Calibration method of multi-station displacement printing device and multi-station displacement printing device

Abstract

The invention relates to the technical field of pad printing processing, in particular to a calibration method of a multi-station pad printing device and the multi-station pad printing device. The method comprises the steps that S11, a transfer printing head is controlled to print a transfer printing pattern and a mark pattern corresponding to an ink supply platform to a calibration workpiece in a jig; s12, controlling a camera to shoot a surface pattern of the calibration workpiece; s13, comparing and analyzing the position of the transfer printing pattern or / and the mark pattern on the calibration workpiece with the preset position of the transfer printing pattern or / and the mark pattern; step S14, acquiring the position deviation of the transfer printing pattern, wherein the position deviation comprises an X-axis deviation value, a Y-axis deviation value and a rotation angle deviation value; and S21, the steps from S11 to S14 are repeated until the position deviations of all the pad printing heads are obtained. The problem that in the prior art, due to the fact that transfer printing equipment is adjusted through manual observation and experience, efficiency and precision are poor is solved.

Description

Technical Field

[0001] The invention relates to the technical field of pad printing, in particular to a calibration method for a multi-station pad printing device and the multi-station pad printing device. Background Art

[0002] Printing technology is often used in various fields of daily life. With the rapid development of science and technology, the accuracy and brightness of printing technology are also showing a trend of high standards and diversification. In addition, there is a pad printing technology in printing technology. The principle of pad printing technology is to first make a concave pattern on a steel plate, add ink to the concave pattern, and then use a flexible pad printing head to dip the ink, and transfer it to the product to be printed with the pad printing head, so that the product is printed with a pattern.

[0003] During the pad printing process, in order to avoid the inconsistency and inconsistency of the patterns after multiple pad printing processes, it is necessary to perform positioning and calibration on each pad printing head of the pad printing device before the pad printing process.

[0004] In order to solve the problem of positioning and calibration accuracy in multiple processes, the existing pad printing processing device needs to be manually adjusted through naked eye observation and experience to ensure that the pattern of each pad printing is accurate and aligned. This adjustment method is inefficient and has poor accuracy. Summary of the invention

[0005] The technical problem to be solved by the embodiments of the present invention is to provide a calibration method for a multi-station pad printing device and a multi-station pad printing device, so as to solve the problem in the prior art that the pad printing equipment is adjusted by manual observation and experience, resulting in poor efficiency and accuracy.

[0006] In a first aspect, the present invention discloses a calibration method for a multi-station pad printing device, wherein the multi-station pad printing device comprises a plurality of pad printing heads and a plurality of corresponding ink supply platforms, wherein a pad printing groove is provided on the ink supply platform, wherein a pad printing pattern and at least one marking pattern are provided in the pad printing groove, and the marking pattern is arranged on the peripheral side of the pad printing pattern, and the pad printing patterns of the plurality of ink supply platforms constitute a complete pattern; the method comprises:

[0007] Step S11, controlling a pad printing head to print a pad printing pattern and a marking pattern corresponding to the ink supply platform onto a calibration workpiece in a fixture;

[0008] Step S12, controlling the camera to photograph the surface pattern of the calibration workpiece;

[0009] Step S13, comparing and analyzing the positions of the pad printing pattern or / and the marking pattern on the calibration workpiece with the preset pad printing pattern or / and the marking pattern;

[0010] Step S14, obtaining the position deviation of the pad printing pattern, wherein the position deviation includes an X-axis deviation value, a Y-axis deviation value and a rotation angle deviation value;

[0011] Step S21, repeating steps S11 to S14 until the position deviations of all the pad printing heads are obtained;

[0012] Among them, after the calibration is completed, the multi-station pad printing device is controlled to print a complete pattern on the calibration workpiece on the fixture, the movement of the pad printing head in the X-axis direction is adjusted according to the X-axis deviation value to adjust the X-axis deviation, the movement of the fixture in the Y-axis direction is adjusted according to the Y-axis deviation value to adjust the Y-axis deviation, and the rotation angle of the pad printing head is adjusted according to the rotation angle deviation value to adjust the rotation angle deviation.

[0013] Optionally, the marking pattern is one of a cross mark, a rice mark or a star mark.

[0014] Optionally, there are four marking patterns, which are respectively arranged in four directions perpendicular to each other on the outer circle of the pad printing pattern, and the pad printing pattern is located at the center of the pad printing groove.

[0015] Optionally, the multi-station pad printing device further includes a control panel, a first linear moving module and a second linear moving module, the plurality of pad printing heads are arranged on the first linear moving module, the fixture is arranged on the second linear moving module, and adjusting the movement of the pad printing head in the X-axis direction according to the X-axis deviation value to adjust the X-axis deviation, adjusting the movement of the fixture in the Y-axis direction according to the Y-axis deviation value to adjust the Y-axis deviation, and adjusting the rotation angle of the pad printing head according to the rotation angle deviation value to adjust the rotation angle deviation includes:

[0016] After one of the pad printing heads is adjusted, the current pad printing head returns to the initial position;

[0017] The pad printing head is controlled by the control panel to be adjusted.

[0018] Optionally, controlling the camera to photograph the surface pattern of the calibration workpiece comprises:

[0019] Step S121, controlling the second linear motion module to move the fixture to below the camera to capture the surface pattern;

[0020] Step S122, controlling the second linear motion module to move the fixture back to the initial position;

[0021] Step S123, controlling the second linear motion module to move the fixture to the next pad printing head;

[0022] Step S124, repeating steps S121 to S124 until all the surface patterns printed by the pad printing heads are photographed.

[0023] Optionally, the multi-station pad printing device includes a first sliding assembly, and the first sliding assembly includes a first slider slidably connected to a first slide rail, and a second slider slidably connected to the first slider. After the comparison obtains the deviation between each printed pad printing pattern and a preset pad printing pattern, the method further includes:

[0024] Displaying deviation information of each pad printing head on a control panel;

[0025] The position of the first slider relative to the first slider rail and the position of the first slider relative to the second slider are adjusted according to the deviation information.

[0026] Optionally, when the rotating platform is disposed between the fixture and the linear motion module, the method further comprises:

[0027] The stop position of the jig is adjusted, and the rotation angle of the jig is adjusted by the rotating platform.

[0028] Optionally, after the calibration is completed, controlling the multi-station displacement printing device to print a complete pattern on the calibration workpiece on the fixture includes:

[0029] The pad printing head moves a first distance toward the ink supply platform, and the pad printing pattern is printed on the surface of the pad printing head;

[0030] Wherein, when calibrating the multi-station pad printing device, the pad printing head moves a second distance toward the ink supply platform, and the pad printing pattern and the marking pattern are pad printed on the surface of the pad printing head.

[0031] In the second aspect, the present invention further discloses a multi-station pad printing device, comprising: a base; a pad printing module, a second linear motion module, a rotating platform, a visual component and a controller, wherein the pad printing module is arranged on the base, the pad printing module comprises a first linear motion module, the first linear motion module is connected to a plurality of pad printing heads, and the pad printing heads are used to perform pad printing processing on the workpiece to be processed; the second linear motion module is arranged on the base, and the second linear motion module is located below the pad printing module, the rotating platform is arranged on the second linear motion module, and a jig is provided on the side of the rotating platform away from the second linear motion module, and the jig is used to Place the workpiece to be processed; the visual component includes a camera, a memory and a display screen, the camera is arranged on the second linear motion module or the base, and the fixture can be moved to a position corresponding to the camera, the memory is used to store the pad printing pattern, and the display screen is used to display the pad printing pattern information; the pad printing module, the rotating platform, the second linear motion module and the visual component are electrically connected to the controller respectively; wherein, the first linear motion module can drive the plurality of pad printing heads to move in the Y-axis direction, the second linear motion module can drive the fixture to move along the X-axis direction, and the rotating platform can drive the fixture to rotate.

[0032] Optionally, the pad printing module also includes a frame and multiple first sliding components, the first linear motion module is arranged in the frame, the first linear motion module includes a rotating drive member, a screw rod and a moving platform, the screw rod is transmission-connected to the rotating drive member, the screw rod and the moving platform are threadedly connected, and lifting modules are respectively arranged on opposite sides of the moving platform, the bottoms of the two lifting modules are connected to the first slide rail, the first sliding component is arranged on the side of the first slide rail away from the lifting module, and the pad printing head is connected to each of the first sliding components so that the pad printing head can slide along the extension direction of the first slide rail, or slide along the extension direction perpendicular to the first slide rail.

[0033] Optionally, the first sliding assembly includes a first slider and a second slider, the first slider is slidably connected to the first slide rail, a second slide rail is provided on the side of the first slider away from the first slide rail, the second slider is slidably connected to the second slide rail, the setting direction of the first slide rail is perpendicular to the setting direction of the second slide rail, and the end of the second slider is connected to the pad printing head.

[0034] Optionally, the pad printing module also includes multiple ink components, and the ink components are arranged one by one corresponding to the pad printing heads. The ink components include an ink supply platform, an ink cartridge and a pushing mechanism. The ink supply platform is located on the frame, and the ink cartridge is arranged on the ink supply platform and is slidably connected to the ink supply platform. A pad printing groove is provided on the side of the ink supply platform away from the ink cartridge. The pushing mechanism is arranged on the frame, and the pushing mechanism can push the ink cartridge to the pad printing groove.

[0035] Optionally, the ink assembly also includes a second sliding assembly, the ink supply platform is slidably connected to the frame through the second sliding assembly, the second sliding assembly includes a third slide rail, a plurality of third sliders are slidably connected to the third slide rail, a fourth slide rail is provided on the side of the third slider away from the third slide rail, and a fourth slider slidably connected to the fourth slide rail, the setting direction of the third slide rail is perpendicular to the setting direction of the fourth slide rail, and the ink supply platform is arranged on the fourth slider.

[0036] Compared with the prior art, the calibration method of the multi-station displacement printing device and the beneficial effect of the multi-station displacement printing device provided by the embodiment of the present invention are: a plurality of pad printing heads and an ink supply platform corresponding to the pad printing heads are arranged in the multi-station displacement printing device, and a pad printing groove for storing ink pigment is arranged on the ink supply platform, so that the pad printing head can perform pad printing processing on the calibration workpiece after dipping the pigment. A pad printing pattern and at least one marking pattern are arranged in the pad printing groove, and the marking pattern is arranged around the pad printing pattern. In actual use, the pad printing head is first controlled to move by the multi-station displacement printing device and the pad printing pattern and the marking pattern are simultaneously printed on the outer surface of the pad printing head. The pad printing pattern is used for calibration processing on the calibration workpiece, and the marking pattern is used for positioning and identifying the pad printing pattern. Then, the pad printing pattern and / or the marking pattern on the calibration workpiece are compared with the preset pad printing pattern and / or the marking pattern, and the X-axis deviation, the Y-axis deviation and the rotation angle deviation are obtained by comparison, and then the obtained deviation data is used to accurately adjust the movement of the pad printing head in the Y-axis direction, adjust the movement of the fixture in the X-axis direction, and adjust the rotation angle of the fixture. Then, repeat the above steps until the position deviation of all pad printing heads is obtained. The calibration method of the above multi-station pad printing device can adjust the movement of the pad printing head on the Y axis, the movement of the fixture on the X axis, and the rotation angle of the fixture, so that each pad printing head can be identified and compared with the preset pad printing pattern and / or marking pattern, thereby obtaining the deviation data of each pad printing head, and then accurately adjusting the multi-station pad printing device according to the deviation data, which can improve the precise adjustment ability of the multi-station pad printing device, reduce the occurrence of misalignment and offset during the pad printing process, and improve the accuracy of the multi-station pad printing device during the pad printing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, in which:

[0038] Figure 1 It is a schematic flow chart of a calibration method of a multi-station displacement printing device provided in an embodiment of the present invention;

[0039] Figure 2 is a schematic diagram of a workpiece that has not been processed by the calibration method of the multi-stage displacement printing device;

[0040] Figure 3 It is a schematic diagram of a workpiece during a machining process of a calibration method of a multi-station displacement printing device;

[0041] Figure 4 Schematic diagram of a workpiece processed by the calibration method of the multi-station displacement printing device;

[0042] Figure 5 It is a schematic diagram of a multi-station displacement printing device provided by an embodiment of the present invention;

[0043] Figure 6 is a second schematic diagram of a multi-station displacement printing device provided by an embodiment of the present invention;

[0044] Figure 7 is a schematic diagram of an ink assembly provided by an embodiment of the present invention;

[0045] Figure 8 is a schematic diagram of a first linear motion module provided by an embodiment of the present invention;

[0046] Fig. 9 is a schematic diagram of a first sliding assembly provided in an embodiment of the present invention;

[0047] Fig.10 is a schematic diagram of a second sliding assembly provided in an embodiment of the present invention.

[0048] The reference numerals in the figures are:

[0049] 1000, multi-station shift printing device; 100, base; 200, printing module; 201, first linear moving module; 2011, rotating drive member; 2012, lead screw; 2013, moving platform; 202, printing head; 203, first sliding assembly; 2031, first slide rail; 2032, first slide block; 2033, second slide rail; 2034, second slide block; 204, lifting module; 205, ink assembly; 2051, ink supply level Table; 20511, pad printing tank; 2052, ink cartridge; 2053, driving mechanism; 2054, second sliding assembly; 20541, third slide rail; 20542, third slider; 20543, fourth slide rail; 20544, fourth slider; 206, frame; 300, second linear motion module; 400, rotating platform; 401, fixture; 500, visual assembly; 501, camera; 502, display screen; 503, control panel. DETAILED DESCRIPTION

[0050] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, the preferred embodiments of the present invention are described in detail.

[0051] The embodiment of the present invention provides a calibration method for a multi-station displacement printing device, such as Figure 1 As shown, the multi-station pad printing device 1000 includes multiple pad printing heads 202 and multiple corresponding ink supply platforms 2051. The ink supply platform 2051 is provided with a pad printing groove 20511. The pad printing groove 20511 is provided with a pad printing pattern and at least one marking pattern, and the marking pattern is arranged on the peripheral side of the pad printing pattern. The pad printing patterns of multiple ink supply platforms 2051 constitute a complete pattern.

[0052] The method includes:

[0053] Step S11 , controlling a pad printing head 202 to print a pad printing pattern and a marking pattern corresponding to the ink supply platform 2051 onto a calibration workpiece in the fixture 401 .

[0054] Step S12: Control the camera 501 to photograph the surface pattern of the calibration workpiece.

[0055] Step S13: comparing and analyzing the positions of the pad printing pattern and / or the marking pattern on the calibration workpiece with the preset pad printing pattern and / or the marking pattern.

[0056] Step S14, obtaining the position deviation of the pad printing pattern, where the position deviation includes an X-axis deviation value, a Y-axis deviation value, and a rotation angle deviation value.

[0057] Step S21 , repeating steps S11 to S14 until the position deviations of all pad printing heads 202 are obtained.

[0058] Among them, after the calibration is completed, the multi-station pad printing device 1000 is controlled to print a complete pattern on the calibration workpiece on the fixture 401, and the movement of the pad printing head 202 in the X-axis direction is adjusted according to the X-axis deviation value to adjust the X-axis deviation, and the movement of the fixture 401 in the Y-axis direction is adjusted according to the Y-axis deviation value to adjust the Y-axis deviation, and the rotation angle of the pad printing head 202 is adjusted according to the rotation angle deviation value to adjust the rotation angle deviation.

[0059] The multi-station shift printing device 1000 is provided with a plurality of pad printing heads 202 and an ink supply platform 2051 corresponding to the pad printing heads 202. The ink supply platform 2051 is provided with a pad printing groove 20511 for storing ink pigment, so that the pad printing head 202 can perform pad printing processing on the calibration workpiece after dipping the pigment. A pad printing pattern and at least one marking pattern are provided in the pad printing groove 20511, and the marking pattern is arranged around the pad printing pattern. In actual use, the multi-station shift printing device 1000 is first used to control the movement of the pad printing head 202 and the pad printing pattern and the marking pattern are simultaneously printed on the outer surface of the pad printing head 202. The pad printing pattern is used to perform calibration processing on the calibration workpiece, and the marking pattern is used to locate and identify the pad printing pattern. Then, the pad printing pattern and / or marking pattern on the calibration workpiece is compared with the preset pad printing pattern and / or marking pattern, and the X-axis deviation, Y-axis deviation and rotation angle deviation are obtained by comparison. Then, the obtained deviation data is used to accurately adjust the movement of the pad printing head 202 in the Y-axis direction, adjust the movement of the fixture 401 in the X-axis direction, and adjust the rotation angle of the fixture 401. Then, the above steps are repeated until the position deviation of all pad printing heads 202 is obtained. The calibration method of the above-mentioned multi-station pad printing device 1000 can identify and compare each pad printing head 202 with the preset pad printing pattern and / or marking pattern by adjusting the movement of the pad printing head 202 in the Y-axis, the movement of the fixture 401 in the X-axis, and the rotation angle of the fixture 401, thereby obtaining the deviation data of each pad printing head 202, and then accurately adjusting the multi-station pad printing device 1000 according to the deviation data, which can improve the precise adjustment capability of the multi-station pad printing device 1000 and reduce the occurrence of misalignment and offset during the pad printing process (refer to Figures 2 to 4 ), improving the accuracy of the multi-station pad printing device 1000 during the pad printing process.

[0060] Further, in an optional embodiment of the present invention, the marking pattern is one of a cross mark, a Pozidriv mark or a star mark.

[0061] Furthermore, in an optional embodiment of the present invention, four marking patterns are provided, which are respectively arranged in four directions perpendicular to each other on the outer circle of the pad printing pattern, and the pad printing pattern is located at the center of the pad printing groove 20511.

[0062] The pad printing pattern is arranged at the center of the pad printing groove 20511, and four marking patterns are arranged in four mutually perpendicular directions of the pad printing pattern to facilitate positioning and calibration of the pad printing pattern through the marking patterns.

[0063] Further, in an optional embodiment of the present invention, the multi-station pad printing device 1000 further includes a control panel 503, a first linear motion module 201 and a second linear motion module 300, the pad printing head 202 is arranged on the first linear motion module 201, the fixture 401 is arranged on the second linear motion module 300, and the movement of the pad printing head 202 in the X-axis direction is adjusted according to the X-axis deviation value to adjust the X-axis deviation, the movement of the fixture 401 in the Y-axis direction is adjusted according to the Y-axis deviation value to adjust the Y-axis deviation, and the rotation angle of the pad printing head 202 is adjusted according to the rotation angle deviation value to adjust the rotation angle deviation. The deviation includes:

[0064] Step S31 : After one of the pad printing heads 202 is adjusted, the current pad printing head 202 returns to the initial position.

[0065] Step S32: Control the next pad printing head 202 to make adjustments through the control panel 503.

[0066] The multi-station pad printing device 1000 is provided with a control panel 503. In actual use, the first linear moving module 201, the second linear moving module 300 and the rotating platform 400 can be adjusted through the control panel 503. After the adjustment of the above modules is completed, the adjustment of the current pad printing head 202 has been completed. At this time, the next pad printing head 202 is adjusted through the control panel 503 until all the pad printing heads 202 are adjusted, thereby ensuring the uniformity and accuracy of the pad printing process.

[0067] The first linear motion module 201 can drive the pad printing head 202 to move in the Y-axis direction, and the second linear motion module 300 can drive the fixture 401 and the calibration workpiece to move in the X-axis direction.

[0068] Further, in an optional embodiment of the present invention, controlling the camera 501 to photograph the surface pattern of the calibration workpiece includes:

[0069] Step S121 , controlling the second linear motion module 300 to move the fixture 401 to below the camera 501 to capture the surface pattern.

[0070] Step S122 , controlling the second linear motion module 300 to move the fixture 401 back to the initial position.

[0071] Step S123 , controlling the second linear motion module 300 to move the fixture 401 to the next pad printing head 202 .

[0072] Step S124 , repeating steps S121 to S124 until the surface patterns printed by all the pad printing heads 202 are photographed.

[0073] In the step of controlling the camera 501 to shoot the surface pattern of the calibration workpiece, it also includes: driving the fixture 401 to move in the X direction through the second linear motion module 300, so that the fixture 401 and the calibration workpiece on the fixture 401 correspond to the pad printing head 202. Afterwards, the pad printing head 202 is driven to pad the pad printing pattern and the marking pattern onto the calibration workpiece. Afterwards, the second linear motion module 300 is controlled to drive the calibration workpiece to move to the camera 501, so that the camera 501 shoots the surface pattern of the calibration workpiece. Afterwards, the second linear motion module 300 drives the calibration workpiece back to the initial position, and after setting a new calibration workpiece on the fixture 401, the second linear motion module 300 drives the fixture 401 to move to the next pad printing head 202 for pad printing. Repeat the above steps until all pad printing heads 202 complete pad printing and identification.

[0074] Further, in an optional embodiment of the present invention, the multi-station pad printing device 1000 includes a first sliding assembly 203, and the first sliding assembly 203 includes a first slider 2032 slidably connected to the first slide rail 2031, and a second slider 2034 slidably connected to the first slider 2032. After comparing and obtaining the deviation between each printed pad printing pattern and the preset pad printing pattern, the method further includes:

[0075] Step S41 : displaying deviation information of each pad printing head 202 on the control panel 503 .

[0076] Step S42 , adjusting the position of the first slider 2032 relative to the first slide rail 2031 and the position of the first slider 2032 relative to the second slider 2034 according to the deviation information.

[0077] The multi-station pad printing device 1000 is also provided with a first sliding assembly 203, which includes a first slide rail 2031 and a first slider 2032 slidably connected to the first slide rail 2031, a second slide rail 2033 is provided on the first slider 2032, and a second slider 2034 is slidably connected to the second slide rail 2033. Therefore, after comparing the deviation between the marking pattern captured by the camera 501 and the preset marking pattern, the relative position between the first slider 2032 and the first slide rail 2031, and the relative position between the second slider 2034 and the second slide rail 2033 can be adjusted. By adjusting the first sliding assembly 203, the adjustment of the pad printing head 202 is more accurate and precise.

[0078] Furthermore, in an optional embodiment of the present invention, when the rotating platform 400 is disposed between the fixture 401 and the linear motion module, the method further includes: adjusting the stop position of the fixture 401 and adjusting the rotation angle of the fixture 401 by the rotating platform 400 .

[0079] According to the deviation information obtained after comparing the marking pattern photographed by the camera 501 with the preset pattern, the rotating platform 400 is controlled to drive the fixture 401 and the calibration workpiece on the fixture 401 to adjust and adjust the rotation angle.

[0080] Further, in an optional embodiment of the present invention, after calibration is completed, controlling the multi-station shift printing device 1000 to print a complete pattern on the calibration workpiece on the fixture 401 includes: the pad printing head 202 moves a first distance toward the ink supply platform 2051, and the surface of the pad printing head 202 is pad printed to the pad printing pattern; wherein, when calibrating the multi-station shift printing device 1000, the pad printing head 202 moves a second distance toward the ink supply platform 2051, and the surface of the pad printing head 202 is pad printed to the pad printing pattern and the marking pattern.

[0081] The step of printing a complete pattern on the calibration workpiece on the fixture 401 includes: the pad printing head 202 moves a first distance toward the ink supply platform 2051 to complete the pad printing process. The multi-station pad printing device 1000 can perform testing and pad printing by controlling the pad printing head 202 to move different distances.

[0082] When performing pad printing, the pad printing head 202 is controlled to move a first distance so that the surface of the pad printing head 202 is only pad-printed to the pad printing pattern, so that the pad printing head 202 only pad-prints the pad printing pattern on the surface of the workpiece.

[0083] When performing the test, the pad printing head 202 is controlled to move a second distance so that the surface of the pad printing head 202 can be transferred to the pad printing pattern and the marking pattern, thereby enabling the pad printing head 202 to simultaneously transfer the pad printing pattern and the marking pattern to the calibration workpiece, facilitating the subsequent camera 501 to locate and identify the marking pattern.

[0084] It should be noted that the calibration workpiece is a workpiece used in the calibration process of the pad printing head 202, so the pad printing pattern and the calibration pattern can be printed on the calibration workpiece. The workpiece to be processed is a workpiece used in the formal pad printing process, so only the pad printing pattern can be printed on the workpiece to be processed.

[0085] The embodiment of the present invention further provides a multi-station displacement printing device 1000, such as Figure 5-7As shown, the multi-station pad printing device 1000 includes: a base 100, a pad printing module 200, a second linear motion module 300, a rotating platform 400, a visual component 500 and a controller. The pad printing module 200 is arranged on the base 100, and the pad printing module 200 includes a first linear motion module 201, and the first linear motion module 201 is connected to a plurality of pad printing heads 202, and the pad printing heads 202 are used to perform pad printing processing on the workpiece to be processed; the second linear motion module 300 is arranged on the base 100, and the second linear motion module 300 is located below the pad printing module 200, and the rotating platform 400 is arranged on the second linear motion module 300, and a fixture 401 is provided on the side of the rotating platform 400 away from the second linear motion module 300, and the fixture 401 is used to place the workpiece to be processed; the visual component 500 includes a camera 501, a memory and a display screen 502, the camera 501 is arranged on the second linear motion module 300 or the base 100, and the fixture 401 can be moved to a position corresponding to the camera 501, the memory is used to store the pad printing pattern, and the display screen 502 is used to display the pad printing pattern information; the pad printing module 200, the rotating platform 400, the second linear motion module 300 and the visual component 500 are respectively electrically connected to the controller; wherein, the first linear motion module 201 can drive multiple pad printing heads 202 to move in the Y-axis direction, the second linear motion module 300 can drive the fixture 401 to move along the X-axis direction, and the rotating platform 400 can drive the fixture 401 to rotate.

[0086] The base 100 provides a stable support for the pad printing module 200, making the pad printing process more stable and efficient. The pad printing module 200 is provided with a first linear moving module 201, which is used to drive the pad printing head 202 to move in the Y-axis direction, so as to facilitate pad printing of the workpiece to be processed. The second linear moving module 300 is provided with a jig 401, on which the workpiece to be processed is placed. The second linear moving module 300 can drive the jig 401 to move in the X-axis direction, so that the workpiece to be processed on the jig 401 is moved to the pad printing module 200, so as to facilitate the pad printing module 200 to perform pad printing. The rotating platform 400 can drive the jig 401 to rotate, so as to facilitate the correspondence between the workpiece to be processed and the pad printing head 202. The camera 501 is mainly used to capture the image information of the workpiece to be processed on the fixture 401, and then compare it with the standard image in the memory. Through the existing comparison model, the parameters of the X-axis displacement, Y-axis displacement and rotation angle that need to be adjusted by the pad printing module 200 are compared and displayed to the operator through the display screen 502. The operator adjusts the pad printing module 200 or adjusts the second linear moving module 300 according to the specific image information and parameters on the display screen 502, so that the pad printing module 200 can perform pad printing processing on the workpiece to be processed more accurately and precisely. Such a setting method enables the multi-station shift printing device 1000 with a calibration function to simply and quickly provide the parameters that need to be adjusted currently by means of image information comparison, so that the error between the current condition of the workpiece to be processed and the required standard is more intuitive and accurate, and the staff can more conveniently and accurately control the adjustment of the pad printing module 200 and the second linear moving module 300, thereby achieving precise positioning and fine-tuning of the pad printing process of the multi-station shift printing device 1000 with a calibration function, ensuring the accuracy of the pad printing process of the multi-station shift printing device 1000 with a calibration function.

[0087] Among them, the camera 501 in the visual component 500 can quickly and accurately capture the image of the workpiece to be processed, and the memory is used to store standard image information and real-time image data captured by the camera 501, and provide support for subsequent processing by comparing these image data.

[0088] It should be noted that in this embodiment, the real-time image information is compared by the camera 501 and the memory, so that the user can adjust and control the multi-station pad printing device 1000 with calibration function. Afterwards, the operator manually controls the pad printing module 200 to adjust and control.

[0089] Specifically, the display screen 502 is used to display image information, and the camera 501 in the visual component 500 is used to capture and read the image information of the workpiece to be processed, and compare it with the standard information in the memory, so as to facilitate the subsequent pad printing of the workpiece to be processed. Therefore, the display screen 502 can help the user observe the image information of the workpiece to be processed more conveniently and intuitively, and thereby control and adjust the multi-station pad printing device 1000 with a calibration function to ensure the smooth progress of the printing process.

[0090] It should be noted that in this embodiment, the memory is a programmable logic controller (PLC). PLC is a digital operation electronic system designed specifically for use in industrial environments. It uses a programmable memory to store instructions for performing operations such as logical operations, sequential control, timing, counting and arithmetic operations, and controls various types of mechanical equipment or production processes through digital or analog input and output.

[0091] Among them, a rotating platform 400 is arranged between the second linear motion module 300 and the fixture 401, and the rotating platform 400 can drive the fixture 401 to rotate, further enhancing the movement ability of the fixture 401 and the workpiece to be processed. In addition to the second linear motion module 300 driving the fixture 401 and the workpiece to be processed set on the fixture 401 to perform linear motion, the rotating platform 400 can also drive the workpiece to be processed to perform rotational motion, so as to facilitate the processing and observation of the workpiece to be processed. The rotating platform 400 provides an additional rotation function, so that the workpiece to be processed can be rotated during the processing process, which improves the flexibility and diversity of the multi-station displacement printing device 1000 with calibration function when processing workpieces.

[0092] It is easy to understand that the workpiece to be processed is placed on the rotating platform 400, so that the workpiece to be processed can be processed at different angles by rotating on the rotating platform 400, which is conducive to meeting multi-angle processing requirements and improving processing accuracy and efficiency.

[0093] refer to Figures 6 to 8 The pad printing module 200 also includes a frame and a plurality of first sliding components 203. The first linear moving module 201 is arranged in the frame. The first linear moving module 201 includes a rotating driving member 2011, a screw rod 2012 and a moving platform 2013. The screw rod 2012 is transmission-connected to the rotating driving member 2011. The screw rod 2012 and the moving platform 2013 are threadedly connected. Lifting modules 204 are respectively arranged on opposite sides of the moving platform 2013. The bottoms of the two lifting modules 204 are connected with a first slide rail 2031. The first sliding component 203 is arranged on a side of the first slide rail 2031 away from the lifting module 204. Each first sliding component 203 is connected to a pad printing head 202 so that the pad printing head 202 can slide along the extension direction of the first slide rail 2031, or slide along the extension direction perpendicular to the first slide rail 2031.

[0094] The frame provides certain protection and sealing for the electronic components and mechanical structures in the pad printing module 200 to prevent the external environment from affecting and interfering with the electronic components. The first linear moving module 201 is arranged in the frame, the screw rod 2012 is connected to the rotating driving member 2011 by transmission, and the screw rod 2012 is threadedly connected to the moving platform 2013, so that when the rotating driving member 2011 drives the screw rod 2012 to rotate, because the screw rod 2012 remains fixed relative to the frame, the moving platform 2013 can move due to the rotation of the screw rod 2012, thereby realizing the movement of the moving platform 2013 and the pad printing head 202 in the Y-axis direction relative to the frame.

[0095] On the other hand, lifting modules 204 are respectively provided on opposite sides of the moving platform 2013, and the bottoms of the two lifting modules 204 are connected to the first slide rails 2031, and the pad printing head 202 is connected to the first slide rails 2031, so as to drive the pad printing head 202 to move in the vertical direction through the driving of the lifting modules 204. Through the above-mentioned structural setting, the pad printing head 202 has the ability to move in the vertical direction and the Y-axis direction, and the moving range of the pad printing head 202 is increased, so as to facilitate the movement of the pad printing head 202 and facilitate the subsequent pad printing processing of the workpiece to be processed.

[0096] The moving platform 2013 can move accurately in a straight line through the first straight line moving module 201, so as to realize accurate movement and control of the pad printing head 202 in the Y-axis direction. The lifting module 204 can accurately control and move the first slide rail 2031 in the vertical direction, so as to ensure the accuracy of the printing position.

[0097] Specifically, the design of the two lifting modules 204 enables the first slide rail 2031 to remain stable and smooth when moving in the vertical direction, thereby improving the stability of the multi-station displacement printing device 1000 with calibration function.

[0098] Specifically, the pad printing head 202 is slidably connected to the first slide rail 2031 through the first sliding assembly 203, so that the pad printing head 202 can move smoothly along the extension direction of the first slide rail 2031 or along the extension direction perpendicular to the first slide rail 2031 in the pad printing module 200, making the pad printing process more convenient and stable.

[0099] refer to Figures 7 to 9 The first sliding assembly 203 includes a first slider 2032 and a second slider 2034. The first slider 2032 is slidably connected to the first slide rail 2031. A second slide rail 2033 is provided on the side of the first slider 2032 away from the first slide rail 2031. The second slider 2034 is slidably connected to the second slide rail 2033. The setting direction of the first slide rail 2031 is perpendicular to the setting direction of the second slide rail 2033. The end of the second slider 2034 is connected to the pad printing head 202.

[0100] The first sliding assembly 203 can increase the flexibility between the pad printing head 202 and the first slide rail 2031, so that the pad printing head 202 can move relative to the first slide rail 2031 through the first sliding assembly 203, making the pad printing head 202 more flexible and applicable. Among them, in the first sliding assembly 203, the setting directions of the first slide rail 2031 and the second slide rail 2033 are perpendicular, so the movement directions of the first slider 2032 and the second slider 2034 are perpendicular to each other, so that the pad printing head 202 can have a larger range of motion, so that the multi-station pad printing device 1000 with calibration function can complete the pad printing processing of the workpiece to be processed more conveniently and quickly. At the same time, the multi-stage sliding connection method such as the first sliding assembly 203 can provide more stable support and smooth movement, which helps to maintain the accuracy of the multi-station pad printing device 1000 with calibration function for fine-tuning the printing position.

[0101] The first slide rail 2031 and the second slide rail 2033 are arranged in a perpendicular direction, and the pad printing head 202 can move in two perpendicular directions, so that the pad printing head 202 can move in a larger range, and the pad printing head 202 can move more flexibly to the pad printing groove 20511 to dip ink and pigment, and move to the workpiece to be processed for pad printing. The pad printing head 202 is arranged on the first sliding component 203, which can realize the precise movement of the pad printing head 202 and ensure the accuracy and stability of the fine adjustment of the printing position.

[0102] refer to Figure 1 and Figure 7 The pad printing module 200 also includes a plurality of ink components 205, and the ink components 205 are arranged one by one corresponding to the pad printing heads 202. The ink components 205 include an ink supply platform 2051, an ink cartridge 2052 and a pushing mechanism 2053. The ink supply platform 2051 is located on a frame, and the ink cartridge 2052 is arranged on the ink supply platform 2051 and is slidably connected to the ink supply platform 2051. A pad printing groove 20511 is provided on the side of the ink supply platform 2051 away from the ink cartridge 2052. The pushing mechanism 2053 is arranged on the frame, and the pushing mechanism 2053 can push the ink cartridge 2052 to move to the pad printing groove 20511.

[0103] The ink cartridge 2052 can make the ink inside flow to the pad printing groove 20511 to ensure that the ink in the pad printing groove 20511 is sufficient and maintain the stability and uniformity of the ink supply. The pushing mechanism 2053 is arranged corresponding to the ink cartridge 2052, and the pushing mechanism 2053 can push the ink cartridge 2052 to move to the pad printing groove 20511, so that the movement control of the ink cartridge 2052 and the supply and control of the ink into the pad printing groove 20511 are more accurate and convenient, thereby improving the working efficiency of the ink assembly 205.

[0104] In actual use, the pad printing head 202 is driven horizontally by the rotating driving member 2011 and the screw rod 2012, and the lifting module 204 is driven vertically, so that the pad printing head 202 can move in a larger range, so that the pad printing head 202 can easily dip ink from the pad printing groove 20511 to complete the pad printing process of the workpiece to be processed. The pad printing head 202 can move in the horizontal direction and the vertical direction, so that the pad printing head 202 can complete the processing of dipping ink and pad printing the workpiece to be processed. The pad printing head 202 has a relatively flexible activity, so that the multi-station pad printing device 1000 with a calibration function can adapt to workpieces of different sizes and dimensions to be processed, and improve the accuracy and flexibility of pad printing.

[0105] Specifically, the ink cartridge 2052 is slidably connected to the ink supply platform 2051, and can slide to the pad printing groove 20511 through the push of the pushing mechanism 2053, and supply ink into the pad printing groove 20511 to facilitate subsequent pad printing processing. This design allows the ink cartridge 2052 to be firmly slidably connected to the ink supply platform 2051, and facilitates the connection between the ink cartridge 2052 and the pad printing groove 20511, which helps to ensure a stable supply of ink.

[0106] It should be noted that, in this embodiment, an ink leakage hole is provided on the side of the ink cartridge 2052 facing the ink supply platform 2051. The ink leakage hole helps to control the flow of ink into the pad printing groove 20511 to ensure that the ink in the pad printing groove 20511 is sufficient, which is convenient for subsequent pad printing processing.

[0107] refer to Figure 1 and Fig.10 The ink assembly 205 also includes a second sliding assembly 2054, and the ink supply platform 2051 is slidably connected to the frame through the second sliding assembly 2054. The second sliding assembly 2054 includes a third slide rail 20541, and a plurality of third sliders 20542 are slidably connected to the third slide rail 20541. A fourth slide rail 20543 and a fourth slider 20544 slidably connected to the fourth slide rail 20543 are provided on the side of the third slider 20542 away from the third slide rail 20541. The setting direction of the third slide rail 20541 is perpendicular to the setting direction of the fourth slide rail 20543, and the ink supply platform 2051 is set on the fourth slider 20544.

[0108] The ink supply platform 2051 is slidably connected to the frame through the second sliding assembly 2054, so as to realize the multi-directional movement of the ink supply platform 2051 relative to the frame, so as to expand the flexibility and applicability of the multi-station displacement printing device 1000 with calibration function in use. A third slide rail 20541 is arranged on the second mounting plate of the second sliding assembly 2054, and a plurality of third sliders 20542 are slidably connected to the third slide rail 20541. The third slider 20542 is further provided with a fourth slide rail 20543, and a fourth slider 20544 is slidably connected to the fourth slide rail 20543. The ink supply platform 2051 is connected to the side of the fourth slider 20544 away from the fourth slide rail 20543. The setting direction of the third slide rail 20541 is perpendicular to the setting direction of the fourth slide rail 20543, so the ink supply platform 2051 can be moved in two directions, thereby expanding the mobility of the ink supply platform 2051 and further enhancing the mobility and applicability of the multi-station displacement printing device 1000 with calibration function.

[0109] Specifically, the multi-stage sliding connection of the second sliding component 2054 can enhance the mobility of the ink supply platform 2051 , reduce friction, and improve the smoothness and accuracy of the sliding of the second sliding component 2054 , thereby helping to ensure the accurate movement of the ink supply platform 2051 .

[0110] Among them, the setting direction of the third slide rail 20541 is perpendicular to the setting direction of the fourth slide rail 20543, so that the movement directions of the third slider 20542 and the fourth slider 20544 are perpendicular to each other, that is, the ink supply platform 2051 can be moved in two mutually perpendicular horizontal directions, so that the ink supply platform 2051 has better mobility and a larger moving range.

[0111] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some of the technical features therein can be replaced by equivalents; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A calibration method for a multi-station displacement printing device, characterized in that: The multi-station pad printing device comprises a plurality of pad printing heads and a plurality of corresponding ink supply platforms, wherein the ink supply platforms are provided with pad printing grooves, wherein pad printing patterns and at least one marking pattern are provided in the pad printing grooves, and wherein the marking pattern is arranged on the periphery of the pad printing pattern, and the pad printing patterns of the plurality of ink supply platforms constitute a complete pattern; the method comprises: Step S11, controlling a pad printing head to print a pad printing pattern and a marking pattern corresponding to the ink supply platform onto a calibration workpiece in a fixture; Step S12, controlling the camera to photograph the surface pattern of the calibration workpiece; Step S13, comparing and analyzing the positions of the pad printing pattern or / and the marking pattern on the calibration workpiece with the preset pad printing pattern or / and the marking pattern; Step S14, obtaining the position deviation of the pad printing pattern, wherein the position deviation includes an X-axis deviation value, a Y-axis deviation value and a rotation angle deviation value; Step S21, repeating steps S11 to S14 until the position deviations of all the pad printing heads are obtained; Among them, after the calibration is completed, the multi-station pad printing device is controlled to print a complete pattern on the calibration workpiece on the fixture, the movement of the pad printing head in the X-axis direction is adjusted according to the X-axis deviation value to adjust the X-axis deviation, the movement of the fixture in the Y-axis direction is adjusted according to the Y-axis deviation value to adjust the Y-axis deviation, and the rotation angle of the pad printing head is adjusted according to the rotation angle deviation value to adjust the rotation angle deviation.

2. The calibration method of the multi-station displacement printing device according to claim 1, characterized in that: The marking pattern is one of a cross mark, a rice mark or a star mark.

3. The calibration method of the multi-station displacement printing device according to claim 1 or 2, characterized in that: There are four marking patterns, which are respectively arranged in four directions perpendicular to each other on the outer circle of the pad printing pattern, and the pad printing pattern is located at the center of the pad printing groove.

4. The calibration method of the multi-station displacement printing device according to claim 2, characterized in that: The multi-station pad printing device further includes a control panel, a first linear moving module and a second linear moving module, the plurality of pad printing heads are arranged on the first linear moving module, the fixture is arranged on the second linear moving module, the X-axis direction movement of the pad printing head is adjusted according to the X-axis deviation value to adjust the X-axis deviation, the Y-axis direction movement of the fixture is adjusted according to the Y-axis deviation value to adjust the Y-axis deviation, and the rotation angle of the pad printing head is adjusted according to the rotation angle deviation value to adjust the rotation angle deviation, including: After one of the pad printing heads is adjusted, the current pad printing head returns to the initial position; The pad printing head is controlled by the control panel to be adjusted.

5. The calibration method of the multi-station displacement printing device according to claim 4, characterized in that: The controlling the camera to photograph the surface pattern of the calibration workpiece comprises: Step S121, controlling the second linear motion module to move the fixture to below the camera to capture the surface pattern; Step S122, controlling the second linear motion module to move the fixture back to the initial position; Step S123, controlling the second linear motion module to move the fixture to the next pad printing head; Step S124, repeating steps S121 to S124 until all the surface patterns printed by the pad printing heads are photographed.

6. The calibration method of the multi-station displacement printing device according to claim 4, characterized in that: The multi-station pad printing device includes a first sliding assembly, and the first sliding assembly includes a first slider slidably connected to a first slide rail, and a second slider slidably connected to the first slider. After the comparison obtains the deviation between each printed pad printing pattern and a preset pad printing pattern, the method further includes: Displaying deviation information of each pad printing head on a control panel; The position of the first slider relative to the first slider rail and the position of the first slider relative to the second slider are adjusted according to the deviation information.

7. The calibration method of the multi-station displacement printing device according to claim 1, characterized in that: When the rotating platform is disposed between the fixture and the linear motion module, the method further comprises: The stop position of the jig is adjusted, and the rotation angle of the jig is adjusted by the rotating platform.

8. The calibration method of the multi-station displacement printing device according to claim 1, characterized in that: After the calibration is completed, controlling the multi-station displacement printing device to print a complete pattern on the calibration workpiece on the fixture includes: The pad printing head moves a first distance toward the ink supply platform, and the pad printing pattern is printed on the surface of the pad printing head; Wherein, when calibrating the multi-station pad printing device, the pad printing head moves a second distance toward the ink supply platform, and the pad printing pattern and the marking pattern are pad printed on the surface of the pad printing head.

9. A multi-station displacement printing device, characterized in that: include: Base; A pad printing module, the pad printing module is arranged on the base, the pad printing module comprises a first linear moving module, the first linear moving module is connected to a plurality of pad printing heads, and the pad printing heads are used to perform pad printing processing on the workpiece; a second linear motion module, the second linear motion module is arranged on the base, and the second linear motion module is located below the pad printing module, A rotating platform, the rotating platform is arranged on the second linear motion module, a fixture is arranged on the side of the rotating platform away from the second linear motion module, and the fixture is used to place the workpiece to be processed; A visual component, the visual component comprising a camera, a memory and a display screen, the camera being arranged on the second linear motion module or the base, and the fixture being movable to a position corresponding to the camera, the memory being used to store a pad printing pattern, and the display screen being used to display pad printing pattern information; A controller, the pad printing module, the rotating platform, the second linear motion module and the visual component are electrically connected to the controller respectively; The first linear motion module can drive the plurality of pad printing heads to move in the Y-axis direction, the second linear motion module can drive the fixture to move along the X-axis direction, and the rotating platform can drive the fixture to rotate.

10. The multi-station displacement printing device according to claim 9, characterized in that: The pad printing module also includes a frame and multiple first sliding components, the first linear moving module is arranged in the frame, the first linear moving module includes a rotating drive member, a screw rod and a moving platform, the screw rod is drivingly connected to the rotating drive member, the screw rod and the moving platform are threadedly connected, and lifting modules are respectively arranged on opposite sides of the moving platform, the bottoms of the two lifting modules are connected to the first slide rail, the first sliding component is arranged on the side of the first slide rail away from the lifting module, and the pad printing head is connected to each of the first sliding components so that the pad printing head can slide along the extension direction of the first slide rail, or slide along the extension direction perpendicular to the first slide rail.

11. The multi-station displacement printing device according to claim 9, characterized in that: The first sliding assembly includes a first slider and a second slider, the first slider is slidably connected to the first slide rail, a second slide rail is provided on the side of the first slider away from the first slide rail, the second slider is slidably connected to the second slide rail, the setting direction of the first slide rail is perpendicular to the setting direction of the second slide rail, and the end of the second slider is connected to the pad printing head.

12. The multi-station displacement printing device according to claim 10, characterized in that: The pad printing module also includes multiple ink components, and the ink components are arranged in a one-to-one correspondence with the pad printing head. The ink components include an ink supply platform, an ink cartridge and a pushing mechanism. The ink supply platform is located on the frame, and the ink cartridge is arranged on the ink supply platform and is slidably connected to the ink supply platform. A pad printing groove is provided on the side of the ink supply platform away from the ink cartridge. The pushing mechanism is arranged on the frame, and the pushing mechanism can push the ink cartridge to move to the pad printing groove.

13. The multi-station displacement printing device according to claim 12, characterized in that: The ink assembly also includes a second sliding assembly, and the ink supply platform is slidably connected to the frame through the second sliding assembly, the second sliding assembly includes a third slide rail, and a plurality of third sliders are slidably connected to the third slide rail. A fourth slide rail and a fourth slider slidably connected to the fourth slide rail are provided on the side of the third slider away from the third slide rail, and the setting direction of the third slide rail is perpendicular to the setting direction of the fourth slide rail, and the ink supply platform is arranged on the fourth slider.

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