Coating valve

Abstract

The utility model belongs to the technical field of glue coating, and discloses a coating valve, which comprises a glue spraying assembly, a glue supply pipeline, a glue supply pipe, a glue outlet and a glue spraying head, the glue spraying assembly comprises a flow channel pipe and a glue spraying head, the flow channel pipe extends along the vertical direction, the upper end of the flow channel pipe is communicated with the glue supply pipeline, and the lower end of the flow channel pipe is provided with the glue outlet to be communicated with the glue spraying head; the glue spraying head is rotationally connected to the lower end of the flow channel pipe in the horizontal direction, an adapter is arranged on the glue spraying head, and the adapter is located on the outer side face, penetrated by a pitching rotation path of the glue spraying head, of the glue spraying head; the output end of the first adjusting mechanism is in transmission connection with the adapter, and the first adjusting mechanism can drive the glue spraying head to rotate in the horizontal direction; the output end of the second adjusting mechanism is in transmission connection with the flow channel pipe, and the second adjusting mechanism can drive the flow channel pipe to rotate around the axis of the flow channel pipe. According to the coating valve provided by the utility model, the space occupation of the coating valve in the horizontal direction can be reduced, and the risk that the coating valve interferes with and collides with other objects during operation is reduced.

Description

Technical Field

[0001] This utility model relates to the field of adhesive coating technology, and in particular to a coating valve. Background Technology

[0002] Coating is a complex process technology that involves attaching one or more layers of materials with specific functions to the surface of a substrate in order to improve the surface properties of the substrate and enhance the value of the product.

[0003] The coating valve typically has a valve stem inside its body. Moving the valve stem opens or closes the adhesive nozzle on the valve body, and the opening degree of the nozzle is controlled by the travel of the valve stem. During coating operations, the orientation of the nozzle needs to be adjusted, including its pitch angle and horizontal orientation, to improve the accessibility and versatility of the coating valve. Currently used orientation adjustment mechanisms require a rotating connection structure at the nozzle, which occupies a large space and poses a high risk of interference or collision with other objects during operation.

[0004] Therefore, there is an urgent need for a coating valve to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a coating valve that reduces the space occupied by the coating valve in the horizontal direction and reduces the risk of interference or collision between the coating valve and other objects during operation.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A coating valve is provided, comprising:

[0008] A glue spraying assembly includes a flow channel tube and a glue spraying head. The flow channel tube extends vertically and its upper end is connected to a glue supply line. The lower end of the flow channel tube is provided with a glue outlet to connect to the glue spraying head. The glue spraying head is rotatably connected to the lower end of the flow channel tube in a horizontal direction. The glue spraying head is provided with an adapter seat located on the outer side of the glue spraying head that is traversed by its pitch and rotation path.

[0009] The first adjustment mechanism has its output end connected to the adapter seat, and the first adjustment mechanism can drive the spray head to rotate around the horizontal direction.

[0010] The second adjustment mechanism has its output end connected to the flow channel tube via a drive, and the second adjustment mechanism can drive the flow channel tube to rotate around its axis.

[0011] Preferably, the adapter and the glue spray head are integrally formed.

[0012] Preferably, the first adjustment mechanism includes a first power component, a sliding rotating block, and a connecting rod. The sliding rotating block is sleeved on the flow channel tube. The first power component is driven to the sliding rotating block to drive the sliding rotating block to slide along the flow channel tube. One end of the connecting rod is rotatably connected to the sliding rotating block, and the other end is rotatably connected to the adapter seat.

[0013] Preferably, a hinge seat is integrally formed on the sliding rotating block, and one end of the connecting rod is rotatably connected to the hinge seat via a first rotating shaft; and / or

[0014] The other end of the connecting rod is rotatably connected to the adapter via a second rotating shaft.

[0015] Preferably, the first adjustment mechanism further includes a lever, and the sliding rotating block is provided with an annular groove extending along its periphery. One end of the lever is connected to the output end of the first power component, and the other end of the lever is provided with a shift fork, which is inserted into the annular groove.

[0016] Preferably, one of the sliding rotating block and the flow channel tube is provided with a guide groove, and the other is provided with a guide pin. The guide groove extends in the same direction as the flow channel tube, and the guide pin is inserted into the guide groove.

[0017] Preferably, the first power component includes:

[0018] First rotary drive component;

[0019] The transmission nut is connected to the output end of the first rotary drive component;

[0020] The transmission screw extends in the same direction as the flow channel pipe, the transmission nut is threadedly connected to the transmission screw, and the transmission screw is connected to the sliding rotating block.

[0021] Preferably, the second adjustment mechanism includes a second rotary drive and a belt drive assembly. The belt drive assembly includes a first synchronous pulley, a second synchronous pulley, and a synchronous belt. The first synchronous pulley is connected to the output end of the second rotary drive, the second synchronous pulley is fixed to the flow channel pipe, and the synchronous belt is fitted onto the first synchronous pulley and the second synchronous pulley.

[0022] Preferably, the lower end of the flow channel is sealed with an adapter, the glue outlet is opened on the adapter, the adapter is rotatably connected to the glue spray head through an adapter pin, the adapter is provided with a first flow channel, the adapter pin is provided with a second flow channel, and the glue outlet and the glue spray head are connected sequentially through the first flow channel and the second flow channel.

[0023] Preferably, the coating valve further includes a valve body assembly, which includes a linear motor and a valve stem. The valve stem passes through the flow channel tube, and the upper end of the valve stem is connected to the output end of the linear motor. The lower end of the valve stem is provided with a tapered portion. The linear motor can drive the valve stem to slide along the flow channel tube to adjust the opening and closing size of the glue outlet, and the tapered portion can selectively block the glue outlet.

[0024] The beneficial effects of this utility model are:

[0025] The coating valve provided by this utility model has a spray nozzle rotatably connected to a flow channel tube in a horizontal direction. A first adjustment mechanism acts on the spray nozzle, driving it to rotate horizontally to adjust the pitch of the spray direction. A second adjustment mechanism acts on the flow channel tube, driving both the flow channel tube and the spray nozzle to rotate together around the central axis of the flow channel tube to adjust the horizontal direction of the spray direction. The spray nozzle is connected to the output end of the first adjustment mechanism via an adapter seat located on the outer side of the spray nozzle traversed by its pitch and rotation path. This reduces the horizontal space occupied by the coating valve and lowers the risk of interference or collision between the coating valve and other objects during operation. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the coating valve provided by this utility model. Figure 1 ;

[0027] Figure 2 yes Figure 1 Enlarged schematic diagram of region A in the middle;

[0028] Figure 3 This is a schematic diagram of the structure of the coating valve provided by this utility model. Figure 2 ;

[0029] Figure 4 This is a partial structural cross-section of the coating valve provided by this utility model. Figure 1 ;

[0030] Figure 5 This is a partial structural cross-section of the coating valve provided by this utility model. Figure 2 ;

[0031] Figure 6 This is a schematic diagram of the internal structure of the adapter provided by this utility model;

[0032] Figure 7 This is a schematic diagram of the internal structure of the adapter pin provided by this utility model.

[0033] In the picture:

[0034] 10. Flow channel tube; 11. Glue outlet; 12. Guide groove; 20. Glue spray head; 21. Adapter seat; 30. Adapter; 31. First flow channel; 311. First horizontal section; 312. First vertical section; 32. Connecting hole; 40. Adapter pin; 41. Second flow channel; 411. Second horizontal section; 412. Second vertical section; 50. Guide pin;

[0035] 110. First rotary drive component; 120. Transmission screw; 130. Sliding rotating block; 131. Circular groove; 132. Hinge seat; 140. Connecting rod; 141. First rotating shaft; 142. Second rotating shaft; 150. Lever;

[0036] 210. Second rotary drive component; 221. First synchronous pulley; 222. Second synchronous pulley; 223. Synchronous belt; 224. Tensioner pulley;

[0037] 310. Linear motor; 320. Valve stem; 321. Tapered section;

[0038] 400. High-speed solenoid valve. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0040] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0043] This embodiment provides a coating valve for coating adhesives onto the surface of a substrate, particularly suitable for coating adhesives onto thin film substrates. Please refer to... Figures 1-7 The coating valve includes a glue spraying assembly, a first adjusting mechanism, a second adjusting mechanism, a valve body assembly, and a high-speed solenoid valve 400. The glue spraying assembly includes a flow channel 10 and a glue spraying head 20. The flow channel 10 extends vertically and its upper end is connected to the glue supply line. The lower end of the flow channel 10 is provided with a glue outlet 11 to connect to the glue spraying head 20. The glue spraying head 20 is rotatably connected to the lower end of the flow channel 10 in a horizontal direction. The first adjusting mechanism and the second adjusting mechanism are used to drive the glue spraying head 20 to rotate around the horizontal axis and around the vertical axis, respectively. The output end of the valve body assembly is extended and retracted through the flow channel 10 to adjust the opening and closing degree of the glue outlet 11. The high-speed solenoid valve 400 is used to control the on / off state of the glue supply line.

[0044] For further details, please refer to Figures 1-7 The spray nozzle 20 is provided with an adapter 21, which is located on the outer side of the spray nozzle 20 through which its pitch and rotation path passes. The output end of the first adjustment mechanism is connected to the adapter 21, and the first adjustment mechanism can adjust the pitch angle of the spray nozzle 20. The output end of the second adjustment mechanism is connected to the flow channel tube 10, and the second adjustment mechanism can drive the flow channel tube 10 to rotate around its vertical central axis.

[0045] Specifically, the coating valve provided in this embodiment controls the opening and closing degree of the glue outlet 11 through the valve body assembly to adjust and control the glue dispensing amount. It also controls the on / off of the glue supply end through the high-speed solenoid valve 400. The glue spray head 20 is rotatably connected to the flow channel tube 10 in the horizontal direction. The first adjustment mechanism acts on the glue spray head 20 and can drive the glue spray head 20 to rotate in the horizontal direction to realize the pitch adjustment of the glue spraying direction. The second adjustment mechanism acts on the flow channel tube 10 and can drive the flow channel tube 10 and the glue spray head 20 to rotate together around the central axis of the flow channel tube 10 to realize the horizontal adjustment of the glue spraying direction. The glue spray head 20 can rotate in multiple directions, and the freedom and accessibility of the direction and angle adjustment are high.

[0046] The spray nozzle 20 is connected to the output end of the first adjustment mechanism via an adapter 21. The adapter 21 is located on the outer side of the spray nozzle 20 through which its pitch and rotation path passes. Compared to the conventional arrangement of placing the adapter 21 on the rotation axis of the spray nozzle 20, the torque required to drive the spray nozzle 20 to rotate is smaller, and the adapter 21 does not need to be penetrated by the rotation axis. That is, the adapter 21 does not need to be located at the end of the spray nozzle 20 through which its rotation axis passes. The adapter 21 can be located on the side of the rotation axis. Since the position of the adapter 21 is in the area that the spray nozzle 20 needs to pass through when pitching, the adapter 21 does not occupy additional space. As a result, the coating valve occupies less space in the horizontal direction, reducing the risk of interference or collision between the coating valve and other objects during operation.

[0047] For example, the adapter 21 and the glue spray head 20 are integrally formed, which simplifies the production process and reduces manufacturing costs.

[0048] For example, please refer to Figures 1-5 The first adjustment mechanism includes a first power component, a sliding rotating block 130, and a connecting rod 140. The sliding rotating block 130 is sleeved on the flow channel tube 10. The first power component is driven to drive the sliding rotating block 130 to slide along the flow channel tube 10. One end of the connecting rod 140 is rotatably connected to the sliding rotating block 130, and the other end is rotatably connected to the adapter seat 21. It can be seen that the flow channel tube 10, the sliding rotating block 130, the connecting rod 140, and the spray head 20 constitute a four-bar linkage. The output end of the first power component can extend and retract vertically, thereby causing the sliding rotating block 130 to slide relative to the flow channel tube 10, which in turn causes the connecting rod 140 to rotate while sliding. The spray head 20 then tilts and rotates around the horizontal axis, and the tilt adjustment of the spray head 20 is stable and controllable.

[0049] For example, please refer to Figures 1-5 The first power assembly includes a first rotary drive 110, a transmission nut, and a transmission screw 120. The first rotary drive 110 is a rotary servo motor, with its output end vertically aligned and connected to the transmission nut. The transmission screw 120 extends in the same direction as the flow channel pipe 10. The transmission nut is threaded onto the transmission screw 120, which is connected to the sliding rotating block 130. The power combination of the rotary servo motor, transmission nut, and transmission screw 120 can output stable and high-precision linear power. The use of a rotary servo motor in the first rotary drive 110 allows for a more compact and aesthetically pleasing overall layout of the coated valve.

[0050] Of course, in other embodiments of this utility model, the first rotary drive 110 may also be a rotary motor or other drive element that can output rotary power, and the first power assembly may also be a linear electric actuator or other drive element that can output linear power.

[0051] For example, please refer to Figures 1-5 The first adjustment mechanism also includes a lever 150, and the transmission screw 120 is connected to the sliding rotating block 130 via the lever 150. Specifically, the sliding rotating block 130 is provided with an annular groove 131 extending along its circumference. One end of the lever 150 is connected to the output end of the first power component, and the other end of the lever 150 is provided with a fork portion, which is inserted into the annular groove 131. When the second adjustment mechanism drives the flow channel pipe 10 to rotate around the vertical axis, the sliding rotating block 130 rotates synchronously. The annular groove 131 allows the lever 150 to remain in its original position while preventing the lever 150 from disengaging from the sliding rotating block 130, thus providing good compatibility.

[0052] For example, the fork portion is provided with a concave arc surface on the side facing the sliding rotating block 130. The arc surface is adapted to the inner wall of the annular groove 131. The lever 150 can abut against the inner wall of the annular groove 131 through the arc surface, thereby improving the stability of the assembly and the smoothness of the flow channel tube 10 rotating around the vertical axis.

[0053] Specifically, please refer to Figures 1-5 A hinge seat 132 is integrally formed on the sliding rotating block 130. The hinge seat 132 is located at the lower end of the sliding rotating block 130. One end of the connecting rod 140 is rotatably connected to the hinge seat 132 via a first rotating shaft 141 about a horizontal axis, and the other end of the connecting rod 140 is rotatably connected to the adapter seat 21 via a second rotating shaft 142 about a horizontal axis. The integral forming of the hinge seat 132 and the sliding rotating block 130 can reduce production costs. The first rotating shaft 141 and the second rotating shaft 142 can be quickly installed via spring clips, resulting in high assembly efficiency and easy replacement. The hinge seat 132 on the sliding rotating block 130 and the adapter seat 21 of the spray nozzle 20 are located on the same side of the flow channel tube 10. The pitch adjustment range of the spray nozzle 20 can reach 0° to 90°, that is, the pitch orientation of the spray nozzle 20 can be steplessly adjusted between vertically downward and horizontally.

[0054] For example, a guide groove 12 is provided on one of the sliding rotating block 130 and the flow channel tube 10, and a guide pin 50 is provided on the other. The guide groove 12 is a long groove-shaped structure, extending in the same direction as the flow channel tube 10, and the guide pin 50 is inserted into the guide groove 12. In this embodiment, please refer to... Figure 4 The outer wall of the flow channel 10 is provided with a guide groove 12, and the sliding rotating block 130 is provided with a mounting hole. The guide pin 50 is installed through the mounting hole, with one end extending into the guide groove 12. The width of the guide groove 12 is equal to the outer diameter of the guide pin 50, thereby restricting the relative rotation of the sliding rotating block 130 and ensuring good structural stability.

[0055] For example, please refer to Figure 1 and Figure 3The second adjustment mechanism includes a second rotary drive component 210 and a belt drive assembly. The belt drive assembly includes a first synchronous pulley 221, a second synchronous pulley 222, and a synchronous belt 223. The first synchronous pulley 221 is connected to the output end of the second rotary drive component 210, the second synchronous pulley 222 is fixedly sleeved on the outer wall of the flow channel tube 10, and the synchronous belt 223 is tightly sleeved on the first synchronous pulley 221 and the second synchronous pulley 222. Using a belt drive assembly as the transmission structure ensures accurate and stable transmission, high transmission efficiency, and convenient adjustment. During operation, the second rotary drive component 210 drives the first synchronous pulley 221 to rotate, and the rotational power is transferred to the flow channel tube 10 via the synchronous belt 223 and the second synchronous pulley 222, causing the flow channel tube 10 and the spray nozzle 20 to rotate around the vertical axis. The rotation angle range is 0 to 360°, meaning the horizontal orientation of the spray nozzle 20 can be steplessly adjusted within a 360° range.

[0056] For example, the second rotary drive 210 adopts a rotary servo motor, please refer to Figure 1 and Figure 3 The first rotary drive 110 and the second rotary drive 210 are arranged side by side on one side of the valve body assembly, and the high-speed solenoid valve 400 is arranged side by side on the other side of the valve body assembly opposite to it. The overall layout of the coated valve is compact and beautiful.

[0057] Of course, in other embodiments of this utility model, the second rotary drive 210 may also be a rotary motor or other drive element that can output rotational power.

[0058] For example, please refer to Figure 3 The belt drive assembly also includes a tension pulley 224, which is rotatably mounted on the body of the first rotary drive 110 or the second rotary drive 210. The tension pulley 224 presses against the outer side of the synchronous belt 223 to keep the synchronous belt 223 in a taut state and improve transmission stability.

[0059] For example, please refer to Figure 2 , Figures 4-7An adapter 30 is inserted into the lower end of the flow channel tube 10. The adapter 30 and the flow channel tube 10 are statically sealed by a sealing ring, which has high sealing reliability. The glue outlet 11 is opened on the adapter 30. The adapter 30 is rotatably connected to the glue spray head 20 through the adapter pin 40. The adapter 30 is provided with a first flow channel 31, and the adapter pin 40 is provided with a second flow channel 41. The glue outlet 11 and the glue spray head 20 are connected in sequence through the first flow channel 31 and the second flow channel 41. Specifically, the adapter 30 is provided with a connecting hole 32 for the adapter pin 40. The first flow channel 31 includes a first horizontal section 311 and a first vertical section 312 connected together. The first horizontal section 311 communicates with the glue outlet 11, and the first vertical section 312 extends through the inner wall of the connecting hole 32. The second flow channel 41 includes a second horizontal section 411 and a second vertical section 412 connected together. The second horizontal section 411 communicates with the first vertical section 312, and the second vertical section 412 communicates with the glue inlet end of the spray head 20. This embodiment is based on the hinged structure between the spray head 20 and the flow channel tube 10 to set up the glue flow channel. No matter how the flow channel tube 10 and the spray head 20 rotate, the glue flow channel remains unobstructed, with high compatibility and outstanding reliability.

[0060] For example, please refer to Figure 1 , Figures 3-5 The valve body assembly includes a linear motor 310 and a valve stem 320. The valve stem 320 passes through the flow channel tube 10, and its upper end is connected to the output end of the linear motor 310. A tapered portion 321 is provided at the lower end of the valve stem 320. The linear motor 310 can drive the valve stem 320 to slide along the flow channel tube 10 to adjust the opening and closing size of the dispensing port 11. The tapered portion 321 can selectively block the dispensing port 11. Specifically, the linear motor 310 is a linear servo motor, which can precisely control the length of the valve stem 320 extending into the dispensing port 11, thereby precisely controlling the opening and closing size of the dispensing port 11 and accurately adjusting the dispensing rate.

[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A coated valve comprising characterized in that, The application relates to a glue spraying assembly. The glue spraying assembly comprises a flow channel pipe (10) and a glue spraying head (20), the flow channel pipe (10) is arranged to extend along a vertical direction, the upper end of the flow channel pipe (10) is connected with a glue supply pipe, the lower end of the flow channel pipe (10) is provided with a glue outlet (11) to be connected with the glue spraying head (20), the glue spraying head (20) is rotatably connected to the lower end of the flow channel pipe (10) along a horizontal direction, the glue spraying head (20) is provided with an adapter seat (21), and the adapter seat (21) is located on the outer side of the glue spraying head (20) and passes through the pitch-rotation path of the glue spraying head (20); a first adjusting mechanism, the output end of which is in transmission connection with the adapter seat (21), and the first adjusting mechanism can drive the glue spraying head (20) to rotate along the horizontal direction; a second adjusting mechanism, the output end of which is in transmission connection with the flow channel pipe (10), and the second adjusting mechanism can drive the flow channel pipe (10) to rotate around the axis thereof.

2. The coated valve of claim 1, wherein, The adapter seat (21) is integrally formed with the glue spraying head (20).

3. The coated valve of claim 1, wherein, The first adjusting mechanism comprises a first power assembly, a sliding rotary block (130) and a connecting rod (140), the sliding rotary block (130) is sleeved on the flow channel pipe (10), the first power assembly is in transmission connection with the sliding rotary block (130) to drive the sliding rotary block (130) to slide along the flow channel pipe (10), one end of the connecting rod (140) is in rotation connection with the sliding rotary block (130), and the other end of the connecting rod (140) is in rotation connection with the adapter seat (21).

4. The coated valve of claim 3, wherein, The sliding rotary block (130) is integrally formed with a hinged seat (132), one end of the connecting rod (140) is in rotation connection with the hinged seat (132) through a first rotation shaft (141); and / or the other end of the connecting rod (140) is in rotation connection with the adapter seat (21) through a second rotation shaft (142).

5. The coated valve of claim 3, wherein, The first adjusting mechanism further comprises a shifting rod (150), the sliding rotary block (130) is provided with a circular groove (131) extending along the peripheral portion thereof, one end of the shifting rod (150) is connected with the output end of the first power assembly, the other end of the shifting rod (150) is provided with a shifting fork part, and the shifting fork part is inserted into the circular groove (131).

6. The coated valve of claim 3, wherein, The sliding rotary block (130) and the flow channel pipe (10) are provided with a guide groove (12) and a guide pin (50) respectively, the guide groove (12) extends along the same direction as the flow channel pipe (10), and the guide pin (50) is inserted into the guide groove (12).

7. The coated valve of claim 3, wherein, The first power assembly comprises: a first rotary driving member (110); a transmission nut connected with the output end of the first rotary driving member (110); a transmission screw rod (120) arranged to extend along the same direction as the flow channel pipe (10), the transmission nut is in threaded connection with the transmission screw rod (120), and the transmission screw rod (120) is connected with the sliding rotary block (130).

8. The coated valve according to any one of claims 1-7, wherein, The second adjusting mechanism comprises a second rotary driving member (210) and a belt transmission assembly, the belt transmission assembly comprises a first synchronous pulley (221), a second synchronous pulley (222) and a synchronous belt (223), the first synchronous pulley (221) is connected to the output end of the second rotary driving member (210), the second synchronous pulley (222) is fixed to the flow channel pipe (10), and the synchronous belt (223) is sleeved on the first synchronous pulley (221) and the second synchronous pulley (222).

9. The coated valve according to any one of claims 1-7, wherein, The lower end of the flow channel pipe (10) is sealingly provided with an adapter (30), the glue outlet (11) is arranged on the adapter (30), the adapter (30) is rotationally connected with the glue spraying head (20) through an adapter pin shaft (40), the adapter (30) is provided with a first flow channel (31), the adapter pin shaft (40) is provided with a second flow channel (41), and the glue outlet (11) and the glue spraying head (20) are sequentially communicated through the first flow channel (31) and the second flow channel (41).

10. The coated valve according to any one of claims 1-7, wherein, The coating valve further comprises a valve body assembly, the valve body assembly comprises a linear motor (310) and a valve rod (320), the valve rod (320) is arranged in the flow channel pipe (10), the upper end of the valve rod (320) is connected with the output end of the linear motor (310), the lower end of the valve rod (320) is provided with a tapered portion (321), the linear motor (310) can drive the valve rod (320) to slide along the flow channel pipe (10) to adjust the opening and closing size of the glue outlet (11), and the tapered portion (321) can selectively block the glue outlet (11).

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