KR101245982B1 - Apparatus for Automatic Auto Door Reducting Speed Unit of CNC and Method Thereof - Google Patents

Abstract

The present invention relates to an automatic door automatic deceleration apparatus and method for a machine tool, characterized in that to reduce the feed rate by controlling the feed rate of the door when the auto door reaches a certain point from the starting position,

An auto door installed at the front of the machine tool and operated by pneumatic pressure; A door opening sensor installed at a point at which the auto door is completely opened; A door closing sensor installed at a point at which the auto door is completely closed; A cylinder assembly for opening and closing the auto door by pneumatic pressure; An auxiliary cylinder assembly for deceleration control connected to the cylinder assembly to provide normal pneumatic pressure until reaching the deceleration point, and to provide low pressure pneumatic pressure when the deceleration point is reached; When the deceleration point is reached according to the operation signal of the cylinder assembly, the flow rate of the auxiliary cylinder assembly for deceleration control is automatically controlled to change the flow rate from the auxiliary cylinder to the bypass line, and if the door open sensor or the door close sensor is activated, the It is characterized by including a control unit for blocking.

Machine Tool, Auto Door, Automatic Deceleration

Description

Apparatus for Automatic Auto Door Reducting Speed Unit of CNC and Method Thereof}

1 is a configuration of a machine tool installed in a typical auto door.

2 is a cross-sectional view illustrating a general auto door.

3 is a block diagram of the automatic automatic deceleration device of the present invention.

4 is an operation flowchart of the present invention.

Description of the Related Art [0002]

110: cylinder assembly

120: auxiliary cylinder assembly for deceleration control

121: auxiliary cylinder

130: bypass line

140: control unit

The present invention relates to an automatic door automatic deceleration device and method of a machine tool, and in particular, when the automatic door reaches a certain point from the starting position, the speed of the machine tool is reduced by controlling the feed speed of the door. The present invention relates to an automatic door deceleration apparatus and method.

Auto doors installed in the multi-task machine are installed outside of the machine tool to prevent chips or coolants generated from the work area of the machine tool from scattering to the outside.

1 shows a multi-task machine equipped with an auto door.

As shown, the auto door 10 is attached to the outer surface of the multi-task machine 1 to effectively block the work area 20 and the outside.

The auto door 10 is opened and closed by the door switch of the operation panel 30 attached to one side of the machine tool.

That is, in order to open a closed auto door or to close an open auto door, an operator touches a door switch of an operation panel.

By the way, autodoors, unlike manual doors, have a convenient advantage that can be operated only by the operation of a switch without manpower. However, since the operating speed cannot be arbitrarily adjusted, a large impact sound is generated during opening or closing.

2 shows such a conventional autodoor.

Attach the opening confirmation sensor 40 at the point where the auto door 10 is opened, and attach the closing confirmation sensor 50 at the point where the auto door 10 is closed to open or close the auto door that was operating at high speed. When the point is reached, these sensors are activated.

When the opening and closing confirmation sensors 40 and 50 are operated in this way, the controller inside the machine tool or the controller of the CNC device is stopped by reducing the operating speed of the auto door.

Reference numeral 11 in FIG. 2 denotes a window mounted on the auto door, and 12 denotes a handle.

An object of the present invention is to provide a deceleration control device that can reduce the running speed of an autodoor in the last moment when the inventor closes or opens the autodoor.

As a means for achieving the above object,

The present invention is installed on the front of the machine tool and the auto door operated by pneumatic; A door opening sensor installed at a point at which the auto door is completely opened; A door closing sensor installed at a point at which the auto door is completely closed; A cylinder assembly for opening and closing the auto door by pneumatic pressure; An auxiliary cylinder assembly for deceleration control connected to the cylinder assembly to provide normal pneumatic pressure until reaching the deceleration point, and to provide low pressure pneumatic pressure when the deceleration point is reached; When the deceleration point is reached according to the operation signal of the cylinder assembly, the flow rate of the auxiliary cylinder assembly for deceleration control is automatically controlled to change the flow rate from the auxiliary cylinder to the bypass line, and when the door open sensor or the door close sensor is activated, pneumatic pressure is applied. It is characterized by including a control unit for blocking.

In addition, the control unit is characterized in that the deceleration command of the automatic door when the 70% position from the start position of the opening and closing section is reached.

In addition, when the operator touches the door switch of the operation panel to open or close the auto door, the first step of inputting the door opening and closing signal to the control unit; A second step of controlling to open or close the door when a door open / close signal is input; If it is determined by the door open signal, the solenoid of the cylinder assembly is controlled to allow compressed air to be injected into the B port of the air cylinder, thereby opening it at a constant speed. Closing the door at a constant speed; If the door is transported from the initial starting position to 70% position while closing the auto door at a constant speed, it controls the deceleration control solenoid valve to close the auxiliary cylinder, and at the same time forms a pneumatic passage through the bypass line so that low pressure air A fourth step of decelerating the operation of the autodoor by supplying it through the air; When the opening confirmation sensor is turned on or the closing confirmation sensor is turned on during the deceleration, the fifth step of stopping the door by stopping the supply of pneumatics by controlling the cylinder assembly is characterized by progressing sequentially.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and the preferred embodiments associated with the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, like reference numerals refer to the like elements throughout. The same elements are denoted by the same reference numerals even though they are shown in different drawings. In addition, in the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

3 is a block diagram of the automatic automatic deceleration device of the present invention,

The auto door of the present invention is provided with an opening confirmation sensor 40 and a closing confirmation sensor 50, and changes the air pressure according to the deceleration point in the operating section of the auto door, just before the auto door is completely opened or just closed completely. In order to minimize the impact sound by reducing the running speed of the auto door.

To this end, the present invention is characterized in that the auxiliary cylinder assembly 120 for deceleration control is further added to the conventional cylinder assembly 110, the auxiliary cylinder assembly consists of the bypass line 130 and the auxiliary cylinder for deceleration control 121. When the deceleration control auxiliary cylinder 121 is configured to be opened and closed through a solenoid valve, and the control unit 140 properly controls the cylinder assembly 110 and the auxiliary cylinder assembly 120 so that the door reaches an appropriate position. Give the deceleration command and let the door move to the end point slowly.

That is, normal pneumatic pressure may be provided through the auxiliary cylinder 121 by the operation of the solenoid valve, or low pressure air may be provided through the bypass line 130 by blocking the solenoid valve.

When the control unit 140 of the present invention reaches the deceleration point according to the operation signal of the cylinder assembly 110, the control unit 140 automatically controls the flow rate of the deceleration control auxiliary cylinder assembly 120 to bypass the line (by-pass) from the auxiliary cylinder 121. 130) change the flow rate.

In this case, the bypass line 130 forms a smaller inner diameter than the pipeline constituting the cylinder assembly 110 and the auxiliary cylinder assembly 120, which is to output low-pressure air to the auto door. When the inner diameter is reduced at the time of forming the bypass line 130, a low pressure pressure is provided.

When the inner diameter of the bypass line 130 is reduced in the above, low pressure is provided. This is because the pressure decreases when the inner diameter is reduced due to the characteristics of the air pressure. If the fluid is used, the auxiliary cylinder 121 and the bypass line 130 are used. Since the same pressure is provided at), the pressure cannot be changed.

Therefore, in order to apply the present invention, it is necessary to use pneumatic pressure, and thus can be divided into a relatively high pressure through the auxiliary cylinder 121 and a relatively low pressure through the bypass line 130, according to the need in the control unit 140 Accordingly, the high pressure line and the low pressure line can be selectively controlled.

In addition, in the present invention, the deceleration operation is performed when the door progresses about 70% of the total length of opening and closing, and the 70% of the distance is 70% of the total distance by checking the total time of flowing the auto door and inverting it to the distance. The distance is determined, and therefore, the vehicle moves at a constant speed for a time corresponding to 70% of the distance, and when this time passes, the deceleration operation is commanded.

For example, if the total running time of the door is 1 second, the command is to decelerate after 0.7 seconds, which is 70% of the time when the door is moved. If the total running time of the door is 2 seconds, 70% of the time when the door is moved. After 1.4 seconds, command deceleration.

Hereinafter, the auto door deceleration control method of the present invention will be described in detail with reference to FIG. 4.

First step S1: When the operator touches the door switch of the operation panel to open or close the auto door, this door open / close signal is input to the control unit.

Second Step (S2): When the door open / close signal is input, the control unit determines whether the open / close signal is a door open signal or a door closed signal, and recognizes that the door is closed when the closing confirmation sensor is turned on to open the door. If the door open confirmation sensor is turned on, the door is recognized as open and the door is closed.

Third Step (S3): When it is determined that the door open signal is determined in the second step, the control unit controls the solenoid of the cylinder assembly so that the compressed air is injected into the B port of the air cylinder to open at a constant speed, and the door close signal. If it is determined, compressed air is injected into the A port of the air cylinder to close the door at a constant speed.

Fourth Step (S4): If the door is transported from the initial starting position to 70% position while closing the auto door at constant speed, the control unit controls the deceleration control solenoid valve to close the auxiliary cylinder and at the same time the air pressure to the bypass line. It forms a passageway so that low pressure air is supplied through the cylinder assembly to slow down the operation of the autodoor.

The fifth step (S5): If the opening confirmation sensor is turned on or the closing confirmation sensor is turned on during deceleration, the control unit stops the door by stopping the supply of pneumatic by controlling the cylinder assembly.

As such, the present invention minimizes the noise by reducing the impact force by reducing the running speed of the door before the door is completely opened or closed.

As described above, the present invention provides an effect of minimizing the impact sound caused by the impact when the door is opened or closed by reducing the speed of the door at a certain point in the total travel distance of the door.

Although the present invention has been described in connection with the preferred embodiments mentioned above, various other modifications and variations will be possible without departing from the spirit and scope of the invention. It is, therefore, to be understood that the appended claims are intended to cover such modifications and changes as fall within the true scope of the invention.

Claims (3)

An auto door 10 installed at the front of the machine tool and operated by pneumatic pressure; A door open sensor 40 installed at a point where the auto door 10 is completely opened; A door closing sensor 50 installed at a point where the auto door 10 is completely closed; A cylinder assembly 110 for opening and closing the auto door 10 by pneumatic pressure; An auxiliary cylinder assembly 120 for deceleration control, comprising a bypass line and an auxiliary cylinder, connected to the cylinder assembly 110 to provide normal pneumatic pressure until reaching the deceleration point, and to provide low pressure pneumatic pressure when the deceleration point is reached; When the deceleration point is reached according to the operation signal of the cylinder assembly, the flow rate of the auxiliary cylinder assembly 120 for deceleration control is automatically controlled to change the flow rate from the auxiliary cylinder to the bypass line, and the door open sensor 40 or the door close detection is detected. When the sensor 50 is operated includes a control unit 140 to block the pneumatic, The control unit 140, the automatic door automatic deceleration device of the machine tool, characterized in that to give the deceleration command of the auto door when reaching the 70% position from the start position of the opening and closing section. delete A first step (S1) of inputting the door open / close signal to the control unit when the operator touches the door switch of the operation panel to open or close the auto door; A second step (S2) of controlling to open or close the door when the door open / close signal is input; If it is determined by the door open signal, the solenoid of the cylinder assembly is controlled to allow compressed air to be injected into the B port of the air cylinder, thereby opening it at a constant speed. A third step S3 of closing the door at a constant speed; If the door is transported from the initial starting position to 70% position while closing the auto door at a constant speed, it controls the deceleration control solenoid valve to close the auxiliary cylinder, and at the same time forms a pneumatic passage through the bypass line so that low pressure air A fourth step (S4) of slowing down the operation of the autodoor by supplying it through; When the open confirmation sensor is turned on or the close confirmation sensor is turned on during deceleration, the auto door of the machine tool is sequentially formed by a fifth step (S5) of stopping the door by stopping the supply of pneumatic by controlling the cylinder assembly. Auto deceleration method.

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