JP4758149B2 - Shutter device for machine tool - Google Patents

Description

  The present invention relates to a shutter device for a machine tool.

  In general, a bed of a machine tool is provided with a protective cover device so that coolant and chips are not scattered when a workpiece is machined by a tool supported on a work table and mounted on a spindle device of a processing machine body. It is installed. An opening for performing maintenance and inspection work on the machine tool is formed on the front side wall surface of the protective cover device, and a door is attached to the opening so as to be opened and closed. In addition, openings for carrying in and carrying out the work are provided in the left and right wall surfaces of the protective cover device, and both the openings are opened and closed by a lifting shutter.

  The coolant splashed during the machining of the workpiece adheres to the inner surface of the shutter of the protective cover device. This coolant flows down along the inner surface and is dropped downward from the lower edge of the shutter. For this reason, the coolant that is dropped from the lower edge of the shutter when the operator enters the protective cover device through the opening with the shutter opened to take out the workpiece and inspect the workpiece. There was a problem of adhering to the operator's arm.

  In order to solve the above problem, conventionally, there is a shutter device in which the lower end edge of the shutter is formed in an inclined state to prevent coolant or chips dripped from the lower end edge of the shutter from adhering to the operator's arm. Proposed. There has also been proposed a shutter device in which a collar is attached and fixed to the inner lower end of the shutter.

  However, in the former case, the lower edge of the shutter is inclined so that when the shutter is opened, the droplets attached to the inside of the shutter flow to the shutter end so that the coolant is not dropped on the operator's arm. It is necessary to set a large inclination angle, and to set the inclination angle to an appropriate angle so that the lower end edge of the shutter is in an inclined state. There is a problem that it is necessary to set a long time, a space for installing the shutter and its raising / lowering drive mechanism is increased, and the size of the protective cover device is increased.

Further, the shutter having the latter scissors has a problem that the coolant adheres to the scissors themselves, and the coolant is dripped and adheres to the operator's arm or the like.
The present invention eliminates the problems associated with the conventional saddle-type shutter device and can properly collect droplets such as water droplets and oil droplets that generate coolant. It is an object of the present invention to provide a shutter device for a machine tool that can prevent droplets from adhering to the surface.

In order to solve the above-mentioned problems, the invention according to claim 1 is provided with an opening for carrying in or out a workpiece with respect to a protective cover for protecting the work table of the machine tool, and the opening is opened or lowered by a lifting operation. A shutter that closes is mounted, and a bag that collects water droplets or oil droplets or the like is rotatably mounted on the lower end of the outer surface of the shutter by a hinge mechanism, and when the opening is opened by the shutter, the bottle pivots switched droplet receiving position for receiving the bottom of the shutter, the outer surface of the entire該樋 from the droplet receiving position by rotating the trough in a state where the opening is closed by the shutter the shutter The gist of the present invention is to provide hook position switching means for switching to an open position held on the side .

  According to a second aspect of the present invention, in the first aspect, the collar is mounted in a lateral direction so as to be rotatable around a horizontal axis at a lower end portion of the shutter, and the shutter is disposed between the protective cover and the collar. Is provided with a first position switching mechanism for switching the eyelid from the open position to the droplet receiving position when the shutter is fully opened, and a second position switching mechanism for switching the eyelid from the droplet receiving position to the open position when the shutter is closed. The gist is that a position switching mechanism is provided.

  According to a third aspect of the present invention, in the second aspect of the present invention, the first position switching mechanism includes a switching piece provided at an end portion of the bag, a final stroke attached to the protective cover, and the shutter being raised. And a first position restricting member that switches the ridge from the open position to the droplet receiving position by relatively pushing the switching piece, and the second position switching mechanism is provided at the end of the ridge. And a second position that is attached to the other surface of the protective cover and switches the ridge from the droplet receiving position to the open position by relatively pushing the switching piece in a stroke in which the shutter is lowered. The gist of the invention is that it is constituted by a regulating member.

  According to a fourth aspect of the present invention, in the protective cover according to any one of the first to third aspects, the protective cover may be configured to drop droplets dropped from the ridge while the ridge is switched to the open position. The gist of the invention is that a shooter is provided for guiding the inside.

  According to the first aspect of the present invention, a droplet collecting basket is attached to the lower end portion of the shutter, and when the shutter is opened, the bottle is switched to the droplet receiving position, and the shutter is closed, A heel position switching means for switching the heel to an open position outside the protective cover is provided. For this reason, in the open state of the shutter, it is possible to collect droplets such as water droplets and oil droplets that adhere to the shutter and generate dripping coolant with a scissors. It is possible to prevent the dropped liquid droplets from adhering to the arm when taking out and inspecting.

  On the other hand, during processing of the workpiece, the shutter is switched to the closed state and the heel is switched to the open position outside the protective cover device, so that droplets such as water droplets and oil droplets adhere to the heel during the processing of the workpiece. Never do. Therefore, when the shutter is opened and the heel is switched to the droplet receiving position, no droplet is dropped from the heel, and the droplet is dropped and attached to the operator when the shutter is opened. Can be prevented.

  According to the second aspect of the present invention, the heel is switched to the droplet receiving position inside the protective cover device in a state where the shutter is opened by the first position switching mechanism, and the second position switching mechanism With the shutter closed, the bag is switched to the open position outside the protective cover device.

  According to the third aspect of the present invention, since the eaves are switched between the droplet receiving position and the open position by using the lifting and lowering operation of the shutter, it is not necessary to use a dedicated power source, and the structure is simplified. Thus, the manufacturing and assembling work can be easily performed and the cost can be reduced.

  According to the fourth aspect of the present invention, it is possible to guide the droplets dripped from the heel into the protective cover device in a state where the heel is switched to the open position.

Hereinafter, an embodiment of a shutter device for a machine tool embodying the present invention will be described with reference to FIGS.
As shown in FIG. 4, a protective cover device 12 is installed on the upper surface of the bed 11, and a work table for supporting a workpiece (not shown) is disposed inside the protective cover device 12. . An opening 13 for performing a work table maintenance inspection is formed on the front surface of the protective cover device 12, and the opening 13 can be opened and closed by a door 14.

  Of the left and right side plates 20 of the protective cover device 12, the right side plate 20 is formed with an opening 21 for carrying a workpiece into the protective cover device 12 as shown in FIG. The inner surface of the side plate 20 is opened and closed by a shutter 22 that can be moved up and down. The shutter 22 is mounted on the inner side surface of the side plate 20 so as to be movable up and down by a pair of left and right guide rails (not shown) disposed vertically along the opening edge in the vertical direction of the opening 21.

  A cylinder 24 for moving the shutter 22 up and down is attached to the upper part of the protective cover device 12, and the tip of the piston rod 25 is connected to a bracket 26 attached to the outer surface of the shutter 22. .

Next, the structure of the principal part of this invention is demonstrated based on FIGS. 1-3.
As shown in FIG. 3, the lower end of the shutter 22 is attached to the inner surface of the shutter 22 to collect water droplets or oil droplets dropped from the lower edge along the inner surface. 31 is mounted. The flange 31 includes a bottom plate 31 a and side plates 31 b and 31 c on both sides of the bottom plate 31 a, and the side plate 31 b is rotatably mounted by a hinge mechanism H outside the shutter 22. The hinge mechanism H includes a bearing 32 attached to the outer surface of the shutter 22 by, for example, welding, a horizontal cylindrical shaft tube portion 33 formed integrally with an upper end portion of the side plate 31b of the flange 31, and the It is constituted by a bearing 32 and a connecting shaft 34 penetratingly supported by the shaft tube portion 33. A switching piece 35 is formed integrally with the side plate 31b on the upper edge of the end of the side plate 31b of the flange 31. As shown in FIG. 3, the switching piece 35 is bent with respect to the upper end edge of the side plate 31b in a direction away from the shutter 22 and substantially perpendicular to the side plate 31b. It is formed so as to protrude from the right edge to the side plate 20 side.

  On the outer surface of the side plate 20, a first position regulating member is located slightly below the upper edge of the opening 21 and is located at the upper end of the vertical movement trajectory of the switching piece 35. A stopper 36 is attached. On the other hand, the second position restricting member is located near the lower end portion of the opening 21 on the outer surface of the side plate 20 so as to correspond to the stopper 36 in the vertical direction and on the movement locus of the switching piece 35. A cam plate 37 is attached. The cam plate 37 acts on the switching piece 35 to provide an inclined portion 37a for rotating the collar 31 to the open position around the connecting shaft 34, and the collar 31 rotated to the open position. It is formed with the holding | maintenance part 37b hold | maintained in a state. As shown in FIGS. 1A to 1C, a gap is formed between the surface of the side plate 20 and the holding portion 37b so that the tip of the switching piece 35 can enter.

  In this embodiment, a first position switching mechanism for switching the ridge 31 to the droplet receiving position is constituted by the switching piece 35 and the stopper 36 of the ridge 31, and the ridge 31 is constituted by the switching piece 35 and the cam plate 37. A second position switching mechanism for switching to the open position is configured. The first and second position switching mechanisms constitute a heel position switching means for switching the tub 31 to the droplet receiving position or the open position.

Next, the operation of the shutter device of the machine tool configured as described above will be described.
1 (a), 2 (a), and 3 show that the shutter 22 is moved upward by the piston rod 25 of the cylinder 24, the opening 21 is opened, and the switching piece 35 of the rod 31 is the stopper. 36 shows a state where the position is regulated by 36 and the ridge 31 is held at the droplet receiving position inside the protective cover device 12. In this state, when the piston rod 25 of the cylinder 24 is moved downward, the shutter 22 and the flange 31 are moved downward, and the switching piece 35 of the flange 31 is separated from the stopper 36. For this reason, as shown in FIGS. 1B and 2B, the collar 31 is rotated counterclockwise about the connecting shaft 34, and the collar 31 is inclined.

  Further, when the shutter 22 and the flange 31 are moved downward by the piston rod 25 of the cylinder 24 and the switching piece 35 comes into contact with the inclined portion 37a of the cam plate 37, the switching piece 35 is again connected to the connecting shaft 34. As shown in FIGS. 1 (c) and 2 (c), the collar 31 is rotated to the outside of the protective cover device 12 and moved to the open position. The Then, with the switching piece 35 in contact with the holding portion 37b of the cam plate 37, the collar 31 is held at the open position. In this state, the shutter 22 is moved to a position where the entire opening 21 is closed. Furthermore, the collar 31 is located outside the side plate 20.

  When switching the shutter 22 from the closed state to the open state, the piston rod 25 is moved upward, and the shutter 22 is moved upward together with the rod 31. This switching operation to the open state is completely opposite to the above-described switching operation to the closed state.

  The workpiece is machined by a tool mounted on a spindle device of a processing machine main body (not shown) in a state where the workpiece is supported on a work table inside the protective cover device 12 of the machine tool. At this time, the coolant is supplied to the workpiece being processed from a coolant supply device (not shown). A part of the supplied coolant scatters and adheres to the inner surface of the protective cover device 12 and the shutter 22, and most of the coolant flows down along the inner surface and is recovered by a coolant recovery device (not shown). Some of the coolant remains on the inner surface of the shutter 22 as droplets such as water droplets and oil droplets.

  When the processing of the workpiece is finished, the shutters 22 on the left and right sides of the protective cover device 12 in the closed state are opened by the piston rod 25 of the cylinder 24. At this time, the collar 31 attached to the shutter 22 is switched from the state shown in FIG. 1C to the state shown in FIG. 1A via the state shown in FIG. Even if some of the droplets such as water droplets and oil droplets adhering to the droplets are dropped downward, they are collected by the ridge 31.

According to the shutter device of the machine tool of the above embodiment, the following effects can be obtained.
(1) In the embodiment described above, the flange 31 is rotatably supported by the hinge mechanism H with respect to the lower end portion of the shutter 22, and the switching piece 35 is provided at the end of the flange 31. A stopper 36 and a cam plate 37 were attached on the movement trajectory in the vertical direction. Then, at the final stage of the ascending stroke of the shutter 22, the stopper 36 rotates the switching piece 35 together with the ridge 31 around the connecting shaft 34 to switch the ridge 31 to the droplet receiving position. For this reason, in the open state of the shutter 22, it is possible to collect droplets such as water droplets and oil droplets that are attached to the shutter 22 and are collected in the tub 31. It is possible to prevent the dropped liquid droplets from adhering to the arm during the inspection.

  Further, at the final stage of the lowering process of the shutter 22, the switching piece 35 is rotated together with the collar 31 by the cam plate 37, and the collar 31 is switched and held at the open position displaced to the outside of the protective cover device 12. For this reason, during processing of the workpiece, the ridge 31 is switched to the open position outside the shutter 22, so that droplets such as water droplets and oil droplets do not adhere to the ridge 31, and therefore the shutter 22 is opened. In the state where the ridge 31 is switched to the droplet receiving position, the droplet is not dropped from the ridge 31, and the droplet is prevented from dropping and adhering to the operator when the shutter 22 is opened. be able to.

  (2) In the above embodiment, one switching piece 35 is provided on the collar 31, and this switching piece 35 is switched to the droplet receiving position or the open position by the stopper 36 and the cam plate 37. Therefore, it is not necessary to use a driving source, and the number of parts can be reduced, manufacturing and assembling operations can be easily performed, and the cost can be reduced.

  (3) In the above embodiment, since the shaft cylinder portion 33 and the switching piece 35 are integrally formed with the rod 31, the number of parts can be reduced, and the manufacturing and assembling operations can be easily performed to reduce the cost. .

In addition, you may change the said embodiment as follows.
As shown in FIG. 6, a shooter 41 may be provided on the side plate 20 for guiding coolant or chips dropped from the flange 31 to the inside of the protective cover device 12. In this case, it is possible to reliably collect droplets such as water droplets and oil droplets dripped from the tub 31 at the open position. In this other example, the side plate 31c of the flange 31 may be inclined as indicated by a two-dot chain line. In this case, droplets such as water droplets and oil droplets remaining in the tub 31 can be easily discharged to the shooter 41 with the tub 31 being switched to the open position.

  Although not shown, a guide rail for changing the posture is provided on the outer surface of the side plate 20, and a posture changing element (for example, a roller or the like) attached to the rod 31 is made to enter the guide rail to cause the rod 31. The position switching operation may be performed.

  ○ Although not shown, the position of the connecting shaft 34 is displaced to the right in FIG. 1 (c), or the bending position of the switching piece 35 with respect to the side plate 31b of the flange 31 is displaced downward in FIG. The piece 35 may be a single flat plate.

  Although not shown, the ridge 31 may be switched to the droplet receiving position or the open position by an electromagnetic switching mechanism.

(A), (b), (c) is a longitudinal cross-sectional view for demonstrating the closing operation | movement of the shutter of the shutter apparatus of the machine tool of this invention. (A), (b), (c) is a front view for demonstrating the closing operation of a shutter. The perspective view which shows the collar | guard with which the shutter was mounted | worn, a switching piece, a stopper, and a cam board. The front view of the protective cover apparatus of a machine tool. The right view of the protective cover apparatus of a machine tool. The fragmentary longitudinal cross-section which shows another example of this invention.

Explanation of symbols

  H ... Hinge mechanism, 21 ... Opening, 22 ... Shutter, 31 ... 樋, 35 ... Switching piece, 36 ... Stopper as first position restricting member, 37 ... Cam plate as second position restricting member, 41 ... Shooter.

Claims (4)

A protective cover for protecting the work table of the machine tool is provided with an opening for carrying in or out the work, a shutter for opening or closing the opening by a lifting operation is mounted, and a water drop or an oil drop is provided at the lower end of the outer surface of the shutter. A reed for collecting liquid droplets such as a reed is mounted rotatably by a hinge mechanism, and when the opening is opened by the shutter , the reed is rotated to switch to a liquid drop receiving position that receives the lowermost part of the shutter, that in a state in which the opening is closed by the shutter having a trough position switching means for switching to an open position entirely held on an outer surface of the shutter of該樋 from the droplet receiving position by rotating the trough A shutter device for machine tools. In Claim 1, the said collar is mounted | worn with the horizontal direction so that rotation around a horizontal axis line is possible at the lower end part of a shutter, and when the said shutter is fully opened between the said protective cover and a collar, the said collar Is provided with a first position switching mechanism that switches from the open position to the droplet receiving position, and a second position switching mechanism that switches the eyelid from the droplet receiving position to the open position when the shutter is closed. A shutter device for a machine tool characterized by the above. 3. The first position switching mechanism according to claim 2, wherein the first position switching mechanism relatively presses the switching piece in a final stroke in which the switching piece provided at the end of the collar is attached to the protective cover and the shutter is raised. And a first position restricting member that moves the heel from the open position to the droplet receiving position, and the second position switching mechanism includes the switching piece provided at the end of the heel, and the protective cover. And a second position restriction member that is attached to the other surface and relatively pushes the switching piece in a stroke in which the shutter descends, and switches the eyelid from the droplet receiving position to the open position. A shutter device for a machine tool. 4. The shooter according to claim 1, wherein the protective cover includes a shooter for guiding a droplet dropped from the ridge to the inside of the protective cover in a state where the ridge is switched to an open position. A shutter device for a machine tool, wherein the shutter device is provided.

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