JPS6221607A - Transfer device using lever-like member performing rectangular motion - Google Patents

Abstract

PURPOSE:To simplify the constitution of a device for intermittently transferring ICs with rectagular motion by providing cam followers respectively on levers for vertical motion and reciprocation to be driven with phase difference by a single cam. CONSTITUTION:A cam follower 9a of a forward and backward moving lever 9 and a cam follower 10a of a vertically moving lever 10 slidably contact a cam 8 with 90 deg. phase difference and the other end cam followers 9b, 10b of respective levers 9, 10 bear against a receiving seat 5a of a connecting rod 5 and a reciving seat 7a of a slide shaft 7 respectively. Thus, said lever 9 is swung by the rotation of the cam 8 to reciprocate a feed rod 3 in the direction X through the cam follower 9a and the receiving seat 5a. And the lever 10 swings with 90 deg. phase difference, and the feed rod 3 reciprocates in the direction Z by the reciprocation of the slide shaft 7 and the swing of the lever 14. By such constitution can be simplified the constitution and adjustment of this device.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention provides a rod-shaped member provided between a pair of parallel rails that combines reciprocating motion parallel to the rails and reciprocating motion perpendicular to the rails. This invention relates to a device that intermittently transports a large number of ICs placed on the rail by performing a rectangular movement.

[Background of the invention]

This type of conveyance device is widely used in processing, inspection, packaging, etc. when ICs are industrially produced.

FIG. 4 is a perspective view showing an example of this type of conveyance device.

A large number of ICIs are placed on a pair of parallel rails 2a and 2b and are intermittently conveyed in the direction of arrow A.

In order to carry out the above-mentioned conveyance, the pair of rails 2a.

The feed rod 3 provided between the arrows a, b, c
Move it in a rectangular shape as shown in d.

K, which drives the above-mentioned feed rod 3 in a rectangular shape, has the following effects on the feed rod 3: (1) reciprocating motion perpendicular to the rail as shown by arrows a and c, and (II) rail movement as shown by arrows a and d. must be alternated with reciprocating motion parallel to the

For this reason, conventionally, reciprocating drive means in the directions of arrows a and c and reciprocating drive means in the directions of arrows a and d are provided.
A structure that performs rectangular motion of b, c, and d is used.

However, such a conventional configuration has the technical problem that two drive systems must be provided and rectangular motion cannot be achieved unless the timings of both drive systems are matched. For this reason, conventional conveying devices using rectangular-moving feed rods have a complicated structure, are difficult to adjust, and have the drawbacks of being large, heavy, and expensive.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a conveying device with a simple structure that can cause a feed rod to move in a rectangular manner using a single cam.

A single cam allows for parallel and perpendicular to the rail.
Since it performs different types of reciprocating motion, there is naturally no need to adjust the timing between the two, and it can be expected to be compact, lightweight, and easy to maintain, and can also contribute to reducing manufacturing costs. It is.

[Summary of the invention]

In order to achieve the above object, the conveyance device of the present invention comprises two levers each provided with a cam follower, and
A total of two cam followers provided on the book lever are brought into sliding contact with a single cam with a phase difference, and one of the two levers causes the rod-shaped member to reciprocate in parallel with the rail. The present invention is characterized in that the other one of the two levers is configured to cause the rod-shaped member to reciprocate perpendicular to the rail.

[Embodiments of the invention]

Next, one embodiment of the conveying device of the present invention will be described with reference to FIGS. 1 to 3.

FIG. 3 is a partially cutaway perspective view schematically drawn to explain the structural function of this embodiment, and the shapes and dimensional ratios of the constituent members are not necessarily the same as those of the embodiment.

3 is the aforementioned feed rod, which is provided with a feed claw 3a, and is indicated by the arrow a.
, b, c, and d are driven in a rectangular shape to perform the feeding function.

For convenience of explanation, three orthogonal axes X, Y, and Z are set as shown in the figure. The X axis is a horizontal axis parallel to the rails 2a, 2b (Fig. 4), and the Z axis is a vertical axis. Said arrow a.

C is a reciprocating motion in the Z-axis direction, and arrows s and d are reciprocating motions in the X-axis direction. This FIG. 3 is an extracted depiction of the support structure portion of the feed rod 3.

A plurality of bearing blocks 4 are provided and arranged in the X-axis direction, and each bearing block 4 is fixed to each other by a connecting rod 5. The connecting rod 5 is supported by a bearing 6 so as to be slidable in the X-axis direction.

Each bearing block 4 is provided with a bearing 4x in the X-axis direction and a bearing 4z in the Z-axis direction.

On the other hand, a support shaft 3b is fixed to the lower surface of the feed rod 3, and is supported slidably in the Z-axis direction (vertical direction) by the bearing 4z.

As a result, the feed rod 3 is supported so as to be able to move up and down.
When the connecting rod 5 reciprocates in the X-axis direction, the feed rod 3 also reciprocates in the X-axis direction (that is, reciprocates in the directions of arrows s and d).

The slide shaft 7 is supported by the bearing 4x of the bearing block 4 so as to be slidable in the X-axis direction.

FIG. 1 is an explanatory diagram schematically depicting a vertical cross section including the connecting rod 5, and FIG. 2 is an explanatory diagram schematically depicting a vertical cross section including the slide shaft 7.

The cam 8 shown in FIGS. 1 and 2 is a single piece.

FIG. 1 shows a mechanism in which the feed rod 3 is reciprocated in the X-axis direction (that is, in the direction of the arrow d) by the cam 8 described above.

Furthermore, FIG. 2 shows a mechanism for reciprocating the feed rod 3 in the Z-axis direction (in other words, in the directions of arrows a and c) using the same cam 8 (not the same shape, but a single one) as described above. be.

The lever 9 for forward and backward movement as shown in FIG. 1 and the lever 10 for up and down movement as shown in FIG. IO is tiltably supported by the same lever shaft 11.

The forward/reverse lever 9 is provided with a cam follower 9a and a transmission row 29b. The cam follower 9a slides on the cam 8, and the transmission roller 9b abuts on the seat 5a provided on the connecting rod 5. Reference numeral 12 denotes a spring that urges the connecting rod 5 to the right in the figure.

As a result, when the cam 8 rotates to the left in the figure, the lever 9 for forward and backward movement is pushed and moved, and the connecting rod 5 and the bearing block 4
is driven back and forth in the X-axis direction.

The vertical movement lever lO is configured in an L-shape, and a cam 7 follower 10a and a transmission roller 10b are provided at the tips of two arms, respectively.

The cam follower 10a is brought into sliding contact with the cam 8. Here, if the cam followers 9a and 10a have a phase difference of 90 degrees with respect to the cam 8, they are brought into sliding contact. This results in %2
The book levers 9 and 10 are rotated back and forth with a phase difference of 90°.

The transmission roller 10b is brought into contact with a seat 7a provided on the slide shaft 7. A spring 13 biases the slide shaft 7 to the left in the figure.

As a result, when the cam 8 rotates to the left in the figure, the slide shaft 7 is reciprocated in the X-axis direction.

A cam 7b is integrally connected to the slide shaft 7 so that the feed rod 3 is reciprocated in the Z-axis direction by the reciprocating motion of the slide shaft 7 in the X-axis direction, and a cam 7b is pushed by the cam 7b. A lever 14 that rotates back and forth is provided. 14a is a lever shaft.

When the slide shaft 7 slides to the right in the figure, the cam 7b rotates the lever 14 clockwise in the figure, and the lever 14 pushes up the feed rod 3.

When the slide shaft 7 slides to the left in the figure, the cam 7b allows the lever 14 to rotate counterclockwise, and the feed rod 3 descends under its own weight.

As mentioned above, since the cam followers 9a and 10a are in sliding contact with the cam 8 with a phase difference of 90',
The reciprocation of the feed rod 3 in the X-axis direction and the reciprocation in the Z-axis direction are performed alternately for each stroke. Specifically, the lowering operation shown by arrow a, the returning operation shown by arrow C, the raising operation shown by arrow C, and the feeding operation shown by arrow d are performed accurately in this order. As described above, this operating order is determined by the phase difference between the cam followers 9a and 10a, so there is no need for adjustment and there is no possibility of it going out of order.

Furthermore, as is clear from the above-mentioned structural functions, in the device of this embodiment, both the forward and backward movement and the vertical movement of the feed rod 3 are driven by one cam 8. The transmission mechanism of the stopper is simple.

[Effects of the Invention] As described in detail above, the conveyance device of the present invention has a simple configuration because it can cause the feed rod to move in a rectangular manner using a single cam. Furthermore, since the single cam unit performs two types of reciprocating motion: parallel to the rail and perpendicular to the rail, there is no need to adjust the timing between the two, and it is small.

It has the advantage of being lightweight and easy to maintain.

[Brief explanation of the drawing]

FIGS. 1 and 2 are schematic diagrams each depicting a cross section taken along a different vertical plane in one embodiment of the present invention. FIG. 3 is a perspective view of the support structure portion of the feed rod in the above embodiment. FIG. 4 is an explanatory diagram of the operation of a conveying device using a rod-like member that moves in a rectangular manner. l-・-r-cs 2a, 2b...-rail, 3...
・Feeding rod, 3a...Feeding claw, 3b...Support shaft, 4
...Bearing block, 4X. 4z...Bearing, 5...Connecting rod, 5a...Socket,
6...Bearing, 7...Slide shaft, 7a...Catch seat,
7b...Cam, 8...Cam, 9...Lever for forward and backward movement, 9a...Cam follower, 9b...Transmission roller, 10...Lever for vertical movement, 10a...Cam follower, 10b... ...Transmission roller, 11...Lever shaft,
12.13...Spring, 14...Lever.

Claims (1)

[Claims] A rod-shaped member provided between a pair of parallel rails is caused to perform a rectangular motion consisting of a combination of reciprocating motion parallel to the rails and reciprocating motion perpendicular to the rails, In a device for intermittently transporting ICs, two levers are each provided with a cam follower, and a total of two cam followers provided on the two levers have a phase difference with respect to a single cam. one of the two levers causes the rod-shaped member to reciprocate parallel to the rail, and the other one of the two levers 1. A conveyance device using a rod-like member that moves in a rectangular manner, characterized in that the rod-like member is configured to perform reciprocating motion perpendicular to a rail.