JPH0611947U - Door device for processing machine cover - Google Patents

Abstract

(57) [Abstract] [Purpose] A window with a large opening area can be formed on the surface of a small area of a processing machine cover, and a door body that closes this window can be stored in an unobtrusive position in the open state. To do. [Structure] The doors 21 and 22 are connected by a butterfly plate 23 so that they can be folded. Doors 21 and 2
Brackets 33a, 33b, 33c are rotatably provided on the upper part of the roller 2, and the roller 3 provided on the bracket
5a, 35b, 35c and supporting rollers 36a, 36b, 3
The doors 21 and 22 are guided to the rail 31 by 6c. The rail 31 is provided with a linear guide portion 31a along the inner surface of the front plate 11, a curved guide portion 31b, and a linear guide portion 31c along the inside of the left side plate 12. When the door body 21 is driven in the C direction by the drive mechanism 50, the door bodies 21 and 22 are folded and housed inside the front plate 11 and the left side plate 12, and the window formed in the front plate 11 is opened. To be done.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a door device for opening and closing a window of a cover surrounding a main body of a processing machine such as a machining center, and more particularly to a door device suitable for a small processing machine.

[0002]

[Prior art]

 In machining machines such as machining centers, chips and coolant are scattered by cutting, and in order to ensure work safety, a cover that surrounds the machine body is often attached. It is necessary to form a window on the front surface of the cover for setting a jig on the work table or for other work, and in this case, a door device for opening and closing the window is provided. This type of conventional door device is generally provided with a door body that linearly slides along the surface on which the window is provided, and the sliding operation opens and closes the window. is there.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned sliding door device, an area for accommodating the door when the window is opened must be secured inside the surface of the cover where the window is formed. There is a limit to the ratio of the opening area of the. Therefore, it can be applied to a processing machine with a large area where the window is formed, but in the case of a small processing machine, the opening width of the window becomes too small, so the sliding door device cannot be used. I can't come.

Further, in this type of small-sized processing machine, when a so-called double door opening device that rotates outward is provided in the window of the cover, the door body that opens outward becomes an obstacle to the work. It is also possible to install a sliding door on the outside of the cover, but when the window is enlarged and the door is enlarged, the sliding and open door will protrude to the side of the cover. However, it not only interferes with the work, but also blocks the passage on the side of the cover, which poses a problem in terms of work safety.

The present invention solves the above-mentioned problems of the prior art. Even in a small processing machine, the area of the window of the cover can be made as large as possible, and the door covering the window is obstructed when opening and closing. It is an object of the present invention to provide a door device for a processing machine cover that can be stored so that it will not be stored.

[0006]

[Means for Solving the Problems]

 A door device for a processing machine cover according to the present invention includes a plurality of door bodies which cover the windows from the inside, and a movement of the door bodies inside a cover which surrounds the processing machine body and has a surface on which a window is formed. And a guide mechanism for connecting the doors to each other so that the doors can be folded with each other through an edge extending in the vertical direction, and the guide mechanism is provided with the window of the cover. A straight guide portion along the inner side of the surface, and a curved line interior for guiding the door body from the surface on which the window is formed to the side surface orthogonal thereto. Is.

In addition, the guide mechanism is arranged above and below the door body, and a plate-shaped rail is provided as an example of an upper guide mechanism, and the guide mechanism is rotatably supported above the door body via a vertical shaft. It is possible to provide a structure in which a number of brackets are provided, and rollers that roll on the rails are provided in the brackets.

Further, the door body is provided with a traction member coaxially supported by a bracket provided at the frontmost portion in the window closing direction, and the traction member is provided on the surface of the cover on which the window is formed. A drive mechanism that moves linearly can be provided to automatically open and close.

[0009]

[Action]

 In the above means, the plurality of doors are connected so as to be in a folded posture, and when closed, the linear guides of the guide mechanism make the respective doors planar with each other and the windows are covered from the inside. When the door is slid to the side during opening, the doors are folded along the curved guide part of the guide mechanism, while part of the door is in a plane perpendicular to the surface on which the window is formed. It is stored inward. Since the guide mechanism has a curved guide part, when the door body is slid in the opening direction, the door body will be in the posture of following the inner surface of the cover, and the door body will not greatly project into the inside of the cover, and the space inside the cover will be reduced. Don't block.

Further, the guide mechanism and the support device of the door body for the guide mechanism can be realized by a simple structure such as a rail and a roller of a bracket rotatably supported by the door body.

Further, a drive mechanism that exerts a linear drive force is provided inside the surface where the window is formed, and this drive drives the traction member linearly, and drives the door body in the opening and closing direction via the bracket. By doing so, it is possible to configure an automatic opening and closing type door device.

[0012]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an upper structure of a door device according to the present invention from the inside of a cover, FIG. 2 is a longitudinal sectional view showing a state in which a window is closed by a door body, and FIG. 3 is a view showing structures of upper and lower guide mechanisms. 2 is a partial front view taken along the arrow III, FIG. 4 shows the structure of the upper guide mechanism and is a sectional view taken along the line IV-IV of FIG. 2, and FIG. 5 shows the structure of the lower guide mechanism. V sectional view, FIG. 6 shows the upper guide mechanism and the drive mechanism from the inside of the cover, and the view taken along the line VI-VI in FIGS. 1 and 2, FIG. 7 is a front view of the processing machine cover, and FIG. 8 is the processing machine. It is a right view of a cover.

First, the structure of the processing machine cover will be described with reference to FIGS. 7 and 8. In a machining center 1 which is a main body of a processing machine, a column 3 is movably provided on a base 2 installed in a work place, and a processing head 4 is provided on the column 3. The tool is held on the spindle of the processing head 4. A work table 5 is provided in front of the column 3, and the work is fixed on the work table 5 by a jig. The column 3 is controlled to move in the X-Z direction, the machining head 4 is controlled to move in the Y direction with respect to the column 3, and a tool provided on the machining head 4 performs a machining operation on a workpiece.

The machining center 1 serving as the main body of the processing machine is covered with covers 10 on all four sides. The cover 10 is fixed to the upper part of the base 2. The cover 10 is a combination of a front plate 11, a left plate 12, a right plate 13, and a rear plate 14, which are fixed to each other by bolting or the like. A window 11a is formed in the front plate 11, and jig installation work, jig adjustment work, and chip cleaning work of the internal work table 5 are performed from this window 11a. The right side plate 13 also has a window 13a formed for the same purpose. The door device 20 according to the present invention is provided inside the window 11a of the front plate 11.

In this door device 20, as shown in FIG. 1 and the like, two door bodies 21 and 22 are provided. Each of the two doors 21 and 22 is formed with a vertically long opening 21a, 22a, and the opening 21a, 22a is covered with a transparent plate 25, 26 such as an acrylic plate. As shown in FIG. 2, the transparent plate 25 (26) is fixed to the inner edges of the openings 21a and 22a by a strip member 27. Further, as shown in FIG. 7, a handle 21c is provided on the outer surface of one door body 21.

A plurality of butterfly plates 23 are fixed between the edge portions 21b and 22b of the respective door bodies 21 and 22 which extend vertically, and a shaft 23a of the butterfly board 23 allows both door bodies 21 and 22 to be connected to each other. Are connected so that they can fold each other. As shown in FIG. 4 (not shown in FIG. 1), a flexible sheet 24 made of rubber or the like for covering the butterfly plate 23 from the inside is provided at the connecting portion between the door bodies 21 and 22. The flexible sheet 24 closes the gap between the connecting portions of the door bodies 21 and 22. Each of the door bodies 21 and 22 is designed by an upper guide mechanism 30 and a lower guide mechanism 40.

In the upper guide mechanism 30, as shown in FIGS. 1 to 4, a rail 31 is provided on the upper inner surface of the front plate 11 of the cover 10. As shown in FIG. 4, the rail 31 is supported by two support members 32a and 32b fixed to the upper inner surface of the front plate 11 and a support member 32c fixed to the upper inner surface of the left side plate 12. There is. As shown in FIGS. 1 and 4, the rail 31 has a linear guide portion 31 a extending along the inner surface of the front plate 11, a curved guide portion 31 b continuous with the linear guide portion 31 a, and a left side plate 12 of the left side plate 12. A linear guide portion 31c is formed along the inner surface. The curved guide portion 31b has a predetermined curvature and is bent in an arc shape, and the convex direction of this arc is directed to the joining corner portion 15 between the front plate 11 and the left side plate 12. Therefore, the space A surrounded by the corner portion 15 and the rail 31 has a minimum size.

As shown in detail in FIGS. 1 and 3, the upper plate 21d of the door 21 is provided with brackets 33a and 33b, and the upper plate 22d of the door 22 is provided with a bracket 33c. . The brackets 33a, 33b, 33c are rotatably supported by support shafts 34a, 34b, 34c provided on the upper surfaces of the doors 21 and 22 in the vertical direction.

Rollers 35a, 35b, 35c are rotatably supported on the brackets 33a, 33b, 33c. Each of the rollers 35a, 35b, 35c is formed with a flange at both ends of the outer periphery, and the intermediate portion between the flange and the flange can be rolled without coming off the rail 31. The brackets 33a, 33b, 33c are provided with small-diameter support rollers 36a, 36b, 36c, and the rails 31 are supported from above and below by the rollers 35a, 35b, 35c and the support rollers 36a, 36b, 36c. As a result, the door bodies 21 and 22 are prevented from coming off the rail 31.

In the lower guide mechanism 40, as shown in FIGS. 3 and 5, a guide plate 41 is provided along the inner surfaces of the front plate 11 and the left side plate 12. As shown in FIG. 5, the guide plate 41 is supported by support members 42a and 42b fixed to two places on the lower inner surface of the front plate 11 and a support member 42c fixed to the lower inner surface of the left side plate 12. It is fixed. A guide groove 43 is formed in the guide plate 41. The guide groove 43 is formed in the same plane position as the rail 31 of the upper guide mechanism 30 described above, and has a shape in which the center locus of the guide groove 43 and the center locus of the rail 31 coincide with each other. That is, in the guide groove 43, a linear guide portion 43a that linearly extends along the inner surface of the front plate 11, a curved guide portion 43b having a predetermined curvature that is convex toward the corner portion 15, and an inner surface of the left side plate 12 are provided. A linear guide portion 43c is formed along the line.

Two rollers 44 a, 44 b are rotatably supported on the lower surface of the door body 21, and a roller 44 c is rotatably supported on the lower surface of the door body 22. These rollers 44 a, 44 b, 44 c rolls in the guide groove 43. The support shaft of the roller 44a is coaxial with the support shaft 34a supporting the bracket 33a of the upper guide mechanism 30, and the support shafts of the other rollers 44b and 44c are also the brackets 33b and 33c of the upper guide mechanism 30. Are located coaxially with the support shafts 34b and 34c. Therefore, the door body 21 is guided by the rail 31 and the guide groove 43 at two upper and lower coaxial positions, and the door body 22 is guided by the rail 31 and the guide groove 43 at one upper and lower coaxial position.

As shown in FIGS. 1, 2 and 6, a drive mechanism 50 is provided on the uppermost inner surface of the front plate 11. In this drive mechanism 50, a traction member 51 is connected to the front end of the door body 21 in the closing direction. A connecting piece 51a is integrally provided at the lower end of the pulling member 51. As shown in FIG. 2, the support shaft 34a supporting the bracket 33a provided at the frontmost portion of the door body 21 in the closing direction extends to the lower surface side of the upper surface plate 21d of the door body 21, and the connecting piece 51a is rotatably connected to the support shaft 34a.

As shown in FIG. 1, a pneumatic cylinder 53 is fixed to the innermost surface of the front plate 11 by a pair of brackets 52, 52. A piston having a magnet is accommodated in the pneumatic cylinder 53 so as to be movable in the axial direction, and the piston is generated by the air pressure supplied from one end 53a or both ends 53a and 53b of the pneumatic cylinder 53. It is axially driven inside the pneumatic cylinder 53. A saddle 54 is slidably provided on the outer periphery of the pneumatic cylinder 53. The inner surface of the shaft hole 54a of the saddle 54 is made of a magnetic material, and is attracted by the magnet of the piston moving inside the pneumatic cylinder 53 to drive the saddle 54 in the axial direction of the pneumatic cylinder 53. It is like this.

A U-shaped drive bracket 55 is fixed to the saddle 54, and a sliding shaft 56 is provided between the bent pieces 55 a and 55 b of the drive bracket 55. A sliding piece 51b is integrally fixed to the upper part of the pulling member 51, and a sliding hole 51c formed in the sliding piece 51b is slidably supported by a sliding shaft 56. A coil spring 57 is provided on the outer circumference of the sliding shaft 56. The coil spring 57 is interposed between the sliding piece 51b and the bending piece 55b in a state of being slightly contracted from the free length. Due to the elastic force of the spring 57, the sliding piece 51b of the pulling member 51 is constantly pressed against the bent piece 55a of the drive bracket 55.

When the piston in the pneumatic cylinder 53 is moved, the saddle 54 and the drive bracket 55 integrated with the saddle 54 are driven in the B-C direction. The B direction is the door closing direction, and the C direction is the door opening direction. When the drive bracket 55 is driven in the B direction and the door bodies 21 and 22 are driven in the closing direction via the pulling member 51, when a foreign object hits the closing side edge 21e of the door body 21, When the spring 57 contracts and the sliding piece 51b of the pulling member 51 slides in the direction C relative to the sliding shaft 56, an excessive driving force acts on the foreign matter or the door body 21. Can be prevented.

Further, when the spring 57 is contracted to the limit, the movement of the door body 21 in the B direction is obstructed, and at this time, the driving force in the B direction is continuously applied from the pneumatic cylinder 53 to the saddle 54. When it is present, the magnetic attraction between the piston in the pneumatic cylinder 53 and the saddle 54 is released, so that the door 21 is not subjected to an excessive closing force. That is, the pneumatic cylinder 53 and the saddle 54 exert a driving force, and the spring 57 is provided to form a double safety structure.

As shown in FIGS. 4 and 6, the operation detecting device of each of the above-mentioned mechanism parts is first provided with a detection dog 37 at the upper end of the closing side edge part 21e of the door body 21, and the front plate 11 of the front plate 11. A limit switch 38 for detecting the detection dog 37 is provided on the inner surface to detect whether or not the door bodies 21 and 22 are completely closed. Further, as shown in FIG. 6, in the drive mechanism 50, the drive bracket 55 is provided with a detection dog 58, and the inner surface of the front plate 11 is provided with a limit switch 59 for detecting the detection dog 58. By detecting the detection dog 58 by the limit switch 59, it is detected whether or not the drive bracket 55 has moved in the C direction, that is, the door opening direction.

Next, the opening / closing operation of the door device 20 will be described. A state in which the window 11a of the front plate 11 is closed from the inside by the door bodies 21 and 22 is shown by (a) in FIGS. 1, 4, and 5. At this time, in the upper guide mechanism 30, each roller 35a, 35b, 35c is located in the linear guide portion 31a of the rail 31, and in the lower guide mechanism 40, the rollers 44a, 44b, 44c are arranged in the linear guide portion 43a of the guide groove 43. Is located in. Therefore, the door bodies 21 and 22 are developed in the same plane, and the window 11a is covered from the inside by both door bodies 21 and 22.

When the door is opened, air pressure is supplied into the pneumatic cylinder 53 of the drive mechanism 50 by the operation of the operation panel (not shown), the internal piston is driven in the C direction, and the saddle 54 is moved by the magnetic attraction force. Following this, the drive bracket 55 is driven in the C direction. Then, the pulling member 51 pressed against the bent piece 55a by the spring 57 is driven in the C direction, the support shaft 34a on the upper surface of the door body 21 is pulled in the C direction, and the door bodies 21 and 22 slide.

In this sliding operation, the roller 35c provided on the upper part of the doors 21 and 22 and the roller 44c provided on the lower part of the door 31 and the guide part 31b of the rail 31 and the guide part 43b of the guide groove 43 are provided. After passing, it moves to the end position of each of the linear guide portions 31c and 43c. Further, the upper roller 35b and the lower roller 44b move to intermediate positions of the curved guide portions 31b and 43b of the rail 31 and the guide groove 43, respectively. At this time, the window 11a is completely opened, and the door bodies 21 and 22 are in the storage posture shown in FIG. 4 and FIG.

The rollers 35 a and the rollers 44 a provided above and below the front end of the door body 21 in the closing direction are located in the linear guide portions 31 a and 43 a of the rail 31 and the guide groove 43, respectively, in the completely opened state. ing. That is, while the door bodies 21 and 22 are moving between the posture (a) in which the window 11a is closed and the storage posture (b) in which the window 11a is opened, the rollers 35a and 44a have the linear guide portions. It only moves linearly along the inner surface of the front plate 11 guided by 31a and 43a. Therefore, the door mechanisms 21 and 22 can be driven between the positions (a) and (b) by the drive mechanism 50 that exhibits only the linear drive force shown in FIG.

Further, in the storage posture (b), the door bodies 21 and 22 are in a state of being folded around the shaft 23 a of the butterfly plate 23. However, since the curved guide portion 31b of the rail 31 and the curved guide portion 43b of the guide groove 43 are curved curves in the direction of the corner portion 15 of the cover, the door bodies 21 and 22 are arranged in the direction of the corner portion 15. It is housed inside the front plate 11 and the left side plate 12 in a state where the mountain is folded. Therefore, the door bodies 21 and 22 do not largely protrude inward of the cover.

Next, when the window 11a is closed, an air pressure is supplied into the pneumatic cylinder 53 of the drive mechanism 50 by an operation (not shown), the piston is driven in the B direction, and the saddle 54 and the drive bracket 55 are moved in the B direction. Be driven to. At this time, the pulling member 51, which is pressed against the bent piece 55a by the spring 57, is driven in the B direction, and the door bodies 21 and 22 are pulled in the B direction, so that (a) in FIG. 1, FIG. 4, and FIG. As shown by, both doors 21 and 22 are flat and the window 11a is closed from the inside. As described above, when the closing side edge portion 21e of the door body 21 is hit by a foreign object at this time and the movement of the door body 21 in the B direction is prevented, the spring 57 contracts and the saddle 54 moves. The force prevents the door body 21 from being unreasonably applied, and when an excessively large blocking force acts on the door body 21, the magnetic attraction force between the piston in the pneumatic cylinder 53 and the saddle 54 is released, and the door body 21 is released. The closing drive force on 21 is released.

In the above-described embodiment, the drive mechanism 50 is provided so that the door bodies 21 and 22 can be automatically opened and closed. However, the drive mechanism 50 is not provided and the door body 21 is provided outside the door body 21. The doors 21 and 22 may be opened and closed manually by gripping the handle 21c provided on the surface.

[0035]

[Effect of device]

 As described above, according to the present invention, even when the window is provided on the narrow surface of the cover, when the door is opened, the cover is orthogonal to this surface from the inside of the surface provided with the window. The door can be stored inside the surface, so that the window can be opened in a large area.

Further, since the guide member is provided with the curved guide portion, the door body in the state where the window is opened and housed does not largely project inward of the cover, and therefore the inner space of the cover is formed. Can be used effectively.

Further, by driving the closing-side tip portion of the door body in the opening / closing direction by the drive mechanism, it is possible to configure a door device that automatically opens / closes. Further, by driving the opening and closing of the frontmost portion of the door body in the closing direction, the door body can be opened and closed by the drive source that operates linearly.

[Brief description of drawings]

FIG. 1 is a perspective view showing an upper structure of a door device inside a processing machine cover from the inside of the cover;

FIG. 2 is a vertical cross-sectional view showing a state in which a window of the cover is closed by a door body,

FIG. 3 is a front view taken along the arrow III in FIG. 2, showing the structures of an upper guide mechanism and a lower guide mechanism of the door body;

FIG. 4 is a IV-IV of FIG. 2 showing a structure of an upper guide mechanism.
Line cross section,

5 is a cross-sectional view taken along line VV of FIG. 2 showing the structure of the lower guide mechanism,

FIG. 6 is a view showing an upper guide mechanism and a drive mechanism in FIGS. 1 and 2;
VI arrow view of

FIG. 7 is a front view showing the outer appearance of the processing machine cover,

FIG. 8 is a right side view showing the appearance of the processing machine cover,

[Explanation of symbols]

 1 Machining center as a processing machine main body 2 Base 3 Column 4 Processing head 5 Work table 10 Cover 11 Front plate 11a Window 12 Left side plate 13 Right side plate 14 Rear plate 20 Door device 21, 22 Door body 21b, 22b Edge part connected 23 Butterfly board 30 Upper guide mechanism 31 Rail 31a Straight guide portion 31b Curve guide portion 31c Straight guide portion 33a, 33b, 33c Bracket 34a, 34b, 34c Support shaft 35a, 35b, 35c Roller 40 Lower guide mechanism 41 Guide plate 43 Guide groove 43a Linear guide part 43b Curved guide part 43c Linear guide part 44a, 44b, 44c Roller 50 Drive mechanism 51 Traction member 53 Pneumatic cylinder 54 Saddle 55 Drive bracket 57 Spring

Claims (3)

[Scope of utility model registration request] 1. A plurality of door bodies that cover the windows from inside and a guide mechanism that guides the movement of the door bodies are provided inside a cover that surrounds the main body of the processing machine and has a surface on which a window is formed. The door bodies are connected to each other via an edge portion extending in the vertical direction so that they can be folded, and the guide mechanism extends along the inner side of the surface of the cover on which the window is formed. A door device for a processing machine cover, which is provided with a linear guide portion and a curved guide portion that guides the door body from a surface on which the window is formed to a side surface orthogonal to the straight surface. 2. The guide mechanism is arranged above and below the door body, and the upper guide mechanism is provided with a plate-shaped rail, and is rotatably supported on the upper portion of the door body via a vertical shaft. The door device for the processing machine cover according to claim 1, wherein the plurality of brackets are provided with rollers that roll on the rails. 3. The door body is provided with a traction member coaxially supported by a bracket provided at the frontmost portion in the window closing direction, and the traction member is provided on a surface of the cover on which the window is formed. The door device for the processing machine cover according to claim 2, further comprising a drive mechanism that linearly moves the member.