Can be manufactured. Further, the maximum force required for the air cylinder 70 may exceed the frictional force f between the memory card M1 at the lowest position and the memory card M2 immediately above it and the force for moving the slider 60. About half the force is enough. Therefore, a small air cylinder 70 can be used. Therefore, the wear of the apparatus is significantly reduced and the magazine 80 is not burdened. Further, the supply of the memory card M becomes very stable. On the other hand, if an air cylinder having the same thrust as the conventional one is used, twice as many memory cards M can be accommodated in the magazine 80.

Further, when the slider 60 is moved, if the distribution of the frictional force on the upper surface and the lower surface of the memory card M is not uniform, the memory card M has a relative movement force with respect to the slider body 61. Since the end portion of the card M is in contact with the boundary between the upper step portion 61a and the concave portion 61b, the memory card M does not move from the positioned position.
For this reason, it is possible to move to the next step in the state where it is positioned.

The present invention is not limited to the above embodiment. That is, in the above embodiment, the flat-shaped memory card M is used as the work, but the work is not limited to the memory card M. Further, the work is not limited to the flat work as long as the works are laminated so as to be slidable in a predetermined direction. Further, although vacuum suction is performed as the suction means, magnetic suction may be used. In addition, it goes without saying that various modifications can be made without departing from the spirit of the present invention.

[0035]

According to the invention described in claim 1, in a work supply device for feeding the works one by one from a lower end supply part of a magazine in which a plurality of works are stacked and accommodated, a magazine is transferred from the lower end supply part to a slider. The supplied work is attracted and held by the slider. Further, since the slider is driven by the driving means along the predetermined direction, frictional force is generated on both surfaces of the work. At this time, the frictional force applied to the upper surface of the work is based on the weight of the work in the magazine, and the frictional force applied to the lower surface of the work is based on the weight of the work in the magazine and the suction-held force. . That is, the frictional force applied to the lower surface of the work is larger than the frictional force applied to the upper surface of the work. Therefore, when a driving force is applied to the slider, the upper surface side of the work slides first. Therefore, the work at the lowermost end can be transferred from the magazine in a predetermined direction.

According to the second aspect of the present invention, since the work is attached to the slider among the works, that is, the restricting means for restricting the movement of the work excluding the work at the lowermost end in a predetermined direction is provided. Only part of the work can be transferred, and it is possible to prevent double picking.

In the invention described in claim 3, since the work is sucked and held by the suction hole formed on the upper surface of the slider, the material of the work is not limited. In the invention described in claim 4, since the engaging portion for restricting the relative movement of the work piece attracted to the slider with respect to the slider is provided on the upper surface of the slider, based on the deviation of the distribution of the frictional force applied to the work piece. It is possible to prevent the rotation and movement of the generated work.

In the invention described in claim 5, since the engaging portion is a recess formed in the slider to a depth not exceeding the thickness of the work, the work at the lowermost end when the work is pushed out in a predetermined direction. You can apply a force to push only.

[Brief description of the drawings]

FIG. 1 is a side view showing a part supply device according to an embodiment of the present invention with a part cut away.

FIG. 2 is a cross-sectional view showing an enlarged main part of the apparatus.

FIG. 3 is a side view for explaining a driving force required in the device.

FIG. 4 is a side view showing a conventional work supply device with a part thereof cut away.

FIG. 5 is a side view showing another conventional work supply device.

[Explanation of symbols]

 30 ... Component supply device 40 ... Base 50 ... Linear motion guide portion 60 ... Slider 61 ... Slider body 61a ... Upper step portion 61b ... Recessed portion 63a ... Suction hole 63c ... Suction force generating device 70 ... Air cylinder 80 ... Magazine 81 ... Magazine body 81b ... Lower end supply section 82-84 ... Wall surface section M, M ', M "... Memory card

Claims (5)

[Claims] 1. A work supply device for feeding the works one by one from a lower end supply unit of a magazine containing a plurality of works in a stack, and a base on which the magazine is installed and a reciprocating motion on the base along a predetermined direction. A slider which is freely arranged and holds the work at the lowermost end among the works stored in the magazine by suction, and a drive means for reciprocating the slider along the predetermined direction are provided. Work supply device. 2. The work supply apparatus according to claim 1, further comprising: a restricting unit that restricts movement of the work other than the work attracted to the slider in the predetermined direction. 3. The suction means according to claim 1, wherein the suction means includes suction holes formed on the upper surface of the slider, and pressure reducing means for generating suction force in the suction holes. Work supply device. 4. The work supply according to claim 1, wherein an engagement portion is provided on the upper surface of the slider to restrict a relative movement of the work adsorbed to the slider with respect to the slider. apparatus. 5. The work supply apparatus according to claim 4, wherein the engagement portion is a recess formed in the slider at a depth not exceeding the thickness of the work.