CN112666801A - Plate width detection method and device - Google Patents
Plate width detection method and device Download PDFInfo
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- CN112666801A CN112666801A CN202011624634.6A CN202011624634A CN112666801A CN 112666801 A CN112666801 A CN 112666801A CN 202011624634 A CN202011624634 A CN 202011624634A CN 112666801 A CN112666801 A CN 112666801A
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Abstract
The invention discloses a plate width detection method and a plate width detection device, wherein the method comprises the steps of respectively arranging a first detection tool and a second detection tool on two sides of the plate in the width direction; executing a plate feeding action, enabling one end of the plate in the width direction to be close to or abut against the first detection tool, then moving the plate to the direction close to the second detection tool, and stopping when the second detection tool detects the other end of the plate; and comparing the moving distance of the plate with a set plate width error range, and judging whether the plate width is correct or not. The invention realizes the detection of the width of the plate material, can prevent the plate material with wrong size from being loaded on the plate conveying mechanism of the machine, and has low cost and high applicability.
Description
Technical Field
The invention relates to a plate specification detection scheme, in particular to a plate width detection method and device.
Background
In terms of the type of exposure, CTP (Computer to Plate) devices can be currently classified into three major types, i.e., inner drum, outer drum, and flat Plate, and most used are inner drum and outer drum. The inner drum type is mainly used for large-format printing plates such as newspapers and the like; the outer drum is suitable for heat-sensitive plates; the platform type is particularly suitable for aluminum plate bases.
External drum imaging uses a cylinder as the drum that holds the plate, the plate being clamped and wrapped around the cylinder until it comes to rest due to centripetal forces causing vibrations in the cylinder, and the laser light impinges on the plate as it rotates with the cylinder.
At present, the mainstream external drum type CTP product can be compatible with plates of various specifications. However, the plates of different specifications have different lengths and widths. For plates with different widths, most machines adopt a manual-assisted semi-automatic method to plate, so that the plates can be centered relative to the roller through manual adjustment. The roller is provided with clamping devices for fixing the plate head and the plate tail, which are respectively called a head plate clamp and a tail plate clamp. For plates with different lengths, the corresponding positions of the tail clamp are different when the plates are printed. Before plate making, a user needs to adjust the position of the tail clamp according to the specification of a plate making plate to adapt to the length of the plate. After the adjustment of the tail clamp is finished, the conventional CTP equipment requires a user to strictly print according to the set plate specification, and once the plate specification is wrong, printing failure can be caused, the printed plate can be scrapped due to deformation, the user must manually take down the scrapped plate, the machine state is restored again, and the correct plate is replaced and printed again.
Therefore, it is necessary to perform plate specification detection during the plate feeding process to prevent the wrong-size plate from being fed onto the plate feeding mechanism of the CTP equipment, which may cause potential damage to equipment-related devices.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a plate width detection method and device.
In order to achieve the purpose, the invention provides the following technical scheme: a plate width detection method comprises the following steps:
s100, respectively arranging a first detection tool and a second detection tool on two sides of a plate in the width direction, wherein the distance between the first detection tool and the second detection tool is larger than the width of the plate;
s200, executing a plate feeding action, enabling one end of the plate in the width direction to be close to or abut against the first detection tool, then moving the plate to the direction close to the second detection tool, and stopping when the second detection tool detects the other end of the plate;
s300, comparing the moving distance of the plate with a set plate width error range, and judging whether the plate width is correct or not.
Preferably, the first detection tool and the second detection tool are respectively located at a first origin position and a second origin position in an initial state, in an upper plate process, the first detection tool moves from the first origin position to a first detection position in a direction approaching the plate, the second detection tool moves from the second origin position to a second detection position in a direction approaching the plate, and a distance between the first detection position and the second detection position is greater than a width of the plate.
Preferably, the method further comprises: after the plate feeding action is finished, detecting whether the plate is centered relative to the roller or not, if the plate is not centered, adjusting the position of the plate according to a set plate width correction value to enable the plate to be centered relative to the roller, and simultaneously adjusting a first detection tool to move to a first detection position 'and adjusting a second detection tool to move to a second detection position', wherein the distance between the first detection position 'and the second detection position' is equal to the distance between the first detection position and the second detection position.
Preferably, the process of detecting whether the plate is centered with respect to the cylinder includes: and respectively measuring the distance from the two ends of the plate in the width direction to the side edge of the corresponding roller, if the two distances are equal, judging to be centered, otherwise, judging not to be centered.
Preferably, the distance from both ends of the plate in the width direction to the respective corresponding cylinder side is measured by a surveying and mapping tool.
Preferably, in S300, if the moving distance of the plate is within the plate width error range, the plate width is determined to be correct, and otherwise, if the moving distance of the plate is outside the plate width error range, the plate width is determined to be incorrect.
Preferably, the plate width correction value is determined according to two distance differences between two ends of the plate in the width direction and the side edge of the corresponding roller.
The invention also discloses another technical scheme: the utility model provides a version width detection device, includes first detection instrument, second detection instrument and pushes away version mechanism, first detection instrument and second detection instrument set up respectively in version width direction's both sides, first detection instrument and second detect the width that the interval between the instrument is greater than the version, and the one end of version width direction is close to or the butt under initial condition first detection instrument sets up, it is located the top of version to push away the version mechanism for with the version to the direction that is close to second detection instrument remove to stop after the second detects the other end that the instrument detected the version.
Preferably, a position sensor is arranged in the second detection tool.
Preferably, the first detection tool and the second detection tool are both movably arranged and respectively move and adjust the positions of the first detection tool and the second detection tool relative to the plate.
The invention has the beneficial effects that:
1. according to the invention, a plurality of detection tools are arranged on the existing plate making equipment, so that the plate width of the plate is detected, the cost is low, and the applicability is high. The invention can prevent the plates with wrong sizes from being loaded on the plate conveying mechanism of the machine, thereby avoiding the possibility that the plates with wrong sizes damage related devices of the equipment.
2. The plate centering detection is carried out in the plate width detection process, so that the plate is ensured to be centered and symmetrical relative to the roller as far as possible when the plate is put on the roller, and the tightness of the plate tightly attached to the roller is enhanced.
Drawings
FIG. 1 is a schematic flow diagram of the process of the present invention;
FIG. 2 is a schematic top view of the apparatus of the present invention (the first detecting means and the second detecting means are respectively located at the origin positions);
FIG. 3 is a side view schematic of the structure of FIG. 2;
FIG. 4 is a schematic top view of the apparatus of the present invention (with the first inspection tool and the second inspection tool in the inspection position, respectively);
FIG. 5 is a side view schematic of the structure of FIG. 4;
FIG. 6 is a schematic top view of the apparatus (with the second inspection tool detecting the plate) of the present invention;
fig. 7 is a side view schematic of the structure of fig. 6.
Reference numerals:
10. plate material, 20, a first detection tool, 30, a second detection tool, 31, a position sensor, 40, a first origin position, 50, a second origin position, 60, a first detection position, 70, a second detection position, 80, a roller, 90 and a plate pushing mechanism.
Detailed Description
The technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.
According to the plate width detection method and device disclosed by the invention, the plate width of the plate is detected by mounting the plurality of detection tools on the conventional plate making equipment, the plate with the wrong size can be prevented from being loaded on a plate conveying mechanism of a machine, the cost is low, and the applicability is high.
As shown in FIG. 1, the plate width detection method disclosed by the present invention comprises the following steps:
s100, respectively arranging a first detection tool 20 and a second detection tool 30 on two sides of the plate material 10 in the width direction, wherein the distance between the first detection tool 20 and the second detection tool 30 is larger than the width of the plate material 10.
Specifically, as shown in fig. 1 and 2, the first detecting tool 20 and the second detecting tool 30 are respectively located on two sides of the plate 10 in the width direction, i.e., on the left and right sides of the plate 10 in the drawing, and the first detecting tool 20 is located on the right side of the plate 10 and the second detecting tool 30 is located on the left side of the plate 10. In practice, the first detecting tool 20 and the second detecting tool 30 may adopt a detecting gauge, and an in-position sensor 31 for detecting the plate 10 is disposed in the second detecting tool 30.
In this embodiment, the first detection tool 20 and the second detection tool 30 can move left and right in the width direction of the plate 10. After the apparatus is initialized, the first detection tool 20 and the second detection tool 30 stop at the first origin position 40 on the right side and the second origin position 50 on the left side, respectively. The first origin position 40 and the second origin position 50 are larger than the width of the plate 10.
And S200, executing a plate feeding action, enabling one end of the plate material 10 in the width direction to be close to or abut against the first detection tool 20, then moving the plate material 10 to the direction close to the second detection tool 30, and stopping when the second detection tool 30 detects the other end of the plate material 10.
Specifically, as shown in fig. 4 and 5, during the plate-feeding process, the first detecting tool 20 moves from the first origin position 40 to the first detecting position 60 in a direction approaching the plate 10 (i.e., leftward), the second detecting tool 30 moves from the second origin position 50 to the second detecting position 70 in a direction approaching the plate 10 (i.e., rightward), after the movement, the distance between the first detecting position 60 and the second detecting position 70 is greater than the width of the plate 10, and as described, the difference between the distance between the first detecting position 60 and the second detecting position 70 and the width of the plate 10 (i.e., the distance between the first detecting position 60 and the second detecting position 70-the width of the plate) is defined as a movement amount, which is set to facilitate the plate-feeding of the plate 10, to move the plate 10 between the first detecting position 60 and the second detecting position 70, the plate width detection is realized in combination with the second detection tool 30. In other embodiments, the first detection tool 20 and the second detection tool 30 may not be moved from the origin position to the respective detection positions, and if the origin position is the detection position, the movement is not required.
After the user finishes the plate loading operation, the right side edge of the plate 10 is generally abutted against the first detection tool 20, and after the device recognizes the plate 10, the plate feeding mechanism (not shown) pushes the plate 10 into a fixed plate clamp (not shown) of the roller 80 for fixing.
After the plate feeding operation is finished, whether the plate 10 is centered with respect to the roller 80 can be detected, and if the plate 10 is not centered, the position of the plate 10 needs to be adjusted to be centered with respect to the roller 80 according to the set plate width correction value. Specifically, in this embodiment, a surveying and mapping tool (not shown) is used to measure a first distance between the left side of the plate 10 and the left side of the roller 80 and a second distance between the right side of the plate 10 and the right side of the roller 80, if the two distances are equal, the plate 10 is centered with respect to the roller 80, the position of the plate 10 on the roller 80 does not need to be adjusted, if the two distances are not equal, the position of the plate 10 with respect to the roller 80 needs to be adjusted, and if the first distance is greater than the second distance, the plate 10 is illustrated to be shifted to the right on the roller 80, and the plate 10 needs to be pushed to the left. The plate width correction value is set according to the difference between the first distance and the second distance, if the difference between the first distance and the second distance is set to be +4mm, the plate 10 is deviated to the left relative to the roller 80 and needs to be moved to the right by 4mm for centering, otherwise, if the difference between the first distance and the second distance is set to be-4 mm, the plate 10 is deviated to the right relative to the roller 80 and needs to be moved to the left by 4mm for centering. Of course, the setting of the positive and negative values for the plate width correction value and the movement of moving the plate left and right according to the present invention are not limited to those defined herein, and may be set as desired, for example, when the difference between the first distance and the second distance is set to-4 mm, the plate 10 is shifted left relative to the drum 80.
In the plate centering process, if the position of the plate 10 relative to the roller 80 is adjusted, correspondingly, the positions of the first detection tool 20 and the second detection tool 30 relative to the plate 10 also need to be adjusted again, the first detection tool 20 is adjusted to move to the first detection position 'and the second detection tool 30 is adjusted to move to the second detection position', and after the adjustment, the distance between the first detection position 'and the second detection position' is always equal to the distance between the first detection position 60 and the second detection position 70. If the plate 10 is moved 4mm to the left in the above-mentioned centering process of the plate 10, the first detecting tool 20 should be moved 4mm to the left from the first origin position 40 to reach the first detecting position, and the second detecting tool 30 should be moved 4mm to the left from the second origin position 50 to reach the second detecting position'. And then proceeds to step S300.
S300, comparing the moving distance of the plate 10 with a set plate width error range, and judging whether the plate width is correct.
Specifically, as shown in fig. 6 and 7, the plate pushing mechanism 90 located above the plate 10 pushes the plate 10 to the left, and the plate is stopped when the second detecting tool 30 detects the left side of the plate 10. Comparing the moving distance of the plate 10 with a set plate width error range, and judging whether the plate width is correct: if the plate width is correct, the moving amount of the plate 10 is within the error range of the set plate width, otherwise, if the plate width is incorrect, the moving amount of the plate 10 is outside the error range of the set plate width. In the present embodiment, the plate width error range is set according to the movement amount between the first detecting tool 20 and the second detecting tool 30, specifically, if the movement amount is set to be within the tolerance of ± movement, and if the movement amount is 4mm and the tolerance is 2mm, the plate width error range may be set to be 2mm to 6mm (including the edge values of 2mm and 6 mm). In other embodiments, the right side of the plate 10 may be spaced from the first detecting tool 20, and the corresponding moving amount is set according to the distance obtained by subtracting the right side of the plate from the first detecting tool.
The process of plate width detection according to the invention is described below in a specific embodiment.
After the device is initialized, the first detection tool 20 and the second detection tool 30 stop at the left and right origin positions, respectively, and the distance between the first origin position 40 and the second origin position 50 is 1180 mm. The setting of the plate material parameters is finished, and the plate material breadth is 745mm multiplied by 605mm as an example, namely the plate material width is 745mm, and the plate material length is 605 mm.
In the upper process, the first detection tool 20 and the second detection tool 30 are simultaneously pushed inward from the respective original positions, wherein the second detection tool 30 is pushed rightward by a distance a1 of 217.5mm (i.e., (1180 + 745)/2mm), and the first detection tool 20 is pushed leftward by a distance a2 of 213.5mm (i.e., (1180 + 745)/2-4), that is, the first detection tool 20 travels less than the second detection tool 30 by 4mm (i.e., the movement amount). At this moment, the user finishes the plate feeding action, the right side edge of the plate 10 is arranged close to the first detection tool 20, after the plate 10 is identified by the device, the plate feeding mechanism firstly pushes the plate 10 into the fixed plate clamp for fixation, then the plate pushing mechanism 90 integrally moves the plate 10 to the left side (the movement amount is about 4mm), and the plate pushing is stopped after the in-place sensor 31 of the second detection tool 30 is seen. Considering that the difference between the width directions of the printing plates 10 on the market is not more than 5mm, the plate width recognition given tolerance is set to be +/-2 mm in the embodiment, namely, the error range (between the movement amount and the tolerance) of the plate width is set to be 2 mm-6 mm in the embodiment, namely when the plate pushing mechanism 90 pushes the printing plates 10 to be detected by the in-position sensor 31 of the second detection tool 30 if the pushing amount is within 2mm (including 2mm), or the plate width is reported to be wrong when the pushing amount of 6mm is not recognized by the in-position sensor 31 of the second detection tool 30, the device executes the plate unloading process and warns by software.
After the user finishes the action of printing, if the distance from the two ends of the plate in the width direction to the side edges of the corresponding rollers 80 is measured through a surveying and mapping tool due to the difference of equipment manufacturing, the two distances are found to be unequal, namely the plate 10 is not centered left and right relative to the rollers 80, the left and right positions of the plate 10 can be adjusted to be centered relative to the rollers 80 through the plate width correction value set by software parameters, for example, the plate width correction value is set to be 4 (default is 0, namely the plate is centered), the plate 10 can move 4mm to the right compared with the default position, and vice versa. Correspondingly, in the centered flow of the plate 10, the plate 10 moves 4mm to the left, and correspondingly, the first detecting tool 20 needs to move 4mm to the left from the first origin position 40 to reach the first detecting position, and the second detecting tool 30 needs to move 4mm to the left from the second origin position 50 to reach the second detecting position'. And then the plate pushing mechanism 90 pushes the plate 10 to the left side integrally, and when the second detection tool 30 detects the left side edge of the plate 10, the plate is stopped, and whether the plate width is correct or not is judged.
In addition, as shown in fig. 2 to 7, the plate width detecting apparatus according to the present invention includes a first detecting tool 20, a second detecting tool 30, and a plate pushing mechanism 90, wherein the first detecting tool 20 and the second detecting tool 30 are respectively disposed at two sides of the plate in the width direction, one end of the plate in the width direction is disposed near or in contact with the first detecting tool 20 in an initial state, and the plate pushing mechanism 90 is disposed above the plate 10, and is configured to move the plate 10 in a direction near the second detecting tool 30 and stop when the second detecting tool 30 detects the other end of the plate 10. The working principle and the process of the first detection tool 20, the second detection tool 30 and the plate pushing mechanism 90 can be referred to the description of the above method, and are not described herein again.
Therefore, the scope of the present invention should not be limited to the disclosure of the embodiments, but includes various alternatives and modifications without departing from the scope of the present invention, which is defined by the claims of the present patent application.
Claims (10)
1. A plate width detection method is characterized by comprising the following steps:
s100, respectively arranging a first detection tool and a second detection tool on two sides of a plate in the width direction, wherein the distance between the first detection tool and the second detection tool is larger than the width of the plate;
s200, executing a plate feeding action, enabling one end of the plate in the width direction to be close to or abut against the first detection tool, then moving the plate to the direction close to the second detection tool, and stopping when the second detection tool detects the other end of the plate;
s300, comparing the moving distance of the plate with a set plate width error range, and judging whether the plate width is correct or not.
2. The plate width detection method according to claim 1, wherein the first detection tool and the second detection tool are respectively located at a first origin position and a second origin position in an initial state, the first detection tool is moved from the first origin position to a first detection position in a direction approaching the plate, the second detection tool is moved from the second origin position to a second detection position in a direction approaching the plate, and a distance between the first detection position and the second detection position is larger than a width of the plate.
3. A plate width detection method according to claim 2, further comprising: after the plate feeding action is finished, detecting whether the plate is centered relative to the roller or not, if the plate is not centered, adjusting the position of the plate according to a set plate width correction value to enable the plate to be centered relative to the roller, and simultaneously adjusting a first detection tool to move to a first detection position 'and adjusting a second detection tool to move to a second detection position', wherein the distance between the first detection position 'and the second detection position' is equal to the distance between the first detection position and the second detection position.
4. A plate width detection method according to claim 3, wherein the process of detecting whether the plate is centered with respect to the cylinder comprises: and respectively measuring the distance from the two ends of the plate in the width direction to the side edge of the corresponding roller, if the two distances are equal, judging to be centered, otherwise, judging not to be centered.
5. The plate width detection method according to claim 4, wherein the distances from both ends of the plate in the width direction to the respective corresponding cylinder sides are measured by a surveying and mapping tool.
6. The method as claimed in claim 1, wherein in S300, if the moving distance of the printing plate is within the error range of the printing plate width, the printing plate width is determined to be correct, otherwise, if the moving distance is outside the error range of the printing plate width, the printing plate width is determined to be incorrect.
7. The plate width detection method according to claim 4, wherein the plate width correction value is determined based on two distance differences between two ends of the plate in the width direction and the side of the corresponding roller.
8. The utility model provides a version width detection device, its characterized in that, the device includes first detection instrument, second detection instrument and pushes away version mechanism, first detection instrument and second detection instrument set up respectively in version width direction's both sides, first detection instrument and second detect the width that the interval between the instrument is greater than the version, and the one end of version width direction is close to or the butt under initial condition first detection instrument sets up, it is located the top of version to push away the version mechanism for with the version to the direction removal that is close to second detection instrument to stop after the second detects the other end that the instrument detected the version.
9. A plate width detection apparatus according to claim 8, wherein a position sensor is provided in the second detection tool.
10. A plate width detecting device according to claim 8, wherein the first detecting means and the second detecting means are movably arranged to adjust the position of each of the first detecting means and the second detecting means relative to the plate.
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| CN202011624634.6A CN112666801B (en) | 2020-12-31 | 2020-12-31 | Plate width detection method and device |
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| CN202011624634.6A CN112666801B (en) | 2020-12-31 | 2020-12-31 | Plate width detection method and device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102431276A (en) * | 2011-09-14 | 2012-05-02 | 苏州普莱特机电科技有限公司 | Optical mechanical and electronic integrated computer-to-plate (CTP) machine |
| CN205615154U (en) * | 2016-05-06 | 2016-10-05 | 杭州东信光电科技有限公司 | Direct platemaking machine with version structure about double -deck |
| CN207346697U (en) * | 2017-09-18 | 2018-05-11 | 苏州洛轩无尘设备科技有限公司 | One kind rises top centralising device |
| CN211061452U (en) * | 2019-10-18 | 2020-07-21 | 山东东岳未来氢能材料有限公司 | Fuel cell membrane swelling rate measuring device |
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2020
- 2020-12-31 CN CN202011624634.6A patent/CN112666801B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102431276A (en) * | 2011-09-14 | 2012-05-02 | 苏州普莱特机电科技有限公司 | Optical mechanical and electronic integrated computer-to-plate (CTP) machine |
| CN205615154U (en) * | 2016-05-06 | 2016-10-05 | 杭州东信光电科技有限公司 | Direct platemaking machine with version structure about double -deck |
| CN207346697U (en) * | 2017-09-18 | 2018-05-11 | 苏州洛轩无尘设备科技有限公司 | One kind rises top centralising device |
| CN211061452U (en) * | 2019-10-18 | 2020-07-21 | 山东东岳未来氢能材料有限公司 | Fuel cell membrane swelling rate measuring device |
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