An automatic assembly machine for a motor output rotating shaft

Abstract

The application relates to the field of motor output rotating shaft assembly, in particular to an automatic motor output rotating shaft assembly machine, which comprises a machine tool, the top end of the machine tool is rotationally connected with a multi-station rotary disc, a plurality of bases for positioning rotating shafts are arranged in an annular array at the top end of the multi-station rotary disc, and a butter spraying mechanism is arranged at the top end of the machine tool. The storage box, the bottom cover and the cylinder body are arranged, the shaft center of the bottom cover is concentric with the rotating shaft at the corresponding position, the injection tube makes a circular motion around the rotating shaft axis, the space in the shell is compressed through the piston mechanism, the injection tube uniformly sprays butter along the edge track of the rotating shaft, on one hand, the lubricity between the fitting surface of the rotating shaft and the shaft sleeve is improved, on the other hand, after assembly is completed, the butter is filled in the tiny gap between the cover plate and the rotating shaft, a certain sealing barrier is formed, the moisture and corrosive substances in the external air are isolated, and the fitting surface is protected from corrosion.

Description

Technical Field

[0001] This invention relates to the field of motor output shaft assembly, and more particularly to an automated assembly machine for motor output shafts. Background Technology

[0002] With the continuous development of the motor industry, the scope and application of motor products are constantly expanding. Motor products are widely used in various fields such as metallurgy, power, petrochemical, coal, mining, building materials, papermaking, municipal engineering, water conservancy, shipbuilding, and port loading and unloading. The motor output shaft mechanism consists of three main components: a cover plate, a bushing, and the output shaft. The bushing needs to be installed into the mounting hole of the cover plate, and the output shaft is installed into the bushing, thus completing the assembly of the output shaft mechanism.

[0003] For example, the invention patent with publication number CN115890235A discloses an automated assembly equipment for a motor output shaft mechanism, which includes: a multi-station turntable mechanism, a cover plate vibratory feeder mechanism, a cover plate feeding mechanism, a bushing vibratory feeder mechanism, a bushing feeding mechanism, an output shaft vibratory feeder mechanism, an output shaft feeding mechanism, and a feeding mechanism surrounding the multi-station turntable mechanism.

[0004] The above case still has the following shortcomings:

[0005] For example, during assembly, in order to ensure lubrication between the mating surfaces of the shaft and the bushing, grease needs to be pre-applied to the shaft surface using a grease gun. Due to the high viscosity and poor fluidity of grease, traditional spraying methods make it difficult to form a uniform lubricating layer on the shaft surface, which can easily lead to insufficient lubrication of the mating surfaces.

[0006] To address these issues, this invention proposes an automated assembly machine for motor output shafts. Summary of the Invention

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an automated assembly machine for a motor output shaft, comprising a machine tool, a multi-station rotary table rotatably connected to the top of the machine tool, a plurality of bases arranged in a circular array on the top of the multi-station rotary table for positioning the shaft, and a grease spraying mechanism provided at the top of the machine tool, the grease spraying mechanism comprising:

[0008] A substrate is mounted on a machine tool. A storage box is fixedly connected to the end of the substrate. A bottom cover is rotatably and sealed to the bottom of the storage box. A drive motor is fixedly connected to the top of the storage box. The output shaft of the drive motor is fixedly connected to the axis of the bottom cover. The axis of the bottom cover is concentric with the rotating shaft at the corresponding position.

[0009] The cylindrical body is fixedly connected to the bottom end of the bottom cover. A connecting pipe is fixedly connected to the top end of the cylindrical body. The top end of the connecting pipe passes through the bottom cover and communicates with the inside of the storage box. A first one-way valve is installed inside the connecting pipe. An injection tube is fixedly connected to the bottom end of the cylindrical body. A second one-way valve is installed inside the injection tube. The bottom end of the injection tube is located above the mating surface between the rotating shaft and the bushing.

[0010] The housing has one end fixedly connected to the cylinder. A piston mechanism is installed inside the housing to regulate the internal air pressure, thereby enabling the injection of grease into the injection tube and the intake of grease into the cylinder.

[0011] Preferably, the piston mechanism includes:

[0012] A sealing piston, wherein the sealing piston is slidably connected within the housing;

[0013] A connecting rod is fixedly connected to a sealing piston, and a sliding pin is fixedly connected to the top end of the connecting rod. A first spring is fixedly connected between the sealing piston and the housing.

[0014] A guide groove is formed at the bottom end of the substrate. The starting end and the ending end of the guide groove are both located on one side of the center of the bottom cover. The starting end is far away from the center of the bottom cover, and the ending end is close to the center of the bottom cover. The starting end and the ending end are connected by a straight groove. The sliding pin is slidably connected in the guide groove.

[0015] Preferably, it also includes a fixing frame, which is fixedly connected to the top of the machine tool. A cylinder is fixedly connected to the top of the fixing frame, and the end of the telescopic rod of the cylinder is fixedly connected to the base plate. The base plate is slidably connected to the top of the fixing frame.

[0016] Preferred options also include:

[0017] Two connecting plates are fixedly connected to the side wall of the fixed frame, and the side wall of each connecting plate is provided with an inclined groove;

[0018] A connecting frame, one end of which is rotatably connected to a sealing cover, and the other end is symmetrically fixedly connected to two sliders. The two sliders are slidably connected in two inclined grooves, and a second spring is fixedly connected between the sliders and the inclined grooves.

[0019] The pushing component works in conjunction with the substrate to move the injection tube away from the rotating shaft. As the substrate moves the injection tube away from the rotating shaft, the pushing component pushes the connecting frame to move towards the substrate. Driven by the inclined groove, the connecting frame moves the sealing cap upward to seal the bottom end of the injection tube.

[0020] Preferably, the actuating component includes:

[0021] An arc-shaped push plate is fixedly connected to a connecting frame and is rotatably connected to a sealing cover.

[0022] An arc-shaped push block adapted to the arc-shaped push plate is fixedly connected to the outer wall of the injection tube.

[0023] Preferred options also include:

[0024] A scraper, which is fixedly connected inside the sealing cover, and a flexible scraper strip is fixedly connected to the top of the scraper;

[0025] A rotary drive mechanism is used to drive the sealing cap to rotate, causing the scraper to rotate and clean the residual grease at the bottom of the injection tube through a flexible scraper.

[0026] Preferably, a heating chamber is provided inside the sealing cover.

[0027] Preferably, a collection box is fixed to the side wall of the fixing frame, and a conduit is rotatably connected to the center of the bottom end of the sealing cover. The other end of the conduit is connected to the collection box for guiding the liquefied butter into the collection box.

[0028] Preferably, the rotary drive mechanism includes:

[0029] A rack, which is fixedly connected to the side wall of the fixing frame;

[0030] The gear is fixedly sleeved on the surface of the sealing cover.

[0031] Preferably, a permanent magnet is fixedly connected to the end of the connecting rod, and an induction electromagnet is fixedly connected to the bottom of the substrate at the position corresponding to the permanent magnet.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] I. This invention, by setting up a storage box, a bottom cover, and a cylinder, ensures that the bottom cover's axis is concentric with the corresponding rotating shaft, causing the injection tube to rotate around the shaft's axis. During this rotation, the piston mechanism compresses the space inside the housing, increasing the pressure within both the housing and the cylinder. At this point, the first one-way valve closes under pressure, sealing the connecting pipe and preventing grease from entering the storage box. The second one-way valve opens under pressure, allowing the injection tube to evenly spray grease along the edge of the rotating shaft. After spraying, the piston mechanism reduces the air pressure inside the housing, decreasing the pressure within the cylinder. The first one-way valve opens under suction, releasing the seal on the connecting pipe, while the second one-way valve closes under suction, sealing the injection tube and preventing grease discharge. This replenishes the grease in the cylinder, preparing for the next injection.

[0034] II. This invention, by setting a sealing piston, a connecting rod, and a guide groove, allows the sliding pin to slide along the guide groove during the rotation of the cylinder and shell driven by the bottom cover. The sliding pin starts from the beginning of the guide groove and then rotates to the end. Since the beginning is far from the center of the bottom cover and the end is close to the center of the bottom cover, the sliding pin drives the connecting rod to move towards the center of the bottom cover as it slides along the guide groove. This causes the sealing piston to compress the space inside the shell, and the injection tube injects grease evenly onto the surface of the rotating shaft. When the sliding pin moves to the end of the guide groove, under the action of the first spring, the sliding pin moves along the straight groove to the beginning of the guide groove, automatically replenishing the grease in the cylinder and preparing for the next grease injection.

[0035] Third, after the grease is injected, the present invention drives the base plate to move by a cylinder, so that the injection tube is away from the rotating shaft. During the movement of the injection tube, the arc-shaped push block squeezes and pushes the arc-shaped push plate, so that the connecting frame moves and the slider moves along the inclined groove. Driven by the inclined groove, the connecting frame drives the sealing cover to move upward, so that the sealing cover is inserted into the bottom end of the injection tube, sealing the bottom end of the injection tube and preventing the grease residue at the bottom end of the injection tube from dripping onto the machine tool and causing contamination.

[0036] IV. By setting up a scraper, gears and racks, the gears and racks mesh during the process of the connecting frame driving the sealing cover to move towards the fixed frame, driving the sealing cover to rotate, causing the scraper to rotate, and cleaning the residual grease at the bottom of the injection tube with a flexible scraper, thus avoiding blockage at the bottom of the injection tube.

[0037] V. This invention, by setting up a heating chamber and a collection box, heats the grease inside the sealed cap, melting the grease at the bottom of the injection tube and on the scraper. The liquefied grease is then guided through a conduit to the collection box for recycling and reuse. Attached Figure Description

[0038] Figure 1 The overall structure of the present invention Figure 1 ;

[0039] Figure 2 The overall structure of the present invention Figure 2 ;

[0040] Figure 3 This is a schematic diagram showing the connection between the substrate and the storage box of the present invention;

[0041] Figure 4 This is a schematic diagram showing the connection between the substrate and the guide groove of the present invention;

[0042] Figure 5 This is a schematic diagram showing the connection between the cylinder and the shell in this invention;

[0043] Figure 6 This is a schematic diagram showing the connection between the sealing cap and the conduit in this invention;

[0044] Figure 7 This is a cross-sectional view of the sealing cap in this invention.

[0045] In the diagram: 1. Machine tool; 2. Multi-station rotary table; 3. Base; 4. Rotary shaft feeding mechanism; 5. Grease spraying mechanism; 6. Cover plate assembly mechanism; 7. Shaft assembly mechanism; 8. Rotary shaft unloading mechanism; 9. Base plate; 9. Guide groove 901; Straight groove 902; Storage box 10; Bottom cover 11; Drive motor 12; Cylinder 13; Connecting pipe 14; First one-way valve 15; Injection tube 16; Second one-way valve 17; Housing 18; Sealing piston 19; Connecting rod 20; Sliding pin 21; First spring 22; Fixing frame 23; Cylinder 24; Connecting plate 25; Inclined groove 26; Connecting frame 27; Slider 28; Second spring 29; Arc-shaped push plate 30; Arc-shaped push block 31; Sealing cover 32; Heating chamber 3201; Scraper 3202; Flexible scraper 3203; Collection box 33; Conduit 34; Rack 35; Gear 36; Permanent magnet 37; Induction electromagnet 38. Detailed Implementation

[0046] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0047] like Figures 1 to 7 An automated assembly machine for a motor output shaft is shown, including a machine tool 1. A multi-station rotary disk 2 is rotatably connected to the top of the machine tool 1. Several bases 3 are arranged in a ring array on the top of the multi-station rotary disk 2 for positioning the shaft.

[0048] The machine tool 1 is equipped with a rotating shaft feeding mechanism 4, a grease spraying mechanism 5, a cover plate assembly mechanism 6, a shaft assembly mechanism 7, a rotating shaft unloading mechanism 8, which are arranged sequentially around the multi-station rotary disk 2.

[0049] The control motor inside machine tool 1 drives the multi-station rotary table 2 to rotate periodically. After each rotation of the multi-station rotary table 2, the spindle loading mechanism 4, the grease spraying mechanism 5, the cover plate assembly mechanism 6, the shaft assembly mechanism 7, and the spindle unloading mechanism 8 perform the following tasks respectively:

[0050] The rotating shaft feeding mechanism 4 picks up the rotating shaft and places it into the base 3 at the corresponding position. The grease spraying mechanism 5 sprays grease onto the rotating shaft at the corresponding position. The cover plate assembly mechanism 6 picks up the cover plate and fits it onto the outer wall of the rotating shaft. The shaft sleeve assembly mechanism 7 picks up the shaft sleeve and fits it onto the rotating shaft. Finally, the rotating shaft unloading mechanism 8 removes the assembled output shaft from the base 3.

[0051] The butter spraying mechanism 5 includes:

[0052] The substrate 9 is mounted on the machine tool 1. A storage box 10 is fixedly connected to the end of the substrate 9. A bottom cover 11 is rotatably connected to the bottom of the storage box 10. A drive motor 12 is fixedly connected to the top of the storage box 10. The output shaft of the drive motor 12 is fixedly connected to the axis of the bottom cover 11. The axis of the bottom cover 11 is concentric with the rotating shaft at the corresponding position.

[0053] The cylinder 13 is fixedly connected to the bottom end of the bottom cover 11. The top end of the cylinder 13 is fixedly connected to the connecting pipe 14. The top end of the connecting pipe 14 passes through the bottom cover 11 and communicates with the storage box 10. A first one-way valve 15 is provided in the connecting pipe 14. An injection tube 16 is fixedly connected to the bottom end of the cylinder 13. A second one-way valve 17 is provided in the injection tube 16. The bottom end of the injection tube 16 is located above the mating surface between the rotating shaft and the bushing.

[0054] The housing 18 is fixedly connected to the cylinder 13 at one end. A piston mechanism is provided inside the housing 18 to adjust the air pressure inside the housing 18, so as to realize the injection tube 16 injecting butter and the cylinder 13 drawing in butter.

[0055] In existing technology, to ensure lubrication between the mating surfaces of the shaft and the bushing during assembly, grease needs to be pre-applied to the shaft surface using a grease gun. However, due to the high viscosity and poor flowability of grease, traditional spraying methods struggle to form a uniform lubricating layer on the shaft surface, easily leading to insufficient lubrication of the mating surfaces. This technical solution can solve the above problems. The specific operation is as follows:

[0056] When grease needs to be injected into the rotating shaft, the drive motor 12 is started, causing the bottom cover 11 to rotate. The cylinder 13 drives the housing 18 to rotate. Since the axis of the bottom cover 11 is concentric with the rotating shaft at the corresponding position, the injection tube 16 makes a circular motion around the axis of the rotating shaft.

[0057] During the circular motion of the injection tube 16 around the axis of rotation, the piston mechanism compresses the space inside the housing 18, increasing the pressure inside the housing 18 and the cylinder 13. At this time, the first one-way valve 15 closes under pressure, sealing the connecting pipe 14 to prevent grease from entering the storage tank 10 inside the cylinder 13. The second one-way valve 17 opens under pressure, allowing the injection tube 16 to spray grease evenly along the edge of the rotating shaft. This improves the lubrication between the rotating shaft and the bushing mating surface. After assembly, the grease fills the tiny gaps between the cover plate and the rotating shaft, forming a certain sealing barrier to help isolate moisture and corrosive substances in the external air and protect the mating surfaces from corrosion.

[0058] After the drive motor 12 drives the bottom end to rotate one revolution and return to the initial position, the drive motor 12 is turned off. The piston mechanism reduces the air pressure inside the housing 18, which in turn reduces the air pressure inside the cylinder 13. The first one-way valve 15 opens under the action of suction, canceling the seal on the connecting pipe 14. The second one-way valve 17 closes under the action of suction, sealing the injection tube 16 to prevent grease from being discharged. This allows the grease to be replenished in the cylinder 13, preparing for the next grease injection.

[0059] Furthermore, the piston mechanism includes a sealing piston 19, which is slidably connected to the housing 18; a connecting rod 20, which is fixedly connected to the sealing piston 19, and a sliding pin 21 is fixedly connected to the top of the connecting rod 20; a first spring 22 is fixedly connected between the sealing piston 19 and the housing 18.

[0060] The guide groove 901 is formed at the bottom end of the substrate 9. The starting end and the ending end of the guide groove 901 are both located on one side of the center of the bottom cover 11. The starting end is far away from the center of the bottom cover 11, and the ending end is close to the center of the bottom cover 11. The starting end and the ending end are connected by a straight groove 902. The sliding pin 21 is slidably connected in the guide groove 901.

[0061] Specifically, by setting the sealing piston 19, connecting rod 20, and guide groove 901, during the rotation of the cylinder 13 and housing 18 driven by the bottom cover 11, the sliding pin 21 slides along the guide groove 901. The sliding pin 21 starts from the starting end of the guide groove 901 and then rotates to the ending end. Since the starting end is far from the center of the bottom cover 11 and the ending end is close to the center of the bottom cover 11, the sliding pin 21 drives the connecting rod 20 to move towards the center of the bottom cover 11 during the sliding along the guide groove 901, so that the sealing piston 19 compresses the space inside the housing 18. Under the above principle, the injection tube 16 injects grease evenly onto the surface of the rotating shaft. When the sliding pin 21 moves to the ending end of the guide groove 901, under the action of the first spring 22, the sliding pin 21 moves along the straight groove 902 to the starting end of the guide groove 901. Under the above principle, the grease in the cylinder 13 is automatically replenished to prepare for the next grease injection.

[0062] As a further embodiment of the present invention, it also includes a fixing frame 23, which is fixedly connected to the top of the machine tool 1. A cylinder 24 is fixedly connected to the top of the fixing frame 23. The end of the telescopic rod of the cylinder 24 is fixedly connected to the base plate 9. The base plate 9 is slidably connected to the top of the fixing frame 23.

[0063] Specifically, after the grease is injected, the base plate 9 is moved by the cylinder 24, so that the injection tube 16 is away from the rotating shaft to avoid interference with the rotation of the multi-station rotating disk 2. When the multi-station rotating disk 2 moves the next rotating shaft to the position of the grease spraying mechanism 5, the base plate 9 is moved by the cylinder 24, so that the injection tube 16 is moved above the rotating shaft. Then, the grease is sprayed onto the surface of the rotating shaft according to the above operation.

[0064] As a further embodiment of the present invention, it also includes:

[0065] Two connecting plates 25 are fixedly connected to the side wall of the fixed frame 23, and the side wall of each connecting plate 25 is provided with an inclined groove 26.

[0066] A connecting frame 27 is rotatably connected to a sealing cover 32 at one end, and a slider 28 is symmetrically fixedly connected to both sides of the other end. The two sliders 28 are slidably connected in two inclined grooves 26 respectively, and a second spring 29 is fixedly connected between the sliders 28 and the inclined grooves 26.

[0067] The push component moves in conjunction with the substrate 9. As the substrate 9 moves the injection tube 16 away from the rotating shaft, the push component pushes the connecting frame 27 toward the substrate 9. Driven by the inclined groove 26, the connecting frame 27 moves the sealing cover 32 upward to seal the bottom end of the injection tube 16.

[0068] The pushing assembly includes an arc-shaped pushing plate 30, which is fixedly connected to the connecting frame 27 and rotatably connected to the sealing cap 32; an arc-shaped pushing block 31 adapted to the arc-shaped pushing plate 30 is fixedly connected to the outer wall of the injection tube 16.

[0069] Specifically, after the grease is injected, the base plate 9 is moved by the cylinder 24, so that the injection tube 16 is away from the rotating shaft. During the movement of the injection tube 16, the arc-shaped push block 31 squeezes and pushes the arc-shaped push plate 30, so that the connecting frame 27 moves and the slider 28 moves along the inclined groove 26. Driven by the inclined groove 26, the connecting frame 27 drives the sealing cover 32 to move upward, so that the sealing cover 32 is inserted into the bottom end of the injection tube 16, sealing the bottom end of the injection tube 16 and preventing the grease residue at the bottom end of the injection tube 16 from dripping onto the machine tool 1 and causing contamination.

[0070] When the multi-station rotary table 2 moves the next rotating shaft to the position of the grease spraying mechanism 5, the cylinder 24 drives the base plate 9 to move, so that the injection tube 16 moves above the rotating shaft. During the movement of the injection tube 16, the arc-shaped push block 31 cancels the push on the arc-shaped push plate 30. Under the action of the second spring 29, the connecting frame 27 drives the slider 28 to move. Under the drive of the inclined groove 26, the connecting frame 27 drives the sealing cover 32 to move downward, canceling the seal on the injection tube 16.

[0071] As a further embodiment of the present invention, it also includes:

[0072] Scraper 3202 is fixedly connected inside the sealing cover 32, and a flexible scraper 3203 is fixedly connected to the top of scraper 3202;

[0073] A rotary drive mechanism is used to drive the sealing cap 32 to rotate, causing the scraper 3202 to rotate, and the flexible scraper 3203 to clean the grease residue at the bottom of the injection tube 16.

[0074] The rotary drive mechanism includes a rack 35, which is fixedly connected to the side wall of the fixed frame 23; and a gear 36, which is fixedly sleeved on the surface of the sealing cover 32.

[0075] Specifically, by setting up a scraper 3202, a gear 36, and a rack 35, during the process of the connecting frame 27 driving the sealing cover 32 to move towards the fixed frame 23, the gear 36 and the rack 35 mesh, driving the sealing cover 32 to rotate, causing the scraper 3202 to rotate, and cleaning the residual grease at the bottom of the injection tube 16 through the flexible scraper 3203, thus avoiding blockage at the bottom of the injection tube 16.

[0076] It should be noted that the length of rack 35 is greater than the vertical stroke of sealing cover 32, ensuring that gear 36 is effectively engaged throughout the entire stroke.

[0077] As a further embodiment of the present invention, a heating cavity 3201 is provided inside the sealing cover 32;

[0078] A collection box 33 is fixed to the side wall of the fixed frame 23. A conduit 34 is rotatably connected to the center of the bottom end of the sealing cover 32. The other end of the conduit 34 is connected to the collection box 33 to guide the liquefied butter into the collection box 33.

[0079] Specifically, by setting up a heating chamber 3201 (temperature range of 35-40 degrees Celsius, which ensures that the butter is liquefied and does not degrade) and a collection box 33, the butter inside the sealing cap 32 is heated to melt the butter at the bottom of the injection tube 16 and on the scraper 3202. Then, the liquefied butter is guided to the collection box 33 through the conduit 34 for recycling and utilization.

[0080] As a further embodiment of the present invention, a permanent magnet 37 is fixedly connected to the end of the connecting rod 20, and an induction electromagnet 38 is fixedly connected to the bottom of the substrate 9 at the position corresponding to the permanent magnet 37.

[0081] Specifically, by setting a permanent magnet 37 and an induction battery iron, when the cylinder 24 drives the base plate 9 to move, causing the injection tube 16 to move away from the rotating shaft, the induction electromagnet 38 generates a magnetic force different from that of the permanent magnet 37. Under the action of magnetic attraction, the sealing piston 19 and the sliding pin 21 are reset to the designated position.

[0082] The working principle of this invention is as follows:

[0083] The control motor inside machine tool 1 drives the multi-station rotary table 2 to rotate periodically. After each rotation of the multi-station rotary table 2, the spindle loading mechanism 4, the grease spraying mechanism 5, the cover plate assembly mechanism 6, the shaft assembly mechanism 7, and the spindle unloading mechanism 8 perform the following tasks respectively:

[0084] The rotating shaft feeding mechanism 4 picks up the rotating shaft and places it into the base 3 at the corresponding position. The grease spraying mechanism 5 sprays grease onto the rotating shaft at the corresponding position. The cover plate assembly mechanism 6 picks up the cover plate and fits it onto the outer wall of the rotating shaft. The shaft sleeve assembly mechanism 7 picks up the shaft sleeve and fits it onto the rotating shaft. Finally, the rotating shaft unloading mechanism 8 removes the assembled output shaft from the base 3.

[0085] The working principle of the grease spraying mechanism 5 is as follows:

[0086] First, the base plate 9 is moved by the cylinder 24, so that the injection tube 16 moves above the rotating shaft. During the movement of the injection tube 16, the sealing cap 32 is separated from the injection tube 16 by the action of the second spring 29.

[0087] Start the drive motor 12 to make the bottom cover 11 rotate, and the cylinder 13 drives the housing 18 to rotate. Since the axis of the bottom cover 11 is concentric with the corresponding rotating shaft, the injection tube 16 makes a circular motion around the axis of rotation. The sliding pin 21 slides along the guide groove 901. The sliding pin 21 starts from the starting end of the guide groove 901 and then rotates to the ending end. Since the starting end is far away from the center of the bottom cover 11 and the ending end is close to the center of the bottom cover 11, the sliding pin 21 slides along the guide groove 901, and the drive connecting rod 20 moves towards the center of the bottom cover 11, so that the sealing piston 19 compresses the space inside the housing 18, so that the pressure inside the housing 18 increases and the pressure inside the cylinder 13 increases. At this time, the first one-way valve 15 closes under the action of pressure, sealing the connecting pipe 14 to prevent the grease inside the cylinder 13 from entering the storage box 10. The second one-way valve 17 opens under the action of pressure, so that the injection tube 16 sprays the grease evenly along the edge trajectory of the rotating shaft.

[0088] When the sliding pin 21 moves to the end of the guide groove 901, under the action of the first spring 22, the sliding pin 21 moves along the straight groove 902 to the beginning of the guide groove 901. The sealing piston 19 is reset, which reduces the air pressure in the cylinder 13. The first one-way valve 15 opens under the action of suction, canceling the seal on the connecting pipe 14. The second one-way valve 17 closes under the action of suction, sealing the injection tube 16 to prevent grease from being discharged, thereby replenishing the grease in the cylinder 13 and preparing for the next grease injection.

[0089] After the butter is injected, the injection tube 16 moves away from the rotating shaft. The arc-shaped push block 31 squeezes and pushes the arc-shaped push plate 30, causing the connecting frame 27 to move. The slider 28 moves along the inclined groove 26. Driven by the inclined groove 26, the connecting frame 27 drives the sealing cover 32 to move upward, so that the sealing cover 32 is inserted into the bottom end of the injection tube 16 to seal the bottom end of the injection tube 16.

[0090] During the process of the connecting frame 27 driving the sealing cover 32 to move towards the fixed frame 23, the gear 36 meshes with the rack 35, driving the sealing cover 32 to rotate, causing the scraper 3202 to rotate, and cleaning the grease remaining at the bottom of the injection tube 16 through the scraper.

[0091] The scraped butter is heated in the heating chamber 3201 to melt the butter at the bottom of the injection tube 16 and on the scraper 3202. The liquefied butter is then guided to the collection box 33 through the conduit 34 for recycling and reuse.

[0092] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. An automated assembly machine for a motor output shaft, comprising a machine tool (1), wherein a multi-station rotary disk (2) is rotatably connected to the top of the machine tool (1), and a plurality of bases (3) are arranged in a circular array at the top of the multi-station rotary disk (2) for positioning the shaft, characterized in that, The top of the machine tool (1) is provided with a grease spraying mechanism (5), which includes: A substrate (9) is mounted on a machine tool (1). A storage box (10) is fixedly connected to the end of the substrate (9). A bottom cover (11) is rotatably connected to the bottom of the storage box (10). A drive motor (12) is fixedly connected to the top of the storage box (10). The output shaft of the drive motor (12) is fixedly connected to the axis of the bottom cover (11). The axis of the bottom cover (11) is concentric with the rotating shaft at the corresponding position. A cylindrical body (13) is fixedly connected to the bottom end of the bottom cover (11). A connecting pipe (14) is fixedly connected to the top end of the cylindrical body (13). The top end of the connecting pipe (14) passes through the bottom cover (11) and communicates with the storage box (10). A first one-way valve (15) is provided inside the connecting pipe (14). An injection tube (16) is fixedly connected to the bottom end of the cylindrical body (13). A second one-way valve (17) is provided inside the injection tube (16). The bottom end of the injection tube (16) is located above the mating surface between the rotating shaft and the bushing. The housing (18) is fixedly connected to the cylinder (13) at one end. A piston mechanism is provided inside the housing (18) to adjust the air pressure inside the housing (18) so that the injection tube (16) injects butter and the cylinder (13) draws in butter. The piston mechanism includes a sealing piston (19) which is slidably connected to the housing (18); A connecting rod (20) is fixedly connected to a sealing piston (19). A sliding pin (21) is fixedly connected to the top end of the connecting rod (20). A first spring (22) is fixedly connected between the sealing piston (19) and the housing (18). The guide groove (901) is formed at the bottom of the substrate (9). The starting end and the ending end of the guide groove (901) are both located on one side of the center of the bottom cover (11). The starting end is far away from the center of the bottom cover (11), and the ending end is close to the center of the bottom cover (11). The starting end and the ending end are connected by a straight groove (902). The sliding pin (21) is slidably connected in the guide groove (901). It also includes a fixed frame (23), which is fixedly connected to the top of the machine tool (1). A cylinder (24) is fixedly connected to the top of the fixed frame (23). The end of the telescopic rod of the cylinder (24) is fixedly connected to the base plate (9). The base plate (9) is slidably connected to the top of the fixed frame (23). It also includes two connecting plates (25), which are fixedly connected to the side wall of the fixing frame (23), and the side wall of each of the two connecting plates (25) is provided with a slanted groove (26). A connecting frame (27) is rotatably connected to a sealing cover (32) at one end, and a slider (28) is symmetrically fixedly connected to both sides of the other end. The two sliders (28) are slidably connected in two inclined grooves (26) respectively, and a second spring (29) is fixedly connected between the slider (28) and the inclined groove (26). The pushing component is in conjunction with the substrate (9) to move and cooperate. As the substrate (9) moves the injection tube (16) away from the rotating shaft, the pushing component pushes the connecting frame (27) to move towards the substrate (9). Under the drive of the inclined groove (26), the connecting frame (27) moves the sealing cap (32) upward to seal the bottom end of the injection tube (16). The pushing assembly includes an arc-shaped pushing plate (30), which is fixedly connected to the connecting frame (27) and is rotatably connected to the sealing cover (32); The outer wall of the injection tube (16) is fixedly connected to an arc-shaped push block (31) that is compatible with the arc-shaped push plate (30). It also includes a scraper (3202), which is fixedly connected inside the sealing cover (32), and a flexible scraper strip (3203) is fixedly connected to the top of the scraper (3202). A rotary drive mechanism is used to drive the sealing cap (32) to rotate, so that the scraper (3202) rotates and cleans the grease residue at the bottom of the injection tube (16) by a flexible scraper (3203).

2. The automated assembly machine for a motor output shaft according to claim 1, characterized in that, A heating chamber (3201) is provided inside the sealing cover (32).

3. An automated assembly machine for a motor output shaft according to claim 2, characterized in that, The side wall of the fixed frame (23) is fixed with a collection box (33), and a conduit (34) is rotatably connected to the bottom center of the sealing cover (32). The other end of the conduit (34) is connected to the collection box (33) to guide the liquefied butter into the collection box (33).

4. An automated assembly machine for a motor output shaft according to claim 3, characterized in that, The rotary drive mechanism includes: A rack (35) is fixedly connected to the side wall of the fixing frame (23); Gear (36), which is fixedly sleeved on the surface of the sealing cover (32).

5. An automated assembly machine for a motor output shaft according to claim 4, characterized in that, A permanent magnet (37) is fixedly connected to the end of the connecting rod (20), and an induction electromagnet (38) is fixedly connected to the bottom of the substrate (9) at the position corresponding to the permanent magnet (37).

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