JPS5923955B2 - loading unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a loading unit used for assembly, loading, unloading, etc.

Conventionally, loading units that use air as their driving source have very few units that can stop at intermediate or arbitrary positions because air is a compressible fluid. .

SUMMARY OF THE INVENTION An object of the present invention is to provide a loading unit that eliminates the drawbacks of the prior art described above, uses air as a driving source, and is capable of accurately stopping at any position.

That is, the present invention was invented to achieve the above-mentioned object.In a loading unit that moves in a straight line, an air cylinder that can be stopped at any position by a signal using a collection chuck is used, and a shaft is used as a mechanism to send a signal to the air cylinder. The device is characterized in that it is constructed with a dog guide that can set a dog in any position that operates in synchronization with the switch to turn the switch ON-OFF.

The present invention will be specifically described below with reference to embodiments shown in the drawings.

Figures 1 and 2 show an embodiment of the loading unit according to the present invention, which is composed of a vertical unit 1 and a front and rear unit 2, and operates in a gate-like manner, such as ascending, advancing, and descending. It is something that does.

Although these two units have the same mechanism and the same shape, the upper and lower units 1 are provided with supports 3 to increase their rigidity. In the vertical unit 1, a rod 5 of a vertical air cylinder 4 is fixed to a base 6, and the vertical air cylinder 4 attached to a box 7 moves the box 7 up and down. In the front and rear unit 2, a front and rear air cylinder 8, which is installed on the output shaft side and has a collection chuck that closes with air force and grips the output shaft, is attached to a box 9, and a rod 10 is connected to the operating section 11. The operating section 11 performs a gate-like operation by combining the underground unit 1 and the front and rear units 2, and an adapter (not shown) is attached to this section for work such as assembly, loading, and unloading. It is possible to use 3 and 4 show details of the front and rear units 2, which are formed in the same shape as the upper and lower units 1.

The front and rear unit 2 is broadly divided into a front and rear air cylinder 8 serving as a driving source, a box 9, and an operating section 11. The front and rear air cylinders 8 are connected to the operating section 11 via a joint 12 and a floating connector 13.
Two guide shafts 14 are attached to the operating part 11 in order to make accurate linear movement.
4 slides in a linear motion bearing 15 attached to box 9. Further, a stopper 16 is provided at the stroke end, and together with a positioning bolt 17 attached to the box 9, accurate positioning at the stroke end is performed. Further, the stopper 16 can be fixed at any position on the guide shaft 14, and the stroke can be changed. As the intermediate arbitrary position stopping mechanism, the front and rear air cylinders 8 receive a signal, and as shown in FIG. Since it has a mechanism that closes and grips the output shaft to stop it, a dog guide 20 is attached between the operating part 11 holding the guide shaft 14 and the guide block 18 to which a dog 19 that generates a signal is attached. Like the guide shaft 14, this dog guide 20 operates in synchronization with the front and rear air cylinders 8. The box 9 is provided with a micro switch 21 for detecting the dog 19 and transmitting a stop signal to the front and rear air cylinders 8. In addition, a micro switch 2 detects when the stop dog 19 approaches the micro switch 21 to reduce the shock when stopping.
2 is provided to reduce the speed before stopping. As shown in FIG. 4, two sets of dogs 19, dog guides 20, microswitches 21, and microswitches 22 are provided for forward movement and backward movement. In addition, a micro switch 23 is installed at the stroke end to determine whether the stroke is forward or backward, and the end dog 24 detects the end of each stroke, and then which micro switch for forward or backward should be operated. I'm letting you decide. Fifth
The figure shows an example of an operation timing chart for one cycle of the front and rear units 2.

This timing chart shows that in addition to stopping at each stroke end, there is one stop at an intermediate position. Figure 6 is an air piping circuit diagram of the front and rear units 2, and shows the solenoid valve 25.
In order to switch between forward and backward air for the front and rear air cylinders 8, the solenoid valve 26 receives a signal from the micro switch 21, supplies air, and closes the collector chuck 27 installed on the output shaft side of the front and rear cylinders 8. The output shaft is gripped by operating the front and rear cylinders 8, and the operation of the front and rear cylinders 8 is stopped.

The solenoid valve 28 is used for deceleration, and when the solenoid valve 28 is open, the exhaust air comes out from here and the operating speed is high.When the solenoid valve 28 receives a signal from the micro switch 22, the solenoid valve 28 closes and the air is discharged. Since it flows through the speed controller 29, it is decelerated. In addition, the upper and lower units 1 and the front and rear units 2
should have the same mechanism and shape, and the stroke of the air cylinder, the length of the guide shaft 14, and the dog guide 20 may be selected depending on the target work.

The air piping circuit is the same for both the upper and lower units 1 and the front and rear units 2. As explained above, the present invention uses an air cylinder that can be stopped at any position by an external signal using a collector chuck that grips the output shaft in a unit that moves in a straight line using a shaft as a guide, and as a mechanism for sending a signal to the air cylinder. It is composed of a dog guide that operates in synchronization with the shaft and can set the dog at any position to turn the switch 0N-0FF, so it can be used for assembly, loading, unloading, etc., and can be easily moved to any intermediate position at several locations depending on the work. It is possible to decelerate and stop accurately through precise control, and since the driving source is air, it is relatively easy to handle and control.

In addition, according to the present invention, since the upper and lower units and the front and rear units have the same mechanism and the same shape, it is possible to design only one unit, and it can be freely connected and separated, making it suitable for various types of work. It has the effect of being easily adaptable to a suitable shape and providing versatility. Furthermore, there is an effect that the trajectory of the mouth shape required in normal assembly work can be taken.

[Brief explanation of drawings]

1 and 2 are side and front views showing one embodiment of the loading unit according to the invention, and FIG. 3 is a detailed view showing the front and rear units of the loading unit according to the invention. Fig. 4 is a cross-sectional view taken along the line A-A in Fig. 3, Fig. 5 is a diagram showing an operation timing chart showing the operating status of the front and rear units, and Fig. 6 is an air piping circuit diagram common to the upper and lower units and the front and rear units. be. Explanation of symbols: 1...Vertical unit, 2...Front and rear units, 4...Vertical air cylinder, 7...Box, 8...
...Front and rear air cylinders, 9...Boxes,
11... Operating unit, 14... Guide shaft, 18... Guide block, 19...
...Dog, 20...゜゜Dog guide, 21, 22,
23...Micro switch.

Claims (1)

[Scope of Claims] 1. A box is provided, an air cylinder, and a guide member for guiding the box to relatively move in a straight line and reciprocate;
An operating part is provided with a dog guide to which a dog can be attached in an adjustable manner, and a collet chuck for gripping and stopping the output shaft of the air cylinder is provided at the output part of the air cylinder, and the output shaft of the air cylinder is fixed to the output part of the air cylinder. a deceleration switch connected to the box and engaged with the dog to decelerate the air cylinder with a deceleration solenoid valve; and a deceleration switch that engages with the dog and closes the collet chuck with a stop solenoid valve. Attach a stop switch to the above box that is actuated to grip the output shaft of the air cylinder and stop it, and by setting the position of the dog, the box can be moved linearly back and forth relative to the operating part and stopped at any position. A loading unit characterized in that it is configured to 2. A first box is provided, a first air cylinder, a first guide member that guides the first box to move in a relatively straight line and reciprocate, and a dog guide to which the first dog can be attached in an adjustable manner. A first operating unit with a
a second box of a loading unit having a second operating part to which a second guide member for guiding the box to make relative linear reciprocating motion and a dog guide to which a second dog can be attached adjustably; The first box that is not attached to the base is attached so that the directions of rectilinear reciprocating motion are perpendicular to each other, and each air cylinder is connected to the output section of the first air cylinder and the output section of the second air cylinder. A first collet chuck and a second collet chuck for gripping and stopping the output shaft are provided, each of the output shafts of the air cylinder is connected to the first box and the second box, and the first dog and a deceleration switch that engages with each of the second dogs to decelerate each of the air cylinders by a deceleration solenoid valve, and a stop solenoid that engages with each of the first and second dogs. A stop switch is attached to each of the first box and the second box to operate the collet chuck to close each of the collet chucks by means of a valve to grip and stop each of the output shafts of the air cylinder, A loading unit characterized in that the second operating section is moved in two axial directions within a two-dimensional plane and stopped at an arbitrary position by setting the positions of the dog and the second dog.