Joint robot special light weight electric spindle

Abstract

The present application relates to the technical field of electric spindle, disclose a kind of lightweight electric spindle special for articulated robot, comprising: main unit, main unit includes electric spindle, the inner wall of electric spindle is rotatably connected with shaft, two bearings are arranged on the outer side of shaft, the stator coil is fixedly connected to the outer wall of electric spindle, and the stator coil is between the two bearings, lubricating unit with lubricating function is arranged in the inside of electric spindle, the left side of lubricating unit is provided with the purification unit with cleaning function, and the lubricating unit includes the first gear arranged on the outer side of shaft, and the first gear is located at the right side of bearing position. Its beneficial effect is: the structure of adjusting assembly can be adjusted according to the use frequency of electric spindle The amount of ejection of lubricating liquid is adjusted, so that the lubricating liquid can be lubricated according to the use frequency of electric spindle, so as to reduce the side effects caused by excessive accumulation of lubricating liquid, such as friction heating aggravation, so as to reduce the damage to the liquid in the electric spindle.

Description

Technical Field

[0001] This invention relates to the field of electric spindle technology, and in particular to a lightweight electric spindle specifically designed for articulated robots. Background Technology

[0002] Electric spindles are typically made of lightweight materials, such as aluminum alloys or composite materials, to reduce overall weight and improve the robot's mobility and precision. The lubrication frequency of an electric spindle depends on the specific application and operating conditions.

[0003] For a normally operating electric spindle, the lubrication cycle may be once a week, month, or quarter. Excessive lubricant may accumulate inside the electric spindle, leading to localized overheating and affecting its lifespan and performance. Too much lubricant may also alter the mechanical properties of the electric spindle, causing increased vibration and noise, and may even cause mechanical failure. Furthermore, some existing lightweight electric spindles specifically designed for articulated robots require periodic lubrication during use. However, when using articulated robots, multiple lightweight electric spindles are combined to control the movement direction of the robotic gripper. Since the activity frequencies of articulated robots vary, operators do not adjust the lubrication of each spindle individually when lubricating them. This results in lubricant accumulation in some articulated robots. The accumulated lubricant mixes with impurities in the air, causing these impurities to wear down the associated structures.

[0004] Therefore, it is necessary to provide a lightweight electric spindle specifically for articulated robots to solve the above problems. Summary of the Invention

[0005] In view of the aforementioned problems with lightweight electric spindles specifically designed for articulated robots, this invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a lightweight electric spindle specifically for articulated robots. This addresses the issue that while articulated robots require periodic lubrication during use, multiple lightweight electric spindles are often combined to control the movement direction of the robotic gripper. Since the activity frequencies of articulated robots vary, lubrication is not adjusted individually by the operator, leading to lubrication buildup in some sections. This accumulated lubricant mixes with impurities in the air, causing wear and tear on related structures.

[0007] To solve the above technical problems, the present invention provides the following technical solution: a lightweight electric spindle for articulated robots, comprising: a main body unit, the main body unit including an electric spindle, a rotating shaft rotatably connected to the inner wall of the electric spindle, two bearings disposed on the outer side of the electric spindle, a stator coil fixedly connected to the outer wall of the rotating shaft, the stator coil being located between the two bearings, a lubrication unit with lubrication function disposed inside the electric spindle, and a purification unit with cleaning function disposed on the left side of the lubrication unit;

[0008] The lubrication unit includes a first gear disposed on the outer side of the rotating shaft, and the first gear is located on the right side of the bearing. A start / stop component with a timing function is disposed on the right side of the first gear. A reciprocating lead screw is disposed on the left side of the start / stop component. An adjustment component with a pushing function is slidably disposed on the outer side of the reciprocating lead screw. A slider is rotatably connected to the inner wall of the adjustment component. An auxiliary component with an auxiliary pushing function is disposed inside the adjustment component. A liquid bag is fixedly connected to the left side of the auxiliary component, and the liquid bag is slidably connected to the electric spindle. A spray pipe is fixedly connected to the left side of the liquid bag, and the output end of the spray pipe is parallel to the left bearing. A suction pipe is fixedly connected to the left side of the liquid bag, and the suction pipe is located on the side of the spray pipe away from the rotating shaft. A liquid storage component with a liquid storage function is disposed on the side of the suction pipe away from the liquid bag. A limit plate is slidably connected to the right side of the liquid storage component via a shaft.

[0009] As a preferred embodiment of the lightweight electric spindle for articulated robots described in this invention, the start / stop assembly includes a speed sensor disposed on the right side of the first gear, the electric spindle has multiple first slide cylinders disposed inside, the first slide cylinders are arranged parallel to the first gear, the outer wall of the first slide cylinder is slidably connected to a second gear, and the first gear and the second gear mesh with each other, an electric actuator is fixedly connected to the right side of the first slide cylinder, and a plug rod is fixedly connected to the right side of the reciprocating lead screw.

[0010] As a preferred embodiment of the lightweight electric spindle for articulated robots described in this invention, the first slide cylinder has a hexagonal slot on its left side that matches the insertion rod, the insertion rod has a rounded corner on its right side, and triangular stripes are provided between the second gear and the first slide cylinder.

[0011] As a preferred embodiment of the lightweight electric spindle for articulated robots described in this invention, the adjustment assembly includes a second slide cylinder disposed on the outer wall of the slider, and the second slide cylinder is slidably connected to the electric spindle. An adjustment rod is fixedly connected to the inner wall of the second slide cylinder, and a threaded ring is threadedly connected to the outer wall of the second slide cylinder, with the threaded ring located on the left side of the second slide cylinder. A push plate is fixedly connected to the end of the adjustment rod away from the slider.

[0012] As a preferred embodiment of the lightweight electric spindle for articulated robots described in this invention, the liquid storage assembly includes a sleeve disposed on the outer wall of the electric spindle, and the sleeve and the liquid bag are positioned correspondingly. The inner wall of the sleeve is provided with a plurality of liquid storage curved tubes, and the liquid storage curved tubes are positioned correspondingly to the extraction tubes. The extraction tube is slidably connected to a liquid extraction pipe at the end away from the rotating shaft, and a gravity ball is disposed at the end of the liquid extraction pipe away from the extraction tube.

[0013] As a preferred embodiment of the lightweight electric spindle for articulated robots described in this invention, the auxiliary component includes a slide rod disposed on the inner wall of the push plate, a limit sleeve fixedly connected to the right end of the slide rod, and a connecting plug fixedly connected to the left end face of the slide rod.

[0014] As a preferred embodiment of the lightweight electric spindle for articulated robots described in this invention, the purification unit includes two connecting rods disposed on the outer wall of the second slide cylinder. A spring is fixedly connected to the end of the connecting rod away from the second slide cylinder, and a rubber plug is fixedly connected to the end of the spring away from the connecting rod. A ventilation groove matching the rubber plug is opened on the inner wall of the electric spindle. An air pipe is fixedly connected to the inner wall of the ventilation groove away from the rubber plug, and the air pipe is fixedly connected to a spray pipe.

[0015] The beneficial effects of this invention are:

[0016] 1. By adjusting the structure of the adjustment component, the amount of lubricating fluid sprayed can be adjusted according to the usage frequency of the electric spindle. This allows the lubricating fluid to lubricate the electric spindle according to its usage frequency, thereby reducing the side effects such as excessive lubricating fluid accumulation leading to increased friction and heat. This reduces damage to the fluid inside the electric spindle and prevents excessive lubricating fluid from mixing with impurities inside the electric spindle, thus ensuring the cleanliness and safety of the electric spindle's interior.

[0017] 2. After the adjustment component structure moves, the lubricating liquid is sprayed through the push plate structure, thereby quickly and evenly spraying the lubricating liquid onto the bearing structure to complete the lubrication operation. After spraying, the structure is reset, and the power transmission between the first gear and the reciprocating screw is released through the start-stop component structure, thus completing the lubrication work.

[0018] 3. By setting up a purification unit structure, the area where the lubricating liquid is sprayed is cleaned by the outflow of gas before the lubricating unit sprays the lubricating liquid. This prevents the lubricating liquid from mixing with impurities and accumulating, which would cause severe wear during the power transmission process. The spring structure is designed with elasticity and has a certain degree of contraction, so it will not affect the normal use of the lubrication unit structure. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of a lightweight electric spindle for articulated robots according to the present invention.

[0021] Figure 2 This is a front cross-sectional view of a lightweight electric spindle for articulated robots according to the present invention.

[0022] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle.

[0023] Figure 4 For the present invention Figure 2 Enlarged structural diagram at point B.

[0024] Figure 5 This is a schematic diagram of the connection structure between the start / stop assembly and the purification unit of a lightweight electric spindle for articulated robots according to the present invention.

[0025] Figure 6 This is a schematic diagram of the lubrication unit connection structure of a lightweight electric spindle for articulated robots according to the present invention.

[0026] Reference numerals: 100, Main body unit; 101, Electric spindle; 102, Rotating shaft; 103, Bearing; 104, Stator coil; 200, Lubrication unit; 201, First gear; 202, Start-stop assembly; 2021, Speed ​​sensor; 2022, Electric actuator; 2023, Second gear; 2024, First slide; 2025, Insert rod; 203, Reciprocating lead screw; 204, Adjustment assembly; 2041, Second slide; 2042, Adjustment rod; 2043, Threaded ring ; 2044, Push plate; 205, Slider; 206, Auxiliary component; 2061, Slide rod; 2062, Limiting sleeve; 2063, Connecting plug; 207, Liquid bag; 208, Spray pipe; 209, Pulling pipe; 210, Liquid storage component; 2101, Bag; 2102, Liquid storage curved pipe; 2103, Pulling pipe; 2104, Gravity ball; 211, Limiting curved plate; 300, Purification unit; 301, Connecting rod; 302, Spring; 303, Rubber stopper; 304, Air pipe. Detailed Implementation

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0030] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included. In the description of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" 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, an electrical connection, or a connection that allows for mutual communication; 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 the present invention according to the specific circumstances.

[0031] Reference Figure 1-6 According to an embodiment of the present invention, a lightweight electric spindle for articulated robots is provided, comprising: a main body unit 100, the main body unit 100 including an electric spindle 101, a rotating shaft 102 rotatably connected to the inner wall of the electric spindle 101, two bearings 103 disposed on the outer side of the rotating shaft 102, a stator coil 104 fixedly connected to the outer wall of the electric spindle 101, the stator coil 104 being located between the two bearings 103, a lubrication unit 200 with lubrication function disposed inside the electric spindle 101, and a purification unit 300 with cleaning function disposed on the left side of the lubrication unit 200;

[0032] Lubrication unit 200 includes a first gear 201 disposed on the outer side of rotating shaft 102, and the first gear 201 is located to the right of bearing 103. A start / stop component 202 with a timing function is disposed on the right side of the first gear 201. A reciprocating screw 203 is disposed on the left side of the start / stop component 202. An adjustment component 204 with a pushing function is slidably disposed on the outer side of the reciprocating screw 203. A slider 205 is rotatably connected to the inner wall of the adjustment component 204. An auxiliary component 206 with an auxiliary pushing function is disposed inside the adjustment component 204. A liquid bag 207 is fixedly connected to the left side of the 6th column, and the liquid bag 207 is slidably connected to the electric spindle 101. A spray pipe 208 is fixedly connected to the left side of the liquid bag 207, and the output end of the spray pipe 208 is parallel to the left bearing 103. A suction pipe 209 is fixedly connected to the left side of the liquid bag 207, and the suction pipe 209 is located on the side of the spray pipe 208 away from the rotating shaft 102. A liquid storage component 210 with liquid storage function is provided on the side of the suction pipe 209 away from the liquid bag 207. A limit plate 211 is slidably connected to the right side of the liquid storage component 210 through a shaft.

[0033] Specifically, when using this device, the lightweight spindle needs to be installed inside the articulated robot. Then, the electric spindle 101 can be started to drive the articulated robot to work. It is fixedly connected to the rotating shaft 102 via the first gear 201. During the rotation of the rotating shaft 102 and the stator coil 104, the first gear 201 rotates. After a period of use, when lubrication of the bearing 103 inside the electric spindle is required, the start / stop component 202 needs to be activated. This causes the rotating shaft 102 to drive the entire lubrication unit 200 through the start / stop component 202. The start / stop component 202 drives the reciprocating screw 203 to rotate. The reciprocating screw 203, through the slider 205, drives the adjusting component 204 to rotate. After the adjusting component 204 moves to the left inside the electric spindle 101, it drives the auxiliary assembly... The structure of component 206 presses the liquid stored inside the liquid bag 207 into the spray pipe 208. When the electric spindle is used for the first time, the structure of the adjusting component 204 needs to be moved to the right side inside the electric spindle 101 to accumulate lubricating liquid inside the liquid bag 207. Then, the liquid inside the spray pipe 208 is atomized through the nozzle to lubricate the bearing 103. When the structure of the adjusting component 204 is reset, the adjusting component 204 drives the auxiliary component 206 to move. The auxiliary component 206 drives the liquid bag 207 to return to its original position. During the return process, the liquid bag 207 generates suction and pulls the liquid stored inside the liquid storage component 210 into the liquid bag 207 through the structure of the suction pipe 209. One-way valves are provided between the liquid bag 207 and the spray pipe 208 or between the liquid bag 207 and the suction pipe 209 for sequential use of the structure.

[0034] Reference Figure 2 and Figure 5-6As shown, the start-stop assembly 202 includes a speed sensor 2021 disposed on the right side of the first gear 201. The electric spindle 101 has multiple first slide cylinders 2024 disposed inside, and the first slide cylinders 2024 are arranged parallel to the first gear 201. The outer wall of the first slide cylinder 2024 is slidably connected to a second gear 2023, and the first gear 201 and the second gear 2023 mesh with each other. An electric actuator 2022 is fixedly connected to the right side of the first slide cylinder 2024. A plug rod 2025 is fixedly connected to the right side of the reciprocating screw 203. A hexagonal slot matching the plug rod 2025 is opened on the left side of the first slide cylinder 2024. The right side of the plug rod 2025 is rounded. Triangular stripes are provided between the second gear 2023 and the first slide cylinder 2024.

[0035] Specifically, when using this structure, the number of teeth on the second gear 2023 can be adjusted to regulate the speed at which the lubricating liquid is sprayed from the lubrication unit 200. The rotational speed of the first gear 201 is detected by the speed sensor 2021, and the number of rotations of the first gear 201 is recorded. Thus, the lubrication cycle can be manually set, and the electric actuator 2022 is automatically activated when lubrication is needed. The electric actuator 2022 pushes the insert rod 2025 into the reciprocating screw 203, thereby completing the connection of the start-stop assembly 202. Triangular stripes are provided between the second gear 2023 and the first slide cylinder 2024, which have the advantages of friction resistance and high pressure resistance. The rounded corner on the right side of the insert rod 2025 facilitates the connection between the first slide cylinder 2024 and the reciprocating screw 203, and will not cause jamming.

[0036] Reference Figure 2-3 As shown, the adjustment assembly 204 includes a second slide cylinder 2041 disposed on the outer wall of the slider 205, and the second slide cylinder 2041 is slidably connected to the electric spindle 101. An adjustment rod 2042 is fixedly connected to the inner wall of the second slide cylinder 2041, and a threaded ring 2043 is threadedly connected to the outer wall of the second slide cylinder 2041. The threaded ring 2043 is located on the left side of the second slide cylinder 2041. A push plate 2044 is fixedly connected to the end of the adjustment rod 2042 away from the slider 205.

[0037] Specifically, when using a lightweight electric spindle for articulated robots, the structure of the adjustment component 204 can be adjusted to adapt to different activity frequencies of the lightweight electric spindle. First, the threaded ring 2043 and the second slide cylinder 2041 can be separated, allowing the adjustment rod 2042 to move inside the second slide cylinder 2041. This allows for adjustment based on the activity frequency of the lightweight electric spindle. Then, the threaded ring 2043 is used to fix the second slide cylinder 2041 and the adjustment rod 2042, completing the adjustment. The operation is convenient. After the adjustment component 204 moves, the push plate 2044 pressurizes and sprays the lubricating liquid inside the liquid bag 207, quickly and evenly spraying the lubricating liquid onto the bearing 103 structure, completing the lubrication operation. After spraying, the structure is reset, and the start / stop component 202 disconnects the power transmission between the first gear 201 and the reciprocating screw 203, thus completing the lubrication work.

[0038] Reference Figure 2-4 As shown, the liquid storage assembly 210 includes a sleeve 2101 disposed on the outer wall of the electric spindle 101, and the sleeve 2101 is positioned corresponding to the liquid bag 207. The inner wall of the sleeve 2101 is provided with a plurality of liquid storage curved tubes 2102, and the liquid storage curved tubes 2102 are positioned corresponding to the suction tubes 209. The end of the suction tube 209 away from the rotating shaft 102 is slidably connected to a liquid suction tube 2103, and the end of the liquid suction tube 2103 away from the suction tube 209 is provided with a gravity ball 2104.

[0039] Specifically, when this structure is needed, sufficient lubricating liquid can be stored inside the liquid storage curved tube 2102 of the liquid storage component 210. Then, the structure of the limiting curved plate 211 is opened to adjust the structure of the adjusting component 204. The structure of the bag 2101 is fixed and limited by the squeezing action between the limiting curved plate 211 and the electric spindle 101. The overall structure of the bag 2101 is a soft rubber structure used for the connection between the suction tube 209 and the liquid storage curved tube 2102. When the suction tube 209 is inserted into the liquid storage curved tube 2102, the liquid stored inside the liquid storage curved tube 2102 will flow out through the suction tube 209. The structure of the suction tube 209 and the suction tube 2103 is connected as an insertion-type through structure. The structure with the gravity ball 2104 has a gravity effect, thereby ensuring that the suction port of the suction tube 2103 is located at the lowest position of the liquid storage curved tube 2102, so that the normal use of the structure will not be affected by the change of the usage position of the lightweight electric spindle for articulated robots.

[0040] Reference Figure 2-3 As shown, the auxiliary component 206 includes a slide rod 2061 disposed on the inner wall of the push plate 2044. A limit sleeve 2062 is fixedly connected to the right end of the slide rod 2061, and a connecting plug 2063 is fixedly connected to the left end face of the slide rod 2061.

[0041] Specifically, the auxiliary component 206 is designed to work in conjunction with the purification unit 300. During the movement of the push plate 2044, the length of the slide rod 2061 and the structure of the limiting sleeve 2062 are used for limiting, so that the purification unit 300 and the adjustment component 204 can operate sequentially. The purification unit 300 first processes part of the internal structure of the electric spindle 101, and then the adjustment component 204 is activated to lubricate the structure, thereby ensuring the normal operation of the purification unit 300 during cleaning.

[0042] Reference Figure 5-6 As shown, the purification unit 300 includes two connecting rods 301 disposed on the outer wall of the second slide cylinder 2041. A spring 302 is fixedly connected to one end of the connecting rod 301 away from the second slide cylinder 2041, and a rubber plug 303 is fixedly connected to one end of the spring 302 away from the connecting rod 301. An air groove matching the rubber plug 303 is opened on the inner wall of the electric spindle 101. An air pipe 304 is fixedly connected to the inner wall of the air groove away from the rubber plug 303, and the air pipe 304 is fixedly connected to the spray pipe 208.

[0043] Specifically, by setting the purification unit 300 structure before the lubrication unit 200 sprays lubricating liquid, the reciprocating screw 203 drives the connecting rod 301 and spring 302 to move at the beginning of the movement. The spring 302 drives the rubber plug 303 to discharge the air accumulated in the venting groove into the spray pipe 208 through the air pipe 304, so that the gas cleans the position of the sprayed lubricating liquid, thereby preventing the accumulation of too many impurities in the lubricating liquid, which would cause severe wear during the power transmission of the structure. The structure with spring 302 has elasticity and a certain contraction function, so it will not affect the normal use of the lubrication unit 200 structure. The spring 302 structure in the purification unit 300 structure can be used for a long time. The structure of the auxiliary component 206 allows the rubber plug 303 to move one step ahead of the connecting plug 2063, so as not to affect the use of the structure.

[0044] Working Principle: When using this device, the lightweight spindle needs to be installed inside the articulated robot. Then, the electric spindle 101 can be started to drive the articulated robot to work. It is fixedly connected to the rotating shaft 102 through the first gear 201. During the rotation of the rotating shaft 102 and the stator coil 104, the first gear 201 structure rotates. After a period of use, when the bearing 103 inside the electric spindle needs to be lubricated, the start-stop component 202 structure needs to be started. This causes the rotating shaft 102 to drive the entire lubrication unit 200 structure through the start-stop component 202 structure. The start-stop component 202 structure drives the reciprocating screw 203 to rotate. The reciprocating screw 203 drives the adjusting component 204 structure to rotate through the slider 205. After the adjusting component 204 structure moves to the left inside the electric spindle 101, it drives the auxiliary component 206 structure to press the liquid stored in the liquid bag 207 into the spray pipe 208. When the electric spindle is used for the first time, the adjusting component 204 structure needs to be moved to the right position inside the electric spindle 101. The liquid bag 207 stores lubricating liquid, and then the liquid inside the spray pipe 208 is atomized through the nozzle to lubricate the bearing 103 structure. When the adjusting component 204 resets, it drives the auxiliary component 206 to move, and the auxiliary component 206 drives the liquid bag 207 to return to its original position. During the return process, the liquid bag 207 generates suction, which draws the liquid stored in the storage component 210 into the liquid bag 207 through the suction pipe 209. One-way valves are installed between the liquid bag 207 and the spray pipe 208 or between the liquid bag 207 and the suction pipe 209 to determine the order of use. By adjusting the structure of the adjusting component 204, the amount of lubricating liquid sprayed can be adjusted according to the usage frequency of the electric spindle, so that the lubricating liquid can lubricate according to the usage frequency of the electric spindle. This reduces the side effects such as excessive accumulation of lubricating liquid leading to increased friction and heat, thereby reducing damage to the liquid inside the electric spindle and preventing excessive lubricating liquid from mixing with impurities inside the electric spindle, thus ensuring the cleanliness and safety of the electric spindle.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A joint robot dedicated lightweight motorized spindle, characterized by, The utility model relates to a main shaft lubricating device, and belong to the field of machine tool lubricating device. The main shaft (101) is internally provided with a lubricating unit (200) with lubricating function, and the lubricating unit (200) is provided on the left side with a purifying unit (300) with cleaning function. The lubricating unit (200) comprises a first gear (201) arranged on the outer side of the rotating shaft (102), and the first gear (201) is located on the right side of the bearing (103). The first gear (201) is provided on the right side with a start-stop assembly (202) with timing function, and the start-stop assembly (202) is provided on the left side with a reciprocating screw rod (203). The reciprocating screw rod (203) is provided on the outer side with an adjusting assembly (204) with pushing function, and the adjusting assembly (204) is rotatably connected with a sliding block (205) on the inner wall. The adjusting assembly (204) is provided on the inner side with an auxiliary assembly (206) with auxiliary pushing function, and the auxiliary assembly (206) is fixedly connected with a liquid bag (207) on the left side. The liquid bag (207) is slidably connected with the main shaft (101), and the liquid bag (207) is fixedly connected with a spray pipe (208) on the left side. The spray pipe (208) is parallel to the left bearing (103) at the output end. The start-stop assembly (202) comprises a rotating speed sensor (2021) arranged on the right side of the first gear (201). The main shaft (101) is internally provided with a plurality of first sliding cylinders (2024) arranged in parallel with the first gear (201). The first sliding cylinder (2024) is slidably connected with a second gear (2023) on the outer wall. The first gear (201) and the second gear (2023) are meshed with each other. The first sliding cylinder (2024) is fixedly connected with an electric pusher (2022) on the right side. The reciprocating screw rod (203) is fixedly connected with a plug rod (2025) on the right side. The adjusting assembly (204) comprises a second sliding cylinder (2041) arranged on the outer wall of the sliding block (205). The second sliding cylinder (2041) is slidably connected with the main shaft (101) on the inner wall. The second sliding cylinder (2041) is fixedly connected with an adjusting rod (2042) on the inner wall. The second sliding cylinder (2041) is threadedly connected with a threaded ring (2043) on the outer wall. The threaded ring (2043) is located on the left side of the second sliding cylinder (2041). The adjusting rod (2042) is fixedly connected with a push plate (2044) at the end away from the sliding block (205). The purification unit (300) includes two connecting rods (301) arranged on the outer wall of the second sliding cylinder (2041), one end of the connecting rod (301) away from the second sliding cylinder (2041) is fixedly connected with a spring (302), one end of the spring (302) away from the connecting rod (301) is fixedly connected with a rubber plug (303), the inner wall of the electric spindle (101) is provided with a ventilation groove matched with the rubber plug (303), the inner wall of one side of the ventilation groove away from the rubber plug (303) is fixedly connected with an air pipe (304), and the air pipe (304) is fixedly connected with the spray pipe (208).

2. A light-weight motorized spindle for articulated robots according to claim 1, characterized in that: The left side of the first sliding cylinder (2024) is provided with a hexagonal clamping groove matched with the insertion rod (2025), the right side of the insertion rod (2025) is provided with a rounded corner, and the second gear (2023) and the first sliding cylinder (2024) are provided with triangular stripes.

3. A light-weight motorized spindle for articulated robots according to claim 1, characterized in that: The left side of the liquid bag (207) is fixedly connected with a suction pipe (209), and the suction pipe (209) is located on the side of the spray pipe (208) away from the rotating shaft (102), the side of the suction pipe (209) away from the liquid bag (207) is provided with a liquid storage assembly (210) with a liquid storage function, and the right side of the liquid storage assembly (210) is slidingly connected with a limiting curved plate (211) through a shaft.

4. A light-weight motorized spindle for articulated robots according to claim 3, characterized in that: The liquid storage assembly (210) includes a bag sleeve (2101) arranged on the outer wall of the electric spindle (101), and the bag sleeve (2101) corresponds to the position of the liquid bag (207), a plurality of liquid storage curved pipes (2102) are arranged on the inner wall of the bag sleeve (2101), and the liquid storage curved pipes (2102) correspond to the positions of the suction pipe (209), one end of the suction pipe (209) away from the rotating shaft (102) is slidingly connected with a liquid suction pipe (2103), and one end of the liquid suction pipe (2103) away from the suction pipe (209) is provided with a gravity ball (2104).

5. A light-weight motorized spindle for articulated robots according to claim 1, characterized in that: The auxiliary assembly (206) includes a sliding rod (2061) arranged on the inner wall of the push plate (2044), the right end of the sliding rod (2061) is fixedly connected with a limiting sleeve (2062), and the left end surface of the sliding rod (2061) is fixedly connected with a connecting plug (2063).

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