JPH018396Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a swing table braking device in a multicolor high-speed pen recording device.

The applicant proposed that a multi-color high-speed pen recording device in which the pen position does not move has a narrower drawing width, a larger device, and an increase in weight as a solenoid and pen operating lever mechanism are required for each pen. We developed and applied for a multi-color high-speed pen recording device in which each pen swings to the drawing position, but this invention was developed because the swinging of the pens was caused by the weight of the swinging table. Accurate, without being automatically performed due to inertia etc.
The object of the present invention is to provide a swing table braking device for a multicolor high-speed pen recording device that can secure the swing position of the pen.

First, the configuration of the multicolor high-speed pen recording device developed by the applicant will be explained based on the illustrated embodiment.As shown in FIG.
A platen roller 2 that receives a signal and rotates in both forward and reverse directions is mounted between the wall bodies of the machine body having 1',
A pulse motor 5 is mounted in a direction perpendicular to a pair of guide rods 3 and 4 provided parallel to the platen roller 2, and similarly rotates in both forward and reverse directions upon receiving a signal.
An endless drive wire 6 that rotates in both forward and reverse directions.
A pen head A is provided which slides on the guide rods 3 and 4 at the same time.

The external appearance of this pen head A is as shown in Fig. 1, but the details of its configuration are as shown in the exploded view of Fig. 4, including the pen head stand 7 ((see Fig. 4 A)), The pen head stand 7 is made up of three parts: a stand 25 ((see Figure 4 B)) and a pen cassette 26 ((see Figure 4 C)), and is mounted on the guide rods 3 and 4. Protrusions 8 ₁ and 8 ₂ are provided for setting a central axis 0-0 orthogonal to the guide rods 3 and 4, and the upper surface of the pen head base 7 is aligned with the central axis 0.
It is formed into an arcuate surface 9 with a radius R with −0 as the central axis,
On the end surface ₈₀ of the pen head stand 7 on the side of the platen roller 2, a pair of bell crank pieces 1 are arranged symmetrically with respect to the vertical line Y-Y perpendicular to the central axis 0-0.
0 and 10' are pivotally supported by pins 11 ₁ and 11 ² to shaft bearing seats 11' and 11'' protruding from the end surface ₈₀ , and the upper end of one bell crank piece 10 has a protruding shaft 12 on the front side. ₂ , and meshing teeth 12 _{and 1} are provided on the back side, respectively.
The other bell crank piece 10' is provided with a fork part 13 that engages with the upper end ₁₀₁ of the one bell crank piece, and the bell crank bases 10, 10'
A coil spring 15 is stretched in the notches 14, 14' at the lower end of the pen head base 7.
A vertically penetrating through hole 16 is provided in the guide rod 3, and a rising wall portion 18 having a _U -shaped cross section is provided in the sliding portion 17 on the guide rod 3 on the opposite side from the end surface 80. Elastic plates 21 for returning the solenoid are provided in slits 20 and 20' provided in both sleeve parts 19 and 19' of the wall part 18.
As shown in FIG. 6, the moving iron core 23 of the solenoid 22, which is inserted through the rising wall part 18 and provided outside the rising wall part 18, has a small diameter part 23' at the tip, and the moving iron core 23 is provided outside the rising wall part 18.
The small diameter portion 23' of the movable iron core 23 protrudes from the elastic plate 21, and a tail portion 37' of the pen 37 is inserted through the small hole 21' of the elastic plate 21 and protrudes inward.
A pressing coil spring 24 is provided.

Next, the rocking table 25 (see FIG. 4B) is a rectangular plate-like body whose lower surface forms an arcuate surface 9' that is in close contact with the circular-arc face 9 on the upper surface of the pen head table 7. Engagement posts 2 for attaching the pen cassette 26 at the four corners of the
7 ₁ , 27 ₂ , 27 ₃ , 27 ₄ are installed upright, and 2
Swinging arms 28 and 29 of the book are vertically arranged, and the swinging arm 28 is connected to the platen roller side end surface ₈₀ of the pen head stand 7.
Between the pair of shaft bearing seats 11' and 11'', the swinging arm 29 passes through the protrusion 8 ₁ and the through hole 16 of the pen head 7, and the protrusion 8 ₂ of the pen head 7. The pivot arm 28 is pivotably supported on the center axis 0-0 by a shaft rod 30 and a split ring 31, and furthermore, on the side surface of the swing arm 28 on the platen roller side, a In addition, an internal gear sector 28 ₁ is provided (see also FIG. 2) centered at a point 0' (the pivot point) on the central axis 0-0, and the pen head base 7 is attached to the internal gear sector 28 ₁ . The engaging teeth 12 ₁ provided on the back side of the upper end of the bell crank 10 pivoted on the end face 8 ₀ are elastically engaged by the elasticity of the coil spring 15, and assembled as shown in FIG. 3.

The engagement pillars 27 ₁ , 27 ₂ for attaching the pen cassette,
27 ₃ and 27 ₄ have pen cassettes 26 on opposite sides.
protruding ears 32 ₁ , 32 ₂ , 32 ₃ , 3 protruding from the four corners of the
2 ₄ ((see Figure 4 C)) engages with the engaging portions 33, respectively.
₁ , 33 ₂ , 33 ₃ , and 33 ₄ are provided to protrude from the upper end, respectively.

Next, the pen cassette 26 is inserted into the rectangular plate-shaped body 3.
At the four corners of 4, as mentioned above, there are protruding ears 32 ₁ , 32 ₂ ,
32 ₃ and 32 ₄ are provided protrudingly, and hanging wall portions 35 and 32 are provided at the front and rear ends.
36, and three pens 3 are provided on the front end hanging wall portion 35.
7 ₁ , 37 ₂ , 37 ₃ , and the rear end hanging wall 36 has through holes 38 and 39 into which the tail portion 37 ′ of each pen can be inserted, respectively, in FIGS. 1 and 7. As shown in the figure, when assembled to pen head A, the center axis is 0.
The pen cassette 26 is provided on one arcuate surface with a radius R centered at -0, and is resiliently engaged with the plate-shaped body 34 of the pen cassette 26 on the rear end hanging wall 36 side with the engagement ears 40 on both sides. and a stepped portion 49 near the tip of each pen. A coil spring 50 is interposed between the front end hanging wall 35 and the pen tail 3 at all times.
7' is pressed inside the bent portion 41. 7th
As shown in the figure, any one of the three pens in the pen cassette 26 (the middle pen 37 in Figure 7 ₎
is on the vertical line Y-Y passing through the central axis 0-0 of the pen head stand 7, the tail ₃ of the pen 372
7' faces the coil spring 24 at the tip of the movable iron core 23 of the solenoid 22 of the pen head stand 7 (see FIG. 6), and the rectangular plate 3
4 have contact pieces 43 ₁ and 43 ₂ ((see Fig. 4 C)) projecting from both sides.

To attach the pen cassette 26 to the swing table 25, as shown in FIG.
6 at an angle and the front ears 32 ₁ and 32 ₂ into the 9th
As shown in FIG.
When ^the pen cassette ₂₆ is hooked onto the engaging portions 33 ₁ and 33 ₂ of the pen cassette 27 and the rear end of the pen cassette 26 is pressed down, the rear prongs 32 ₃ and 32 ₄ have tapered portions, as shown in FIG. 43, the rear engagement column 27
₃ and 27 ₄ and the tapered portion 43 engage with each other. When pressed further, the engaging posts 27 ₃ , 27 ₄ escape a little backwards due to their elasticity, the pen cassette 26 descends without difficulty, the engaging posts 27 ₃ , 27 ₄ return to their original positions due to their elasticity, and the engaging portions 33 ₃ , 33 ₄ is the pronged ear 32 of the pen cassette 26
₃ and 32 ₄ as shown in FIG. 9C, the installation is completed and the pen cassette 26 does not move slightly. In addition, when removing the pen cassette 26 from the rocking table 25, the engaging posts 27 ₃ and 27 ₄ are deflected backward against elasticity, and the engaging parts 33 ₃ and 33 ₄ are attached to the prongs 32 ₃ and 32 of the pen cassette 26. It can be easily removed by removing it from the top of ₄ .

Separately, each of the walls 1, 1' has a structure shown in FIGS.
As shown in FIG. 11, when the pen head stand 7 moves, the pen cassette 26 and the dogs 45, 46 have a cam surface 44 that acts to push down the protruding shaft ₁₂₂ of one of the bell crank pieces 10. Hit piece 4
3 ₁ , 43 _{2 ,} move the rocking table 25 to the center axis 0-0
Abutment piece 47, 4 for tilting around
8.

Since this embodiment has the configuration as described above,
Now, in Fig. 7, pen 37 ₁ is a red pen, 3
7 ₂ is a black pen, pen 37 ₃ is a blue pen,
Assuming that the black pen 37 ₂ is on the vertical line Y-Y, the tail 37' of the pen 37 ₂ is connected to the solenoid 2.
It is aligned with the moving iron core 23 of No. 2.

Therefore, if you want to draw a printed figure using the black pen ₃₇₂ , first press the solenoid 22 in this state.
When a signal is sent to the solenoid 22, the solenoid 22 is energized and the pen 37 is energized via the moving iron core 23 or the coil spring 24.
₂ , the pen 37 ₂ moves forward against the elasticity of the coil spring 50 and is resiliently pressed onto the recording paper on the platen roller 2. Therefore, if a signal is sent to the platen roller 2 and the pulse motor 5, the platen roller 2 will rotate in both forward and reverse directions, and the pen head A will be linearly displaced in both forward and reverse directions on the guide rods 3 and 4 in response to the signal. Characters, figures, etc. are represented in black on recording paper.

Next, when using the red pen ₃₇₁ , the pulse motor 5 is operated to move the pen head A, for example, to the first
When moved to the left in FIG. 1, the state shown in FIG. 10A goes from FIG.
2 ₂ , and the cam surface 44 gradually pushes down the protruding shaft 12 ₂ . As a result, the notches 14, 14' of both bell crank pieces 10, 10' are opened, the coil spring is stretched and expanded, and the protruding shaft ₁₂₂ side is biased in the upward direction.
The meshing tooth 12 ₁ is thus released from meshing with the internal tooth ring sector 28 ₁ . For this reason, the coupling relationship between the pen head stand 7 and the rocking stand 25 is broken, so when the pen head A is moved further to the left, the abutting piece 47 of the pen cassette 26 is brought into contact with the abutting piece 47 provided on the wall 1.
3 ₁ reaches the end, the swinging table 25 is tilted so that the red pen 37 ₁ is on the vertical line YY, as shown in FIG. 10C. Then, when the pen head A is returned to the center, the protruding shaft 12 ₂ of the bell crank 10 moves away from the dog 45 and rises due to the action of contracting toward the center of the coil spring 15 , and the meshing teeth 12 provided on the opposite side of the protruding shaft 12 ₂ rise. ₁ meshes with the internal tooth ring sector 28 ₁ again, the oscillating table 25 and the pen head 7 are connected again, and the red pen 37 ₁ is aligned with the moving iron core 23 of the solenoid 22, so the solenoid 2
2. If signals for printing graphics are sent to the pulse motor 5 and platen roller 2, red printing will be performed. Next time, when you want to return to black printing again, press the pen head A as shown in Figure 10D.
When the bell crank 1 is moved to the right and hits the dog 46 provided on the other wall 1', the cam surface 44 engages the bell crank 1.
The protruding shaft 12 ₂ of the pen head A is pushed down, the meshing teeth 12 ₁ are released from meshing with the internal tooth ring sector 28 ₁ , and the coupling relationship between the rocking table 25 and the pen head stand 7 is released, so that the pen head A can be moved further. If you move it to the right, the black pen 37 ₂ will be on the vertical line Y-Y as _shown in FIG. The meshing tooth 12 ₁ provided in the inner tooth ring sector 28 1 meshes with the internal tooth ring sector 28 ₁ again, and it is possible to print in black. However, if you want to use blue color instead of black, it is possible to print further to the right than the state shown in Fig. 10 E. Move it towards the blue pen 3.
7 If ₃ is placed on the vertical line Y-Y and returned to the center,
As shown in FIG. 10, since the rocking table 25 is tilted to the left and connected to the pen head table 7, it has the remarkable effect of making it possible to print in blue. The protruding shaft 12 ₂ of the bell crank piece 10 comes into contact with one of the left and right dogs 45 and 46 and is pushed down, the meshing teeth 12 ₁ are released from meshing with the internal tooth ring sector 28 ₁ , and one of the abutting pieces 47 , 48, the rocking table 25 often rotates by more than a necessary angle due to its own weight or inertia, resulting in a drawback that the switching position of the multicolor pen becomes inaccurate.

The purpose of this invention is to provide a swinging table braking device for a multi-color high-speed pen recording device that can eliminate the above-mentioned drawbacks.

Referring to FIG. 4, the configuration of an embodiment of the oscillating table braking device in the multi-color high-speed pen recording device according to this invention will be explained. 25, a number of through holes 4 corresponding to the number of pen mounting through holes 38 provided in the pen cassette 26 are provided in the swing direction of the swing table 25.
9. For example, if there are three through holes 38, three are provided at equal intervals in a straight line, and a ball 50 that can partially fit into the through hole 49 and a ball 50 are always provided on the pen head stand 7. The bottom surface of the rocking table 25 (arc surface 9')
A hole 52 is provided in which a coil spring 51 that can be pressed is housed.

Since this embodiment has the above-mentioned configuration, the protruding shaft ₁₂₂ of the bell crank 10 comes into contact with either the left or right dog 45, 46 and is pressed down, so that the meshing teeth 12
₁ is released from engagement with the internal tooth ring sector 28 ₁ ,
When the rocking table 25 is tilted by either of the abutting pieces 47, 48, even if the rocking table 25 starts to swing by itself due to its own weight, the head of the ball 50 will not be able to swing due to the repulsive force of the coil spring 51. Since the bottom of the moving table 25 is pressed, the brake is applied and it does not move on its own.
When the head of the ball 50 fits into the through hole 49 of the rocking table 25, the tail portion 37' of the switched pen moves to the coil spring 2 at the tip of the movable iron core 23 of the solenoid 22.
Accurately confront 4.

Since this device has the above-mentioned structure and function, the swing table 25, and therefore the pen cassette, do not swing by themselves, but move quietly by being pushed by the abutting piece, and can maintain the correct switching position of the pen. This has the effect of allowing accurate drawing.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the pen head of a multi-color high-speed pen recording device previously filed by the applicant, Fig. 2 is an exploded perspective view of the coupling structure between the rocking table and the pen head stand, and Fig. 3
The figure is a perspective view looking up from below of the coupling structure of the rocking base and pen head stand and related members, Figure 4 is an exploded perspective view of the pen head showing the structure of the braking device according to this invention, and Figure 5 is a pen cassette. FIG. 6 is a front view of the tail of the pen cassette, FIG. 7 is a side view of the pen head on the side of the platen roller, FIG. 8 is an explanatory diagram of the operation of the pen head, and FIG.
The figure is an explanatory diagram of how to attach the pen cassette to the rocking table, Figure 10 is an explanatory diagram of the operation to change the color, and Figure 11 is an explanatory diagram of how to attach the pen cassette to the rocking table.
The figures each show a perspective view of the whole, 1 and 1' are wall bodies,
2 is a platen roller, 7 is a pen head stand, 22
is a solenoid, 25 is a rocking table, 26 is a pen cassette, 37 is a pen, 38 is a through hole, 45 and 46 are dogs, 49 is a through hole, 50 is a ball, 51 is a coil spring, 52 is a hole, A is a pen head, M indicates a coupling device, respectively.

Claims (1)

[Scope of utility model registration request] The wall 1 of the fuselage having opposing walls 1, 1',
1', a platen roller 2 that rotates in both forward and reverse directions upon receiving a signal, and a platen roller 2 that also receives a signal and is arranged perpendicular to the platen roller 2 and can move in both forward and reverse directions in the axial direction of the platen roller 2. A high-speed pen recording device having a pen head A, the pen head A having a pen head stand 7, a rocking stand 2
5. The pen cassette 26 is detachably attached to the rocking table 25 and has a plurality of pens 37 removably attached thereto. 29 is attached to the protruding parts 8 ₁ and 8 ₂ of the pen head base 7 that protrude from the bottom surface at a distance from the side surface of the platen roller 2, and the rocking base 25
The pen 37 of the pen cassette 26 attached to the pen cassette 26 is pivoted so that it can swing in a position perpendicular to the platen roller, and bell cranks 10, 10' are provided on _both sides of the protrusion 8 on the platen roller 2 side. A protruding shaft is pivotably supported and urged upward by a coil spring 15, and engages with a fork portion 13 provided on the side surface of the platen roller 2 on the center side of one bell crank 10 on the center side of the other bell crank 10'. 12
₂ horizontally, and an arc-shaped internal gear sector 2 provided on the platen roller 2 side of the swing arm 28 on the opposite side.
A coupling device M is provided which can fix the swinging arm 28 in the swinging position by horizontally protruding the meshing teeth 12 ₁ that mesh with the swinging arm ₂₈ .
The rocking table 25 is provided with a solenoid 22 that presses the pen against the platen roller 2 at one point in the center of the rocking stroke according to a signal, and a protruding shaft 12 ₂ is provided inside each of the walls 1 and 1'. A dock 4 having a cam surface 44 that can come into contact with the protruding shaft ₁₂₂ to push the protruding shaft 122 downward to release the connection between the rocking table 25 and the pen head table 7.
5, 46, and abutment pieces 47, 48 which abut the abutment pieces 43 ₁ , 43 ₂ protruding from both sides of the pen cassette 26 to tilt the rocking table 25, The rocking table 25
, a number of through holes 49 corresponding to the number of pen mounting through holes 38 provided with the pen cassette 26 are provided in a straight line at equal intervals in the direction of swing of the swing table 25, and the pen head stand 7 is is provided with a hole 52 that accommodates a ball 50 that can be partially fitted into the through hole 49 and a coil spring 51 that can constantly press the ball 50 against the bottom surface of the rocking table 25. Rocking table braking device.