JPH0442270Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a magazine stocker in an IC handler that has a function of stacking magazines containing ICs and sending them out by sequentially lowering them by their own weight.

[Prior art]

The IC handler sequentially transports a large number of ICs and
It was attached to a measurement socket for testing electrical performance, and then removed from the measurement socket.
This is an automatic device that classifies ICs according to their inspection results and transports them.

Shutrails are mainly used to transport ICs within the IC handler, but when supplying and transporting ICs to and from the IC handler,
An IC magazine is used.

FIG. 3 is a perspective view comparing the IC 1 and the magazine 2.

In order to sequentially supply a large number of the magazines 2 to the IC handler, a magazine stocker as shown in FIG. 4 is used. The magazine stocker is equipped with a pair of guide columns 3, which are columnar members each having a U-shaped cross section, with the U-shaped recesses facing each other, and both ends of the magazines 2 are fitted into the recesses, and the magazines 2 are stacked and stored. Ru. Then, when the lowest magazine 2' is sent to the next process, the magazines above it slide down by their own weight.

FIG. 5 shows an example of a state in which the IC 1 is being transported by the shuttle rail 4.

Therefore, there are various types of ICs, large and small. Third
The illustrated magazine 2 has various shapes and dimensions depending on the dimensions of the IC 1.

Furthermore, in order to transport ICs of various sizes using one shoot rail, a shoot rail 5 having an E-shaped cross section as shown in FIG. 6 is used.

Figure 6A shows a state in which a large-sized IC1a is being transported, Figure 6B shows a state in which a medium-sized IC1b is being transported, and Figure 6C shows a state in which a small-sized IC1c is being transported. It is a diagram.

In addition, in order to construct a guide column that can be applied to magazines of various sizes, as shown in FIG. A conceivable configuration is to support them in parallel and move them toward and away from each other as shown by arrows a, a' and b, b' (hereinafter referred to as a tentative guide angle). However, when a magazine stocker is constructed using the guide angles 3a and 3b of this draft, the following problems occur.

In FIGS. 6A, B, and C, M indicates the center line of the shoot rail 5.

When transporting a large IC 1a (FIG. 6A), the center line of the IC 1a coincides with the above-mentioned M.

However, when a medium-sized IC 1b is transported (FIG. 6B), the center line m _b of the IC 1b does not coincide with the above-mentioned M. Even when transporting a small IC 1c (FIG. 6C), the center line m _c does not coincide with M.

As mentioned above, depending on the size of the IC to be conveyed, its center line moves with respect to the center line of the shoot rail 5, so in the draft plan shown in FIG. The magazine 2 that has been guided down by the magazine 2 and the IC 1 that has been transported by the shoot rail (E-shaped cross section) 5 do not necessarily face each other directly.

Eliminating the above-mentioned problems and smoothly and quickly adapting to the transportation of magazines and the insertion and removal of ICs into and from the magazines, regardless of the size of the IC, is the seventh goal.
For the example in the figure, a pair of guide angles 3
This is accomplished by moving the pair of guide angles 3a, 3b and the shoot rail 5 relative to each other in the X-axis direction. In order to achieve this function, the inventor of the present invention reciprocates a movable base supporting a guide angle in a horizontal direction perpendicular to the longitudinal direction of the magazine, which is opposed to each other so as to slidably grip the magazine. A separate application is currently being filed for a magazine stocker which is provided with adjustment means for adjusting the distance between the opposing guide angles and means for adjusting the distance between the opposed guide angles.

FIG. 8 shows an embodiment of the magazine stocker of the prior application, and is a partially cutaway plan view schematically drawn.

1 by fixing the brackets 7 and 7' to the stationary member 6.
A moving base 9 supports a pair of rails 8 in the X-axis direction.
is slidably supported in the X-axis direction. In FIG. 8, for convenience of reading, the cross-sections of the members fixed to the stationary member are marked with cross hatching. Among the structural members depicted in this figure, a stationary member 6,
The brackets 7, 7' and the rail 8 are members that do not move with respect to the floor surface on which the IC handler is installed.

In this Fig. 8, the movable base 9 is broken into three parts, the central part M is removed, and the right end part R in the figure is
The onboard equipment described below is schematically depicted. Although not shown in the left end L of the figure, the same equipment as in the R section described above is mounted and is configured symmetrically.

Three pairs of L-shaped cross-section guide angles 10a, 1
0b and each pair of guide angles 10a, 1
0b facing each other and magazine (shown by imaginary line) 2
hold it in place. Guide angle 1 is shown in Figure 8 of this book.
Horizontal sections of 0a and 10b appear. These guide angles 10a, 10b are Z
It stands upright in the axial direction (perpendicular to the plane of the paper in FIG. 8).

A pair of connecting rods 11a and 11b are formed and arranged in alignment with each other in the X-axis direction, and the three guide angles 10a are fixed to the connecting rod 11a,
Three guide angles 10b are fixed to the connecting rod 11b.

A connecting rod driving section 12 is constructed and installed on the moving base 9, and configured to move the pair of connecting rods 11a and 11b in the X-axis direction. The movement in the X-axis direction (i.e., position adjustment) is performed by moving base 9
This is done based on the standard.

On the other hand, a base driving means 13 is provided between the bracket 7, which is a stationary member, and a driving section 12 installed and fixed on the movable base, so that the movable base 9 can be moved in the X-axis direction.

When the connecting rod drive unit 12 is operated to move the position of the pair of connecting rods 11a and 11b in the X-axis direction, the guide angles 10a and 10a fixed thereto are moved.
10b's interval W ₁ changes all at once. This results in
The above-mentioned interval W ₁ can be adjusted to fit loosely with respect to the width w of the magazine 3. Even if this adjustment is performed, the interval dimension W ₂ between the three magazines 3 does not change.

Although not shown, the above-mentioned guide angles 10a, 10b and the connecting rod 1 are attached to the left end L of the movable base 9.
1a, 11b, the connecting rod drive section 12, and the base drive means 13 are installed symmetrically with respect to the right end R.

The three U shown in FIG. 8 schematically represent the transport equipment that transfers ICs to the magazine 3, and the interval dimension W ₃ is the above-mentioned dimension W ₂
(It is not mounted on the movable base 9).

IC between the above transport equipment U and magazine 3
When transferring ICs, the IC transport line _U1 may shift in the X direction for the reason explained with reference to FIG. However, the amount of deviation is the same for the three transport devices U, and the interval dimension W ₃ does not change.

If the three transport lines u ₁ shift in the X-axis direction (without changing the interval W ₃ ) due to a change in the IC format size, the width dimension of the magazine 3 will change due to a change in the IC format size. w also changes.

Therefore, by operating the connecting rod drive unit 12, the guide angle interval _W1 is adjusted so as to have an appropriate clearance with respect to the width dimension w of the magazine, and at the same time, by operating the base drive unit 13, 9 in the X-axis direction, and align the center line of the supported magazine 3 with the IC transport line _u1 . In this case, the above-mentioned interval dimension
Since W ₃ and W ₂ are constant and equal, alignment can be performed quickly and easily.

As explained above, the magazine stocker of the prior application can quickly and easily adapt to changes in the width of the magazine due to changes in the format and dimensions of the IC to be transported. , it is possible to quickly and easily adapt to shifts in the conveyor line due to changes in dimensions.

[Problem that the invention attempts to solve]

As a result of continuing practical tests and further improvement research regarding the magazine stocker of the earlier application, the present inventor discovered that there is room for improvement as described below.

That is, in the magazine stocker of the earlier application (Fig. 8), when the width dimension w of the handled magazine 3 changes, () the guide column width W ₁ is adjusted accordingly, and () the X-axis direction of the moving base 9 is adjusted. , and the position adjustment must be performed respectively, so there is a possibility that human error may occur.

The purpose of the present invention is to further improve the magazine stocker according to the earlier application, and (a) to adjust the feeling of the opposingly supported guide columns to adapt to the width dimension of the magazine; Move the moving base to align the center line of the guide column (more specifically, the center line in the width direction of the magazine guided by the guide column)
To provide a magazine stocker which can be linked with an operation for adjusting the magazine in the widthwise direction with respect to a shoot rail, and can be adjusted more quickly and without the risk of malfunction.

[Means for solving problems]

In order to achieve the above object, the present invention is based on the magazine stocker of the earlier application, that is, movable bases supporting guide angles that are opposed to each other so as to slidably hold the magazine, at right angles to the longitudinal direction of the magazine. (a) The means for adjusting the distance between the guide angles is provided with adjusting means for reciprocating in the horizontal direction, and means for adjusting the interval between the guide angles supported oppositely. (b) the means for reciprocating the movable base is (a) rotatable with respect to the movable base; , and a rotating shaft attached to the rotating shaft to lock relative movement in the axial direction; (b) spring means for biasing the rotating shaft in the axial direction; and (c) a rotating shaft attached to the rotating shaft. It comprises a flange-shaped rotating plate, (d) a plurality of stopper legs of different lengths planted on the rotating plate, and (e) a stopper abutting member fixed to the stationary base. (c) The cam member fixed to the rotating plate and the cam follower attached to one of the opposing guide angles are brought into opposing sliding contact.

[Effect]

With the above configuration, the means a for adjusting the interval between the guide angles and the means b for reciprocating the movable base are interlocked via the cam/cam follower means c.
When the guide angle interval is adjusted, the widthwise position of the magazine guided by the guide angles is automatically adjusted, leaving no room for human error.

〔Example〕

FIG. 1 shows one embodiment of the present invention, in which a moving base 9, guide angles 10a, 10b, and connecting rods 11a, 1 are given the same drawing reference numbers as in FIG.
1b are similar members corresponding to the constituent members in the installation of the earlier application (FIG. 8).

The cross-hatched bracket 17 is a stationary member, and is an improved member by applying the present invention to the bracket 7 of the device of the earlier application (FIG. 8).

A lever 21 is constructed, the center of which is pivotally supported on a movable base 9 by a shaft 21a, and rollers 21c that fit into U-shaped grooves 21b provided at both ends of the lever 21 are attached to connecting rods 11a and 11b, respectively. As a result, as the lever 21 is tilted, the two connecting rods 11a and 11b are moved in opposite directions in the Y-axis direction, and the opposing guide angle 1
The interval dimension between 0a and 10b changes.

The drive shaft 22 is a bearing 2 installed on the moving base 9.
3 so as to be rotatable about the Y-axis and prevented from sliding in the Y-axis direction.

The spring 24 is connected via the bearing 23 mentioned above.
The movable base 9 and the drive shaft 22 are urged to the left in the figure.

A rotating plate 25 is fixed to the drive shaft 22 in the form of a flange. A plurality of stopper legs 26a, 26e having different lengths are installed on the rotating plate 25.

In the illustrated state, the stopper leg 26e is brought into contact with the bracket 17 by the biasing force of the spring 24, thereby restricting the leftward movement of the movable base 9. The stopper leg 26a, which is longer than the stopper leg 26e, is inserted into a relief hole 17a provided in the bracket 17 and does not hinder the movement of the movable base 9.

FIG. 2 shows the stopper legs 26a, 26b, 26.
It is an explanatory diagram of the action of c~.

These stopper legs are installed along the circumference around the drive shaft 24, and have a structure in which they can rotate together with the drive shaft 24. The bracket 17 is a member that also functions as a stopper that comes into contact with the stopper leg. Then, the drive shaft 24
Escape holes 17a are arranged in a row along an arc centered at and facing the stopper leg.

The stopper leg that performs the stopper function in the illustrated state is the stopper leg 26a that directly faces the location where there is no escape hole 17a. A protrusion 26 _a-1 is provided at the tip of the stopper leg, and the bracket 17
It fits into the engagement hole 17b provided in the hole 17b, and performs a positioning function.

The S portion around the engagement hole 17b functions as a seat for a stopper.

Stopper legs (for example, 26c, 26e) that are longer than the above-mentioned stopper leg 26a are inserted into the relief hole 17a. As a result, the stopper legs (26a, 26
b, any one of ~) to the stopper seat S (second
The position of the movable base 9 in the Y-axis direction can be determined by arranging the movable base 9 to face the movable base 9 in the Y-axis direction.

Further, a cam protrusion 27 having a threaded cam surface is provided on the rotary plate, and a cam follower roller 28 is attached to the connecting rod 11a and brought into contact with the cam protrusion 27.

The spring 29 applies the above contact force.

The magazine stocker (first
In Fig. 2, hold the rotating plate 25 in your hand and pull it slightly to the right, turn it so that the desired stopper leg is directly facing the stopper contact surface, and then release your hand. The position in the Y-axis direction is determined. In the above operation, since the rotating plate 25 is rotated, the height h of the cam protrusion 27 changes, and the positions of the connecting rod 11a and the guide angle 10a in the Y-axis direction change. This change is transmitted to the guide angle 10b via the lever 21, and the distance between the guide angles 10a and 10b is determined.

In this way, by simply rotating the rotating plate 25, the pair of guide angles 10a, 10
The interval dimension b and the centerline position of the magazine guided by the pair of guide angles are adjusted in conjunction with each other.

When implementing the present invention, for example, if the model name of the IC is marked on the circumference of the side of the rotary plate 25 facing the operator, it will be possible to avoid misunderstandings regarding the relationship between the width dimension of the magazine and the center line position. There is no risk of adjusting the ivy,
It is possible to quickly, easily and accurately respond to changes in IC model dimensions.

[Effect of idea]

As described above in detail, the magazine stocker of the present invention can quickly and easily adapt to changes in magazine dimensions due to changes in IC model dimensions, and there is no risk of erroneous operation.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view of one embodiment of the present invention. FIG. 2 is a partially cutaway perspective view of the above embodiment. Fig. 3 is an explanatory diagram of the magazine, Fig. 4 is a schematic explanatory diagram of the magazine stocker,
Fig. 5 is a perspective view of the shoot rail, Fig. 6 is an explanatory view of the E-shaped cross-sectional shoot rail, Fig. 7 is an explanatory view of the magazine stocker of the prototype, and Fig. 8 is a partially cutaway view of the magazine stocker of the earlier application. FIG. 10a, 10b...Guide angle, 11a,
11b...Connecting rod, 21...Lever, 21a...
Pivot shaft, 21b...U-shaped groove, 21c...roller,
22... Drive shaft, 23... Bearing, 25... Rotating plate, 26a to 26e... Stopper leg, 27... Cam protrusion, 28... Cam follower.

Claims (1)

[Scope of Claim for Utility Model Registration] Adjustment means for reciprocating movable bases supporting a guide angle and facing each other so as to slidably hold a magazine in a horizontal direction perpendicular to the longitudinal direction of the magazine; In a magazine stocker provided with a means for adjusting the interval between guide angles supported oppositely, (a) the means for adjusting the interval between the guide angles is a central part of a lever connecting the opposite guide angles to each end; (b) means for reciprocating the movable base; (b) means capable of rotating with respect to the movable base and locking relative movement in the axial direction; (b) a spring means for biasing the rotating shaft in the axial direction; (c) a flange-shaped rotating plate attached to the rotating shaft; and (d) the above-mentioned rotating shaft. It is equipped with a plurality of stopper legs of different lengths planted on a rotating plate, (e) a stopper abutting member fixed to a stationary base, and (c) the above-mentioned rotation. A magazine stocker characterized in that a cam member fixed to a plate and a cam follower attached to one of the opposing guide angles are brought into opposing sliding contact.