JP6779626B2 - Shutter device - Google Patents

Description

The present invention relates to, for example, a mounted shutter device used to open and close an opening formed in a mechanical device such as a laser machine or a machining center or a machine tool such as a lathe or a milling machine.

Various openings may be formed in a machine tool such as a laser machine or a machining center or a machine tool such as a lathe or a milling machine. Such an opening is formed for the purpose of carrying a work into the mechanical device or performing maintenance inside the mechanical device. However, inside the mechanical device, a drive system for driving a head or a tool for laser machining or machining the workpiece in the XY direction or the Z direction is arranged, and spatter, chips or dust are generated through the opening. If such a substance invades the inside of the mechanical device and adheres to the drive system, accurate positioning becomes impossible. Further, in the laser processing machine, the above-mentioned dust or the like invades the inside of the processing machine and adheres to the mirror, which causes a problem such as diffused reflection of the laser light. In particular, in a fiber laser machine that has been put into practical use in recent years, when the fiber laser is scattered to the outside through the above opening, it often causes fatal injury to the operator, so that such a situation is prevented. Therefore, the fact is that a strict design is given.

Therefore, when such an opening is formed in the mechanical device, a shutter device for opening and closing the opening is arranged, and by opening the shutter device, the work can be carried into the mechanical device or maintenance work can be performed. I'm going. For example, the one disclosed in Japanese Patent Application Laid-Open No. 2007-891260 (Patent Document 1) is a door in which an opening for inserting and removing a work is formed in the ceiling of the mechanical device and the opening is automatically opened and closed. Is provided. That is, in this conventional technique, a pair of left and right doors that are swingable via support shafts are arranged in the openings formed in the ceiling, and the pair of left and right doors are turned sideways by expanding and contracting the cylinder rod of the cylinder. The opening is closed when the door is turned down, and the opening is opened when the pair of left and right doors are turned downward.

JP-A-2007-260819

However, in the prior art disclosed in Patent Document 1, when the pair of left and right doors are closed and opened, a locus that rotates about 90 degrees around the support shaft is passed, and therefore, inside the mechanical device. The space must be secured within the range of the movement locus of the pair of left and right doors, which cannot be applied to a mechanical device that cannot secure such a space, or the pair of doors according to the above configuration are arranged. If this is the case, the design of the mechanical device itself must be changed.

Therefore, the present invention has been proposed in order to solve the problems of the above-mentioned conventional techniques, and the opening formed in the mechanical device is provided without significantly changing the design of the conventional mechanical device. An object of the present invention is to provide a new shutter device that can be opened and closed.

The present invention has been proposed to solve the above problems, and the first invention (the invention according to claim 1) is a mechanical device such as a laser processing machine or a machining center or a machine tool such as a lathe or a milling machine. A shutter device that opens and closes a rectangular opening formed in the above, which has a length in the length direction of the rectangular opening and faces each other and is arranged in the width direction of the opening. A connecting member formed by connecting a plurality of fixing plates and the fixing plates facing each other so as to be able to approach and separate from each other and having peaks and valleys. A shutter-side fixing plate portion fixed to the lower end side of each of the above-mentioned fixing plates, and a closing plate portion bent from one side of the shutter-side fixing plate portion to close the opening from the tip end side to the base end side. When the shutter members are provided so that the closing plate portions adjacent to each other are partially overlapped with each other, and the respective fixing plates are extended so as to be separated by the action of an external force. When the overlapping area of the closing plate portions formed on each of the shutter members is reduced, the opening is closed, and the fixing plates are reduced so as to approach each other, the shutter members are covered with each other. The overlapping area of the formed closing plate portions is increased so as to open the opening, and the shutter member mounting plate is fixed to the lower end side of the fixing plate to form the shutter. The side fixing plate portion is detachably attached to the shutter member mounting plate, and the shutter member mounting plate is a fixed plate portion fixed to the fixing plate and one side of the fixing plate portion. It is provided with a mounting plate portion that is bent from the above, and the mounting plate portion and the shutter side fixing plate portion are engaged with a plurality of engaging holes in which engaging members are arranged, respectively. The engaged hole is relatively provided, and the shutter side fixing plate portion can be removed from the shutter member mounting plate by releasing the engaged state between the engaging member and the engaged hole. It is characterized by being made.

Further, in the second invention (the invention according to claim 2), in the first invention, the connecting member is formed of a flexible material such as a sheet or a film, and has peaks and valleys. A bellows formed alternately and made expandable by the action of the external force in a direction orthogonal to the length direction of the peaks and valleys, and having an area that closes the entire opening when it is most extended. It is characterized by being a member.

Further, in the third invention (the invention according to claim 3), in the first invention, the connecting member connects the fixing plates facing each other, and the valley portion and the left and right of the valley portion are connected to each other. It is characterized in that it is provided with mountain portions formed on both sides, and when the external force is not acting, the fixing plate and the fixing plate are urged in a direction away from each other. is there.

Further, in the fourth invention (the invention according to claim 4), in any one of the first, second or third inventions, the engaging members are opposed to each other with one and the other disk portion. One end is fixed to the center of the one disk portion and the other end is fixed to the center of the other disk portion. The engaged hole is formed in the shutter side fixing plate portion. It also has a disk portion insertion hole through which one or the other disk portion is inserted, and a shaft portion insertion hole that communicates with the disk portion insertion hole and through which the shaft portion is inserted. Therefore, a part of the disk portion insertion hole is closed in the disk portion insertion hole, and the tip side is flexed and elastically deformed in a direction away from the shutter member mounting plate by the action of an external force, and the engagement member is elastically deformed. After one or the other disk portion is inserted into the disk portion insertion hole, the shaft portion constituting the engaging member is moved while being guided by the shaft portion insertion hole, so that the tip of the disk is one of the above. It is characterized in that a stopper tongue piece that can be elastically deformed and returned to the original state faces between the portion and the other disk portion.

Further, the fifth invention (the invention according to claim 5) is the first, second, third or fourth invention in which the connecting member or the bellows member is attached to each of the fixing plates. The separation preventing member for preventing the tip end side of the closing plate portion constituting the shutter member from separating from the back surface of the closing plate portion constituting the other adjacent shutter member is fixed when the shutter member is extended. It is a feature.

Further, in the sixth invention (the invention according to claim 6), in the fifth invention, the separation prevention member is the upper fixing plate portion fixed to one side surface on the upper end side of the fixing plate and the upper fixing plate portion thereof. is bent substantially horizontally from the upper end of the plate portion, the connecting member or the lower surface at the time of the bellows member is extended in the connecting member or the top opposed to the distal end or tip-side middle portion with composed of the bellows member It is characterized in that it is provided with a separation prevention plate portion that is brought into contact with the upper surfaces of other adjacent separation prevention members by its own weight.

According to the shutter device according to the first invention (the invention according to claim 1), first, according to the shutter device according to the first invention (the invention according to claim 1), inside the mechanical device. Even when high-temperature spatter or laser light is scattered or irradiated on the shutter device, it is possible to prevent the individual shutter members from being emitted to the outside or damaging the shutter member. Further, the shutter device according to the present invention has a structure in which the opening is opened and closed by the linear motion of the shutter member, instead of a structure in which the opening is opened and closed by the rotational movement of the door as in the conventional shutter device. It is possible to attach the mechanical device of the above to the mechanical device without drastically changing the design.

Further, in the present invention, the shutter member mounting plate is fixed to the lower end side of the fixing plate, and the shutter side fixing plate portion constituting the shutter member is detachably attached to the shutter member mounting plate. Therefore, according to the shutter device according to the present invention, even if a part of each of the above shutter members is damaged or deformed due to long-term use, it is necessary to replace the entire shutter device. Only the damaged shutter member can be replaced.

Further, in the present invention, the shutter member mounting plate includes a fixing plate portion fixed to the fixing plate and a mounting plate portion bent from one side of the fixing plate portion, and the mounting plate portion and the mounting plate portion. A plurality of engaging holes in which engaging members are arranged and engaged holes with which the engaging members are engaged are relatively provided on the shutter-side fixing plate portion, and the engaging members and the engaging members are provided with each other. by releasing the engagement between the engaged holes, engagement from becoming are removable the shutter side fixing plate portion from said shutter member mounting plate, said engaging member to Hikakarigoana The shutter member can be attached to the fixing plate, and the shutter member can be removed from the fixing plate by releasing the engagement state between the engaging member and the engaged hole.

Further, according to the second invention (the invention according to claim 2), not only the closing plate portion constituting the shutter member but also the bellows member closes the opening formed in the mechanical device. Therefore, according to the shutter device, it is possible to prevent the possibility of dust entering the mechanical device and the dust or the like being discharged / discharged from the mechanical device to the outside.

Further, according to the third invention (the invention according to claim 3), when opening the opening formed in the mechanical device, a predetermined force against the urging force is required, but on the contrary, the above-mentioned When closing the opening, the urging force (elastic force) makes it possible to perform it with an extremely small force (or without an external force).

Further, according to the fourth invention (the invention according to claim 4), once the shutter member is attached to the fixing plate or the shutter member mounting plate, the disc insertion hole on the shutter member side is provided by the stopper tongue piece. Because the shutter member is closed, the shutter member does not fall off from the fixing plate or the shutter member mounting plate, and the shutter member rattles or the like during opening / closing work of the shutter device or driving of the mechanical device. The generation of abnormal noise is suppressed.

Further, according to the fifth invention (the invention according to claim 5) and the sixth invention (the invention according to claim 6), the high temperature melted from the gap between the closing plate portions adjacent to each other is high. It is possible to prevent the connecting member or the bellows member from being damaged or burned due to the intrusion of sputtered or diffusely reflected laser light.

It is a perspective view which shows the shutter device separated from the mechanical device. It is sectional drawing which shows the basic structure of a shutter device. It is a perspective view which shows the appearance of the left side of a left shutter device enlarged. It is a perspective view which shows the appearance of the right side of the left shutter device and the left side of a central shutter device in an enlarged manner. It is a perspective view which shows the appearance of the right side of a central shutter device and the left side of a right shutter device in an enlarged manner. It is a perspective view which shows the appearance of the right side of a right shutter device enlarged. It is an enlarged perspective view which shows the appearance of the left shutter device in the state which removed the 1st connecting plate. It is an enlarged perspective view which shows the appearance of the central shutter device in the state where the 1st connecting plate and the 2nd connecting plate are removed. It is an enlarged perspective view which shows the appearance of the right shutter device in the state which removed the 2nd connecting plate. It is an exploded perspective view of the central shutter device. It is a front view of the shutter device. It is a perspective view which shows the main part of the mounting structure of a mounting plate and a shutter member. It is a top view which shows the shutter device which concerns on 2nd Embodiment. FIG. 3 is an enlarged plan view showing the configuration on the left side of the shutter device shown in FIG. 13. FIG. 3 is an enlarged plan view showing the configuration on the right side of the shutter device shown in FIG. It is sectional drawing which shows the state in which the shutter device shown in FIG. 13 is most extended. It is sectional drawing which shows the shutter apparatus shown in FIG. 16 enlarged. It is a front view of the shutter device shown in FIG. The left connecting member (right connecting member) is shown, (A) is a plan view thereof, (B) is a front view thereof, and (C) is a perspective view thereof.

Hereinafter, the shutter device according to the best mode for carrying out the present invention (the shutter device according to the first embodiment) will be described in detail with reference to the drawings.

As shown in FIG. 1, the shutter device 1 according to the first embodiment is arranged to open and close the rectangular opening 2a formed in the top plate 2 of the fiber laser machining machine. On the top plate 2, on the left side of the opening 2a, a left guide rail 3 having a length in the same direction as the width direction of the opening 2a is arranged, and on the right side of the opening 2a, the opening 2a A right guide rail 4 having a length in the same direction as the width direction of the laser beam 4 is arranged. Then, as will be described later, the shutter device 1 according to this embodiment opens and closes the opening 2a while being guided by the left guide rail 3 and the right guide rail 4.

The shutter device 1 has a left shutter device 5 arranged on the leftmost side, a central shutter device 6 in which the left side is connected to the right side of the left shutter device 5, and a left side on the right side of the central shutter device 6. It is composed of three shutter devices, which are connected to the right shutter device 7. Therefore, the basic configurations of the left shutter device 5, the center shutter device 6, and the right shutter device 7 (hereinafter, these are referred to as individual shutter devices 10) will be described below.

As shown in FIG. 2, the individual shutter device 10 has a bellows member 11, a plurality of fixing plates 12 fixed to the bellows member 11, and the bellows member 11 between the fixing plates 12. It is composed of a shutter member mounting plate 13 sandwiched and fixed, and a shutter member 14 fixed to the shutter member mounting plate 13. The bellows member 11 is made of flame-retardant sheet-shaped synthetic leather, and peaks 11a and valleys 11b are alternately formed in the width direction. Therefore, the bellows member 11 is stretchable via the mountain portion 11a and the valley portion 11b. As will be described later, the bellows member 11 has a larger area than the entire area of the opening 2a when the opening 2a is closed, and is a connecting member constituting the present invention. Further, each of the fixing plates 12 is formed into a plate shape by using synthetic resin, and the lower end side of the fixing plate 12 and the lower end side of the bottom surface and the back surface of the fixing plate 12 are the bellows members. It is heat-welded to 11. Further, the shutter member mounting plate 13 has an obtuse angle shape from the fixed plate portion 13a fixed by sandwiching the fixing plate 12 and the bellows member 11 on the lower end side of the fixing plate 12, and the lower end of the fixing plate portion 13a. A mounting plate portion 13b, which is bent via the bent portion of the above, is provided. The base end side (shutter side fixing plate portion 14a) of each of the shutter members 14 is detachably attached to the mounting plate portion 13b via the engaging member 18. The specific configuration of the engaging member 18 and the configurations of the mounting plate portion 13b and the shutter side fixing plate portion 14a will be described in detail later. The shutter member 14 attached to the mounting plate portion 13b is bent from the shutter side fixing plate portion 14a and one side of the shutter side fixing plate portion 14a via an obtuse angle bent portion. The intermediate plate portion 14b, the main plate portion 14c bent from one side of the intermediate plate portion 14b via an obtuse-angled bent portion, and the tip side plate bent slightly upward from one side of the main plate portion 14c. It is composed of a part 14d. The intermediate plate portion 14b, the main plate portion 14c, and the tip side plate portion 14d are portions for closing the opening 2a as described later, and are closing plate portions constituting the present invention.

Further, a separation prevention member 20 is fixed to the upper end side (left side or right side) of each of the above fixing plates 12. The separation prevention member 20 is the upper end side of the fixing plate 12, and the upper fixing plate portion 20a fixed by the caulking member 22 on the same side as the side where the shutter member mounting plate 13 is fixed, and the upper fixing plate portion 20a. It is bent at a substantially right angle (almost horizontal) from the upper end of the plate portion 20a, and most of the lower surface is composed of a separation prevention plate portion 20b facing the upper surface of the bellows member 11. The tip-side halfway portion of the separation prevention plate portion 20b is inclined downward via an obtuse-angled bent portion.

Further, in the individual shutter device 10 according to the first embodiment, the shutter member mounting plate 13, the shutter member 14, and the separation prevention member 20 are made of a metal such as steel or stainless steel, respectively. At the same time, in a natural state, the tip of the tip side plate portion 14d constituting the shutter member and the tip of the separation prevention plate portion 20b constituting the separation prevention member 20 are urged in a direction approaching each other.

Therefore, when a force acts on the state in which each shutter device 10 is extended from the contracted state by an operator or a drive device (not shown), the bellows member 11 is subjected to the adjacent peaks 11a and valleys 11b. The shutter side fixing plate portions 14a constituting the adjacent shutter members 14 move away from each other and extend, and the shutter side fixing plate portions 14a forming the adjacent shutter members 14 are separated from each other and are intermediate to form the adjacent shutter members 14. The overlapping range (degree) of the plate portion 14b, the main plate portion 14c, and the tip side plate portion 14d gradually decreases, and the tip of the tip side plate portion 14d constituting the specific shutter member 14 is adjacent to the specific shutter member 14. It is located on the lower surface of the intermediate plate portion 14b constituting the other shutter member 14. Further, the separation prevention plate portions 20b constituting the separation prevention member 20 adjacent to each other have a large overlap range (degree) with each other in a reduced state, and gradually overlap as the shutter device 10 is extended. The range (degree) gradually decreases, and finally (when most extended), as shown in FIG. 2, the tip of the specific separation prevention plate portion 20b is the specific separation prevention plate portion 20b. It is located on the base end side of another separation prevention plate portion 20b adjacent to the above. Then, in this embodiment, as described above, in the natural state, the tip of the tip side plate portion 14d constituting the shutter member 14 and the tip of the separation prevention plate portion 20b constituting the separation prevention member 20 are Since they are urged in the direction of approaching each other, as described above, when the shutter device 10 is most extended, the entire shutter member 14 is urged upward, and as a result, a specific shutter member. The tip of the tip side plate portion 14d constituting the 14 comes into contact with the lower surface of the intermediate plate portion 14b constituting another shutter member 14 adjacent to the specific shutter member 14. Further, when a force for rotating the shutter member 14 in the clockwise direction in FIG. 2 acts due to its own weight, and a force for rotating the fixing plate 12 in the same clockwise direction acts with this action. Even if there is, the tip of the separation prevention plate portion 20b constituting the separation prevention member 20 comes into contact with the upper surface of the other separation prevention plate portions 20b adjacent to each other. Therefore, according to the shutter device 10 according to this embodiment, the shutter member 14 and the shutter member 14 are in the most contracted state, the most extended state shown in FIG. 2, and the state in the middle thereof. There is no gap between them.

Hereinafter, based on the basic configuration of the shutter device 10, the left shutter device 5, the center shutter device 6, and the right shutter device 7 that constitute the shutter device 1 described above will be described again.

As shown in FIG. 1, each of the fixing plates 12 constituting the left shutter device 5, the center shutter device 6, and the right shutter device 7 has a notch at the upper end thereof that shortens the height (width) of the fixing plate 12. A portion 12a is formed, and as shown in FIG. 3 or FIG. 4 showing the left shutter device 5, the notch portions 12a are formed on both the left and right sides of the fixing plate 12 constituting the left shutter device 5. The left long portion 12b and the right long portion 12c, each of which has a long height (width), are formed. Further, in the central shutter device 6, as shown in FIG. 4 or 5, the height (width) of the left and right sides of the fixing plate 12 is longer than that of the portion where the notch portion 12a is formed. The left long portion 12b and the right long portion 12c are formed respectively. Further, in the right shutter device 7, as shown in FIG. 5 or 6, the height (width) of the left and right sides of the fixing plate 12 is longer than that of the portion where the notch portion 12a is formed. The left long portion 12b and the right long portion 12c are formed respectively.

Then, as shown in FIG. 1 or 4, the right side of the left shutter device 5 and the left side of the central shutter device 6 are right lengths formed on the fixed plates 12 constituting the left shutter device 5. The scale portion 12c and the left long portion 12b formed on each of the fixing plates 12 constituting the central shutter device 6 are detachably connected by a first connecting plate 24, respectively. Further, as shown in FIG. 1 or 5, the right side of the central shutter device 6 and the left side of the right shutter device 7 are right lengths formed on each of the fixing plates 12 constituting the central shutter device 6. The scale portion 12c and the left long portion 12b formed on each of the fixing plates 12 constituting the right shutter device 7 are detachably connected by a second connecting plate 25, respectively. The first connecting plate 24 and the second connecting plate 25 are arranged on the front side and the back side of each of the fixing plates 12, respectively, and the first connecting plate 24, 24 or the second connecting plate 25 , 25 sandwiches the fixing plate 12.

The left shutter device 5 and the central shutter device 6 are connected by the first connecting plate 24, and the central shutter device 6 and the right shutter device 7 are connected by the second connecting plate 25. More specifically, as shown in FIG. 7, the right end of the right long portion 12c of the fixing plate 12 constituting the left shutter device 5 is recessed to the left side of the right end of the right long portion 12c. While the recess 12d is formed, as shown in FIG. 8 or 10, the left long plate portion 12b is located at the left end of the left long plate portion 12b of the fixing plate 12 constituting the central shutter device 6. A protruding plate portion 12e is formed so as to project to the left side of the left end of the above. The fixed plate 12 constituting the left shutter device 5 and the fixing plate 12 constituting the central shutter device 6 are formed by the first connecting plates 24 and 24 on the front side and the back side, whereby the left shutter device is formed. The protruding plate portion 12e formed in the fixing plate 12 constituting the central shutter device 6 is connected in a state of being fitted into the recess 12d formed in the fixing plate 12 constituting the central shutter device 6. Further, as shown in FIG. 8 or 10, the right end of the right long portion 12c formed on the fixing plate 12 constituting the central shutter device 6 is recessed to the left side of the right end of the right long portion 12c. While the recess 12d is formed, as shown in FIG. 9, the left end of the left long plate portion 12b of the fixed plate 12 constituting the right shutter device 7 is at the left end of the left long plate portion 12b. A protruding plate portion 12e is formed so as to project to the left side of the above. Then, the fixing plate 12 constituting the central shutter device 6 and the fixing plate 12 constituting the right shutter device 7 are formed by the second connecting plates 25 and 25 on the front side and the back side, whereby the central shutter device is formed. The protruding plate portion 12e formed in the fixing plate 12 constituting the right shutter device 7 is connected in a fitted state in the recess 12d formed in the fixing plate 12 constituting the right shutter device 7.

Further, the separation prevention member 20 formed in the left shutter device 5 constituting the individual shutter device 10 described above as a basic configuration is as shown in FIG. 1 or 3 in the left shutter device 5. , It is fixed to the left long portion 12b of the fixing plate 12 constituting the left shutter device 5. That is, in the left shutter device 5, each upper fixing plate portion 20a is fixed to the upper end side of the front surface of the left long portion 12b constituting each of the fixing plates 12. As described above, the separation prevention member 20 is bent substantially at right angles from the upper fixing plate portion 20a fixed to the fixing plate 12 and the upper end of the upper fixing plate portion 20a (almost horizontally). Most of the lower surface of the bellows member 11 is composed of a separation preventing plate portion 20b facing the upper surface of the bellows member 11, but before being bent in this way, it is a flat plate (not shown). There, U-shaped slits are formed on both the left and right sides of the middle part on one side of the plate body, and a holding plate portion (not shown) is formed by bending the portion surrounded by the slits, and the upper fixing plate is formed. The upper end side of the fixing plate 12 is sandwiched between the portion 20a and the holding plate portion, and is fixed to the fixing plate 12 by the caulking material 22 described above.

Further, the separation prevention member 20 described above is, in the central shutter device 6, a notch portion 12a constituting the central shutter device 6, as shown in FIG. 1 or FIG. 4 or FIG. 5 or FIG. It is fixed at two locations, one near the left long portion 12b and the other near the right long portion 12c. Since the configuration and fixing structure of the separation prevention member 20 fixed to each of these two locations are the same as those fixed to the left shutter device 5, the description thereof will be omitted. Further, in the right shutter device 7, the separation prevention member 20 described above is fixed to the right elongated portion 12c of the fixing plate 12 constituting the right shutter device 7, as shown in FIG. 1 or FIG. Has been done.

Further, a square notch (not shown) having an open lower portion is formed at the lower end of the left elongated plate portion 12b formed on each of the fixing plates 12 constituting the left shutter device 5, and is formed in FIG. 3 or FIG. As shown in the above, a left slider 27 having a notch 27a having the same shape as the notch is fixed to the front surface of the left elongated plate portion 12b. Further, at the lower end of the right elongated portion 12c formed on each of the fixing plates 12 constituting the right shutter device 7, a square notch (not shown) having an open lower portion is formed, and FIGS. Alternatively, as shown in FIG. 11, a right slider 28 having a notch 28a having the same shape as the notch is fixed to the front surface of the right elongated portion 12c. As shown in FIG. 11, the left slider 27 is a member that is fitted and inserted into the left guide rail 3 and guided by the left guide rail 3, while the right slider 28 is outside the right guide rail 4. It is a member that is fitted and inserted and guided by the right guide rail 4.

Next, a mounting structure of the shutter member mounting plate 13 (mounting plate portion 13b) fixed to the left shutter device 5, the central shutter device 6, and the right shutter device 7 and the shutter member 14 will be described. As shown in FIG. 12, a mounting plate portion 13b is formed on each of the shutter member mounting plates 13, and the mounting plate portion 13b communicates with the disk portion insertion hole 13c and the disk portion insertion hole 13c. At the same time, a shaft portion insertion hole 13d through which the shaft portion 18c formed in the engaging member 18 described later is inserted is formed. The disk portion insertion hole 13c and the shaft portion insertion hole 13d are engagement member mounting holes constituting the present invention. On the other hand, the shutter-side fixing plate portion 14a formed on the shutter member 14 has a shutter-side disk portion insertion hole 14e formed at a position corresponding to the disk portion insertion hole 13c and a shutter-side disk portion. A shaft portion insertion hole 14f on the shutter side is formed so as to communicate with the insertion hole and through which the shaft portion 18c formed in the engaging member 18 described later is inserted. The disk portion insertion hole 14e and the shaft portion insertion hole 14f on the shutter side are engaged holes constituting the present invention. Then, a part of the disk portion insertion hole 13c on the shutter side is closed in the disk portion insertion hole 13c on the shutter side, and the tip side is separated from the mounting plate portion 13b by the action of an external force such as a flat-blade screwdriver. A stopper tongue piece 14g that bends and elastically deforms faces.

Further, as shown in FIG. 12, the engaging member 18 includes one disk portion 18a formed in a disk shape and the other disk portion 18b formed in the same shape as the one disk portion 18a. It is composed of a shaft portion 18c connected to each other at the center of the one disk portion 18a and the other disk portion 18b.

Then, before the shutter member 14 is attached to the mounting plate portion 13b, the engaging member 18 has the shaft portion 18c after the one disk portion 18a is inserted into the disk portion insertion hole 13c. It is inserted into the shaft portion insertion hole 13d. In this state, when the other disk portion 18b is pressed into the disk portion insertion hole 14e on the shutter side constituting the shutter member 14, the stopper tongue piece 14g is elastically deformed to the outside of the shutter member 14. When the other disk portion 18b is inserted into the disk portion insertion hole 14e on the shutter side and the engaging member 18 is moved into the shaft portion insertion hole 14f, the stopper tongue piece 14g is elastically deformed. Then, the original state is restored, and the tip of the restored stopper tongue piece 14g faces between the one disk portion 18a and the other disk portion 18b, that is, the shaft portion 18c.

Therefore, even when the shutter member 14 or the engaging member 18 moves relatively in the left-right direction, the tip of the stopper tongue piece 14g comes into contact with the shaft portion 18c of the engaging member 18. Therefore, the shutter member 14 does not fall off from the mounting plate portion 13b. When each of the shutter members 14 is damaged and replaced, the stopper tongue piece 14 g is elastically deformed by, for example, the tip of a flat-blade screwdriver (not shown) to insert the disk portion on the shutter member 14 side. The shutter member 14 may be removed by separating it from the inside of the hole 14e and pulling out the other disk portion 18b constituting the engaging member 18 from the inside of the disk portion insertion hole 14e on the shutter member 14 side.

As is clear from the above description, according to the shutter device 1 according to the above embodiment, the opening 2a double formed in the mechanical device by both the bellows member 11 and each of the shutter members 14 as a whole. Is blocked, so even if high-temperature spatter or laser light is scattered or irradiated on the shutter device 1 inside the mechanical device, it may be emitted to the outside by the individual shutter members 14. The shutter member 14 can be prevented from being damaged, and dust and the like from the outside can be prevented from entering the inside from the outside of the mechanical device by the bellows member 11, and dust and the like can be prevented from entering the inside from the outside of the mechanical device. And foreign matter can be prevented from entering. Further, in the shutter device 1, the expansion / contraction direction of the bellows member 11 is operated / operated in the opening / closing direction, that is, the length direction or the width direction of the opening 2a formed in the mechanical device. As described above, since the movement locus is not provided inside the mechanical device, according to the shutter device 1 according to this embodiment, the mechanical device is not significantly redesigned and the existing mechanical device is not changed. It can be easily installed.

Further, according to the shutter device 1 according to this embodiment, even if a part of the individual shutter members 14 is damaged or deformed due to long-term use, the entire shutter device 1 can be used. There is no need to replace it, only the damaged shutter member 14 can be replaced, and once the shutter member 14 is attached to the mounting plate portion 13b, the shutter member 14 is provided by the stopper tongue piece 14g. Since the disk portion insertion hole 14e on the side is closed, the shutter member 14 does not fall off from the mounting plate portion 13b, and the shutter member is used during the opening / closing work of the shutter device 1 or when the mechanical device is driven. No abnormal noise is generated due to rattling or the like of 14.

Further, in the shutter device 1 according to this embodiment, since the separation prevention member 20 is arranged, each shutter member 14 is separated from the back surface of another shutter member 14 whose tip side is adjacent due to its own weight. Then, high-temperature sputter or the like melted from the separated gaps invades from the inside or inside of the mechanical device, or diffusely reflected laser light invades through the gaps and damages or burns the bellows member 11. It is possible to prevent it from happening.

Next, the shutter device 51 according to the second embodiment of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 13, the shutter device 51 according to the second embodiment has a length in the left-right direction, and is formed on the top plate 2 of the fiber laser machining machine shown in FIG. It is arranged to open and close the rectangular opening 2a. The shutter device 51 includes a plurality of fixing plates 52 formed to be slightly longer than the length of the opening 2a, a left side connecting member 53 that connects these fixing plates 52 to each other on the left side, and the fixing plate 52. The right side connecting member 54 is provided on the right side, and the shutter member 55 is detachably attached to each of the above-mentioned fixing plates 52.

Each of the above fixing plates 52 is in a state of being upright with respect to the top plate 2 shown in FIG. 1, and as shown in FIG. 16, each of the upper ends is curved in a dogleg shape. A bent piece 52a for prevention is formed. Further, a square notch (not shown) having an open lower portion is formed at the lower left end of the fixing plate 52, and as shown in FIG. 18, the front surface of the fixing plate 52 is the same as the notch. The left slider 57 in which the notch 57a of the shape is formed is fixed. Further, a square notch (not shown) having an open lower portion is formed at the lower right end of the fixing plate 52, and a notch 58a having the same shape as the notch is formed on the front surface of the fixing plate 52. The right slider 58 is fixed. As shown in FIG. 11, the left slider 57 is a member that is fitted and inserted into the left guide rail 3 and guided by the left guide rail 3, while the right slider 58 is outside the right guide rail 4. It is a member that is fitted and inserted and guided by the right guide rail 4.

Further, the left side connecting member 53 and the right side connecting member 54 are each formed into the same shape, and as shown in FIGS. 13, 14 or 15, the fixing plates 52 facing each other (hereinafter, hereinafter). One of the members facing each other is referred to as one fixing plate 52, and the other is referred to as the other fixing plate 52). The left side connecting member 53 and the right side connecting member 54 are each molded of resin, and as shown in FIG. 19, one fixing plate portion fixed to the one fixing plate 52 facing each other. It includes 53a (54a) and the other fixing plate portion 53b (54b) fixed to the other fixing plate 52. A plurality of insertion holes (reference numerals are omitted) into which fastening members such as screws or rivets to be fixed to the fixing plate 52 are inserted into the one and the other fixing plate portions 53a (54a) and 53b (54b), respectively. Is formed.

Further, the left side connecting member 53 and the right side connecting member 54 have one fixed plate via one mountain portion 53c (54c) formed on the upper end of the one fixing plate portion 53a (54a) on one side. One inclined surface portion 53e (54e) continuous with the portion 53a (54a) and having a valley portion 53d (54d) on the other side, and one side inclined via the valley portion 53d (54d). The other inclined surface portion 53g (54g) which is continuous with the surface portion 53e (54e) and is continuous with the other fixing plate portion 53b (54b) via the other mountain portion 53f (54f) on the other side is provided. ing. Further, the one fixing plate portion 53a (54a) and the other fixing plate portion 53b (54b) are connected to each other on both sides, and the one inclined surface portion 53e (54e) and the other inclined surface portion 53g ( The length with 54g) is shorter than the length of the one fixing plate portion 53a (54a) and the other fixing plate portion 53b (54b). Therefore, the one fixing plate portion 53a (54a) and the other fixing plate portion 53b (54b) are curved as shown in FIGS. 19A or 19B in a state where no external force is applied. When the one fixing plate 52 facing the surface and the other fixing plate 52 approach each other, the curved one fixing plate portion 53a (54a) and the other fixing plate portion 53b (54b) are bent and become flat. Elastically deforms to a close state.

Further, as shown in FIG. 17 or 18, a lower end side bent portion 52b is provided between the lower ends of the respective fixing plates 52 and the portions where the left slider 57 and the right slider 58 are fixed. A shutter member mounting plate portion 52c is formed therethrough. The shutter member mounting plate portion 52c is inclined at a predetermined obtuse angle with the main plate portion (reference numeral is omitted) of the upright fixed plate 52. A shutter member 55 constituting the present invention is detachably attached to each shutter member mounting plate portion 52c. The shutter member 55 is an intermediate plate formed by bending from one side of the shutter side fixing plate portion 55a attached to the shutter member mounting portion 52c and the shutter side fixing plate portion 55a via an obtuse angle bent portion. The main plate portion 55b bent from one side of the intermediate plate portion 55b via an obtuse-angled bent portion, and the tip side plate portion 55d bent slightly upward from one side of the main plate portion 55c. It is composed of and. The intermediate plate portion 55b, the main plate portion 55c, and the tip side plate portion 55d are portions for closing the opening 2a as described later, and are closing plate portions constituting the present invention.

The shutter member 55 is detachably attached to the fixing plate 52 (the shutter member attachment plate portion 52c formed on the fixed plate 52), and the specific attachment structure thereof and the attachment / detachment structure of the shutter member 55 are attached. Is the same as the shutter device 1 according to the first embodiment described above, and thus the description thereof will be omitted.

Further, in the shutter device 51 according to the second embodiment, the space limiting member 61 is fixed to the fixing plate 52 and the fixing plate 52 facing each other as shown in FIGS. 13, 14 or 15. Has been done. The spacing regulating member 61 is integrally molded of resin, and one end side is fixed to the facing surface of one fixing plate 52 facing each other, and the other end side faces the one fixing plate 52. It is fixed to the opposite surface of the other fixing plate 52, and a bent portion 61a is formed in the center. Then, when the one fixing plate 52 and the other fixing plate 52 are close to each other (when the shutter device 51 is reduced), the interval regulating member 61 is reduced, and conversely, the one fixing plate is reduced. When the 52 and the other fixing plate 52 are separated from each other (when the shutter device 51 is extended), these interval regulating members 61 are extended and a force that extends beyond the length of the interval regulating member 61. Is regulated to be further extended even if it acts. As shown in FIG. 16, the length of the limit at which each of the above-mentioned spacing regulating members 61 can be extended (the limit at which one and the other fixing plates 52 and 52 can be separated) constitutes the adjacent shutter members 55. It is said that the intermediate plate portion 55b as the closing plate portion and the tip side plate portion 55d correspond to the limit value at which they can overlap vertically. In other words, when the shutter device 51 is most extended by the interval regulating member 61 (when the opening 2a is closed by the shutter device 51), the closing plate portions of the adjacent shutter members 55 move up and down. It does not overlap with the shutter, and the risk of separation is prevented.

Further, according to the shutter device 51 according to the second embodiment, as in the shutter device 1 according to the first embodiment, the existing mechanical device is not significantly redesigned. It becomes possible to easily attach to the. Further, according to the shutter device 51 according to the second embodiment, even if a part of the individual shutter members 55 is damaged or deformed due to long-term use, this shutter device It is not necessary to replace the entire 51, and only the damaged shutter member 55 can be replaced.

1 Shutter device 2 Top plate 2a Opening 3 Left guide rail 4 Right guide rail 5 Left shutter device 6 Central shutter device 7 Right shutter device 11 Bellows member 11a Mountain part 11b Valley part 12 Fixed plate 13 Shutter member mounting plate 13a Fixed plate part 13b Mounting plate part 13c Disc part insertion hole 13d Shaft part insertion hole 14 Shutter member 14a Shutter side fixing plate part 14e Shutter side disk part insertion hole 14f Shutter side shaft part insertion hole 14g Stopper tongue piece 18 Engagement member 18a One Disk 18b The other disk 18c Shaft 20 Separation prevention member 20a Upper fixing plate 20b Separation prevention plate 24 First connecting plate 25 Second connecting plate 51 Shutter device 52 Fixed plate 52c Shutter member mounting plate 53 Left side Connection member 53c One mountain part 53d Valley part 53f The other mountain part 54 Right side connection member 54c One mountain part 54d Valley part 54f The other mountain part 55 Shutter member 55a Shutter side fixing plate part 55b Intermediate plate part 55c Main plate part 55d Tip Side plate 61 Separation control member

Claims (6)

A shutter device that opens and closes a rectangular opening formed in a mechanical device such as a laser machine or a machining center or a machine tool such as a lathe or a milling machine.
A plurality of fixing plates having lengths in the length direction of the rectangular opening and facing each other and arranged in the width direction of the opening, respectively.
A connecting member formed by connecting the fixing plates so that the fixing plates facing each other can approach and separate from each other and having a mountain portion and a valley portion and being expandable and contractible.
It has a shutter-side fixing plate portion fixed to the lower end side of each of the above-mentioned fixing plates, and a closing plate portion that is bent from one side of the shutter-side fixing plate portion to close the opening from the tip end side to the base end side. A shutter member is provided so that the closing plates adjacent to each other are partially overlapped with each other.
When the fixing plates are extended so as to be separated by the action of an external force, the overlapping area of the closing plate portions formed on each of the shutter members is reduced, the opening is closed, and the opening is closed. When the fixing plates are reduced so as to approach each other, the overlapping area of the closing plate portions formed on each of the shutter members increases, and the opening is opened.
A shutter member mounting plate is fixed to the lower end side of the fixing plate, and the shutter side fixing plate portion constituting the shutter member is detachably attached to the shutter member mounting plate.
Further, the shutter member mounting plate includes a fixing plate portion fixed to the fixing plate and a mounting plate portion bent from one side of the fixing plate portion, and the mounting plate portion and the shutter side fixing plate are provided. A plurality of engaging holes in which engaging members are arranged and engaged holes with which the engaging members are engaged are relatively provided in the portion, and the engaging members and the engaged members are engaged with each other. A shutter device characterized in that the shutter side fixing plate portion can be removed from the shutter member mounting plate by releasing the engagement state with the hole . The connecting member is formed of a flexible material such as a sheet or a film, and peaks and valleys are alternately formed, and the action of the external force acts in a direction orthogonal to the length direction of the peaks and valleys. The shutter device according to claim 1, wherein the shutter device is made expandable by means of a bellows member and has an area for closing the entire opening when the shutter is most extended. The connecting member connects the fixing plates facing each other, and includes a valley portion and mountain portions formed on both left and right sides of the valley portion, and when the external force is not acting. The shutter device according to claim 1, wherein the fixing plate and the fixing plate are urged in a direction in which they are separated from each other. The engaging members include one and the other disk portions facing each other, and a shaft portion having one end fixed to the center of the one disk portion and the other end fixed to the center of the other disk portion. With
The engaged hole is formed in the shutter-side fixing plate portion, and is communicated with the disk portion insertion hole through which one or the other disk portion is inserted and the disk portion insertion hole and the shaft. It has a shaft part insertion hole through which the part is inserted.
A part of the disk portion insertion hole is closed in the disk portion insertion hole, and the tip side is flexed and elastically deformed in a direction away from the shutter member mounting plate by the action of an external force, and also constitutes the engagement member. After one or the other disk portion is inserted into the disk portion insertion hole, the shaft portion constituting the engaging member is moved while being guided by the shaft portion insertion hole, so that the tip thereof becomes the one disk portion. The shutter device according to claim 1, 2, or 3, wherein a stopper tongue piece that can be elastically deformed and returned to the original state faces the other disk portion. When the connecting member or the bellows member is extended, the tip end side of the closing plate portion constituting the shutter member is separated from the back surface of the closing plate portion forming another adjacent shutter member. The shutter device according to any one of claims 1, 2, 3 or 4, wherein a separation prevention member for preventing the shutter from being formed is fixed. The separation prevention member is bent substantially horizontally from the upper fixing plate portion fixed to one side surface on the upper end side of the fixing plate and the upper end of the upper fixing plate portion, and the connecting member or the bellows member is extended. bottom surface and said connecting member or tip or tip-side middle portion with formed by the upper surface and the opposite of the bellows member is spaced prevention plate portion made in contact by its own weight on the upper surface of the other spaced-preventing member adjacent at the time was, 5. The shutter device according to claim 5, wherein the shutter device is provided with.