JP2534569B2 - Individual take-out device for plate-like work - Google Patents

Description

TECHNICAL FIELD The present invention relates to a device for individually taking out a plate-shaped work, for example, a lead frame.

BACKGROUND OF THE INVENTION A lead frame, which is a type of plate-like work, has a structure in which an element a such as a diode, a transistor, a capacitor, and a resistor is molded in the central portion, as shown in FIG. 4, for example.

The lead frame R is obtained through a molding process A during the manufacturing process of the electronic component shown in FIG. 5, and then undergoes a deflashing process B, a soldering process C, a trim forming process D, etc. to obtain a final product. It is said that

In this manufacturing process, since the lead frame R is knocked out and has a random posture in the molding process A, the alignment process E is interposed before the deflashing process B is performed, and the lead frame R is aligned in a fixed direction here. However, in order to surely perform this alignment work, the lead frames R are individually taken out in advance and individually taken out into the alignment step E one by one.
Need to go through.

The aligning process E and the preliminarily individual taking-out process F are also required between the soldering process C and the trim forming process D.

[Prior Art] Conventionally, the individual taking-out work of the lead frame R is performed manually.

[Problems to be Solved by the Invention] Conventionally, therefore, there are the following problems.

Manual work has low work efficiency.

The manual operation has a high operation cost due to soaring labor costs.

In order to solve this problem, the present applicants have previously proposed an individual take-out device (Japanese Patent Application No. 63-266816) for the lead frame that has been molded in the middle part of the electronic component.

As shown in FIG. 3, this is a work in which a carrier band 2 is movably provided along a lead frame upward carrier path 1, and the back surface of the lead frame R is received at appropriate intervals in the carrier direction on the front side of the carrier band 2. The receiving surface 4 and the work pressing surface 5 that pushes the rear edge are alternately arranged. The work pressing surface 5 is provided in the V-shaped work receiving groove 11, and the work sliding surface is a rearward and upward slope on the front side of the work pressing surface 5. By forming 13, the lead frame R is received in a rearwardly rising state over the work receiving surface 4 and the work pressing surface 5, overlaps with the front side of the lead frame R, and another lead which is to be conveyed together with the other lead. The frame R'is constructed so that it can be slid down by its own weight.

According to this individual take-out device, the individual take-out of the lead frame R can be automated, and the above-mentioned problem can be solved, but the following new problem arises.

For example, if there is a burr on the molded portion b of the lead frame R and this is hooked on another lead frame R ', the other lead frame R'may not slip off reliably, and the accuracy of the individual take-out work may be improved. May decrease.

An object of the present invention is to increase the work efficiency of the individual take-out work, to reduce the work cost of the work, and to improve the accuracy of the work.

[Means for Solving the Problems] In the present invention, for example, as shown in FIG. 1, a conveying belt 2 is provided so as to be movable along an upward conveying path 1 of a plate-like work, and a conveying direction on a front side of the conveying belt 2 is provided. A work receiving surface 4 that receives the back surface of the plate-shaped work 3 and a work pressing surface 5 that pushes the rear edge are alternately arranged at appropriate intervals, and a work suction-pushing device is provided in the back side space 6 of the plate-shaped work upward conveying path 1. 7 is provided, and the work suction part 8 of the work suction / pushing device 7 is configured to be able to be driven forwards and backwards from the back side space 6 of the plate-like work upward conveying path 1 to the front side space 10 by a pushing drive device 9 (see FIG. 2). In the advancing step of advancing from the back side space 6 to the front side space 10, the adsorbing section 8 adsorbs the plate-like work 3 received over the work receiving surface 4 and the work pressing surface 5 of the transfer belt 2 and then further advances. With the opposite The input process, which is constituted so as to leave place the plate workpiece 3 adsorbed to the work receiving surface 4 and the workpiece pushing surface 5.

The conveyor belt 2 may be a belt as shown in FIG. 1 or a chain.

The plate-shaped work R may be a lead frame as shown in FIG. 4 or another plate-shaped object.

The work pressing surface 5 may be formed on the surface of the claw 20 as shown in FIG. 1 or may be formed on the surface of the plate.

The work suction / pushing device 7 may move the work suction part 8 forward / backward by swinging the swing arm 23 as shown in FIG. May be operated to move back and forth.

As shown in FIG. 1, the work suction part 8 may be moved forward and backward by passing through an insertion opening 26 provided in the transport belt 2, or may be moved forward and backward by passing both sides of the transport belt 2. Good.

The suction means in the work suction portion 8 may be an air suction method as shown in FIG. 1 or a magnetic force suction method.

[Effect] The present invention has the following effects.

Since the individual take-out work of plate-like work can be automated,
Work efficiency is higher than manual work.

Since the individual take-out work of plate-like work can be automated,
The work cost can be reduced compared to manual work.

In the advancing process, one plate-shaped work received over the work receiving surface and the work pressing surface of the transfer zone is advanced to the front side space while adsorbing at the work adsorbing portion, and another plate-shaped work overlapping the front side is admitted. Make sure to drop it off, and in the process of retreating, the one plate-like work that has been adsorbed is left in its original state, so even if one plate-like work is caught by another plate-like work, another plate-like work is caught. The workpieces can be reliably removed, and only one plate-shaped workpiece can be reliably taken out one by one, which improves the accuracy of the individual taking-out work.

Since the work suction-pushing device need only have the advancing / retreating operation part and the suction operation part, it can be implemented with a relatively simple structure.

[Embodiment] An embodiment of the present invention will be described with reference to the drawings.

1 and 2 are views for explaining an individual take-out device for a plate-like work according to an embodiment of the present invention. FIG. 1 is a side view of the individual take-out device, and FIG. 2 is a lead incorporating the individual take-out device. It is a side view of a frame extraction alignment device.

In FIG. 2, reference numeral 14 indicates a lead frame R take-out and aligning device.

The pick-up and aligning device 14 sends the lead frame R, which has been loaded into the hopper 15 in a random posture, to the individual pick-up device 17 through the work supply / conveyance band 16, and the individual pick-up device 14
While individually taking out at 17, carry in the aligning device 18 one by one,
The aligning device 18 aligns in a fixed direction and carries out from the carry-out device 19.

As shown in FIG. 1, the individual take-out device 17 comprises a carrying device 12 and a work suction-pushing device 7.

The transfer device 12 is configured to transfer the transfer band 2 along the upward transfer path 1 of the plate-like work, and to receive the back surface of the lead frame R at a proper interval in the transfer direction on the front side of the transfer band 2 and the work receiving surface 4. By alternately arranging the work pressing surfaces 5 for pushing the rear edge, the lead frame R received over the work receiving surface 4 and the work pressing surface 5 can be conveyed upward by the movement of the conveying belt 2.

The work pushing surface 5 is a claw 20 attached to the surface of the conveyor belt 2.
Formed in the V-shaped work receiving groove 11 formed on the transport side of
By forming the work slip-down slope 13 which rises rearward on the front side of the work pushing surface 5, the lead frame R is received in the rear rising state across the work receiving surface 4 and the work pushing surface 5.
Another lead frame R ', which overlaps the front side of the lead frame R and is about to be transported together with the lead frame R, can be slid off by its own weight.

The work suction / pushing device 7 is provided in the back side space 6 of the plate-like work upward conveying path 1 and pushes out the work suction part 8 from the back side space 6 of the plate-like work upward conveying path 1 by a driving device 9 (see FIG. 2). The work suction part 8 is configured to be able to move back and forth to the front side space 10, and the work suction portion 8 is received over the work receiving surface 4 and the work pressing surface 5 of the conveyor belt 2 in the step of advancing from the back side space 6 to the front side space 10. Lead frame R
Is adsorbed and then further advanced, and in the opposite retreat step, the adsorbed lead frame R is left on the work receiving surface 4 and the work pressing surface 5.

That is, in the advancing process, the one lead frame R received over the work receiving surface 4 and the work pressing surface 5 of the conveyor belt 2 is adsorbed by the work adsorbing portion 8 while adhering to the surface space 10.
To another lead frame R'that overlaps the front side
Of the lead frame R that has been adsorbed is left in the original state during the retreat process.
Even if the other lead frame R ′ does not slide down on the front side of the work suction and push-out device 7 due to being caught by the burr of the work suction and push-out device 7,
By removing this, only one lead frame can be reliably taken out one by one, and the accuracy of the individual taking out work can be improved.

The structure of the work suction / extrusion device 7 will be described more specifically.

This work suction / pushing device 7 is provided with a work suction part 8 at the tip of a swing arm 23, an intake nozzle 24 at the end of the work suction part 8, and a push timing photo sensor 25 at the bottom of the work suction part 8 for conveyance. Adjacent claws on obi 2
Insertion port 26 through which the tip of the workpiece suction part 8 moves in and out
, The conveyor belt 2 is linked to a conveyor drive device (not shown), and the swing arm 23 is pushed out by a pusher drive device 9 (see FIG. 2).
The transport drive unit and the push-out drive unit 9 are configured to be linked to the photo sensor 25.

That is, based on the fact that the photo sensor 25 detects that the lead frame R has moved to the front side of the work suction / pushing device 7, the transport drive device is stopped for a predetermined time to bring the transport belt 2 into a stopped state, and the lead frame R Is stopped at the front side of the work suction and push-out device 7, and at the same time, the push-out drive device 9 is normally operated to swing the swing arm 23 to the front side, and the work suction part 8 is advanced from the back side space 6 to the front side space 10, After a lapse of time, the push-out driving device 9 is reversely actuated to swing the swinging arm 23 to the rear side, the work suction portion 8 is retracted from the front side space 10 to the back side space 6, and then the transfer driving device is restarted. By doing so, the transport belt 2 is re-interlocked, and thereafter, the same operation is continuously performed.

The intake nozzle 24 communicates with an intake device (not shown) via an intake passage 33 formed in the workpiece suction section 8.

As shown in FIG. 2, the aligning device 18 includes the lead frames R loaded one by one from the individual take-out device 17,
The standby gate 27 once receives and carries in the detection device 28, and the detection device 28 detects the direction and the number of the lead frames R, and the plurality of lead frames R. When it is detected that R'is carried in, the duplicate work removing device 29 is directed to the out-of-process 30 and a plurality of lead frames RR 'is out-of-process.
When it is detected that the number of the lead frames R is one, the duplicate work removing device 29 is directed to the front-facing device 31 and the lead frame R is sent to the front-facing device 31 and the lead-side device 31 reads the lead. After turning the frame R face up
It is configured such that the lead-in device 32 is carried in to the device 32, the lead frame R is directed forward by the frontward device 32, and then the device 19 is carried out in the frontward facing direction.

[Brief description of drawings]

1 and 2 are views for explaining an individual take-out device for a lead frame according to an embodiment of the present invention. FIG. 1 is a side view of the individual take-out device, and FIG. 2 is a lead frame incorporating the individual take-out device. FIG. 4 is a side view of the take-out alignment device, FIG. 3 is a view corresponding to FIG. 1 of the previously proposed example, and FIG. 4 is a view for explaining a lead frame used in the present invention, and FIG.
Is a front view of the lead frame, FIG. 4 (B) is a sectional view taken along the line BB of FIG. 4 (A), and FIG. 5 is an explanatory diagram of a process for manufacturing an electronic component. 1 ... Plate-like workpiece upward conveying path, 2 ... Conveying band, R ...
... Plate-shaped work (lead frame), 4 ... Work receiving surface,
5 ... Work pushing surface, 6 ... 1 back space, 7 ... Work suction and pushing device, 8 ... Work suction unit, 9 ... Pushing drive device, 10 ... 1 front side space.

Claims (1)

(57) [Claims] 1. A work receiving surface 4 which receives a back surface of a plate-like work R at an appropriate interval in a carrying direction on a front side of the carrying band 2 so that a carrying band 2 can be carried and moved along an upward carrying path 1 of the plate-like work. And the work pushing surface 5 for pushing the rear end edge are alternately arranged, and the work sucking and pushing device 7 is provided in the back side space 6 of the plate-like work upward conveying path 1, and the work sucking portion 8 of the work sucking and pushing device 7 is pushed and driven. In the device 9, the back side space 6 of the plate-like workpiece upward conveying path 1
From the back side space 6 to the front side space 10, the work suction part 8 is received over the work receiving surface 4 and the work pressing surface 5 of the conveyor belt 2 in the advancing step of advancing from the back side space 6 to the front side space 10. After adsorbing the plate-shaped work R present, it further advances, and in the opposite entry process,
An individual take-out device for a plate-like work, characterized in that the adsorbed plate-like work R is left on the work receiving surface 4 and the work pressing surface 5.