Pad printing device and ink cleaning method for pad printing device

Abstract

The present disclosure provides an ink cleaning method for a pad printing device, which is applied to the technical field of pad printing mechanical equipment. The pad printing device includes: a pad printing platform, the pad printing platform is provided with an ink tank; an ink cleaning device includes: an ink cleaning unit; a visual detection unit detects the ink remaining in the ink tank and generates the ink tank cleanliness; a first driving unit is used to install the ink cleaning unit vertically above the pad printing platform and drive the ink cleaning unit to move along a first horizontal direction to clean the ink tank; the ink cleaning device is configured to: when the ink tank cleanliness detected by the visual detection unit is greater than a first set value, generate the number of cleaning times for the ink tank by the ink cleaning unit according to the ink tank cleanliness; control the first driving unit to drive the ink cleaning unit to move back and forth in the first direction to perform the cleaning times to clean the ink tank until the ink tank cleanliness detected by the visual detection unit is less than a second set value, and the first set value is greater than or equal to the second set value.

Claims

1. A pad printing device, characterized in that: include: A pad printing platform, wherein an ink tank for containing ink is provided on the pad printing platform; Ink cleaning device, comprising: An ink cleaning unit, used for cleaning the ink tank; a visual inspection unit, disposed vertically above the pad printing platform, for inspecting the ink remaining in the ink tank to generate a cleanliness index of the ink tank; a first driving unit, configured to install the ink cleaning unit vertically above the pad printing platform and drive the ink cleaning unit to move along a first horizontal direction to clean the ink tank; A second driving unit is provided between the ink cleaning unit and the first driving unit, connecting the ink cleaning unit and the first driving unit. The second driving unit is used to drive the ink cleaning unit to move along the second direction; The second direction intersects the first direction; The ink cleaning device is configured as follows: When the cleanliness of the ink tank detected by the visual detection unit is greater than a first set value, the number of cleaning times of the ink tank by the ink cleaning unit is generated according to the cleanliness of the ink tank; the first driving unit is controlled to drive the ink cleaning unit to move back and forth in the first direction to perform the cleaning times to clean the ink tank, until the cleanliness of the ink tank detected by the visual detection unit is less than a second set value, and the first set value is greater than or equal to the second set value.

2. The pad printing device according to claim 1, characterized in that The ink cleaning unit includes: The mounting frame includes a first end and a second end disposed opposite to each other along a second horizontal direction, the first end being slidably connected to the pad printing platform, and the second end being connected to the first driving unit; a pressing portion, disposed between the first end and the second end of the mounting frame and capable of moving vertically toward the ink tank of the pad printing platform; The cleaning sub-unit includes a cleaning cloth arranged on the side of the pressing part close to the pad printing platform and extending from the first end to the second end. When the cleaning cloth is pressed to the pad printing platform by the pressing part, the cleaning cloth is driven by the first driving part to move along the first direction to clean the ink tank.

3. The pad printing device according to claim 2, characterized in that The pressing portion includes: A rubber pressing head, used for pressing the cleaning cloth onto the pad printing platform; The telescopic portion telescopically connects the rubber pressure head to the mounting frame and is used to control the pressure applied by the rubber pressure head to the pad printing platform.

4. The pad printing device according to claim 3, characterized in that The pad printing platform includes a ferromagnetic material, and the rubber pressing head is provided with a plurality of magnetic attraction parts. The plurality of magnetic attraction parts generate an attractive force on the ferromagnetic material so as to press the cleaning cloth onto the pad printing platform through the rubber pressing head.

5. The pad printing device according to claim 2, characterized in that The cleaning subsection includes: A cleaning cloth feeding reel guides and feeds the cleaning cloth to between the pressing portion and the pad printing platform via a first guide shaft close to the first end of the mounting frame; The cleaning portion recycles the reel, and guides the cleaning cloth between the pressing portion and the pad printing platform for recovery via a second guide shaft close to the second end of the mounting frame.

6. The pad printing device according to claim 5, characterized in that: The cleaning subsection also includes: The cleaning liquid supply portion is used to supply cleaning liquid to the cleaning cloth on the cleaning cloth feeding reel and / or the cleaning cloth between the pressing portion and the pad printing platform.

7. The pad printing device according to claim 6, characterized in that: The ink cleaning unit further comprises: a cleaning liquid removal sub-section disposed on the mounting frame and closer to the downstream side of the cleaning direction than the cleaning sub-section, for removing the cleaning liquid remaining on the pad printing platform; The cleaning liquid removal sub-section includes a heating sub-section and an air-jet sub-section.

8. The pad printing device according to claim 2, characterized in that: A slide rail extending along a first direction is provided on one side of the pad printing platform close to the first end of the mounting frame; The first end of the mounting frame is provided with a slide groove extending along a first direction, and the slide groove is slidably connected with the slide rail.

9. The pad printing device according to claim 2, characterized in that: The ink cleaning section further includes a distance measuring component for measuring a moving distance of the cleaning cloth in the cleaning subsection in the second direction.

10. The pad printing device according to claim 1, wherein: The ink cleaning device is configured as follows: In the process of controlling the first driving unit to drive the ink cleaning unit to move back and forth in the first direction to perform the cleaning times to clean the ink tank, The visual detection unit detects the length of the ink tank in the first direction and the second direction. When the sum of the lengths of the ink slots in the second direction is greater than the sum of the lengths of the ink slots in the first direction, the second driving unit is controlled to drive the ink cleaning unit to move back and forth a set distance in the second direction.

11. The pad printing device according to claim 1, characterized in that: The pad printing device further includes: an inking unit provided on the first driving unit for supplying ink to the ink tank of the pad printing platform; The inking part includes: an ink cup attached to the pad printing platform and adding ink to the ink tank when moving past the ink tank of the pad printing platform; A circulation pump is connected to the cavity of the ink cup to keep the ink in the ink cup in a circulating flow state; The pressure-applying part is fixed to the first driving part through a bracket, and applies pressure to the ink cup to adhere to the pad printing platform.

12. The pad printing device according to claim 1, wherein: The visual detection unit includes: a CCD visual detection unit, a CMOS visual detection unit or a TOF visual detection unit.

13. A method for cleaning ink of a pad printing device, characterized in that: include: detecting ink remaining in an ink tank provided on a pad printing platform included in the pad printing device through a visual inspection unit to generate ink tank cleanliness; When the cleanliness of the ink tank detected by the visual detection unit is greater than a first set value, generating a cleaning frequency of the ink tank by the ink cleaning unit according to the cleanliness of the ink tank; controlling the first driving unit to drive the ink cleaning unit to move back and forth in a first direction to perform the cleaning times to clean the ink tank, controlling the second driving unit to drive the ink cleaning unit to move back and forth in a second direction until the cleanliness of the ink tank detected by the visual detection unit is less than a second set value, and the first set value is greater than or equal to the second set value, and the first driving unit installs the ink cleaning unit vertically above the pad printing platform; The second direction intersects the first direction.

14. The ink cleaning method according to claim 13, characterized in that: Also includes: In the process of controlling the first driving unit to drive the ink cleaning unit to move back and forth in the first direction to perform the cleaning times to clean the ink tank, The visual detection unit detects the length of the ink tank in the first direction and the second direction. When the sum of the lengths of the ink slots in the second direction is greater than the sum of the lengths of the ink slots in the first direction, the second driving unit is controlled to drive the ink cleaning unit to move back and forth a set distance in the second direction. The second driving unit is connected to the ink cleaning unit and the first driving unit, and is used to drive the ink cleaning unit to move along the second direction.

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