Ball screening device for bearing production

Abstract

The ball screening device for bearing production comprises a supporting chassis and a screening cylinder, an upper screening plate and a lower screening plate which are the same in structure are fixedly installed in the middle of an inner cavity of the screening cylinder, a main body of the upper screening plate is arranged to be a bearing bottom plate, and the upper surface of the bearing bottom plate is fixedly connected with a rubber top plate; two groups of screening holes are formed in the lower surface of the bearing bottom plate, the screening holes penetrate through the bearing bottom plate and the rubber top plate, guide chamfers are formed in the tops and the bottoms of the inner walls of the screening holes, two guide ring grooves are formed in the upper surface of the rubber top plate, and the two guide ring grooves communicate with the two groups of screening holes correspondingly. According to the steel ball sorting device, the upper sorting plate and the lower sorting plate are matched, steel balls are divided into three size standard batches, the steel balls meeting the size standard can be quickly and directly screened out, sorting speed is high, the effect is good, sorting can be continuously conducted, and secondary sorting does not need to be conducted on the sorted steel balls.

Description

Technical Field

[0001] This utility model relates to the field of bearing manufacturing technology, and in particular to a ball screening device for bearing manufacturing. Background Technology

[0002] In existing technology, bearings are an important component in modern mechanical equipment. Their main function is to support rotating mechanical parts, reduce the coefficient of friction during movement, and ensure rotational accuracy. They typically consist of four parts: an inner ring, an outer ring, rolling elements, and a cage. The balls of ball bearings are produced through cold forming or hot forming, followed by removal of mold overflow, heat treatment, and fine grinding to final shape. The formed balls then need to be size-screened to ensure that the balls assembled in a bearing are within the standard tolerance range.

[0003] A search revealed a Chinese patent application with patent number 202220464475.6, which discloses a ball bearing screening device for bearing production. This device uses a sieve plate to screen a large number of balls. The balls screened by this device can only meet one standard, such as the lower limit or upper limit of the diameter. A second screening is required to obtain balls that meet the standard. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a ball bearing screening device for bearing production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A ball bearing screening device for bearing production includes: a supporting base and a screening cylinder. An upper screening plate and a lower screening plate with identical structures are fixedly installed in the middle of the inner cavity of the screening cylinder. The main body of the upper screening plate is configured as a supporting base plate. A rubber top plate is fixedly connected to the upper surface of the supporting base plate, and two sets of screening holes are opened on the lower surface of the supporting base plate. The screening holes penetrate the supporting base plate and the rubber top plate. Guide chamfers are opened at the top and bottom of the inner wall of the screening holes. Two guide ring grooves are opened on the upper surface of the rubber top plate, and the two guide ring grooves are respectively connected to the two sets of screening holes. From bottom to top, three discharge pipes are fixedly connected to the outer wall of one side of the screening cylinder: a discharge pipe one for discharging steel balls smaller than the standard size, a discharge pipe two for discharging steel balls conforming to the standard size, and a discharge pipe three for discharging steel balls larger than the standard size.

[0007] As a further improvement of this utility model: both the second and third discharge pipes have a sealing plate fixedly inserted at one end of their front faces near the screening cylinder, and a ball bearing feed port is fixedly connected to the top of the other side of the screening cylinder.

[0008] As a further embodiment of this utility model: the upper surface of the supporting chassis is integrally formed with a positioning block with an inclined upper surface, and a protective rubber pad is fixedly connected to the upper surface of the positioning block.

[0009] As a further improvement of this utility model: the lower surface of the supporting chassis is provided with an installation groove, the top wall of the installation groove is provided with a diversion groove, and the top wall of the diversion groove is provided with a plurality of air outlet holes at equal intervals.

[0010] As a further improvement of this utility model: a dust-proof mesh plate is fixedly installed on the lower surface of the supporting chassis, and a high-flow fan is fixedly installed inside the mounting groove.

[0011] As a further improvement of this utility model: a motor base is fixedly installed at the top of the screening cylinder, and a drive motor is fixedly installed at the top of the motor base.

[0012] As a further embodiment of this utility model: a bevel gear one is fixedly mounted on the output shaft of the drive motor, and a bevel gear two is meshed with one side of the bevel gear one.

[0013] As a further embodiment of this utility model: a transmission shaft is fixedly installed at the bottom end of the second bevel gear, and two mounting brackets are fixedly installed on the lower outer wall of the transmission shaft, with a rubber stirring rod provided on one side of each mounting bracket.

[0014] Compared with the prior art, this utility model provides a ball screening device for bearing production, which has the following advantages:

[0015] 1. This ball bearing screening device, through the cooperation of the upper and lower screening plates, divides steel balls into three standard batches of sizes. It can quickly and directly screen out steel balls that meet the size standards. The sorting speed is fast, the effect is good, and it can be carried out continuously without the need for a second sorting of the sorted steel balls.

[0016] 2. This ball screening device, through the combination of a high-flow fan and a guide chamfer at the bottom of the screening holes, reduces the occurrence of steel ball blockage inside the screening holes, improves the overall performance of the device, and ensures the sorting efficiency of steel balls.

[0017] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the overall assembly of this utility model;

[0019] Figure 2 This is a partial cross-sectional view of the overall assembly of this utility model.

[0020] Figure 3 This utility model Figure 2 A magnified structural diagram of point A in the middle.

[0021] In the diagram: 1. Support chassis; 2. Support leg; 3. Connecting ring seat; 4. Screening cylinder; 5. Discharge pipe one; 6. Discharge pipe two; 7. Discharge pipe three; 8. Sealing plate; 9. Ball bearing inlet; 10. Motor base; 11. Drive motor; 12. Bevel gear one; 13. Bevel gear two; 14. Transmission shaft; 15. Limiting sleeve; 16. Upper screening plate; 161. Bearing base plate; 162. Rubber top plate; 163. Screening hole; 164. Guide chamfer; 165. Guide ring groove; 17. Lower screening plate; 18. Mounting groove; 19. High-flow fan; 20. Dust shield; 21. Diversion groove; 22. Air outlet; 23. Protective rubber pad; 24. Mounting connector; 25. Connecting block; 26. Rubber stirring rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] A ball screening device for bearing production, such as Figures 1 to 3 As shown, it includes: a support base 1 and a screening cylinder 4. A connecting ring seat 3 is welded to the bottom of the outer wall of the screening cylinder 4. The connecting ring seat 3 is fixedly connected to the support base 1 by bolts. Multiple support legs 2 are welded at equal intervals on the lower surface of the support base 1.

[0024] The inner cavity of the screening cylinder 4 is fixedly installed with an upper screening plate 16 and a lower screening plate 17 of the same structure. The upper screening plate 16 is used to screen steel balls larger than the standard size, and the lower screening plate 17 is used to screen steel balls that meet the standard size. Steel balls smaller than the standard size pass through the lower screening plate 17 and are collected.

[0025] The main body of the upper screening plate 16 is a supporting base plate 161. A rubber top plate 162 is fixedly connected to the upper surface of the supporting base plate 161. The rubber top plate 162 is made of hard rubber and can absorb the potential energy generated by the falling steel balls, but will not be deformed by the steel balls.

[0026] The lower surface of the supporting base plate 161 is provided with two sets of sieve holes 163. Each set of sieve holes 163 is equidistant from the axis of the supporting base plate 161. The diameter of the sieve holes 163 of the lower sieve plate 17 is smaller than the diameter of the sieve holes 163 of the upper sieve plate 16. For example, if the standard size of a steel ball is 50±0.04 mm, then the diameter of the sieve holes 163 of the upper sieve plate 16 is 50.04 mm, and the diameter of the sieve holes 163 of the lower sieve plate 17 is 49.96 mm.

[0027] The sieve hole 163 penetrates the supporting bottom plate 161 and the rubber top plate 162, and the top and bottom of the inner wall of the sieve hole 163 are provided with guide chamfers 164. The upper guide chamfer 164 facilitates the entry of steel balls into the sieve hole 163.

[0028] Two guide ring grooves 165 are provided on the upper surface of the rubber top plate 162. The two guide ring grooves 165 are connected to the two sets of sieve holes 163 respectively. The bottom wall of the guide ring groove 165 is set as an arc surface to facilitate the steel ball to roll in the direction of the sieve hole 163.

[0029] The upper surface of the supporting chassis 1 is integrally formed with a positioning block that is inclined on the upper surface. A protective rubber pad 23 is fixedly connected to the upper surface of the positioning block. The positioning block is inserted into the screening cylinder 4 and collects steel balls smaller than the standard size through the protective rubber pad 23.

[0030] The outer wall of one side of the screening cylinder 4 is fixedly connected from bottom to top with a discharge pipe 5 for discharging steel balls smaller than the standard size, a discharge pipe 6 for discharging steel balls that meet the standard size, and a discharge pipe 7 for discharging steel balls larger than the standard size.

[0031] The inner wall of the bottom end of discharge pipe 1 5, near the screening cylinder 4, is at the same height as the lower end of the upper surface of the protective rubber pad 23; the inner wall of the bottom end of discharge pipe 2 6, near the screening cylinder 4, is at the same height as the upper surface of the lower sieve plate 17; the inner wall of the bottom end of discharge pipe 3 7, near the screening cylinder 4, is at the same height as the upper surface of the upper sieve plate 16.

[0032] Both discharge pipe 2 6 and discharge pipe 3 7 have a sealing plate 8 fixedly inserted at the end of the front of the screening cylinder 4 to prevent steel balls from entering discharge pipe 2 6 and discharge pipe 3 7 during screening. The top of the other side of the screening cylinder 4 is fixedly connected to a ball feed inlet 9, through which steel balls enter the interior of the screening cylinder 4.

[0033] The lower surface of the supporting chassis 1 is provided with an installation groove 18, the top wall of the installation groove 18 is provided with a diversion groove 21, and the top wall of the diversion groove 21 is provided with multiple air outlets 22 at equal intervals, the air outlets 22 penetrating the protective rubber pad 23.

[0034] A dust-proof mesh plate 20 is fixedly installed on the lower surface of the supporting chassis 1. A high-flow fan 19 is fixedly installed inside the mounting groove 18. The high-flow fan 19 draws air from the outside and introduces the air into the screening cylinder 4 through the air outlet 22, so that the air flows upward through the screening hole 163, reducing the possibility of steel balls clogging the screening hole 163.

[0035] A motor base 10 is fixedly installed at the top of the screening cylinder 4, a drive motor 11 is fixedly installed at the top of the motor base 10, a bevel gear 12 is fixedly installed on the output shaft of the drive motor 11, and a bevel gear 13 is meshed with one side of the bevel gear 12.

[0036] A transmission shaft 14 is fixedly installed at the bottom end of the bevel gear 13. The transmission shaft 14 passes through the top cylinder of the screening cylinder 4 and extends downward. The top of its extension end is rotatably sleeved with a limiting sleeve 15, which is welded to the inner wall of the top end of the screening cylinder 4.

[0037] Two mounting connectors 24 are fixedly installed on the lower outer wall of the transmission shaft 14. The two mounting connectors 24 are respectively set on the upper surface of the upper sieve plate 16 and the lower sieve plate 17. A fixed mounting slot is opened on one side of the mounting connector 24. A connecting block 25 is fixedly installed inside the fixed mounting slot. A rubber stirring rod 26 is fixedly connected to one side of the connecting block 25. The rubber stirring rod 26 is made of hard rubber and stirs the steel balls to assist in the steel ball screening work.

[0038] Working principle:

[0039] Please refer to Figures 1 to 3 Assemble the device as shown in the figure;

[0040] When using this device, first start the drive motor 11. The drive motor 11 drives the transmission shaft 14 to rotate through the meshing of bevel gear 12 and bevel gear 13. The transmission shaft 14 drives the two rubber stirring rods 26 to rotate at low speed through the mounting connector 24. Then, steel balls are poured into the screening cylinder 4 through the ball feed inlet 9 and fall onto the upper screening plate 16. Under the action of the rubber stirring rods 26, steel balls smaller than the upper limit of the standard size pass through the screening hole 163 and fall onto the lower screening plate 17, while steel balls smaller than the lower limit of the standard size pass through the screening hole 163 and fall onto the protective rubber pad 23, and are discharged through the discharge pipe 1 5. After screening this batch of steel balls, pull out the sealing plate 8. The steel balls on the upper screening plate 16 are discharged through the discharge pipe 3 7, and the steel balls on the lower screening plate 17 are discharged through the discharge pipe 2 6. Finally, the next batch of steel balls is screened.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A ball bearing screening device for bearing production, characterized in that, include: A supporting chassis (1) and a screening cylinder (4) are provided. An upper screening plate (16) and a lower screening plate (17) with identical structures are fixedly installed in the middle of the inner cavity of the screening cylinder (4). The main body of the upper screening plate (16) is configured as a supporting base plate (161). A rubber top plate (162) is fixedly connected to the upper surface of the supporting base plate (161), and two sets of screening holes (163) are opened on the lower surface of the supporting base plate (161). The screening holes (163) penetrate the supporting base plate (161) and the rubber top plate (162). The top and bottom of the inner wall of the sieve hole (163) are provided with guide chamfers (164). The upper surface of the rubber top plate (162) is provided with two guide ring grooves (165). The two guide ring grooves (165) are respectively connected to the two groups of sieve holes (163). The outer wall of one side of the screening cylinder (4) is fixedly connected from bottom to top with a discharge pipe one (5) for discharging steel balls smaller than the standard size, a discharge pipe two (6) for discharging steel balls of the standard size, and a discharge pipe three (7) for discharging steel balls larger than the standard size.

2. The ball bearing screening device for bearing production according to claim 1, characterized in that: Both discharge pipe 2 (6) and discharge pipe 3 (7) have a sealing plate (8) fixedly inserted at the end of the front of the screen cylinder (4), and a ball feed inlet (9) is fixedly connected to the top of the other side of the screen cylinder (4).

3. The ball bearing screening device for bearing production according to claim 1, characterized in that: The upper surface of the supporting chassis (1) is integrally formed with a positioning block with an inclined upper surface, and a protective rubber pad (23) is fixedly connected to the upper surface of the positioning block.

4. The ball bearing screening device for bearing production according to claim 3, characterized in that: The lower surface of the support chassis (1) is provided with an installation groove (18), the top wall of the installation groove (18) is provided with a diversion groove (21), and the top wall of the diversion groove (21) is provided with a plurality of air outlet holes (22) at equal intervals.

5. A ball bearing screening device for bearing production according to claim 4, characterized in that: A dust-proof mesh plate (20) is fixedly installed on the lower surface of the supporting chassis (1), and a high-flow fan (19) is fixedly installed inside the mounting groove (18).

6. The ball bearing screening device for bearing production according to claim 1, characterized in that: A motor base (10) is fixedly installed at the top of the screening cylinder (4), and a drive motor (11) is fixedly installed at the top of the motor base (10).

7. A ball bearing screening device for bearing production according to claim 6, characterized in that: The output shaft of the drive motor (11) is fixedly mounted with a bevel gear one (12), and a bevel gear two (13) is meshed with one side of the bevel gear one (12).

8. A ball bearing screening device for bearing production according to claim 7, characterized in that: The bottom end of the bevel gear 2 (13) is fixedly installed with a transmission shaft (14), and two mounting connectors (24) are fixedly installed on the lower outer wall of the transmission shaft (14). A rubber stirring rod (26) is provided on one side of the mounting connector (24).

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