JP2011062773A - Sliding door type single swing two door device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sliding door type single swing two door device manufactured at a lower cost and having an enhanced effect of preventing leakage of coolant in the sliding door type single swing two door device including an inner door and an outer door that are movable in a width direction. <P>SOLUTION: An adhering surface 16 extending over an almost entire area in a height direction, and a sealing member 17 protruding to an inner side in a depth direction and adhering to the adhering surface 16, are arranged on the inner side surface of the outer door 4 of an inner door side while a door is closed. An abutting member 19 protruding to the inner door side in the width direction is arranged on the side surface of the inner door side of the outer door 4. An abutting surface 22 abutting on the sealing member 17 over the almost entire area in the height direction when the door is closed is arranged on the outer side surface of the inner door 5 on an outer door side while the door is closed. A plunger 24 urging the outer door 4 during closing in the width direction by pressing the abutting member 19, and a holding means holding a closed state against the pressing force of the plunger 24 when the door is closed and being not shown in the figure, are arranged in a machine body cover 1. The abutting surface 22 of the inner door 5 is made to be closely attached on the sealing member 17 by the pressing force of the plunger 24 when the door is closed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

    The present invention relates to a sliding door type single door two door device attached to a machine body cover of a machine tool, and more particularly to a seal structure of an overlapping portion of two doors.

  2. Description of the Related Art Conventionally, a door device described in Patent Document 1 is known as a sliding door type single door two door device that is attached to a machine body cover of a machine tool.

JP 2006-205337 A

Machine tool (machine center) machine body cover is provided with an opening for loading and unloading of workpieces and maintenance, and it is covered with a door device to ensure the safety of workers, so that chips and coolant during processing are not scattered outside. It has become.
Door devices are often used as sliding door type (horizontal slide type) double doors with double doors, single doors with one door, and double doors with one door. This is because the coolant attached to the door when the door is opened, This is to prevent chips from falling on the floor.
Among the door devices described above, the single door double door is advantageous in that the structure is simple and inexpensive compared to the double door double door, and the opening and closing time can be shortened. Moreover, the opening width can be made wider than that of a single door, and operation can be performed with less force. Further, since the storage property is good, there is an advantage that the body can be made compact. However, on the other hand, since there are many movable parts, there exists a fault that coolant tends to leak outside rather than a double door and a single door. In particular, it is easy to leak from the gap between the overlapping portions of the inner door and the outer door.

  Due to the recent increase in coolant pressure and cutting speed, coolant and chips are severely scattered during cutting, and it is required to reliably prevent coolant leakage from the machine body cover. For this reason, two-door double doors that are difficult to leak are the mainstream, but one-open two-door doors may be necessary due to the layout of the opening, which is advantageous for economic efficiency and downsizing of the fuselage. It has become necessary to take measures to prevent coolant leakage from the single door.

The door device of Patent Document 1 has a structure in which foreign matter does not accumulate on the rail, but there is a risk of coolant leakage from the gap. In addition, there is a problem that the structure is complicated and there are many components and the cost is high.
An object of the present invention is to solve the above-mentioned problems in the prior art, and to provide a sliding door type single-open two-door apparatus that is low in cost and highly effective in preventing coolant leakage.

  In order to solve the above-mentioned problems, the present invention is a door device provided in an opening portion of a machine tool cover of a machine tool, and includes an inner door and an outer door movable in the width direction, and is driven to have a full width section of the opening portion. The sliding door-type single-open two-door device that the inner door that has been moved overlaps with the inner side of the outer door in the prospective direction, covers almost the entire area in the height direction on the inner side of the outer door when the door is closed. A close contact surface and a seal member that protrudes inward in the prospective direction and closely contacts the close contact surface, and a contact member that protrudes toward the inner door side in the width direction is provided on the side surface of the outer door on the inner door side to close the door. The outer surface of the inner door on the outer door side in the state is provided with an abutment surface that abuts the seal member over substantially the entire height direction when the door is closed, while the abutment member is pressed against the fuselage cover. The biasing member that biases the outer door in the width direction when closed and the pressing force of the biasing member when the door is closed And a holding means for holding the closed state, the contact surface of the inner door by the pressing force of the biasing member when the door closed, characterized in that the close contact with the seal member.

In the above invention, more specifically, the urging member is a spring material.
Furthermore, the seal member is a rubber material having elasticity.
By these, the clearance gap of the overlap part of the inner door and outer door which is easy to leak coolant can be reliably closed by a simple method.

  According to the sliding door type single door two door device of the present invention, it is possible to reliably prevent the coolant from leaking from the gap between the overlapping portions of the inner door and the outer door. Further, since the number of parts is small with a simple structure, the cost is low.

It is a machine body cover perspective view of a machine tool provided with the sliding door type single door two door device of the present invention. It is a machine body cover side view of a machine tool provided with the sliding door type single door two door device of the present invention. It is the III-III sectional view in Drawing 2, and is a figure showing the closed state of a door. It is the front view and side view of an outer door. It is XX sectional drawing in FIG. It is the front view and side view of an inner door. It is VII-VII sectional drawing in FIG. It is VIII-VIII sectional drawing in FIG. It is IX-IX sectional drawing in FIG. It is the III-III sectional view in Drawing 2, and is a figure showing the opening state of a door.

An embodiment of a sliding door type single door two door device of the present invention will be described. In the following description, the direction in which the door is opened and closed is referred to as “width direction”, the left side in the width direction in FIG. 3 is referred to as “door opening side”, and the right side is referred to as “door closing side”.
On the other hand, the direction orthogonal to the width direction is referred to as “expected direction”, the left side in FIG. 8 is referred to as “inside”, and the right side is referred to as “outside”.

  First, the structure of the airframe cover will be described with reference to FIGS. The machine body cover 1 of the machine tool shown in FIG. 1 is provided with an opening 2 for taking in and out a workpiece and performing maintenance. The opening 2 is provided with a door device and a cover so that coolant and chips do not come out of the machine. An outer door 4 and an inner door 5 that are movable in the width direction are provided on the front surface of the body cover 1, and the inner door 5 that is driven manually or by a driving device 6 and moves through the entire width section of the opening 2 is the outer door 4. The sliding door type single-open two-door device 3 that overlaps and opens inside the prospective direction is employed as a front door for loading and unloading workpieces.

A drive device 6 for automatically opening and closing the door is attached to the body cover 1. An air cylinder (not shown) is used as a drive source of the drive device 6. This air cylinder also plays a role of maintaining the closed state when the door is closed.
The front right side of the machine body cover 1 has a mounting space for an operation panel (not shown), and the left side is a storage space for the door. By adopting the sliding door type single door two door device 3, the door storage part and the operation panel interfere with each other. It is possible to reduce the dimension of the body cover 1 in the width direction.

The configuration of the embodiment of the present invention will be described first with reference to FIGS. As shown in FIGS. 4 and 8, the outer door 4 of the sliding door type single door two door device 3 includes an outer door fixing piece 13 extending upward from the upper edge portion. One inner door 5 includes an inner door fixing piece 14 extending inward from the upper edge as shown in FIGS.
The outer door 4 and the inner door 5 are movable in the width direction, with the upper portions of the door being guided and supported by guide blocks 7 and 8 and guide rails 9 and 10 which are linear motion guide mechanisms.

  The outer door guide rail 9 is attached to the upper inner wall surface 11 of the body cover 1, and the outer door guide block 7 is slidably fitted thereto. An outer door suspension member 12 that is long in the width direction is attached to the outer door guide block 7. The width of the outer door suspension member 12 is substantially equal to the length of the opening so that the inner door 5 can move the inner door guide rail 10 having a length that allows the inner door 5 to move in the entire width section of the opening 2. . FIG. 4 shows a state in which the outer door 4, the inner door guide block 8 of the inner door 5, and the guide rail 10 are attached to the outer door suspension member 12.

  An inner door guide rail 10 is attached to the outer door suspension member 12, and the inner door guide block 8 is fitted to the inner door guide rail 10 in the same manner as the outer door. An inner door suspension member 15 extending downward from the inner door guide block 8 is attached to the inner door guide block 8. An inner door fixing member 14 is screwed to the lower end of the inner door suspension member 15 and the inner door 5 is suspended.

As shown in FIGS. 4, 5, and 9, the outer door 4 has an inner surface on the inner door side of the outer door 4 in a closed state, a close contact surface 16 over substantially the entire height direction, and an inner side in the prospective direction. A seal member 17 is provided which protrudes and is pressed against the close contact surface 16 to be in close contact therewith. The seal member 17 is formed by attaching an elastic fluorine-based rubber sheet material to a long bracket 18 having an L-shaped cross section, and is screwed to an outer plate member 4 a constituting the outer door 4.
A contact member 19 that protrudes toward the inner door in the width direction is provided on the side surface of the outer door 4 on the inner door side. As shown in FIGS. 4 and 5, the abutting member 19 can be adjusted by screwing a stopper bolt 19a onto a pedestal 20 and 21 fixed at two places on the upper and lower sides of the outer door and fixing it with a nut 19b. .

As shown in FIGS. 6, 7, and 9, the inner door 5 contacts the outer surface of the inner door 5 on the outer door side over the entire area in the height direction when the door is closed. An abutting surface 22 that contacts is provided.
As shown in FIGS. 9 and 10, an urging member 24 that presses the abutting member 19 against the block 23 provided on the inner side of the body cover 1 to urge the outer door 4 in the width direction when closed. Is provided. In the present embodiment, the biasing member 24 is a plunger with a spring material 25 incorporated therein.
And the sliding door type single door two door apparatus 3 is provided with the holding means which opposes the pressing force of the plunger 24 at the time of door closing, and hold | maintains a closed state. In the present embodiment, the air cylinder (not shown) of the drive device 6 described above corresponds to the holding means 6. Or in the case of a manual door, for example, a hook as described in the door of JP-A-2009-131936 may be used.

Next, the function and effect of the embodiment of the present invention will be described.
As shown in FIG. 9, the sliding door type single door two door device configured as described above is configured so that the contact surface 22 of the inner door 5 is in close contact with the seal member 17 by the pressing force of the plunger 23 when the door is closed. It has become.
The embodiment of the present invention can reliably close the gap between the overlapping portions of the inner door 5 and the outer door 4 where the coolant is likely to leak by a simple method. Therefore, it is possible to reliably prevent the coolant from leaking from the gap between the overlapping portions of the inner door 5 and the outer door 4. Further, since the number of parts is small with a simple structure, the cost is low.

The present invention is not limited to the above-described embodiment, and can be implemented by appropriately changing a part of the configuration without departing from the gist of the invention.
For example, in the embodiment of the present invention, the plunger 23 which is the urging member is provided on the inner side of the body cover 1, but the stopper bolt 19 a which is the contact member 19 is provided on the side of the body cover 1. Also good.

DESCRIPTION OF SYMBOLS 1 Airframe cover 2 Opening part 3 Sliding door type single door two door apparatus 4 Outer door 5 Inner door 6 Driving device (holding means)
16 Contact surface 17 Seal member 19 Contact member 22 Contact surface 24 Plunger (biasing member)

Claims (3)

A door device provided in the opening of a machine tool body cover, which is provided with an inner door and an outer door that are movable in the width direction. In the sliding door type single door two door device that overlaps and opens inside the direction,
An inner surface on the inner door side of the outer door when the door is closed is provided with a close contact surface over almost the entire area in the height direction and a seal member protruding inward in the prospective direction and closely contacting the close contact surface. A contact member that protrudes toward the inner door side in the width direction is provided on the side surface on the door side, and the outer surface on the outer door side of the inner door when the door is closed is sealed over substantially the entire area in the height direction when the door is closed. While providing a contact surface that contacts the member,
The fuselage cover includes a biasing member that presses the abutting member to bias the outer door in the width direction when closed, and a holding unit that holds the closed state against the pressing force of the biasing member when the door is closed. A sliding door type single-open two-door apparatus characterized in that the contact surface of the inner door comes into close contact with the seal member by the pressing force of the urging member when the door is closed.   The sliding door type single door two door device according to claim 1, wherein the biasing member is a spring material.   3. The sliding door type single-open two-door apparatus according to claim 1, wherein the sealing member is an elastic rubber material.

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