JPH0436311Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a writing device for an automatic drafting machine.

Conventional technology An automatic drawing machine draws by moving a writing device equipped with a writing instrument and paper relative to each other in the X and Y directions. There is a known device in which the writing instrument is lowered and pressed against the paper when the carriage is moved to draw, and when the carriage is moved without drawing, the writing instrument is raised and separated from the paper. ing.

Problems to be Solved by the Invention In such a writing device, it is necessary to be able to move the writing instrument up and down smoothly, and it is also preferable that the writing instrument is not visible from the outside.

Therefore, in this invention, a cover body equipped with a presser foot is attached to the carriage body, and by attaching the cover body, the writing instrument can be guided so as to move up and down smoothly, and the writing instrument can be covered so that it cannot be seen from the outside. Another object of the present invention is to provide a writing device for an automatic drafting machine in which when a cover body is removed, a presser body is also removed at the same time.

Means and action for solving the problem A cover body is attached to the front of the carriage body to create a carriage with a space between the two, and a writing instrument is attached so as to be vertically movable along a mounting groove formed on the front side of the carriage body. , the support shaft supported by the cover body is loosely fitted into the through hole of the presser foot to make the presser foot swing freely, the presser foot is pressed against the writing instrument with a spring, and the cover body is attached to the carriage body to smoothly move the writing instrument. The writing instrument can be guided to move up and down, cover the writing instrument, and even if there is an error in attaching the presser body, the writing instrument can be reliably guided by the presser body.

Embodiment As shown in FIG. 10, the automatic drafting machine has a carriage 4 that is movable along a guide rail 3 that extends horizontally between the upper parts of a left frame 1 and a right frame 2, and a pair of writing instruments 5, 5 and the positioning pin 6, and also insert the paper guide 7 and the underlay roll 8 between the lower parts of the left frame 1 and the right frame 2.
and a pair of drive rolls 9, 9 are provided, and push rolls 10, 1 are provided opposite to the pair of drive rolls 9, 9.
0 are arranged respectively, and the paper is conveyed in the Y direction by the drive roll 9 and the push roll 10, and the writing instrument 5 is moved in the X direction along the underlay roll 8.

As shown in FIG. 1, the carriage 4 is composed of a carriage body 11 and a cover body 12. The front surface of the carriage body 11 is a flat surface, and mounting grooves 13 having a substantially semicircular cross section extend vertically from side to side. A pair of upper protruding pieces are formed on the back side.
4, an intermediate recess 15, and a lower protrusion 16 are formed, and a pair of left and right mounting flanges 17, 17 are integrally formed on the left and right sides of the lower protrusion 16, protruding laterally, so that the carriage main body 11 has a symmetrical shape. , a horizontal through hole 18 is provided in the upper part of the left and right side surfaces 11a, 1
1a, and the pair of mounting grooves 13, 1
3, and an opening 19 is formed at the bottom of the mounting groove 13.

The cover body 12 has upper and lower vertically bent plates 21, 22, 23, 23 integrally formed on the periphery of a vertical plate 20;
3 is removably attached in a snap-type manner so as to face the front surface of the carriage body 11, thereby forming a space 24 therebetween. That is, as shown in FIG. 9, the locking piece 21a formed on the upper bending plate 21 is engaged with the downward locking recess 11b of the carriage main body 11, and the approximately L-shaped locking piece 21a is attached to the lower part of the vertical plate 20. The hook 20a is engaged with the stopper 11c provided at the lower part of the carriage body 11 and attached in a snap-type manner, and the stopper 11c is attached by pressing the push button 20b and elastically deforming the hook 20a.
It is designed so that it can be detached and removed. Semicircular notches 21a and 22a facing the mounting groove 13 are formed in the upper and lower bent plates 21 and 22 to form circular holes 25, respectively, and the left and right vertical bent plates 2
A support shaft 26 is horizontally suspended between 3 and 23, and this support shaft 26
The through holes 28 of the left and right pair of presser bodies 27, 27 are loosely fitted with a gap between them, and the presser body 27 is biased to swing toward the carriage body 11 by a spring 29, and the pair of protruding pieces 30 , 30 is opposed to the opening 19.

A leaf spring 32 is fixed to the upper surface of the upper protruding piece 14 with bolts 33, and a pair of left and right U-shaped brackets 34 are secured to the portions of the leaf spring 32 that protrude from both sides of the upper protruding piece 14 with bolts 35, respectively. In addition, a pair of left and right upper guide rollers 36 are rotatably supported on each of the brackets 34 by pins 37, and a pair of left and right lower guide rollers 38 are supported on the pair of left and right mounting flanges 17 by pins 39. The pair of left and right lower guide rollers 38 are rotatably supported, and are opposed to the pair of left and right upper guide rollers 36.
The upper and lower rail surfaces 3a, 3 of the guide rail 3 are located so as to protrude rearward from the back surface of the carriage main body 11.
In contact with b, the carriage 4 is movably supported on the guide rail 3 by four upper and lower guide rollers 36, 36, 38, and 38 so as to move smoothly in the left and right direction.

The writing instrument 5 has a pipe 4 inside a cylindrical case 40.
1 is slidably inserted into the pipe 41, and a sleeve 42 is integrally provided on the upper part of the pipe 41.
A pipe-shaped core stock 43 is inserted into the core stock 43, and a cap 44 is detachably attached to the upper part of the core stock 43. A stopper 45 is disposed above the cap 44, and when the sleeve 42 is lowered, the core is moved to the case 40. The sleeve 42 is gradually unrolled.
When the cap 44 is raised and brought into contact with the stopper 45, the refill in the lead stock 43 is fed out.

Specifically, as shown in FIG.
A lead holder 46 is attached to the tip of the pipe 4, and a lead chuck 47 is attached to the lower part of the lead stock 43.
Chuck rings 48 are fixed to the lower part of the chuck 1, facing each other, and the core chuck 47 is moved and held upward by a spring 49 together with the core stock 41, and the core chuck 47 is moved and held by the ball 50 and the slope 48a.
is reduced and deformed so as to clamp the core, and the sleeve 42 is attached to both vertical pieces 45a, 4 of the stopper 45.
Push out 5a and move upward to reach cap 44.
contacts the upper horizontal piece 45b, the core stock 43 stops, and only the pipe 41 moves upward, and the chuck ring 48 moves upward against the core chuck 47 against the spring 49, causing the core chuck 47 to become elastic. When the force is released and the lead is unclamped, the refill in the lead stock 43 falls through the lead chuck 47 to the lead holding bush 46a so that it can be replaced, and the cap 44 and stopper The upper horizontal piece 45b of 45 has core insertion holes 52, 5.
3 is formed so that the lead can be supplied to the lead stock 43 with the writing instrument 5 attached to the carriage 4, and a large diameter collar 54 is integrally formed on the case 40 to form a positioning part 55, and the sleeve 42 is provided with a lock tooth 56.

As shown in FIG. 7, the writing instrument 5 is installed in the mounting groove 13 of the carriage body 11 and temporarily secured by the temporary securing spring 60, and then the clamper 6
1 to the carriage main body 11 with a fixing bolt 62 for firm installation.

That is, a temporary fixing spring 6, which is plate-shaped and curved on both sides in a substantially U-shape, is installed in the intermediate portion 11' between the pair of mounting grooves 13, 13 on the front surface of the carriage main body 11.
A screw 63 is fixed at the middle part of the spring 60 so that the curved parts 60a on both sides slightly face into the mounting groove 13, and the fixing bolt 62 is screwed into the threaded hole 64 formed below the temporary fixing spring 60. case 40 of the pair of writing instruments 5, 5,
It is pressed to 40.

Further, a positioning piece 65 is fixed to the left and right end surfaces of the carriage body 11 with screws 66, and the positioning piece 65 slightly protrudes toward the mounting groove 13 to interfere with the positioning portion 55 of the case 40.

Since it is like this, the writing instrument 5 can be moved to the carriage 4.
To attach the writing instrument 5 to the mounting groove 13, the case 40 of the writing instrument 5 is fitted into the mounting groove 13, temporarily held by the curved portion 60a of the temporary fixing spring 60, and the case 40 is inserted into the mounting groove 13.
The positioning portion 55 is caused to interfere with the positioning piece 65 by sliding downward along the same direction.

Thereby, the writing instrument 5 is positioned in the vertical direction and temporarily held accurately at a predetermined position.

In this state, the clamper 61 is attached with the fixing bolt 62 and the case 40 is pressed to firmly attach the writing instrument 5.

Therefore, the pair of writing instruments 5, 5 can be positioned and firmly attached using one temporary fixing spring 60 and clamper 61.

The stopper 45 is attached to a mounting piece 67 attached to the upper part of the carriage body 11, and
A limit switch 68 is attached to a position above the temporary fixing spring 60 in the middle portion 11' of the carriage body 11, and its contact piece 68a protrudes slightly in a pair of mounting grooves 13, 13, and is attached to the sleeves of the pair of left and right writing instruments 5, 5. 42, 42, and when the sleeve 42 reaches a predetermined lowering position, that is, the lowest stroke position for feeding out the lead, a limit switch 68 is activated.
is turned on, so that one limit switch 68 can be used for two writing instruments 5.

A pair of left and right motors 70 are attached to the upper left and right end surfaces of the carriage body 11, and the output shafts 71 of each motor 70 protrude from both ends of the horizontal through hole 18, and the rack teeth 5 of the sleeve 42
One end of the pair of left and right pinions 72, 72 that mesh with the bearing 7 is fitted and connected, and the other end of the pair of pinions 72 is connected to the bearing 7 at the center of the horizontal through hole 18.
3 and 73, the pinion 72 is supported on both sides so that it does not become oblique in the axial direction even when pressed against the rack teeth 56.
The front sides of the left and right motors 70 are covered with left and right covers 74.

In this way, since the heavy motor 70 is attached to the end face of the carriage body 11 facing laterally and is at approximately the same height as the upper guide roller 36, the left-right balance of the carriage body 11 is stabilized. In addition, the center of gravity is located downward and toward the rear, allowing the carriage 4 to move smoothly from side to side.

Furthermore, when the cover body 12 is attached, the presser body 27 is pushed by the spring 29, and the pair of protruding pieces 30, 30 come into contact with the front surface of the carriage body 11, and the presser surface 3
1 abuts against the sleeve 42, and the sleeve 42 of the writing instrument 5 is guided by the rack teeth 56 and pinion 72 to move up and down smoothly.

At this time, there is a gap between the through hole 28 of the presser body 27 and the support shaft 26, and the presser body 27 can be freely displaced with respect to the support shaft 26, so even if there is an installation error, the pair of protruding pieces 30, 30 and the holding surface 31 can be brought into uniform contact with the front surface of the carriage body 11 and the sleeve 42.

The positioning pin 6 is vertically movably supported in a holder 80 attached to the end surface of the carriage body 11, and is urged upward by a spring 81.
When the upper part 6a is pressed, the pointed end 6b comes into contact with the underlay roll 8, and when adding and drawing a new figure to a sheet of paper on which a predetermined figure has been drawn, the figure drawn on the paper is The pointed end 6b is brought into contact with the position of , and the position of the carriage 4 at this time is recorded on the controller, so that when drawing a new figure, that position is used as the origin.

The guide rail 3 is connected by bolts 83 to a board 82 that is horizontally suspended between the left frame 1 and the right frame 2.

A locking plate 84 is fixed to the upper surface of the lower protrusion 16 of the carriage body 11 with bolts 85, and the locking plate 84 presses and fixes a cable 86, and this cable 86 is connected to a stepping motor (not shown) or the like. The carriage is reciprocated from side to side with
It is designed to run left and right.

In the above embodiment, the writing instrument 5 has a lead chuck 47.
Although the sleeve 42 is used to move the pen vertically up and down to feed out the leads one by one, a ballpoint pen or a case equipped with a rotary ring may also be moved up and down directly.In this case, by pressing the presser foot 27 against the case. Alternatively, a solenoid may be used to move the sleeve 42 and case up and down.

Effects of the invention The writing instrument 5 can be guided so as to move up and down smoothly with the presser body 27 provided on the cover body 12, and the writing instrument 5 can be covered with the cover body 12 so that it cannot be visually seen from the outside.

Further, since the through hole 28 of the presser body 27 has a larger diameter than the support shaft 26, the presser body 27 is attached to the cover body 12.
The spring 2 can be freely displaced vertically and horizontally with respect to the cover body 12, even if there is an installation error or a manufacturing error.
9, the presser surface 31 can be reliably pressed against and guided by the writing instrument 5.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a sectional view taken along the line A-A in FIG. 2, FIG. 2 is a front view of the carriage with the cover attached, FIG. 3 is a rear view,
Figure 5 is a sectional view taken along lines B-B and CC in Figure 1, Figure 6 is a plan view, Figure 7 is a front view of the carriage with the cover removed, and Figure 8 is D in Figure 7. -D line sectional view, Figure 9 is a sectional view of the cover body attachment part, Figure 10 is
The figure is a schematic perspective view of the automatic drawing machine, and FIG. 11 is a sectional view of the writing instrument. 4 is a carriage, 5 is a writing instrument, 11 is a carriage body, 12 is a cover body, 26 is a spindle, 27 is a presser body, 28 is a through hole, and 29 is a spring.

Claims (1)

[Scope of utility model registration request] A mounting groove 13 is formed in the front surface of the carriage body 11 in the vertical direction, and vertical bending plates 2 are formed on the front surface of the carriage body 11 at the periphery of the vertical plate 20.
1, 22, 23, and 23 are integrally formed, and a space 24 is formed between them by detachably attaching the cover body 12.
The case 40 of the writing instrument 5 is attached along the mounting groove 13 of the carriage body 11.
The lower part of the case 40 projects downward from the notch 22a of the lower bending plate 22 of the cover body 12, and the support shaft 26 is mounted between the left and right vertical bending plates 23, 23 of the cover body 12. The case 4 of the writing instrument 5 is horizontally supported in the space 24 of the carriage 4.
A presser foot 27 is provided which presses and guides the holder 0 and has a through hole 28 having a larger diameter than the spindle 26, and inserts the spindle 26 into the through hole 28 of the presser foot 27 to hold the presser foot 27 as a writing instrument. The presser body 27 and the vertical plate 2 of the cover body 12 can be freely swung toward the case 40 of No.
A writing device for an automatic drafting machine, characterized in that a spring 29 is provided between the presser body 27 and the case 40 of the writing instrument 5.