JPH0317722B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a component supply device using a self-weight sliding method using an inclined surface.

In the assembly work of semiconductor devices, it is essential to have a mechanism for sequentially feeding chip parts and packaged parts such as various semiconductor elements, integrated circuit elements, and various passive parts to the working position.The feeding methods include trays, parts feeders, etc. In addition to the vibration method used, there is a method in which the material is slid down a sloped surface with a guide under its own weight and is sequentially supplied to the working position from inside the case.

However, in the case of such a conventional parts feeding device using the self-weight sliding method, since the feeding method uses only the dead weight and the inclination angle of the slope, it is necessary to set a large inclination angle to ensure that the parts are fed reliably. . Therefore, an impact is applied to the supplied part when it lands on the flat surface from the inclined surface. On the other hand, since the supply parts are made of ceramic or resin mold, they are susceptible to impact, and in such cases, there is a problem that the supply parts are often damaged. Japanese Unexamined Patent Application Publication No. 1973-1999 is intended to solve such problems.
There is an invention disclosed in Publication No. 60448. This invention lowers the falling speed of small parts by generating a gas flow in the opposite direction to the falling direction of the small parts, and uses a fixed nozzle to generate the gas flow.
As a result, it is not possible to adjust the blowing direction, air volume, and wind speed, making it difficult to achieve the desired falling speed, and the falling speed may not be sufficiently reduced to achieve the purpose, or the falling speed may be significantly reduced to stop small parts from falling. There is a risk of it getting lost.

SUMMARY OF THE INVENTION An object of the present invention is to provide a component supply device that reliably protects supplied components from damage by making it possible to adjust the direction, volume, and speed of air that is blown onto the supplied components.

This invention relates to a parts supply device which is equipped with an air nozzle which is provided with an inclined surface on which the parts slide down by their own weight and whose air outlet is disposed above the landing point of the supply section toward the inclined surface. The air nozzle moves relative to the outer periphery of the inner cylinder and adjustably overlaps the outer cylinder, and holes are formed on the circumferences of the inner cylinder and the outer cylinder so that they can overlap each other. This is a characteristic parts supply device.

The present invention will be explained below based on the drawings. FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1, and FIG. 3 is a cross-sectional view taken along line B-B in FIG.
FIG. First, the structure will be described. It has an inclined surface 4 connected to the lower end of a case 2 in which a supply part 1 is stored and has a guide 3. The lower end of the inclined surface 4 is connected to the flat surface 6. As shown in the figure, the flat surface 6 has a guide 5 into which the pusher 7, which can move horizontally, enters by making a hole 4' in the member of the inclined surface 4 through which the pusher 7 moves in the direction of the arrow. Guides 3 and 5 are consecutive. The pusher 7 is connected to a drive source such as a solenoid (not shown) so as to reciprocate on the flat surface 6. A stopper 8 is fixed to the end of the flat surface 6. A known escapement mechanism 9 is installed which includes gate bars 16 and 17 that move in and out of the inclined surface 4 alternately at the same time. That is, when the gate bar 16 rises diagonally to the upper left while holding down the second supply part 1 with the gate bar 17, the first supply part 1 slides down by its own weight, and then when the gate bar 16 descends and the gate bar 17 rises, the second supply part 1 slides down. The supply part 1 slides down and is stopped by the gate bar 16. The third and subsequent supply parts 1 come out of the case 2 and collide with the second supply part 1 in succession. The same operation is repeated thereafter.

An air nozzle 11 is arranged above the landing point 10. The air outlet of the air nozzle 11 is located on the inclined surface 4.
suitable for

FIG. 4 is an enlarged side view taken along the line CC in FIG. 1. The air nozzle 11 includes an inner cylinder 13 having a head closed at one end and an outer cylinder 12 so as to be rotatable.
2 is sandwiched between two mounting plates 19 at both ends thereof, and is fixed by being tightened between it and the head 13' of the inner cylinder 13 using a tightening nut 18. A joint 2 connected to the tube 14 and having an air supply port 20 is provided at one end of the inner cylinder 13.
1 is screwed in, and compressed air 1 is always inside the inner cylinder 13.
5 enters. Small holes 22 and 23 are arranged in the axial direction of the outer cylinder 12 and inner cylinder 13, and when the outer cylinder 12 is rotated, the small holes 2
2 and 23 can be alternated in the circumferential direction.

The supplied parts 1 continuously supplied from the case 2 are intermittently moved to the inclined surface 4 by the escapement mechanism 9.
sent to the bottom. The supplied part 1 accelerates down the slope 4 due to its own weight and reaches the landing point 10, but it is resisted by the compressed air 15 blown from the air nozzle 11 above the landing point 10, and the sliding speed decreases, causing it to flatten. Softly adheres to surface 6. Thereafter, the pusher 7 moves to the left, so that the supplied part 1 is delivered to the stopper 8 position and positioned. The air nozzle 11 is configured by loosening the tightening nut 18 and rotating the outer cylinder 12 to slightly shift the mounting angle of the inner and outer cylinders 12 and 13, thereby altering the small holes 22 and 23 to adjust the blowing direction and flow rate of the compressed air 15. can be adjusted. The compressed air 15 may be blown only when the component passes.

5 and 6 are side sectional views showing the operation of the air nozzle 11. FIG. When the small hole 23 of the outer cylinder and the small hole 22 of the inner cylinder coincide, the air outlet of the air nozzle 11 is widest and the blowing air is weak. If the outer cylinder 12 is now rotated counterclockwise, it will become as shown in Fig. 5, and the blowing air will rotate upwards and close to the small hole 2 of the inner cylinder.
2. The overlapping of the small holes 23 in the outer cylinder is reduced, the area of the outlet is reduced, and the speed of the outlet air is increased. Moreover, the blowing direction is rotated to the side facing the supply part 1 sliding down the inclined surface 4. When the outer cylinder 12 is further rotated, it becomes as shown in Fig. 6, and the overlap between the small hole 22 in the inner cylinder and the small hole 23 in the outer cylinder is further reduced, and the area of the outlet is further reduced, so the speed of the blowing air becomes even stronger. Become. At the same time, the blowing direction is further rotated to the side facing the supply part 1 sliding down the inclined surface 4. As a result, in addition to changing the pressure of the compressed air 15, the speed and direction of the air blowing from the air nozzle 11 can be changed, so the braking force on the supply part 1 can be varied over a wide range, and an optimal traversing effect can be achieved across the supply part. This is suitable because it can be carried out.

As explained above, the present invention places the air nozzle horizontally with respect to the moving direction of the supplied part, moves the air nozzle relative to the outer periphery of the inner cylinder, adjustably overlaps the outer cylinder, and overlaps the inner cylinder and the air nozzle. The parts supply device is characterized by having holes that can be overlapped each other on the circumference of the outer cylinder, so that the blowing direction and air volume of compressed air can be adjusted according to the parts to be supplied, and the supply is easy to damage. It is possible to securely and stably attach the parts from the inclined surface to the flat surface and protect them from damage.

Furthermore, even if the supplied parts are changed, the new supplied parts can be easily adapted to by simply moving the outer cylinder.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of an embodiment of the component supply device according to the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG.
The figure is a sectional view taken along line B-B in figure 1, and figure 4 is a cross-sectional view taken along line C in figure 1.
-C enlarged sectional view, FIGS. 5 and 6 are side sectional views showing the action of the air nozzle. 1...supply parts, 2...case, 3...guidance,
4... Inclined surface, 4'... Hole, 5... Guide, 6...
Flat surface, 7... Pushsha, 8... Stoppa, 9
... Escapement mechanism, 10 ... Landing point, 1
1... Air nozzle, 12... Outer cylinder, 13... Inner cylinder, 14... Tube, 15... Compressed air, 1
6, 17...Gate bar, 18...Tightening nut, 19...Mounting plate, 20...Air supply port, 21
...Joint, 22, 23...Small hole.

Claims (1)

[Claims] 1. In a parts supply device that is equipped with an inclined surface on which parts slide down under their own weight and is equipped with an air nozzle above the landing point of the supply section with an outlet facing the inclined surface, the air nozzle is placed horizontally with respect to the direction of movement of the supplied parts. The air nozzle moves relative to the outer periphery of the inner cylinder to adjustably overlap the outer cylinders, and holes are formed on the circumferences of the inner cylinder and the outer cylinder so that they can overlap each other. parts supply device.