JPH0111516Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a drawing device built into the head of an automatic drawing machine.

The present invention provides a drawing device suitable for downsizing by allowing an elevating member to which a drawing device is attached to be attached to a tube on the head side without horizontal swinging of the elevating arm. The purpose is to

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described in detail below with reference to embodiments shown in the accompanying drawings.

Reference numeral 2 denotes a board of the head 4 of the automatic drafting machine, which is controlled by a numerically controlled feeding system so as to be controlled to move relative to the mounting table 6 in a predetermined direction within a plane horizontal to the upper surface of the mounting table 6. It's connected. Reference numeral 8 denotes a bracket fixed to the substrate 2, and a cylindrical body 10 is fixed to this bracket, and a guide hole is formed in the cylindrical body 10 in the vertical direction. Reference numeral 12 denotes a solenoid fixed to the substrate 2, and its operating shaft 14 is slidably inserted into the guide hole of the cylinder 10. The operating shaft 14
A lifting arm 16 is fixed to the holder, and a coil spring 18 is compressed and arranged between the lower surface of the arm 16 and the bottom surface of the large diameter portion of the cylindrical body 10.
The actuating shaft 14 is urged upward by the resilient force, and is elastically engaged with a stopper (not shown). A guide shaft 20 is provided on the bracket 8 in a direction perpendicular to the surface of the mounting table 6, and the guide shaft 20 is slidably inserted into a guide hole formed in the lifting arm 16. There is. 22 is the board 2
A mounting hole is formed around an axis perpendicular to the surface of the mounting table 6, into which the tube body 24 is slidably inserted, and a protrusion protruding from the outer peripheral surface of the tube body 24. The strip 24a is in contact with the upper surface of the substrate 2. Reference numeral 26 denotes a screw hole drilled in the board 2, one end of which opens into the side surface of the board 2, and the other end opens into the side surface of the mounting hole 22. 28 is the tube body 2
This is an upper tube body that is slidably fitted onto the upper outer circumferential surface of 4, and has a vertical hole 30 in its side wall as shown in FIG.
A pin 32 protruding from the outer wall surface of the tubular body 24 is fitted into the vertical hole 30 so as to be slidable in the vertical direction. The pin 32 and the vertical hole 30 constitute a rotation stopping mechanism. A coil spring 34 is disposed between a stepped horizontal surface formed on the outer circumferential surface of the tube body 24 and a stepped horizontal surface formed on the inner circumferential surface of the upper tube body 28. As shown in FIG. 5, a vertical groove 36 is formed in the upper part of the upper tube body 28 at an angle of 90 degrees with respect to the vertical hole 30.
The vertical groove 36 opens at the upper end surface of the upper tube body 28.

In addition, in FIG. 1, the vertical hole 30 and the vertical groove 36 are set at 180 degrees for convenience so that the vertical hole 30 and the vertical groove 36 can be seen.
It is illustrated on a cross section with an angular difference of degrees. A sloped surface 38 is formed on the upper end surface of the upper tube body 28, and the sloped surface 38 gradually slopes downward in the counter-hour hand reversal direction in FIG. 6, starting from the opening end of the vertical groove 36. , the lowest portion 38a is set substantially directly above the vertical hole 30. Reference numeral 40 denotes a cylindrical elevating member, and a threaded portion is formed on the outer circumferential surface of the upper part of the elevating member, into which a screw hole of an annular member 42 is screwed. . Disc-shaped protrusions 44 and 46 are formed on the outer peripheral surface of the annular member 42, and the protrusions 44 and 46 form a circumferential groove 48 having a U-shaped cross section.
is formed along the outer periphery of the The protrusion 46
As shown in FIG. 2, a notch 50 is formed. In this embodiment, the edge line formed by the end surface of the notch 50 is approximately parallel to and close to the tangent line of the edge line circle formed by the bottom surface 48a of the circumferential groove 48, but is limited to the shape shown in the figure. It's not a thing. One of the lifting arms 16 is configured to fit into the circumferential groove 48 . Reference numeral 52 designates a pin that protrudes from the annular member 42, and the dimensions of the pin 52 correspond to the vertical groove 36. Reference numeral 54 denotes a nut member that is screwed onto the elevating member 40, and is pressed against the upper surface of the elevating member 42 through a rubber ring. It is fixed in place on the surface. Reference numeral 56 denotes a collar member that is screwed into the elevating member 40, and the upper surface of this member is connected to the elevating member 4.
It is crimped to the lower end of the cap member 58 which is screwed into the cap member 58. 60 is a handle fixed to the upper tube body 28;
Reference numeral 2 denotes an annular holding body, the outer circumferential surface of which is slidably fitted to the inner circumferential surface of the elevating member 40, and the stepped horizontal surface of the holding body 62 is moved by the elasticity of the coil spring 64. It is in elastic contact with a stepped horizontal surface formed on the inner circumferential wall of the elevating member 40. 66a is ballpoint pen 66
It is a holder for (drawing tool), and the small diameter part of this is
It is inserted into a holding hole in the holder 62 and fixed to the holder 62 with a screw. The pen tip of the ballpoint pen 66 slightly protrudes a predetermined length in the direction of the mounting table 6 from the lower end surfaces of the holder 62 and the elevating member 40. Reference numeral 68 is a rotation stopper pin fixed to the elevating member 40, and the pin 68 is fitted into a vertical groove 70 formed in the holder 62 so as to be slidable in the vertical direction.

Next, the operation of this embodiment will be explained.

The operation of mounting the elevating member 40 on the board 2 side so that it can be raised and lowered will be described.

First, the screws 72 are loosened to allow the tubular body 24 to freely rotate relative to the substrate 2. Next, as shown in FIG. 3, the outer peripheral surface of the elevating member 40 to which the ballpoint pen 66 is attached is inserted into the inner peripheral surface of the tube body 24 from above. At this time, the edge line of the notch 50 of the member 42 is attached to one end of the lifting arm 16 as shown in FIGS.
Position them facing each other as shown in the figure. By this,
The elevating member 40 can be inserted into the tube body 24 until the upper surface of one end of the arm 16 comes into contact with the lower surface of the protrusion 44 . In this state, the pin 52 is
It is placed on the lower portion 38a of the inclined surface 38.
Next, hold the collar member 56 with your hand, rotate the lifting member 40 and the annular member 42 by 90 degrees clockwise in FIG. 2, and insert one end of the arm 16 into the circumferential groove 48 as shown in FIG. Fit and engage. Next, by hand, prevent the annular member 42 from rotating.
, hold the upper tube body 28 by hand, and hold the handle part 60 by hand.
Grasp the upper tube body 28 and rotate it in the counterclockwise rotation direction of the hour hand.
is rotated relative to the elevating member 40. Due to this rotation of the upper tube body 28, the inclined surface 38 is moved toward the pin 52.
rotate along. By rotating the upper tube body 28,
When the height of the inclined surface 38 becomes higher than the pin 52, the inclined surface 38 receives pressure from the pin 52, and this pressure causes the upper tube 28 to resist the elasticity of the coil spring 34 and move against the outer peripheral surface of the tube 24. descend along the
When the longitudinal groove 36 matches the pin 52, the upper tube 28
is released from the pressure from the pin 52, and the upper tube 28 rises along the outer peripheral surface of the tube 24 due to the elasticity of the coil spring 34, and the pin 52 fits into the vertical groove 36. As a result, the elevating member 40
8 in the rotational direction. Next, the screw 72 is screwed into the screw hole 26 and tightened tightly to fix the tube body 24 to the substrate 2. This completes the attachment of the elevating member 40 to the board 2.
In the above-described state, when the solenoid 12 is energized, the operating shaft 14 descends from a predetermined raised position to a predetermined lowered position against the elasticity of the coil spring 18 until it is stopped by the stopper surface. As the shaft 14 descends, the elevating arm 16 descends, and the elevating member 40 connected to the arm 16 descends by a predetermined amount. It hits the drawing surface. When the solenoid 12 is de-energized, the arm 16
The arm 16 is raised by a predetermined amount by the elasticity of the coil spring 18 until it is stopped on the stopper surface.
The ballpoint pen 66 that operates in conjunction with moves away from the drawing surface by a predetermined distance. While performing the up-down operation of the pen 66, the head 4 is controlled to move in a predetermined direction relative to the surface of the mounting table 6, and a predetermined figure is automatically drawn on the drawing surface.

As mentioned above, the present invention does not require the lifting arm to swing horizontally when the lifting member is attached to the board, so there is no need to create a horizontal swing space for the lifting arm, resulting in a compact design. There is an advantage that the device can be configured.

[Brief explanation of the drawing]

The drawings show a preferred embodiment of the present invention, and Fig. 1 is a side sectional view, Fig. 2 is a plan explanatory view, and Fig. 3 is a side view.
Figure 4 is a side view, Figure 5 is a sectional view, Figure 6 is a plan view, Figure 7 is a side view, Figure 8 is a side sectional view, and Figure 9 is a side view.
The figure is an explanatory plan view, and FIG. 10 is an external view. 2... Board, 4... Head, 6... Mounting table, 1
2... Solenoid, 16... Lifting arm, 24...
...Tube body, 28... Upper tube body, 30... Vertical hole, 36
... Vertical groove, 38 ... Inclined surface, 40 ... Lifting member,
42... Annular member, 48... Circumferential groove, 50... Notch, 52... Pin (protrusion), 66... Ballpoint pen (drawing tool).

Claims (1)

[Scope of utility model registration request] A tube is attached to the substrate of the head 4, which is relatively movable along the X-Y coordinate axis plane of the mounting table 6, so as to be movable in a direction substantially perpendicular to the X-Y coordinate axis plane and biased upward. an inclined surface 38 supporting the body 28 and having a height varying along the upper end of the tube body 28;
Forming a vertical groove 36 opening at the upper end of the tube body 28,
An elevating member 40 is fitted into the tubular body 28 so as to be movable up and down, and the elevating member 40 has a protrusion 52 that can be inserted into the longitudinal groove 36, a groove 48 for engaging the elevating arm 16, and the groove 48. is provided with a notch 50 that guides the arm 16 to a position where it can be engaged with the lifting arm 16, and the arm 16 is engaged with the groove 48 by rotating the groove 48 by a predetermined angle at the position where it can be engaged. In addition, the lifting arm 16
is located in the notch 50, the protrusion 52 is brought into elastic contact with the lower portion 38a of the inclined surface 38, and the elevating arm 16 is linked to an elevating mechanism provided on the head 4; A rotation stop mechanism is provided between the tube body 28 and the substrate 2,
A drafting device characterized in that a drawing tool 66 is attached to the elevating member 40.