Screw groove cleaning and brushing dustproof mechanism for ball screw

Abstract

The utility model discloses a lead screw groove brushing dustproof mechanism for a ball screw, which belongs to the technical field of ball screws and comprises a mounting frame, a lead screw shaft is rotatably connected above the mounting frame through a servo motor, a threaded guide wheel is matched outside the lead screw shaft, and a ball and a ball retainer are matched inside the threaded guide wheel. When the dustproof mechanism and the lead screw shaft stop working, the miniature inflator pump inflates a proper amount of gas into the air bags, so that the air bags expand and are tightly clamped on the outer wall of the lead screw shaft, the two expanded annular air bags seal openings in the two sides of the threaded guide wheel, external dust is prevented from entering the threaded guide wheel, and the service life of the threaded guide wheel is prolonged. When the lead screw shaft needs to work, the air release valve is opened to discharge air in the air bag, the air bag is close to the inner wall of the dustproof ring under the action of the elastic force of the tension spring, the air bag is prevented from making contact with the lead screw shaft when the lead screw shaft works, and the using effect is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of ball screws, in particular to a screw groove cleaning and dust prevention mechanism for a ball screw. Background Art

[0002] Ball screw is an ideal product for converting rotary motion into linear motion, or converting linear motion into rotary motion. It is the most commonly used transmission element in tool machinery and precision machinery. Its main function is to convert rotary motion into linear motion, or convert torque into axial repetitive force. It also has the characteristics of high precision, reversibility and high efficiency.

[0003] Among them, after searching, it was found that there is an application number CN202123326727.3, which discloses a dust-proof ball screw, including a screw and a ball nut. Threaded holes are opened on the left and right sides of the ball nut. It has the function of a sealing sleeve. Under the cooperation of the spring, the movable plate can drive the sealing strip and the ball slide groove of the screw to stick tightly, so as to seal the two ends of the ball nut and avoid the influence of dust on it. Through the function of the sealing card plate and the brush plate, when the ball nut moves, its brush plate can quickly clean the surface of the moving screw, realizing The dust removal capability enables the screw rod to achieve the purpose of dust prevention, and solves the problem that during the operation of the existing ball screw, particulate dust is easily caused to enter the spiral track, thereby affecting the normal operation of the ball, and at the same time causing increased wear between the screw and the nut, reducing its service life. Through the cooperation of the second mounting countersunk hole and the second bolt, the sealing card plate can be quickly disassembled and assembled, and through the cooperation of the first bolt and the threaded hole, the sealing sleeve can be quickly disassembled and assembled, thereby facilitating the replacement and maintenance of the sealing sleeve and the sealing card plate, and facilitating people's use.

[0004] However, after research, it was found that: the ball screw seals the ball slide groove through a sealing strip. When the ball nut moves, the sealing strip will generate friction with the screw, affecting the movement of the ball nut, and the use effect is not good enough. In addition, the dust swept off by the brush plate floats and still contaminates the screw, and the dust adhered to the surface of the brush plate is not easy to clean. The dust on the surface of the brush plate will reversely adhere to the surface of the screw, affecting the cleaning effect of the screw. The cleaning effect is not good enough, and it is not convenient to disassemble and replace the brush plate. Therefore, a new device is provided to solve this problem. Utility Model Content

[0005] The utility model aims to provide a screw groove cleaning and dust prevention mechanism for a ball screw in order to solve the above-mentioned problems of insufficient use effect and insufficient dust cleaning effect.

[0006] The technical solution adopted by the utility model is as follows: a screw groove cleaning and dust prevention mechanism for a ball screw, comprising a mounting frame, a screw shaft is rotatably connected to the mounting frame through a servo motor, a threaded guide wheel is provided on the outside of the screw shaft, and a ball and a ball retainer are provided inside the threaded guide wheel;

[0007] The outside of the screw shaft is provided with a dust-proof mechanism for preventing dust from entering the inside of the threaded guide wheel, and a dust-cleaning mechanism for clearing dust inside the screw groove.

[0008] Among them, the dust-proof mechanism includes a connecting plate A, a connecting plate B, a dust-proof ring, an airbag and a micro air pump. The connecting plate A and the connecting plate B are fixedly installed on the upper and lower sides of the threaded guide wheel respectively. Dust-proof rings are symmetrically fixedly installed on both sides of the threaded guide wheel. An airbag is bonded to the inner wall of the dust-proof ring, and a tension spring is installed inside the airbag. A micro air pump is embedded in the connecting plate B, and the micro air pump is connected to the airbag pipeline. An air release valve is installed above the dust-proof ring, and the air release valve is connected to the airbag pipeline. The airbag is arranged in a ring shape.

[0009] Wherein, the dust cleaning mechanism includes a connecting column, a cleaning plate and a cavity, one side of the connecting plate A and one side of the connecting plate B are fixedly installed with connecting columns, and the ends of the connecting columns are threadedly connected with limiting nuts, the lower side of the connecting plate A and the upper side of the connecting plate B are movably connected with cleaning plates, and one side of the cleaning plate is provided with a connecting hole that fits with the connecting column, a cavity is provided inside the cleaning plate, and bristles are provided on the inner wall of the cleaning plate, a plurality of through holes communicating with the cavity are provided on the inner wall of the cleaning plate, and a connecting pipe communicating with the cavity is installed on the other side of the cleaning plate, and the lower side of the connecting plate A and the upper side of the connecting plate B are connected to the connecting pipe. Through grooves are provided at corresponding positions of the tubes, the cleaning plate is provided in a semicircular arc shape, and the bristle path on the inner wall of the cleaning plate is provided in a threaded shape that fits with the screw shaft, a mounting groove is embedded on one side of the mounting frame, and a dust collecting drawer is slidably connected to the inside of the mounting groove through a slide rail, a micro-vacuum pump is embedded and installed on one side of the mounting frame, and the inlet of the micro-vacuum pump is connected to the mounting groove pipeline, and a filter is embedded and installed on one side of the dust collecting drawer at a position corresponding to the inlet of the micro-vacuum pump, and the through grooves of the connecting plate A and the connecting plate B are connected to the mounting groove pipeline through the dust suction pipe, and an opening is provided on the other side of the dust collecting drawer at a position corresponding to the inlet of the dust suction pipe.

[0010] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0011] 1. In the utility model, through the dustproof mechanism, when the screw shaft stops working, the micro air pump fills a proper amount of gas into the airbag, so that the airbag expands and is tightly clamped on the outer wall of the screw shaft. The two expanded annular airbags seal the openings on both sides of the threaded guide wheel to prevent external dust from entering the threaded guide wheel. When the screw shaft needs to work, the air release valve is opened to discharge the gas inside the airbag. The airbag is close to the inner wall of the dustproof ring under the action of the tension spring elastic force, so that the airbag and the screw shaft are prevented from contacting when the screw shaft is working, and the use effect is better.

[0012] 2. In the utility model, through the dust cleaning mechanism, the micro vacuum pump works to extract the air inside the installation groove, the dust collecting drawer and the cavity, making them in a negative pressure state, and the dust swept by the cleaning plate is sucked into the dust collecting drawer from the through holes on the inner wall of the cleaning plate for collection, so that the dust cleaning is more thorough and the dust cleaning effect is better.

[0013] 3. In the present invention, the connection hole on one side of the cleaning plate is clamped on the outside of the connecting column, and then the limit nut is screwed on the end of the connecting column to achieve the installation of the cleaning plate. To remove the cleaning plate, you only need to reverse the above steps, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall side section structure of the utility model;

[0016] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0017] Figure 4 For the utility model Figure 3 A schematic diagram of the enlarged structure at B;

[0018] Figure 5 This is a schematic diagram showing the local three-dimensional structure of the cleaning plate in the utility model.

[0019] Markings in the figure: 1. Mounting frame; 101. Screw shaft; 1011. Servo motor; 102. Threaded guide wheel; 1021. Connecting plate A; 1022. Connecting plate B; 1023. Connecting column; 103. Dustproof ring; 1031. Air bag; 1032. Micro air pump; 104. Cleaning plate; 1041. Cavity; 2. Mounting slot; 201. Dust collection drawer; 202. Micro air pump. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the utility model:

[0022] Reference Figure 1-5 A screw groove cleaning and dust prevention mechanism for a ball screw includes a mounting frame 1, a screw shaft 101 is connected to the mounting frame 1 through a servo motor 1011, a threaded guide wheel 102 is provided on the outside of the screw shaft 101, and a ball and a ball retainer are provided inside the threaded guide wheel 102;

[0023] The outside of the screw shaft 101 is provided with a dust-proof mechanism to prevent dust from entering the inside of the threaded guide wheel, and a dust-cleaning mechanism to remove dust inside the screw groove.

[0024] Reference Figure 1-4 In this embodiment, the dustproof mechanism includes a connecting plate A1021, a connecting plate B1022, a dustproof ring 103, an airbag 1031 and a micro air pump 1032. The connecting plate A1021 and the connecting plate B1022 are fixedly installed on the upper and lower sides of the threaded guide wheel 102, respectively. The dustproof rings 103 are symmetrically fixedly installed on both sides of the threaded guide wheel 102. The airbag 1031 is bonded to the inner wall of the dustproof ring 103, and a tension spring is installed inside the airbag 1031. The micro air pump 1032 is embedded in the connecting plate B1022, and the micro air pump 1032 is connected to the airbag 1031 by a pipeline. An air release valve is installed above the dustproof ring 103, and the air release valve is connected to the airbag 1031 by a pipeline. The airbag 1031 is arranged in a ring shape.

[0025] When the screw shaft 101 stops working, the micro air pump 1032 fills a proper amount of gas into the airbag 1031, so that the airbag 1031 expands and is tightly clamped on the outer wall of the screw shaft 101, and the two expanded annular airbags 1031 seal the openings on both sides of the threaded guide wheel 102 to prevent external dust from entering the threaded guide wheel 102 and contaminating the ball bearings and causing wear to the screw shaft 101, thereby ensuring the service life of the screw shaft 101 and the threaded guide wheel 102. When the screw shaft 101 needs to work, the air release valve is opened to discharge the gas inside the airbag 1031, and the airbag 1031 is close to the inner wall of the dust ring 103 under the action of the tension spring elastic force to prevent the airbag 1031 from contacting the screw shaft 101 when the screw shaft 101 is working.

[0026] Reference Figure 2-5In this embodiment, the dust cleaning mechanism includes a connecting column 1023, a cleaning plate 104 and a cavity 1041. The connecting column 1023 is fixedly installed on one side of the connecting plate A 1021 and one side of the connecting plate B 1022, and the end of the connecting column 1023 is threadedly connected to a limiting nut. The lower side of the connecting plate A 1021 and the upper side of the connecting plate B 1022 are movably connected to the cleaning plate 104, and a connecting hole that fits with the connecting column 1023 is provided on one side of the cleaning plate 104. A cavity 1041 is provided inside, and bristles are provided on the inner wall of the cleaning plate 104. A plurality of through holes communicating with the cavity 1041 are provided on the inner wall of the cleaning plate 104. A connecting pipe communicating with the cavity 1041 is installed on the other side of the cleaning plate 104. Through grooves are provided below the connecting plate A 1021 and above the connecting plate B 1022 at positions corresponding to the connecting pipe. The cleaning plate 104 is provided in a semicircular arc shape, and the bristle path on the inner wall of the cleaning plate 104 is provided in a threaded shape that matches the screw shaft 101.

[0027] The screw shaft 101 rotates under the action of the servo motor 1011, and the threaded guide wheel 102, the connecting plate A1021 and the connecting plate B1022 make linear motion along the screw shaft 101. The bristles on the inner wall of the cleaning plate 104 brush the inside of the thread groove of the screw shaft 101 to remove the dust inside the thread groove of the screw shaft 101. The two cleaning plates 104 clean the thread grooves of the screw shaft 101 on both sides of the threaded guide wheel 102 respectively, so that no matter in which direction the threaded guide wheel 102 moves, the dust inside the thread groove of the screw shaft 101 can be cleaned before the threaded guide wheel 102 passes through the screw shaft 101.

[0028] Reference Figure 1-2 In this embodiment, a mounting groove 2 is embedded on one side of the mounting frame 1, and a dust collecting drawer 201 is slidably connected to the inside of the mounting groove 2 through a slide rail, a micro air pump 202 is embedded on one side of the mounting frame 1, and the inlet of the micro air pump 202 is connected to the pipeline of the mounting groove 2, and a filter is embedded on one side of the dust collecting drawer 201 corresponding to the inlet of the micro air pump 202, and the through grooves of the connecting plate A1021 and the connecting plate B1022 are connected to the pipeline of the mounting groove 2 through a dust suction pipe, and an opening is provided on the other side of the dust collecting drawer 201 corresponding to the inlet of the dust suction pipe;

[0029] The micro vacuum pump 202 works to extract the air from the mounting slot 2, the dust collecting drawer 201 and the cavity 1041, making them in a negative pressure state, and the dust swept off by the cleaning plate 104 is sucked into the dust collecting drawer 201 through the through holes on the inner wall of the cleaning plate 104 for collection, and the dust collecting drawer 201 is periodically pulled out to clean the dust inside.

[0030] Reference Figure 1-4In this embodiment, the servo motor 1011, the micro air pump 1032 and the micro vacuum pump 202 are all electrically connected to the external power supply through the switch panel, and drag chains are installed on both sides of the mounting frame 1, and the connecting wires of the dust suction tube and the micro air pump 1032 are installed inside the drag chain.

[0031] Working principle: First, the screw shaft 101 rotates under the action of the servo motor 1011, and the threaded guide wheel 102, the connecting plate A1021 and the connecting plate B1022 make a linear motion along the screw shaft 101. The bristles on the inner wall of the cleaning plate 104 brush the inside of the thread groove of the screw shaft 101 to sweep away the dust inside the thread groove of the screw shaft 101. Then the micro vacuum pump 202 works to extract the air inside the installation groove 2, the dust collecting drawer 201 and the cavity 1041 to make it in a negative pressure state. The dust swept away by the cleaning plate 104 is sucked into the dust collecting drawer 201 from the through hole on the inner wall of the cleaning plate 104 for collection. The two cleaning plates 104 clean the thread grooves of the screw shaft 101 on both sides of the threaded guide wheel 102 respectively. No matter which direction the threaded guide wheel 102 moves, the dust inside the threaded groove of the screw shaft 101 can be cleaned before the threaded guide wheel 102 passes through the screw shaft 101. Then, when the screw shaft 101 is stopped, the micro air pump 1032 fills a proper amount of gas into the airbag 1031, so that the airbag 1031 expands and is tightly clamped on the outer wall of the screw shaft 101. The two expanded annular airbags 1031 seal the openings on both sides of the threaded guide wheel 102 to prevent external dust from entering the threaded guide wheel 102 and contaminating the ball bearings and causing wear to the screw shaft 101, thereby ensuring the service life of the screw shaft 101 and the threaded guide wheel 102. Finally, the dust collection drawer 201 is regularly pulled out to clean the dust inside it.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A screw groove cleaning and dust prevention mechanism for a ball screw, comprising a mounting frame (1), characterized in that: A screw shaft (101) is rotatably connected to the top of the mounting frame (1) via a servo motor (1011), the screw shaft (101) is externally equipped with a threaded guide wheel (102), and the threaded guide wheel (102) is internally equipped with a ball and a ball retainer; The screw shaft (101) is provided with a dust-proof mechanism on the outside to prevent dust from entering the interior of the threaded guide wheel, and a dust-cleaning mechanism to remove dust from the interior of the screw groove; The dustproof mechanism comprises a connecting plate A (1021), a connecting plate B (1022), a dustproof ring (103), an air bag (1031) and a micro air pump (1032); A connecting plate A (1021) and a connecting plate B (1022) are fixedly installed on the upper and lower sides of the threaded guide wheel (102), respectively; dustproof rings (103) are symmetrically fixedly installed on both sides of the threaded guide wheel (102); an air bag (1031) is bonded to the inner wall of the dustproof ring (103), and a tension spring is installed inside the air bag (1031); a micro air pump (1032) is embedded and installed inside the connecting plate B (1022), and the micro air pump (1032) is connected to the air bag (1031) pipeline; an air release valve is installed above the dustproof ring (103), and the air release valve is connected to the air bag (1031) pipeline.

2. A ball screw groove cleaning and dust prevention mechanism according to claim 1, characterized in that: The airbag (1031) is arranged in a ring shape.

3. A ball screw groove cleaning and dust prevention mechanism according to claim 1, characterized in that: The dust cleaning mechanism comprises a connecting column (1023), a cleaning plate (104) and a cavity (1041); the connecting column (1023) is fixedly mounted on one side of the connecting plate A (1021) and one side of the connecting plate B (1022); the end of the connecting column (1023) is threadedly connected to a limiting nut; the cleaning plate (104) is movably connected to one side of the lower side of the connecting plate A (1021) and one side of the upper side of the connecting plate B (1022); and the cleaning plate (104) is provided on one side. A connecting hole is provided which matches with the connecting column (1023); a cavity (1041) is provided inside the cleaning plate (104); bristles are provided on the inner wall of the cleaning plate (104); a plurality of through holes communicating with the cavity (1041) are provided on the inner wall of the cleaning plate (104); a connecting pipe communicating with the cavity (1041) is installed on the other side of the cleaning plate (104); and through grooves are provided below the connecting plate A (1021) and above the connecting plate B (1022) at positions corresponding to the connecting pipes.

4. A ball screw groove cleaning and dust prevention mechanism as claimed in claim 3, characterized in that: The cleaning plate (104) is arranged in a semicircular arc shape, and the bristle path on the inner wall of the cleaning plate (104) is arranged in a threaded shape that fits with the screw shaft (101).

5. A ball screw groove cleaning and dust prevention mechanism according to claim 1, characterized in that: A mounting groove (2) is embedded in one side of the mounting frame (1), a dust collecting drawer (201) is slidably connected to the inside of the mounting groove (2) via a slide rail, a micro air pump (202) is embedded in one side of the mounting frame (1), and the inlet of the micro air pump (202) is connected to a pipeline of the mounting groove (2), a filter screen is embedded in one side of the dust collecting drawer (201) at a position corresponding to the inlet of the micro air pump (202), the through grooves of the connecting plate A (1021) and the connecting plate B (1022) are connected to the pipeline of the mounting groove (2) via a dust suction pipe, and an opening is provided at the other side of the dust collecting drawer (201) at a position corresponding to the inlet of the dust suction pipe.

Images