A series-connected servo valve mechanism

Abstract

The present invention discloses a series servo valve mechanism, which includes a driving motor, a first valve seat, a second valve seat, a first guide block, a first eccentric wheel, a second guide block, a second eccentric wheel, a first eccentric shaft, a second eccentric shaft, a first valve core seat, a second valve core seat, a first valve core, a second valve core, a first valve rod, a second valve rod, a first valve core plug and a second valve core plug. The first guide block can drive the first valve core plug to move through the first valve rod and cooperate with the first valve core to realize the opening and closing of the internal channel of the first valve core seat. The second guide block can drive the second valve core plug to move through the second valve rod and cooperate with the second valve core to realize the opening and closing of the internal channel of the second valve core seat. This series servo valve mechanism has the advantages of simple structure and low implementation cost. In practical applications, it can overcome the problem of signal delay of parallel servo valves, improve the coating efficiency and coating quality.

Description

Technical Field

[0001] The present invention relates to the field of lithium battery production, and particularly to a series servo valve mechanism. Background Art

[0002] In the field of lithium battery production, coating the substrate is a very important process. The efficiency and quality of coating directly affect the production efficiency and quality of lithium batteries, and play a crucial role in the entire lithium battery production.

[0003] During the process of coating the lithium battery substrate, as the coating speed continues to increase, the action frequency of the servo valve increases, and the response time requirement of the servo valve becomes shorter and shorter. In the prior art, a parallel servo valve mechanism is generally used to control the coating slurry during the coating process to achieve intermittent coating. When the coating speed is increased to more than 30 m / min, the signal response between two parallel servo valves in the prior art will also approach 8 ms. If there is a slight signal delay, the thickness of the head and tail of the coating will be out of tolerance, affecting the coating quality.

[0004] Therefore, the purpose of the present invention is to provide a new technical solution to solve the existing technical defects. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a series servo valve mechanism, which solves the technical defects such as signal delay, out-of-tolerance thickness of the head and tail of the coating, and poor coating quality in the existing intermittent coating process.

[0006] The technical solution adopted by the present invention to solve its technical problems is:

[0007] A series-connected servo valve mechanism includes a driving motor, a first valve seat, and a second valve seat. A first guiding block and a first eccentric wheel are installed in the first valve seat. A second guiding block and a second eccentric wheel are installed in the second valve seat. A first eccentric shaft is provided on the first eccentric wheel, and the first eccentric shaft is movably connected to the first guiding block and can drive the first guiding block to reciprocate in the first valve seat. A second eccentric shaft is provided on the second eccentric wheel, and the second eccentric shaft is movably connected to the second guiding block and can drive the second guiding block to reciprocate in the second valve seat. The output end of the driving motor is connected to the first eccentric wheel and can drive the first eccentric wheel to rotate. The first eccentric shaft is connected to the second eccentric wheel and can drive the second eccentric wheel to rotate. The first valve seat and the second valve seat are respectively connected to a first valve core seat and a second valve core seat. A first valve core and a second valve core are respectively installed in the first valve core seat and the second valve core seat. A first valve rod and a second valve rod are respectively fixedly connected to the first guiding block and the second guiding block. The first valve rod extends into the first valve core seat and is installed with a first valve core plug cooperating with the first valve core. The second valve rod extends into the second valve core seat and is installed with a second valve core plug cooperating with the second valve core. The first guiding block can drive the first valve core plug to move through the first valve rod and cooperate with the first valve core to realize the opening and closing of the internal channel of the first valve core seat. The second guiding block can drive the second valve core plug to move through the second valve rod and cooperate with the second valve core to realize the opening and closing of the internal channel of the second valve core seat.

[0008] As an improvement of the above technical solution, a first connection head and a second connection head are respectively provided on the first valve core seat and the second valve core seat. A first outlet and a second outlet are respectively provided on the first connection head and the second connection head. A first inlet is provided on the first valve core seat. A second inlet is provided on the second valve core seat. The second inlet is communicated with the first inlet.

[0009] As a further improvement of the above technical solution, the first valve core seat has a connecting pipe. The connecting pipe is communicated with the first inlet. The connecting pipe is communicated with the second inlet and is fixedly connected by a second clamp. A sealing ring is provided between the connecting pipe (132) and the second inlet.

[0010] As a further improvement of the above technical solution, the first connection head is fixedly connected to the first valve core seat by a third clamp. The second connection head is fixedly connected to the second valve core seat by a fourth clamp. Sealing rings are provided between the first connection head and the first valve core seat and between the second connection head and the second valve core seat. The first valve rod extends into the first connection head. The first valve core plug is located in the inner cavity of the first connection head. The second valve rod extends into the second connection head. The second valve core plug is located in the inner cavity of the second connection head.

[0011] As a further improvement of the above technical solution, a first coupling is provided at the output end of the driving motor and is connected to the first eccentric wheel through the first coupling. The driving motor is fixedly installed on the side of the first valve seat, and the driving motor is fixedly connected to the first valve seat through a first connecting clamp.

[0012] As a further improvement of the above technical solution, a transfer shaft is provided at the output end of the first eccentric shaft. A second coupling is provided between the transfer shaft and the second eccentric wheel. The first eccentric shaft can drive the second eccentric wheel to rotate through the transfer shaft and the second coupling. A first scale disk and a second scale disk are provided outside the second coupling. The pointer of the first scale disk rotates synchronously with the first eccentric shaft, and the pointer of the second scale disk rotates synchronously with the second eccentric wheel.

[0013] As a further improvement of the above technical solution, a first guide sleeve is provided inside the first valve seat, and the first valve stem is installed in the first guide sleeve. A second guide sleeve is provided inside the second valve seat, and the second valve stem is installed in the second guide sleeve.

[0014] As a further improvement of the above technical solution, the first eccentric wheel includes a first eccentric wheel shaft portion and a first eccentric wheel disk. The first eccentric wheel shaft portion is rotatably installed inside the first valve seat, and the first eccentric shaft is fixedly installed on the first eccentric wheel disk. The second eccentric wheel includes a second eccentric wheel shaft portion and a second eccentric wheel disk. The second eccentric wheel shaft portion is rotatably installed inside the second valve seat, and the second eccentric shaft is fixedly installed on the second eccentric wheel disk.

[0015] As a further improvement of the above technical solution, the first valve stem is fixedly connected to the upper part of the first guide block through a first screw, and the second valve stem is fixedly connected to the upper part of the second guide block through a second screw. A first guide rod is fixedly connected to the lower part of the first guide block through a third screw. The first guide rod extends from the bottom of the first valve seat to the outside of the first valve seat. A through hole for mating with the first guide rod is provided on the first valve seat. A second guide rod is fixedly connected to the lower part of the second guide block through a fourth screw. The second guide rod extends from the bottom of the second valve seat to the outside of the second valve seat. A through hole for mating with the second guide rod is provided on the second valve seat.

[0016] As a further improvement of the above technical solution, the first valve seat and the first valve core seat are fixedly connected by a fifth clamp, the second valve seat and the second valve core seat are fixedly connected by a sixth clamp, sealing rings are arranged between the first valve seat and the first valve core seat and between the second valve seat and the second valve core seat, the first valve seat and the second valve seat are fixedly connected by a seventh clamp, the first valve seat has a first valve seat cavity inside, the first guide block is installed in the first valve seat cavity, the second valve seat has a second valve seat cavity inside, and the second guide block is installed in the second valve seat cavity.

[0017] The beneficial effects of the present invention are as follows: The present invention provides a series servo valve mechanism. This series servo valve mechanism drives the first valve core plug and the second valve core plug to move through the same driving motor, which can effectively eliminate the signal delay in the existing parallel servo valve, is beneficial to improving the phenomenon of coating head and tail out-of-tolerance caused by servo signal delay, improves the coating quality, and is also beneficial to realizing high-speed coating and improving the coating efficiency; In addition, the action of this servo valve can be adjusted according to actual needs, and it has the characteristics of high application flexibility and strong versatility.

[0018] In summary, this series servo valve mechanism solves the technical defects in the prior art such as signal delay, coating head and tail thickness out-of-tolerance, and poor coating quality during intermittent coating. Brief Description of the Drawings

[0019] The following further describes the present invention in conjunction with the drawings and embodiments.

[0020] Figure 1 is the assembly schematic diagram of the present invention;

[0021] Figure 2 is the assembly schematic diagram of the present invention from another angle;

[0022] Figure 3 is the assembly schematic diagram of the present invention from the third angle;

[0023] Figure 4 is the sectional structure schematic diagram of the present invention;

[0024] Figure 5 is the schematic diagram of the servo valve angle adjustment in the present invention. Detailed Embodiments

[0025] The concept, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention. In addition, all connection / linkage relationships involved in the patent do not simply refer to the direct connection of components, but refer to the formation of a more optimal connection structure by adding or reducing connection accessories according to specific implementation situations. Each technical feature in the present invention can be interactively combined on the premise of not conflicting with each other. Refer to Figures 1-5 .

[0026] A series servo valve mechanism includes a drive motor 9, a first valve seat 11, and a second valve seat 12. A first guide block 21 and a first eccentric wheel 31 are installed in the first valve seat 11. A second guide block 22 and a second eccentric wheel 32 are installed in the second valve seat 12. A first eccentric shaft 33 is provided on the first eccentric wheel 31, and the first eccentric shaft 33 is movably connected to the first guide block 21 and can drive the first guide block 21 to reciprocate in the first valve seat 11. A second eccentric shaft 34 is provided on the second eccentric wheel 32, and the second eccentric shaft 34 is movably connected to the second guide block 22 and can drive the second guide block 22 to reciprocate in the second valve seat 12. The output end of the drive motor 9 is connected to the first eccentric wheel 31 and can drive the first eccentric wheel 31 to rotate. The first eccentric shaft 33 is connected to the second eccentric wheel 32 and can drive the second eccentric wheel 32 to rotate. The first valve seat 11 and the second valve seat 12 are respectively connected to a first valve core seat 13 and a second valve core seat 14. A first valve core 41 and a second valve core 42 are respectively installed in the first valve core seat 13 and the second valve core seat 14. A first valve rod 51 and a second valve rod 52 are respectively fixedly connected to the first guide block 21 and the second guide block 22. The first valve rod 51 extends into the first valve core seat 13 and is provided with a first valve core plug 43 that cooperates with the first valve core 41. The second valve rod 52 extends into the second valve core seat 14 and is provided with a second valve core plug 44 that cooperates with the second valve core 42. The first guide block 21 can drive the first valve core plug 43 to move through the first valve rod 51 and cooperate with the first valve core 41 to realize the opening and closing of the internal channel of the first valve core seat 13. The second guide block 22 can drive the second valve core plug 44 to move through the second valve rod 52 and cooperate with the second valve core 42 to realize the opening and closing of the internal channel of the second valve core seat 14.

[0027] Preferably, a first connector 15 and a second connector 16 are respectively arranged on the first valve core seat 13 and the second valve core seat 14. The first connector 15 and the second connector 16 respectively have a first outlet 151 and a second outlet 161. The first valve core seat 13 has a first inlet 131, and the second valve core seat 14 has a second inlet 141. The second inlet 141 communicates with the first inlet 131.

[0028] Preferably, the first valve core seat 13 has a connecting pipe 132 which communicates with the first inlet 131. The connecting pipe 132 communicates with the second inlet 141 and is fixedly connected by a second clamp 61. A sealing ring is arranged between the connecting pipe 132 and the second inlet 141.

[0029] Preferably, the first connector 15 is fixedly connected to the first valve core seat 13 by a third clamp 62, and the second connector 16 is fixedly connected to the second valve core seat 14 by a fourth clamp 63. Sealing rings are arranged between the first connector 15 and the first valve core seat 13 and between the second connector 16 and the second valve core seat 14. The first valve rod 51 extends into the first connector 15, and the first valve core plug 43 is located in the inner cavity of the first connector 15. The second valve rod 52 extends into the second connector 16, and the second valve core plug 44 is located in the inner cavity of the second connector 16.

[0030] Preferably, a first coupling 71 is arranged at the output end of the driving motor 9 and is connected to the first eccentric wheel 31 through the first coupling 71. The driving motor 9 is fixedly installed on the side of the first valve seat 11 and is fixedly connected to the first valve seat 11 by a first connecting clamp.

[0031] Preferably, a transfer shaft 35 is arranged at the output end of the first eccentric shaft 33. A second coupling 72 is arranged between the transfer shaft 35 and the second eccentric wheel 32. The first eccentric shaft 33 can drive the second eccentric wheel 32 to rotate through the transfer shaft 35 and the second coupling 72. A first scale 73 and a second scale 74 are arranged outside the second coupling 72. The pointer of the first scale 73 rotates synchronously with the first eccentric shaft 33, and the pointer of the second scale 74 rotates synchronously with the second eccentric wheel.

[0032] Preferably, a first guide sleeve 111 is arranged inside the first valve seat 11, and the first valve rod 51 is installed in the first guide sleeve 111. A second guide sleeve 121 is arranged inside the second valve seat 12, and the second valve rod 52 is installed in the second guide sleeve 121.

[0033] Preferably, the first eccentric wheel 31 includes a first eccentric wheel shaft portion and a first eccentric wheel disc. The first eccentric wheel shaft portion is rotatably installed inside the first valve seat 11, and the first eccentric shaft 33 is fixedly installed on the first eccentric wheel disc. The second eccentric wheel 32 includes a second eccentric wheel shaft portion and a second eccentric wheel disc. The second eccentric wheel shaft portion is rotatably installed inside the second valve seat 12, and the second eccentric shaft 34 is fixedly installed on the second eccentric wheel disc.

[0034] Preferably, the first valve stem 51 is fixedly connected to the upper part of the first guide block 21 by a first screw, and the second valve stem 52 is fixedly connected to the upper part of the second guide block 22 by a second screw. A first guide rod 53 is fixedly connected to the lower part of the first guide block 21 by a third screw. The first guide rod 53 extends outward from the bottom of the first valve seat 11 to the outside of the first valve seat 11. A through hole for mating with the first guide rod 53 is provided on the first valve seat 11. A second guide rod 54 is fixedly connected to the lower part of the second guide block 22 by a fourth screw. The second guide rod 54 extends outward from the bottom of the second valve seat 12 to the outside of the second valve seat 12. A through hole for mating with the second guide rod 54 is provided on the second valve seat 12.

[0035] Preferably, the first valve seat 11 and the first valve core seat 13 are fixedly connected by a fifth clamp, and the second valve seat 12 and the second valve core seat 14 are fixedly connected by a sixth clamp. Sealing rings are provided between the first valve seat 11 and the first valve core seat 13 and between the second valve seat 12 and the second valve core seat 14. The first valve seat 11 and the second valve seat 12 are fixedly connected by a seventh clamp. The first valve seat 11 has a first valve seat cavity inside, and the first guide block 21 is installed in the first valve seat cavity. The second valve seat 12 has a second valve seat cavity inside, and the second guide block 22 is installed in the second valve seat cavity.

[0036] When implementing the present invention specifically, the driving motor 9 drives the first eccentric wheel 31 to rotate. The first eccentric wheel 31 drives the first eccentric shaft 33 to move. The first eccentric shaft 33 drives the second eccentric wheel 32 to rotate through the transfer shaft 35, and the second eccentric wheel 32 drives the second eccentric shaft 34 to move.

[0037] During the movement of the first eccentric shaft 33, the first eccentric shaft 33 can drive the first guide block 21 to move up and down. The first guide block 21 drives the first valve stem 51 to move up and down. The first valve stem 51 drives the first valve core plug 43 to move up and down. The first valve core plug 43 cooperates with the first valve core 41 to open and close the internal channel of the first valve core seat 13. Similarly, during the movement of the second eccentric shaft 34, the second eccentric shaft 34 can drive the second guide block 22 to move up and down. The second guide block 22 drives the second valve stem 52 to move up and down. The second valve stem 52 drives the second valve core plug 44 to move up and down. The second valve core plug 44 cooperates with the second valve core 42 to open and close the internal channel of the second valve core seat 14.

[0038] The movement of two groups of servo valves can be achieved by one driving motor 9. When necessary, even three or more groups of valves can be connected in series and driven by the same motor, which can eliminate signal delay.

[0039] In this technical solution, the adapter shaft 35 and the second coupling 72 are used to achieve the series operation of two groups of valve mechanisms. The start and stop times are the same, and there will be no signal delay, which helps to improve the response speed, coating efficiency and coating quality.

[0040] The first scale 73 and the second scale 74 on the second coupling 72 are used to facilitate the observation of the angle difference between two groups of valve mechanisms. In actual application, the relative rotation angle between two groups of servo valve mechanisms can be adjusted as needed and then locked and connected.

[0041] By adjusting the relative rotation angle of the eccentric wheel mechanisms inside two groups of valve mechanisms, the position difference between two valve core plugs can be controlled. When the driving motor 9 works, the actions of the valve core plugs of the two servo valves are different, and thus can be flexibly adjusted according to process requirements.

[0042] The above is a specific description of the preferred embodiment of the present invention. However, the present invention is not limited to the described embodiment. Those skilled in the art can make various equivalent deformations or substitutions without departing from the spirit of the present invention. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A series-connected servo valve mechanism, characterized in that: It includes a drive motor (9), a first valve seat (11), and a second valve seat (12). A first guide block (21) and a first eccentric wheel (31) are installed inside the first valve seat (11). A second guide block (22) and a second eccentric wheel (32) are installed inside the second valve seat (12). A first eccentric shaft (33) is provided on the first eccentric wheel (31), and the first eccentric shaft (33) is movably connected to the first guide block (21) and can drive the first guide block (21) to reciprocate inside the first valve seat (11). A second eccentric shaft (34) is provided on the second eccentric wheel (32), and the second eccentric shaft (34) is movably connected to the second guide block (22) and can drive the second guide block (22) to reciprocate inside the second valve seat (12). The output end of the drive motor (9) is connected to the first eccentric wheel (31) and can drive the first eccentric wheel (31) to rotate. The first eccentric shaft (33) is connected to the second eccentric wheel (32) and can drive the second eccentric wheel (32) to rotate. The first valve seat (11) and the second valve seat (12) are respectively connected to a first valve core seat (13) and a second valve core seat (14). A first valve core (41) and a second valve core (42) are respectively installed inside the first valve core seat (13) and the second valve core seat (14). A first valve rod (51) and a second valve rod (52) are respectively fixedly connected to the first guide block (21) and the second guide block (22). The first valve rod (51) extends into the first valve core seat (13) and is installed with a first valve core plug (43) that cooperates with the first valve core (41). The second valve rod (52) extends into the second valve core seat (14) and is installed with a second valve core plug (44) that cooperates with the second valve core (42). The first guide block (21) can drive the first valve core plug (43) to move through the first valve rod (51) and cooperate with the first valve core (41) to realize the opening and closing of the internal passage of the first valve core seat (13). The second guide block (22) can drive the second valve core plug (44) to move through the second valve rod (52) and cooperate with the second valve core (42) to realize the opening and closing of the internal passage of the second valve core seat ().

2. The series servo valve mechanism according to claim 1, characterized in that: A first connector (15) and a second connector (16) are respectively provided on the first valve core seat (13) and the second valve core seat (14). A first outlet (151) and a second outlet (161) are respectively provided on the first connector (15) and the second connector (16). A first inlet (131) is provided on the first valve core seat (13). A second inlet (141) is provided on the second valve core seat (14). The second inlet (141) is communicated with the first inlet (131).

3. The series servo valve mechanism according to claim 2, characterized in that: The first valve core seat (13) has a connecting pipe (132). The connecting pipe (132) is communicated with the first inlet (131). The connecting pipe (132) is communicated with the second inlet (141) and is fixedly connected by a second clamp (61). A sealing ring is provided between the connecting pipe (132) and the second inlet (141).

4. A series servo valve mechanism according to claim 2, characterized in that: The first connector (15) is fixedly connected to the first valve core seat (13) through a third clamp (62), and the second connector (16) is fixedly connected to the second valve core seat (14) through a fourth clamp (63). Sealing rings are provided between the first connector (15) and the first valve core seat (13) and between the second connector (16) and the second valve core seat (14). The first valve stem (51) extends into the first connector (15), and the first valve core plug (43) is located in the inner cavity of the first connector (15). The second valve stem (52) extends into the second connector (16), and the second valve core plug (44) is located in the inner cavity of the second connector (16).

5. A series servo valve mechanism according to claim 1, characterized in that: A first coupling (71) is provided at the output end of the drive motor (9) and is connected to the first eccentric wheel (31) through the first coupling (71). The drive motor (9) is fixedly installed on the side of the first valve seat (11), and the drive motor (9) is fixedly connected to the first valve seat (11) through a first connecting clamp.

6. A series servo valve mechanism according to claim 1, characterized in that: A transfer shaft (35) is provided at the output end of the first eccentric shaft (33). A second coupling (72) is provided between the transfer shaft (35) and the second eccentric wheel (32). The first eccentric shaft (33) can drive the second eccentric wheel (32) to rotate through the transfer shaft (35) and the second coupling (72). A first scale (73) and a second scale (74) are provided outside the second coupling (72). The pointer of the first scale (73) rotates synchronously with the first eccentric shaft (33), and the pointer of the second scale (74) rotates synchronously with the second eccentric wheel (32).

7. A series servo valve mechanism according to claim 1, characterized in that: A first guide sleeve (111) is provided inside the first valve seat (11), and the first valve stem (51) is installed in the first guide sleeve (111). A second guide sleeve (121) is provided inside the second valve seat (12), and the second valve stem (52) is installed in the second guide sleeve (121).

8. A series servo valve mechanism according to claim 1, characterized in that: The first eccentric wheel (31) includes a first eccentric wheel shaft portion and a first eccentric wheel disc. The first eccentric wheel shaft portion is rotatably installed inside the first valve seat (11), and the first eccentric shaft (33) is fixedly installed on the first eccentric wheel disc. The second eccentric wheel (32) includes a second eccentric wheel shaft portion and a second eccentric wheel disc. The second eccentric wheel shaft portion is rotatably installed inside the second valve seat (12), and the second eccentric shaft (34) is fixedly installed on the second eccentric wheel disc.

9. A series servo valve mechanism according to claim 1, characterized in that: The first valve stem (51) is fixedly connected to the upper part of the first guide block (21) by a first screw. The second valve stem (52) is fixedly connected to the upper part of the second guide block (22) by a second screw. The lower part of the first guide block (21) is fixedly connected with a first guide rod (53) by a third screw. The first guide rod (53) extends outward from the bottom of the first valve seat (11) to the outside of the first valve seat (11). A through hole for mating with the first guide rod (53) is provided on the first valve seat (11). The lower part of the second guide block (22) is fixedly connected with a second guide rod (54) by a fourth screw. The second guide rod (54) extends outward from the bottom of the second valve seat (12) to the outside of the second valve seat (12). A through hole for mating with the second guide rod (54) is provided on the second valve seat (12).

10. A series servo valve mechanism according to claim 1, characterized in that: The first valve seat (11) and the first valve core seat (13) are fixedly connected by a fifth clamp. The second valve seat (12) and the second valve core seat (14) are fixedly connected by a sixth clamp. Sealing rings are provided between the first valve seat (11) and the first valve core seat (13) and between the second valve seat (12) and the second valve core seat (14). The first valve seat (11) and the second valve seat (12) are fixedly connected by a seventh clamp. The first valve seat (11) has a first valve seat cavity inside. The first guide block (21) is installed in the first valve seat cavity. The second valve seat (12) has a second valve seat cavity inside. The second guide block (22) is installed in the second valve seat cavity.

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