Automatic vacuum ink container and its ink supply device and vacuum piston device

Abstract

An automatic vacuum ink container and its ink supply valve device and vacuum piston device. The ink container comprises a container cylinder, an ink supply valve mounted at one end of the container cylinder for opening and closing the passage of the ink, and a vacuum piston, mounted at the other end of the container cylinder and provided with more than one exhaust hole, for exhausting air when packaging ink and for pushing ink toward the ink supply valve when supplying ink. The ink supply valve comprises a valve lid and a valve sleeve; the valve lid can be pushed by ink to move forward to form a space for dispensing ink; two sloping sealing faces are provided respectively around the top of the valve sleeve and on the inner wall of the top of the valve lid. The exhaust pores are set through the vacuum piston longitudinally.

What is claimed is: 
     
       1. An automatic vacuum ink container, comprising:
 a container cylinder; 
 an ink supply valve mounted at one end of the container cylinder for automatically opening and closing passage of the ink; and 
 a vacuum piston, mounted at the other end of the container cylinder and provided with more than at least one exhaust hole pore, for exhausting air when packaging ink and for pushing ink toward the ink supply valve when supplying ink; 
 wherein the ink supply valve comprises a valve lid connected directly with the container cylinder, as well as a valve sleeve embedded into the valve lid; 
 the valve lid can be pushed by ink to move forward so as to form a space for dispensing ink; 
 two sloping sealing faces are set respectively around the top of the valve sleeve and on the inner wall of the top of the valve lid, which can cooperate with each other to seal the container and cut off ink; 
 the more than at least one exhaust pore is set through the vacuum piston longitudinally. 
 
     
     
       2. The automatic vacuum ink container set forth in  claim 1 , wherein the valve lid comprises an end face connected with the container cylinder, a mouthpiece neck connected with the end face, an annular top with an ink supply opening set at the center, and an elastic coupling connecting the annular top and the mouthpiece neck. 
     
     
       3. The automatic vacuum ink container set forth in  claim 2 , wherein the sloping sealing face is set around the inner side of the ink supply opening;
 the elastic coupling extends down axially from the rim of the annular top, with its lower end connected with the upper end of the mouthpiece neck; 
 the elastic coupling and the annular top can stretch forward axially; 
 on the upper end of the inner wall of the mouthpiece neck is set a raised location ring for locating the valve sleeve; 
 a circular sealing wall extends downwardly and axially at the space between the inner wall of the ink supply opening of the annular top and the elastic coupling; 
 on the outer wall of the mouthpiece neck are set multiple raised thread latches; under the latches are set corresponding thread latch grooves; 
 a circular concave sealing groove is provided at the lower part of the inner hole of the valve lid; 
 an annular embedding groove is set downwardly and axially around the rim of the end face of the valve lid to match the container cylinder. 
 
     
     
       4. The automatic vacuum ink container set forth in  claim 3 , wherein the elastic coupling is a WI-shaped spring. 
     
     
       5. The automatic vacuum ink container set forth in  claim 1 , wherein the valve sleeve comprises a stepped sleeve cylinder, a flat top, and ribs connecting the flat top and the sleeve cylinder; multiple cavities are formed in between the ribs. 
     
     
       6. The automatic vacuum ink container set forth in  claim 5 , wherein around the rim of the flat top is provided a sloping sealing face, which structurally cooperates with the sloping sealing face of the valve lid;
 the ribs specifically connect the upper end of the sleeve cylinder and the lower end of the sloping sealing face of the flat top; 
 at the upper end face of the sleeve cylinder is set a sealing slot for allowing the circular sealing wall of the valve lid to be inserted into it; 
 the upper end of the inner wall of the sealing slot is formed to incline toward the center of the slot; 
 there are raised latches provided at the middle part of the outer wall of the sleeve cylinder to structurally match the raised location ring of the valve lid; 
 the raised latches press up the sloping sealing face around the rim of the flat top and make it tightly cooperate with the corresponding sloping sealing face of the valve lid; 
 a sealing skirt is set at the lower end of the stepped sleeve cylinder to structurally match the concave sealing groove of the valve lid; 
 the raised latches also bring the lower part of the stepped sleeve cylinder up and make the sealing skirt cling to the concave sealing groove of the valve lid tightly. 
 
     
     
       7. The automatic vacuum ink container set forth in  claim 1 , wherein the vacuum piston comprises a cylindrical piston body; a conic bulge set at the central area of the frontal end face of the cylindrical body; and a piston lid mounted at the rear end face of the cylindrical piston body to cover the exhaust pores pore;
 the more than at least one exhaust pore is set on the frontal end face of the cylindrical body around the conic bulge and all the way go to the real rear end face. 
 
     
     
       8. The automatic vacuum ink container set forth in  claim 7 , wherein the conic bulge can match the valve sleeve of the ink supply valve structurally;
 Thethe inlet of the more thanat least one exhaust porespore is set on the frontal end face around the conic bulge and the exhaust pores arepore is all the way go to the rear end face; 
 an annular groove is formed on the rear end face in such a manner that the inner and outer wall of the annular groove project out from the rear end face 
 a piston lid is provided to cover and cooperate with the annular groove. 
 multiple exhaust tubes are set in the annular groove; the said exhaust pores pore just extend extends into the exhaust tubes from the frontal end face of the piston and the outlet of the exhaust pores pore is set on the exhaust tubes; the exhaust tubes are set with the same direction as the exhaust pores pore. 
 
     
     
       9. The automatic vacuum ink container set forth in  claim 8 , wherein the exhaust pores are pore is axially set on the frontal end face. 
     
     
       10. The automatic vacuum ink container set forth in  claim 1 , wherein the vacuum piston comprises a cylindrical piston body; a conic bulge set at the central area of the frontal end face of the cylindrical body; and a piston lid mounted at the rear end face of the cylindrical piston body to cover the exhaust pores pore;
 the more than at least one exhaust pore is set at the lower part of the conic bulge and all the way go through to the real end face of the cylindrical body. 
 
     
     
       11. The automatic vacuum ink container set forth in  claim 8 , wherein the piston lid is for covering and cooperating with the annular groove;
 there are fixing columns set in the piston lid; 
 there are fixing slots set on the rear end face of the vacuum piston to match the fixing column set, so as to fix the piston lid; 
 there are set corresponding sealing holes on the frontal end face of the piston lid to match the exhaust tubes; 
 the piston lid also has an inner and an outer ring to match the inner and outer wall of the annular groove, respectively. 
 
     
     
       12. The automatic vacuum ink container set forth in  claim 7 , wherein on the outer side wall of the vacuum piston is provided an ink-scraping ring, which can interference fit with the inner wall of the container cylinder. 
     
     
       13. The automatic vacuum ink container set forth in  claim 1 , further comprising a balance cover connected with the ink supply valve for placing steadily and further sealing the ink container; the balance cover comprising:
 a bottom plate, a cover cylinder and a central lid; 
 there are latches set on the inner wall of the central lid; 
 the central lid is also provided with an inner sealing top; 
 on the outer wall of the cover cylinder are set an anti-slip grooves; 
 between the cylinder and the bottom plate are set reinforced plates. 
 
     
     
       14. The automatic vacuum ink container set forth in  claim 1 , wherein the container cylinder is made of paper. 
     
     
       15. The automatic vacuum ink container set forth in claim 1, wherein the exhaust pore is multiple and set through the vacuum piston longitudinally.