Point oil coating mechanism for water mixing valve O-ring nest assembly

Abstract

The utility model relates to a kind of water mixing valve O ring nest is equipped with oiling coating mechanism, including rotary coating mechanism, rotary coating mechanism side is provided with rack, and two groups of oiling mechanism are arranged on rack in parallel;The rotary coating mechanism includes carousel, and multiple groups of jig groups are circularly arrayed on carousel along its circumferential direction, each jig group includes two juxtaposition set carriers, and two the carrier set in parallel is respectively provided with water mixing nut jig and water mixing screw jig;The center of carousel bottom is provided with the indexing mechanism capable of driving its horizontal rotation, and two groups of jacking clutch mechanism are arranged between indexing mechanism and rack.This water mixing valve O ring nest is equipped with oiling coating mechanism, and the automatic coating of lubricating oil on water mixing nut and water mixing screw can be realized by oiling mechanism, the coating efficiency of lubricating oil on water mixing nut and water mixing screw is improved, to facilitate subsequent O ring assembly, save manpower, reduce production cost, improve production processing efficiency.

Description

Technical Field

[0001] This utility model relates to the processing of mixing valves, and more particularly to an oil coating mechanism for the O-ring assembly of a mixing valve. Background Technology

[0002] A mixing valve is a valve used to mix hot and cold water. This valve connects both cold and hot water pipes, allowing for mixing through adjustment. The mixing screw and mixing nut are crucial components of the mixing valve. The mixing screw is inserted into the center hole of the mixing nut, and its lower end is riveted to the hexagonal nut. To ensure a tight seal after the mixing screw is inserted into the center hole of the mixing nut and after the mixing nut is installed in the valve body, O-rings are fitted onto the upper part of the mixing screw and the outside of the mixing nut.

[0003] Currently, in the assembly process of mixing valves, the O-rings on the mixing screw and mixing nut are assembled manually. To ensure smooth installation, a layer of lubricating oil is applied to the outside of the mixing nut and mixing screw before assembly. Then, the O-ring is opened to a certain size and placed on the outside of the mixing nut and mixing screw, and then slid into the corresponding sealing insert along the outside of the mixing nut and mixing screw. This method of assembling O-rings for mixing valves relies on manual operation, is labor-intensive, has high processing costs, and is inefficient, affecting product production capacity. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a lubrication application mechanism for the O-ring of a mixing valve that can automatically apply lubricating oil to the mixing nut and mixing screw to facilitate O-ring connection.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] A dispensing and coating mechanism for an O-ring assembly of a mixing valve includes a rotary coating mechanism for placing the mixing nut and the mixing screw of the mixing valve. A frame is provided on one side of the rotary coating mechanism, and two sets of dispensing mechanisms capable of spraying oil onto the mixing nut and the mixing screw are arranged side-by-side on the frame. The rotary coating mechanism includes a horizontally arranged turntable with multiple sets of fixtures arranged in a circular array along its circumference. Each fixture set includes two parallel carriers, each carrier having a fixture for placing the mixing nut and a fixture for placing the mixing screw. A dividing mechanism capable of driving its horizontal rotation is set at the center of the bottom of the turntable. A lifting clutch mechanism is set between the dividing mechanism and the frame. There are two sets of lifting clutch mechanisms. The distance between the two sets of lifting clutch mechanisms is the same as the distance between two adjacent carriers in the fixture group, and the movement trajectory of the carrier passes directly above the lifting clutch mechanism. The oiling mechanism consists of an adjusting seat, an oiling cylinder, and an oiling pen. The adjusting seat is set on the top of the frame. The oiling cylinder is fixedly installed on the front of the adjusting seat. The oiling pen is movably connected to the oiling cylinder, and the oiling cylinder can drive the oiling pen to move relative to the turntable.

[0007] Furthermore, the carrier includes a connecting seat and a clutch-type driven plate disposed below the connecting seat; the connecting seat is fixed to the turntable by screws, and its top center passes through the upper and lower ends of the turntable; the mixing nut fixture and the mixing screw fixture are respectively shaft-connected to two independent carriers, and the lower ends of the mixing nut fixture and the mixing screw fixture are respectively fixedly connected to the clutch-type driven plates below the bottom of the two independent carriers; the lifting clutch mechanism includes a base, on which a lifting cylinder with a piston rod that can move up and down is disposed, and a connecting block fixedly connected to the top of the piston rod of the lifting cylinder is disposed, and a coating motor fixedly connected to the bottom of the connecting block is disposed, and a clutch-type driving plate that is drivenly connected to the coating motor is disposed on the top, and the clutch-type driven plate can pass directly above the clutch-type driving plate.

[0008] Furthermore, the adjustment seat is movably mounted on the top of the frame via a fine-tuning slide.

[0009] Furthermore, the oil-dispensing pen is movably connected to the oil-dispensing cylinder via a boom, and the boom is provided with an arc-shaped adjustment groove, in which the oil-dispensing pen is fixedly installed by bolts.

[0010] Furthermore, the spacing between the two adjacent sets of fixtures is the same as the spacing between the two sets of oiling mechanisms; the oil nozzles of the two sets of oiling pens correspond to the upper parts of the adjacent mixing nut fixture and mixing screw fixture in the two adjacent sets of fixtures, respectively.

[0011] Furthermore, the indexing mechanism consists of a stepper motor and a reducer; the reducer shaft is connected to the bottom center of the turntable, and the stepper motor is driven by the reducer.

[0012] Furthermore, an oil spraying baffle device is provided on the frame below the oiling mechanism; the oil spraying baffle device consists of a baffle cylinder, a baffle plate, and baffles. The back center of the baffle plate is fixedly connected to the piston rod end of the baffle cylinder, and its front corresponds to the turntable. The bottom height of the baffle plate is higher than the top height of the turntable. There are two baffles, which are vertically arranged on the front of the baffle plate near both ends. The distance between the two baffles is not less than the distance between the two sets of fixtures.

[0013] Furthermore, the turntable is provided with an oil baffle plate that corresponds to the inner side of the fixture assembly.

[0014] Compared with the prior art, the advantages of this utility model are: this mixing valve O-ring set oil application mechanism can automatically apply lubricating oil to the mixing nut and mixing screw mounted on the mixing nut fixture and mixing screw fixture on the turntable through two sets of oil application mechanisms. The turntable can rotate stepwise by a stepper motor, which facilitates the stepwise movement of the mixing nut and mixing screw placed on the turntable, making it easier to continuously apply lubricating oil, improving the lubricating oil application efficiency on the mixing nut and mixing screw, thereby facilitating the subsequent assembly of the O-ring, saving manpower, reducing production costs, and improving production efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of an oil coating mechanism for an O-ring assembly of a mixing valve according to the present invention;

[0017] Figure 2 This is a schematic diagram of the top structure of the rotary coating mechanism in the oil coating mechanism for the O-ring assembly of a mixing valve according to the present invention.

[0018] Figure 3 This is a schematic diagram of the bottom structure of the rotary coating mechanism in the dotted oil coating mechanism for the O-ring set of the mixing valve of the present invention;

[0019] Figure 4 This is a schematic diagram of the lifting clutch mechanism in the oil coating mechanism for the O-ring assembly of a mixing valve according to the present invention.

[0020] Figure 5 This is a schematic diagram of the assembly structure of the mixing nut fixture and connecting seat in the oil coating mechanism for the O-ring set of the mixing valve of the present invention.

[0021] Figure 6 This is a schematic diagram of the assembly structure of the mixing screw fixture and connecting seat in the oil coating mechanism for the O-ring of the mixing valve according to the present invention.

[0022] Figure 7 This invention relates to an oil coating mechanism for an O-ring assembly used in a mixing valve.

[0023] Figure 8 This is a front view of the oiling mechanism in the oiling coating mechanism for the O-ring assembly of a mixing valve according to the present invention.

[0024] Figure 9 This is a schematic diagram of the back structure of the oiling mechanism in the oiling coating mechanism for the O-ring assembly of a mixing valve according to the present invention.

[0025] Figure 10 This is a schematic diagram of the oil spraying and blocking device in the oil coating mechanism of the O-ring set of the mixing valve of the present invention.

[0026] In the diagram: 1. Rotary coating mechanism; 11. Turntable; 12. Indexing mechanism; 121. Stepper motor; 122. Reducer; 13. Lifting clutch mechanism; 131. Base; 132. Lifting cylinder; 133. Connecting block; 134. Coating motor; 135. Clutch-type drive disc; 14. Carrier; 141. Connecting seat; 142. Clutch-type driven disc; 143. Mixing nut fixture; 144. Mixing screw fixture; 15. Oil baffle; 2. Frame; 3. Oil dispensing mechanism; 31. Adjusting seat; 32. Oil dispensing cylinder; 33. Boom; 34. Oil dispensing pen; 35. Fine-tuning slide; 4. Oil spraying baffle device; 41. Baffle cylinder; 42. Baffle plate; 43. Baffle plate. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the description of the embodiments of the present invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships commonly used when the product of the present invention is in use, they are only for the convenience of describing the present invention and simplifying the description, 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, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0029] Furthermore, the use of terms such as "horizontal" or "vertical" does not imply that the component must be absolutely horizontal or vertical, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure or component must be completely horizontal, but can be slightly tilted.

[0030] In the description of the embodiments of this utility model, "a plurality of" means at least two.

[0031] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Example

[0033] Please refer to the instruction manual attached. Figure 1 As shown, the instruction manual is attached. Figure 1The diagram shows a specific embodiment of the oil application mechanism for an O-ring assembly of a mixing valve according to this utility model. It is used to apply lubricating oil to the external parts of the mixing nut and mixing screw in the mixing valve, facilitating the smooth assembly of the O-ring. The oil application mechanism for the O-ring assembly of the mixing valve includes a rotating application mechanism 1 for placing the mixing nut and mixing screw of the mixing valve. (See attached specification). Figures 1 to 3 As shown, the rotary coating mechanism 1 includes a horizontally arranged turntable 11 with a circular structure. Multiple sets of fixtures are arranged in a circular array along the circumference of the top of the turntable 11 near its outer edge. Each set of fixtures includes two parallel carriers 14. The two parallel carriers 14 are respectively equipped with a mixing nut fixture 143 for placing the mixing nut of the mixing valve and a mixing screw fixture 144 for placing the mixing screw. (See attached specification.) Figures 4 to 6 As shown, the carrier 14 includes a connecting seat 141 and a clutch-type driven plate 142 disposed below the connecting seat 141. The connecting seat 141 has an inverted T-shaped structure. To facilitate the installation of the connecting seat 141 on the turntable 11, the turntable 11 is provided with a vertically connected mounting hole. The connecting seat 141 is embedded in the mounting hole at the bottom of the turntable 11 and fixed to the turntable 11 with screws. The top center of the connecting seat 141 is provided with a vertically connected assembly hole. The assembly hole at the top center of the connecting seat 141 installed on the turntable 11 passes through the upper and lower ends of the turntable 11. The mixing nut fixture 143 and the mixing screw fixture 144 are respectively shaft-connected to... On two independent carriers 14, specifically, a mixing nut fixture 143 and a mixing screw fixture 144 are respectively nested in the assembly holes of two connecting seats 141. The mixing nut fixture 143 and the mixing screw fixture 144 slide in cooperation with the assembly holes in the corresponding connecting seats 141, and the lower ends of the mixing nut fixture 143 and the mixing screw fixture 144 are respectively fixedly connected to the clutch-type driven disk 142 below the bottom of the two independent carriers 14. When the clutch-type driven disk 142 rotates, it will drive the mixing nut fixture 143 or the mixing screw fixture 144 connected to it to rotate synchronously. The bottom center of the turntable 11 is provided with an indexing mechanism 12 that can drive its horizontal rotation. See the appendix of the specification. Figure 2 and 3 As shown, the indexing mechanism 12 consists of a stepper motor 121 and a reducer 122; the reducer 122 is shaft-connected to the bottom center of the turntable 11, and the stepper motor 121 is drively connected to the reducer 122. The stepper motor 121 can drive the turntable 11 to rotate intermittently through the reducer 122, facilitating the gradual movement of the mixing nut and mixing screw placed on the carrier 14 on top of the turntable 11; a frame 2 is provided on one side of the rotary coating mechanism 1; see the attached manual. Figure 1 and 7As shown, the frame 2 is equipped with two sets of oiling mechanisms 3 arranged side by side, which can respectively spray oil onto the mixing valve mixing nut and the mixing screw. (Refer to the appendix of the instruction manual.) Figure 1 As shown, the spacing between two adjacent sets of fixtures is the same as the spacing between the two sets of oiling mechanisms 3; refer to the appendix of the instruction manual. Figure 8 and 9 As shown, the oil dispensing mechanism 3 consists of an adjusting seat 31, an oil dispensing cylinder 32, and an oil dispensing pen 34. The adjusting seat 31 is located on the top of the frame 2. For convenient and precise adjustment of the horizontal position of the adjusting seat in the front-back and left-right directions, please refer to the appendix of the instruction manual. Figure 9 As shown, the adjusting seat 31 is movably mounted on the top of the frame 2 via a fine-tuning slide 35. The fine-tuning slide 35 is an XY-axis fine-tuning slide. The oil dispensing cylinder 32 is fixedly mounted on the front of the adjusting seat 31. In this embodiment, the oil dispensing cylinder 32 is obliquely fixed on the front of the adjusting seat 31. The oil dispensing pen 34 is movably connected to the oil dispensing cylinder 32. It should be noted that the oil dispensing pen 32 is connected to an external oil injection syringe via a pipeline, and the oil is delivered to the oil dispensing pen 34 connected to it through the oil injection syringe. It should also be noted that the oil dispensing cylinder 32 can drive the oil dispensing pen 34 to move relative to the turntable 11, making it easier for the oil dispensing pen 34 to move closer to and away from the turntable 11. See the appendix of the instruction manual. Figure 1 As shown, the nozzles of the two sets of oiling pens 34 correspond to the upper parts of the adjacent mixing nut fixture 143 and mixing screw fixture 144 in the two adjacent fixture sets. The mixing nut fixture 143 and mixing screw fixture 144 are fixture sets when the turntable 11 is stopped in the front direction of the corresponding frame 2. To facilitate vertical angle adjustment of the oiling pen 34 to accommodate mixing nuts and mixing screws of different heights and improve its versatility, please refer to the appendix to the instruction manual. Figure 8 and 9As shown, the oil-dispensing pen 34 is movably connected to the oil-dispensing cylinder 32 via a lifting arm 33. The lifting arm 33 is fixed to the slide of the oil-dispensing cylinder 32 by screws. The oil-dispensing cylinder 32 can drive the lifting arm 33 to move linearly in an oblique direction. To facilitate the adjustment of the angle of the oil-dispensing pen 34 on the lifting arm 33, an arc-shaped adjustment groove is provided on the lifting arm 33. The oil-dispensing pen 34 is fixedly installed in the arc-shaped adjustment groove by bolts. Specifically, the bolts are fixed to the oil-dispensing pen 34, pass through the arc-shaped adjustment groove, and are fixed to the lifting arm 33 by nuts. By tightening and loosening the nuts, the position of the oil-dispensing pen 34 in the arc-shaped adjustment groove can be adjusted, thereby realizing the vertical angle adjustment of the oil-dispensing pen 34, which facilitates the adjustment of the oil nozzle, the mixing nut fixture 143, and the mixing screw. The position between the mixing nut and the mixing screw on the fixture 144; in order to enable the mixing nut and the mixing screw that move to the oiling mechanism 3 to rotate, so that the oiling pen 34 can spray lubricating oil circumferentially onto the corresponding mixing nut and the mixing screw, a lifting clutch mechanism 13 is provided between the indexing mechanism 12 and the frame 2. The lifting clutch mechanism 13 has two sets, and the distance between the two sets of lifting clutch mechanisms 13 is the same as the distance between two adjacent carriers 14 in the fixture group. The movement trajectory of the carrier 14 passes directly above the lifting clutch mechanism 13, and the clutch-type driven plate 142 at the lower end of the mixing nut fixture 143 and the mixing screw fixture 144, which are stopped on the front of the frame 2, corresponds vertically to the two sets of lifting mechanisms 13; see the attached instruction manual. Figure 4 As shown, the lifting clutch mechanism 13 includes a base 131, on which a lifting cylinder 132 with a piston rod capable of vertical movement is mounted. The lifting cylinder 132 is fixedly mounted on the base 131 by screws. A connecting block 133 is fixedly connected to the top of the piston rod of the lifting cylinder 132. The connecting block 133 is horizontally positioned, with a coating motor 134 fixedly connected to its bottom and a clutch-type driving disc 135 driven by the coating motor 134 at its top. The clutch-type driven disc 142 can pass directly above the clutch-type driving disc 135. It should be noted that the lifting cylinder 132... The connecting block 133 can drive the coating motor 134 to move up and down, and at the same time drive the clutch-type active disk 135 to move upward synchronously. After the clutch-type active disk 135 rises, it can cooperate with the clutch-type driven disk 142 that stops above it. When the coating motor 134 rotates, it drives the clutch-type active disk 135 to rotate, which in turn drives the clutch-type driven disk 142 connected to it to rotate synchronously. The clutch-type driven disk 142 drives the mixing nut fixture 143 or the mixing screw fixture 144 connected to it to rotate synchronously. Correspondingly, the mixing nut fixture 143 and the mixing screw fixture 144 drive the mixing nut and the mixing screw embedded on their respective tops to rotate synchronously.

[0034] To avoid splattering of the oil during spraying, please refer to the instruction manual. Figure 7 As shown, an oil spraying baffle device 4 is provided on the frame 2 below the oiling mechanism 3; specifically, refer to the appendix of the instruction manual. Figure 10 As shown, the oil injection baffle device 4 consists of a baffle cylinder 41, a baffle plate 42, and a baffle 43. The baffle cylinder 41 is fixed on the frame 2 and located directly below the oil injection mechanism 3. The back center of the baffle plate 42 is fixedly connected to the piston rod end of the baffle cylinder 41, and its front corresponds to the turntable 11. The baffle cylinder 41 can drive the baffle plate 42 to move back and forth. It should be noted that the bottom height of the baffle plate 42 is higher than the top height of the turntable 11 to avoid interference between the baffle plate 42 and the turntable 11 when the baffle plate 42 moves forward. The baffle plate 43 has two pieces, which are vertically arranged on the front of the baffle plate 42 near both ends. In this embodiment, the distance between the two baffle plates 43 is not less than the distance between the two sets of fixtures. When the baffle cylinder 41 drives the baffle plate 42 to move forward, the two baffle plates 43 are respectively located in front of the two carriers 14 that stop on the front of the frame 2. At this time, they correspond to the oil spray nozzles of the oiling pen 34. The mixing nut and mixing screw assembled on the two sets of carriers 14 are respectively located between the corresponding oil spray nozzles and the baffle plates 43. Further, refer to the appendix of the instruction manual. Figure 1 and 2 As shown, the turntable 11 is provided with an oil baffle 15 corresponding to the inner side of the fixture assembly. The baffle 43, together with the baffle plate, can make the carrier 14 between the two angles, forming a semi-enclosed space to prevent the oil from spreading when the oil pen 34 sprays oil.

[0035] Its specific working principle is as follows: The robotic arm embeds the mixing nut and mixing screw into the mixing nut fixture 143 and mixing screw fixture 144 in each fixture group, respectively. The stepper motor 121 drives the turntable 11 to rotate intermittently clockwise through the reducer 122. When the center position between two adjacent fixture groups rotates to the center position of the front of the corresponding frame 2, it stops. Then, the baffle cylinder 41 drives the baffle plate 42 to move towards the turntable 11. When the two baffle plates 43 on the baffle plate 42 cut into the two adjacent fixture groups... When the front of two adjacent carriers 14 in the group stops, the baffle 43 and the oil baffle 15 form an angle, and the mixing screw and mixing nut embedded in the two adjacent carriers are respectively located within the two angles. Then, the oiling cylinder 32 drives the oiling pen 34 to move obliquely downward through the boom 33 until the oil nozzle at the end of the oiling pen 34 approaches the position of the O-ring mounting groove on the corresponding mixing screw and mixing nut and stops. Then, the lifting cylinder 132 drives the coating motor through the connecting block 133. 134 and the clutch-type drive disc 135 rise, stopping after the clutch-type drive disc 135 engages with the corresponding clutch-type driven disc 142. Then, the coating motor 134 drives the clutch-type drive disc 135 to rotate, which in turn drives the engaged clutch-type driven disc 142 to rotate. The clutch-type driven disc 142 then drives the connected mixing nut or mixing screw to rotate synchronously. Simultaneously, the oiling pen 34 sprays oil onto the corresponding mixing nut and mixing screw. The mixing nut and mixing screw are then activated by the lifting clutch. The mechanism 13 drives the rotation, which can ensure the uniformity of the oil spraying on the outer periphery. After the spraying is completed, the oil dotting pen 34 and the baffle plate 42 reset backward, and the clutch-type drive disc 135 resets downward. After the upper group of components resets, the indexing mechanism 12 continues to drive the turntable 11 to rotate. The coated mixing nut and mixing screw can enter the next O-ring assembly process. At the same time, a new set of mixing nuts and mixing screws to be coated enters the position to be sprayed with oil, thereby realizing the continuous oil dotting and coating work of the mixing nuts and mixing screws.

[0036] This mixing valve O-ring assembly uses an oil application mechanism. Through two sets of oil application mechanisms, it can automatically apply lubricating oil to the mixing nut and mixing screw mounted on the mixing nut fixture and mixing screw fixture on the turntable. The turntable can rotate in steps via a stepper motor, which facilitates the step-by-step movement of the mixing nut and mixing screw placed on the turntable, making it easier to continuously apply lubricating oil. This improves the lubricating oil application efficiency on the mixing nut and mixing screw, thereby facilitating the subsequent assembly of the O-ring, saving manpower, reducing production costs, and improving production efficiency.

[0037] It should be emphasized that the above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dotted oil coating mechanism for an O-ring assembly of a mixing valve, characterized in that: The rotary coating mechanism (1) includes a rotary coating mechanism (1) for placing the mixing valve mixing nut and the mixing screw. A frame (2) is provided on one side of the rotary coating mechanism (1). Two sets of oiling mechanisms (3) are arranged side by side on the frame (2) to spray oil onto the mixing valve mixing nut and the mixing screw respectively. The rotary coating mechanism (1) includes a horizontally arranged turntable (11). Multiple sets of fixtures are arranged in a circular array along the circumference of the turntable (11). Each fixture set includes two side by side carriers (14). The two side by side carriers (14) are respectively provided with a mixing nut fixture (143) for placing the mixing valve mixing nut and a mixing screw fixture (144) for placing the mixing screw. An indexing mechanism (12) is provided at the bottom center of the turntable (11) to drive its horizontal rotation. A lifting clutch mechanism (13) is provided between the indexing mechanism (12) and the frame (2). The lifting clutch mechanism (13) has two sets. The distance between the two sets of lifting clutch mechanisms (13) is the same as the distance between two adjacent carriers (14) in the fixture group. The movement trajectory of the carrier (14) passes directly above the lifting clutch mechanism (13). The oiling mechanism (3) consists of an adjusting seat (31), an oiling cylinder (32), and an oiling pen (34). The adjusting seat (31) is located on the top of the frame (2). The oiling cylinder (32) is fixedly installed on the front of the adjusting seat (31). The oiling pen (34) is movably connected to the oiling cylinder (32). The oiling cylinder (32) can drive the oiling pen (34) to move relative to the turntable (11).

2. The oil coating mechanism for a mixing valve O-ring assembly according to claim 1, characterized in that: The carrier (14) includes a connecting seat (141) and a clutch-type driven plate (142) disposed below the connecting seat (141); the connecting seat (141) is fixed to the turntable (11) by screws, and its top center passes through the upper and lower ends of the turntable (11); the mixing nut fixture (143) and the mixing screw fixture (144) are respectively shaft-connected to two independent carriers (14), and the lower ends of the mixing nut fixture (143) and the mixing screw fixture (144) are respectively fixed to the clutch-type driven plate (142) below the bottom of the two independent carriers (14). Connection; The lifting clutch mechanism (13) includes a base (131), on which a lifting cylinder (132) with a piston rod that can move up and down is provided. The top of the piston rod of the lifting cylinder (132) is provided with a connecting block (133) that is fixedly connected to it. The bottom of the connecting block (133) is provided with a coating motor (134) that is fixedly connected to it. The top of the connecting block (133) is provided with a clutch-type drive disc (135) that is drivenly connected to the coating motor (134). The clutch-type driven disc (142) can pass directly above the clutch-type drive disc (135).

3. The oil coating mechanism for a mixing valve O-ring assembly according to claim 1, characterized in that: The adjustment seat (31) is movably mounted on the top of the frame (2) via a fine-tuning slide (35).

4. The dotting and coating mechanism for the O-ring assembly of a mixing valve according to claim 1, characterized in that: The oiling pen (34) is movably connected to the oiling cylinder (32) via a boom (33). The boom (33) is provided with an arc-shaped adjustment groove, and the oiling pen (34) is fixedly installed in the arc-shaped adjustment groove by bolts.

5. The oil coating mechanism for a mixing valve O-ring assembly according to claim 1, characterized in that: The spacing between the two adjacent sets of fixtures is the same as the spacing between the two sets of oiling mechanisms (3); the oil nozzles of the two sets of oiling pens (34) correspond to the upper parts of the adjacent mixing nut fixture (143) and mixing screw fixture (144) in the two adjacent sets of fixtures.

6. The dotting and coating mechanism for the O-ring assembly of a mixing valve according to claim 1, characterized in that: The indexing mechanism (12) consists of a stepper motor (121) and a reducer (122); the reducer (122) is shaft-connected to the bottom center of the turntable (11), and the stepper motor (121) is connected to the reducer (122) in a transmission connection.

7. The oil coating mechanism for a mixing valve O-ring assembly according to claim 1, characterized in that: An oil spraying baffle device (4) is provided on the frame (2) below the oiling mechanism (3); the oil spraying baffle device (4) consists of a baffle cylinder (41), a baffle plate (42) and a baffle (43). The back center of the baffle plate (42) is fixedly connected to the piston rod end of the baffle cylinder (41), and its front face corresponds to the turntable (11). The bottom height of the baffle plate (42) is higher than the top height of the turntable (11). There are two baffles (43), which are vertically arranged on the front face of the baffle plate (42) near both ends. The distance between the two baffles (43) is not less than the distance between the two sets of fixtures.

8. The dotting and coating mechanism for the O-ring assembly of a mixing valve according to claim 1, characterized in that: The turntable (11) is provided with an oil baffle (15) that corresponds to the inner side of the fixture assembly.

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