JPS5966200A - Conveying device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

The present invention relates to a conveying device for transporting an object by dropping it onto a surface, and more particularly, to a conveying device suitable for application to an IC handler used in the t\fVcs conductor manufacturing process. Generally, in the manufacturing process of semiconductor devices (hereinafter referred to as ICs) such as integrated circuits and large-scale integrated circuits,
IC handler? It is sometimes used to test atmospheric characteristics. As a conventional C handler of this type, the one shown in FIG. 1 has been proposed. In Figure 1, IC
The handler is equipped with a loader section 1, a measurement section 2, and an unloader section 3, and the loader section 1 and the unloader section 3 are equipped with 5 chutes for sliding down the 104' (H) dead weight of the transported object. The IC 4 is substantially composed of a conveying device.
After being measured by the measuring section 2, the sample slides down from the measuring section 2 through the five chutes of the unloader section 3, and is transported and discharged. However, since the work 04 slides down the slope 5 under its own weight, there is a problem that the following object will violently collide with the preceding object, causing damage. This problem is particularly noticeable in ceramic packaged ICs. Therefore, in the above-mentioned construction C]), in order to completely eliminate such problems, a brake device 6 is provided to brake the self-weight slippage of (1) on the chute. This brake device 16, as shown in FIGS. 1 and 2,
Above the chute 5, a disc-shaped braking member 7 with 8 pins is mounted eccentrically and rotatably supported on the jute 5. A braking member 7 mechanically contacts the upper surface of the workpiece C4 that has slid down, thereby performing braking 7. However, such a brake device has a braking member purple I.
Since braking is performed by contacting C, the braking member and IC (!
: It is extremely difficult to set up the relationship to secure the docking tray, and the IC may be damaged by collision due to insufficient braking, or the IC may stop midway due to excessive braking, resulting in a blockage. The disadvantage was that it lacked stability, such as when the number 9 was generated. Is the purpose of the present invention to overcome these drawbacks? Conveying device f that can be used to transport the conveyed object in one piece at any time.

[Offering information] Hereinafter, the embodiments of the present invention shown in the seventh drawing will be explained. FIG. 3 shows an embodiment of the present invention applied to 2xc)
FIG. 3 is a schematic side view shown in case C; In this embodiment, the braking unit mlO is composed of an electromagnet, which is a row of biasing means, that biases the workpiece C4, which is an object to be conveyed, and slides down the inclined chute 5i in a non-contact manner. The ceremony is crowded. That is, as shown in FIGS. 3 and 4, the braking device 10 includes an iron core 11 having a substantially open shape and a coil 12 wound around the iron core 11. Next 9! It is installed across the lead of iAk C4. This braking device】0
A plurality of them are arranged at appropriate intervals along the chute 5. In other words, on the chute 5 of the loader section 1, they are arranged at coarse intervals at the top and closely spaced at the bottom, and on the slope 5 of the unloader section 3, they are arranged at equal intervals. bl. Further, the current supply to the coil 12 of each braking device 10 can be adjusted individually. It is assumed that the leads of the IC4 are made of a magnetic material such as iron (4270). Next, the effect will be explained. When IC4 slides down under its own weight with the coil 12 energized, M! The magnetic force that attracts the reed is energized in a direction almost perpendicular to the direction of the sliding direction. Due to this urging force, engineering C4 is iD! 1.The braking force of each filj moving device 10 is the current value to the coil 12? It is easily controlled by adding or subtracting, for example, IC4
are lined up near measuring part z, the better braking part #
It is preferable to increase the braking force of L10 sequentially. Note that the magnetic force, which is a braking force, is not limited to being applied to the IC leads, but may be applied to any magnetic part of the object to be transported. In this implementation (+1lVc), since braking is performed by magnetic force, there is no mechanical contact between the braking member and the IC as shown in Figures 1 and 2, and there is a risk of damage to the IC. Furthermore, since the braking force can be controlled very easily and to a high degree by adjusting the current, there is no possibility that the braking device will cause an I/O or accidental stop jam.
This can reduce the setup time for adjusting the braking force when cutting a carefully delivered item. Since stable braking is ensured in this way, the inclination angle r of the chute can be set to a large value, which reduces the transport time. It can be shortened. In the above embodiment, the braking device is constructed with an electromagnet. However, the braking device can also be constructed with a fluid pressure device such as a vacuum suction device (1 liter is a fluid spraying device, etc., and in this case, a magnetic material? It can also be applied to objects that are not carried. Furthermore, the present invention is applicable not only to industrial C handlers but also to general conveyance devices that convey objects by sliding down a chute. As described above, according to the present invention, objects to be transported can be transported in a constant state.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a conventional column, FIG. 2 is an enlarged sectional view taken along line 0n-n in FIG. 1, FIG. 3 is a side view showing an embodiment of the present invention, and FIG. IV of
- O in an enlarged cross-sectional view along line IV 1...Loader section, 2...Measurement section, 3...Unloader section, 4...IC (object to be transported), 5...Chute,
10...braking device, 11...iron core, 12...coil. Agent Patent Attorney Bo 1) Li Xin \Ni 1 No. 11'4 No. 2 Figure 7' -497- Figure 3 No. 4 1: si /σ

Claims (1)

[Scope of Claims] (2) In the conveying device fft which conveys the conveyed object r by sliding it under its own weight onto an inclined chute, a force is applied in a direction substantially opposite to the conveyed object which is sliding down under its own weight without contacting the conveyed object. A braking device for energizing is installed on the chute. 2. The conveying device according to claim 1, wherein the braking device is composed of an electromagnet.