Engraving system for gravure ink cell volume engraving

Abstract

The utility model relates to an engraving system for gravure ink cell volume engraving, which comprises an automatic measuring camera, a host, a PCIE serial port card, a signal controller, a bus terminal, a contact memory and an engraving head, the host, the PCIE serial port card, the signal controller, the bus terminal, the contact memory and the engraving head are connected in sequence, the host is in communication connection with the automatic measuring camera, and the automatic measuring camera is in communication connection with the signal controller. The contact type memory stores parameters of an ink cell outline, and the host controls the engraving head to engrave the ink cell through the PCIE serial port card, the signal controller, the bus terminal and the contact type memory in sequence according to a control signal. According to the utility model, the PCIE serial port card, the signal controller, the bus terminal, the contact memory, the engraving head and the automatic measurement camera are added, the volume of the ink cell is calculated firstly, then the engraving head is controlled to engrave, and the volume of the ink cell is accurately controlled to ensure that the ink contents among the ink cells are kept consistent.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gravure mesh cell volume engraving, especially to a kind of engraving system for gravure mesh cell volume engraving. BACKGROUND

[0002] Electronic engraving machine is a kind of high-precision numerical control equipment, mainly used for the production of gravure printing plate. It is through electronic control system and mechanical execution mechanism to engrave small mesh cell on the surface of copper roller. These mesh cells are used to store ink and transfer ink to the printing material by pressure. Ink transfer amount is one of the important factors affecting printing quality, and ink transfer amount depends on the size of engraved mesh cell, while mesh cell size is restricted by factors such as engraving process parameters, screening line number, mesh cell angle and engraving needle angle. At present, the main way of engraving mesh cell is screening value engraving, and the value is fixed during the engraving process.

[0003] The invention patent with publication number CN111016476A discloses an ink usage prediction method for solid gravure hug pillow-shaped mesh cell structure. It first sets the hug pillow-shaped shape of the printing dot and the dot size of the exposure dot, and calculates the dot area rate. In etching, according to the etching ratio of mesh cell depth and mesh wall side wall, the reserved size of exposure dot increased due to etching is calculated to determine the actual size of exposure dot. The etched mesh cell is plated with chromium, and the dot area rate of the mesh cell after plating is calculated. The patent cannot accurately calculate the depth and volume of each mesh cell.

[0004] Therefore, it is an urgent problem to provide a calculation method that can accurately calculate the depth and volume of each mesh cell. UTILITY MODEL CONTENT

[0005] The utility model aims at overcoming the defects of the prior art and providing an engraving system for gravure mesh cell volume engraving.

[0006] The purpose of the utility model can be achieved by the following technical solutions:

[0007] According to one aspect of the utility model, an engraving system for gravure mesh cell volume engraving is provided, which comprises an automatic measurement camera, a host computer, a PCI_E serial port card, a signal controller, a bus terminal, a contact memory and an engraving head. The host computer, the PCI_E serial port card, the signal controller, the bus terminal, the contact memory and the engraving head are connected in sequence. The host computer and the automatic measurement camera are communicatively connected. The contact memory stores the parameters of mesh cell profile. The host computer controls the engraving head to engrave mesh cell by sending control signals through the PCI_E serial port card, the signal controller, the bus terminal and the contact memory in sequence.

[0008] As a preferred technical scheme, the system further comprises a camera interface device, which is in communication connection with the automatic measurement camera, the contact memory and the bus terminal respectively.

[0009] As a preferred technical scheme, the camera interface device comprises an image receiving port, which is in communication connection with the automatic measurement camera.

[0010] As a preferred technical scheme, the camera interface device further comprises an image output port, and the camera is in communication connection with the host through the image receiving port.

[0011] As a preferred technical scheme, the camera interface device further comprises an illuminating lamp port and an illuminating lamp, and the illuminating lamp port is connected with the illuminating lamp.

[0012] As a preferred technical scheme, the camera interface device further comprises a power supply interface, which is connected with the automatic measurement camera.

[0013] As a preferred technical scheme, the camera interface device further comprises a bus terminal control port, and the bus terminal is in communication connection with the host through the bus terminal control port.

[0014] As a preferred technical scheme, the camera interface device further comprises a contact memory communication port, which is in communication connection with the contact memory.

[0015] As a preferred technical scheme, the system further comprises a contact memory reader-writer, and the contact memory communication port is in communication connection with the contact memory reader-writer through the contact memory.

[0016] As a preferred technical scheme, the engraving head comprises a motor and an engraving needle.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The utility model discloses add PCI_E serial port card, signal controller, bus terminal, contact memory, engraving head and automatic measurement camera, first calculate the volume of net hole, then control engraving head and engrave, accurately control the volume of net hole, to ensure that the ink content between net hole remains consistent.

[0019] 2. The utility model discloses set up contact memory, be used to store various parameters when calculating net hole, carry out data interaction through physical contact, ensure the security and reliability of data.

[0020] 3. The utility model discloses further set up camera interface device, realize the interaction of data through various interfaces on the camera interface device, ensure the security and reliability of data.

[0021] 4. The PCI_E serial port card provides a high-speed data transmission channel to ensure real-time transmission of engraving data; the signal controller is responsible for receiving engraving instructions from the computer and converting them into control signals to control the motion trajectory, engraving depth and speed of the engraving head; the signal controller acts as a relay node for signal transmission to ensure stable transmission of signals in the entire system. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The system workflow schematic diagram of the utility model;

[0023] Figure 2 The identification process effect diagram of the utility model;

[0024] Figure 3 The connection schematic diagram of the camera interface device of the utility model. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the utility model.

[0026] "Mesh hole" refers to the tiny pits on the surface of the printing plate. These pits are used to store ink, and when printing, ink is transferred from the pits to the printing material to form images or text. The depth and shape of the mesh hole will affect the printing effect. The current main way to engrave mesh holes is to engrave mesh values. In the engraving process, the value is fixed and unchanged. These mesh hole shapes are in the form of circles, and the shape is single, making it difficult to achieve complex mesh point structures; the depth control of the mesh hole is difficult, and in actual engraving, the problem of uneven depth is prone to occur.

[0027] In view of the above problems, the present application provides a kind of engraving system for gravure cell volume engraving;The utility model discloses that PCI_E serial port card, signal controller, bus terminal, contact memory, engraving head and automatic measurement camera are newly added, the volume of cell is calculated first, then engraving head is controlled to engrave, the volume of cell is accurately controlled, to ensure that the ink content between cell remains consistent.The utility model is provided with contact memory, which is used to store various parameters when calculating cell, and data interaction is carried out through physical contact, to ensure the safety and reliability of data.The utility model is also provided with camera interface device, and various interfaces on the camera interface device are used to realize data interaction, to ensure the safety and reliability of data.The PCI_E serial port card of the utility model provides a high-speed data transmission channel, to ensure the real-time transmission of engraving data;Signal controller is responsible for receiving engraving instructions from computer and converting them into control signals to control the movement trajectory, engraving depth and speed of engraving head;As a relay node for signal transmission, signal controller ensures stable transmission of signals in the entire system.

[0028] Embodiment 1

[0029] As shown in Figure 1 and Figure 2 , an engraving system for gravure cell volume engraving, characterized by comprising an automatic measurement camera, a host computer, a PCI_E serial port card, a signal controller, a bus terminal, a contact memory and an engraving head, the host computer, the PCI_E serial port card, the signal controller, the bus terminal, the contact memory and the engraving head are connected in sequence, the host computer and the automatic measurement camera are communicatively connected, the contact memory stores the parameters of the cell profile, and the host computer controls the engraving head to engrave the cell by sequentially passing the control signals through the PCI_E serial port card, the signal controller, the bus terminal and the contact memory.

[0030] The system further comprises a camera interface device, which is communicatively connected to the automatic measurement camera, the contact memory and the bus terminal.

[0031] The camera interface device comprises an image receiving port, which is communicatively connected to the automatic measurement camera.

[0032] The camera interface device further comprises an image output port, and the camera is communicatively connected to the host computer through the image receiving port.

[0033] The camera interface device further comprises an illuminating lamp port and an illuminating lamp, and the illuminating lamp port is connected to the illuminating lamp.

[0034] The camera interface device further comprises a power supply interface, which is connected to the automatic measurement camera.

[0035] The camera interface device further comprises a bus terminal control port, and the bus terminal communicates with the host computer through the bus terminal control port.

[0036] The camera interface device further comprises a contact memory communication port, and the contact memory communicates with the contact memory through the contact memory communication port.

[0037] The system further comprises a contact reader / writer, and the contact memory communicates with the contact reader / writer through the contact memory communication port.

[0038] The engraving head comprises a motor and an engraving needle.

[0039] In this embodiment, the PCI_E serial port card is used to connect the computer and the control system of the electronic engraving machine, providing a high-speed data transmission channel to ensure real-time transmission of engraving data.

[0040] The signal controller is responsible for receiving engraving instructions from the computer and converting them into control signals to control the motion trajectory, engraving depth, and speed of the engraving head.

[0041] The bus terminal serves as a relay node for signal transmission, ensuring stable transmission of signals throughout the system, connecting the signal controller, Touch Memory module, and engraving head.

[0042] The Touch Memory contact memory is used to store engraving parameters such as cell size, depth, and engraving path, and interacts with the reader / writer through physical contact to ensure data security and reliability.

[0043] The high-precision engraving head uses high-precision motors and engraving needles to ensure the precision of cell engraving, enabling uniform engraving of small cells and ensuring consistent ink content.

[0044] High-precision engraving: The high-precision engraving head and precise control system ensure that the size and depth of each cell are consistent.

[0045] Data security: Touch Memory interacts with data through physical contact, preventing data tampering or theft.

[0046] Convenient operation: Engraving parameters are stored in Touch Memory, allowing for quick and easy calling and switching.

[0047] Strong adaptability: The system can flexibly adjust engraving parameters according to different printing needs.

[0048] Traceability: Parameters and results of each engraving can be recorded and stored, facilitating quality traceability and process optimization.

[0049] The connection method of the camera interface device is as followsFigure 3 As shown, USB in receives images transmitted from the high-speed camera and transmits them to the carving control software through USB A, LED power X11 is responsible for illuminating the high-speed camera, L-X1 and L+X1 supply power to the motor of the high-speed camera, trig+ and trig- supply power to the proximity limit switch of the high-speed camera, A130 is a bus terminal control signal, trigger x10 is a high-speed camera signal line, touchmemory X12 is a signal line of the contact memory chip of the high-speed carving head. Camera interface is a camera interface device, and TM is a touch memory.

[0050] Embodiment 2

[0051] The calculation method of the volume of the net cavity specifically comprises:

[0052] S1, first sketch the outline of the net cavity, disperse the outline into a plurality of outline points, and the adjacent outline points are apart from each other by a first preset range;

[0053] S2, a coordinate system is established at the center of the outline, and the coordinates of the outline points are measured by using an automatic measuring camera according to the origin of the coordinate system;

[0054] S3, the outline is divided into a plurality of regions by a second preset range;

[0055] S4, the coordinates of the outline points in the same region are fitted into an equation, the area of the region is obtained by integration, and the volume in the region is obtained according to the depth;

[0056] S5, the volumes of different regions of the net cavity are added, and finally the volume of the net cavity is obtained.

[0057] The equation adopts polynomial fitting, and the formula is as follows:

[0058] y=a n x n +a n-1 x n-1 +…+a1x+a0

[0059] n is the number of polynomials, a n is the coefficient, x is the horizontal coordinate of the outline point, and y is the fitting equation of the outline in the region.

[0060] By using the least square method, the coordinates of the outline points are determined by constructing an error square sum function and taking the partial derivative to determine the coefficients a n of the polynomial.

[0061] The area S has the following formula:

[0062]

[0063] c is the longitudinal coordinate of the starting point of the area, b is the longitudinal coordinate of the end point in the area, x is the horizontal coordinate of the profile point, and y is the fitting equation of the profile in the area

[0064] The magnifying lens of the automatic measurement camera is M10 / 0.25.

[0065] In this embodiment, the automatic measurement camera is used to take the mesh hole and draw the profile of the mesh hole. The accuracy of the profile is ensured to ensure the accuracy of the subsequent calculation.

[0066] The automatic measurement camera is used to take the mesh hole and draw the profile of the mesh hole. The accuracy of the profile is ensured to ensure the accuracy of the subsequent calculation.

[0067] Since the pattern of the mesh hole is symmetrical, only one side of the equation needs to be calculated when performing integral operation, and the overall volume can be calculated by multiplying 2. The origin of the coordinate system is set at the center of the mesh hole, and the x-axis and y-axis are set in the horizontal and vertical directions respectively. After drawing the profile, the profile curve is discretized into a plurality of profile points, and the distances of the profile points from the x-axis and y-axis are measured by the automatic measurement camera to obtain the coordinates of the profile points. Since the profile curve is irregular and is affected by the curved part, it cannot be accurately calculated. The profile curve is divided into multiple segments to facilitate equation fitting and improve accuracy. By adjusting the first preset range and the second preset range, the accuracy of the equation can be changed to better reflect the profile curve. Then the area of each region is calculated separately, and the volume of the region is calculated according to the preset depth. The volumes of the regions are added to obtain the volume of the mesh hole.

[0068] In order to improve the calculation accuracy, the range of each region and the number of profile points in the region are adjusted. The smaller the range of a single region and the more the number of profile points, the better the curve trend can be reflected, and the better the mesh hole profile can be restored to fit the actual profile, so that the calculation result can better reflect the actual situation.

[0069] In order to improve the calculation accuracy, the range of each region and the number of profile points in the region are adjusted. The smaller the range of a single region and the more the number of profile points, the better the curve trend can be reflected, and the better the mesh hole profile can be restored to fit the actual profile, so that the calculation result can better reflect the actual situation.

[0070] The mesh hole profile is a symmetrical graph. The first preset range is smaller than the second preset range. The first preset range is 1mm, and the second preset range is 10mm. The difference between the longitudinal coordinates of the outermost profile points is equal to the value of the second preset range.

[0071] In the embodiment, the cell profile is a symmetric pattern, and the first preset range is smaller than the second preset range, so that multiple profile points can be fitted in the same region, and the more the profile points, the more the fitted equation conforms to the actual situation, and the difference between the ordinate of the outermost profile point is equal to the second preset range value, which means that the starting point and the ending point in the same region are fitted by the profile points, and the curve can be better reflected.

[0072] The above merely describes the specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An engraving system for engraving of recessed grid cell volumes, characterized in that The system comprises an automatic measuring camera, a host, a PCI_E serial port card, a signal controller, a bus terminal, a contact memory and an engraving head, which are connected in sequence, the host and the automatic measuring camera are in communication connection, the contact memory stores parameters of the well pattern, the host controls the engraving head to engrave the well pattern by sending control signals to the PCI_E serial port card, the signal controller, the bus terminal and the contact memory in sequence.

2. An engraving system for engraving of recessed grid cell volumes according to claim 1, characterized in that The system further comprises a camera interface device, which is in communication connection with the automatic measuring camera, the contact memory and the bus terminal respectively.

3. An engraving system for engraving of recessed grid cell volumes according to claim 2, characterized in that The camera interface device comprises an image receiving port, which is in communication connection with the automatic measuring camera.

4. A system for engraving a recessed web cell volume according to claim 2, wherein, The camera interface device further comprises an image output port, and the camera is in communication connection with the host through the image receiving port.

5. A system for engraving the volume of a recessed net cavity according to claim 2, wherein The camera interface device further comprises an illuminating lamp port and an illuminating lamp, which are connected.

6. A system for engraving a recessed web cell volume according to claim 2, wherein, The camera interface device further comprises a power supply interface, which is connected with the automatic measuring camera.

7. A system for engraving a recessed web cell volume according to claim 2, wherein, The camera interface device further comprises a bus terminal control port, through which the bus terminal is in communication connection with the host.

8. A system for engraving a recessed web cell volume according to claim 2, wherein, The camera interface device further comprises a contact memory communication port, which is in communication connection with the contact memory.

9. A system for engraving a recessed web cell volume according to claim 8, wherein, The system further comprises a contact reader / writer, and the contact memory communication port is in communication connection with the contact memory through the contact reader / writer.

10. A system for engraving a recessed web cell volume according to claim 1, wherein, The engraving head comprises a motor and an engraving needle.

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