JPS6217555B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a numbering machine (stamping machine) for stamping letters (including numbers) such as a serial number on a workpiece such as a name plate for a machine, and relates to a small, lightweight, and general desk type check writer. This provides a numbering machine that is easy to operate.

Automatic numbering machines with motors have been used for a long time, but such numbering machines are large and expensive, so they are rarely used in places with little work space or a small amount of work. In a few places, numbers are still engraved by hand using a hammer and a tekin (a square-shaped tool with engraved characters). However, in this case, there is a risk that the arrangement of the engraved characters will be out of order, and since it takes time and effort to select the engraved characters, there will be problems if the work efficiency is low.

The present invention aims to provide a stamping machine that solves the above-mentioned problems, and is constructed as follows.

That is, in the present invention, the lower end of an arm having an engraved ring having an engraved character for a metal plate whose rotational angle position can be adjusted and a handle for push-down operation is supported by a base plate via a horizontal support shaft, and the longitudinal direction of the horizontal support shaft is The arm support section at the intermediate portion in the direction and the base plate support sections at both ends are eccentric to each other, and the horizontal support shaft is provided with an angular position adjustment mechanism around its axis, and the angular position adjustment mechanism is provided with an angle position adjustment mechanism at one end of the horizontal support shaft. A fixed rotary operation handle and a holding screw that fixes the horizontal support shaft to the base plate in a non-rotatable manner are provided, and by adjusting the angular position of the horizontal support shaft, the vertical position of the arm can be adjusted according to the thickness of the workpiece. A return mechanism is provided to return the arm to the raised position, and a work table facing the engraving ring is provided on the table plate so as to be slidable in the horizontal front and back direction at right angles to the horizontal support shaft. A position adjustment mechanism for adjusting the longitudinal position of the work table is provided, a table plate is provided on the base plate so as to be slidable in a work feed direction parallel to the horizontal support shaft, and the table plate extends in the work feed direction. A rack is provided, a pinion gear that meshes with the rack is rotatably supported by a base plate, the pinion gear and the lower end of the arm are connected via a connecting mechanism, and a ratchet that is connected to the pinion gear and that meshes with the ratchet are connected to the connecting mechanism. A feed pawl that drives the ratchet only in the direction in which the table plate moves in the workpiece feeding direction, and a link that connects the feed pawl and the lower end of the arm are provided, and the feed pawl comes into contact with the feed pawl and moves the feed pawl in the ratchet driving direction. It is characterized by the provision of a stopper that regulates the movement of air, and an adjustment mechanism that allows the position of the stopper to be adjusted steplessly.

Next, embodiments will be described with reference to the drawings.

In FIG. 1, which is a vertical cross-sectional view, arrow F indicates the front, and the base plate 3 placed on the workbench 1 via the rubber feet 2 moves upward from the rear end (right end in the figure). It is provided with an extending bracket 5, and the upper part of the bracket 5 is provided with a bracket 5 extending in the width direction (first direction) of the plate 3.
A downward extension 7a at the rear end of the arm 7 is rotatably supported via a horizontal shaft 6 extending in a direction perpendicular to the plane of the drawing.

The arm 7 extends diagonally upward and forward (upper left in the figure) from the upper end of the extension 7a in the work standby state in FIG. 1, and has a hole 7d in the front end surface 7c (left end surface). The rear half of the main shaft 8 fits into the hole 7d, and is prevented from coming off by a set screw 8a. Bushing 10 is attached to the front half 8b of the shaft 8.
are rotatably fitted, and are prevented from coming off by a bearing nut 11 and a bearing washer 11a attached to the front end of the shaft 8. A cylindrical portion 12a formed in the rear half of the handle 12 is fitted into the front half of the bushing 10 and fixed by a set screw 12b. Front part 12c of handle 12
A grip 13 is fitted onto the outer peripheral surface of the roll pin 13a.
It is fixed at The bushing 10 has an outward flange 10a at the rear thereof, and the inner peripheral portion of a positioning wheel 15 in the form of a spur gear is fixed to the rear end surface of the flange 10a by bolts 15a. wheel 15
An engraved ring 16 fitted on the outer periphery of the flange 10a is fixed to the outer periphery of the flange 10a by a stepped bolt-shaped location pin 16a, a nut 16b for the pin 16a, and a bolt 16c shown in FIG.

As shown in FIG. 2, which is a partial view of FIG.
One 6a is provided. An index character (not shown) is written on the outer peripheral portion 16d of the front end surface of the engraved ring 16, and the index character corresponds in the diametrical direction of the ring 16 to the engraved character formed on the ring outer peripheral surface 16e. That is, if it is assumed that there is an embossed character "X" at the lower end (engraved position) of the ring 16, then an index character "X" is located at the upper end (reading position) of the ring 16. Further, in order to read the index characters accurately, an indicator plate 17, which will be described later, is arranged above the ring 16 with its tip facing the reading position. For example, the stamped character group is "0, 1...9", "A, B...
It consists of a total of 40 characters and symbols such as "Z", "/" and ".".

As shown in FIG. 3, which is a cross-sectional view of FIG. 1, four bolts 15a are provided. wheel 15
Miniature bearings 18 are fitted into the external teeth 15b at two locations near the upper end of the wheel 15. Each bearing 18 is a bearing receiver 18a
The other end of each pressure spring 20 is bolted to a spring mounting plate 20a (block) located directly above the wheel 15, as shown in FIG. 20a is fixed to the front end of the upper surface of the arm 7 with a bolt via a positioning block 20b. Also, the instruction board 1
7 is fixed to block 20b.

When selecting an engraved character, the engraved ring 16 is rotated by the handle 12 via the bushing 10 and the wheel 15 to a predetermined rotation angle position, and the desired character is sent to the lower end of the ring 16 (the engraved position).
After the character feeding operation is completed, the mini-chia bearing 18 shown in FIG. 3 is engaged with the wheel 15 by the elasticity of the pressing spring 20, so the wheel 15 does not rotate freely and the marking ring 16 rotates at the above-mentioned predetermined rotation. It can be reliably stopped at an angular position. Also, the pitch of the teeth 15b of the wheel 15 matches the pitch of the engraved characters on the engraved ring 16, and the engraved ring 1
6 is designed to stand still only when the engraved characters are accurately sent to the stamping position.

A lower plate 21 is fixed to the upper surface of the front part (left part in FIG. 1) of the base plate 3, an upwardly facing front plate 22 is fixed to the front edge of the plate 21, and a lower plate 21 is fixed to the upper edge of the plate 22. An opposing upper plate 23 is fixed. Upper and lower plates 2
3 and 21 support the upper and lower ends of the vertical shaft 25 via bearings 25b and 25a, and the shaft 2
The lower part of the shaft 25 rotatably supports a feed plate 26 via a bearing 26a, and a ratchet 27 and a pinion gear 28 are fixed to the middle and upper parts of the shaft 25, respectively, by set screws 27a and 28a. A rack 29 extending parallel to the shaft 6 is engaged with the pinion gear 28 from the shaft 6 side. The rack 29 is fixed to the lower surface of the table plate 30 with bolts 29b via the auxiliary member 29a, and the table plate 30 is slidably mounted on the upper surface of the table seat plate 33.
The plate 33 includes side plates 31 and 32 (fifth side plates) fixed along both side edges of the base plate 3.
(Figure) and is fixed to the top. A rear presser plate 35 is attached to a bolt 35 on the rear edge of the plate 33.
It is fixed by a. A table seat plate 36 supported at both ends by side plates 31 and 32 is located on the front side of the rack auxiliary member 29a, and a front holding plate 37 is fixed to the upper surface of the plate 36. Both holding plates 35 and 37 are slidably fitted into notches provided at the upper rear edge and the upper front edge of the table plate 30 to hold the plate 30 on the shaft 6.
It is possible to move only in a direction parallel to .
40 is the front presser plate 37 and the table plate 3
The laser plate 41 disposed between the two holes is a bolt and nut for pressing the laser plate 40 onto the plate 30. A work table 42 is mounted on the table plate 30 in the front-rear direction (left-right direction in FIG. 1) using a table guide 43, which will be described later.
It is installed in such a way that its position can only be adjusted.
Reference numerals 45, 46, and 47 are covers fixed to the upper and front surfaces of the side plates 31 and 32 and the lower surface of the base plate 3.

50 is a stopper metal fitting fixed to the rear end of the base plate 3, and a lock nut 50 is attached to the upper part of the stopper metal fitting fixed to the rear end of the base plate 3.
A bolt 50b is attached using the bolt 50b, and a stopper 51 fixed to a boss 7e at the lower end of the arm 7 comes into contact with the tip of the bolt 50b in the standby state shown by the solid line. Figure 1 -
As shown in FIG. 4, which is a view from the arrow, both ends of the boss 7e protrude laterally (in a direction perpendicular to the longitudinal direction of the arm 7).

As shown in FIG. 5, which is a sectional view of FIG. 1, one bracket 5 is provided on each side edge of the plate 3, and both brackets 5 rotatably support both ends 6a of the shaft 6. A boss 7e of an arm 7 (FIG. 4) is rotatably fitted into an intermediate portion 6b of the shaft 6. One of the shaft ends 6a has a groove 6c on the outer circumferential surface, and the tip of a cap screw 53 with a handle 52 that is screwed into the screw hole of the bracket 5 is pressed against the inner surface of the groove 6c to prevent rotation of the shaft 6. are doing. A small diameter portion 6d protrudes from the end surface of the shaft end 6a having the groove 6c, and a handle 55 is fixed to the small diameter portion 6d by a split pin 55a. 52a is a split pin for fixing the handle 52 to the screw 53. and shaft end 6a
The center position of the intermediate part 6b is shifted from that of the other, so when the handle 52 is loosened and the shaft 6 is rotated, for example, 180 degrees by the handle 55, the center of the intermediate part 6b, that is, the center of rotation of the arm 7 is shifted up and down (and Move forward or backward). Therefore, even if the thickness of the workpiece (not shown) on the table 42 (FIG. 1) increases during the stamping operation described later (in the state indicated by the two-dot chain line in FIG. 1), the arm can be By raising the center of rotation of 7, the engraving ring 16'
can be pressed perpendicularly to the workpiece, and a predetermined engraved character can be engraved on the workpiece with uniform pressure over the entire surface.Also, even if the workpiece becomes thin, the rotation center of the arm 7 can be pressed at right angles to the workpiece. By lowering the pressure, the engraved characters can be engraved onto the workpiece with uniform pressure over the entire surface.

In FIG. 5, a spring hook 56 is fixed to a portion of the base plate 3 near the side plate 32 by a bolt 56a, a front end of a tension coil spring 57 is locked to the spring hook 56, and a rear end (not shown) of the spring 57 is fixed to the spring hook 56. is connected to the lower end of the arm 7 via a metal fitting (not shown) similar to the stopper 51 in FIG.

In FIG. 5, the feed plate 26 extends toward the side plate 31, and is located at the front of the end of the plate 26 opposite to the shaft 25 (top left in FIG. 5).
supports rotatably the longitudinally intermediate portion of a lever-shaped feed pawl 60 via a vertical set screw 60a. The feed pawl 60 has a tip 61 that engages with the ratchet 27, and a tension coil spring 62 stretched between the feed pawl 60 and the feed plate 26 biases the feed pawl 60 in a direction in which the tip 61 engages with the ratchet 27. . One end of a link ball 63b is rotatably connected to the rear side of the set screw 60a of the plate 26 via a vertical set screw 63a, and the other end of the link ball 63b is connected to one end of a link rod 63. There is. The other end of Link Road 63 is
As shown in FIG. 6, which is a view from the arrow in FIG. 5, the arm boss 7 is
It is connected to the lower end of e. 63f is a bolt.

In FIG. 1, the handle 12, which is in the standby state indicated by the solid line, is pushed down to rotate the arm 7 downward to the position indicated by the two-dot chain line 7', and when characters are stamped on the workpiece on the table 42 by the engraving ring 16', the arm The link bar 63 in FIG.
is pulled toward the shaft 6 side, and the feed plate 26
rotates around the shaft 25 to a position closer to the shaft 6 as indicated by a two-dot chain line 26'. In this case, the feed pawl 60 moves over the tooth tips of the ratchet 27 to the position indicated by the two-dot chain line 60', and therefore the ratchet 27, shaft 25, and pinion gear 28 in FIG. 1 do not rotate, and the rack 29 and table plate 30, the work table 42 also does not move.

After the stamping is completed, when you release your hand from the grip 13' or relax the pressure, the restoring force of the spring 57 shown in FIG.
The lower end of the arm 7' is pulled, and the arm 7' rises to the standby position shown by the solid line (the position where the stopper 51 abuts the bolt 50b). As it rises, the feed plate 26' in FIG. 5 is pushed by the link bar 63 and returns to the position 26 shown by the solid line, but in this case, the feed pawl 60' remains engaged with the ratchet 27 due to the elasticity of the spring 62. Since the ratchet 27 returns to the original solid line position 60 through the intermediate position 60'', the ratchet 27 rotates in the direction of arrow R by an angle corresponding to the return amount of the feed pawl 60. Therefore, the shaft 25 and pinion gear 28 in FIG. The work table 42 is rotated by the same angle, and the work table 42 is rotated by a predetermined pitch through the rack 29 etc.
It moves to the back side at right angles to the plane of the drawing, and the unengraved part of the work at the embossing position or the next work is sent. The present invention is also provided with an adjustment mechanism for adjusting the feed pitch of the table 42, the details of which will be explained with reference to FIGS. 5 and 7.

In FIG. 5, two screw receiving angles 65 and 66 are fixed to the front inner surface of the side plate 31 (the surface facing the shaft 25 on the left side in FIG. 5), and both angles 65 and 66 extend back and forth. A non-threaded portion of the screw shaft 67 is rotatably supported.
The shaft 67 has a handle 67a at its front end, and a compression coil spring 67b is compressed between the angle 65 and a snap spring fixed near the handle 67a. Both angles 65, 6 of shaft 25
A screw hole of a stopper block 68 is screwed into the threaded portion between the holes 6 and 6. The block 68 is slidably fitted into an elongated window hole 31a provided in a portion of the side plate 31 between both angles 65 and 66. An indicator plate 70 is fixed to the outer end surface of the block 68,
The indicator plate 70 extends forward along the side plate 31. Angle 65 of side plate 31
The mounting part has a set screw 7 with a handle from the outside.
1 are screwed together, and as shown in FIG. 7, which is a view from the - arrow in FIG. It is pressed and fixed. 72
is a scale plate fixed to the outer surface of the side plate 31 with screws 72a, and an upward pointed end 70b facing the scale plate 72 is provided on the indicator plate 70. 70c is a screw for fixing the indicator plate 70. In FIG. 5, a bolt-shaped head pin 73 extending in the front-rear direction is fixed to the opposite end of the block 68 from the indicator plate 70 using a lock nut, and the head of the head pin 73 is opposite to the tip 61 of the feed pawl 60. side end 60
It is in contact with b from the front side.

Loosen the setscrew 71 to make the indicator plate 70 movable, turn the shaft 67 using the handle 67a to move the block 68 toward the angle 66, and move the head of the head pin 73 to the position 73'. , tighten the set screw 70 to fix the indicator plate 70, block 68, and head pin 73. Then, when the feed plate 26' returns to the original position 26 after the above-mentioned embossing operation is completed, the feed pawl 26'
0' reaches the halfway position 60'', the head pin head 7
The feed pawl 60'' rotates in the direction of arrow Q relative to the feed plate 26, which abuts on 3' and continues to rotate in the direction of arrow R, and the tip 61 rotates in the direction of arrow Q relative to the feed plate 26, which subsequently rotates in the direction of arrow R. deviate from
Therefore, the feed pawl 60 reaches the ratchet 27 in the section from the return start position 60' to the intermediate position 60''.
As a result, the amount of rotation angle of the pinion gear 28 in FIG. 1 decreases, and the feed pitch of the table 42 also decreases. The position of the head pin 73 can be freely (continuously) adjusted by operating the handle 67a and the setscrew 71.
The position 60'' where the feed claw 60 comes off from the ratchet 27, in other words, the section where the feed claw 60 engages with the ratchet 27 (from position 60' to position 60'') can be freely adjusted, and the feed pitch of the workpiece on the table 42 can be changed steplessly. be able to.

Further, in the embodiment of the present invention, a mechanism is provided for moving the work table 42 shown in FIG. 1 in the front and rear directions with respect to the table plate 30. That is, in FIG. 8, which roughly corresponds to the cross-section shown in FIG. and are slidably fitted from above. A shaft receiving block 81 is fixed to the lower surface of the left end of the table plate 30 in the figure, and as shown in FIG. 9, which is a view from the - arrow in FIG. The tip of the section is fixed. In FIG. 8, the housing 82
A plate guide 43 is fixed to the upper surface of the plate guide 43 by a bolt 43a, and a side edge of the table 42 is slidably fitted into a guide groove of the guide 43. The block 81 and the housing 82 rotatably support a pinion shaft 85 having a handle 83, and a pinion gear 86 fixed to the shaft 85 meshes with a rack 87 fixed to the lower surface of the left side edge of the table 42. When the shaft 85 is turned by the handle 83, the rack 87 is moved in the front-rear direction (perpendicular to the plane of FIG. 8) by the pinion gear 86.
The table 42 is guided by guides 43 and 80 and moves in the same direction. Therefore, by operating the handle 83, the position of the workpiece in the front and back direction can be adjusted.

As shown in Figure 10, which is a view from the - arrow in Figure 8,
A label stopper 88 for attaching a workpiece is fixed to the table 42.

As explained above, according to the present invention, an engraved character can be selected by simply turning the handle 12, the character can be engraved by simply pushing down the handle 12, and the arm 7
Since the work table 42 can be automatically fed in synchronization with the rotation of the work table 42, the engraving work can be performed extremely easily and accurately, and work efficiency can be improved. Further, since a drive motor is not required, the structure of the device can be easily miniaturized, and costs can also be reduced.

Furthermore, in the present invention, the arm support part and the base plate support part of the horizontal support shaft are made eccentric to each other, and the horizontal support shaft is provided with an angle adjustment mechanism around its axis, so that the angular position of the horizontal support shaft can be adjusted. The vertical position of the arm can be adjusted according to the thickness. Specifically, as shown in FIG.
(base plate support part) eccentrically relative to each other,
The shaft 6 is provided with an angular position adjustment mechanism consisting of a handle 55 during rotation operation, a retaining screw 53 for preventing rotation, and the like.

According to this configuration, as described above, by adjusting the rotation angle position of the shaft 6, the vertical positions of the arm 7 and the embossing ring 16 can be adjusted in accordance with the thickness of the workpiece, regardless of the thickness of the workpiece. By always pressing the engraving ring 16 perpendicularly to the workpiece, the stamped characters can be engraved on the workpiece with uniform pressure over the entire surface, and the characters can be finished accurately and beautifully.

Further, since the height adjustment mechanism of the arm 7 is constructed using the support shaft 6 of the arm 7, the structure can be simplified compared to a case where the entire height adjustment mechanism is constructed from a dedicated member. Moreover, when adjusting the rotation angle position of the shaft 16, it is only necessary to loosen one end of the holding screw 53 and turn the handle 55 on one side of the shaft 6, so the rotation angle position adjustment work is extremely easy.

Further, according to the present invention, the work table 42 is provided on the table plate 30 so as to be slidable in the horizontal longitudinal direction at right angles to the horizontal support shaft 6, and the work table 42 is provided at a position on the table plate 30 to adjust the longitudinal position of the work table 42. Adjustment mechanisms (such as pinion gear 86 and rack 87 in FIG. 8) are provided, which also provide the following advantages.

That is, as described above, both ends 6a of the shaft 6
If the height of the arm 7 is adjusted by making the shaft eccentric, for example, when the shaft 6 is turned by 90 degrees, the arm 7 and the engraving ring 16 will also move in the front and rear directions, but according to the present invention, the ring By moving the table 42 back and forth in accordance with 16, it is possible to prevent the engraving position from shifting back and forth.

However, according to the invention, the table plate 30
A rack 29 is fixed to the rack 29, a pinion gear 28 that engages with the rack 29 is rotatably supported by the base plate 3, the pinion gear 28 and the lower end of the arm 7 are connected via a connecting mechanism, and the pinion gear 28 is connected to the connecting mechanism. and a ratchet 27 that engages with the ratchet 27 to hold the table plate 3.
A feed pawl 60 that drives the ratchet 27 only in the direction in which the ratchet 0 moves in the workpiece feeding direction, and a link 60 that connects the feed pawl 60 and the lower end of the arm are provided.
A stopper (block 68, head pin 73, etc.) that comes into contact with the feed pawl 60 to restrict the amount of movement of the feed pawl 60 in the ratchet drive direction R, and an adjustment mechanism (shaft 67, etc.) that can adjust the position of the stopper steplessly. It is set up.

This configuration has the advantage that the amount of drive of the ratchet 27 by the feed pawl 60 can be adjusted continuously, and the feed pitch of the workpiece can be adjusted steplessly.

Furthermore, by making the shaft 6 eccentric as in the illustrated embodiment, even if the thickness of the workpiece changes, each character can be engraved with uniform pressure over the entire surface.
Engraving work can be performed more accurately.

In addition, when embodying the present invention, a torsion coil spring may be arranged around the boss 7e instead of the spring 57 shown in FIG. 5.

[Brief explanation of the drawing]

FIG. 1 is a vertical longitudinal sectional view of an embodiment of the present invention, and FIG.
Figure 4 is a - and - arrow view of Figure 1,
Figures 3 and 5 are sectional views of Figure 1, and Figures 6 and 7 are of Figure 5.
The arrow view and FIG. 8 are vertical sectional views generally corresponding to the - section of FIG. 1, and FIGS. 9 and 10 are the - and - arrow view of FIG. 8. 3... Base plate, 6... Shaft (horizontal support shaft), 6a... Shaft both ends (base plate support part), 6b... Shaft intermediate part (arm support part),
7... Arm, 12... Handle, 16... Engraved ring, 27... Ratchet, 28... Pinion gear, 2
9... Rack, 42... Work table, 53, 55
...Press screw and handle (angle position adjustment mechanism), 5
7... Spring (part of return mechanism), 60... Feed claw, 6
3... Link bar, 73... Head pin (part of the adjustment mechanism).

Claims (1)

[Claims] 1. The lower end of an arm having an engraved ring with an engraved character for a metal plate whose rotational angle position can be adjusted and a handle for push-down operation is supported by a base plate via a horizontal support shaft, and a longitudinally intermediate portion of the horizontal support shaft. The arm support portion and the base plate support portions at both ends are eccentric to each other, and the horizontal support shaft is provided with an angular position adjustment mechanism around its axis, and the angular position adjustment mechanism is fixed to one end of the horizontal support shaft. It is equipped with a handle for rotation operation and a presser screw that fixes the horizontal support shaft to the base plate in a non-rotatable manner, and by adjusting the angular position of the horizontal support shaft, the vertical position of the arm can be adjusted according to the thickness of the workpiece. A return mechanism is provided to return the arm to the raised position, and a work table facing the engraving ring is provided on the table plate so as to be slidable in a horizontal direction at right angles to the horizontal support shaft. a position adjustment mechanism for adjusting the longitudinal position of the table plate, a table plate provided on the base plate so as to be slidable in a workpiece feeding direction parallel to the horizontal support shaft, and a rack extending in the workpiece feeding direction provided on the table plate; A pinion gear that meshes with the rack is rotatably supported by a base plate, and the pinion gear and the lower end of the arm are connected via a connecting mechanism, and the connecting mechanism includes a ratchet that is connected to the pinion gear, and a table plate that meshes with the ratchet. A feed pawl that drives the ratchet only in the direction in which it moves in the workpiece feeding direction, and a link that connects the feed pawl and the lower end of the arm are provided, and the link contacts the feed pawl to regulate the amount of movement of the feed pawl in the ratchet driving direction. A metal plate stamping machine characterized by having a stopper and an adjustment mechanism that allows stepless adjustment of the position of the stopper.