JPS641370B2 - - Google Patents

Description

[Detailed Description of the Invention] A. Purpose of the Invention Industrial Application Field The present invention is applied to a vibrating parts feeder that aligns and conveys minute parts such as chip-shaped electronic parts.
This invention relates to a high-speed front-back alignment device for parts, which allows parts to pass through as they are if they are in the normal direction, and reverses them if they are in the opposite direction so that the front and back sides of the parts are aligned.

BACKGROUND TECHNOLOGY Vibratory parts feeders are widely used for aligning and conveying various parts that are distinguished by shape, material, size, etc., and have recently been used to transport chips with a side of 2 m/m or less, such as chip capacitors, chip resistors, and chip diodes. In order to automate the process of assembling electronic components, it is greatly useful for aligning and transporting these electronic components.

By the way, when assembling the above-mentioned electronic components onto a printed circuit board, it is necessary to separate the mounting side (hereinafter referred to as the back side) and the opposite side (hereinafter referred to as the front side). Because both sides are mixed and conveyed in alignment,
It is necessary to align the front and back sides of the parts by reversing the parts that have been turned over.

Therefore, the present applicant filed Japanese Patent Application No. 58-201811 (Japanese Unexamined Patent Publication No. 60-94185) dated October 28, 1982.
In this paper, we have proposed a high-speed component alignment device that can align the front and back sides of components at high speed. This high-speed front-back alignment device for parts will be explained with reference to FIG. 2 as follows.

In Fig. 2, 1 is a component whose front and back alignment is to be performed using this device, such as a chip-shaped electronic component, and 2 is a trough of a vibrating parts feeder.
Although not shown in the drawings, a vibration with an amplitude suitable for transporting the component 1 is applied by a vibrator including, for example, an electromagnetic vibrator. Reference numeral 3 designates a component conveyance track provided on the trough 2. A conveyance path 3a having a V-shaped cross section is provided on the upper surface of the component conveyance track 3, and a surface 3a' along which the component 1 is conveyed along the conveyance groove 3a. An air injection hole 3b is provided, and the air injection hole 3 is further provided with an air injection hole 3b.
A vertical air flow hole 3c communicating with the air flow hole 3c and a horizontal air flow hole 3d communicating with the air flow hole 3c are provided. Reference numeral 4 denotes an air introduction member provided on the side of the trough 2, which has an air introduction hole 4a opening downward and communicating with the air circulation hole 3d of the component transport truck 3. Reference numeral 5 denotes an air ejection pipe (not shown) which is connected to an air supply device such as an air compressor and constantly blows out air from the air supply device, and is opposed to the air introduction hole 4a of the air introduction member 4. Air injection holes 5a are provided that open upward. 6 is a shutter provided between the air introduction hole 4a of the air introduction member 4 and the air injection pipe 5a. This shutter 6 is fixed to the tip of a rod 7a of a voice coil type actuator (hereinafter referred to as V.C.A.) 7 with a set screw 6a.
It reciprocates in the lateral direction as the rod 7a advances and retreats. The V-C-A 7 is controlled by an output signal from a detector (not shown), which is composed of a photoelectric sensor or the like, for example, to determine whether the component 1 being conveyed along the conveyance groove 3a of the component conveyance truck 3 is front or back. Ru.

Next, the operation of this apparatus with the above configuration will be described for the case where the parts 1 are aligned face up.

First, when the component 1 is transported along the transport path 3a of the component transport truck 3 with its face up, the detector detects that the part 1 is facing up, and the V/C/A7 is not activated at all. First, part 1 passes through as is. Next, when the component 1 is transported face down along the transport path 3a of the component transport truck 3, the detector detects the face down of the component 1, and the output signal from the detector causes the V・C・A7
is activated to move the rod 7a of the V.C.A.7 to the right at high speed. Then, the shutter 6 attached to the rod 7a of the V.C.A.7 also moves rightward at high speed between the air introduction hole 4a of the air introduction member 4 and the air ejection hole 5a of the air ejection pipe 5, and this one The air ejected from the air ejection hole 5a of the air ejection pipe 5 is introduced into the air introduction hole 4a of the air introduction member 4 for a moment, and the air is introduced into the air introduction hole 4a of the air introduction member 4, and the air is introduced into the air flow hole 3d, 3 of the component transport truck 3.
The air flows through the air and is injected from the surface 3a' of the conveying path 3a through the small air injection hole 3f, and the air is used to transport the parts 1, which have been conveyed along the conveying path 3a along the surface 3a', to the surface 3a opposite to the surface 3a'. '' as shown by the two-dot chain line, and thereafter this part 1 is conveyed face up along the surface 3a''.

Then, when the component 1 is reversed, the signal from the detector is interrupted, so the shutter 6 immediately operates in the opposite direction to the above, returning to the state shown in FIG.

It should be noted that the parts 1 that are transported with each surface 3a', 3a'' of the transport path 3a facing up are corrected in the same posture near the discharge end of the parts transport truck 3 and then transported outside.

Problems to be Solved by the Invention The above-mentioned high-speed front-back alignment device for parts enables high-speed front-back alignment to a certain extent and has achieved its purpose, but recently, even faster front-back alignment is required.

(b) Means for Solving the Problems in the Structure of the Invention This invention provides a notch through which the upper part of the conveyed part passes in a part of one conveyance surface of the component conveyance path, opens the notch, and keeps the cavity open at all times. An air injection nozzle for ejecting air is movably provided, and when the parts are turned over, the nozzle is moved so that the air jet from the nozzle is sprayed onto the upper part of the transported parts.

Embodiment FIG. 1 is a longitudinal sectional view showing an embodiment of a high-speed front-back alignment device for parts according to the present invention.

In the figure, 10 is a component whose front and back sides are to be aligned, such as a chip-shaped electronic component;
0 is a trough of a vibrating parts feeder, and a window 21 is opened in a part of the side surface. Although not shown in the drawings, this trough 20 is given vibration with an amplitude suitable for conveying the component 10 by a vibrator, for example, an electromagnetic vibrator or the like. 30 is trough 2
A part conveying track fixedly installed on the top surface of the truck is provided with a conveying groove 31 having a V-shaped cross section on its upper surface, and is a part of the surface 31a along which the component 10 is conveyed along the conveying path 31. In addition, a notch 31c is provided so that the upper part of the transported component 10 passes through. Reference numeral 32 denotes a cavity formed between the trough 20 and the component transport track 30, the base of which communicates with the window 21 of the track 20, and the tip of the cavity 32 that communicates with the notch 31c of the transport path 31.
It is open to the outside. 40 is window 2 of trough 20
an actuator provided on the side opposite to 1;
For example, voice coil type actuator (hereinafter referred to as V・
(referred to as C.A) is controlled by an output signal from a detector (not shown) consisting of, for example, a photoelectric sensor, when it is desired to reverse the component 10 conveyed through the conveyance groove 31 of the component conveyance track 30. Rod 41
The robot moves forward and backward at high speed. A holder 50 is fixed to a rod 41 of a V.C.A40 with a set screw 51, and has an air introduction hole 53 opened downward in a sleeve 52 at the tip. Reference numeral 60 denotes an air circulation pipe whose base portion is fitted into the sleeve 52 of the holder 50, and has an inflow hole 61 opposite to the air introduction hole 53 of the holder 50. The air introduction hole 53 and the inflow hole 61 constitute an air introduction section 80 of the air circulation pipe 60. This air inflow pipe 60 has its tip connected to the window 21 of the trough 20 and the parts conveyance track 3.
0 into the cavity 32, and the conveyance path 31
It is curved so as to face the surface 31a, and an air injection nozzle 62 is attached to the tip of the curve. Reference numeral 70 denotes an air jet pipe (not shown) which is connected to an air supply device such as an air compressor and constantly jets air upward by the air supply device. It is set large enough to cover the range of movement. Therefore,
Air ejected from the air ejection tube 60 flows from the air introduction hole 53 of the holder 50 through the inflow hole 61 into the air distribution tube 60 through a minute gap, flows through the air distribution tube 60, and reaches the tip of the air distribution tube 60. Air injection nozzle 6
2, the liquid is constantly sprayed in the direction of the conveyance groove 31 of the component conveyance track 30.

Next, the operation of the high-speed front-back alignment device for parts according to the present invention with the above configuration will be described for the case where the parts 10 are aligned face-up. In the state shown in FIG. 1, the air injection nozzle 62 is in a normal position, and the air injected from the air injection nozzle 62 is injected toward the notch 31c of the conveyance path 31 of the component conveyance truck 30. However, the ejected air passes over the parts 10 being conveyed along the surface 31a.

First, when the component 10 is conveyed along the conveyance path 31 of the component conveyance truck 30 while facing up, the detector detects that the component 10 is facing upward, and as a result, the V.C.A. 40 does not operate at all. The component 10 is transported as is. Next, when the component 10 is conveyed face down along the conveyance path 31 of the component conveyance truck 30, the detector detects the face down of the component 10, and the output signal from the detector causes the V. The C.A.40 operates and moves the rod 41 of the V.C.A.40 to the right at high speed. Then,
The air distribution pipe 60 attached to the rod 41 of the V.C.A 40 via the holder 50 and the air injection nozzle 62 attached to the tip of the air distribution tube 60 also move to the right at high speed, and only for this moment. The air that has been injected from the air injection nozzle 62 is blown onto the upper part of the component 10 that has been conveyed over the notch 31c of the conveyance path 31 along the surface 31c, so that the component 10 faces the surface 31a of the conveyance path 31. Surface 31
It is reversed as shown by the two-dot chain line in b, and from now on, surface 3
1b and is conveyed face up.

Then, when the component 10 is reversed, the signal from the detector is interrupted, so the air flow pipe 60 and the air nozzle 62 attached to the front of the air flow pipe 60 immediately move in the opposite direction to the above. Return to the state shown in Figure 1.

C. Effects of the Invention This invention provides a notch in a part of one conveying surface of a parts conveying path and a part through which the upper part of the conveyed parts passes, and connects the base to an actuator, and the vibrating parts feeder. trough, as well as
An air injection nozzle at the tip of the air circulation pipe, which is installed through the track without contact with the truck, is positioned facing the outside of the above-mentioned notch, and an air introduction part provided in a part of the air circulation pipe is used to constantly blow out air. The air injection nozzle is positioned opposite to the air injection hole of the air injection pipe with a small gap, and the air injection nozzle is switched between the part above the notch and a position away from the part in the notch by an actuator. Therefore, it is possible to eliminate the time delay caused by the interruption of air as in the device of the prior application, which further improves responsiveness and enables high-speed front-back alignment. Furthermore, since the air injection nozzle is separated from the trough, even if the trough is vibrated with a large amplitude for high-speed conveyance, the air injection position is always constant, thereby eliminating malfunctions and achieving high reliability.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of a main part showing an embodiment of a high-speed front-back alignment device for parts according to the present invention, and FIG. 2 is a longitudinal cross-sectional view of a main part showing an embodiment of a high-speed front-back alignment device for parts that was previously filed by the present applicant. It is. 10... Parts, 20... Trough, 30... Parts conveyance truck, 31... Conveyance path, 32... Cavity,
40...Voice coil type actuator, 41...
...Rod, 50...Holder, 60...Air distribution pipe, 62...Air injection nozzle, 70...Air injection pipe.

Claims (1)

[Claims] 1. High-speed front and back of parts in which the front and back sides of the conveyed parts are determined on the V-shaped parts conveyance path of the vibrating parts feeder, and the conveyed parts in the opposite direction are reversed with a jet air flow to align the front and back sides. In the alignment device, a notch is provided in a part of one transport surface of the parts transport path and a part through which the upper part of the transported parts passes, the base is connected to the actuator, and the trough of the vibrating parts feeder, and The air injection nozzle at the tip of the air circulation pipe, which is installed through the track without contact with the truck, faces the outside of the notch, and the air introduction part provided in a part of the air circulation pipe,
The air injection nozzle of the air injection pipe that always blows out air is placed opposite to it with a small gap, and the air injection nozzle is moved by an actuator to a position where it is separated from the parts above the notch and the parts in the notch. A high-speed front-back alignment device for parts, characterized in that the parts are moved by switching between the front and back sides.