Control valve and ink dispensing machine

Abstract

The present invention discloses a control valve and an ink dispensing machine. The control valve includes: a first valve core, which is movably arranged; a second valve core, which is movably arranged, and the second valve core is provided with a first channel for outputting ink; an output pipe, which is provided with a second channel for outputting ink, and the first channel and the second channel are communicatively arranged; the first valve core can block the first channel; the first valve core can be removed from the first channel, and when the first valve core is removed from the first channel, the first channel can be unblocked; the second valve core can block the second channel; the second valve core can be removed from the second channel, and when the second valve core is removed from the second channel, the second channel can be unblocked. The present invention provides two types of channels, which can achieve the control of various ink flow rates. The mechanical structure of the present invention is concise.

Description

Technical Field

[0001] The present invention relates to a control valve and an ink dispensing machine. Background Art

[0002] In an ink dispensing machine, the printing amount of ink is one of the important factors for controlling the spraying effect. If the required printing amount of the same kind of ink varies, multiple switching valves are needed for control. This will inevitably increase the complexity of the mechanical structure. The present invention aims to solve the problem of how to simplify the mechanical structure while realizing the controllability of the printing amount of one kind of ink. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a control valve and an ink dispensing machine.

[0004] To achieve the above object, the present invention is realized through the following technical solutions:

[0005] A control valve includes:

[0006] A first valve core, which is movably arranged;

[0007] A second valve core, which is movably arranged, and a first channel is opened in the second valve core for outputting ink;

[0008] An output pipe, which is provided with a second channel for outputting ink, and the first channel and the second channel are communicatively arranged;

[0009] The first valve core is arranged to block the first channel;

[0010] The first valve core is arranged to be removable from the first channel. When the first valve core is removed from the first channel, the first channel can be unblocked;

[0011] The second valve core is arranged to block the second channel;

[0012] The second valve core is arranged to be removable from the second channel. When the second valve core is removed from the second channel, the second channel can be unblocked.

[0013] According to an embodiment of the present invention, it further includes a driving device, which drives the first valve core to move, or drives the first valve core to move through a transmission mechanism.

[0014] According to an embodiment of the present invention, the transmission mechanism includes a connecting rod, which is axially movably arranged, and both ends of the connecting rod are respectively connected to the first valve core and the driving device.

[0015] According to an embodiment of the present invention, the second valve core can be arranged to be linked with the first valve core during the movement of the first valve core.

[0016] According to an embodiment of the present invention, the second valve core is provided with a first moving channel, a part of the first moving channel is arranged to cross the first channel, one end of the first moving channel away from the first channel is arranged in a closed manner, the first valve core is arranged in the first moving channel, and the first valve core is arranged to be movable along the first moving channel.

[0017] According to an embodiment of the present invention, it further includes a first elastic reset device. When the first valve core is removed from the first channel, the first elastic reset device can generate a deformation force, and this deformation force makes the first valve core tend to block the first channel.

[0018] According to an embodiment of the present invention, it further includes a first cover. The first cover is used to close one end of the first moving channel away from the first channel. The connecting rod is arranged to pass through the first cover, and one end of the connecting rod connected to the first valve core is located in the first moving channel, and this end of the connecting rod is arranged to be able to abut against the first cover.

[0019] According to an embodiment of the present invention, the first elastic reset device includes a first compression spring. One end of the first compression spring abuts against the inner surface of the first cover, and the other end abuts against the end of the connecting rod located in the first moving channel.

[0020] According to an embodiment of the present invention, the first moving channel includes a first section and a second section that are connected and communicate with each other. The diameter of the first section is smaller than that of the second section. The size of the first section fits the size of the first valve core. One end of the connecting rod connected to the first valve core is located in the second section. The diameter of the second section fits the outer diameter of the end of the connecting rod located in the second section. This end of the connecting rod is arranged in a sealed manner. The first section is arranged to cross the first channel, and a first cover is arranged at one end of the second section away from the first section.

[0021] According to an embodiment of the present invention, it further includes a first housing. The first housing is provided with a second moving channel, and the second valve core and the first cover are arranged to be movable along the second moving channel.

[0022] According to an embodiment of the present invention, it further includes a second housing. A first cavity is arranged in the second housing. The first cavity is used to accommodate ink. The output pipe is arranged at the outlet of the first cavity. Both ends of the first channel are respectively connected and communicated with the second channel, or both ends of the first channel are respectively communicated with the second channel and the first cavity, and the inner diameter of the first channel is smaller than that of the second channel.

[0023] According to an embodiment of the present invention, the side of the output pipe is provided with an opening. One end of the second moving channel is provided with a second cover, and the other end is arranged at the opening of the output pipe. The size of the opening fits the outer diameter of the second valve core and is smaller than the outer diameter of the first cover. A first groove is arranged on the inner wall of the output pipe relative to the opening, and one end of the second valve core relative to the first cover fits with the first groove.

[0024] According to one embodiment of the present invention, a second elastic reset device is further included. When the second valve core is removed from the second channel, the second elastic reset device can generate a deformation force, and the deformation force makes the second valve core tend to block the second channel.

[0025] According to an embodiment of the present invention, the second elastic reset device comprises a second compression spring, one end of the second compression spring abuts against the inner surface of the second cover, and the other end of the second compression spring abuts against the outer surface of the first cover.

[0026] According to one embodiment of the present invention, it further comprises an air channel, the air channel is used to accommodate air, a part of the air channel is arranged on the peripheral surface of the second valve core, and another part is arranged on the inner wall of the second channel.

[0027] According to one embodiment of the present invention, the first cavity is provided with two input ports.

[0028] An ink dispensing machine comprises the above control valve.

[0029] The present invention provides two channels, the first channel has a smaller capacity and is suitable for a small amount of ink; the second channel has a larger capacity and is suitable for a large amount of ink. The first valve core is used to block the penetration of the first channel, thereby realizing the control of the penetration of the first channel; the second valve core is used to block the second channel, thereby realizing the control of the penetration of the second channel. The first valve core can be linked with the second valve core during the movement process, so as to realize the switching between a small amount of ink and a large amount of ink; and the mechanical structure is simplified. The air channel contains air, which is convenient for providing air pressure to separate the second valve core from the output channel; the first cavity is provided with two input ports, which is convenient for the input of a large amount of ink. The present invention can realize the control of the flow rate of multiple inks. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a structural diagram of the control valve of the present invention;

[0031] Figure 2 for Figure 1 Side view of

[0032] Figure 3 for Figure 2 AA section view;

[0033] Figure 4 for Figure 3 A partial enlarged view of part B;

[0034] Figure 5 This is the appearance diagram of the second valve core. DETAILED DESCRIPTION

[0035] The present invention is described in detail below in conjunction with the accompanying drawings:

[0036] like Figures 1 to 4 As shown, the control valve of this embodiment includes: a first valve core 1, which is movably arranged; a second valve core 2, which is movably arranged, and the second valve core 2 is provided with a first channel 3; the first channel 3 is used to output ink; the first valve core 1 is arranged to block the first channel 3; the first valve core 1 is arranged to be removable from the first channel 3, and when the first valve core 1 is removed from the first channel 3, the first channel 3 can be connected. An output pipe 18, the output pipe 18 is provided with a second channel 23, and the second channel 23 is used to output ink; the first channel 3 is arranged to communicate with the second channel 23, and the inner diameter of the first channel 3 is smaller than the inner diameter of the second channel 23, so the first channel 3 is used to output a small amount of ink, and the second channel 23 is used to output a large amount of ink. The second valve core 2 is arranged to block the second channel 23; the second valve core 2 is arranged to be removable from the second channel 23, and when the second valve core 2 is removed from the second channel 23, the second channel 23 can be connected.

[0037] The present embodiment further includes a driving device, which drives the first valve core 1 to be moved, or drives the first valve core 1 to be moved through a transmission mechanism. The transmission mechanism includes a connecting rod 4, which is axially movable, and the two ends of the connecting rod 4 are respectively connected to the first valve core 1 and the driving device. During the movement of the first valve core 1, the second valve core 2 and the first valve core 1 can be linked. The driving device of the present embodiment includes a motor or a cylinder.

[0038] The second valve core 2 is provided with a first movable channel 5, part of the first movable channel 5 is arranged to cross the first channel 3, part of the first movable channel 5 is arranged to cross the first channel 3, the first movable channel 5 is closed at one end away from the first channel 3, the first valve core 1 is arranged in the first movable channel 5, and the first valve core 1 can be movably arranged along the first movable channel 5.

[0039] This embodiment also includes a first cover 6, which is used to close the end of the first movable channel 5 away from the first channel 3. The connecting rod 4 is arranged to pass through the first cover 6, and the end of the connecting rod 4 connected to the first valve core 1 is located in the first movable channel 5. This end of the connecting rod 4 can be arranged to abut against the first cover 6, thereby driving the movement of the second valve core 2.

[0040] This embodiment further includes a first elastic reset device, which can generate a deformation force when the first valve core 1 is removed from the first channel 3, and the deformation force makes the first valve core 1 have a tendency to block the first channel 3. The first elastic reset device includes a first compression spring 7, one end of which abuts against the inner surface of the first cover 6, and the other end abuts against the end of the connecting rod 4 located in the first moving channel 5.

[0041] The first moving channel 5 described above includes a first section 8 and a second section 9 that are connected and communicate with each other. The diameter of the first section 8 is smaller than that of the second section 9. The size of the first section 8 fits the size of the first valve core 1, including the diameter and length. One end of the connecting rod 4 connected to the first valve core 1 is located within the second section 9. The diameter of the second section 9 fits the outer diameter of the end of the connecting rod 4 located within the second section 9. The end of the connecting rod 4 is sealed. The first section 8 is arranged crosswise with the first channel 3. One end of the second section 9 away from the first section 8 is provided with a first cover 6. The specific sealing arrangement is that a sealing ring 10 is provided radially at the end of the connecting rod 4. The sealing ring 10 is used to further prevent the ink from leaking into the first moving channel 5. The first section 8 is arranged crosswise with the first channel 3. Preferably, the first section 8 passes through the radial direction of the first channel 3 and extends a certain distance outward from the first channel 3. In this way, the first valve core 1 can completely block the first channel 3.

[0042] This embodiment further includes a first housing 12. The first housing 12 is provided with a second moving channel 13, and the second valve core 2 is arranged to be movable along the second moving channel 13. This embodiment further includes a second housing 16. A first cavity 17 is provided within the second housing 16. The first cavity 17 is used to hold ink, and an output pipe 18 is arranged at the outlet of the first cavity 17. Both ends of the first channel 3 are respectively connected and communicate with the second channel 23, or both ends of the first channel 3 are respectively connected and communicate with the second channel 23 and the first cavity 17. In this embodiment, both ends of the first channel 3 are respectively connected and communicate with the second channel 23.

[0043] An opening 22 is provided on the side of the output pipe 18 described above. One end of the second moving channel 13 is provided with a second cover 14, and the other end is arranged at the opening 22 of the output pipe 18. The size of the opening 22 fits the outer diameter of the second valve core 2 and is smaller than the outer diameter of the first cover 6. The inner wall of the output pipe 18 relative to the opening 22 is provided with a first groove 19. One end of the second valve core 2 relative to the first cover 6 fits the first groove 19. The second valve core 2 can pass through the opening 22 from the second moving channel 13 until it reaches the first groove 19 to completely block the second channel 23.

[0044] This embodiment further includes a second elastic reset device. When the second valve core 2 is removed from the second channel 23, the second elastic reset device can generate a deformation force, and this deformation force makes the second valve core 2 tend to block the second channel 23. The second elastic reset device described above includes a second compression spring 15. One end of the second compression spring 15 abuts against the inner surface of the second cover 14, and the other end abuts against the outer surface of the first cover 6. The connecting rod 4 is arranged to pass through the second cover 14. This embodiment further includes a guiding mechanism 24, and the guiding mechanism 24 guides the movement of the connecting rod 4. The guiding mechanism 24 is arranged on the inner wall of the second cover 14.

[0045] The present embodiment further includes an air channel 20, which is used to accommodate air. Part of the air channel 20 is disposed on the circumference of the second valve core 2, and the other part is disposed on the inner wall of the second channel 23. Figure 5 The air passage 20 is shown as a portion of the second valve core 2. The first volume chamber 17 is provided with two input ports 21.

[0046] The ink dispensing machine of this embodiment includes the above-mentioned control valve.

[0047] During use, when ink is not needed, the first valve core 1 is located in the first section 8 of the first movable channel 5, blocking the first channel 3. The second valve core 2 is located in the first groove 19, blocking the second channel 23. At this time, ink will not be output. When a small amount of ink is needed, the driving device drives the connecting rod 4 to move to the right, and the connecting rod 4 moves the first valve core 1 to the right, and the first valve core 1 makes way for the channel, so that the first channel 3 is connected, and ink can flow out of the first channel 3. Since the inner diameter of the first channel 3 is much smaller than the second channel 2, only a small amount of ink is output at this time. At this time, the first compression spring 7 is in a deformed state. If the tension of the connecting rod 4 is removed, the first compression spring 7 returns to a natural state, and the first valve core 1 will be pushed to a state of blocking the first channel 3, and the output of ink will stop.

[0048] When a large amount of ink needs to be output, the driving device further drives the connecting rod 4 to continue to move rightward, and the connecting rod 4 abuts against the first cover 6, thereby pulling the second valve core 2 to move rightward, and the second valve core 2 makes way for the second channel 23 to pass through, and the ink flows out from the second channel 23. At this time, the second compression spring 15 is in a deformed state. If the pulling force of the connecting rod 4 is removed, the second compression spring 15 returns to a natural state, and the second valve core 2 is pushed to a state of blocking the second channel 23, and the ink output stops. The rightward movement is directed to the following: Figure 4 Move to the right as shown.

[0049] The present invention is provided with two channels, the first channel 3 has a smaller capacity and is suitable for the needs of a small amount of ink; the second channel 23 has a larger capacity and is suitable for the needs of a large amount of ink. The first valve core 1 is used to block the penetration of the first channel 3, thereby realizing the control of the penetration of the first channel 3; the second valve core 2 is used to block the second channel 23, thereby realizing the control of the penetration of the second channel 23. The first valve core 1 can be arranged in linkage with the second valve core 2 during the movement, so as to realize the switching between a small amount of ink and a large amount of ink; and the mechanical structure is simplified. The air channel 20 contains air, which is convenient for providing air pressure to separate the second valve core 2 from the output channel; the first cavity 17 is provided with two input ports 21, which is convenient for the large amount of ink input.

[0050] The embodiments in the present invention are only used to illustrate the present invention and do not constitute a limitation on the scope of the claims. Other substantially equivalent alternatives that can be conceived by those skilled in the art are all within the protection scope of the present invention.

Claims

1. A control valve, characterized in that, comprising: a first valve core, the first valve core is movably arranged; a second valve core, the second valve core is movably arranged, the second valve core is provided with a first channel for outputting ink; an output pipe, the output pipe is provided with a second channel for outputting ink, and the first channel and the second channel are communicatively arranged; the first valve core is arranged to block the first channel; the first valve core is arranged to be removable from the first channel, and when the first valve core is removed from the first channel, the first channel can be penetrated; the second valve core is arranged to block the second channel; the second valve core is arranged to be removable from the second channel, and when the second valve core is removed from the second channel, the second channel can be penetrated; the second valve core is provided with a first moving channel, a part of the first moving channel is arranged to cross the first channel, one end of the first moving channel away from the first channel is closed, and the first valve core is arranged in the first moving channel and can move along the first moving channel; the first moving channel includes a first section and a second section that are communicatively connected, the diameter of the first section is smaller than that of the second section, the size of the first section fits the size of the first valve core, one end of the connecting rod connected to the first valve core is located in the second section, the diameter of the second section fits the outer diameter of the end of the connecting rod located in the second section, the end of the connecting rod is hermetically arranged, the first section is arranged to cross the first channel, and a first cover is arranged at one end of the second section away from the first section; further comprising an air channel for accommodating air, and part of the air channel is arranged on the circumferential surface of the second valve core and another part is arranged on the inner wall of the second channel.

2. The control valve according to claim 1, characterized in that, further comprising a driving device, the driving device drives the first valve core to move, or drives the first valve core to move through a transmission mechanism.

3. The control valve according to claim 2, characterized in that, the transmission mechanism includes a connecting rod, the connecting rod is axially movable, and two ends of the connecting rod are respectively connected to the first valve core and the driving device.

4. The control valve according to claim 3, characterized in that, when the first valve core moves, the second valve core can be arranged to be linked with the first valve core.

5. The control valve according to claim 1, characterized in that, further comprising a first elastic reset device, when the first valve core is removed from the first channel, the first elastic reset device can generate a deformation force, and this deformation force makes the first valve core tend to block the first channel.

6. The control valve according to claim 5, characterized in that, further comprising a first cover for closing one end of the first moving channel away from the first channel, the connecting rod passes through the first cover, one end of the connecting rod connected to the first valve core is located in the first moving channel, and this end of the connecting rod can abut against the first cover.

7. The control valve according to claim 6, characterized in that, the first elastic reset device includes a first compression spring, one end of the first compression spring abuts against the inner surface of the first cover, and the other end abuts against the end of the connecting rod located in the first moving channel.

8. The control valve according to claim 6, characterized in that, It further includes a first housing provided with a second moving channel, and the second valve core and the first cover are movably arranged along the second moving channel.

9. The control valve according to claim 8, characterized in that it further includes a second housing with a first cavity provided therein for containing ink, an output pipe is arranged at the outlet of the first cavity, both ends of the first channel are respectively communicated with the second channel, or both ends of the first channel are respectively communicated with the second channel and the first cavity, and the inner diameter of the first channel is smaller than that of the second channel.

10. The control valve according to claim 9, characterized in that the side of the output pipe is open, one end of the second moving channel is provided with a second cover, and the other end is arranged at the opening of the output pipe, the size of the opening fits the outer diameter of the second valve core and is smaller than the outer diameter of the first cover, and a first groove is provided on the inner wall of the output pipe relative to the opening, and one end of the second valve core relative to the first cover fits with the first groove.

11. The control valve according to claim 10, characterized in that it further includes a second elastic reset device, when the second valve core is removed from the second channel, the second elastic reset device can generate a deformation force, and this deformation force makes the second valve core tend to block the second channel.

12. The control valve according to claim 11, characterized in that the second elastic reset device includes a second compression spring, one end of the second compression spring abuts against the inner surface of the second cover, and the other end abuts against the outer surface of the first cover.

13. An ink dispensing machine, characterized in that it includes the control valve according to any one of claims 1-12.

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