JP2012166488A - Engraving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem with a conventional configuration for moving an engraving unit in a Y-axis direction having a system of rocking the engraving unit relative to the guide rail, wherein a depth of an engraved hole formed by the engraving unit decreases and a shape of the engraved hole changes from a true circle to an ellipse toward increase in a rocking angle, thereby a depth and a shape of an engraved hole become unstable and it becomes difficult to make good-looking letters and symbols.SOLUTION: An engraving device includes: a base 6 which moves in the X-axis direction; a slide member 13 which moves in the Y-axis direction relative to the base; and an engraving unit 3 attached to the slide member. With this configuration, engraving is performed by a constant engraving force while movement of the engraving unit in the Y-axis direction is horizontally carried out. Accordingly, an engraving pin 3g vertically works on an object to be engraved in all positions and it is possible to constantly engrave true holes.

Description

  In the present invention, the marking means is translated in the X-axis direction, and the Y-axis direction is translated perpendicularly to the X-axis direction so that characters, symbols, etc. are imprinted on the surface of the object to be stamped. The present invention relates to a small and portable marking device.

  As a conventional marking device, for example, there is an invention described in Japanese Patent Laid-Open No. 10-181293 (hereinafter referred to as Patent Document 1). This marking device attaches a marking means to an X-axis belt that is moved by rotation of an X-axis motor with respect to an X-axis direction guide rail provided in the casing and shifts in the X-axis direction. The marking means is attached to a Y-axis belt that is moved by rotation of a provided Y-axis motor, and the characters and symbols are stamped by swinging in the Y-axis direction.

  As another conventional marking device, there is an invention described in Japanese Patent Application Laid-Open No. 2008-36680 (hereinafter referred to as Patent Document 2). This marking device attaches marking means to an X-axis direction feed screw that is rotated by an X-axis direction motor, and moves the marking means in the X-axis direction by rotating the X-axis direction feed screw. A mounting table is attached to a Y-axis direction feed screw that is rotated by a Y-axis direction motor, and characters and symbols are imprinted by moving the marking object in the Y-axis direction by rotating the Y-axis direction screw. Met.

Japanese Patent Laid-Open No. 10-181293 JP 2008-36680 A

  By the way, in the above-mentioned patent document 1, since the means for moving the marking means in the Y-axis direction is a method of swinging with respect to the guide rail, the X-axis for shifting the marking means in the X-axis direction. Since the marking means moves to both ends of the X-axis belt (position close to the two rollers that support the X-axis belt), the marking means swings in the swinging motion of the X-axis belt. When a torsional load is applied and the spacing between the marking holes formed by the marking means becomes non-uniform due to this load and the swing angle increases, the shape changes from a perfect circle to an ellipse. As a result, it is difficult to create beautiful characters and symbols.

  In Patent Document 2 described above, marking means is attached to an X-axis direction feed screw that is rotated by an X-axis direction motor, while an object to be stamped is placed on a Y-axis direction feed screw that is rotated by a Y-axis direction motor. Since the mounting table is mounted, the structure becomes complicated and the entire apparatus becomes large, and if the object to be stamped is large, it cannot be mounted on the mounting table. There was a problem that characters and symbols could not be attached to the engine.

  The present invention is intended to solve the above-described problems, and the object is to attach a marking means to a slide member that moves in the Y-axis direction with respect to a base that moves in the X-axis direction. Since the load on the X-axis belt due to the swinging of the conventional marking means is not applied, marking is always performed with the same interval and marking force, and the movement in the Y-axis direction is horizontal movement. It is an object of the present invention to provide a marking device that can always form a perfect circular marking hole by moving vertically to an object at all positions.

  The marking device according to the present invention achieves the above-described object, and the means of claim 1 includes a base movable with respect to a guide member disposed along the X-axis direction, A moving means that moves along the guide member, an X-axis direction motor that drives the moving means, a slide member that is attached to the base so as to be movable in the Y-axis direction, and a parallel arrangement with the guide member And a rotational direction regulating type sliding bearing provided in the base that is movable with respect to the axial rod and regulated in the rotational direction, and the rotational direction regulating type sliding bearing A first Y-axis belt that rotates the shaft rod, a Y-axis motor that drives the first Y-axis belt, and a second Y-axis belt that moves the slide member in accordance with the rotation of the shaft rod of the rotational direction restricting sliding bearing A drive device comprising: and the slide member It is composed of marking means for marking the object to be engraved by moving the marking pin up and down, and moving the base in the X-axis direction and a slide moving in the Y-axis direction with respect to the base The marking means moves in the X-axis direction and the Y-axis direction depending on the member.

  According to a second aspect of the present invention, in the first aspect, the moving means is an X-axis belt rotated by the X-axis direction motor, and the base is attached to the X-axis belt, and the X-axis The base is moved in the X-axis direction along the guide member by rotation of a belt.

  According to a third aspect of the present invention, in the first aspect, the moving unit includes a screw shaft disposed in parallel with the guide member rotated by the X-axis direction motor, and the screw shaft provided in the base. A ball screw composed of a nut on which a ball rolls at the threaded portion of the screw, and the base moves in the X-axis direction along the guide member by moving the nut together with the base by rotation of the screw shaft. It is characterized by that.

  According to a fourth aspect of the present invention, in the first aspect, the rotational direction restricting sliding bearing includes a spline shaft in which a plurality of grooves are formed in a longitudinal direction and arranged in parallel with the guide member, A ball spline that is provided in the ball and enters the groove of the spline shaft and can move with a small frictional resistance in the X-axis direction, and rotates in the rotational direction with a small frictional resistance in the rotational direction via the ball. It is characterized by being.

  According to a fifth aspect of the present invention, in the above-described first aspect, the rotational direction regulation type sliding bearing is provided in the base and the shaft rod having a non-circular cross-section disposed in parallel with the guide member. It is characterized by comprising a receiving member which is movable by surface contact with the shaft rod and rotates in the rotational direction with a small frictional resistance in the rotational direction via a ball.

  According to a sixth aspect of the present invention, in the first aspect, the marking means includes two excitation coils housed in a case, and a U-shaped silicon steel sheet inserted into the iron core insertion hole of the two excitation coils. And a hammer core that can move up and down with respect to the open end of the iron core, and a marking pin that moves up and down as the hammer core moves up and down to mark dots on the workpiece. Features.

  According to a seventh aspect of the present invention, the rotational position sensor for detecting the rotational position of the X-axis direction motor and the Y-axis direction motor in the driving device is attached, and the rotational position from the rotational position sensor and the control circuit are attached. Compared with the rotation position of the motor given to the X-axis direction motor and the Y-axis direction motor, and when the comparison value has shifted, it was compensated for the warning and the stop of engraving and the excess or deficiency of the pulse It is characterized by.

  According to an eighth aspect of the present invention, in the above-described seventh aspect, the rotation position from the rotational position sensor and the X-axis direction motor and the Y-axis direction motor from the control circuit are mounted on the casing to which the driving device is attached. Comparing with the rotation position of the given motor, if there is a deviation in the comparison value, it compensates for warnings or excess or shortage of pulses, or pulses to the X axis direction motor, Y axis direction motor or excitation coil A controller board for stopping signal transmission and a drive circuit board for outputting a signal for driving the X-axis direction motor, the Y-axis direction motor, and the excitation coil by a signal from the controller board are incorporated. And

  As described above, the present invention attaches the marking means to the slide member that moves in the Y-axis direction with respect to the base that moves in the X-axis direction, so that when the marking means moves in the Y-axis direction, Since no load is applied, the stamping pin can always be stamped with the same stamping force and the movement in the Y-axis direction is horizontal. Can be engraved with dots, and characters and symbols engraved on the object to be engraved can be engraved with uniform depth and shape

  Further, as means for moving the base in the X-axis direction, a slide member that moves in the Y-axis direction with respect to the base is moved by a large torque by moving it by rotation of a ball screw. The number of rotations is reduced through the first Y-axis belt and moved with a large torque. Therefore, even when a continuous line image is printed, the marking means moves smoothly in the X-axis direction and the Y-axis direction. It is possible to engrave a simple line drawing.

  Further, the marking means includes two exciting coils housed in the heat radiating case, an iron core in which U-shaped silicon steel plates inserted into the iron core insertion holes of the two exciting coils, and magnetic force generation of the iron core. Since it is composed of a hammer core that can move up and down relative to the part, and a marking pin that moves up and down as the hammer core moves up and down to mark dots on the workpiece, Smooth movement is possible and the iron core is a laminated body of silicon steel plates, so the suction force in the marking direction of the hammer core is increased, the depth of the dots is increased, and clear letters and symbols can be imprinted. It becomes possible.

  In addition, a rotational position sensor for detecting the rotational positions of the X-axis motor and the Y-axis motor in the driving device is attached, and the rotational position from the rotational position sensor and the control circuit give the X-axis motor and the Y-axis motor. Compared to the rotational position of the motor, and when a deviation occurs in the comparison value, warning and stamping are stopped, so that it is possible to prevent many stamped stamped objects from being made, and these By incorporating the control board into the marking device, there is no need for cable wiring to connect the control circuit to the controller board or measures against external noise, and the entire device can be manufactured at low cost. It is.

It is the perspective view seen from the front side of the marking device of the present invention. It is the perspective view seen from the left side of FIG. It is a front view of a marking device. It is the perspective view seen from the lower back side of a drive device part. It is the perspective view seen from the downward front side of the drive device part. It is the perspective view seen from the lower front side which shows the other Example of a drive means part. It is sectional drawing of a marking means. It is a block diagram which shows the control circuit for driving a marking device. It is sectional drawing of a well-known marking means.

Hereinafter, an embodiment of a marking device according to the present invention will be described with reference to FIGS.
Reference numeral 1 denotes a casing, which includes an upper storage chamber in which an X-axis motor 7, a Y-axis motor 10 and a marking device control circuit 2 to be described later are stored, and an X-axis direction and a Y-axis. A lower storage chamber for storing the driving device A for moving the marking means 3 in the direction is formed. As will be described in detail later, the engraving means 3 engraves the object to be engraved by moving the engraving pin up and down by energizing and shutting off the electromagnetic solenoid according to the engraving signal transmitted from the external control device or general-purpose personal computer. Is to do.

  Next, in order to explain the details of the driving device A, a partition plate 1a for partitioning the upper storage chamber and the lower storage chamber is formed, and the marking means 3 is placed in the X-axis direction on the partition plate 1a. A guide rail 4 for guiding is attached. The guide rail 4 is guided so as to be movable in the X-axis direction. The base 6 contains a ball spline 5 which is an example of a rotational direction restricting type sliding bearing described in detail later. An X-axis motor (pulse motor) 7 is mounted in the upper storage chamber, and a drive roller 7 a is mounted on the output shaft of the X-axis motor 7. It protrudes downward from the partition plate 1a.

  A free roller 7b is attached to an end of the partition plate 1a parallel to the guide rail 4, and an X-axis belt (example moving means) is provided between the free roller 7b and the drive roller 7a. A synchro belt) 8 is wound, and a part of the base 6 is locked to the X-axis belt 8.

  Reference numeral 9 denotes a spline shaft that forms a pair with the ball spline 5 and is arranged in parallel with the guide rail 4 and rotatably supported on the left and right plates of the housing 1. 1 to 3, one end of the spline shaft 9 protrudes from the left plate of the housing 1 and is supported by a bearing, and a free roller 9a is fixed to the protruding spline shaft 9. Further, a Y-axis direction motor (pulse motor) 10 (see FIG. 5) is attached to the upper storage chamber 1a of the casing, and a drive roller 10a is attached to the output shaft of the Y-axis direction motor 10, A first Y-axis belt (sync belt) 11 is wound around the free roller 9a.

  The spline shaft 9 is pivotally supported by a ball spline 5 a built in the base 6. Here, the ball spline 5a is publicly known, and when the built-in steel ball is transferred on the groove of the spline shaft 9 and can move in the axial direction, and the spline shaft 9 rotates, the outer cylinder of the ball spline 5a becomes the ball bearing 5b. The shaft 6 is pivotally supported by the base 6 so that it can freely rotate, and the torque is transmitted to the ball spline shaft 5a via the built-in steel ball to rotate together. Accordingly, the base 6 moves on the spline shaft 9 while being guided by the guide rail 4 by the movement of the X-axis belt 8. However, even if the spline shaft 9 rotates, the base 6 is engaged with the guide rail 4. It will not rotate.

  A driving roller 5c is attached to the ball spline 5a. Further, three free rollers 5d are attached to the side surface of the base 6 on the same surface side as the projecting drive roller 5c, and the second Y-axis belt 12 is interposed between the free roller 5d and the drive roller 5c. (Synchronous belt) is wound, and a slide member 13 attached to the upper part of the marking means 3 guided to the linear portion of the second Y-axis belt 12 so as to be movable with respect to the base 6 in the Y-axis direction. The side of is locked.

  Next, details of the marking means 3 attached to the driving device A of the present invention will be described with reference to FIG. Prior to describing the marking device of the present invention, the conventional marking means 14 will be described with reference to FIG.

  An iron core receiver 14a is fixed above the interior of the case (not shown), and a soft iron core 14c incorporating an exciting coil 14b is fixed to the lower portion of the iron core receiver 14a with screws. 14d is an iron core interposed between the hole of the iron core receiver 14a and the coil hole of the exciting coil 14b, and the large diameter portion of the marking pin 14e is inserted into the lower end recess of the iron core 14d. Reference numeral 14f is attached to the lower portion of the case as a pin receiver that slidably supports the lower portion of the marking pin 14e. Reference numeral 14g denotes a spring stretched between the large diameter portion of the marking pin 14e and the pin receiver 14f, and reference numeral 14h denotes an iron core which is cut off from energization to the exciting coil 14b. It is a cushioning material that prevents 14d from returning and repelling.

  In the conventional marking means 14 formed in this way, when the energizing coil 14c is not energized, the marking pin 14f is spring-biased upward by the spring 14h, so that the iron core 14b has the marking pin 14f. It is pushed upward by. In this state, when a pulsed current is applied to the exciting coil 14c, the iron core 14b is lowered by the magnetic force of the exciting coil 14c, so that the marking pin 14f starts to descend and is smaller than the object to be marked (not shown). Engrave dots.

  When the pulse current to the exciting coil 14c is interrupted, the stamping pin 14f is raised by the spring force of the spring 14h, so that the iron core 14b rises and returns to the state shown in FIG. 8, and thereafter, the above operation is repeated. Letters and symbols will be engraved.

  By the way, in the above-mentioned marking means 14, since the exciting coil 14c is wound so as to surround the marking pin 14f, the overall shape of the marking means 14 is a cylindrical or prismatic shape and is a thin shape. In addition, since the exciting coil 14c is a cylindrical single coil, increasing the number of turns to increase the magnetic force results in poor heat dissipation and reduced power, and the core 14c is made of soft iron. Since it is formed, heat is generated due to iron loss, so that there is a problem that the power of the exciting coil 14b is reduced.

Therefore, the marking means 3 used in the marking device of the present invention has the following structure in order to solve the above-mentioned problems. Hereinafter, the details of the structure of the marking means 3 will be described.
3a is a fixing member for fixing to the slide member 13, 3b is a support member formed integrally with the fixing member, and 3c is a case formed of a material with high heat dissipation efficiency attached to the support member 3b. Reference numeral 3d denotes two exciting coils accommodated in the case 3c and arranged at a desired interval, and a silicon steel plate formed in a U shape in the iron core insertion hole of the exciting coil 3d. An iron core 3e in which (a lightweight material) is laminated is inserted.

  3f is a hammer core arranged so as to be movable up and down with respect to the magnetic force generating part of the iron core 3e, 3g has a lower end penetrating the iron core 3e, and passes through the case 3c to become a stamped part 3g1, An intermediate part passes between the two exciting coils 3d arranged adjacent to each other, and an upper end is formed by passing through the hammer core 3f and passing through a hole formed in the fixing member 3a. It is a stamp pin.

  A large-diameter hole 3f1 is formed on the lower surface of the hammer core 3f through which the marking pin 3g is inserted, a large-diameter protrusion 3g2 that can be inserted into the large-diameter hole 3f1 is formed, and the exciting coil 3d A large-diameter disk 3g3 is fixed to the stamping pin 3g located at the upper end of the plate. A spring stopper 3g4 through which the embossing pin 3g can be inserted is fixed to the lower end of the exciting coil 3d. A spring 3h is provided between the large-diameter disk 3g3 and the spring stopper 3g4 to urge the stamping pin 3g upward.

  Next, the operation of the above-described punching means 3 will be described. Since the punching pin 3g is pushed up by the spring 3h as shown in FIG. 6, the large-diameter projection 3g2 of the punching pin 3g becomes large in the hammer core 3f. The hammer core 3f is pushed upward by entering the diameter hole 3f1.

  In this state, when a pulsed current is applied to the two exciting coils 3d, an electromagnetic force is exerted from the upper end of the iron core 3e by the magnetic force of the exciting coil 3d, and the hammer core 3f is resisted against the spring force by an adsorption force. Lower. Since the large-diameter protrusion 3g2 of the embossing pin 3g enters the large-diameter hole 3f1 of the hammer core 3f by the lowering of the hammer core 3f, the embossing pin 3g is lowered, so that the embossed portion of the imprinting pin 3g 3g1 imprints a small dot on an object to be engraved (not shown).

  When the pulse current to the exciting coil 3d is interrupted, the stamp pin 3g is raised by the spring force of the spring 3h, so that the hammer core 3f is raised and returns to the state shown in FIG. 6, and the above operation is repeated thereafter. The letter or symbol will be engraved with.

Next, the marking device control circuit 2 for driving the marking device of the present invention will be described with reference to FIG. The same reference numerals as those used in the above description of the structure indicate the same members, and the description thereof is omitted.
Reference numeral 15 is a dedicated external control device that transmits imprinting data for imprinting characters and symbols, or a control circuit comprising a general-purpose personal computer. Reference numeral 16 is an AC / DC that converts commercial power into DC power (for example, 24 volt DC power). The power source 2a includes a circuit for driving the X-axis direction motor 7 and the Y-axis direction motor 10 incorporated in the marking device of the present invention, and a circuit for driving the excitation coil 3d of the marking means 3 described above. The X-axis direction motor 7, the Y-axis direction motor 10, and the exciting coil 3d are driven by signals from the controller board 2c described later.

  Reference numeral 2b denotes a rotational position sensor for detecting the rotational positions of the X-axis direction motor 7 and the Y-axis direction motor 10 incorporated in the driving device A. Reference numeral 2c denotes information from the rotational position sensor and stored from the control circuit 15. When the motor rotation is obstructed by an unexpected external factor or the like, a warning is immediately generated or the X-axis direction motor 7, the Y-axis direction motor 10, etc. This is a controller board that stops sending drive signals to the exciting coil 3d.

  In this way, the drive circuit board 2a and the controller board 2c are installed at positions close to the X-axis direction motor 7 and the Y-axis direction motor 10, so that sufficient monitoring is possible even if a simple rotational position sensor is used. Cable wiring for connecting the controller board 2c and the drive circuit board 2a, which has been conventionally far away from the outside, and the motors 7, 10 and the exciting coil 3d and measures against external noise become unnecessary, and the entire device can be manufactured at low cost. Is possible. Further, by incorporating appropriate software into the controller board 2c, it is possible to realize a positioning function capable of compensating for the step-out characteristic of the pulse motor at a low cost.

Next, the operation of the driving device A having the above-described structure will be described in which the marking means 3 is moved in the X-axis direction and the Y-axis direction to mark the marking object such as a metal plate with characters and symbols.
Data for marking characters and symbols is sent from the control circuit 15 to the controller board 2c built in the marking device, and the drive circuit board 2a uses the excitation coils of the X-axis direction motor 7, the Y-axis direction motor 10, and the marking means 3 3d starts driving.

  The pulse signal sent to the X-axis direction motor 7, the Y-axis direction motor 10 and the exciting coil 3d is obtained by imprinting a large number of dots on the object to be engraved. Is completed, a pulse signal for driving the X-axis direction motor 7 in a short time, a pulse signal for driving the Y-axis direction motor 10, and the X-axis direction motor 7 and the Y-axis direction motor 10 to mark the next dot. A pulse signal is continuously applied to the exciting coil 3d for imprinting dots at the position positioned by.

  Here, when a pulse signal is sent to the X-axis direction motor 7, the X-axis direction motor 7 rotates by the number of pulse signals, so that the X-axis belt 8 corresponds to the rotation of the X-axis direction motor 7. Starts rotating. Since the base 6 is attached to the X-axis belt 8, the base 6 is guided by the spline shaft 9 and the guide rail 4 and moves in the X-axis direction according to the rotation amount of the X-axis direction motor 7.

  Simultaneously with the movement of the base 6 in the X-axis direction, a pulse signal is also applied to the Y-axis direction motor 10, so that the Y-axis direction motor 10 also rotates by the number of pulse signals. When the Y-axis direction motor 10 rotates, the first Y-axis belt 11 starts to rotate, so the spline shaft 9 rotates, and the second Y-axis belt 12 rotates as the spline shaft 9 rotates. The slide member 13 attached to the belt 12 moves with respect to the base 6 according to the rotation amount of the Y-axis direction motor 10.

  Here, when the base 6 is moved in the X-axis direction, the spline shaft 9 is guided by the structure of the ball spring 5a as described above even if the spline shaft 9 is rotated. Is possible. Further, the slide member 13 can move in the Y-axis direction even when the base 6 is moved in the X-axis direction because the spline shaft 9 is rotated by the first Y-axis belt 11 by the rotation of the Y-axis direction motor 10. It moves in the Y-axis direction via the second Y-axis belt 12.

  By the above-described operation, the base 6 moves in the X-axis direction and the slide member 13 moves in the Y-axis direction, so that the stamped portion 3g1 of the marking pin 3g in the marking means 3 reaches the position for marking the dots of the marking object. Then, since one pulse signal is applied from the controller board 2c to the exciting coil 3d of the marking means 3, the hammer core 3f is attracted to the iron core 3e. As the hammer core 3f is lowered, the embossing pin 3g is lowered, the imprinting pin 3g is lowered, and the embossing part 3g1 gives an impact to the object to be imprinted to imprint a small dot.

  Thereafter, pulse signals corresponding to characters and symbols are sequentially sent out from the controller board 2c by a similar operation, so that a large number of dots are imprinted on the object to be engraved and characters and symbols are imprinted.

  In the above-described embodiment, the case has been described in which characters and symbols are attached by marking dots on the object to be stamped by the marking means 3, but continuous scratches (continuous line drawings) are not stamped. In this case, when the base 6 is moved in the X-axis direction by the X-axis belt 8, it is difficult to create a scratch because the torque by the X-axis belt 8 is small. Further, the first Y-axis belt 11 may be insufficient in torque.

Therefore, another embodiment shown in FIG. 6 will be described as a structure for solving these problems.
A ball screw 17 is supported by the housing 1 in parallel with the guide rail 4. The ball screw 17 is a ball shaft formed by a screw shaft 17 a and a screw portion of the screw shaft provided in the base 6 (not shown). Is composed of a nut with a built-in ball. One end of the screw shaft 17a protrudes from the housing 1, and a free roller 17b is attached to the protruding screw shaft. The free roller 17b is housed and fixed in the housing 1 as X. An X-axis belt 18 (synchronous belt) is wound around a drive roller 7c attached to an output shaft of an axial motor (not shown). Accordingly, the screw shaft 17a rotates as the X-axis belt 18 rotates.

  On the other hand, since the base 6 has a built-in nut (not shown) that is screwed with the screw shaft 17a, the base 6 is guided by the guide rail 4 by the rotation of the screw shaft 17a and the X-axis. Will move in the direction. As described above, the base 6 moves in the X-axis direction by screwing the screw portion of the screw shaft 17a and the nut housed and fixed in the base 6, so that the X-axis belt 8 can be used as in the above-described embodiment. Thus, the torque is larger than the method of moving along with the rotation of the motor, and therefore, when marking is performed with a line drawing by the marking means 3, even if a load is applied to the base 6, the movement in the X-axis direction is performed smoothly.

  Further, in the case of marking a line drawing, a load is also applied to the marking means 3 in the movement in the Y-axis direction. In this embodiment, the rotational direction-regulated slide bearing (the spline shaft 9 in FIG. 6 is rotated). By increasing the outer diameter of the free roller 9a of the first Y-axis belt 11 with respect to the drive roller 10b, the rotational torque of the spline shaft 9 increases, so the rotational torque of the second Y-axis belt 12 also increases. When the line drawing is marked by the marking means 3, even if a load is applied to the slide member 13, the movement in the Y-axis direction is smoothly performed.

  In the embodiment described above, the combination of the spline shaft 9 and the ball spline 5 has been described as the rotational direction regulating type sliding bearing. However, since the ball spline 5 is expensive, it is expensive as a marking device. Become. In view of this, it is advantageous to use an inexpensive known rotational direction regulation type plain bearing instead of the ball spline 5.

  Hereinafter, in order to explain the outline of a known rotational direction regulation type sliding bearing, a shaft rod having a non-circular cross-section disposed in parallel with the guide member 4 and the shaft rod provided in the base 6 will be described. It is configured by a receiving member that can be moved by surface contact and rotates in the rotational direction with a small frictional resistance in the rotational direction via a ball. The ball spline 5 is effective in that it moves by surface contact in the movement of the base 6 in the X-axis direction as compared with the ball spline 5, but the same operation as the ball spline 5 is performed in the rotation direction. .

A drive device 1 housing 2 marking device control circuit 2a drive circuit substrate 2b rotational position sensor 2c controller substrate 3 marking means 3d exciting coil 3e iron core 3f hammer core 3g marking pin 4 guide rail 5a ball spline 6 base 7 X axis direction motor 8, 18 X-axis belt 9 Spline shaft 10 Y-axis direction motor 11 First Y-axis belt 12 Second Y-axis belt 13 Slide member 15 Control circuit 16 AC / DC power supply 17 Ball screw 17a Screw shaft

Claims (8)

A base that is movable relative to a guide member disposed along the X-axis direction; a moving means that moves the base along the guide member; an X-axis direction motor that drives the moving means; A slide member attached to the base so as to be movable in the Y-axis direction, a shaft rod arranged in parallel to the guide member, and movable with respect to the shaft rod and restricted in the rotational direction. A rotational direction restriction type slide bearing provided in the base, a first Y axis belt that rotates the shaft rod of the rotation direction restriction type slide bearing, and a Y axis direction motor that drives the first Y axis belt; A drive device comprising a second Y-axis belt that moves the slide member in accordance with rotation of a shaft rod of the rotational direction restriction type slide bearing;
It is attached to the slide member, and comprises a marking means for marking the object to be stamped by moving the marking pin up and down,
The marking apparatus, wherein the marking means moves in the X-axis direction and the Y-axis direction by movement of the base in the X-axis direction and a slide member that moves in the Y-axis direction with respect to the base.   The moving means is an X-axis belt that is rotated by the X-axis direction motor, and the base is attached to the X-axis belt, and the base is moved along the guide member by the rotation of the X-axis belt. 2. The marking device according to claim 1, wherein the marking device moves in the X-axis direction.   The moving means is a ball screw including a screw shaft arranged in parallel with the guide member rotated by the X-axis direction motor, and a nut provided in the base and on which a ball rolls at a screw portion of the screw shaft, The marking device according to claim 1, wherein the nut is moved together with the base by rotation of a screw shaft so that the base is moved in the X-axis direction along the guide member.   The rotational direction restriction type slide bearing includes a spline shaft arranged in parallel with the guide member and formed with a plurality of grooves in a longitudinal direction, and a ball that enters the groove of the spline shaft provided in the base. 2. The ball spline according to claim 1, further comprising a ball spline that can move with a small frictional resistance in the X-axis direction and that rotates in the rotational direction with a small frictional resistance in the rotational direction. Stamping device.   The rotational direction regulation type sliding bearing is a shaft rod having a non-circular cross section arranged in parallel with the guide member, and is movable in surface contact with the shaft rod provided in the base, and 2. The marking device according to claim 1, further comprising a receiving member that rotates in a rotational direction with a small frictional resistance in the rotational direction via a ball.   The marking means includes two exciting coils housed in a case, an iron core in which U-shaped silicon steel plates are inserted into the iron core insertion holes of the two exciting coils, and an open end portion of the iron core. 2. The marking device according to claim 1, further comprising a hammer core that can be moved up and down, and a marking pin that moves up and down as the hammer core moves up and down to mark dots on the workpiece.   A rotational position sensor for detecting the rotational positions of the X-axis motor and the Y-axis motor in the driving device is attached, and the rotational position from the rotational position sensor and the X-axis motor and Y-axis motor from the control circuit are applied. 2. The marking device according to claim 1, wherein the rotation position of the motor is compared, and when a deviation occurs in the comparison value, the warning, the stop of the marking, and the excess or deficiency of the pulse are compensated.   The rotation position from the rotation position sensor is compared with the rotation position of the motor given to the X-axis direction motor and the Y-axis direction motor from the control circuit to the casing to which the drive device is attached, and the comparison A controller board that compensates for warnings and excess / shortage of pulses when a deviation occurs in the value, stops sending pulse signals to the X-axis direction motor, Y-axis direction motor, and excitation coil, and the controller board 8. The marking device according to claim 7, further comprising: a drive circuit board that outputs a signal for driving the X-axis direction motor, the Y-axis direction motor, and the excitation coil in response to the following signal.

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