JPS63134161A - Random charging machine - Google Patents

Abstract

PURPOSE:To make the charging position change of a charged work simple and positive, by installing each projecting body in moving bodies installed at both sides of a feed roller, and controlling a movement of these moving bodies toward a roller shaft to make possible for both interlocking and independent movements with rack, pinion and clutch devices. CONSTITUTION:Moving bodies 12 and 13 are installed at both undersides of a feed roller, and projecting bodies 15 and 16 are installed so as to be projected to the top between rollers. These moving bodies 12 and 13 are shiftable toward a roller shaft center by each of cylinders 17 and 18. This movement is transmitted to racks 19 and 20 tightly attached to these moving bodies 12 and 13, and each pinion engaged with respective racks is rotated. These pinions are installed in top and bottom of a shaft 22, and the pinion 23 on one side and the pinion on the other are made free of engagement and disengagement by an electromagnetic clutch. A movement toward the roller shaft center of these projecting bodies 15 and 16 is made alterable to plural types by each drive of these cylinders 17 and 18 and engagement or disengagement of the clutch, thus a projecting position change of a charged work can be done easily and positively.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a random loading machine that sequentially switches the loading position of a plurality of types of objects to be loaded.

(Prior Art and its Problems) For example, when placing a printed circuit board into the buff roll of a polishing machine, if it is always placed at a certain level at the neck, only a certain part of the buff roll will be used, which will shorten the life of the buff roll. Therefore, it is desirable to set a plurality of input positions for input objects such as printed circuit boards in the width direction, and to sequentially switch the input positions and input the input objects.

A random loading machine is a device that achieves this purpose, but conventional random loading machines use a robot with a Cartesian coordinate system attached to a vacuum suction device, and the material to be loaded is sucked up by the vacuum suction device. Therefore, it is very expensive, and if the object to be transported is a printed circuit board, it may not be possible to adsorb it due to the size and position of the hole.

(Means for Solving the Problems) In order to solve the above problems, the random loading machine of the present invention has a number of rollers for transporting the loaded materials, and rollers parallel to each other along the arrangement direction of these rollers. a first and a second moving body; a plurality of first and second protruding bodies that protrude from the first and second moving bodies between the rollers and can abut against the side surface of the input object; The first and second moving bodies are moved separately in the axial direction of the roller.
a drive device, first and second racks separately fixed to the first and second movable bodies, and first and second racks that mesh with the first and second racks, respectively. and the first pinion is fitted and fixed to the outer circumferential surface, and the second
a rotating shaft on which a pinion rotatably fits on the outer peripheral surface; a clutch device that connects the rotating shaft and the second pinion in a separable manner; the first and second driving devices; a control device that controls the clutch device to sequentially change the position of the object on the roller in a plurality of types in the roller axial direction using the first and second protrusions; This device is characterized by a configuration in which the input position is sequentially changed.

(Operation) When the first drive device is operated, the first protruding body moves in the roller axis direction together with the first moving body.

When the second drive device is operated, the second protruding body moves in the roller axis direction together with the second moving body.

Then, when the clutch device is connected, the first pinion and second
The pinion rotates together with the rotating shaft, so when one moving body moves, power is transmitted to the other moving body via the rack and pinion, and the other moving body moves as one moves. Move in the opposite direction of your body. The control device controls the timing of the operation of the first and second drive devices and the clutch device to sequentially switch the position at which the first protruding body and the second protruding body sandwich the input material on the roller. . As a result, the input position of the input object changes sequentially.

(Example of Fruit Eggplant) Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 7.

Figure 1 is a front view of a random loading machine according to an embodiment of the present invention, Figure 2 is a side view of the same, Figure 3 is a plan view of the main part of the random loading hall, and Figure 4 is a side view of the same. be. Figures 1 to 4
In the figure, 1 is a side plate erected on both sides of the pedestal 2.
At the upper ends of these side plates 1, both ends of a plurality of rotating shafts 3 are rotatably supported. Rollers 4 are fitted onto the outer peripheral surface of each of these rotating shafts 3, and these rollers 4 are arranged parallel to each other along the horizontal direction.

These rollers 4 are for conveying the input material 5 in the six directions of the arrows, and a sprocket 6 is fitted and fixed to the outer peripheral surface of one end of each of the rotating shafts 3.

These sprockets 6 and a sprocket 8 fixed to the output shaft of an electric motor 7 installed on the pedestal 2 are engaged with an endless chain 9, and the roller 4 is connected to the electric motor VJ.
It is rotationally driven in a fixed direction by m7 and conveys the input object 5 in the six directions of arrows.

Both ends of a pair of guides 10 located below the row 54 are fixed to the both side plates 1, and these guide shafts 10 are arranged parallel to the roller 4. A housing 11 is fixed to the central part of the guide @ 10 in the axial direction and extends across both guide wheels 10, and a first moving body 12 and a second moving body 13 are arranged with the housing 11 in between. ing. These movable bodies 12 and 13 are slidably supported at both ends by the guide ring 10 via linear bearings 14, and on the upper surfaces of these movable bodies 12 and 13 are first and second protruding bodies. A plurality of 15 and 16 are separately provided in a protruding manner. These protruding bodies 15 and 16 protrude upward from the upper ends of the rollers from between adjacent rollers of the plurality of rollers 4, and can come into contact with the side surface of the object to be thrown 5.

The cylinder rod ends of the first and second cylinder devices 17 and 18, which are fixed to the housing 11, are separately fixed to the movable body 12.13, and
and one end of the second rack 19, 20 are fixed separately. These racks 19 and 20 are parallel to each other and are arranged at regular intervals with teeth facing each other, but their positions in the height direction are different, and one end of the second rack 20 is connected to the bracket 21. the second mobile body 13 via
is fixed to.

A rotator @ 22 is rotatably attached to the housing 11 along the vertical direction, and a first pinion 23 that meshes with the first rack 19 is mounted on the outer peripheral surface of the upper end of the rotary shaft 22. Fitted and fixed. A second pinion 24 that engages with the second rack 20 is rotatably fitted on the lower outer peripheral surface of the rotating shaft 22, and an electromagnetic clutch 25 is installed below the second pinion 24. . This electromagnetic clutch 25 has a locking pin 26 attached to the housing 11.
The second pinion 24 and the rotating shaft 22 are connected to each other by being energized.

A sensor 27 for detecting the input object 5 is arranged near the roller of the rollers 4 located at the end in the conveying direction of the input object 5. This sensor 27 is composed of a photoelectric switch, and is attached to the pedestal 2 via a bracket 28.

FIG. 5 is a circuit diagram of the air system of the cylinder device 17.18, in which 29 is an air source, 30 is a filter regulator, 31 is a regulator, 32.33 is a solenoid valve, 34.3
5 is a silencer, and 36° and 37 are speed controllers.

FIG. 6 is a circuit block diagram of the control system of the random feeding machine, and 38 is a control circuit with a built-in timer circuit 39.
A signal from the sensor 27 is input, and the solenoid valve 3
2.33, a control signal is output to the electromagnetic clutch 25 and the electric motor 7.

Next, the effect will be explained. When the input object 5 is supplied to the random input machine and conveyed on the rollers 4 in the conveying direction shown by the arrow A, and the sensor 27 detects the input object 5, a detection signal is output from the sensor 27 to the control circuit 38. , the position of the input object 5 cannot be controlled. That is, the control circuit 38 is
The following five types of control patterns are sequentially and repeatedly executed.

First, in the first pattern, a control signal is output to the solenoid valve 32 to retract the piston rod of the first cylinder device 17. At this time, the electromagnetic clutch 25 is not energized and is kept off. As a result, the first moving body 12 moves to the right in FIG. 3, and the input object 5 is pushed to the right in FIG. do. As a result, the input object 5 is positioned at the right end of the roll width of the roller 4, as shown by 5a in FIG.

After positioning, extend the piston rod of the first cylinder assembly @17.

In the second pattern, a control signal is first output to the solenoid valve 32 to retract the piston rod of the first cylinder device 17. As a result, the input object 5 is pushed by the first protrusion 15 and moves to the right. After time t1 measured by the timer circuit 39, a control signal is output to the electromagnetic clutch 25 and the electromagnetic valve 33 to turn on the electromagnetic clutch 25 and retract the piston rod of the second cylinder device 18. When the electromagnetic clutch 25 is turned on, the first pinion 23 and the second throat nion 24 rotate together with the rotating shaft 22, so that the first moving body 12 and the second moving body 13 move at the same speed in opposite directions. Moving. That is, the first protrusion 1
5 moves to the right, and at the same speed the second protrusion 13
moves to the left and pinches the input object 5. As a result,
As shown by 5b in FIG. 7, the input object 5 is positioned to the left by Ll compared to the case of the first pattern. After positioning, the piston ronds of the first and second cylinder units @17 and 18 are extended.

The third pattern includes the electromagnetic clutch 25 and the electromagnetic valve 32.
33, and turns on the electromagnetic clutch 25, as well as the first and second cylinder devices! ! 17. Retract the piston rond of 18.

As a result, the first and second movable bodies 12.13 move at the same speed in opposite directions, that is, the first protrusion 15 moves to the right.
Further, the second protruding body 16 moves to the left to sandwich the input object 5. As a result, as shown by 5C in FIG. 7, the loaded material 5 is positioned at the center of the roll width. This position is L2 to the left than in the second pattern. After positioning, the first and second cylinder devices 17.18
Extend the piston rod.

In the fourth pattern, a control signal is first output to the solenoid valve 33, and the piston 0 of the second cylinder device 18 is retracted. As a result, the second movable body 13 moves to the left, and the input object 5 is pushed by the second protrusion 16 and moves to the left.

After time t1 measured by the timer circuit 39, a control signal is output to the electromagnetic clutch 25 and the electromagnetic valve 32, and 'I? The magnetic hoe clutch 25 is turned on and the piston rod of the first cylinder device 17 is retracted. As a result, the first moving body 12 and the second moving body 13 move at the same speed in opposite directions, that is, the first protruding body 15 moves to the right.
Further, the second protruding body 16 moves to the left and pinches the input object 5. As a result, the input object 5 is positioned to the left by L2 compared to the case of the third pattern, as shown by 5d in FIG.

After positioning, the piston rods of the first and second cylinder devices 17 and 18 are extended.

The fifth pattern outputs a control signal to the solenoid valve 33 to retract the piston rod of the second cylinder device 18.

At this time, the electromagnetic clutch 25 is turned off. As a result, the second moving body 13 moves to the left, and the input object 5 is pushed by the second protrusion 16 and moves until it comes into contact with the first protrusion 15.

As a result, the input material 5 is positioned at the left end of the roll width, as shown by 5e in FIG. This is Ll to the left than in the fourth pattern.

After positioning, the piston rod of the second cylinder device 18 is extended.

The object 5 positioned in this manner is conveyed by the rollers 4 and is placed, for example, on a buff roll of a polishing machine. That is, assuming that a set of five objects 5 is to be thrown in, the five objects 5 are all thrown into the buff roll at different positions in the roll width direction.

In the end, every 6 pieces will be thrown in from the same position.

Note that during positioning, the roller 4 may be rotated or may be stopped.

<Another embodiment> In the above embodiment, the cylinder device 1 is used as the drive device.
7.18 was used, but an electric motor or the like may be used instead.

Further, in the above embodiment, the case of five types of control patterns has been described, but by increasing the number of settings of the timer circuit 39, the control patterns can be increased to white oil.

That is, the type of input position can be set freely.

(Effects of the Invention) As explained above, according to the present invention, the first and second movable bodies 12 and 13 are driven by the first and second drive devices, and the movable bodies 12 and 13 are protruded from each other. first and second
Since the projecting bodies 15 and 16 sandwich the input object 5 and position it, the configuration is extremely simple and extremely simple compared to the conventional Cartesian coordinate robot equipped with a vacuum suction device. It can be manufactured at a low cost, and at the same time, even if the input object 5 is a printed circuit board with holes, positioning is not impossible.

Furthermore, the first and second racks 19.20, the first and second pinions 23.24, the rotating shaft 22, and the clutch device make it possible to separate the first moving body 12 and the second moving body 13. When the first movable body 12 and the second movable body 13 move at the same time, they always move at the same speed, so even though it is an inexpensive device as described above, it is possible to perform accurate positioning. I can do it. Moreover, since the first pinion 23 and the second pinion 24 are fitted onto the rotating shaft 22 and the second pinion 24 and the rotating shaft 22 are coupled by a clutch device, the first pinion 23 and the second pinion 24 are The power transmission mechanism between the second pinion 24 and the second pinion 24 is simple, consisting of only the rotation @ 22 and a clutch device, and for this reason, it can be manufactured at low cost and the device can be made compact.

[Brief explanation of the drawing]

Fig. 1 is a front view of a random dosing machine according to an embodiment of the present invention, Fig. 2 is a side view of the same, Fig. 3 is a plan view of the main parts of the same random dosing machine, and Fig. 4 is a side view of the same. FIG. 5 is a circuit diagram of the air system of the cylinder device, FIG. 6 is a circuit block diagram of the control system, and FIG. 7 is a schematic diagram showing the types of positioning of the input object. 4... Roller, 5... Throwing object, 12... First moving body, 13... Second moving body, 15... First protruding body, 16... Second protrusions, 17...first cylinder device, 18...second cylinder device, 19...
First rack, 20... Second rack, 22... Rotating shaft, 23... First pinion, 24... Second pinion, 25... Electromagnetic clutch, 38... Control circuit patent applicant Uemura Kogyo Co., Ltd. @Figure 6

Claims (1)

[Claims] A plurality of rollers for conveying the input material, first and second movable bodies parallel to each other along the arrangement direction of these rollers, and a plurality of rollers that protrude between the rollers from the first and second movable bodies to convey the input material. a plurality of first and second protrusions each capable of abutting on a side surface of an object, and first and second driving devices that individually move the first and second movable bodies in the axial direction of the roller; , first and second racks that are separately fixed to the first and second moving bodies, first and second pinions that mesh with the first and second racks, respectively, and 1
a rotating shaft on which a pinion is fitted and fixed on an outer circumferential surface and the second pinion is rotatably fitted on the outer circumferential surface, and this rotating shaft and the second pinion are detachably connected. A clutch device, the first and second drive devices, and the clutch device are controlled to control the first and second protrusions to change the position of the input object on the roller into a plurality of types in the roller axial direction. 1. A random loading machine, comprising: a control device for sequentially changing the loading position of the input object;