JPS61165238A - Motion generator type transfer feeder - Google Patents

Abstract

PURPOSE:T provide a two-dimensional and three-dimensional feeder having an excellent high-speed characteristic or versatility by using a motion generator drive to be operated by a controlled DC servocontrol motor in place of a cam drive for the transfer feeder. CONSTITUTION:A prescribed timing and operation characteristic are inputted to a setter and control unit 3. The speed of the DC servocontrol motor 6 is controlled according to the set value, by which an output shaft 9 of a coaxial servocontrol actuator 8 is moved toward the left. Then the oil in cylinder chambers 14a 14b is admitted by a guide 13 and a piston 12 into a cylinder chamber 18 in the transfer feeder 1 by which a piston 16 is lifted and one of the two- or three-dimensional operations begins. The movement of the piston 16 and the shaft 9 is monitored and checked by sensors 17, 10 and is at the same time fed back to the motor 6. The oil in a cylinder chamber 19 flows into an accumulator 20 and a clamping operation is applied to a feed bar pawl by the movement of the piston 16. The motor 6 is run backward by the command from the unit 3 in the case of unclamping.

Description

DETAILED DESCRIPTION OF THE INVENTION (Related Industrial Field) The present invention relates to a motion generator type transfer feeder.

(Prior Art) Since the conventional 1~lance far feed device is of a cam drive type, the loaf length and timing of the 1~lance far feed are fixed.

Therefore, regardless of the number of people working on the work or the size of the work, the operation of the one-herrance fur feeder has been uniform.

This results in wasted conveyance operations, wasted mold material, and limits production speed, making it highly specialized.

Therefore, if it is possible to arbitrarily select and set the transfer operation (speed, feed pitch, lift time, clamp amount, each operation timing, operation characteristics J4r) according to the shape of the workpiece, productivity will be improved and mold costs reduced. It has become possible to ensure proper mold lubrication (11.7), and the general use of transfer feeders has been desired from the standpoint of effective utilization of equipment. or,
The conversion of equipment to a komba mill was also desired from the viewpoint of workability, maintainability, monitoring performance, etc.

(Problems to be Solved by the Invention) The present invention seeks to provide two-dimensional and three-dimensional transfer feeders that are high-speed and versatile and can meet the conventional demands.

(Specific Means Solved by the Invention) The setting device and controller 1 have a motion generator that operates a synchronized cylinder via a servo actuator equipped with a hydraulic power unit 1- driven by a DC servo motor controlled by a roll unit. It is comprised of two-dimensional and three-dimensional transfer feed devices that operate a transfer feeder by operating a screw 1 with hydraulic pressure generated by the motion generator. The apparatus is characterized in that it has a sensor that detects the movement of the piston and the output of the coaxial servo actuator, and that signals from each sensor are fed back to the setting device and control unit for control.

Embodiments of the Invention 1 is a 1-transfer feed device, in particular a motion generator-driven two-dimensional and three-dimensional transfer feed device (the two-dimensional and three-dimensional transfer feed devices are described in this application). People first applied for a special patent application in 1982.
53306, but the present invention further develops this.) 2 is a motion generator, l
- Communicated with transfer feed device 1 through pipes 5a and 5b. 3 is a setting device and controller 1 to control the rotation of the motion generator DC servo motor 6, and the motion generator 2
are electrically connected. 4 is a hydraulic power unit that supplies pressure oil to the coaxial servo actuator 8 in the motion generator 2, and is connected by a pressure supply pipe 22 and a tank return pipe 23.

The transfer feed device l includes a pair of cylinders 15.
15, and a piston 16 that reciprocates within the cylinder 15, and the amount of operation of the piston 16 can be detected by a sensor 17. Among the cylinder chambers 18 and 1.9 partitioned below 1 in the cylinder, one cylinder chamber 19 communicates with an accumulator 20 via a conduit 21. The other cylinder chamber 18 is connected to conduits 5a and 5b.

The motion generator 2 includes a DC servo motor 6, a coaxial servo motor connected to the servo motor through a coupling 7, a coaxial servo actuator 8 connected through the coupling 7, and an output shaft of the servo actuator 8. It consists of a broken tuning cylinder 1].

The basic operation of the coaxial servo actuator 8 is to convert the rotation of the DC servo motor 6 into linear motion using a ball screw, and generate axial movement and large force on the output shaft 9 via hydraulic pressure. The movement of the output 1llll19 and the rotation of the DC servo motor 6 are configured to be synchronized. This invention was previously disclosed in Japanese Patent Application No. 129374/1982, and the present invention is a further development of this invention)
.

synchronized cylinders]] LJ: l ~ transfer feeder] as many pistons 12. as the number of simultaneously operating cylinders 1.5.15. +2 is built in. piston 12
is slidably inserted into the tuning cylinder II.

A guide 13 is slidably inserted in the tuning cylinder 11 in the same way as the piston 12. The output 11+9 and the piston 12 are in contact with the guide 13 without any gap. 10 is a sensor that detects the amount of movement of the output shaft 9. Although FIG. 1 only shows the configuration of the clamp system of the motion generator 2, the lift system and advance system are also omitted because they have similar configurations.

Although the second embodiment has been explained using an l-transfer feed device as an example, the present invention can be applied to all kinds of handling devices.

(Operation of the invention) The operation of the clamp etc. will be explained below. Now, Figure 2,
The timing and operating characteristics shown in FIG. 3 are input to the setting device and control unit 3. The speed of the 1 DC servo motor 6 is controlled according to the set value, and the output shaft 9 of the coaxial servo actuator 8 is Move to the left. Then, via the guide 13 and the screw 12, the cylinder chamber 14a is opened.

The oil in +4b flows into the cylinder chamber 18 in the transfer feeder 1 through pipes 5a and 5b, and the oil in the screw 1-
One of the two-dimensional or three-dimensional movements is initiated by pushing the button 16 upward in one direction. At this time, the movement of the piston 16 and the movement of the output shaft 9 are monitored and confirmed by sensors 17 and 10, and at the same time, feedback is applied to the DC servo motor 6.

The oil in the cylinder chamber 19 flows into the accumulator 20 through the pipe 21, and the movement of the piston 16 causes the oil to flow into the accumulator 20.
Clamping action is applied to bar pawls (not shown).

Next, in the case of unclamping, the servo motor 6 starts jφ rotation in response to a command from the setting device and control unit 1 . Due to this reverse rotation, the output shaft 9 moves to the right in accordance with the rotational speed of the servo motor 6, and oil flows into the cylinder chamber 19 by the action of the accumulator 20, and the oil in the cylinder chamber 18 is transferred to the pipe 5.
a, 5b into the cylinder chambers 14a, L4b, and pushes the guide 13 to the right via the piston 12, causing the piston 16 to move along the operating characteristics of the output shaft 9 while contacting the output shaft 9. Then, an unclamping operation is performed.

(Effect of the invention) When obtaining the timing and operating characteristics shown in FIGS.
N), stroke (S), each operating range (θ1.(+, 2
, +93) and other necessary data.

The operation of the DC servo motor 6 is controlled according to this human power value, and the operation is performed as explained in the section of the operation of the invention.

In the embodiment, the operating characteristic is a cycloid, but it goes without saying that the motion can be easily obtained by providing other equations for the operating characteristic.

” According to the explanation in 1., in the production of small workpieces, 1.
- By reducing the movement of the transfer feeder, high-speed production is possible, and if it is necessary to make the lift stroke more efficient, the movement range 0 can be increased to keep the speed and acceleration below a certain value. If you do this, you will be able to deal with it. Of course, in this case, the operating ranges of the clamp system and advance system are also affected, so stiffness etc. must be set at the same time.

In this way, the present invention can be applied to both large and small workpieces, but this is an effect that cannot be obtained with conventional cam-type devices, and the above-mentioned changes can be made by simple operation of the setting device.

In addition, when performing 7 two-dimensional feeding, use the lift stroke (S).
This becomes possible by setting 0 to O, and there is an advantage that two-dimensional and three-dimensional 1 to 3D surfaces can be achieved in the same device.

Furthermore, since the two-dimensional and three-dimensional transfer feed devices, motion generator, setting device and control unit, and hydraulic power unit are independent, the transfer feed device is installed in the applied side opening of the press. However, there are no restrictions on the locations of the other three units, which is very advantageous in terms of installation space in the building. This naturally makes the area around the press cleaner and improves work efficiency.

Furthermore, when feeding and taking out billets to and from a transfer feeder in synchronization, the motion can be easily taken out by adding each unit of a motion generator.

[Brief explanation of the drawing]

FIG. 1 is an overall system configuration diagram of the present invention 1-transfer feeder. FIG. 2 is an operation timing chart for one cycle. FIG. 3 is an operation characteristic diagram for clamp operation. In the figure: ■ Two-dimensional and three-dimensional 1 - transfer feed device 2 Motion generator 3 Setting device and control unit 4 Hydraulic power unit 1 - 5a, 5b Pipe line 6 DC servo motor 7 Coupling 8 Coaxial servo actuator 9 Output shaft 10 Sensor 11 Tuning cylinder 12 Piston 13 Guide 14a, 14b Cylinder chamber 15
Cylinder 16 Piston 17 Sensor
18 Cylinder chamber 19 Cylinder chamber 20 Accumulator 21 Conduit 22 Pressure supply conduit 23 Tank return conduit or higher

Claims (1)

[Scope of Claims] [1] A motion generator having a motion generator configured to operate a synchronized cylinder via a servo actuator equipped with a hydraulic power unit driven by a DC servo motor controlled by a setting device and a control unit; A motion generator type transfer feeder consisting of two-dimensional and three-dimensional transfer feed devices that operate a transfer feeder by operating a piston using hydraulic pressure generated by a generator. [2] It has a sensor that detects the movement of the piston and a sensor that detects the output of the coaxial servo actuator, and controls by feeding back signals from each sensor to the setting device and control unit. The motion generator type transfer feeder according to claim [1], characterized in that: