KR20120067396A - The automatic door - Google Patents

The automatic door Download PDF

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Publication number
KR20120067396A
KR20120067396A KR1020100128767A KR20100128767A KR20120067396A KR 20120067396 A KR20120067396 A KR 20120067396A KR 1020100128767 A KR1020100128767 A KR 1020100128767A KR 20100128767 A KR20100128767 A KR 20100128767A KR 20120067396 A KR20120067396 A KR 20120067396A
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KR
South Korea
Prior art keywords
door
machine tool
unit
belt
auto
Prior art date
Application number
KR1020100128767A
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Korean (ko)
Inventor
김영길
Original Assignee
두산인프라코어 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 두산인프라코어 주식회사 filed Critical 두산인프라코어 주식회사
Priority to KR1020100128767A priority Critical patent/KR20120067396A/en
Publication of KR20120067396A publication Critical patent/KR20120067396A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/08—Protective coverings for parts of machine tools; Splash guards
    • B23Q11/0825—Relatively slidable coverings, e.g. telescopic
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/70—Power-operated mechanisms for wings with automatic actuation
    • E05F15/72—Power-operated mechanisms for wings with automatic actuation responsive to emergency conditions, e.g. fire
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/70—Power-operated mechanisms for wings with automatic actuation
    • E05F15/73—Power-operated mechanisms for wings with automatic actuation responsive to movement or presence of persons or objects

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Auxiliary Devices For Machine Tools (AREA)

Abstract

The present invention relates to an auto door of a machine tool.
The auto door of the machine tool according to the present invention is installed on one side of the machine tool 10, the opening and closing drive unit 100 and the door 20 to open and close the door 20 by the driving force of the servomotor 110. Emergency switch unit installed on one side of the sensing unit detects a sensing target near and generates a signal to stop the operation of the servomotor 110 when the sensing target is detected, and does not generate a signal when the door 20 is normally closed. 200.

Figure P1020100128767

Description

Automatic door of machine tool

The present invention relates to an auto door of a machine tool, and more particularly, to an auto door of a machine tool installed in the machine tool to close the processing area.

In general, an automatic door is installed in a machine tool, and the above-described automatic door allows the processing area for cutting a workpiece to be closed from the outside and ensures the safety of the operator.

More specifically, the auto door is opened when the workpiece is installed or the inside of the machine tool is stopped while the spindle of the machine tool is stopped. The auto door is closed to secure it.

On the other hand, the above-described auto door is provided as a durable structure to prevent the tool from being broken out of the main shaft, thereby making the weight of the auto door somewhat heavy.

As described above, the auto door of a heavy body is a burden to open and close by manpower, so conventionally, a pneumatic cylinder is used as an opening and closing power source of the auto door.

A conventional auto door will be described in more detail with reference to FIG. 1.

1 is a view for explaining the opening and closing structure of a conventional auto door.

As shown in FIG. 1, in the related art, the door 20 is installed in the form of a sliding door in front of the machine tool 10, and is opened and closed toward the body panel 30, and the pneumatic cylinder 40 is disposed on one side of the machine tool 10. Is installed, the rod 42 of the above-described pneumatic cylinder 40 is connected to the door 20.

That is, when the door 20 is to be opened or closed, the pneumatic cylinder 40 described above is operated to open and close the door 20.

On the other hand, the internal work of the machine tool 10 is performed in the state in which the door 20 is open, in which case the door 20 may be closed for an unknown reason, and the door (in this unexpected situation) If 20) is closed, the risk of a worker's safety accident increases.

That is, when the door 20 is closed in a state where the door 20 is not expected to be closed, the operator may not avoid the door 20 and the worker and the door 20 may collide, and the door 20 may have a constant resistance. As a result, a safety device is provided to sense this resistance and stop the door 20 from continuing.

However, even if a command to stop the door 20 by the above-described safety device is issued, there is a problem that the operator may be injured even if the door 20 is lightly hit.

In particular, in order to stop the progress of the door 20, the pneumatic cylinder 40 must be stopped immediately, but since the air has a compressive property, even if the pneumatic cylinder 40 is stopped by a command, a time difference occurs until it is completely stopped. There is a problem that the safety accident of the worker can not be avoided.

Therefore, the technical problem to be achieved by the present invention is to prevent the collision impact with the target by stopping the progress of the door as soon as the door is in contact with a nearby object such as an operator or an object even if the door installed in the machine tool is closed in an unexpected situation It is an object of the present invention to provide an automatic door of a machine tool to ensure the safety of the operator.

The present invention has been made in view of the above problems, and it is an object of the present invention to at least partially solve the problems in the conventional arts. There will be.

The automatic door of the machine tool according to the present invention for achieving the above technical problem, is installed on one side of the machine tool opening and closing drive unit for opening and closing the door by the driving force of the servo motor; And an emergency switch unit installed at one side of the door to detect contact with an operator and to generate a signal to stop driving of the servomotor when the operator is detected, and not to generate the signal when the door is normally closed. do.

In addition, the opening and closing drive unit, the drive pulley is installed on the drive shaft of the servo motor; A belt wound around the drive pulley; An idler pulley installed on one side of the machine tool and wound around the belt; A tension adjusting unit for adjusting the tension of the belt by varying the position of the idle pulley; And a door belt fixing unit installed at one side of the door and fixed to a portion of the belt.

In addition, the emergency switch unit, the bracket is provided on one side of the door; A sensor unit installed on the bracket to protrude from the door to detect an operator and to generate the signal when the operator is detected; A sensor guard installed on the body panel of the machine tool to receive the sensor unit when the door is normally closed and to prevent the sensor unit from being affected by interference from the outside; And a cable duct supporter unit installed at one side of the machine tool and the door to protect the cable which transmits the signal generated from the sensor unit to the servo motor from being affected by the opening and closing of the door. have.

Specific details of other embodiments are included in the detailed description and the drawings.

The automatic door of the machine tool according to the present invention made as described above can immediately stop the progress of the door by operating the emergency switch as soon as the door touches the operator when the door is closed in an unexpected situation, so that the impact shock does not occur. The safety of the operator can be ensured and the objects touched are safe from impact impact.

1 is a view for explaining the opening and closing structure of a conventional auto door.
2 and 3 are views for explaining the automatic door of the machine tool according to an embodiment of the present invention,
2 is a view showing a state in which the auto door is closed,
3 is a view illustrating an open state of the auto door.
4 is a view for explaining a tension control unit of the opening and closing drive unit in the auto door of the machine tool according to an embodiment of the present invention.
5 and 6 are a perspective view and a plan view for explaining the emergency switch unit in the auto door of the machine tool according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings.

Like reference numerals refer to like elements throughout.

Hereinafter, an auto door of a machine tool according to an embodiment of the present invention will be described with reference to FIGS. 2 and 3.

2 and 3 are views for explaining the auto door of the machine tool according to an embodiment of the present invention, Figure 2 is a view showing the auto door is closed, Figure 3 is the auto door is open This figure shows the state.

As shown in Figure 2 and 3, the front of the machine tool 10 is provided with a door 20 in the form of a sliding door is opened and closed toward the body panel 30.

In addition, on one side of the machine tool 10 described above, the opening and closing drive unit 100 is arranged to open and close the door 20 by the driving force of the servo motor 110.

In addition, the emergency switch unit 200 is installed in the above-described door 20 and the body panel 30, and the emergency switch unit 200 is described above when an operator is detected when the door 20 is closed. A signal is generated to stop driving of the servomotor 110, and the above-described signal is not generated when the door 20 is normally closed.

The above-described opening and closing drive unit 100 will be described in more detail with reference to FIG. 3.

As shown in FIG. 3, the above-described opening and closing drive unit 100 has a driving pulley 112 installed on the drive shaft of the servo motor 110 described above, and an idle pulley (ie, at a position spaced apart from the driving pulley 112 described above). 128 is installed, and the belt 130 is wound around the driving pulley 112 and the idle pulley 128 described above.

In addition, the above-described belt 130 may be adjusted by varying the position of the idle pulley 128 described above, the tension control unit 120 to adjust the tension of the idle pulley 128 described above It is installed on one side of the machine tool 10.

On the other hand, a part of the belt 130 described above is fixed to the one side of the door 20 described above by the door belt fixing unit 140.

That is, when the above-described servo motor 110 is driven, the above-described belt 130 travels in the forward direction or the backward direction, and the door 20 is opened and closed by being driven by the above-described traveling movement of the belt 130.

In addition, the above-described belt 130 may be loosened by increasing the length when used for a long time, in this case, the tension of the belt 130 by adjusting the tension of the belt 130 using the above-described tension adjusting unit 120 Can be maintained.

The above-described tension adjusting unit 120 will be described in more detail with reference to FIG. 4.

4 is a view for explaining a tension control unit of the opening and closing drive unit in the auto door of the machine tool according to an embodiment of the present invention.

As shown in FIG. 4, the tension adjusting unit 120 includes a base plate 122 installed on one side of the machine tool 10 and a movable plate fixedly fixed at an installation position above the base plate 122. 124, the bracket 126 is installed on the movable plate 124 described above, and the idle pulley 128 is variably installed.

The base plate 122 is fastened in such a way that the body 122a is formed to protrude in a vertical direction on one side, and the first adjusting bolt 122b is penetrated to the body 122a.

The first long hole 124a is formed in the movable plate 124 described above, and the first bolt 125 penetrates the first long hole 124a to be fastened to the base plate 122 described above. The position of the above-described movable plate 124 can be changed by the free space of the first long hole 124a and the above-described first bolt 125.

The above-described bracket 126 is formed with a second long hole 126a extending in a direction orthogonal to the longitudinal direction of the above-mentioned first long hole 124a, and the above-mentioned idle pulley 128 is formed in the second long hole 124a. The pulley shaft 128a is penetrated, and one side of the bracket 126 is provided with a female screw 126c, and the female screw 126c is fastened in a manner such that the second adjusting bolt 126b is penetrated. An end of the second adjustment bolt 126b is disposed to contact one side of the pulley shaft 128a described above.

That is, by varying and fixing the position of the first movable plate 124 described above, the meandering of the belt 130 is prevented from running and thus, the smooth driving is performed. The pulley shaft 128a is the second long hole ( The position of the pulley shaft 128a may be fixed by tightening the above-described second bolt 126c after moving to a proper position within the free space with 126a.

The door belt fixing unit 140 has the door fixing bracket 142 installed on the upper side of the door 20, the belt bracket unit 144 is installed on the fixing bracket 142, and the belt clamp unit described above. 144 is fixed to a portion of the belt 130 described above.

That is, the above-described door belt fixing unit 140 transmits the movement of the belt 130 to the door 20 described above.

The above-mentioned emergency switch unit 200 will be described in more detail with reference to FIGS. 5 and 6.

5 and 6 are a perspective view and a plan view for explaining the emergency switch unit in the auto door of the machine tool according to an embodiment of the present invention.

The emergency switch unit 200 is installed on one side of the bracket 210 installed on one side of the door 20, the sensor unit 220 installed on the above-described bracket 210, and one side of the body panel 30 described above. It is configured to include a sensor guard 230 to protect the above-described sensor unit 220 from being affected by the outside when the 20 is closed.

As described above, the sensor unit 220 is installed in the bracket 210 so as to protrude from the above-described door 20 so that the door 20 is in contact with the operator in advance of the door 20 when the door 20 is closed. To generate a signal to stop the servo motor 110 when the operator detects.

In the above description, the sensor unit 220 has been described as sensing the worker. However, the sensor unit 220 is described for clarity of understanding and is not limited to the worker. For example, the sensor unit 220 may be an object such as a structure other than the worker.

The above-described sensor unit 220 is installed on the bracket 210 by the auxiliary frame 222, and the above-described sensor unit 220 detects an object by touch sensing.

As illustrated in FIG. 6, the sensor guard 230 described above is formed in a polygonal shape in which the first side 232 and the second side 234 form a predetermined angle. The second side 234 of the other side is fixed to the body panel 30, and the sensor unit 220 is accommodated when the door 20 is closed, thereby closing the sensor unit 220 described above from the outside. The sensor unit 220 is not affected by interference from the outside.

That is, when the door 20 is hit by an operator or other objects in the process of closing, the sensor unit 220 is contacted with the object in advance than the door 20 itself to stop the servomotor 110.

On the other hand, since the sensor unit 220 is concealed from the outside when the door 20 is normally closed, the sensor guard 230 even if the operator inadvertently picks up the hand or contacts another tool on the sensor unit 220 side. The sensor unit 220 is protected by) so that the door 20 is not opened by a signal generated from the sensor unit 220.

On the other hand, the signal generated by the above-described sensor unit 220 is transmitted to the servo motor 110 through the cable 224 at this time, the door 20 is opened and closed, the protection of the cable 224 described above is required and Cable duct 156 is used to protect one cable 224.

In addition, the above-described cable duct 156 is actively configured to be folded or unfolded to be folded or unfolded in accordance with the opening and closing of the door 20, the above-described cable duct 156 is supported by the cable duct supporter unit 150 Can be.

In the above-described cable duct supporter unit 150, as shown in FIGS. 2 and 3, a first cable duct supporter 152 is installed on one side of the machine tool 10, and a second cable is provided on one side of the door 20. The duct supporter 154 is installed to face the first cable duct supporter 152 described above, one side of the cable duct 156 described above is fixed to the first cable duct supporter 152 described above, and the cable duct described above. The other side of 156 is fixed to the second cable duct supporter 154 described above, and the middle of the cable duct 156 described above is the first and second cable duct supporters described above according to the opening / closing position of the door 20. It is folded or unfolded at (152) (524).

That is, the cable 224 described above may not be directly affected by the opening and closing of the door 20 described above, and thus the cable 224 may be protected.

The auto door of the machine tool according to the embodiment of the present invention constructed and operated as described above is controlled by the emergency switch unit 200 before the door 20 when the door 20 is closed in an unexpected state. It can be detected, and when the object is detected can immediately stop the door 20 to prevent the impact impact with the door 20.

In particular, when the door 20 hits the worker, the emergency switch unit 200 generates a signal to immediately stop the servo motor 110 and stops the progress of the door 20. This can significantly reduce the risk.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. will be.

It is therefore to be understood that the embodiments described above are to be considered in all respects only as illustrative and not restrictive, the scope of the invention being indicated by the appended claims, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

The automatic door of the machine tool according to the present invention can be used to block the machining area and the external space of the machine tool to prevent the risk of safety accidents.

10: machine tool 20: door
30: body panel
40: pneumatic cylinder 42: rod
100: open and close drive unit 110: servo motor
112: drive pulley 120: tension control unit
122: base plate 122a: body
122b: first adjusting bolt 124: movable plate
124a: first hole 126: bracket
126a: 2nd hole 126b: 2nd adjustment bolt
126c: female thread 128: children pulley
128a: pulley shaft 130: belt
140: door belt fixing unit 142: door fixing bracket
144: belt clamp unit 150: cable duct supporter unit
152, 154: first and second cable duct supporter 156: cable duct
200: emergency switch unit 210: bracket
220: sensor unit 230: sensor guard

Claims (3)

An opening and closing drive unit 100 installed at one side of the machine tool 10 to open and close the door 20 by a driving force of the servomotor 110; And
It is installed on one side of the door 20 detects a sensing target to approach, and generates a signal to stop the driving of the servo motor 110 when the sensing target is detected, the signal when the door 20 is normally closed Emergency switch unit 200 so as not to generate;
Auto door of the machine tool comprising a.
The method of claim 1,
The opening and closing drive unit 100,
A drive pulley 112 installed on a drive shaft of the servo motor 110;
A belt (130) wound on one side of the driving pulley (112);
An idle pulley (128) installed at one side of the machine tool (10) to which the other side of the belt (130) is wound;
A tension adjusting unit 120 for adjusting the tension of the belt 130 by varying the position of the idle pulley 128; And
A door belt fixing unit (140) installed at one side of the door (20) and supported by a portion of the belt (130);
Auto door of the machine tool comprising a.
The method of claim 1,
The emergency switch unit 200,
A bracket 210 installed on one side of the door 20;
A sensor unit 220 installed in the bracket 210 so as to protrude from the door 20 and generating the signal when sensing a sensing object approaching the door 210;
Installed in the body panel 30 of the machine tool 10 to accommodate the sensor unit 220 when the door 20 is normally closed, so that the sensor unit 220 is not affected by interference from the outside Sensor guard 230; And
The cable 224 of the door 20 is installed on one side of the machine tool 10 and the door 20 to transmit the signal generated by the sensor unit 220 to the servo motor 110. Cable duct supporter unit 150 to protect from being affected by opening and closing;
Auto door of the machine tool comprising a.
KR1020100128767A 2010-12-16 2010-12-16 The automatic door KR20120067396A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100128767A KR20120067396A (en) 2010-12-16 2010-12-16 The automatic door

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100128767A KR20120067396A (en) 2010-12-16 2010-12-16 The automatic door

Publications (1)

Publication Number Publication Date
KR20120067396A true KR20120067396A (en) 2012-06-26

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103015841A (en) * 2013-01-11 2013-04-03 南京欧创机电有限公司 Numerically-controlled machine tool linkage double door
CN108621666A (en) * 2017-09-27 2018-10-09 深圳市久久犇自动化设备股份有限公司 Five axis carving machines and its automatic door structure
CN110757238A (en) * 2019-10-31 2020-02-07 陈楚燕 Intelligent protection type digit control machine tool
JP2020199619A (en) * 2019-06-12 2020-12-17 Dmg森精機株式会社 Machine tool

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103015841A (en) * 2013-01-11 2013-04-03 南京欧创机电有限公司 Numerically-controlled machine tool linkage double door
CN108621666A (en) * 2017-09-27 2018-10-09 深圳市久久犇自动化设备股份有限公司 Five axis carving machines and its automatic door structure
CN108621666B (en) * 2017-09-27 2024-04-02 深圳市久久犇自动化设备股份有限公司 Five-axis engraving and milling machine and automatic door structure thereof
JP2020199619A (en) * 2019-06-12 2020-12-17 Dmg森精機株式会社 Machine tool
CN110757238A (en) * 2019-10-31 2020-02-07 陈楚燕 Intelligent protection type digit control machine tool

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