JP2000127590A - Marking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a marking device in which a scratch is not caused on a material to be marked in the case of alignment of a marking position and furthermore marking can be performed at high speed. SOLUTION: The marking device consists of a carrier means 1 carrying a work 9 being a sheet and a plate, a marking press 2 applying a mark to the work carried by the carrier means 1, an image processing camera 3 imaging the work 9 carried to the marking position and a controlling means regulating the position of the marking head of the marking press 2 in accordance with an image obtained by the image processing camera 3. Alignment of the marking position is not performed by position regulation on the work 9 side but is performed on the marking head side of the marking press.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marking device for marking a sheet or a sheet material.

[0002]

2. Description of the Related Art Japanese Patent Application Laid-Open No. 4-42991 discloses a marking device for marking a printed wiring board. It is composed of a stamping machine, an introductory conveyor for feeding a wiring board, a width shifting mechanism for aligning the wiring board from the introductory conveyor with a marking position in the stamping machine, a sending conveyor for receiving and sending out the printed wiring board. It is configured as something.

[0003]

In the engraving apparatus, since the positioning to the engraving position is performed by moving the wiring board, which is the object to be engraved, the wiring board often suffers abrasion during the alignment. In addition, it was impossible to shorten the operation time required for the alignment. Further, it has not been possible to automate the switching of types for engraved objects having different thicknesses.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to provide an engraving device that can perform engraving at a high speed without causing scratches on an engraved object during alignment. Another object of the present invention is to provide an engraving apparatus that can automate the switching of types for engraved objects having different thicknesses.

[0005]

According to the present invention, there is provided a conveying means for conveying a work, which is a sheet or a plate material, an engraving machine for engraving the work conveyed by the conveying means, and a conveying machine for conveying the work to the engraving position. An image processing camera for imaging the work
Control means for adjusting the position of the engraving head of the engraving machine based on the image obtained by the image processing camera. The positioning of the marking position is not performed by adjusting the position on the work side, but is performed on the marking head side of the marking machine.

According to the present invention, there is further provided a conveying means for conveying a work as a sheet or a plate material, an engraving machine for engraving the work conveyed by the conveying means, and an image processing for imaging the work conveyed to the engraving position. Adjust the position of the engraving head of the engraving machine based on the camera, the thickness sensor that measures the thickness of the work, and the image obtained by the image processing camera, and adjust the vertical position of the engraving head based on the thickness data measured by the thickness sensor. It is characterized by comprising control means for adjusting. The positioning of the marking position is performed on the marking head side of the marking machine, and the vertical position adjustment according to the thickness of the work is also performed on the marking head side.

[0007] The control means may check the engraved mark on the workpiece based on the result of imaging of the engraved workpiece by the image processing camera, and optimize the next engraving operation based on the check result. desirable. In addition to being able to obtain a stamp of stable quality, even if the stamping head is replaced, adjustment by a person is not required.

The marking machine is provided with a lower die for changing the vertical position by horizontal movement of a wedge type cam, and the vertical position of the marking head is adjusted with respect to the upper surface of the work. Preferably, the adjustment is performed.

The conveying means comprises a plurality of conveyors arranged in parallel, and the distance between the conveyors is variable by the lateral movement of the other conveyor with respect to the fixed conveyor located on one side of these conveyors. When the stamping machine is installed on the side of the fixed conveyor, it is easy to cope with a variety of workpieces having different widths.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to an example of an embodiment. As shown in FIG. 2, this engraving apparatus is a conveyor for conveying a work (engraved object) 9 such as a sheet or a plate material. 1, an engraving machine 2 installed beside the conveyor 1, an image processing camera 3 for imaging a work 9 being conveyed by the conveyor 1, a thickness sensor 4 for measuring the thickness of the work 9 being conveyed by the conveyor 1, Then, the outputs of the image processing camera 3 and the thickness sensor 4 are taken in, and the engraving machine 2
And control means for controlling the conveyor 1.
The conveyor 1 here is of a suction type.

As shown in FIG. 7, a suction pipe 11 connected to a blower 12 is provided below the main frame 10, and an endless belt 13 having suction holes is provided around the suction pipe 11. The certain conveyor 1 adsorbs and transports the work 9 to the lower surface thereof.

In the illustrated example, the three conveyors 1 are arranged in parallel, the works 9 are simultaneously sucked by the three conveyors 1, and the works 9 are simultaneously operated by the three conveyors 1.
As shown in FIG. 6, as shown in FIG. 6, one conveyor 1 is fixedly installed, but the other two conveyors 1 It is installed so that the distance from the fixed-side conveyor 1 can be changed. That is, the two conveyors 1, 1 on the moving side have the nut 15 fixed to the main frame 10, and the nut 15 is screwed to the ball screws 16, 16, respectively. By rotating the ball screw 16 by the motor 17, the conveyor 1 is caused to move laterally, and the rotation transmitting portion from the motor 17 to the two ball screws 16 has different timings with different numbers of teeth. By using the pulleys 18, 18, the moving-side conveyor 1 close to the fixed-side conveyor 1 can be used in the above-described lateral movement.
The lateral movement amount of the distant moving side conveyor 1 is set to be larger than the lateral movement amount.

FIG. 8 shows a suction chamber 6 for transferring a plurality of works 9 stacked on a lifter 7 one by one to a suction type conveyor 1, and a vertical driving device 60 using a cam and a link. The suction chamber 6 that moves up and down adsorbs the work 9 at the time of its descending, and after adsorbing the work 9 adsorbed by the ascending conveyor 1 by ascending, releases the adsorption and releases the next work 9. Prepare for transfer. Note that the suction chambers 6 are provided for the three conveyors 1 respectively, and when the moving side conveyors 1 and 1 are moved sideways, they are simultaneously moved laterally.

A second suction chamber 8 and a blower 85 are provided beside the lifter 7. The second suction chamber 8 sucks and lifts the corners of the stacked works 9 and separates only one sheet by blowing air from the side with a blower 85 in the lifted state.

Of the three conveyors 1, the stamping machine 2 installed beside the fixed conveyor 1 lowers the upper die 21 while supporting the lower surface of the work 9 with the lower die 22 to lower the surface of the work 9. The upper die 21 and the lower die 22, which are the engraving heads, are mounted on a frame 20 installed on an XY table 23, as shown in FIGS. The lower die 22 can be adjusted in the Z-axis direction, that is, the vertical position can be adjusted so that the rotation adjustment about the Z-axis θ can be performed.

The XY table 23 is screwed with ball screws which are driven to rotate by motors 23a and 23b for the X and Y axes, and the X and Y axes are rotated by the motors 23a and 23b.
Change the Y position. The frame 20 provided on the XY table 23 holds a cam 24 having an inclined upper surface slidably in the horizontal direction, and is screwed with a ball screw driven to rotate by a motor 24a. Cam 24
A cam follower 24b hung from the lower mold 22 is in contact with the upper part. The cam 24 performs a horizontal movement by the rotation of the motor 24a, and the lower die 22 that makes the cam follower 24b contact the inclined surface of the upper surface of the cam 24 with the horizontal movement.
Moves up and down. Then, the upper mold 21 is
Actuator (cylinder) 26 for vertical movement
And a motor 25 for correcting θ-axis rotation.

The image processing camera 3 mounted on the marking machine 2 captures an image of the upper surface side of the work 9 transported by the conveyor 1 and transported to the marking machine 2, and the control means captures the image. Upper mold 21 and lower mold 22 based on the image
Is adjusted to align with the work 9. That is, from the image captured by the image processing camera 3, the amount of correction for the positional deviation of the work 9 in the XY directions and the angular deviation about the Z axis θ is obtained, and the position adjustment of the XY table 23 and the rotation adjustment of the upper mold 21 are performed. And do. The control means adjusts the vertical position of the lower mold 22 based on the measurement result of the thickness of the work 9 conveyed by the conveyor 1 by the thickness sensor 4.

FIG. 1 shows an operation flow for the position correction operation. The thickness of the work 9 conveyed by the conveyor (C / V) 1 and stopped at the marking station where the marking machine 2 is installed is measured, the movement amount of the cam (wedge) 24 is calculated, and the work is calculated. The upper die 21 and the lower die 22 are moved in accordance with the position of the work 9 by measuring the position of the work 9 by taking an image of the work 9 and moving the upper mold 21 and the lower mold 22 in accordance with the required relative marking position from the end face of the work 9. The upper and lower positions of the lower mold 22 are adjusted according to the thickness of the upper mold 9 and the upper mold 21 is lowered to perform the engraving.

Since the positioning for the engraving is not performed by the movement of the work 9 but by the engraving machine 2, it is not necessary to adjust the width of the work 9 at the time of the alignment. It does not cause abrasion or the like, and the upper and lower positions of the lower mold 22 that supports the lower surface of the work 9 at the time of engraving are adjusted based on the thickness measurement result of the work 9 by the thickness sensor 4, so that the thickness differs. It is possible to automatically respond to the type change to the work 9.
Further, the processing time is shorter than when the position is adjusted by moving the work 9 side.

After engraving, an image of the engraved print on the work 9 is taken by the image processing camera 3, and the engraved character position, engraved depth,
In addition to checking for flaws and the like around the engraved character to determine pass / fail, based on the result of checking the engraved character position and engraved depth, the position correction amount for the next engraving and thickness measurement result on the work 9 Perform optimization. Therefore, even if replacement of the upper mold 21 and the lower mold 22 occurs,
No human adjustment is required. In addition, the quality of the engraved character depth becomes stable.

[0021]

As described above, according to the present invention, there are provided a conveying means for conveying a work as a sheet or a plate, an engraving machine for engraving a work conveyed by the conveying means, and a work conveyed to an engraving position. And a control means for adjusting the position of the marking head of the marking machine based on the image obtained by the image processing camera. The positioning of the marking position is performed by adjusting the position of the work side. Rather, the work is performed on the side of the marking head of the marking machine, so that there is no abrasion or the like on the work at the time of alignment, and the alignment processing can be performed at high speed.

According to the present invention, there is also provided a conveying means for conveying a work as a sheet or a plate material, an engraving machine for engraving the work conveyed by the conveying means, and an image processing for imaging the work conveyed to the engraving position. Adjust the position of the engraving head of the engraving machine based on the camera, the thickness sensor that measures the thickness of the work, and the image obtained by the image processing camera, and adjust the vertical position of the engraving head based on the thickness data measured by the thickness sensor. Since it consists of control means for adjusting, there is no abrasion on the work at the time of positioning, and high-speed processing is possible, and the vertical position adjustment according to the thickness of the work is also performed on the marking head side In addition, it is possible to automatically cope with the type change depending on the thickness of the work.

[0023] The control means checks the engraved mark on the workpiece based on the result of imaging of the engraved workpiece by the image processing camera, and optimizes the next engraving operation based on the check result. Thus, a stamp of stable quality can be obtained, and even if the stamping head is exchanged, it can be automatically dealt with, so that no manual adjustment is required.

The marking machine is provided with a lower die for changing the vertical position by horizontal movement of a wedge-shaped cam, and the vertical position of the marking head is adjusted with respect to the upper surface of the work. When the adjustment is performed, the adjustment according to the thickness of the work can be performed quickly and.

The conveying means is composed of a plurality of conveyors arranged in parallel, and the distance between the conveyors is variable by the lateral movement of the other conveyor with respect to the fixed conveyor located on one side of these conveyors. When the stamping machine is installed on the side of the fixed conveyor, it is easy to cope with a variety of workpieces having different widths.

[Brief description of the drawings]

FIG. 1 is a flowchart illustrating an operation according to an example of an embodiment of the present invention.

FIG. 2 shows the overall configuration of the above, wherein (a) is a plan view,
(b) is a front view, and (c) is a partial sectional view.

FIG. 3 is a perspective view of the marking machine according to the first embodiment;

FIG. 4 is a perspective view showing a vertical movement and rotation adjustment mechanism of the upper die according to the first embodiment;

FIG. 5 is a perspective view showing a vertical position adjustment mechanism of the lower die of the above.

FIG. 6 is a perspective view showing a horizontal movement mechanism of the suction type conveyor according to the first embodiment;

FIG. 7 is a cutaway perspective view of the suction type conveyor according to the first embodiment.

FIG. 8 is a front view showing a suction type conveyor and a suction chamber of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveyor 2 Stamping machine 3 Image processing camera 4 Thickness sensor 9 Work

Claims (5)

[Claims] 1. A conveying means for conveying a work as a sheet or a plate material, a marking machine for engraving a work conveyed by the conveying means, an image processing camera for imaging the work conveyed to the marking position, Control means for adjusting a position of a marking head of a marking machine based on an image obtained by an image processing camera. 2. A conveying means for conveying a work as a sheet or a plate material, a marking machine for engraving a work conveyed by the conveying means, an image processing camera for imaging the work conveyed to the marking position, A thickness sensor that measures the thickness of the work and a control that adjusts the position of the engraving head of the engraving machine based on the image obtained by the image processing camera and adjusts the vertical position of the engraving head based on the thickness data measured by the thickness sensor And a stamping device. 3. The control means checks the engraved mark on the work based on the image picked up by the image processing camera of the engraved work, and optimizes the next engraving operation based on the check result. 3. The marking device according to claim 1, wherein: 4. An engraving machine is provided with a lower die for changing the vertical position by horizontal movement of a wedge-shaped cam, and the vertical position of the engraving head is adjusted with reference to the upper surface of the work. 3. The marking device according to claim 2, wherein the marking is performed by adjusting the vertical position. 5. The conveying means comprises a plurality of conveyors installed in parallel, and the distance between the conveyors is variable by the lateral movement of the other conveyor with respect to the fixed conveyor located on one side of these conveyors. The marking device according to any one of claims 1 to 4, wherein a marking machine is installed on the fixed conveyor side.