External circulation backflow type ball screw

Abstract

The utility model discloses an external circulation backflow type ball screw which comprises a screw body, the screw body is connected to external equipment, an oil injection mechanism is arranged on the screw body, and the oil injection mechanism comprises a threaded sleeve, a ball body, a sealing plate, a one-way pipe, a one-way mechanism, a middle pipe, an adjusting rod, a sealing ring, a top ball and an adjusting mechanism. The threaded sleeve is slidably connected to the lead screw body, the ball body is rotatably connected to the threaded sleeve and the lead screw body, the oil injection mechanism can achieve smooth inflow and effective sealing of lubricating oil, and the design of the threaded sleeve and the ball body enables the lubricating oil to be directly injected into key parts of the ball and the lead screw. By means of the design, the lubricating process is simplified, the lubricating uniformity and efficiency are improved, the friction force of the balls is reduced, and the service life of the ball screw is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to external circulation backflow type ball screw technical field, more specifically, it relates to a kind of external circulation backflow type ball screw. BACKGROUND

[0002] In the existing external circulation backflow type ball screw technology, the design of lubrication system is a key factor, which directly affects the service performance and life of ball screw. However, the existing external circulation backflow type ball screw has certain deficiencies in filling lubricating oil, which brings inconvenience to practical application.

[0003] Firstly, the existing external circulation backflow type ball screw often fails to fully consider the filling problem of lubricating oil in design. In actual use process, ball screw needs to be filled with lubricating oil regularly to reduce the friction between ball and screw, and to ensure its smooth operation. However, due to the lack of effective measures for filling lubricating oil in the design of existing equipment, such as lack of filling port or inconvenient filling port position, the operator faces difficulties when filling. This not only increases the operation difficulty, but also may lead to insufficient lubrication, thereby increasing the friction of ball and reducing the service performance and life of ball screw.

[0004] Secondly, the existing external circulation backflow type ball screw lacks convenience and efficiency when filling lubricating oil. Due to the structure and layout of ball screw, special tools or equipment such as oil pump or syringe may be needed for filling lubricating oil. This makes the operator need additional steps and time when filling, increases the operation cost and complexity. In addition, due to the lack of effective backflow system, the filled lubricating oil may not be evenly distributed to the whole ball screw, leading to uneven lubrication and further increasing the friction of ball. CONTENT OF THE UTILITY MODEL

[0005] In view of the problems existing in the prior art, the utility model provides an external circulation backflow type ball screw to solve the technical problems mentioned in the background art.

[0006] TECHNICAL SCHEME

[0007] To achieve the above object, the utility model provides the following technical scheme: a kind of outer circulation backflow type ball screw, including screw body, screw body is connected on external equipment, oil injection mechanism is arranged on the screw body, the oil injection mechanism includes threaded sleeve, ball body, sealing plate, one-way pipe, one-way mechanism, intermediate pipe, adjusting rod, sealing ring, top ball and adjusting mechanism, threaded sleeve is slidably connected on screw body, ball body is rotatably connected on threaded sleeve and screw body, sealing sleeve is installed on threaded sleeve, one-way pipe is installed on sealing plate, the one-way mechanism is connected on one-way pipe in cooperation, intermediate pipe and one-way pipe are coaxially arranged, adjusting rod is slidably connected on intermediate pipe, top ball is installed on adjusting rod, top ball is in contact on ball body, sealing ring is installed on adjusting rod, and sealing ring is attached on the inner wall of intermediate pipe, and the adjusting mechanism is installed on intermediate pipe.

[0008] The utility model further provides that the one-way pipe is provided with an oil inlet pipe connected to an external oil inlet device, and the design of the oil inlet pipe ensures the continuity of lubrication.

[0009] The utility model further provides that the one-way mechanism includes a one-way disc and a spring, the one-way disc is coaxially installed on the intermediate pipe and in contact with the one-way pipe, and the spring is installed on the one-way disc, and the design of the one-way mechanism ensures the continuity of lubrication.

[0010] The utility model further provides that the one-way pipe is provided with a sealing sleeve threaded thereon, the intermediate pipe is slidably connected in the sealing sleeve, and the spring is in contact with the sealing sleeve, and the design of the sealing sleeve ensures the sealing of the one-way pipe.

[0011] The utility model further provides that the adjusting mechanism includes an outer sleeve and a threaded segment, the outer sleeve is installed on the intermediate pipe, the threaded segment is installed on the adjusting rod, and the threaded segment is threadedly connected to the outer sleeve, and the design of the adjusting mechanism ensures the position adjustment of the top ball.

[0012] The utility model further provides that the threaded segment is coaxially provided with a rotating disc thereon, the rotating disc is provided with a compression spring thereon, the compression spring is in contact with the intermediate pipe, and the design of the rotating disc ensures the position adjustment of the adjusting rod.

[0013] The utility model further provides that a plurality of anti-skid grooves are formed in the side wall of the rotating disc, and the plurality of anti-skid grooves are equidistantly arranged, and the design of the anti-skid grooves ensures the convenient rotation of the rotating disc.

[0014] The utility model further provides that the threaded sleeve is connected to the external equipment. Beneficial effects

[0015] Compared with the prior art, the utility model provides an outer circulation backflow type ball screw, which has the following beneficial effects:

[0016] 1. The design of the oil injection mechanism enables the external circulation and backflow type ball screw to be conveniently filled with lubricating oil. Through the cooperation of the threaded sleeve, the ball body, the sealing plate, the one-way pipe, the intermediate pipe, the adjusting rod, the sealing ring, the top ball and the adjusting mechanism, the oil injection mechanism can realize smooth inflow and effective sealing of the lubricating oil. The design of the threaded sleeve and the ball body enables the lubricating oil to be directly injected into the key parts of the ball and the screw. This design not only simplifies the lubrication process, but also improves the uniformity and efficiency of lubrication, thereby reducing the friction of the ball and prolonging the service life of the ball screw.

[0017] 2. The design of the one-way mechanism ensures the one-way flow of the lubricating oil during the oil injection process, preventing backflow and waste of the lubricating oil. Through the cooperation of the one-way pipe, the one-way disc and the spring, the one-way mechanism can control the lubricating oil to flow only from the oil inlet pipe to the ball body and the threaded sleeve, and not to flow in the opposite direction. This design improves the accuracy and efficiency of oil injection, avoids insufficient or excessive lubrication due to backflow of the lubricating oil, further reduces the friction of the ball, and improves the performance of the ball screw.

[0018] 3. The design of the adjusting mechanism enables the external circulation and backflow type ball screw to adjust the amount of oil injected each time according to actual needs. Through the cooperation of the external sleeve, the threaded section, the rotating disc, the compression spring and the anti-slip groove, the adjusting mechanism can accurately control the position of the top ball, thereby adjusting the opening of the one-way disc and controlling the amount of oil injected each time. This design provides flexible lubrication adjustment function, enabling the operator to adjust the supply of lubricating oil according to the working state and environmental conditions of the ball screw, optimizing the running performance of the ball screw, reducing the maintenance cost, and prolonging the service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of an external circulation and backflow type ball screw in the utility model.

[0020] Figure 2 It is a schematic diagram of the sectional structure of Figure 1 in the utility model.

[0021] Figure 3 It is a schematic diagram of the structure of the one-way pipe in the utility model.

[0022] Figure 4 It is a schematic diagram of the sectional structure of Figure 3 in the utility model.

[0023] Figure 5 It is a schematic diagram of the sectional structure of the intermediate pipe in the utility model.

[0024] In the figure: 1, screw body; 2, threaded sleeve; 3, ball body; 4, sealing plate; 5, one-way pipe; 6, intermediate pipe; 7, adjusting rod; 8, sealing ring; 9, top ball; 10, oil inlet pipe; 11, one-way disc; 12, spring; 13, sealing sleeve; 14, outer sleeve; 15, threaded section; 16, rotating disc; 17, compression spring; 18, anti-skid groove. DETAILED DESCRIPTION

[0025] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0027] In the present application, unless otherwise specified, the directions used such as "up, down" are generally with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity directions; similarly, for the convenience of understanding and description, "left, right" are generally with respect to the left and right shown in the drawings; "inner, outer" refer to the inner and outer with respect to the contour of each component itself, but the above directional words are not used to limit the present application.

[0028] Please refer to Figures 1-5The utility model provides a kind of outer circulation backflow type ball screw, including screw body 1, screw body 1 is connected on external device, oil injection mechanism is provided on screw body 1, oil injection mechanism includes threaded sleeve 2, ball body 3, sealing plate 4, one-way pipe 5, one-way mechanism, intermediate pipe 6, adjusting rod 7, sealing ring 8, top ball 9 and adjusting mechanism, threaded sleeve 2 is slidably connected on screw body 1, ball body 3 is rotatably connected on threaded sleeve 2 and screw body 1, sealing sleeve 13 is installed on threaded sleeve 2, one-way pipe 5 is installed on sealing plate 4, one-way mechanism is cooperatively connected on one-way pipe 5, intermediate pipe 6 and one-way pipe 5 are coaxially arranged, adjusting rod 7 is slidably connected on intermediate pipe 6, top ball 9 is installed on adjusting rod 7, top ball 9 is in contact with ball body 3, sealing ring 8 is installed on adjusting rod 7, and sealing ring 8 is attached on the inner wall of intermediate pipe 6, adjusting mechanism is installed on intermediate pipe 6, one-way pipe 5 is equipped with oil inlet pipe 10, oil inlet pipe 10 is connected on external oil inlet device, one-way mechanism includes one-way disc 11 and spring 12, one-way disc 11 is coaxially installed on intermediate pipe 6, and one-way disc 11 is in contact with one-way pipe 5, spring 12 is installed on one-way disc 11, one-way pipe 5 is threadedly provided with sealing sleeve 13, intermediate pipe 6 is slidably connected in sealing sleeve 13, spring 12 is in contact with sealing sleeve 13, adjusting mechanism includes external sleeve 14 and threaded section 15, external sleeve 14 is installed on intermediate pipe 6, threaded section 15 is installed on adjusting rod 7, threaded section 15 is threadedly connected on external sleeve 14, threaded section 15 is coaxially provided with rotating disc 16, rotating disc 16 is provided with compression spring 17, compression spring 17 is in contact with intermediate pipe 6, a plurality of anti-skid grooves 18 are formed in the side wall of rotating disc 16, and the plurality of anti-skid grooves 18 are equidistantly arranged, threaded sleeve 2 is connected on external device.

[0029] In the embodiment, when lubrication is needed, threaded sleeve 2 is installed on external device, and the rotation of screw can make a plurality of ball bodies 3 rotate, when ball body 3 is in contact with top ball 9, intermediate pipe 6 can slide upward, the seal between one-way disc 11 and one-way pipe 5 is released, and then the lubricating oil in oil inlet pipe 10 can flow into ball body 3 and threaded sleeve 2 through one-way pipe 5, so as to complete the lubrication process.

[0030] More specifically, when the amount of oil is needed to be adjusted, the position of top ball 9 is adjusted, the displacement of ball body 3 on top ball 9 can control the opening between one-way disc 11 and one-way pipe 5, so as to control the amount of oil, threaded section 15 is threadedly connected on external sleeve 14, so the position between intermediate pipe 6 and adjusting rod 7 can be changed, the opening between one-way disc 11 can be changed, and the amount of oil can be adjusted, when lubrication is not needed, adjusting rod 7 is rotated to the position where top ball 9 is not in contact with ball body 3, so as to complete the sealing, and the use process is completed.

[0031] In summary, when the whole device is in use or operation: when lubrication is needed, since the threaded sleeve 2 is installed on the external device, the plurality of ball bodies 3 can be rotated by rotating the screw rod, when the ball bodies 3 abut against the top ball 9, the intermediate pipe 6 can be driven to slide upward, then the seal between the one-way disc 11 and the one-way pipe 5 is released, then the lubricating oil in the oil inlet pipe 10 can flow into the ball bodies 3 and the threaded sleeve 2 through the one-way pipe 5, thereby completing the lubrication process.

[0032] When the amount of oil is needed to be adjusted each time, only the position of the top ball 9 needs to be adjusted, so that the displacement of the ball body 3 abutting against the top ball 9 each time can control the opening degree between the one-way disc 11 and the one-way pipe 5, thereby the amount of oil each time can be controlled, since the threaded section 15 is screwed on the external sleeve 14, the position between the intermediate pipe 6 and the adjusting rod 7 can be changed, thereby the opening degree between the one-way disc 11 is changed, thereby the amount of oil is adjusted, when lubrication is not needed, only the adjusting rod 7 needs to be rotated to the position that the top ball 9 does not contact with the ball body 3, the sealing is completed, thereby the use process is completed.

[0033] In all the above-mentioned schemes, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut cooperation connection, bolt or screw connection or other known connection mode, which is not described one by one here, whenever the above-mentioned schemes involve fixed connection, welding is preferred, although the embodiments of the utility model have been shown and described, for those skilled in the art, it can be understood that the embodiments can be changed, modified, replaced and modified in various ways without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An external circulation return type ball screw comprising a screw body (1), characterized in that, The screw body (1) is connected to external equipment, the oil injection mechanism is arranged on the screw body (1), the oil injection mechanism comprises a threaded sleeve (2), a ball body (3), a sealing plate (4), a one-way pipe (5), a one-way mechanism, an intermediate pipe (6), an adjusting rod (7), a sealing ring (8), a top ball (9) and an adjusting mechanism, the threaded sleeve (2) is slidably connected to the screw body (1), the ball body (3) is rotatably connected to the threaded sleeve (2) and the screw body (1), the sealing sleeve (13) is installed on the threaded sleeve (2), the one-way pipe (5) is installed on the sealing plate (4), the one-way mechanism is connected to the one-way pipe (5) in a matched mode, the intermediate pipe (6) and the one-way pipe (5) are coaxially arranged, the adjusting rod (7) is slidably connected to the intermediate pipe (6), the top ball (9) is installed on the adjusting rod (7), the top ball (9) abuts against the ball body (3), the sealing ring (8) is installed on the adjusting rod (7), and the sealing ring (8) is attached to the inner wall of the intermediate pipe (6), and the adjusting mechanism is installed on the intermediate pipe (6).

2. The outer circulation return type ball screw according to claim 1, wherein: The one-way pipe (5) is provided with an oil inlet pipe (10), and the oil inlet pipe (10) is connected to external oil inlet equipment.

3. The outer circulation return type ball screw according to claim 2, wherein: The one-way mechanism comprises a one-way disc (11) and a spring (12), the one-way disc (11) is coaxially installed on the intermediate pipe (6), and the one-way disc (11) abuts against the one-way pipe (5); the spring (12) is installed on the one-way disc (11).

4. The outer circulation return type ball screw according to claim 3, wherein: The one-way pipe (5) is provided with a sealing sleeve (13) in a threaded mode, the intermediate pipe (6) is slidably connected to the sealing sleeve (13), and the spring (12) abuts against the sealing sleeve (13).

5. The outer circulation return type ball screw according to claim 1, wherein: The adjusting mechanism comprises an external sleeve (14) and a threaded section (15), the external sleeve (14) is installed on the intermediate pipe (6), the threaded section (15) is installed on the adjusting rod (7), and the threaded section (15) is threadedly connected to the external sleeve (14).

6. The outer circulation return type ball screw according to claim 5, wherein: The threaded section (15) is coaxially provided with a rotating disc (16), the rotating disc (16) is provided with a compression spring (17), and the compression spring (17) abuts against the intermediate pipe (6).

7. The outer circulation return type ball screw according to claim 6, wherein: A plurality of anti-skid grooves (18) are formed in the side wall of the rotating disc (16), and the plurality of anti-skid grooves (18) are equidistantly arranged.

8. The outer circulation return type ball screw according to claim 1, wherein: The threaded sleeve (2) is connected to external equipment.

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