Printing apparatus

Abstract

The utility model provides a printing device. The printing device comprises a printing assembly and a plugging structure, the printing assembly comprises a printing needle head (2), and the plugging structure comprises a plugging dredging part (9); the plugging and dredging part (9) is provided with a plugging position and a dredging position, and when the plugging and dredging part (9) is located at the plugging position, the plugging and dredging part (9) can stretch into the printing needle head (2) to plug the printing needle head (2); when the plugging dredging part (9) is located at the dredging position, the plugging dredging part (9) can penetrate out of the printing needle head (2) to dredge the printing needle head (2). The printing device provided by the utility model can solve the problem that the printing slurry solvent in the existing printing device is easy to volatilize at the needle opening, so that the slurry is solidified and blocks the needle opening.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing equipment technical field, specifically, relate to a printing device. BACKGROUND

[0002] 3D printing technology is gradually becoming an indispensable tool in the field of battery manufacturing, especially in the printing process of electrode material, its precise material distribution ability and the ability to shape complex structures open up a new path for the improvement of battery performance. In this series of manufacturing process, the printing needle determines the output accuracy of the slurry and the continuity of printing, which is the key component connecting 3D printing equipment and battery materials. SUMMARY

[0003] The existing printing needle design is usually simple, mainly composed of a single discharge channel, which is easy to cause the printing needle to be blocked due to the volatilization of organic solvents contained in the slurry during use. In the process of electrode printing, when the printing is paused or the equipment is in standby state, the solvent in the slurry volatilizes rapidly at the needle opening, forming a solid deposit and causing the needle opening to be blocked. This blocking phenomenon not only causes the printing process to be interrupted, reducing production efficiency, but also affects the printing quality due to the repeated accumulation of the blockage, and even requires frequent cleaning or replacement of the needle, increasing the manufacturing cost and maintenance complexity.

[0004] The main purpose of the utility model is to provide a printing device, which can solve the problem of needle opening blockage caused by the volatilization and solidification of printing slurry at the needle opening in the existing printing device.

[0005] In order to achieve the above purpose, according to one aspect of the utility model, a printing device is provided, which comprises a printing assembly and a blocking structure, the printing assembly comprises a printing needle, and the blocking structure comprises a blocking and dredging part; the blocking and dredging part has a blocking position and a dredging position, when the blocking and dredging part is in the blocking position, the blocking and dredging part can extend into the printing needle to block the printing needle; when the blocking and dredging part is in the dredging position, the blocking and dredging part can pass out of the printing needle to dredge the printing needle.

[0006] As an embodiment, the printing assembly further comprises a main pipe, the printing needle is arranged at the first end of the main pipe, and the blocking and dredging part extends into the main pipe and extends towards the printing needle.

[0007] As an embodiment, the printing device further comprises a fixed support and a driving part, the printing assembly is arranged at one end of the fixed support, the driving part is arranged at the other end of the fixed support, and the driving part is drivingly connected with the blocking and dredging part.

[0008] As an embodiment, the blocking and dredging part, the main pipe and the printing needle are arranged on the same axis.

[0009] As an implementation form, a sealing member is arranged on the second end of the main pipe, and the blockage passage extends through the sealing member and extends towards the printing needle.

[0010] As an implementation form, a sealing member is arranged on the second end of the main pipe, and a sealing cover is further arranged on the main pipe, the sealing cover covers the sealing member, and the blockage passage extends through the sealing cover and the sealing member and extends towards the printing needle.

[0011] As an implementation form, the driving part comprises a telescopic assembly, a telescopic end of the telescopic assembly is connected with the blockage passage, and the telescopic assembly can drive the blockage passage to perform telescopic movement.

[0012] As an implementation form, the telescopic assembly comprises a driving cylinder and an electromagnetic reversing valve, the driving cylinder has a first piston rod, the blockage passage is drivingly connected with the first piston rod, the electromagnetic reversing valve is connected with the driving cylinder, and the electromagnetic reversing valve can adjust the movement direction of the first piston rod, so that the first piston rod has a first extension position for driving the blockage passage to be located at the blockage position, and a second extension position for driving the blockage passage to be located at the unblocking position.

[0013] As an implementation form, the driving cylinder comprises a first driving cylinder, the first driving cylinder comprises a first piston rod, a second chamber and a first piston, and the first driving cylinder drives the first piston rod to be located at the second extension position through the second chamber and the first piston.

[0014] As an implementation form, the driving cylinder further comprises a second driving cylinder, the second driving cylinder comprises a second piston rod, the second piston rod extends into the second chamber and drives the first piston rod to be located at the first extension position through the first piston, and the second piston rod is in abutting cooperation with the first piston during the driving process.

[0015] As an implementation form, the second driving cylinder comprises a third chamber, a second piston and a fourth chamber, the fourth chamber is communicated with the second chamber, and the second driving cylinder can output the gas in the fourth chamber to the second chamber through the second piston to drive the first piston rod to be located at the first extension position through the first piston.

[0016] As an implementation form, the driving stroke of the second driving cylinder is smaller than the driving stroke of the first driving cylinder.

[0017] The technical scheme of the utility model is applied, the printing needle is responsible for gathering slurry and guiding the extrusion position of the slurry, and the accuracy of slurry printing is ensured. The function of the plugging and dredging part is to extend into the printing needle when printing is paused, quickly plug the needle opening, and prevent the solvent in the slurry from volatilizing to cause the slurry to solidify. When the printing needle is blocked, the plugging and dredging part can actively pass through the needle opening of the printing needle to reach the dredging position, solve the problem of needle opening blockage, and do not need to disassemble the printing head or use other external tools. By arranging the plugging and dredging part, the printing device provided by the utility model can plug the needle opening when printing is paused, thereby avoiding the printing slurry from volatilizing and solidifying at the needle opening to cause the needle opening to be blocked, and the needle opening that has been blocked can also be actively dredged, thereby effectively solving the problem of the printing slurry volatilizing and solidifying at the needle opening to cause the needle opening to be blocked, and improving the printing quality and efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification of the utility model form a part of the utility model and serve to provide further understanding of the utility model, and the illustrative embodiments of the utility model and their descriptions serve to explain the utility model, and do not constitute an improper limitation on the utility model. In the drawings:

[0019] Figure 1 An overall structure schematic view of a printing device in a default state of an embodiment of the utility model is shown.

[0020] Figure 2 An overall structure schematic view of a plugging and dredging part of a printing device in an embodiment of the utility model is shown.

[0021] Figure 3 An overall structure schematic view of the plugging and dredging part of the printing device in one pop-up state of an embodiment of the utility model is shown.

[0022] Figure 4 An overall structure schematic view of the plugging and dredging part of the printing device in another pop-up state of an embodiment of the utility model is shown.

[0023] Figure 5 A pipeline schematic view of a driving part of the printing device in an embodiment of the utility model is shown.

[0024] Among them, the above-mentioned drawings include the following signs:

[0025] 1, fixed support; 2, print needle; 3, main pipe; 4, sealing element; 5, sealing cover; 6, feed pipe; 7, feed cavity; 8, driving part; 81, driving cylinder; 811, first driving cylinder; 8111, first piston rod; 8112, first cavity; 8113, second cavity; 8114, first gas port; 8115, second gas port; 8116, first piston; 812, second driving cylinder; 8121, second piston rod; 8122, third cavity; 8123, third gas port; 8124, second piston; 8125, fourth cavity; 821, first electromagnetic reversing valve; 822, second electromagnetic reversing valve; 83, one-way throttle valve; 9, blockage clearing part. DETAILED DESCRIPTION

[0026] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0027] In combination with Figures 1 to 5 The utility model provides a kind of printing device, which comprises printing assembly and block structure, printing assembly includes print needle 2, and block structure includes blockage clearing part 9;Blockage clearing part 9 has block position and clearing position, when blockage clearing part 9 is in clearing position, blockage clearing part 9 can pass out print needle 2 and clear print needle 2.

[0028] In the above technical scheme, print needle 2 is responsible for gathering slurry and guiding the extrusion position of slurry, ensuring the accuracy of slurry printing. The role of blockage clearing part 9 is to extend into print needle 2 when printing is paused, quickly block the needle port to prevent the solvent in the slurry from evaporating and causing the slurry to solidify. When print needle 2 is blocked, blockage clearing part 9 can actively pass through the needle port of print needle 2 to reach the clearing position, and use its tip or special shape to physically remove or push the blocked slurry, solving the problem of needle port blockage without disassembling the print head or using other external tools. By setting the blockage clearing part, the printing device proposed by the utility model can block the needle port when printing is paused, thereby avoiding the evaporation and solidification of printing slurry at the needle port, and actively clearing the blocked needle port, thereby effectively solving the problem of needle port blockage caused by the evaporation and solidification of printing slurry at the needle port, and improving the printing quality and efficiency.

[0029] In one embodiment, the plugging and dredging part 9 does not contact the inner wall of the needle port of the printing needle 2 when reaching the plugging position, but has a small enough gap with the inner wall of the needle port of the printing needle 2, which can effectively prevent the paste from leaking from the gap, avoid damage to the inner wall of the needle port of the printing needle 2 by the plugging and dredging part 9, and ensure that the plugging and dredging part 9 can smoothly pass through the needle port of the printing needle 2 to dredge the needle port of the printing needle 2.

[0030] In one embodiment of the utility model, the printing assembly further comprises a main pipe 3, the printing needle 2 is arranged at the first end of the main pipe 3, and the plugging and dredging part 9 extends into the main pipe 3 and extends towards the printing needle 2.

[0031] In the above technical solution, the main pipe 3 is used to connect and fix the printing needle 2 and guide the paste, so that the paste can accurately reach the printing needle 2 for extrusion through the main pipe 3. The plugging and dredging part 9 extends into the main pipe 3 and extends towards the printing needle 2, and the main pipe 3 plays a certain guiding role on the plugging and dredging part 9, so that the plugging and dredging part 9 can more accurately plug the printing needle 2.

[0032] In one embodiment of the utility model, the printing device further comprises a fixing support 1 and a driving part 8, the printing assembly is arranged at one end of the fixing support 1, the driving part 8 is arranged at the other end of the fixing support 1, and the driving part 8 is drivingly connected with the plugging and dredging part 9.

[0033] In the above technical solution, the fixing support 1 provides a stable mounting position for the printing assembly and the driving part 8, and supports and positions the printing assembly and the driving part 8. The driving part 8 usually comprises a pneumatic cylinder, a motor or a hydraulic device, and is mainly used to provide power for the extension and retraction of the plugging and dredging part 9 and control the extension and retraction position of the plugging and dredging part 9.

[0034] In one embodiment of the utility model, the plugging and dredging part 9, the main pipe 3 and the printing needle 2 are arranged on the same axis.

[0035] In the above technical solution, the plugging and dredging part 9, the main pipe 3 and the printing needle 2 are arranged on the same axis, so that the plugging and dredging part 9 can be directly aligned with the needle port of the printing needle 2 when moving, precise plugging is realized, and the plugging is not tight due to deviation or angle error is avoided, so that the needle port can be completely closed when printing is paused, and the solvent in the paste is prevented from evaporating outward to cause solidification and blockage of the needle port.

[0036] In one embodiment of the utility model, a sealing element 4 is arranged on the second end of the main pipe 3, and the plugging and dredging part 9 extends towards the printing needle 2 through the sealing element 4.

[0037] In the above technical solution, the sealing member 4 plays a role of isolating the inside of the main pipe 3 from the external environment, preventing external factors such as air, dust, and moisture from affecting the properties of the paste, especially when the paste uses an organic solvent, avoiding the volatilization of the solvent and the pollution of the paste. The sealing member 4 can also effectively prevent the paste from leaking from the end of the main pipe 3 away from the printing needle 2 during transmission, avoiding waste of the paste. At the same time, the blocking and dredging part 9 passes through the sealing member 4 and extends towards the printing needle 2, and the sealing member 4 plays a certain guiding role for the blocking and dredging part 9, making the blocking and dredging part 9 block the printing needle 2 more accurately.

[0038] In one embodiment of the present application, the sealing cover 5 is threadedly connected to the second end of the main pipe 3, the sealing member 4 is arranged between the sealing cover 5 and the main pipe 3 and extends into the second end of the main pipe 3 to seal the main pipe 3, the second end of the main pipe 3 is provided with a hollow narrowing structure, the narrowing structure extends along the axial direction of the main pipe 3, the narrowing structure has opposite first and second ends, wherein the first end of the narrowing structure faces the first end of the main pipe 3, the cross-sectional area of the narrowing structure gradually decreases from the second end to the first end, and the sealing member 4 is arranged at the second end of the narrowing structure. The blocking and dredging part 9 is arranged on the sealing member 4 and the sealing cover 5.

[0039] In the above technical solution, the sealing cover 5 is mainly used to press the sealing member 4 into the narrowing structure, fix the sealing member 4, and improve the sealing effect of the sealing member 4. At the same time, the sealing cover 5 can also seal the main pipe 3, improving the reliability of the sealing of the second end of the main pipe 3. The sealing member 4 is usually made of a material with elasticity such as rubber or silicone, and is used to seal the second end of the main pipe 3. The cross-sectional area of the narrowing structure gradually decreases from the second end to the first end, forming a tapered structure at the second end of the main pipe 3. The sealing member 4 is arranged at the second end of the narrowing structure. As the installation position of the sealing member 4 along the main pipe 3 deepens, the gradually narrowing channel side wall radially extrudes the sealing member 4. On the one hand, the sealing member 4 is in close contact with the side wall of the narrowing structure, thereby improving the blocking effect of the sealing member 4 on the main pipe 3. On the other hand, the extrusion of the narrowing structure on the sealing member 4 is transmitted to the channel in the sealing member 4 for the passage of the blocking and dredging part 9, so that the sealing member 4 extrudes the blocking and dredging part 9 inward, thereby fixing the blocking and dredging part 9. The inner diameter of the narrowing structure is equivalent to the diameter of the blocking and dredging part 9, about 0.3-1.0 mm, which plays a role of restraining and guiding the blocking and dredging part 9. When it is necessary to block or dredge the needle port through the blocking and dredging part 9, the sealing cover 5 can be loosened, and the sealing member 4 can be moved along the axial direction of the main pipe 3 towards the second end of the main pipe 3, thereby reducing the extrusion of the sealing member 4 on the blocking and dredging part 9, and releasing the fixation of the blocking and dredging part 9.

[0040] When the main pipe 3 is sealed, the sealing member 4 is first installed into the second end of the main pipe 3 to preliminarily seal the main pipe 3, and then the sealing cover 5 is screwed with the second end of the main pipe 3 to tightly screw the sealing cover 5, the sealing cover 5 contacts the sealing member 4 and extrudes the sealing member 4 along the axial direction of the main pipe 3 to the first end of the main pipe 3, so as to realize the sealing of the second end of the main pipe 3, and the sealing member 4 is extruded inwardly by the narrowing structure to block the through part 9, so as to realize the fixation of the through part 9. When it is needed to block or dredge the needle port through the through part 9, the sealing cover 5 is unscrewed to reduce the extrusion force of the sealing cover 5 on the sealing member 4 along the axial direction, so that the sealing member 4 can move away from the first end of the main pipe 3, thereby reducing the extrusion force of the inner wall of the narrowing structure on the sealing member 4, and further releasing the fixation of the through part 9, so that the through part 9 can move along the axial direction of the main pipe 3 to complete the blocking or dredging.

[0041] In an embodiment of the utility model, the driving part 8 comprises a telescopic assembly, and the telescopic end of the telescopic assembly is connected with the blocking and dredging part 9. The telescopic assembly can drive the blocking and dredging part 9 to perform telescopic movement.

[0042] In the above technical solution, the telescopic assembly can drive the blocking and dredging part 9 to perform telescopic movement, the position of the blocking and dredging part 9 can be accurately controlled, and the blocking and dredging part 9 can accurately extend into the needle port of the printing needle 2 to block the needle port when needed, and can push out the blockage to dredge when the needle port is blocked. The blocking and dredging part 9 provided by the printing assembly has the functions of rapid blocking and dredging, the possibility of blockage of the printing needle 2 is reduced, the downtime caused by blockage can be shortened, and the printing efficiency and continuity are improved.

[0043] In an embodiment of the utility model, the telescopic assembly comprises a driving cylinder 81 and an electromagnetic reversing valve. The driving cylinder 81 has a first piston rod 8111, the blocking and dredging part 9 is drivingly connected with the first piston rod 8111, and the electromagnetic reversing valve is connected with the driving cylinder 81. The electromagnetic reversing valve can adjust the movement direction of the telescopic end of the first piston rod 8111, so that the first piston rod 8111 has a first extension position for driving the blocking and dredging part 9 to be located at the blocking position, and a second extension position for driving the blocking and dredging part 9 to be located at the dredging position. In this embodiment, the telescopic end of the telescopic assembly refers to the connecting end of the first piston rod 8111 and the blocking and dredging part 9.

[0044] In the technical scheme, the driving cylinder 81 can provide power for the movement of the plugging and dredging part 9 through the extension and retraction of the first piston rod 8111, and ensure that the plugging and dredging part 9 can accurately and quickly plug or remove the needle port of the printing needle 2. The electromagnetic reversing valve is used to adjust the movement direction of the piston rod of the driving cylinder 81, so as to control the plugging and dredging part 9 to realize the extension and retraction action. Through the cooperation of the driving cylinder 81 and the electromagnetic reversing valve, the plugging and dredging part 9 can accurately reach the plugging position to plug the needle port, or the plugging and dredging part 9 can pass through the needle port to reach the dredging position, so as to conveniently dredge the needle port of the printing needle 2, realize efficient plugging and dredging of the plugging and dredging part 9, effectively prevent the needle from being blocked due to solvent volatilization, and ensure the continuity and quality of the printing process.

[0045] In the embodiment, the displacement of the plugging and dredging part 9 can be controlled through the electromagnetic reversing valve. When the plugging and dredging part 9 reaches the plugging position, the working state of the electromagnetic reversing valve can be adjusted, so that the first piston rod 8111 remains at the current position, so that the plugging and dredging part 9 remains at the plugging position. If it is required that the plugging and dredging part 9 continues to displace and passes out of the printing needle 2, the working state of the electromagnetic reversing valve can be continuously adjusted, so that the plugging and dredging part 9 continues to displace towards the needle port of the printing needle 2, until the plugging and dredging part 9 extends out of the needle port of the printing needle 2 and dredges the needle port of the printing needle 2.

[0046] In one embodiment, only one driving cylinder 81 can be provided to realize the adjustment of different positions of the plugging and dredging part 9. The advantage of this scheme is that only one cylinder is used for displacement adjustment, and the cost is low.

[0047] In another embodiment of the utility model, the driving cylinder 81 includes a first driving cylinder 811 and a second driving cylinder 812, the driving stroke of the second driving cylinder 812 is less than the driving stroke of the first driving cylinder 811, the first driving cylinder 811 includes a first piston rod 8111, a second chamber 8113 and a first piston 8116, the first driving cylinder 811 and the second driving cylinder 812 are drivingly connected and can jointly drive the first piston rod 8111 to move to a first extended position, and the first driving cylinder 811 drives the first piston rod 8111 to be located at a second extended position through the second chamber 8113 and the first piston 8116.

[0048] In the technical scheme, the first driving cylinder 811 and the second driving cylinder 812 are the main power sources for the movement of the plugging and dredging part 9, wherein the first driving cylinder 811 is directly connected with the plugging and dredging part 9 at the telescopic end, the first driving cylinder 811 can drive the plugging and dredging part 9 to reach the dredging position, the second driving cylinder 812 is drivingly connected with the first driving cylinder 811, and the first piston rod 8111 is driven to move to the first extended position through the second driving cylinder 812, so as to drive the plugging and dredging part 9 to reach the plugging position. The first driving cylinder 811 comprises a first piston rod 8111, a second chamber 8113 and a first piston 8116, the plugging and dredging part 9 is arranged at the telescopic end of the first piston rod 8111, and the movement of the first piston 8116 can be accurately transmitted to the plugging and dredging part 9; the first piston 8116 is arranged in the first driving cylinder 811, and the first driving cylinder 811 is divided into the second chamber 8113, the pressure in the chamber is increased by inputting gas into the second chamber 8113, so as to drive the first piston 8116 to move to the second extended position, and then drive the plugging and dredging part 9 to reach the dredging position.

[0049] In one embodiment of the utility model, the driving cylinder 81 includes a first driving cylinder 811 and a second driving cylinder 812, the electromagnetic reversing valve includes a first electromagnetic reversing valve 821 and a second electromagnetic reversing valve 822, the second driving cylinder 812 is connected in series at one end of the first driving cylinder 811 away from the plugging and dredging part 9, the first driving cylinder 811 is provided with a first piston 8116, the first piston 8116 is provided with a first piston rod 8111, one end of the first piston rod 8111 away from the first piston 8116 extends out of the first driving cylinder 811 and is connected with the plugging and dredging part 9, the first piston 8116 divides the first driving cylinder 811 into a first chamber 8112 and a second chamber 8113, the chamber where the first piston rod 8111 is located is the first chamber 8112, the first driving cylinder 811 is provided with a first air port 8114 and a second air port 8115, the first air port 8114 communicates with the first chamber 8112, the second air port 8115 communicates with the second chamber 8113, the second driving cylinder 812 is provided with a second piston 8124, one side of the second piston 8124 towards the first driving cylinder 811 is provided with a second piston rod 8121, the second piston 8124 divides the second driving cylinder 812 into a third chamber 8122 and a fourth chamber 8125, the third chamber 8122 is a rodless chamber away from the second piston rod 8121, the second driving cylinder 812 is provided with a third air port 8123, the third air port 8123 communicates with the third chamber 8122, the first air port 8114 is connected with the A port of the first electromagnetic reversing valve 821, the third air port 8123 is connected with the B port of the first electromagnetic reversing valve 821, the second air port 8115 is connected with the A port of the second electromagnetic reversing valve 822, one end of the second piston rod 8121 away from the second piston 8124 can extend into the second chamber 8113 and drive the first piston rod 8111 to be in the first extended position through the first piston 8116, during the driving process, the second piston rod 8121 abuts with the first piston 8116.

[0050] In the embodiment, the first electromagnetic reversing valve 821 is a two-position five-way electromagnetic reversing valve, the two-position five-way electromagnetic reversing valve is provided with an A port, a B port, a T port, a P port and an S port, when the two-position five-way electromagnetic reversing valve is in the first working position, the A port communicates with the T port, the B port communicates with the P port, when the two-position five-way electromagnetic reversing valve is in the second working position, the A port communicates with the P port, the B port communicates with the S port, the second electromagnetic reversing valve 822 is a two-position three-way electromagnetic reversing valve, the two-position three-way electromagnetic reversing valve is provided with an A port, a P port and a T port, when the two-position three-way electromagnetic reversing valve is in the first working position, the A port communicates with the P port, when the two-position three-way electromagnetic reversing valve is in the second working position, the A port communicates with the T port.

[0051] In the above technical solution, the first piston 8116 is used to divide the first driving cylinder 811 into a first chamber 8112 and a second chamber 8113, and provides a mounting base for the first piston rod 8111. The first piston rod 8111 extends out of the first driving cylinder 811 and is directly connected with the plugging and dredging part 9, so that the movement of the first piston 8116 in the first driving cylinder 811 can be transmitted to the plugging and dredging part 9, driving the plugging and dredging part 9 to realize the extension and retraction movement. The second piston 8124 is used to divide the second driving cylinder 812 into a third chamber 8122 and a fourth chamber 8125, and provides a mounting base for the second piston rod 8121. The second driving cylinder 812 is connected in series at one end of the first driving cylinder 811 away from the plugging and dredging part 9, and the extension end of the second piston rod 8121 is in driving cooperation with the first piston 8116 of the first driving cylinder 811, so that the movement of the second piston 8124 can be transmitted to the first piston 8116 through the second piston rod 8121, and the first piston rod 8111 is driven to move by the first piston 8116. The first chamber 8112, the second chamber 8113, the third chamber 8122 and the fourth chamber 8125 are used to accommodate gas in the driving cylinder. The first gas port 8114, the second gas port 8115 and the third gas port 8123 are arranged on the driving cylinder, and each chamber is communicated with an electromagnetic reversing valve through the first gas port 8114, the second gas port 8115 and the third gas port 8123, so as to realize the delivery and direction control of the gas, thereby controlling the movement of the plugging and dredging part 9 in different strokes and different directions. The end of the second piston rod 8121 of the second driving cylinder 812 away from the second piston 8124 can extend into the second chamber 8113. During driving, the second piston rod 8121 is in abutting cooperation with the first piston 8116, so that the second piston rod 8121 can transmit the driving force of the second driving cylinder 812 to the first piston 8116, thereby driving the first piston rod 8111 to move to the first extension position.

[0052] When it is necessary to block the needle port, the two-position five-way electromagnetic reversing valve is in the first working position, at this time, the A port is in communication with the T port, and the B port is in communication with the P port. The gas enters the two-position five-way electromagnetic reversing valve through the P port, and then is delivered to the third chamber 8122 connected with the B port through the B port. The air pressure in the third chamber 8122 increases, pushing the second piston 8124 and the second piston rod 8121 thereon to move towards the first drive cylinder 811, so that the telescopic end of the second piston rod 8121 extends into the second chamber 8113 from the second drive cylinder 812 and abuts against the first piston 8116. Then the second piston rod 8121 pushes the first piston 8116 and the first piston rod 8111 thereon to move towards the printing needle 2. In the process of movement of the second piston rod 8121 into the first drive cylinder 811, the air in the fourth chamber 8125 is compressed, and the pressure gradually increases. When the air pressure in the fourth chamber 8125 balances with the air pressure in the third chamber 8122, the first piston rod 8111 remains at the current position, at this time, the first piston rod 8111 moves to the first extended position. In the driving process, the gas in the first chamber 8112 is delivered from the A port of the two-position five-way electromagnetic reversing valve to the two-position five-way electromagnetic reversing valve through the first gas port 8114. At this time, the A port of the two-position five-way electromagnetic reversing valve is in communication with the T port, so as to complete the exhaust and pressure relief of the first chamber 8112. At the same time, the A port of the two-position three-way electromagnetic reversing valve is in communication with the T port, which can effectively avoid the formation of negative pressure in the second chamber 8113, and ensure the smooth pushing out of the first piston rod 8111. Through the abutting cooperation of the second piston rod 8121 and the first piston 8116, the first piston rod 8111 can move to the first extended position, so as to drive the blocking and dredging part 9 to reach the blocking position, realizing the effect of blocking the needle port by the blocking and dredging part 9.

[0053] When it is necessary to further dredge the needle port after the blocking and dredging part 9 reaches the blocking position, the two-position three-way electromagnetic reversing valve is in the first working position, that is, the A port is in communication with the P port. The gas is delivered into the second chamber 8113 through the A port of the two-position three-way electromagnetic reversing valve from the P port of the two-position three-way electromagnetic reversing valve. The air pressure in the second chamber 8113 increases, pushing the first piston 8116 and the first piston rod 8111 connected thereto to continue to move towards the printing needle 2, so as to drive the blocking and dredging part 9 to pass out of the printing needle 2 to reach the dredging position, pushing the blockage at the needle port of the printing needle 2 out to the outside of the printing needle 2, thereby realizing the effect of dredging.

[0054] When it is needed to retract the blockage clearing part 9 from the clearing position, the two-position three-way electromagnetic reversing valve adjusts the gas path to be in the second working position in which the A port is communicated with the T port, and the two-position five-way electromagnetic reversing valve adjusts the gas path to be in the second working position in which the A port is communicated with the P port, at this time, the P port of the first electromagnetic reversing valve 821 inputs the gas into the first chamber 8112 through the A port, and drives the first piston 8116 to move away from the printing needle 2, so as to compress the space of the second chamber 8113, and the air in the second chamber 8113 is delivered to the A port of the two-position three-way electromagnetic reversing valve through the second gas port 8115, and the A port is communicated with the T port, so as to complete the exhaust and pressure relief of the second chamber 8113, and realize the effect that the blockage clearing part 9 is retracted away from the printing needle 2. When the first piston 8116 moves away from the printing needle 2 to abut against the second piston rod 8121, the blockage clearing part 9 has been retracted from the clearing position to the blockage position.

[0055] After the blockage clearing part 9 is retracted to the blockage position, when it is needed to completely retract the blockage clearing part 9 to the initial position, the P port of the two-position five-way electromagnetic reversing valve continues to input the gas into the first chamber 8112 through the A port, and drives the first piston 8116 to push the second piston rod 8121 and the second piston 8124 connected with the second piston rod 8121 to move away from the printing needle 2, at this time, the gas in the third chamber 8122 is delivered to the B port of the two-position five-way electromagnetic reversing valve through the third gas port 8123, and the B port is communicated with the S port, so as to complete the exhaust and pressure relief of the third chamber 8122, and realize the effect that the blockage clearing part 9 is retracted from the blockage position to the initial position.

[0056] In an embodiment of the utility model, the second driving cylinder 812 includes the third chamber 8122, the second piston 8124 and the fourth chamber 8125, the fourth chamber 8125 is communicated with the second chamber 8113, and the second driving cylinder 812 can output the gas in the fourth chamber 8125 to the second chamber 8113 through the second piston 8124, so as to drive the first piston rod 8111 to be in the first extending position through the first piston 8116.

[0057] In the above technical solution, the second piston 8124 divides the second drive cylinder 812 into a third chamber 8122 and a fourth chamber 8125, wherein the fourth chamber 8125 is the chamber on the side of the second piston 8124 facing the first drive cylinder 811, and the fourth chamber 8125 is in communication with the second chamber 8113, so that the second drive cylinder 812 can output the gas in the fourth chamber 8125 to the second chamber 8113 through the second piston 8124, thereby increasing the gas pressure in the second chamber 8113 and pushing the first piston 8116 to move in the direction of the needle port, thereby driving the first piston rod 8111 to be in the first extended position, i.e., the blockage part 9 reaches the blocking position, achieving the effect of blocking the needle port by the blockage part 9.

[0058] When it is necessary to block the needle port, the two-position five-way electromagnetic reversing valve is in the first working position, at this time, the gas enters the third chamber 8122 through the P port, the two-position five-way electromagnetic reversing valve and the B port, the gas pressure in the third chamber 8122 increases, pushing the second piston 8124 to move in the direction of the first drive cylinder 811, since the fourth chamber 8125 is in communication with the second chamber 8113, the second piston 8124 delivers the air in the fourth chamber 8125 to the second chamber 8113, thereby pushing the first piston 8116 and the first piston rod 8111 thereon to move in the direction of the printing needle 2, a part of the gas in the first chamber 8112 is delivered from the A port of the two-position five-way electromagnetic reversing valve to the two-position five-way electromagnetic reversing valve through the first gas port 8114, at this time, the A port of the two-position five-way electromagnetic reversing valve is in communication with the T port, thereby completing the exhaust and pressure relief of a part of the gas in the first chamber 8112. Since the fourth chamber 8125 is in communication with the second chamber 8113 to form a communication chamber, the gas pressures in the fourth chamber 8125 and the second chamber 8113 are equal, when the blockage part 9 reaches the blocking position, the gas pressure in the third chamber 8122 is maintained, ensuring that the blockage part 9 can be kept in the blocking position, and ensuring good blocking effect.

[0059] When the blockage dredging part 9 reaches the blockage position, and the needle port needs to be further dredged, the two-position five-way electromagnetic reversing valve remains in the first working position, and the two-position three-way electromagnetic reversing valve is in the first working position. The gas is delivered into the second chamber 8113 through the A port of the two-position three-way electromagnetic reversing valve from the P port, the pressure in the communication chamber increases, the first piston 8116 and the first piston rod 8111 connected thereto are continuously moved in the direction of the printing needle 2, thereby driving the blockage dredging part 9 to pass through the printing needle 2 to reach the dredging position, and the blockage at the needle port of the printing needle 2 is pushed out to the outside of the printing needle 2, thereby achieving the effect of dredging. In the process of inputting the gas into the second chamber 8113 to push the first piston 8116 to move in the direction of the printing needle 2, the two-position five-way electromagnetic reversing valve is in the first working position and inputs the gas into the third chamber 8122, so that the pressure in the third chamber 8122 is consistent with or greater than the gas pressure in the second chamber 8113, thereby avoiding the problem that the gas pressure in the second chamber 8113 is greater than that in the third chamber 8122, so that the second piston 8124 retreats in the direction of the third chamber 8122, resulting in that the blockage dredging part 9 cannot accurately reach the dredging position.

[0060] When it is needed to retract the plugging and dredging part 9 from the dredging position, the two-position three-way electromagnetic reversing valve is adjusted to the second working position to make the A port communicate with the T port, and the two-position five-way electromagnetic reversing valve is adjusted to the second working position to make the A port communicate with the P port and the B port communicate with the S port, at this time the two-position three-way electromagnetic reversing valve makes the communication chamber communicate with the gas return chamber to make the pressure inside the communication chamber equal to the pressure in the gas return chamber, at this time the gas pressure in the first chamber 8112 is greater than the gas pressure in the second chamber 8113, thereby pushing the first piston 8116 to move in the direction of the second piston rod 8121, at this time the gas in the second chamber 8113 is delivered to the A port of the two-position three-way electromagnetic reversing valve through the second gas port 8115, the A port communicates with the T port, thereby realizing the exhaust and pressure relief of the second chamber 8113, so that the first piston 8116 returns to the first extended position, at this time the first piston 8116 abuts against the second piston rod 8121, and the plugging and dredging part 9 is in the plugging position. Then high-pressure gas is continuously introduced into the first chamber 8112, because the second chamber 8113 communicates with the gas return chamber through the second gas port 8115, and the third chamber 8122 communicates with the B port of the two-position five-way electromagnetic reversing valve through the third gas port 8123, the B port communicates with the S port, therefore the gas pressure in the third chamber 8122 is less than the gas pressure in the first chamber 8112, under the action of the gas pressure in the first chamber 8112, the first piston 8116 is pushed to move in the direction away from the needle port, thereby driving the first piston rod 8111 on the first piston 8116 and the plugging and dredging part 9 arranged at the telescopic end of the first piston rod 8111 to retract, the second piston rod 8121 is pushed to move in the direction away from the needle port in the movement process of the first piston 8116, thereby driving the second piston 8124 to move in the direction away from the needle port, in the movement process of the second piston 8124 in the direction away from the needle port, because the second chamber 8113 communicates with the fourth chamber 8125, therefore the gas in the second chamber 8113 is supplemented into the fourth chamber 8125, thereby avoiding the negative pressure generated in the fourth chamber 8125, the gas in the third chamber 8122 is discharged from the B port and the S port of the two-position five-way electromagnetic reversing valve to the atmosphere through the third gas port 8123, thereby realizing the exhaust and pressure relief of the third chamber 8122. When the second piston 8124 moves to the end away from the telescopic end of the second chamber 8113, the plugging and dredging part 9 is completely retracted from the plugging position to the initial position.

[0061] In an embodiment of the utility model, the second driving cylinder 812 includes a second piston rod 8121, and the telescopic end of the second piston rod 8121 is fixedly connected with the cylinder body of the first driving cylinder 811.

[0062] In the above technical scheme, when it is necessary to block the needle port, the second piston rod 8121 in the second driving cylinder 812 moves to the direction of the needle port under the action of the internal gas pressure of the second driving cylinder 812, and the telescopic end of the second piston rod 8121 is connected to one end of the first driving cylinder 811 away from the blocking and dredging part 9, so that the second piston rod 8121 can push the cylinder body of the first driving cylinder 811 to move to the direction of the printing needle 2, so that the first piston rod 8111 of the first driving cylinder 811 is in the first extended position, that is, the blocking and dredging part 9 reaches the blocking position, and the effect of blocking the needle port by the blocking and dredging part 9 is realized.

[0063] When it is necessary to dredge the needle port, at this time, the first piston rod 8111 of the first driving cylinder 811 can be controlled to extend relative to the cylinder body of the first driving cylinder 811, so that the first piston rod 8111 reaches the second extended position, and the effect of dredging the needle port by the blocking and dredging part 9 is realized.

[0064] In the embodiment, the two driving cylinders are independent and form a series structure, and the gas paths of the two cylinders are independent, so that the extension or retraction of the piston rod can be performed according to the conventional operation of the cylinder, which will not be described herein.

[0065] In an embodiment of the utility model, the printing device further comprises a one-way throttle valve 83, which is arranged between the air port and the electromagnetic reversing valve.

[0066] In the above technical scheme, the one-way throttle valve 83 can adjust the gas flow speed from the air port to the electromagnetic reversing valve, stabilize the working pressure in the cylinder, adjust the moving speed and acceleration / deceleration characteristics of the piston, make the movement of the blocking and dredging part 9 more smooth, and thus improve the stability of the piston and the positioning accuracy of the blocking and dredging part 9. In addition, the occurrence of gas hammer effect can be avoided, the entire pneumatic system is protected, and the service life of the equipment is prolonged.

[0067] In an embodiment of the utility model, the main pipe 3 is hollow after being connected with the printing needle 2, and forms a material conveying cavity 7, and the cross-sectional area of the material conveying cavity 7 gradually decreases from one end away from the needle port of the printing needle 2 to the needle port.

[0068] In the above technical scheme, the material conveying cavity 7 is mainly used for accommodating and conveying the printing paste, and the gradually decreasing cross-sectional area design can accelerate the flow of the paste in the material conveying cavity 7 and reduce the residence time of the fluid in the pipeline, which helps to prevent the solvent in the paste from volatilizing and solidifying, and ensures that the paste can maintain a good flow state during the conveying process, thereby improving the printing quality and efficiency.

[0069] In an embodiment of the utility model, the printing assembly further comprises a material conveying pipe 6, which is arranged on the main pipe 3 and is internally provided with a material conveying channel, and the material conveying channel is in communication with the material conveying cavity 7.

[0070] In the above technical solution, the feed pipe 6 is used to transport the printing paste from the external feeding device to the feed cavity 7, realizing continuous feeding. At the same time, the transport process of the printing paste is completely sealed through the feed pipe 6, avoiding oxidation and deterioration or volatilization and solidification of the printing paste, so as to ensure good printing quality and effect and reduce the possibility of paste solidification.

[0071] In an embodiment of the present application, the position where the feed passage of the feed pipe 6 communicates with the feed cavity 7 is lower than the end of the feed cavity 7 away from the needle port of the printing needle 2.

[0072] In the above technical solution, by setting the communication position at the middle part of the feed cavity 7, the feed cavity 7 can buffer and regulate the paste just transported into the main pipe 3, ensuring that the paste passes through the printing needle 2 uniformly and smoothly, thereby improving the printing quality and effect.

[0073] In an embodiment of the present application, the side wall of the plugging and unblocking part 9 is a smooth side wall, or the side wall of the plugging and unblocking part 9 is provided with patterns.

[0074] In the above technical solution, the main purpose of the smooth side wall design is to reduce friction, so that the plugging and unblocking part 9 can be plugged or unblocked more quickly and smoothly, which helps to improve the response speed and operation efficiency of the printing needle device. At the same time, the smooth side wall also helps to reduce the adhesion of the paste on the plugging and unblocking part 9, avoid paste residue, and maintain good printing quality and equipment cleanliness. The design of the patterned side wall pays more attention to enhancing the contact between the plugging and unblocking part 9 and the paste, especially in the unblocking operation. The patterns or textures can increase friction, which helps to more effectively push or break the blockage during unblocking. In scenarios requiring fast response and frequent plugging and unblocking operations, the smooth side wall design can provide better operation efficiency and equipment maintenance convenience. In scenarios where the paste has high viscosity, solidifies easily, or the blockage is difficult to remove, the patterned side wall design can provide stronger unblocking capability to ensure the smoothness of the printing needle.

[0075] In an embodiment of the present application, the plugging and unblocking part 9 includes an unblocking needle, and the end of the unblocking needle facing the printing needle 2 is a pointed head, a round head or a flat head.

[0076] In the above technical solution, the unblocking needle with different end shapes can meet different plugging and unblocking situations encountered in the process of battery electrode. The pointed head design is suitable for applications requiring precise plugging and strong unblocking, while the round head and flat head designs are suitable for applications requiring gentle handling or large-area pushing. By providing unblocking needles with different end shapes, the adaptability and efficiency of the printing needle device are improved, which can effectively prevent paste solidification and blockage.

[0077] In one embodiment of the present application, the printing needle 2 is threadedly connected with the main pipe 3.

[0078] In the above technical solution, the threaded connection allows the printing needle 2 to be easily detached from the main pipe 3 when needed, without the need for complex tools or skills, greatly improving the maintenance efficiency of the equipment. At the same time, when it is necessary to print more viscous paste or perform more delicate printing, the printing needle with different aperture or characteristics can be conveniently replaced to adapt to new printing requirements. In addition, the threaded connection has good sealing performance, which helps to reduce the volatilization of the solvent in the paste, thereby maintaining the fluidity of the paste and reducing the risk of blockage.

[0079] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects: The printing needle 2 is responsible for gathering paste and guiding the extrusion position of the paste, ensuring the accuracy of paste printing. The role of the plugging and dredging part 9 is to extend into the printing needle 2 when printing is paused, quickly plug the needle opening, and prevent the volatilization of the solvent in the paste from causing the paste to solidify. When the printing needle 2 is blocked, the plugging and dredging part 9 can actively pass through the needle opening of the printing needle 2 to reach the dredging position, and use its tip or special shape to physically remove or push the blocked paste, solving the problem of needle opening blockage without the need to disassemble the print head or use other external tools. By setting the plugging and dredging part, the printing device proposed by the present application can plug the needle opening when printing is paused, thereby avoiding the volatilization and solidification of the printing paste at the needle opening, causing the needle opening to be blocked. At the same time, the needle opening that has been blocked can also be actively dredged, thereby effectively solving the problem of needle opening blockage caused by the volatilization and solidification of the printing paste at the needle opening, and improving the printing quality and efficiency.

[0080] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0081] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, work, device, component and / or combination thereof.

[0082] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A printing device, characterized by, The printing assembly comprises a printing needle (2) and a blocking structure, the blocking structure comprises a blocking and unblocking part (9); the blocking and unblocking part (9) has a blocking position and an unblocking position, when the blocking and unblocking part (9) is in the blocking position, the blocking and unblocking part (9) can extend into the printing needle (2) to block the printing needle (2); when the blocking and unblocking part (9) is in the unblocking position, the blocking and unblocking part (9) can extend out of the printing needle (2) to unblock the printing needle (2).

2. The printing device according to claim 1, characterized by The printing assembly further comprises a main pipe (3), the printing needle (2) is arranged at the first end of the main pipe (3), and the blocking and unblocking part (9) extends into the main pipe (3) and extends towards the printing needle (2).

3. The printing device according to any one of claims 1 or 2, characterized in that, The printing device further comprises a fixed support (1) and a driving part (8), the printing assembly is arranged at one end of the fixed support (1), the driving part (8) is arranged at the other end of the fixed support (1), and the driving part (8) is drivingly connected with the blocking and unblocking part (9).

4. The printing device of claim 2, wherein, The blocking and unblocking part (9), the main pipe (3) and the printing needle (2) are arranged on the same axis.

5. The printing device of claim 2, wherein, A sealing member (4) is arranged at the second end of the main pipe (3), the blocking and unblocking part (9) passes through the sealing member (4) and extends towards the printing needle (2); and / or, a sealing member (4) is arranged at the second end of the main pipe (3), and a sealing cover (5) is further arranged on the main pipe (3), the sealing cover (5) covers the sealing member (4), and the blocking and unblocking part (9) passes through the sealing cover (5) and the sealing member (4) and extends towards the printing needle (2).

6. The printing device of claim 3, wherein, The driving part (8) comprises a telescopic assembly, the telescopic end of the telescopic assembly is connected with the blocking and unblocking part (9), and the telescopic assembly can drive the blocking and unblocking part (9) to perform telescopic movement.

7. The printing device of claim 6, wherein, The telescopic assembly comprises a driving cylinder (81) and an electromagnetic reversing valve, the driving cylinder (81) has a first piston rod (8111), the blocking and unblocking part (9) is drivingly connected with the first piston rod (8111), the electromagnetic reversing valve is connected with the driving cylinder (81), and the electromagnetic reversing valve can adjust the movement direction of the first piston rod (8111) so that the first piston rod (8111) has a first extension position for driving the blocking and unblocking part (9) to be located at the blocking position and a second extension position for driving the blocking and unblocking part (9) to be located at the unblocking position.

8. The printing device of claim 7, wherein, The driving cylinder (81) comprises a first driving cylinder (811), the first driving cylinder (811) comprises the first piston rod (8111), a second cavity (8113) and a first piston (8116), and the first driving cylinder (811) drives the first piston rod (8111) to be located at the second extension position through the second cavity (8113) and the first piston (8116).

9. The printing device of claim 8, wherein, The driving cylinder (81) further comprises a second driving cylinder (812); the second driving cylinder (812) comprises a second piston rod (8121) which extends into the second cavity (8113) and drives the first piston rod (8111) to be in the first extended position through the first piston (8116), and the second piston rod (8121) is in abutting cooperation with the first piston (8116) during the driving process.

10. The printing device of claim 9, wherein, The driving stroke of the second driving cylinder (812) is smaller than that of the first driving cylinder (811).

11. The printing device of claim 9, wherein, The second driving cylinder (812) comprises a third cavity (8122), a second piston (8124) and a fourth cavity (8125), the fourth cavity (8125) is communicated with the second cavity (8113), and the second driving cylinder (812) can output the gas in the fourth cavity (8125) to the second cavity (8113) through the second piston (8124) to drive the first piston rod (8111) to be in the first extended position through the first piston (8116).

Images