KR100615665B1 - Autonomic ejecting device and the method - Google Patents

Abstract

The present invention relates to an automatic casting apparatus for a casting of a die casting mold and a method thereof. The present invention relates to a die casting mold using a motor as a driving source of a main machine of an ejector and an encoder that detects the position or displacement information of the main body of the ejector by a digital quantity. The casting is automatically taken out to increase take-out performance and efficiency. The conventional automatic casting device for casting of die casting mold uses air cylinder or rotary actuator which operates sequentially through various media such as shock pressure bar as blower driving source, and the efficiency of ejection is lowered. Increasing the time delay of the operating cycles leads to a decrease in productivity and a great economic burden on the user side, and furthermore, the speed control and control ability are limited, which reduces the life of the shock absorber, which acts as a shock absorber when the machine is stopped. Furthermore, if the replacement time of the pressure shock absorber is missed, there is a problem of deteriorating the mechanical life and the equipment efficiency of the automatic ejection device due to impact. Therefore, the present invention uses a drive motor as a drive source of the main machine of the take-out machine in the automatic take-out device, and includes an encoder for encoding the position of the main machine of the take-out main arm to sense the position or displacement of the take-out main arm and detect Controls the speed and position of the motor by transmitting a digital signal to the encoder in response to the corrected position or displacement, and at the same time, it is equipped with forward and backward overrun limit switches to detect the abnormality of the ejector main arm position or displacement. Display error and stop the motor or sound an alarm to prepare for safety accidents when the casting of die casting mold is automatically taken out and to select the defective products. It will contribute to cost and quality improvement.

Die Casting Mold, Motor, Automatic Drawer, Encoder

Description

Automatic ejection device and the method             

1 is a plan view fixed to the operation side of the die casting mold in the automatic take-out apparatus according to the present invention.

Figure 2 is a plan view attached or fixed to the semi-operation side of the die casting mold in the automatic take-out apparatus according to the present invention.

3A, 3B and 3C are operation state diagrams showing the three-dimensional moving state of the automatic take-out apparatus according to the present invention.

Figure 4 is a rear left perspective view of the motor mounting mold in the automatic take-out apparatus according to the present invention.

5 is a front right side perspective view of the motor mounting mold in the automatic take-out apparatus according to the present invention.

6 is a flowchart illustrating an automatic extraction method using the automatic extraction apparatus according to the present invention.

* Description of the symbols for the main parts of the drawings *

8: Motor mounting mold 9: T-shaped coupling

12: main axis 13: encoder

21: ejector main arm

22: main arm joint 23: arm drive motor

28: Finger Bracket 31,32: Finger

35: auxiliary link 36: air cylinder for drawing and access

38: Clamp chuck air cylinder 44: Coupling

46: forward and backward overrun limit switch 49: finger rotation cylinder

The present invention relates to a device for automatically taking out a product of a die casting mold and a method thereof, and more particularly, to an extractor main having a motor for driving a drawer main arm and an encoder for detecting the speed and position of the motor. When the motor generates an abnormal condition while the arm is driving, the automatic extraction device and method for the safety accidents that occur when the casting of the die casting mold is automatically taken out by stopping the motor by the forward and backward overrun limit switches will be.

Die casting is a die casting machine. The die casting machine is a precision die casting method in which molten metal is injected into a steel die that is precisely machined to exactly match the required die casting shape. In order to control such a die-casting machine, a computer numerical control method using various sensors and encoders has been developed from the initial relay control method to the PLC control method.

In addition, the automatic product ejection device, which automatically ejects the final cast product from the die casting machine, uses the air cylinder or the rotary actuator to drive the arm joint straight or transversely to take out the product from the mold. And a time-consuming obstacle to the manufacture of the final finished product.

In addition, the automatic ejection device is connected to a decrease in productivity due to frequent failure of the air cylinder or the rotary actuator and the delay of the operating cycle time, which causes a large economic burden on the user side, and furthermore, the speed control and control ability is limited. If the air cylinder or the rotary actuator is stopped, the life of the pressure shock absorber acts as a lower layer, and the replacement time of the pressure shock absorber is missed. Resulted.

In addition, the automatic extraction device does not have a product sorting function using expensive articulated robot or the operator has been individually screening work with the naked eye. This has led to increased labor and production costs.

Accordingly, the present invention has been made in order to solve the above problems, the motor used as a drive source of the take-out main arm and the encoder for sensing and detecting the speed and position of the motor and electrically connected to the encoder A control unit for controlling the speed and position of the motor, and controlling the rotational speed and position of the motor according to the program command of the control unit, and when the motor generates an abnormal state while driving the ejector main arm, the forward and reverse overrun limit switches It is an object of the present invention to provide an automatic take-out apparatus and a method for automatically taking out a cast product after removing the abnormal state by stopping the motor.

Automatic casting device for casting of the die casting machine of the present invention for achieving the above object, in the automatic take-out device, the main arm 21, which advances or retracts into the die casting mold,

A motor mounting mold 8 supporting the ejector main arm 21;

A main shaft 12 penetrating and supporting the inside of the motor mounting mold 8;

A motor 23 installed below the motor mounting mold 8 and used as a driving source of the ejector main arm 21;

An encoder 13 fixed through the upper extension of the motor mounting mold 8 and detecting signals of the rotational speed and the displacement amount with respect to the motor 23,

The control unit 100 for electrically instructing the encoder 13 the forward completion signal and the reverse completion signal,

The auxiliary link 35 for maintaining the parallel to the die casting mold when the ejector main arm 21 is moved forward and backward into the die casting mold,

Clamp chuck air cylinder 38 which operates according to the forward completion signal and the reverse completion signal corresponding to the signals of the rotational speed and the displacement amount with respect to the motor 23 detected by the encoder 13,

A shock pressure bar 45 which acts as a shock absorber when the motor 23 is started and stopped between the reducer 53 and the encoder 13,

A forward and backward overrun limit switch 46 for automatically controlling the speed and position of the ejector main 21 arm, and

A reducer 53 is provided to provide a forward signal of the encoder 13 and a clamp chuck opening signal by a control command of the controller 100.

In addition, the casting automatic extraction device of the die-casting machine of the present invention, the finger main shaft 29 and the extractor connected to the ejector main arm 21 to grip and draw the casting by the driving of the clamp chuck air cylinder 38 The main arm 21 has a main arm joint 22 which keeps parallel with the die casting mold when advancing into the die casting mold.

In addition, the casting automatic extraction device of the die-casting machine of the present invention, the main shaft 12 of the motor mounting mold 8 receives the power from the motor 23 to give the arm driving force rotational kinetic energy to the main shaft 12 It is provided with a U-shaped coupling (9).

In addition, the automatic casting device for casting of the die casting machine of the present invention, the U-shaped carpooling 9 of the motor mounting mold 8 receives the rotational power from the motor 23 and the reduction gear 53 to receive the main shaft 12. The encoder 13 detecting the position of the ejector main arm 21 and the speed of the motor 23, the encoder holder 1 fixing the encoder 13, and the rotation of the main shaft 12. When an abnormality occurs in the forward and backward movement of the encoder coupler 44 and the ejector main arm 21 which transmit the rotational kinetic energy generated by the encoder 13, the motor 23 is stopped by detecting an abnormality. Or a sensor to sound an alarm.

In addition, in the automatic casting casting method of the die casting mold using the automatic casting casting apparatus of the die casting machine according to the present invention,

When rotational kinetic energy is generated by driving of the motor, the output of the encoder 13 facing the forward signal is received by the drawing / accessing air cylinder 36 and the ejector main arm 21 approaches the die casting mold (S1). );

When the advance of the ejector main arm 21 is completed in the approach step (S1), the clamp chuck air cylinder 38 receives the output of the encoder 13 facing the forward completion signal, and the clamp fingers 32 and 33 are cast. Gripping (S2);

When the extraction is completed in the gripping step S1, the output of the limit switch or sensor facing the clamp chuck restriction signal is received by the drawing / access air cylinder 36, and the ejector main arm 21 draws out from the die casting mold. Step S3; And,

When the reverse operation is completed in the drawing operation step (S3), the reverse rotation kinetic energy is generated by the driving of the motor 23, and the clamp chuck air cylinder 38 receives the output of the encoder 13 opposite to the reverse completion signal. A step (S4) of removing the casting from the fingers 32 and 33.

In addition, the casting casting method of the die casting machine of the present invention is the forward step (S1) and the backward step (S3) is the c-shaped coupling (9) via the reduction gear 53 is driven by the motor 23. The main shaft 12 is rotated by receiving the power generated at this time from the U-shaped coupling 9 connected to the main shaft 12 through the encoder 13.

In addition, the automatic casting method of the casting of the die casting machine of the present invention in the forward step (S1) and the reverse step (S3), the ejector main arm 21 when the advancing or retracting into the die casting mold (35) and The radius of rotation of the main arm joint 22 keeps parallel to the die casting mold.

In addition, the automatic casting casting method of the die-casting machine of the present invention receives the defect screening signal from the die-casting machine and further backwards by a predetermined angle from the reverse completion position to leave the product at the defective product screening position.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

1 is a plan view fixed to the operation side of the die casting mold in the automatic take-out apparatus according to the present invention. 2 is a plan view attached or fixed to the semi-operation side of the die casting mold in the automatic take-out apparatus according to the present invention. 3A, 3B and 3C are operation state diagrams showing the three-dimensional moving state of the automatic take-out apparatus according to the present invention. Figure 4 is a rear left perspective view of the motor mounting mold in the automatic take-out apparatus according to the present invention. 5 is a front right side perspective view of the motor mounting mold in the automatic take-out apparatus according to the present invention.

1 and 2, the automatic take-out apparatus of the present invention operates in a state where it is mounted or fixed to the operation side or the semi-operation side of the die casting mold.

3A, 3B, and 3C are operation state diagrams showing a three-dimensional movement state of the automatic take-out apparatus according to the present invention. The motor mounting mold 8 supporting the arm 21, the main shaft 12 penetrating the inner side of the motor mounting mold 8, and the encoder 13 fixed to the upper side of the motor mounting mold 8 are supported. ), As a driving source of the reducer 53 and the extractor main arm 21 which operate by receiving the output of the limit switch or sensor against the forward signal and the clamp chuck opening signal, which are operated by the output of the encoder 13. The motor 23 to be used and the forward and backward overrun limit switch 46 which clamps down the speed and the position of the said ejector main 21 arm automatically are provided.

In addition, the three-dimensional assembly automatic take-off device is an auxiliary link 35 having an appropriate rotation radius to maintain the parallel to the mold when the ejector main arm 21, the ejector main arm 21 is moved forward or backward into the die casting mold. And a motor mounting block 8 that operates by receiving the output of the encoder 13 opposed to the main arm joint 22, the forward signal, and the clamp chuck limiting signal, and detects a signal corresponding to the forward completion signal and the reverse completion signal. Clamp chuck air cylinder 38 that operates by receiving the output of the encoder 13, clamp fingers 32, 33 for pressing the casting by the operation, and receives the output of the encoder 13 corresponding to the reverse completion signal A motor mounting portion comprising a rotating finger center shaft 29, a small finger gear 2, a large finger gear 48, and a main shaft 12 is provided.

In other words, the automatic casting device for casting of the die casting machine of the present invention, in the motor mounting mold to protect the mold and prevent the safety accident, the main shaft 12 is the motor 23, the motor 23 of the arm driving force The U-shaped coupling 9 for rotating the main shaft 12 by receiving power from the encoder, and the encoder 13 for detecting the speed of the motor 23 according to the position and position of the main arm 21 of the extractor. A control unit (not shown) connected to the encoder 13 and controlling rotation and displacement of the motor 23, an encoder fixing unit 1 for fixing the encoder 13, and rotation of the main shaft 12. When an abnormality occurs in the forward and backward movement of the coupling 44 and the ejector main arm 21 to transmit the rotational kinetic energy generated by the encoder 13, the error is detected and the error of the corresponding control system is displayed. Forward or overrun limit to stop alarm or sound alarm A switch 46 or a sensor, or a limit switch 46 or a sensor for screening defects by abnormal data during product die casting, is provided.

4 and 5 show a rear left perspective view of the take-out device and a front right side perspective view of the motor mounting mold 8, respectively, in the automatic take-out device according to the present invention, and the motor mounting part 2 includes the main shaft bearings 20 and 43; 24), U-shaped coupling (9) and encoder holder (1). The main shaft 12 has a motor 23 for providing arm driving force and a U-shaped coupling 9 for rotating the main shaft 12 through the speed reducer 53 by the power from the motor 23. do.

In addition, the automatic ejection device includes an encoder 13 for detecting the speed of the motor 23 according to the position and position of the main body 21 of the ejector, an encoder holder 1 for fixing the encoder 13, and a main shaft ( The coupling 44 which transmits the rotational kinetic energy generated by the rotation of 12) to the encoder 13 and the arm drive motor 23 or the encoder 13 is abnormal in the forward and backward movement of the main machine 21 of the ejector. When an error occurs, it detects an abnormality, displays an error of the corresponding control system, and includes a forward and backward overrun limit switch 46 which stops the motor 23 or sounds an alarm.

6 is a flow chart illustrating an automatic take-out method using the automatic take-out apparatus according to the present invention.

In the automatic ejection method, when rotational kinetic energy is generated by the driving of the motor 23, the ejector main arm 21 is advanced into the die casting mold by the movement command of the encoder 13 facing the forward signal (S1). .

Here, the rotational kinetic energy generated by the driving of the motor 23 is first driven by the motor 23 connected to the U-shaped coupling 9 and transmits power to the main shaft 12 to supply the main shaft 12. Will rotate. When the main shaft 12 rotates, the main arm 21, the auxiliary link 35, the main arm joint 22, the finger center shaft 29, and the clamp fingers 32 and 33 are connected to the main shaft 12 and the motor. The U-shaped coupling 9, which is fixed to the shaft, rotates until a movement signal of rotational kinetic energy is generated. In addition, the movement signal of the rotational kinetic energy is transmitted to the encoder 13 through the c-shaped coupling 44, and the motion command output is generated in the encoder 13 in response to the forward signal. The ejector main arm 21 receiving the advance signal output from the encoder 13 is advanced into the die casting mold.

When the ejector main arm 21 advances into the die casting mold, the auxiliary link 13 and the main arm joint 22 maintain parallel to the die casting mold by the rotation radius.

In addition, the motor mounting portion 8 is provided with a forward and backward overrun limit switch 46 or a sensor, and if an abnormality occurs in the forward and backward advancement of the ejector main arm 21 due to the abnormality of the motor 23 or the encoder 13, Gene overrun limit switch 46 or sensor operates to detect an abnormality to display the error of the control system, stop the motor or sound an alarm to prevent equipment protection and personnel accidents in the event of a safety accident.

When the forwarding of the ejector main arm 21 is completed in the forward step S1, an output is generated in the encoder 3 facing the forward completion signal. The forward completion signal output from the encoder 13 is sent to the clamp chuck air cylinder 38, and the clamp fingers 32 and 33 which sense this are held by the die casting object (S2).

When the gripping of the die casting object is completed in the gripping step S2, the output of the limit switch 46 facing the clamp chuck limit signal is reversed from the die casting mold to draw the product from the die casting mold. (S3).

In the drawing step (S3), receiving the output of the limit switch 46 facing the signal for limiting the drawing, the reverse rotational kinetic energy is generated by the driving of the motor 23. When the extraction is completed, the limiting switch 46 for drawing completion is completed. ), The motor 23 rotates in reverse, and at this time, the generated reverse rotational kinetic energy of the motor 23 passes through the reduction gear 53 and the c-shaped coupling 9 through the main shaft 12 and the main. It is transmitted to the arm 21 and the like.

On the other hand, when the reverse rotational kinetic energy is generated, the signal of the reverse rotational kinetic energy is connected to the encoder 13 through the coupling 44, and an output is generated at the limit switch 46 facing the clamp chuck limiting signal. . The clamp chuck restriction signal outputted from the reverse rotational kinetic energy signal is reversed from the die casting mold when the take-out main arm 21 which detects the drawing signal.

At this time, maintaining the radius of rotation of the auxiliary link 35 and the main arm joint 22 is to maintain the parallel to the die casting mold when the ejector main arm 21 is reversed from the die casting mold, die casting die It can be prevented from hitting and breaking. In addition, the transversal upper portion of the clamp fingers (32, 33) is provided with a switch for detecting the product when the ejector main arm 21 is retracted, it can protect the mold and prevent accidents.

In the reverse step (S3), when the reverse is completed, an output is generated to the encoder 13 facing the reverse completion signal, and the reverse completion signal output therefrom is sent to the clamp chuck air cylinder 38, and the detected clamp Fingers 32 and 33 disengage the die casting object onto the die casting work surface (S4).

At this time, the backward completion signal output from the encoder 13 is also sent to the finger, and the finger center axis 28 which senses this signal is rotated to help the diecasting object to escape from the clamp fingers 32 and 33.

When detecting the defect sorting signal of the die-casting machine in the departure step (S4) receives the signal of the predetermined data and further backward by a predetermined angle to leave the die-casting object to execute the defective product sorting function.

Although the preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the above-described embodiments, and the general knowledge in the field of the present invention without departing from the gist of the present invention as claimed in the following claims. Anyone with a variety of modifications are possible, of course, such modifications will be within the scope of the claims.

As described above, the automatic casting machine of the die casting mold of the present invention and the method generate a command from the program of the control unit to control the speed and the position of the motor for driving the ejector main arm to encode the position of the ejector main arm. The position of the ejector main arm is controlled by an encoder, and if the motor generates an abnormal state while the ejector main arm is being driven, an error is displayed on the display unit by the forward and reverse overrun limit switches, and the motor is automatically stopped. Alarm or sound an alarm to prepare for a safety accident that occurs when the casting of the die casting mold is taken out automatically.

In addition, the automatic product extraction device and method of the die casting mold according to the present invention is capable of precise position control of the automatic extraction device by generating a command from the program of the control unit, thereby delaying the aging of the equipment due to the impact and reducing the cycle time. There is a useful effect of reducing the productivity by shortening.

In addition, the motor is used as a driving source on the arm drive side, and an encoder for detecting the position of the ejector main arm on the camshaft is used to measure the position of the ejector main arm and follow the command signal in response to the measured position. Automatically sorting die-casting objects without additional equipment by adjusting speed and position helps to reduce production cost and production cost.

In addition, when an abnormal condition occurs by the forward / reverse overrun limit switch, an error is displayed on the display unit, and the motor is stopped or an alarm is sounded to protect the device and to prevent personnel accidents.

Claims (8)

In the casting automatic extraction device of the die casting mold, Ejector main arm 21 for advancing or reversing into a die-casting mold, A motor mounting mold 8 supporting the ejector main arm 21; A main shaft 12 penetrating and supporting the inside of the motor mounting mold 8; A motor 23 installed below the motor mounting mold 8 and used as a driving source of the ejector main arm 21; An encoder 13 fixed through the upper extension of the motor mounting mold 8 and detecting signals of the rotational speed and the displacement amount with respect to the motor 23, The control unit 100 for electrically instructing the encoder 13 the forward completion signal and the reverse completion signal, The auxiliary link 35 for maintaining the parallel to the die casting mold when the ejector main arm 21 is moved forward and backward into the die casting mold, Clamp chuck air cylinder 38 which operates according to the forward completion signal and the reverse completion signal corresponding to the signals of the rotational speed and the displacement amount with respect to the motor 23 detected by the encoder 13, A shock pressure bar 45 which acts as a shock absorber when the motor 23 is started and stopped between the reducer 53 and the encoder 13, A forward and backward overrun limit switch 46 for automatically controlling the speed and position of the ejector main 21 arm, and And a decelerator (53) for providing a forward signal of the encoder (13) and a clamp chuck opening signal by a control command of the controller (100). 2. The extractor main arm (21) according to claim 1, wherein the extractor main arm (21) has a finger center shaft (29) and the extractor main arm (21) connected to grip and draw a casting by driving the clamp chuck air cylinder (38). Automatic ejection device characterized in that it comprises a main arm joint 22 to keep parallel to the die casting mold when advancing into the die casting mold. The c-shape coupling of claim 1, wherein the main shaft 12 of the motor mounting mold 8 receives power from the motor 23 that gives an arm driving force and transmits rotational kinetic energy to the main shaft 12. (9) the automatic take-out apparatus characterized by the above-mentioned. The U-shaped carpooling (9) of the motor mounting mold (8) receives the rotational power from the motor (23) and the reducer (53) to rotate the main shaft (12) and to take out the main body. Rotational kinetic energy generated by the rotation of the main shaft 12, the encoder 13 for detecting the position of the arm 21 and the speed of the motor 23, the encoder fixture 1 for fixing the encoder 13 When an abnormality occurs in the forward and backward movement of the encoder coupler 44 and the ejector main arm 21 which are transmitted to the encoder 13, a sensor which detects an abnormality and stops the motor 23 or sounds an alarm. Automatic take out device characterized in that it is provided. In the casting automatic extraction method of the die casting mold, When rotational kinetic energy is generated by driving of the motor, the output of the encoder 13 facing the forward signal is received by the drawing / accessing air cylinder 36 and the ejector main arm 21 approaches the die casting mold (S1). ); When the advance of the ejector main arm 21 is completed in the approach step (S1), the clamp chuck air cylinder 38 receives the output of the encoder 13 facing the forward completion signal, and the clamp fingers 32 and 33 are cast. Gripping (S2); When taking out is completed in the gripping step S1, the output of the limit switch facing the clamp chuck limiting signal is received by the drawing / accessing air cylinder 36, and the ejector main arm 21 draws out the die casting mold. (S3); When the reverse operation is completed in the drawing operation step (S3), the reverse rotation kinetic energy is generated by the driving of the motor 23, and the clamp chuck air cylinder 38 receives the output of the encoder 13 opposite to the reverse completion signal. Automatic ejection method characterized in that it comprises a step (S4) of the casting away from the finger (32,33). The method of claim 5, wherein the forward step (S1) and the backward step (S3) is driven by the motor 23 to rotate the c-shaped coupling (9) via the reduction gear (53), Automatic take-out method characterized in that the main shaft 12 is rotated by receiving power from the U-shaped coupling (9) connected to the main shaft (12) through the encoder (13). The method according to claim 5, wherein in the forward step (S1) and the reverse step (S3), the ejector main arm (21) of the auxiliary link (35) and the main arm joint (22) when the forward or backward into the die casting mold Automatic take-out method characterized in that to keep parallel with the die casting mold due to the rotation radius. delete

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