JPH03166114A - Stick accommodated components supplying device - Google Patents

Abstract

PURPOSE:To provide possibility of parallelly arranging a number of transport lines in a small space by sensing eventual presence of objects transported in a specified place of a stick accommodated parts supply device for chip type electronic components, and turning on/off the drive of a transport belt in conformity to the signal given therefrom. CONSTITUTION:A motor 8 is operated continuously, and a drive roller 14 is rotated through a belt 16. Parts in a stick 1 slip off one by one onto a transport belt 7 at a certain spacing and are transported to a certain position. A solenoid 20 is energized while a sensor 9 is not sensing any parts, and a follower roller 18 is put in pressure contact with the drive roller 14 through a lever 17 to allow the transport belt 7 to run in the X direction. When the sensor 9 senses parts, the solenoid 20 is deenergized, and the follower roller 18 separates from the drive roller 14 to cause the transport belt 7 to stop.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a stick storage component supply device that feeds a large number of chip-shaped electronic components stored in a cylindrical stick one by one to a take-out position.

[Conventional technology]

For example, chip-shaped electronic components (hereinafter referred to as "components") such as surface mount ICs (QFP, PLCC, MSP, etc.)
In some cases, these parts are stored side by side or stacked inside a cylindrical stick.

Conventionally, as a feeding device for such a stick storage component, one shown in FIG. 4 is known.

This device slides the components inside the stick 1 mounted tilting downward to the supply port 50a of a feed table 30 by its own weight, and vibrates the feed table 30 together with a vibration table 31 that supports it by a vibration device 32. The vibration causes the parts on the supply port 30a to be horizontally moved in a connected manner to the terminal end 50b of the feed table 30.

Then, the component that has reached the terminal end 30b is picked up by a suction bit 33 of a suction head 33 provided in a component conveyance device (not shown).
a, it is adsorbed at the outlet 50c and transported to, for example, a component mounting process.

Further, FIG. 5 shows another example of the conventional stick storage component supply device.

In this device, parts that have slipped out of the diagonally installed stick 1 due to their own weight are conveyed by a belt 3 installed between a pulley 2 and a pulley 8a of a rolling motor 8.
After being sandwiched between a roller 4 that is provided opposite to the pulley 2 and urged in the direction of the pulley 2 by a spring 10, and transferred one by one onto the pedestal 5 so as not to overlap. , it slides onto the conveyor belt 7 due to its own weight.

This conveyor belt 7 is moved by a pulley 6 which is rotated by the belt 3 mentioned above, but due to the difference in the rotation radius of the pulley 6, it is moved at a higher speed than the belt 3, and there are gaps between each part. A predetermined interval is provided. When the sensor 9 detects a component that has been sent to the end of a predetermined stroke on the conveyor belt 7, the moving motor 8 stops, and the component is picked up by a suction head as shown in FIG. 4 and transported to the next process. ．． [The invention attempts to solve the problem. g! [Problem] However, in such conventional stick storage component supply devices, the former is designed to align and convey components in a line without any gaps by tilting the stick 1 and vibration of the feed table 30. When the component to be transported is, for example, an IC chip, as shown in FIG. 6(a), a burr 101a protrudes from the rear end of the leading component 101 and a burr 102a protrudes from the front end of the trailing component 102. However, the same figure (
As shown in b), the parts overlapped vertically and interfered with each other, causing the preceding part to tilt, causing air leakage from the suction head, and making it impossible to remove the part.

In addition, due to the vibration of the preceding component 101 or the pressing force of the subsequent components 102, 103, etc. that slide inside the stick 1, the leading component 101 may stand up as shown in FIG. It may be pushed out from the stand 30. This becomes especially noticeable when the vibrating force is increased so that the parts at the rearmost position can be reliably fed.

Furthermore, since the parts are fed by their own weight, the feeding speed varies significantly depending on the number of parts present in the stick, and there are also problems in that the vibration changes and the feeding speed also changes depending on where the device is installed.

On the other hand, in the latter case, each component is separated and transported by the conveyor belt 1, so there are no problems caused by separation or changes in the supply speed, and the conveyor belt stops moving once the IC chip reaches a predetermined position. Therefore, the problem that occurs when using a vibration source does not occur, but the problem is that the life of the rotary motor is significantly shortened because the rotary motor is repeatedly stopped and started each time the component is transported to a predetermined position. ．． Furthermore, when this device is used in a machine equipped with electronic components, there are the following problems. In other words, the number of parts that must be mounted on a board usually reaches several hundred types at most, so the mounting machine is required to be able to mount a wide variety of parts. However, in a device like the one shown in Figure 5, it is necessary to provide a drive motor for each component supply line, so when a large number of these devices are installed in parallel, the distance between each conveyor belt may be reduced. cannot be made smaller than the opening motor, resulting in a significant disadvantage in space efficiency compared to the device shown in FIG.

Furthermore, since a large number of parking motors and their movement circuits are required, there is also the problem of high cost.

The present invention has been made in view of the above points, and an object of the present invention is to provide an inexpensive stick storage component supply device that can install a large number of conveyance lines in parallel in a narrow space. [Means for Solving the Problems] In order to achieve the above object, the present invention includes a detection means for detecting the presence or absence of a component at a predetermined position on a conveyor belt for conveying the component, and a detection means for detecting the presence or absence of a component at a predetermined position on a conveyor belt for conveying the component, and a detection means for detecting the presence or absence of a component at a predetermined position on a conveyor belt that conveys the component. A clutch means is provided for intermittent transmission of the removing force to the belt.

It is preferable to arrange a plurality of such conveyor belts in parallel on a common waste motion source.

[For production]

With the above configuration, when the component reaches a predetermined position, the detection means detects it, and the clutch means is put into a disconnected state, thereby cutting off the transmission of perturbing force to the waste belt.

Furthermore, if the component is not in the predetermined position, the clutch means is connected and active force is transmitted to the drive belt to convey the component to the predetermined position.

This makes it possible to intermittently open the conveyor belt while keeping the power source in continuous operation. Since the power source does not have to start and stop repeatedly, its lifespan can be significantly extended.

Furthermore, even if multiple conveyor belts are installed in parallel, they can be driven independently by a common oscillation source, so the spacing between each conveyor belt is not restricted by the size of the oscillation source. Therefore, space efficiency is greatly improved, and the parts supply device can be supplied at low cost.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 3 of the accompanying drawings, but parts corresponding to those in FIG.

FIG. 1 is a front view showing an embodiment of the present invention.

In the figure, a support stand 12.
13 is fixedly installed, a long cylindrical rolling roller 14 is rotatably installed on the support stand 12, and a pulley 15 is installed on the support stand 13.
is rotatably supported.

A pulley 14a is concentrically integrated with this moving roller 14, and a belt 16 is installed between the pulley 14a and a pulley 8a fixed to the rotating shaft of the fighting motor 8 to provide the drive source of the device. Constructed. Also, belt 3 is installed between pulley 15 and pulleys 2 and 6.
and the shaft 15. of the boley 15. The middle part of the lever 17 is rotatably supported, and a driven roller 18 is rotatably supported at the left end in the figure of the lever 17, and a pulley 18a is attached to the roller 18.
are provided integrally, and a belt 19 is installed between the pulleys 15 and 188.

Furthermore, a solenoid 20 is provided between the lever 17 and the base plate 11.
At the same time, the spring 21 is engaged to urge the lever 17 in the clockwise rotation direction as shown in the figure, and the lever 17 is rotated by the stopper 22.
The clockwise rotation limit of the roller is regulated so that the driven roller 18 is separated from the pseudo-driving roller 14 in this state. Then, by energizing the solenoid 20 from the illustrated state, the actuator 20a projects in the direction of arrow A, and the lever 17 is rotated to the left against the biasing force of the spring 21.
The driven roller 18 is rotated in the direction of arrow B, and the parked roller 14 is rotated.
These elements constitute a clutch means that connects and disconnects the rolling force between the drive motor 8 and the conveyor belt 7.

Fig. 2 is a plan view showing a part of the above device, and Fig. 3 is a block diagram showing the driving system of the above device. In these figures, parts corresponding to those in Fig. 1 are designated by the same reference numerals. The suffixes a to d of each reference numeral indicate different parts conveyance lines.

Further, in FIG. 3, reference numerals 23a to 2''5d are swing circuits for the solenoids 20a to 20d, reference numeral 24 is a motion circuit for the swing motor 8, and reference numeral 25 is an external power supply mainly supplied from a component mounting machine (not shown).

Note that although FIGS. 2 and 3 show four component transport lines, the number is not limited to this, and in many cases there are far more than this in Azusa-dori.

Next, the operation of the embodiment having such a structure will be explained.

In the parts supply state, power is constantly supplied to the opening motor 8 from the external power supply 25, the opening motor 8 continues to rotate continuously, and the rotational roller 14 is kept in a rotating state via the belt 16.

Now, when the parts that are being slid off the stick 1 one by one and conveyed at intervals on the conveyor belt 7 do not reach the predetermined position, the output signal from the sensor (for example, a light blocking sensor such as a photointerrupter) 9 is As a result, the solenoid 20 is energized via the active circuit 23, and the lever 17 rotates counterclockwise against the spring 21 to press the driven roller 18 against the driven roller 14.

As a result, the rotation of the thigh motion motor 8 is adjusted to the level l-16.
, the sliding roller 14, the driven roller 18, the belt 19, the pulley 15, and the belt 3, and the conveyor belt 7 is opened in the direction of the arrow X via the pulley 6 which is moved by the belt 3, and the parts transport it to the specified position. When the sensor 9, which is a detection means, detects this, the output signal causes the solenoid 20 to stop being energized via the trapping circuit 23.
When the solenoid 20 is de-energized, the lever 17 rotates to the right due to the biasing force of the spring 21 until it comes into contact with the stopper 22, and the driven roller 18 separates from the rotating roller 14, causing the conveyor belt 17 and the parts conveyed by it to rotate clockwise. Movement also stops and waits for transport to the next process. These operations can be performed for each component transport line individually, so a wide variety of parts can be freely selected and supplied, and the spacing between each transport line is not affected by the size of the drive motor. , it becomes possible to provide a large number of transport lines within a narrow space.

In addition, in the above embodiment, a solenoid was used as the power source of the clutch means that cuts on and off the power of the rotary motor.
This may be replaced with another actuator such as an air cylinder, and if the actuator has a built-in return spring, the spring 21 attached to the lever 17 is not needed.

Furthermore, although frictional transmission is used as the clutch means by pressure contact between the rotating roller 14 and the driven roller 18, gear transmission by a pair of gears approaching and separating may be used, and the folding force may be transmitted by a chain or gear transmission instead of a belt.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to intermittent the rotation of the conveyor belt while the waste power source continues to operate, thereby eliminating the strain caused by repeated starting and stopping, and extending the life of the drive source. It can be significantly extended. Furthermore, even if multiple conveyor belts are installed in parallel on a common drive source, the spacing between each conveyor belt is not restricted by the size of the opening source, which greatly improves space efficiency and allows multiple It becomes possible to reduce the size and weight of a component supply device having a conveyance line, and since only one active source is required, the device can be supplied at low cost.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is a plan view showing a part of the same, Fig. 3 is a block diagram showing its operating system, and Fig. 4 is a conventional stick storage. Figure 5 is a front view showing another example of a conventional stick storage parts supply apparatus; Figures 6(a), (b), and (c) are Figure 4; FIG. 6 is an explanatory diagram showing different examples of parts conveyance states by the illustrated apparatus. 1...Stick 3.38~'5d, IE3,19,198~19d...
・Belt 4...Roller 5...Base 7...Transportation belt 8...Rolling motor 9, 9a to 9d...Sensor 11...Substrate 14・
... Driving rollers 18.18a to 18d... Driven rollers 20.20a to
20d... Solenoid 21, 21. ~21d... Spring 22, 22. ~22d... Stopper 23, 25a~23d, 24... Intoxication circuit 25... External power supply

Claims (1)

[Scope of Claims] 1. A stick stored parts supply device that slides parts stored in a cylindrical stick down an inclined surface by its own weight and then sequentially supplies them to predetermined positions by a conveyor belt, comprising the steps of: A stick storage component supply device comprising: a detection means for detecting the presence or absence of a component; and a clutch means for intermittent transmission of driving force to the conveyor belt based on an output signal of the detection means. 2. The stick storage component supply device according to claim 1, wherein a plurality of conveyor belts are arranged in parallel on a common drive source.