JPS5890970A - Automatic die stamper - Google Patents

Abstract

PURPOSE:To enable to stamp a die on a chassis at an appropriate character interval, by providing a moving amount detercting means which comprises a member to be detected provided with identifying parts at predetermined intervals and a detector for detecting the identifying part and which is relatively moved by a predetermined distance when a die-stamping ring is moved by a predetermined distance span. CONSTITUTION:A suspension block 23, a type-selecting block 32 and a die-stamping 17 are separated from a backing metal 38 through rings 43, 44 by a cylinder 41, and thereafter a die stamper is stopped at a predetermined die-stamping position of the chassis 45. Then, a rod of the cylinder 41 is advanced so that the ring 17 and the backing metal 38 are caused to approach each other by moving the suspension block 23, a signal related to the first digit place of a chassis number is fed to a type-selecting motor 15 through a controller, and a type belonging to the ring 17 is faced to the backing metal 38. At this time, the rotational position of the ring 17 is detected by the detector 37, a signal is fed to the controller, the coincidence between a designated die and a set die is confirmed, and the die is stamped.

Description

[Detailed description of the invention]

The present invention provides an embossing device including an embossing ring having a plurality of engravings on its outer periphery and a pulse motor for moving the printing position by moving the engraving ring and moving the printing position by a predetermined amount.
This invention relates to an automatic stamping device that stamps more accurately. In the conventional automatic stamping device, as shown in FIG. 1, a signal read from a perforated tape 10 by a tape reader 11 is sent to a control device 13 via a decoder 12. This controller 13 then controls the pulse motor 14 for moving the print position.
, character selection motor 15, and embossing motor 16 are driven. Here, the motor 15 selects a desired engraving character by character by rotating the engraving ring 17, and the 11 engraving motor 16 selects the engraving after the engraving is selected by the motor 15. The ring 17 is pressed against the vehicle chassis to make an engraving, and the pulse motor 14 slides the engraving ring 17 to the next printing position after the engraving is completed. However, in the conventional example described above, if the pulse motor 14 goes out of step, an error occurs in the printing position. That is, the pulse motor 14 receives a predetermined number of drive pulses, for example, 292 pulses.

[Accordingly, exactly 292
When the pitch rotates, the engraving ring 17 is one character (73
mm), I decided to move. However, if the pulse motor 14 loses synchronization due to foreign matter entering the device, the embossing ring will stop moving below a predetermined amount of movement, and the spacing between the stamped characters will become uneven. The problem arises that the Further, if it is determined by a separate detection device (not shown) that the stamping position has not advanced by a predetermined value, the production line is automatically stopped. When the line stops in this way, it takes unnecessary time to repair the line, and there is a drawback that productivity cannot be improved. Particularly in current equipment that aims to be unmanned, line stops are a major problem that negatively affects productivity. Therefore, the present invention provides an embossing ring moving means for moving an engraving ring having a plurality of engravings on the outer periphery along a member to be stamped by a predetermined pitch, a character selecting means for determining a desired engraving, and an embossing ring that In an embossing device having an embossing means that presses 3-pressing on the workpiece, in order to correct the printing position and improve productivity in the embossing operation when the pulse motor loses synchronization, A recognition unit is set at a predetermined interval, and a detection unit is provided with a detector for detecting the detection unit and the recognition unit, and a movement amount detecting means for detecting a relative movement when the engraving ring has moved a predetermined pitch at a predetermined interval; control means for operating the stamping means when the detector detects the recognition part while moving the stamping ring by a predetermined pitch, and operating the stamping ring moving means when the recognition unit is not detected; It is something that Hereinafter, the present invention will be described in detail based on the embodiments shown in the accompanying drawings. Fig. 2 is a side view showing one embodiment of the present invention, and Fig.
It is a sectional view taken along the line ■-■ in the figure. A plow guide 22 is attached to the yoke 21, and the suspension block 23 can be slid in the direction H6 in FIG. 2 while being guided by the narrow guide 22. A screw shaft 24 having threads for shifts 1 to 1 is supported by a bearing IJ on this suspension block 23, and 4- Printing position movement in which the printing position is moved by driving the screw shaft 24 and moving the embossing ring 17. The pulse motor 14 is attached to the nut 46 that is screwed onto the screwdriver shaft 24.
The holding block 26 connected to the screw thread V71
~Hang parallel to 24 (puwata) noda shift guide 27.28
The suspension block 23 is provided so as to be slidable in the direction of arrow B with respect to the suspension block 23. As a result of the above, the printing position moving means 4
8 are made up. The holding block 26 also includes a shaft 2 having an eccentric portion.
A bearing 9 is supported, and an embossing motor 16 is connected to the end of the shaft 29. Furthermore, a crank 31 is fitted to the eccentric portion of the shutter 29 to constitute an embossing means 47, and this crank 31 is fitted to the eccentric portion of the shutter 29.
It is connected to the cock 32. The character selection block 32 bears an embossing ring 17 having a plurality of markings on its outer periphery, and is guided by two guides 34 and 35 protruding from the holding block 26 in the direction of the arrow Δ. With the above, stamping means 7! Configure I7. The illustrated character selection means 32 includes a character selection motor 15 and a position confirmation detection device 37 for the embossing ring 17 in order to automatically position the embossing ring 17. The money 38 is attached to one end of the yoke 21 through the bracket 1.
is installed. This pad 38 acts to support the pressing force when pressing the embossing ring 17 against the chassis 45 as the part to be stamped. This figure shows a 1-glue mechanism for ensuring a sufficient distance between the chassis 45 and the chassis 38 to facilitate installation and removal of the chassis 45 between the two.
The nozzle structure 39 includes a cylinder 41 rotatably mounted on the other end of the yoke 21 by a pin 40, and a cylinder 41 connected to the cylinder 41 and extending parallel to the scribal V-lift 24. -42, and links 43 and 44 that are rotatably attached to the yoke 21 and the suspension block 23 via brackets 1 to 42, respectively, and rotatably provided on the shaft 42. In addition, the holding block 26 includes Surin 1-1 as a recognition section.
A slit plate 50 as a member to be detected is provided at a predetermined interval, and the narrow guide 22 is provided with a slit plate 50 as a member to be detected, and the narrow guide 22 has a slit plate 50 that faces the slit 1 of the plate 50 to detect the recognition portion. A light-emitting element 51 and a light-receiving element 52, which serve as containers, are connected to Ha+. The distance between the slits and the slits in the plate 50 corresponds to the distance from one printing position to the next printing position on the chassis 45. and light receiving element 5
The signal from 2 is controlled by 11111 as shown in the wS4 diagram.
3, and the pulse motor 14 is driven by a drive pulse generated by the control device 13 in response to the pulse. The movement amount detection means 53 is configured as described above. Reference numeral 54 indicates an air injection nozzle with its injection port facing the slit plate 50. Next, the operation of the above embodiment will be explained. First, in order to avoid interference between the chassis 45 and the stamping position, The cylinder 41 allows the suspension block 23, character selection block 32 and embossing ring 17 to be connected via links 43 and 44.
Tokin 38 will ask you a preliminary question. Thereafter, this stamping device is stopped at a predetermined stamping position on the chassis 45. Next, by advancing the rod of the cylinder 41, the suspension block 23 is moved until the embossing ring 17 and the addressee 38 come close to each other by a distance of about 10 mm. Therefore, a signal relating to the first digit of the vehicle serial number is sent to the character selection motor 15 via the control device 13, and the characters belonging to the embossing ring 170 are positioned opposite to the address plate 384. On the other hand, the rotational position of the embossing ring 17 at this time is detected by the detection device 37, and this detection signal is sent to the control device 13 to determine whether the designated engraving and the highlighted engraving match. Check whether If the stamp is set as instructed, the stamp motor 16 is activated to rotate the shaft 29 having an eccentric portion. This rotation of the shaft 29 causes the crank 3
The other end of 1 is pushed out in the direction of the pad 38 shown by arrow C. For this reason. The character selection block 32 supporting the embossing ring 17 is guided by the extrusion guides 34 and 35 and moved to the chassis 45.
engraved with a stamp. On the other hand, the engraving motor 16 finishes the engraving and stops the rotation of the shaft 39 at the position where the crank 31 and hence the engraving ring 17 are most retracted with respect to the chassis 45. Next, when the pulse motor 14 receives a predetermined number of drive pulses (for example, 292 pulses) from the control device 13, the motor 14 moves the embossing ring 17 by a predetermined amount. During this time, the character selection motor 15 selects the next mark to be engraved. If the pulse motor 14 rotates smoothly and the holding block 26 moves a predetermined amount, the slit plate 50 will also move accurately in response to this, and the light from the light emitting element 51 will be transmitted to the slit plate 50. The output signal from the light receiving element 52 reaches the light receiving element 52 through the slit and reaches the control device 13, so the control device 13 instructs the stamping motor 16 to perform the stamping operation and performs the second stamping operation. will be carried out. On the other hand, when the embossing ring 17 moves from one engraving position to the next, the pulse motor 14 loses synchronization even though it receives a predetermined number of drive pulses (for example, 292 pulses). In this case, the light from the light-emitting cable 51 does not reach the light-receiving element 52 because the movement of the print link 17 is reduced, so the control unit 13 Output No. 18 is not received from [). In this case, control i1i! The i-position 13 sends drive pulses to the pulse motor 14 one by one. When the light-receiving element 52 outputs an output, that is, when the engraving ring 17 has accurately advanced the predetermined movement distance, the engraving motor 16 etc. are activated to perform the engraving operation, and then the 292-pulse pulse is output again. A drive pulse is sent to the pulse motor 14, and the normal operation described above is repeated. After emitting 292 driving pulses,
Even if the engraving ring 17 does not reach a predetermined position, appropriate engraving is performed without stopping the production line, resulting in improved productivity. However, as shown in -1-, the drive pulse of 292 pulses,
and a considerable number of subsequent pulses (e.g. 27
2 pulses), the light receiving element 52 may not output any output. In such a case, the pulse motor 14 may be out of step, for example, due to the slit or the light emitting element 5.
1. Dust or the like often adheres to the light receiving element 52 and blocks the optical path. Therefore, if the light receiving element 52 does not output even after sending 564 pulses (292 pulses plus 272 pulses), in order to return the engraving ring 17 to the position where it was previously engraved, 564 pulses are sent.
Send a pulse to reverse the pulse motor 14! Ru. After that, the slit plate 50° light emitting element 51. The operation of blowing Corey air onto the nozzle 53 toward the optical path of the light-receiving element 52, etc., and sending 292 pulses worth of drive pulses again is repeated. After repeating the above operation and completing the specified number of strokes, 1
After the stamping of one chassis 45 is completed, the stamping operation for the next chassis 45 is started. Note that, contrary to the embodiment described above, the light emitting element 51. The light-receiving element 52 is attached (and the slit plates 1 to 50 are installed on the narrow guide 22. Figure 11 is a diagram of the output force waveform of the light receiving element 52.The interval between the slits 1 and 1 is 7.3 mm.
The corresponding drive pulse of the pulse motor 14 is 292
The slit width is 11@IIl, and the number of pulses is 40 pulses. Further, the number of pulses corresponding to the length from the center of the slit to the end of the adjacent slit 1- is 272 pulses. The light receiving element 52 is located at the center of one slit, and even though the slit plate 50 has moved by 292 pulses from that position, the light receiving element 52 receives light due to dust etc. As the pulse motor 14 is driven, the slit plate 50 moves.Then, the motor 14 is driven for the 272 pulses.
′! If I, the next pulse causes the light to pass through the slit two places ahead, and it will be engraved at that position, so that it will be engraved by skipping one character. In order to prevent this erroneous stamping, the motor 14 is rotated in the reverse direction when the light receiving element does not output even if 292+272 pulses are applied. Further, in FIG. 6, a series of operations of the embodiment shown in FIGS. 2 to 4 is shown in flowcharts ↑ and -1. In FIG. 12, the motor refers to the pulse motor 14, and the flowcharts 1 to 5 are for one vehicle chassis. Note that when the light-receiving element 52 outputs one output, the marking is performed only once. Further, in the above embodiment, when detecting the moving path of the workpiece with respect to the light receiving element 52, the slits of the slits 1 to 50 are arranged in a straight line. However, the invention is not limited to this, and angle detection may be performed by arranging unique holes corresponding to the slits on a curved line.For example, a disc that interlocks with the embossing ring 17 is provided, and the It is conceivable to provide a unique hole on the circumference so that another light-receiving element receives the light that passes through this hole.In this way, if you count the output pulses from the light-receiving element from a certain state, At that time, it can be automatically determined whether or not the marking facing the chassis 45 is appropriate.The flowchart 1- in this case is basically the same as that shown in FIG. 6. Accordingly, the present invention provides an embossing ring moving means for moving an engraving ring having a plurality of engravings on the outer periphery on a member to be stamped by a predetermined pitch, and a character selection means for determining a desired engraving. , in an engraving device having an engraving means for pressing the engraving ring onto a member, the member to be detected is provided with recognition parts at predetermined intervals, and the recognition parts are detected. a movement amount detecting means for detecting a relative movement by a predetermined interval when the engraving ring moves by a predetermined pitch; Since the control means is provided for activating the stamping means and for operating the stamping ring moving means when the stamping ring is not detected, it is possible to stamp the characters on the vehicle chassis at the correct character intervals.Furthermore, slits or A through hole is formed, and a hole is formed between the member to be detected and the member to be detected. The detection means has a nozzle with a normally closed valve facing the detected member, and a light receiving element detects light while moving the embossing ring by a predetermined pitch. control means for activating the stamping means if the detection is not detected; for operating the stamping ring moving means by a predetermined amount if the detection is not detected; and further for operating the valve after reversing the stamping ring moving means when the detection is not detected. Because of this, it is possible to prevent line stoppages due to equipment failure, and to improve the efficiency of stamping operations and productivity.

[Brief explanation of the drawing]

Figure 1 is a block diagram of a conventional automatic stamping device;
The figure is a side view of one embodiment of the present invention, Figure 3 is a sectional view taken along the l-1r line of Figure 2, and Figure 4 is a block diagram showing another embodiment of the present invention. Figures 5(1) and 5(2) are respectively an enlarged view showing an example of the slit plate and an output waveform diagram of the light receiving element, and Figure 6 is a first-frame diagram showing a series of operations of the -lxl actual example. ]]-Butt・-1~. 13... Control device 14... Pulse motor for moving the printing position 17... Embossing ring 3
2...Character selection means 45...Car chassis as a member to be stamped 47...Stamping means 50...
... Slit plate 51 ... Light emitting element 52.
... Light receiving element 53 ... Movement amount detection means 54 ... Nozzle. Patent applicant Nissan Motor Co., Ltd. Figure 1 Figure 5 (2nd

Claims (3)

[Claims] (1) An engraving ring moving means for moving an engraving ring having a plurality of engravings on its outer periphery along a member to be engraved by a predetermined pitch, a selection means for determining a desired engraving, and In an engraving device having an engraving means that presses GJ against an engraving member, recognition parts are set up at predetermined intervals (the engraving ring is provided with a detector for detecting the detected member and the recognition part at predetermined intervals). 1) If the detector detects the recognition part while moving the relative movement amount detection means and the embossing ring by a predetermined pitch, the embossing means is actuated and if the recognition unit is not detected. A special feature of the invention is that the automatic J.
J marking device. (2) The movement amount detecting means is comprised of a detected member in which slits or through-holes are formed at predetermined intervals, and a light emitting element and a light receiving/lighting element arranged through the detected member. An automatic J] engraving device according to claim 1. (3) An embossing ring moving means for moving an engraving ring having a plurality of engravings on its outer periphery at predetermined pitches along the member to be engraved, and a selection means for determining a desired engraving, etc. An engraving device having an engraving means that presses (pulls) an engraving member, comprising a member to be detected in which slits or through holes are formed at predetermined intervals, and a light-emitting element and a light-receiving element provided through the member to be detected. a moving amount detecting means for moving an embossing ring by a predetermined pitch and moving relative to each other by a predetermined interval every time; If the light-receiving element detects light while moving the engraving ring by a predetermined bit, the engraving means is actuated, and if no light is detected, the engraving ring is moved by a predetermined amount. An automatic stamping device characterized in that the automatic stamping device is further provided with a control means for activating the valve after reversing the stamping ring moving means in some cases.