JPS63205275A - Pressing apparatus of stamping body in stamping apparatus - Google Patents

Abstract

PURPOSE:To stepwise and accurately adjust the pressurizing level of a stamping body and to shorten the planning time accompanied by the alteration of the thickness of a work, by providing plural stages of hammer projection groups different in a protruding height to the under surface of a stamping hammer pressurizing the head part of the stamping body. CONSTITUTION:Plural stages of hammer projection groups different in a protruding height are provided to the under surface of a stamping hammer 21 in a protruding state and the lateral positions of a stamping body and the stamping hammer 21 are made freely adjustable so that the head part of the stamping body 13 is pressurized by the hammer projection of one protruding height forming the hammer projection groups 35 at the time of the downward movement of the stamping hammer 21. When a work W is altered to a thick one, the lateral position of the stamping hammer 21 to the stamping body 13 is shifted and the stamping body 13 is pressurized by the hammer projection having a shorter protruding height. Whereupon, the most downward movement of the stamping body is upwardly adjusted and accurate stamping is performed rationally.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applied to a punch press machine or the like that stamps a plate-shaped material processed by a sheet metal processing machine such as a punch press machine for sorting. , relates to a pressurizing device for a stamp body in a stamp device for stamping on a workpiece material.

[Prior Art] Today's production departments employ a method of sorting machines, devices, units, and parts by assigning letters, numbers, and symbols to them.

However, there is no device that can freely select and engrave letters, numbers, and symbols for high-variety, low-volume production products that are processed using punch press machines, etc. The body was set and stamped.

In addition, in conventional marking devices, the marking body is held above the head of the marking body, which is held so as to be movable up and down, and when moving downward, the head of the marking body is pressed down to cover the lower part of the marking body. The structure is equipped with a stamping hammer that stamps the processed material.

[Problems to be solved by the invention] Therefore, when stamping with a conventional punch press machine,
Because it is shared with the mold station for pressurization, at most 15
20 types, and since the number of molds used for pressurization is correspondingly reduced, the number of workpieces that can be processed is significantly reduced.

In addition, the method of installing a dedicated marking device outside the punch press machine to perform only marking requires double investment in the positioning machine, pressure device, and controller for the marking device, and the installation space of the device also increases. Since it would be 2ffi, it would be a very poor investment efficiency.

Furthermore, in order to transfer the workpiece from the processing machine to the stamping machine, a means of conveyance is required, which further impairs the positional accuracy of the stamping.

Other marking methods are manual, but automation and unmanned marking are impossible.

In addition, with conventional marking devices of this type, it is troublesome to adjust the descending level of the stamping body to correspond to the thickness of the workpiece material, so it takes a lot of time to make adjustments in response to changes in the thickness of the workpiece. If this adjustment is insufficient, there are problems such as insufficient marking or damage to the stamped body.

The present invention has been made in view of this point, and provides a pressurizing device for a stamped body that can quickly and accurately switch and adjust the lowering level of the stamped body in accordance with the thickness of the material to be processed. The purpose is to

[Means for Solving the Problems] The structure of the present invention for achieving the above object will be described with reference to FIGS. 3 to 6, which correspond to embodiments.

That is, according to the pressurizing device for the stamped body in the stamping device of the present invention, the lower surface of the stamping hammer 21 is provided with a plurality of groups of hammer protrusions 35 having different protrusion heights, and the front filling stamping hammer 21 When the hammer protrusion group 35 moves downward,
The lateral position of the stamping body 13 and the stamping hammer 21 is adjustable so that the head of the stamping body 13 is pressed downward by the hammer protrusion of one protruding height forming the stamping body 13. .

[Function] In the above configuration, the workpiece material W is placed on the lower surface of the stamp body 13.
(hereinafter referred to as work W), and set the engraving hammer 21.
By moving downward, the stamp body 13 is pressed down and a stamp is applied.

When the thickness of the workpiece W is changed to a thicker one, by shifting the lateral position of the marking hammer 21 with respect to the marking body 13 and lowering pressure on the marking body 13 by the hammer protrusion with a shorter protrusion height, the marking body 13 can be lowered. The lowest moving position of is adjusted upward, making it possible to perform accurate engraving without difficulty.

[Example] Hereinafter, a pressurizing device for a stamped body in a stamping device according to the present invention will be described in detail with reference to an embodiment shown in FIGS. 1 to 11.

FIG. 1 is a partially cutaway perspective view showing the schematic configuration of a stamping machine in which a stamping device equipped with a pressurizing device for a stamped body according to the present invention is incorporated into the stamping machine, and FIG. An enlarged front view showing a partially cut away cross-section of a main part of a pressurizing device for a stamped body according to an embodiment of the invention; FIG. 3 is a perspective view showing the same stamped body;
FIG. 4(a) is a plan view showing the arrangement of the marking bodies held on the rotary disk and the relative positions of the protruding portions of the marking hammers and the hammer protrusions for medium thickness plates, and FIG. 4(b) teeth,
(a) A plan view showing the orientation of characters stamped on a medium-thick workpiece W at the relative positions shown in the figure, Figure 5 is a perspective view showing the same stamping hammer as above, and Figure 6 shows the same as the above stamping hammer. FIG. 7(a) is an enlarged side view showing the height relationship between the plurality of hammer protrusions and the protrusions of the stamping body, and FIG. (a,)
(b) is a plan view showing the orientation of characters stamped on a thick workpiece W at the relative positions shown in (a). Figure 8 (a
), the hammer protrusion of the engraving hammer shown in Fig. 7(a) and the desired engraving object are rotated by a predetermined angle, and the desired engraving object and the hammer protrusion for thin plate thickness are at the engraving position. A plan view showing the relative position after being transferred, (b) and (a)
A plan view showing the orientation of the characters engraved on the thin workpiece W at the relative positions shown in the figure, and FIG. 10 is a sectional view taken along the line 1-1 in FIG. 9 for explaining the rotary disk rotation control mechanism and the engraving hammer rotation control mechanism, and FIG. 11 is a schematic diagram of the turret base rotation control mechanism as described above. It is a sectional view of the turret base for explaining.

First, the structure of the entire stamping machine will be schematically explained based on FIG. In the figure, the stamping machine body 1 has a turret shaft 2 (
(see FIGS. 10 and 11) are rotatably erected on the turret shaft 2, and on the turret shaft 2, an upper turret substrate 3a and a lower turret substrate 3b having a planar fan shape constituting the turret base 3.
is fixed.

In these upper and lower turret substrates 3a and 3b, a plurality of holes are formed in pairs at regular intervals on the circumference of the same radius centering on the turret axis 2, and A rotary disk 4 and a die holder 5 are disposed facing each other in the hole. The rotary disk 4 and the die 5a supported by the die holder 5 disposed opposite thereto constitute a pair of stamping sets 6 (hereinafter referred to as "stamping sets 6") of the same stamping machine.

In addition, at the fixed position of the stamping machine main body 1, there is a hammer part that has a center concentrically with the center of the rotary disc 4 and is movable up and down in response to an operation command, above the rotary disc 4 in the stamping position. 7
are arranged facing each other.

Furthermore, a positioning device 8 for moving the workpiece W in the X-axis and Y-axis directions is disposed on either side of the stamping machine body 1, and the positioning device 8 is movable in the X-axis and Y-axis directions. A carriage 8a is provided, and the workpiece W is fixedly supported on the carriage 8a.

Next, a plurality of pairs of marking sets 6 arranged on the above-mentioned upper and lower turret substrates 3a and 3b will be described in detail with reference to FIGS. 1 to 4(a) and FIG. 10.

As shown in the figure, the engraving set 6 is rotatably held in holes 9 (FIG. 2) provided on the upper turret base plate 3a at regular intervals on the circumference around the turret shaft 2. a die 5a supported by a die holder 5 (FIG. 10) fixed to a hole (not shown) on the lower turret substrate 3b disposed opposite to the hole 9; It is made up of. As shown in FIG. 2, the rotary disk 4 has a hollow cylindrical flange shape, and holding holes 10 (circumference 12 in FIG. 4(a)
12 arranged at regular intervals θ (θ = 30°) on the equally divided points
A worm wheel 11 is fixed to the outer periphery of the rotary disk 4 at a substantially central position in the axial direction by a key 12. The rotary disk 4 sandwiches the upper turret substrate 3a between the flange portion of the rotary disk 4 and the lower surface of the worm wheel 11, and is rotatable but prevented from sliding up and down.

Further, a stamping body 13 is held in the holding hole 10 of the rotary disk 4 so as to be movable up and down, and a stamping blade 14 (see FIG. 3) for marking letters, numbers, symbols, etc. is provided at the bottom of the stamping body 13. It is formed. The head 13a of the stamped body 13 has a large diameter and is shaped like a nail with notches on both sides.
A projection 1 is provided along the axial direction in the center of the upper surface of the head 13a.
5 is provided protrudingly. Furthermore, a bottle 16 is embedded in the outer periphery of the head 13a of the stamped body 13 in the radial direction.

Furthermore, a thin cylindrical guide tube 17 is provided at the top of the rotary disk 4.
is fixed thereto, and slits 18 are formed along the axial direction on the outer periphery of the guide tube 17 in the same arrangement as the holding holes 10 of the rotary disk 4.

Then, the bottle 16 of the stamped body 13 is inserted into the slit 18.
is fitted and inserted, and the engraving body 13 is configured so that it can slide vertically within the holding hole 10 of the rotary disk 4 while being prevented from rotating left and right while the bottle 16 is guided by the slit 18.

Furthermore, the engraved body 13 is normally attached to a recess formed above the holding hole 10 with a diameter larger than that of the engraved body 10.
The return spring 19 that is wound around the shaft of the stamped body 13 between the bottom surface of the head 13a of the stamped body 1
The stamping body 13 is held at the top dead center position such that the outer edge of the upper surface of the head 13a of the stamping body 13 contacts the blocking plate 20 fixed to the upper edge of the guide tube 17.

Next, in order to apply downward pressure to a desired one of the stamped bodies 13,
The engraving hammer 21, which is indirectly held on the upper turret base plate 3a at its upper position, will be described in detail with reference to FIGS. 2, 4 to 6, and 9 to 11.

As shown in the figure, on the upper turret board 3a, there are four wooden supports 22, 22. - are erected, and the four pillars 22
A support plate 24 in the form of a rectangular flange with a hole 23 formed in the center is fixed at four corners to the upper part of the holder. The hole 23 of the support plate 24 has a hollow cylindrical flange shape,
A guide holder 26 having an internal spline 25 cut along the axial direction on the inner peripheral surface is rotatably held, and a worm wheel 27 is attached to the lower outer periphery of the guide holder 26 by a key 28. It is fixed. Further, the guide holder 26 sandwiches the support plate 24 between the flange of the flange and the upper surface of the worm wheel 27,
Although it can rotate freely, it is prevented from sliding up and down.

On the other hand, the four wooden supports 22 are mounted on the upper turret board 3a.
The center of the diagonal line is concentric with the center of the diagonal line of the upper turret board 3a, and the spacing is narrower than the spacing of the support posts 22 only along the fan-shaped circumferential direction of the upper turret board 3a. 4 short wooden guide pillars 29, 29. A cylinder holder 30 in the form of a rectangular flange is provided on the guide post 29 in the form of a rectangular flange at an intermediate position between the guide holder 26 and the guide cylinder 17 on the rotary disk 4. It is fitted in such a way that it can move up and down.

Further, the guide 33, which has a cylinder 31 at the upper part and a shaft part 32 at the lower part, comes into contact with the cylinder holder 30 at the flange-like flange 31a formed at the lower part of the cylinder 31 and rotates. It is held movably, and the shaft portion 32 is fitted and held in the hollow portion of the rotary disk 4 so as to be movable up and down.

Furthermore, an outer spline 34 is cut on the outer circumferential surface of the cylinder 31 to fit with the inner spline 25 cut in the guide holder 26 .

Furthermore, on the lower surface of the cylindrical body 31, only the portion facing the head 13a of one stamped body 13 at the stamping position is provided with a protruding portion 21a (see FIG. 2 and As shown in FIGS. 4 to 6, a stamping hammer 21 is provided on the lower surface of the protruding portion 21a. Figure 4(a)
In this case, a hammer protrusion group 35 consisting of three hammer protrusions 35-1, 35-2, 35-3, which are spaced at a constant interval α) and have different heights, is protruded. In the hammer protrusion group 35, the hammer protrusion located in the center is a hammer protrusion 35-2 for medium thickness plate (hereinafter referred to as hammer protrusion 35-2 for normal plate). The hammer protrusions located on the left and right sides (upper and lower in Fig. 4) shown in FIG. 6 with the plate hammer protrusion 35-2 in the center are hammer protrusions 35-3 and 35-1 for thin plate thickness and thick plate thickness, respectively. (hereinafter referred to as a hammer protrusion 35-3 for a thin plate and a hammer protrusion 35-1 for a thick plate). Also, the hammer protrusion group 35
The difference in height of each hammer protrusion is set to correspond to the difference in plate thickness of the workpiece W, and the hammer protrusion 35-1 for thick plate
is the lowest, and the hammer protrusions 35-2 for ordinary plates and the hammer protrusions 35-3 for thin plates are formed in such a manner that their heights increase in the order of the above-described difference in plate thickness.

Moreover, as shown in FIG. 6, the height difference I between the thick plate hammer protrusion 35-1 and the thin plate hammer protrusion 35-3 is
L1 is set to be smaller than the height IL2 of the protrusion 15 of the stamping body 13, and the stamping hammer 2 is
1 descends and one of the hammer protrusions 35 presses downwardly on the protrusion 15 of the stamped body 13, so that other hammer protrusions do not press downwardly on the head 13a of the stamped body 13. It is composed of Further, when the hammer protrusion group 35 presses down the protrusion 15 of the stamped body 13 with any one of the hammer protrusions, another hammer protrusion that descends at the same time comes into contact with the protrusion 15 of the stamped body 13. They are arranged at appropriate intervals so that they do not engage together.

The protruding portion 21a and the hammer protrusion group 35 as described above
The engraved hammer 21, which is formed with a shape of It is fastened.

Therefore, the stamping hammer 2 has an integral structure.
1 and the guide 33 are held on the inner bottom surface of the cylinder holder 30 and are movable up and down while the outer spline 35 of the cylinder 31 is guided by the inner spline of the guide holder 26. , the guide holder 26
When the guide holder 26 is rotated by the engagement of the inner spline with the outer spline 34 of the cylinder body 31, the guide holder 26, the guide 33 and the stamping hammer 21 are rotated.
are constructed so that they can rotate together around an axis.

The stamping hammer 21 and the guide 33 are formed by a compression coil spring 3 which is normally wound around four guide columns 29.
7, the stamping hammer is held at the top dead center position of the stamping hammer, which is pushed up so that the upper surface of the flange of the flange of the cylinder holder 30 comes into contact with the fastening members of the heads of the four guide columns 29. .

On the other hand, the cylinder body 3! A set bolt 38 is screwed onto the shaft portion 32 of the guide 33 inside the center of the guide 33. A sliding member 39, which is held movable up and down, is disposed on the top of the cylinder 31.

Furthermore, a cylindrical stroke damper 40 made of an elastic material such as polyurethane is held between the sliding member 39 and the inner bottom surface of the cylinder body 31 on the shaft of the set bolt 38;
The stroke damper 40 is fitted so as to form a small gap 41 between the outer circumferential surface of the stroke damper 40 and the inner circumferential surface of the cylindrical body 31.

The sliding member 39 is normally held at the top dead center position of the sliding member pushed up by the elasticity of the stroke damper 40 such that the inner bottom surface contacts the lower surface of the head of the set bolt 38.

In addition, in FIG. 2, 42 is a driver insertion hole cut along the axial direction of the cylinder body 31 in order to assemble the port 36 that fastens the stamping hammer 21. Further, at an upper position facing the sliding member 39, the sliding member 39
As mentioned above, the hammer part 7, which can be moved up and down and can be moved down in response to an operation command, is supported concentrically on the stamping machine main body 1.

Next, see FIG. 11 for a turret base rotation control mechanism as a turret base rotation control means for rotating the desired stamp set 6 to a position where its center coincides with the axis of the hammer part 7. and briefly explain.

The above-mentioned turret base rotation control mechanism itself is the same as the conventionally known one, that is, as shown in the figure, a worm wheel fixed to the turret shaft 2 is installed in the lower part of the stamping machine body 1 of the turret shaft 2. A worm 44 that meshes with the worm 43 and is fixed to a driving shaft of a servo motor (not shown) is disposed. Further, the turret base 3 is fixed to the upper part of the turret shaft 2, and the turret shaft 2 and the turret base 3 are configured to rotate as an integral structure. The turret base 3 is rotated around the turret shaft 2 to a position where the center of the desired stamp set 6 coincides with the axis of the hammer part 7 using an appropriate control mechanism or servo motor. and driven by a worm gear.

In addition, 45 in the figure is a die holder.

Next, an engraving hammer rotation control mechanism is provided as an engraving hammer rotation control means for rotating one of the plurality of hammer protrusion groups 35 of the engraving hammer 21 to the engraving position, and a desired engraving body 13 is moved to a desired engraving position. FIGS. 2, 9, and 10 show a rotary sieve rotation control mechanism as a rotation control means for rotating the stamp body to rotate in the stamp direction and transfer it to a desired lower pressure position of one of the hammer protrusion groups 35. This will be explained in detail with reference to the drawings.

As shown in the figure, a servo motor 46 is fixed to the upper part of the turret base 3, which is numbered the same as the upper part of the turret shaft 2, and is concentric with the axis of the turret shaft 2. It is driven by an appropriate control mechanism to rotate the hammer 21 or the rotary disk 4 by a predetermined angle. Further, a driving shaft 47 extends downward from the servo motor 46, and the torque from the servo motor 46 is transmitted to the driving shaft 47.
7. Via a bevel gear mechanism 48, the signal is transmitted to a horizontal drive shaft 49 extending radially outward in a fan shape above the upper turret base plate 3a.

Furthermore, the rotation of the drive shaft 49 is transmitted to two upper and lower shafts via a gear box 50 disposed on the upper turret base plate 3a. The upper shaft is a stamping hammer drive shaft 51, and the lower shaft is a rotary vibration drive shaft 52. A clutch 55 is disposed between the worm shaft 54 supporting the worm 53 (see FIG. 2) that engages with the worm wheel 27 of the guide holder 26 and the stamped hammer drive shaft 51, which is actuated by an operation command. Also, a worm shaft 57 that supports the worm 56 (see FIG. 2) that engages with the worm wheel 11 of the rotary disk 4 and the H rotation m drive shaft 52 is also operated by an operation command. A clutch 58 is provided which is configured to

Moreover, the engraved hammer drive shaft 51 and the rotary vibration drive shaft 5
The two shafts 2 are configured to rotate in the same direction and at the same number of rotations when the drive shaft 49 rotates in the same direction and at the same number of rotations.

Further, the upper and lower clutches 55 and 56 are normally maintained in a completely disconnected state.

Therefore, when the clutch 55 or 58 is actuated by an operation command to maintain the drive connection and the drive shaft 49 is rotated in the same direction and at the same number of rotations by the servo motor 46, the torque is Drive shaft 49, gear box 50, stamped hammer drive shaft 51 or rotary vibration drive shaft 52, right and clutch 55 or 58, respectively
is transmitted to the ohmic shaft 54 or 57 through the worm shaft 54 or 57, causing the worm 53 or 56 to rotate in the same direction and at the same number of rotations. That is, when the drive shaft 49 is rotated in the same direction and at the same rotation speed by the servo motor 46, the stamping hammer 21, which is formed to rotate integrally with the rotary disk 4 or the guide holder 26, Both are configured to rotate in the same direction and by the same angle.

Next, the operation of the embodiment of the present invention configured as above will be explained.

First, before engraving, the workpiece W is fixedly supported by a carriage 8a that is held movably in the X-glaze and Y-axis directions on a positioning device disposed in front of the stamping machine main body 1, and 8, the X-axis and Y-axis directions are controlled and the paper is transported to a predetermined marking position.

It should be noted here that the marking position when positioning the workpiece W at the marking position is the center of the rotary disk 4 that has not been moved to the position where marking can be performed, that is, the axis of the hammer part 7. T-1, T-2, T-3, ++, T shown in FIG. 4(a), which will be explained in detail later, do not mean the mind.
-12 points. In other words, the marking position does not depend on the type of characters to be stamped, but depends only on the direction of the characters to be stamped on T-1, T-2.
,+.

The position is determined to be one of T-12.

In the above-mentioned position, as shown in FIG. A servo motor (not shown) performs a predetermined rotation in response to a first operation command from the mechanism, and torque from this servo motor is transmitted to the turret shaft 2 via the worm 44 and worm wheel 43, and the turret shaft 2 rotates at a predetermined angle around the axis. Rotated. Therefore, as the turret shaft 2 rotates by a predetermined angle, the turret base 3, which is integrally constructed with the turret shaft 2, also rotates by a predetermined angle about the axis of the turret shaft 2, and the desired marking is made. The stamp set 6 holding the body 13 is transferred to a position where its center coincides with the axis of the hammer part 7. Therefore, the stamping set 6 transferred to this position is determined whether the stamping position of the previously positioned workpiece W is any of the stamping bodies 13 held on the rotary disk 4 of the stamping set 6 transferred as described above. They are arranged to face each other so as to sandwich the workpiece W therebetween.

Subsequently, in order to rotate the desired marking body 13 around the axis of the rotary disk 4 and transfer it in the desired marking direction, the clutch 58 shown in FIG. The turret base 3 is placed in the engaged state, and the servo motor 46 located on the upper part of the turret base 3 performs a predetermined rotation. The torque from this servo motor 46 is transmitted to the rotary sieve drive shaft 52 via the driving shaft 47, the bevel gear mechanism 48, the drive shaft 49, and the gear box 50, and furthermore, the rotation of the rotary sieve drive shaft 52 is It is transmitted to the worm 56 via the clutch 58 and the worm shaft 57, and the worm wheel 11 is rotated by a predetermined angle.

Therefore, the rotary disk 4, which is integrally constructed with the worm wheel 11, is rotated by a predetermined angle around the shaft portion 32 of the guide 33, and as the rotary disk 4 rotates, the rotary disk 4 rotates f.
l! The desired marking body 13 held at 4 is rotationally transferred to a desired marking direction, that is, to a desired marking position.

Note that during the above rotation @4 operation, the stamping hammer drive shaft 5
1 also rotates in the same direction and at the same rotation speed as the rotary sieve drive shaft 52, but since the clutch 55 is completely disconnected, the rotation of the stamping hammer drive shaft 51 does not occur on the worm shaft 54. Therefore, the engraving hammer 21 is not rotated at this time. Further, at the end of the rotation of the rotary disk 4, the clutch 58 is controlled to be completely disconnected from the drive connection and returned to its normal state.

Subsequently, a desired one of the hammer protrusion group 35 of the engraving hammer 21 is rotated to the engraving position, and placed opposite to the protrusion 15 of the desired engraving body 13 that has been rotated in the desired engraving direction. In order to do this, a third operation command from an appropriate control mechanism causes the clutch 55 shown in FIG. 10 to be engaged for driving connection, and the servo motor 46 on the upper part of the turret base 3 performs a predetermined rotation. The torque from this servo motor 46 is transmitted to the engraving hammer drive shaft 51 via the drive shaft 47, bevel gear mechanism 48, drive shaft 49, and gear box 50, and furthermore, the rotation of the engraving hammer drive shaft 51 is It is transmitted to the worm 53 via the clutch 55 and the worm shaft 54, and the worm wheel 27 is rotated by a predetermined angle.

As the worm wheel 27 rotates, the guide holder 26, which is integrated with the worm wheel 27, is also rotated by a predetermined angle around the axis.

Therefore, due to the engagement between the inner spline 25 cut into the guide holder 26 and the outer spline 34 cut into the cylindrical body 31, rotation of the guide holder 26 through a predetermined angle is achieved via the cylindrical body 31 with the stamping hammer. It was communicated to 21,
A desired one of the hammer projections 35 of the marking hammer 21 is rotationally transferred to the marking position.

A desired one of the hammer protrusions 35 of the engraving hammer 21 that has been rotationally transferred as described above is transferred to the protrusion 1 of the desired engraving body 13 that has already been rotationally transferred in the desired engraving direction.
Needless to say, they are placed opposite to each other. In this way, the preparation operation for marking operation is completed.

It should be noted that while the above-mentioned engraving hammer 21 is operating, the rotary disk drive shaft 52 also rotates in the same direction and at the same rotation speed as the engraving hammer drive shaft 51, but since the clutch 58 is completely disconnected from the driving connection, The rotation of the rotary sieve drive shaft 52 is not transmitted to the worm shaft 57, so the rotary disk 4 is not rotated at this time. In addition, the above-mentioned engraved hammer 21
At the end of rotation, the clutch 55 is controlled to return to its normal state in which the drive connection is completely disconnected.

Further, by the operation up to the third operation command, the sliding member 39 in the cylinder body 31 that has been transferred, the stamping body 13 and the stamping hammer 21 that have been rotationally transferred to the stamping position are both at the respective top dead center positions described above. is maintained.

Here, in response to the fourth operation command, the hammer part 7 disposed on the stamping machine main body 1 is lowered in the direction of the finger tip A in FIG. As the hammer part 7 descends, the sliding member 39 is pressed down while resisting the elasticity of the stroke damper 40, and the cylindrical body 3
1 and descends inside the cylinder 31 while being guided by the shaft of the set bolt 38. Due to this descending sliding member 39, the stroke damper 40 initially expands into the gap 41 formed between it and the inner peripheral surface of the cylindrical body 31 and buffers the compression, but eventually the compression coil spring 37 When the pressure reaches a lower pressure state that exceeds the drag limit, the guide 33 is guided by the inner spline 25 due to the engagement between the outer spline 34 of the cylinder 31 and the inner spline 25 of the guide holder 26, and the guide 33 is guided by the inner spline 25. While the cylindrical halter 30 is pressed down against the compression coil spring 37 by the flange 31a formed at the lower part of the shaft 32, the shaft 32 is also lowered while being guided by the hollow part of the rotary disk 4.

Therefore, as the guide 33 is lowered, the cylindrical body 3
The engraving hammer 21 fastened to the lower surface of the engraving body 13 also descends, and a desired one of the hammer protrusions 35 of the engraving hammer 21 touches the protrusion 15 of the desired engraving body 13 that has already been transferred to the engraving position. make contact and apply downward pressure.

Here, the desired stamped body 13 that has been pressed down has its head 13
The bottle 16 installed in the guide tube 17 is guided by the slit 18 formed in the guide tube 17, and moves inside the holding hole 10 while resisting the return spring 19 without rotating left or right and against the return spring 19. The engraving blade 14 comes into contact with the workpiece W at a position indicated by a two-dot chain line after descending in the direction of the intersecting part B.

Then, as the stamping body 13 descends from the time when the stamping blade 14 of the stamping body 13 comes into contact with the workpiece W as described above, an upward pushing force is applied to the stamping body 13 due to the resistance of the workpiece W. . This pushing up force is applied to the stamping hammer 21 and the cylinder body 31.
However, since the sliding member 39 is still under pressure due to the lowering of the hammer part 7, the stroke damper 40 gradually lowers the stamping hammer 21 while absorbing the pushing up force. let

That is, the downward pressure of the engraving blade 14 on the workpiece W is small at the initial time when the engraving blade 14 contacts the workpiece W;
After that, it is configured to gradually increase its effect, so that a beautiful desired engraving can be made, and the engraving blade 1
It also serves to protect the marking blade 4 from sudden fLI and extend the life of the marking blade 14.

After the desired mark is made on the workpiece W in the desired direction as described above, the hammer part 7 rises and returns, and the sliding member 39 is released from the downward pressure state, so that the stroke damper 40 It gradually rises inside the cylindrical body 31 due to its elasticity. At the same time, since the cylinder holder 30 also rises and returns to its original position due to the elastic force of the compression coil spring 37, the flange portion 31a of the flange of the guide 33 is pushed up by the cylinder holder 30, and the guide 33 also rises and returns. do.

Therefore, since the engraving hammer 21 which is fastened to the guide 33 is also raised and returned, the engraving hammer 21
The lower pressure state of the stamped body 13 caused by this is gradually released, and the stamped body 13 rises and returns to its original state due to the elastic force of the return spring 19. In this way, after the marking operation is completed, the marking body 13, marking hammer 21, and sliding member 39 return to their respective top dead center positions and are held there.

Note that, as described above, since the lower pressure mechanism of the stamping body 13 is performed by interposing the sliding member 39 and the stroke damper 40, an appropriate shim or the like is installed between the sliding member 40 and the stroke damper 40. or by replacing the elastic member of the stroke damper 40 with a member having a different elastic force, if used in conjunction with the multi-stage hammer special mention group 35 corresponding to the thickness of the workpiece W as described above, it is possible to make a stamp. It is also possible to vary the downward pressure on the body 13 and the descending height over a wide range, and it is also possible to easily vary the downward pressure and downward pressure of the stamping body 13 over a wide range depending on the thickness and material of the workpiece W. It will also happen.

Next, regarding the operation of the embodiment of the present invention described above, FIG.
With reference to FIGS. 7 and 8, a more specific explanation will be given by way of example.

In order to simplify the explanation below, it is decided as follows.

That is, as shown in FIG. 4(a), the stamps 13 held on the rotary disk 4 are arranged at constant intervals θ (θ=30°) on 12 equally divided points on the same circumference. In these figures, both wheels x-x' and Y-Y' coincide with the X-axis and Y-axis directions of the positioning device 8 for the workpiece W, and the intersection of the two wheels x-x' and Y-Y' O indicates the axis of the hammer part 7. In addition, T-1, T-2, T=3 in the figure
．． m, T-12 are each stamped body 13 when the rotary disk 4 is rotationally transferred so that the center of rotation @4 coincides with the intersection 0.
In this case, the position of the axis of the marking body 13 which is on the X-X' wheel axis and in the X' direction is indicated by T.
-1.

Then, as shown in the figure, starting from the position T-1, the position of the axis of the stamp body 13 is changed to T-1, T-1, clockwise in order.
They are defined as T-2, T-3, m, and T-12.

It is assumed that the characters on the marking blades 14 of each marking body 13 disposed on the rotary disk 4 are oriented vertically toward the center of the rotary disk 4. Therefore, the T-
The character on the engraving blade 14 at position 1 is horizontally stamped to the right, T
The letters -4, T-7 and T-10 are vertically typed downward, horizontally typed to the left, and vertically typed upwards, respectively.
The letters T-2, T-5, and T-9 are respectively slanted downward at 60 degrees to the left, 30 degrees downward to the right, 30 degrees upward to the right, etc., and the desired stamped body!3 is transferred. The position to be stamped, that is, the stamping position, is independent of the type of character to be stamped, and depends only on the vertical direction of the character to be stamped. T-1, T-2, ++, T-
It will be determined at any position of t2.

Furthermore, as shown in FIG.
Then, in clockwise order, the thick plate hammer protrusions 35-1. It is assumed that three hammer protrusions 35-2 for normal plates and three hammer protrusions for thin plates are arranged in this order.

Furthermore, it is assumed that before the start of the marking operation, the rotary disk 4 holding the stamped body 13 of the letter F was at a position other than the intersection 0, and as shown in FIG. 4(a),
The letter of the engraving blade 14 at the position corresponding to T-1 on the rotary disk 4 is F, and the letter corresponding to T-2 is M, and the hammer protrusion 35-2 for ordinary plates among the hammer protrusion group 35 of the engraving hammer 21. It is assumed that is held at a position corresponding to T-1.

Based on the above assumptions, as shown in Fig. 4(b), when stamping the right-facing horizontal stamping shape of the letter F on the workpiece W-2, which is a plain board, the workpiece W-2 must be stamped before stamping. It is moved by the positioning device 8 so that the marking position is T-1.

In this position, the stamp set 6 holding the stamp body 13 of the letter F is rotated by a predetermined angle by the turret base rotation control mechanism so that the center of the stamp set 6 coincides with the intersection O. be transported.

In this state, based on the above assumption, the letter F on the stamping blade 14 of the stamping body 13 at the T-1 position of the rotary disk 4 is in the desired horizontal stamping shape, so the rotation of the rotary disk is controlled. The marking body 13 is not rotated by the mechanism.

Also, based on the above assumption, the engraved hammer 2! Since the normal plate hammer protrusion 35-2 is also at the T-1 position, the engraving hammer 21 is not rotated by the engraving hammer rotation control mechanism.

Here, when the hammer part 7 is lowered, the protrusion 15 of the stamped body 13 with the desired letter F is pressed down by the hammer protrusion 35-2 for ordinary plate of the stamping hammer 21, as shown in FIG. 4(b). Then, the letter F, which is horizontally stamped facing right, is stamped on the workpiece W-2, which is a plain board.

Next, when the rotary disk 4, the stamped body 13 of the letter F, and the hammer protrusion 35-2 for the ordinary plate of the stamping hammer 21 were opened in the above-mentioned state, the following steps were performed as shown in FIG. When stamping the right-facing horizontal shape of the letter F on the thick plate workpiece W-1 in the same manner as above, the thick plate workpiece W-1 is moved to the position T-1 by the positioning device 8 before marking. In this state, since the stamping body 13 has not rotated after the above-mentioned operation, the stamping body 13 is not rotated by the rotary disk surface movement control mechanism.

In this position, the thick plate hammer protrusion 35-1 of the engraving hammer 21 is at a position away from the position T-1 by an angle α in the counterclockwise direction, so the engraving hammer 21 is rotated at a predetermined position by the engraving hammer rotation control mechanism. It is rotated by an angle α in the poison arrow C direction (clockwise) shown in FIG. Therefore, the thick plate hammer protrusion 35-1 is transferred to the position T-1,
The protrusion 15 of the desired stamping body 13 already located at T-1
placed opposite.

Here, in the same way as in the previous operation, the hammer part 7 stamps the right-facing horizontal stamp of the letter F on the thick plate workpiece W-1, as shown in FIG. 7(b). It turns out.

Next, the rotary disk 4 holding the letter F stamp body 13, the letter F stamp body 13, and the thick plate hammer protrusion of the stamp hammer 21 @35-1 are in the above state, that is, as shown in FIG. 7(a).
), if you want to subsequently stamp the vertically downward facing shape of the letter M on the thin plate workpiece W-3 as shown in Figure 8(b), the thin plate workpiece W-3 should be stamped to the right before stamping. -3 is moved by the positioning device 8 so that its marking position is T-4.

In this position, since the stamp set 6 holding the letter M stamp 13 has already been transferred to a predetermined position, the rotation of the stamp set 6 by the turret base rotation control mechanism is not performed. do not have.

In this position, since the stamped body 13 of the letter M is at the position T-2, the rotary disc 4 is rotated by a predetermined angle 2θ, that is, 60°, in the poison arrow direction shown in FIG. 8(a) by the rotary disc rotation control mechanism. (clockwise). Therefore, the letter M
The stamped body 13 is transferred to the downward vertical stamping position of T-4.

Next, the thin plate hammer protrusion 35- of the engraving hammer 21
As shown in FIG. 7(a), the marking hammer 21 is set at a predetermined angle by the marking hammer rotation control mechanism, that is, T -1 to T-4 angle 3θ to T
It is rotated in the poison arrow E direction (clockwise) shown in FIG. 8(a) by the difference of angle 2α clockwise from the −1 position, that is, by the angle (3θ−2α). Therefore, the thin plate hammer protrusion 3-5-3 of the stamping hammer 21 is T-4.
and is placed opposite the protrusion 15 of the desired stamp 13 that has already been transferred to the position T-4.

Here, in the same way as the previous operation, the desired letter M, which is vertically stamped downward, is stamped onto the marking position on the thin plate workpiece W-3 by the hammer part 7, as shown in FIG. 8(b). It will be stamped.

Other characters and other engraving orientations are completely similar to the above, that is, the positioning of the workpiece W need only be selected depending on the engraving orientation of the desired character, and the engraving set 6 holding the engraving body 13 of the desired character is selected. The selection is made only by the turret base rotation control mechanism, and in this state,
Only by the position of the desired character placed previously and the newly specified marking position according to the desired marking orientation.
The desired position of the stamp 13 to be transferred and the predetermined angle to be rotated are determined. Further, in this position, the position of any one of the hammer protrusion groups 35 of the previously placed stamping hammer 21 (that is, the previous stamping position), the newly specified stamping position, and the previous The position to which the marking hammer 21 is to be transferred and the predetermined angle to be rotated are determined by the angle of separation between the hammer protrusion that was placed at the marking position and the newly designated hammer projection.

In this way, one type of characters, numbers, symbols, etc. can be selected quickly and easily, and each character, number, symbol, etc. can be engraved in a horizontal, vertical, diagonal, etc. It is possible to quickly and easily select a pattern, and for each of the above 12 characters, it is also possible to quickly and easily select the lowering level of the stamp in 3 ways depending on the thickness of the workpiece W. Therefore, it can be done.

[Effects of the Invention] As described in detail above, according to the pressurizing device for the stamped body in the stamping device of the present invention, the lower surface of the stamping hammer 21 that presses down the head of the stamped body 13 has a protruding height. A plurality of different levels of hammer protrusion groups 35 are provided, and the protrusion of one protrusion height forming the hammer protrusion group is configured to apply downward pressure to the stamping body 13, so that the downward pressure level of the stamping body can be adjusted in stages. The height can be adjusted accurately. Therefore, the work W
It is possible to significantly reduce the setup time and adjustment time associated with changing the workpiece thickness, and it is possible to perform accurate and clear markings regardless of changes in the thickness of the workpiece, thereby preventing damage to the marking body. This also has the effect of preventing this.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing the schematic configuration of a stamping machine in which a stamping device equipped with a pressurizing mechanism for a stamped body according to the present invention is incorporated into the stamping machine, and FIG. FIG. 3 is an enlarged front view showing a partially broken cross-section of a main part of a pressurizing device for a stamped body according to an embodiment of the invention; FIG. 3 is a perspective view showing the same stamped body;
FIG. 4(a) is a plan view showing the arrangement of the marking bodies held on the rotary disk and the relative position of the protruding portion of the marking hammer and the hammer protrusion for ordinary plates; FIG. 4(b) is a) A plan view showing the orientation of characters stamped on a workpiece of a plain plate at the relative positions shown in the figure, Figure 5 is a perspective view showing the same stamping hammer as above, and Figure 6 shows the multiple steps of hammer protrusions of the same stamping hammer as above. FIG. 7(a) is an enlarged side view showing the height relationship between the protrusion of the stamping body and the protrusion of the stamping body. FIG. 8(b) is a plan view showing the orientation of characters stamped on the thick plate workpiece at the relative positions shown in FIG. 8(a); FIG. , after the hammer protrusion of the engraving hammer and the desired engraving object shown in FIG. Plan view showing related positions, (
b) is a plan view showing the orientation of the characters engraved on the thin plate workpiece at the relative positions shown in (a), and FIG. A plan view of the upper turret board, FIG. 10 is a sectional view taken along the line 1-I in FIG. 9, and FIG. 11 is a sectional view of the turret base for explaining the outline of the turret base rotation control mechanism. be. 13--Engraving body, 21--Engraving hammer, 35- Hammer protrusion group. Patent applicant Norimitsu Nishimura, agent/patent attorney for Anritsu Corporation Figure 2 Figure 7 Figure 8

Claims (1)

[Claims] The stamping body (13) is held above the head of the stamping body (13), which is held so as to be movable up and down, and when the stamping body (13) moves downward, the head of the stamping body (13) is pressed down to make the stamp. Material to be processed in the lower part of the body (
In a pressurizing device for a stamping body in a stamping device equipped with a stamping hammer (21) for stamping on the stamping hammer (W), the lower surface of the stamping hammer (21) is provided with a plurality of groups of hammer protrusions ( 35) is provided in a protruding manner, and when the front marking hammer (21) moves downward, the hammer protrusion group (
The lateral positions of the stamping body (13) and the stamping hammer (21) are adjustable so that the head of the stamping body (13) is pressurized by the hammer protrusion with one protruding height forming the stamping body (13). A pressurizing device for a stamped body in a stamping device, characterized in that: