JPS6380549A - Automatic conveyor for lead frame - Google Patents

Abstract

PURPOSE:To prevent a lead frame from floating on rails thereby to be accurately positioned, thereby avoiding a trouble such as a break of a pilot pin during feeding by conveying the frame by the pin by rolling on rails while pressing the frame on the rails. CONSTITUTION:Cutouts 14, 14 are so formed on the tops of rails 12 that the edge of a lead frame 13 passing through a long slot 12a is exposed. Rollers 15, 16 are provided in the cutouts 14, 14. The frame 13 is placed on rails 11, 12 by a containing magazine 21. Then, the edge of the frame 13 is pressed by a predetermined force while rotating the rolling part 15a of the roller 14, the pilot pin 20a of a lead frame conveying jig 20 is inserted to the predetermined hole of the frame 13, positioned, and the frame 13 is conveyed to the other roller 15 in this state. Accordingly, it can be positioned by the pilot pin 20a, and prevent a trouble, such as the pin from breaking during feeding.

Description

DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION (Industrial Field of Application) The present invention relates to an automatic conveyance device for lead frames, and is particularly used in a handler device.

(Prior Art) Conventionally, as an automatic conveyance device for lead frames, one shown in FIG. 4, for example, is known.

1a and lb in the figure are transport rails, respectively.

A long groove (not shown) for passing the edge of the lead frame 2 is provided on the mutually opposing inner walls of the conveyor rails ia and 1b. A plurality of holes 2a... are provided,
Moreover, a plurality of ICs 3 . . . are attached to the lead frame 2. A lead frame transport jig 4 is arranged above the rails 1a, 1b, and a pilot bin 4a to be inserted into the hole 2a of the lead frame 2 is provided at the tip of the transport jig 4.

In an automatic conveyance device having such a structure, the lead frame 2 is inserted into a hole 2a of the frame 2 (not shown) from the loader side and positioned, and in this state the lead frame 2 is conveyed in the direction of arrow B.

However, according to the conventional automatic conveyance device, when the lead frame 2 is conveyed on the rails 1a and 1b, the lead frame 2 floats, which makes it impossible to accurately position the mushroom, resulting in movement trouble. Specifically, for example, the pilot bin 4 broke during the transfer.

(Problems to be Solved by the Invention) The present invention has been made in view of the above circumstances, and it prevents the lead frame from floating on the rail and performs accurate positioning, thereby preventing breakage of the pilot bottle during transfer. It is an object of the present invention to provide an automatic conveyance device for lead frames that can avoid troubles.

[Structure of the invention] (Means and effects for solving the problems) The present invention has been made in view of the above circumstances, and has a long groove in the side wall through which the edge of the lead frame passes. a conveyor rail having a notch in the upper part through which the edge of the lead frame is exposed; a roller that presses the lead frame from the notch of the rail; The gist of the invention is to include a pilot bin for positioning and transporting.

According to the present invention, by transporting the lead frame on the rail using a pilot bin while pressing it with a zero-rail, floating of the lead frame can be prevented, positioning can be performed accurately, and transfer troubles can be avoided.

(Example) An example of the present invention will be described below with reference to FIGS. 1 to 3. However, Fig. 1 is an explanatory diagram of the automatic lead frame conveying device according to the present invention, Fig. 2 is a diagram illustrating the pressing of the lead frame by the roll of the same device, and Fig. 3 is a diagram showing the main parts of the device. FIG.

Reference numerals 11 and 12 in the figure represent a pair of opposing rails. The opposing inner walls of these rails 11, 12 are provided with long grooves 11a, 12b, respectively, through which the edges of the lead frame 13 pass. A long groove 128 is provided in the upper part of the rail 12.
A notch 14° 14 is provided so that the edge of the lead frame 13 passing through it is exposed. These notches 14.1
4 are each provided with a roller 15,16.

One roller 15 is connected to the roller 1 via a spring 17.
It is fixed to the side wall of 1. The other roller 16 is fixed to a support member 19 on the side wall of the rail 11 via a spring 18. A lead frame transport jig 20 is arranged between these rows 515, 16. A pilot bottle 20 to be inserted into the positioning hole 13a of the edge of the lead frame 13 is provided at the tip of the conveyance jig 20.
A is provided. A storage magazine 21 for storing lead frames is provided on the roller side of the rails 11, 12. In the figure, 15a and 16a indicate roller portions of the rollers 15 and 16, respectively, 22 indicates bearings built into these roller portions, and 23 indicates an IC attached to the lead frame 13.

In an automatic conveyance device having such a structure, first, the lead frame 13 is placed on the rail 11.12 from the storage magazine 21. Next, while rotating the roller portion 15a of the roller 15 and pressing the edge of the lead frame 13 with a predetermined force, the pilot bin 20a of the lead frame transport jig 20 is inserted into a predetermined hole of the lead frame 13. In this state, the lead frame 13 is conveyed to the other roller 16 side. Subsequently, while rotating the roller portion 16a of the roller 16, the edge of the lead frame 13 is pressed with a predetermined force, and the lead frame 13 is conveyed in the direction of arrow C.

According to the above embodiment, a notch 14 is provided on one side of the opposing rails 11 and 11, and a roller 1 whose pressing force can be adjusted by a spring 17, 18 is provided in this notch 14.
5 and 16, when transporting the lead frame 13 on the rails 11 and 12,
It is possible to prevent the lead frame 13 from floating. Therefore, positioning using the pilot bin 20a can be performed accurately, and troubles during transportation such as breakage of the pilot bin can be prevented.

In the above embodiment, the case where two rails are provided is described, but the number is not limited to this, and even with one rail, for example, a certain effect can be expected.

[Effects of the Invention] As detailed above, the present invention provides a lead frame that prevents the lead frame from floating on the rail and allows accurate positioning, thereby avoiding troubles during transportation such as broken pilot pins. We can provide automatic conveyance equipment.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of an automatic lead frame conveying device according to an embodiment of the present invention, and FIG. 2 shows openings 11, 12, etc. of the device.
-Rail, 11a, 12a...Long groove, 13...Lead frame, 14...Notch, 15.16...Roller, 15a, 16a...Roller part, 17.18...
Spring, 20...Lead frame transport jig, 20
a...Pilot bin, 23...IC. Applicant's agent Patent attorney Takehiko Suzue Figure 3 Figure 4

Claims (1)

[Claims] A conveyance rail having a long groove in a side wall for the edge of the lead frame to pass through, and a notch in the upper part of the long groove through which the edge of the lead frame is exposed; 1. An automatic lead frame conveying device comprising: a roller that presses the lead frame; and a pilot pin that is inserted into a hole in the edge of the lead frame to position and convey the lead frame.