Polishing machine structure

Abstract

The utility model discloses a polishing machine structure which comprises a machine frame body, a shaft sleeve rotationally connected with the machine frame body is arranged in the machine frame body, and a connecting shaft body synchronously rotating with the shaft sleeve is arranged in the shaft sleeve. A limiting assembly used for locking the connecting shaft body and the shaft sleeve is arranged between the connecting shaft body and the shaft sleeve and comprises a movable piece and a steel ball, and the steel ball is arranged between the movable piece and the connecting shaft body. The opening end of the rack main body is provided with a housing capable of stretching and retracting relative to the rack main body, and the movable part is arranged above the housing; and when the housing pushes the movable part to move, the steel balls can radially move relative to the connecting shaft body. A shaft sleeve is arranged in a rack main body, and a connecting shaft body detachably connected with the shaft sleeve is arranged in the shaft sleeve; the limiting assembly is pushed to be unlocked through the housing, so that the connecting shaft body is convenient to disassemble, and parts on the shaft sleeve and the connecting shaft body are convenient to clean.

Description

Technical Field

[0001] The utility model belongs to the technical field of polishing machines, and particularly relates to a polishing machine structure. Background Art

[0002] A polishing machine is a commonly used grinding tool and is relatively common in daily life; generally, an existing polishing machine includes a frame body, a motor and a rotating shaft are arranged in the frame body, an eccentric seat that rotates synchronously with the motor is arranged below the motor, and the rotating shaft is installed on the eccentric seat through a bearing; since the motor, the rotating shaft and the eccentric seat are all fixedly installed, it is not convenient to disassemble, and it is relatively difficult for the operator to repair and maintain. At the same time, a large amount of impurities will be generated during the working process of the polishing machine, and the impurities are not easy to clean when attached to the eccentric seat and the rotating shaft, which greatly reduces the service life of the product. Therefore, it is necessary to design a polishing machine structure to overcome the above difficulties. Summary of the Invention

[0003] Aiming at the problems existing in the prior art, the utility model designs a polishing machine structure. The utility model is provided with a bushing in the frame body, and a connecting shaft body detachably connected to the bushing is arranged in the bushing; the limiting component is unlocked by pushing the cover shell, which is convenient for disassembling the connecting shaft body and facilitating the cleaning of the components on the bushing and the connecting shaft body.

[0004] The invention purpose of the utility model is realized through the following technical solutions: a polishing machine structure includes a frame body, a bushing rotatably connected to the frame body is arranged in the frame body, and a connecting shaft body rotating synchronously with the bushing is arranged in the bushing; a limiting component for locking the two is arranged between the connecting shaft body and the bushing, and the limiting component includes a movable part and steel balls, and the steel balls are arranged between the movable part and the connecting shaft body; an open end of the frame body is provided with a cover shell capable of telescoping relative to the frame body, and the movable part is arranged above the cover shell; when the cover shell pushes the movable part to move, the steel balls can move radially relative to the connecting shaft body.

[0005] Preferably, a support seat detachably connected to the frame body is arranged inside the frame body, and a first elastic member is arranged between the support seat and the cover shell; one end of the first elastic member abuts against the cover shell, and the other end abuts against the support seat.

[0006] By arranging the support seat, it is convenient to limit the first elastic member; by arranging the first elastic member, after the cover shell is pushed upward, the cover shell can automatically return to the initial position.

[0007] Preferably, an annular step is arranged at the open end of the frame body, and an annular protrusion is arranged on the outer wall of the cover shell; by default, the annular protrusion abuts against the annular step, and the first elastic member is in a compressed state; a first protrusion is arranged on the outer layer of the support seat, and the top of the first elastic member abuts against the first protrusion.

[0008] Only by the mutual cooperation of the annular protrusion and the annular step can the cover be clamped on the main body of the frame, so that the cover will not be separated from the main body of the frame. By providing the first protrusion, the top of the first elastic member is limited.

[0009] Preferably, an annular clamping groove is provided in the cover, and the bottom of the first elastic member is arranged in the annular clamping groove. By providing the annular clamping groove, the bottom of the first elastic member is limited.

[0010] Preferably, the limiting assembly further includes a second elastic member, and a plurality of steel balls are provided between the movable member and the connecting shaft body; the sleeve is hollow, and a plurality of limiting holes for inserting the steel balls are provided on the sleeve; a support seat is provided in the main body of the frame, one end of the second elastic member abuts against the inside of the support seat, and the other end of the second elastic member abuts against the movable member.

[0011] In the default state, the steel balls are clamped between the movable member and the connecting shaft body, and the movable member limits the steel balls, so that the steel balls cannot move radially relative to the connecting shaft body, so that the connecting shaft body can be clamped in the sleeve and will not be separated from the sleeve. When the connecting shaft body needs to be disassembled, the movable member is pushed by the cover, so that the steel balls have a moving space, so that the steel balls are far away from the connecting shaft body, and the connecting shaft body can be taken out of the sleeve.

[0012] Preferably, a limiting groove is provided on the connecting shaft body, and an annular cone portion is provided at the top of the movable member; a snap ring is provided on the outside of the sleeve, a second protrusion is provided on the outer layer of the movable member, and the bottom of the movable member abuts against the snap ring; the movable member is arranged above the cover, and when the cover moves up, the movable member is pushed up; when the movable member moves up, the annular cone portion on the movable member is misaligned with the limiting hole.

[0013] In the default state, the cover is located below the movable member. At this time, the movable member abuts against the snap ring, and the annular cone portion on the movable member is facing the limiting hole. At this time, the steel balls are between the limiting groove and the limiting hole, so that the connecting shaft body will be stuck by the steel balls and cannot be removed from the sleeve; at this time, both the first elastic member and the second elastic member are in a compressed state. When it is necessary to unlock and remove the connecting shaft body, the cover is pushed upward. The cover pushes the movable member upward, and the first elastic member and the second elastic member are further compressed; when the movable member moves up, the annular cone portion is misaligned with the limiting hole, so that the steel balls have a displacement space and the steel balls will not limit the connecting shaft body; hold the cover and do not let go, and pull the connecting shaft body downward, and the connecting shaft body can be taken out.

[0014] Preferably, a second elastic member is provided on the second protrusion, and the bottom of the second elastic member abuts against the second protrusion; a first step is provided in the cover, the first step and the second protrusion are adjacent, and the first step is arranged below the second protrusion.

[0015] By setting the second protrusion, it is convenient to limit the bottom of the second elastic member; at the same time, through the cooperation of the first step and the second protrusion, the movable member can be driven to move upward when the cover moves.

[0016] Preferably, a relief cavity is provided in the movable member, and when the annular conical portion on the movable member moves out of alignment with the limiting hole, the steel ball can move along the limiting groove into the relief cavity. By providing the relief cavity, it is convenient to provide a relief space for the steel ball; when the annular conical portion and the limiting hole are misaligned, the steel ball can move into the relief cavity. Each time the connecting shaft body is installed, the cover needs to be pressed, so that the cover will squeeze the movable member, causing the steel ball to move into the relief cavity first; then the connecting shaft body is installed into the shaft sleeve, and then the cover is released, so that the steel ball will automatically snap into the limiting groove, thereby locking the connecting shaft body.

[0017] Preferably, the connecting shaft body includes a cylindrical body, the outer wall of the cylindrical body is arranged in contact with the inner wall of the shaft sleeve, and their outer contour shapes match each other. By providing the cylindrical body, the connecting shaft body and the shaft sleeve are coaxially arranged, and the shaft sleeve positions the connecting shaft body.

[0018] Preferably, a positioning member is provided inside the shaft sleeve and is tightly connected thereto; the shaft sleeve is sleeved and installed on the outer layer of the positioning member; a polygonal columnar body is provided on the connecting shaft body, and the positioning member is sleeved and installed on the outer layer of the polygonal columnar body; the inner contour of the positioning member matches the outer contour shape of the polygonal columnar body. Through the cooperation of the positioning member and the polygonal columnar body, the shaft sleeve can transmit torque to the connecting shaft body, and when the shaft sleeve rotates, it drives the connecting shaft body to rotate synchronously.

[0019] Compared with the prior art, the present utility model has the following beneficial effects: 1. The shaft sleeve and the connecting shaft body of the present utility model are detachably connected, which is convenient for disassembly and facilitates later cleaning and maintenance. 2. The shaft sleeve and the connecting shaft body are locked by the limiting component. In the locked state, the steel ball is clamped between the connecting shaft body and the shaft sleeve, and the locking effect is good and reliable. 3. The limiting component is convenient to unlock. By pushing the cover, the movable member can be driven to move, thereby providing a moving space for the steel ball, so that the connecting shaft body can be conveniently taken out. 4. There is good concentricity between the connecting shaft body and the shaft sleeve, and when the shaft sleeve rotates, it can drive the connecting shaft body to rotate synchronously. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective view of the present utility model;

[0021] Figure 2 is an internal structure diagram of the present utility model;

[0022] Figure 3 is Figure 2 a partial enlarged view of position A in

[0023] Figure 4 It is an exploded view of the utility model;

[0024] Figure 5 It is a partial internal structure diagram of the utility model;

[0025] Figure 6 is a three-dimensional diagram of the shaft sleeve;

[0026] Figure 7 is a three-dimensional diagram of the connecting shaft body;

[0027] Figure 8 The internal structure diagram of the housing;

[0028] Markings in the figure: 1. frame body; 2. bushing; 3. connecting shaft body; 4. limiting assembly; 41. movable part; 42. steel ball; 43. second elastic part; 5. cover; 6. support seat; 7. first elastic part; 8. annular step; 9. annular protrusion; 10. first protrusion; 11. annular groove; 12. limiting hole; 13. limiting groove; 14. annular cone; 15. retaining spring; 16. second protrusion; 17. first step; 18. clearance cavity; 19. cylindrical body; 20. positioning part; 21. polygonal cylindrical body; 22. eccentric block; 23. output shaft; 24. grinding disc. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0030] like Figures 1 to 8 As shown, this embodiment discloses a polishing machine structure, including a frame body 1, a shaft sleeve 2 rotatably connected to the frame body 1 is provided inside the frame body 1, and a connecting shaft body 3 rotating synchronously with the shaft sleeve 2 is provided inside the shaft sleeve 2; a limit assembly 4 for locking the connecting shaft body 3 and the shaft sleeve 2 is provided between the connecting shaft body 3 and the shaft sleeve 2, and the limit assembly 4 includes a movable part 41 and a steel ball 42, and the steel ball 42 is arranged between the movable part 41 and the connecting shaft body 3; a cover shell 5 which can be telescopic relative to the open end of the frame body 1 is provided, and the movable part 41 is arranged above the cover shell 5; when the cover shell 5 pushes the movable part 41 to move, the steel ball 42 can move radially relative to the connecting shaft body 3.

[0031] The frame body 1 is provided with a support seat 6 detachably connected thereto, and a first elastic member 7 is provided between the support seat 6 and the cover 5; one end of the first elastic member 7 abuts against the cover 5, and the other end abuts against the support seat 6. The open end of the frame body 1 is provided with an annular step 8, and the outer wall of the cover 5 is provided with an annular protrusion 9; in the default state, the annular protrusion 9 abuts against the annular step 8, and the first elastic member 7 is in a compressed state; the outer layer of the support seat 6 is provided with a first protrusion 10, and the top of the first elastic member 7 abuts against the first protrusion 10. The cover 5 is provided with an annular groove 11, and the bottom of the first elastic member 7 is arranged in the annular groove 11.

[0032] The limiting assembly 4 also includes a second elastic member 43, and a plurality of steel balls 42 are arranged between the movable member 41 and the connecting shaft body 3; the shaft sleeve 2 is hollow, and a plurality of limiting holes 12 for inserting the steel balls 42 are arranged on the shaft sleeve 2; a support seat 6 is arranged inside the frame body 1, and one end of the second elastic member 43 abuts against the inside of the support seat 6, and the other end of the second elastic member 43 abuts against the movable member 41. A limiting groove 13 is arranged on the connecting shaft body 3, and an annular cone 14 is arranged on the top of the movable member 41; a retaining spring 15 is arranged on the outside of the shaft sleeve 2, and a second protrusion 16 is arranged on the outer layer of the movable member 41, and the bottom of the movable member 41 abuts against the retaining spring 15; the movable member 41 is arranged above the cover shell 5, and the movable member 41 is pushed upward when the cover shell 5 moves upward; when the movable member 41 moves upward, the annular cone 14 on the movable member 41 is misaligned with the limiting hole 12. A second elastic member 43 is disposed on the second protrusion 16, and the bottom of the second elastic member 43 abuts against the second protrusion 16. A first step 17 is disposed in the housing 5, and the first step 17 and the second protrusion 16 are disposed adjacent to each other, and the first step 17 is disposed below the second protrusion 16. A clearance cavity 18 is disposed in the movable member 41, and when the annular cone 14 on the movable member 41 moves out of position relative to the limiting hole 12, the steel ball 42 can move along the limiting groove 13 into the clearance cavity 18.

[0033] The connecting shaft body 3 includes a cylindrical body 19, the outer wall of the cylindrical body 19 and the inner wall of the sleeve 2 are arranged in a close fit, and the outer contours of the two are matched with each other. The sleeve 2 is provided with a positioning piece 20 tightly connected thereto inside; the sleeve 2 is sleeved and installed on the outer layer of the positioning piece 20; the connecting shaft body 3 is provided with a polygonal column 21, and the positioning piece 20 is sleeved and installed on the outer layer of the polygonal column 21; the inner contour of the positioning piece 20 and the outer contour of the polygonal column 21 are matched with each other. The end of the connecting shaft body 3 is provided with an eccentric block 22 threadedly connected thereto, and an output shaft 23 is provided inside the eccentric block 22, and the output shaft 23 is installed on the eccentric block 22 through a bearing; the end of the output shaft 23 is provided with a grinding disc 24 threadedly connected thereto.

[0034] The specific operation process of this embodiment is as follows: in the default state, the cover 5 is below the movable member 41, and the movable member 41 is against the retaining spring 15 at this time. The annular cone 14 on the movable member 41 is opposite to the limiting hole 12. At this time, the steel ball 42 is between the limiting groove 13 and the limiting hole 12, so that the connecting shaft body 3 is stuck by the steel ball 42 and cannot be removed from the sleeve 2; at this time, the first elastic member 7 and the second elastic member 43 are both in a compressed state. When it is necessary to unlock and remove the connecting shaft body 3, push the cover 5 upward, and the cover 5 pushes the movable member 41 upward, and the first elastic member 7 and the second elastic member 43 are further compressed; when the movable member 41 moves upward, the annular cone 14 and the limiting hole 12 are mutually misaligned, so that the steel ball 42 has displacement space, and the steel ball 42 will not limit the connecting shaft body 3; press the cover 5 without releasing it, pull the connecting shaft body 3 downward, and the connecting shaft body 3 can be taken out of the sleeve 2. Each time the connecting shaft body 3 is installed, it is necessary to press the cover shell 5, so that the cover shell 5 will squeeze the movable part 41, so that the steel ball 42 will move into the clearance cavity 18 first; then install the connecting shaft body 3 into the sleeve 2, and then release the cover shell 5, so that the steel ball 43 will automatically get stuck in the limiting groove 13, thereby locking the connecting shaft body 3.

[0035] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A polishing machine structure, comprising a frame body (1), characterized in that: A shaft sleeve (2) rotatably connected to the frame body (1) is provided inside the shaft sleeve (2), and a connecting shaft body (3) rotatably connected to the frame body (1) is provided inside the shaft sleeve (2); a limit assembly (4) for locking the connecting shaft body (3) and the shaft sleeve (2) is provided between the connecting shaft body (3) and the shaft sleeve (2); the limit assembly (4) comprises a movable part (41) and a steel ball (42); the steel ball (42) is arranged between the movable part (41) and the connecting shaft body (3); a cover shell (5) capable of being retracted relative to the frame body (1) is provided at the open end of the frame body (1); the movable part (41) is arranged above the cover shell (5); when the movable part (41) is pushed by the cover shell (5) to move, the steel ball (42) can move radially relative to the connecting shaft body (3).

2. The polishing machine structure according to claim 1, characterized in that: A support seat (6) detachably connected to the frame body (1) is provided inside the frame body (1), and a first elastic member (7) is provided between the support seat (6) and the cover shell (5); one end of the first elastic member (7) abuts against the cover shell (5), and the other end abuts against the support seat (6).

3. The polishing machine structure according to claim 2, characterized in that: An annular step (8) is provided at the open end of the frame body (1), and an annular protrusion (9) is provided on the outer wall of the cover shell (5); in a default state, the annular protrusion (9) abuts against the annular step (8), and the first elastic member (7) is in a compressed state; the outer layer of the support seat (6) is provided with a first protrusion (10), and the top of the first elastic member (7) abuts against the first protrusion (10).

4. The polishing machine structure according to claim 3, characterized in that: An annular groove (11) is provided in the cover shell (5), and the bottom of the first elastic member (7) is arranged in the annular groove (11).

5. The polishing machine structure according to claim 1, characterized in that: The limiting assembly (4) further comprises a second elastic member (43), and a plurality of steel balls (42) are arranged between the movable member (41) and the connecting shaft body (3); the shaft sleeve (2) is hollow, and the shaft sleeve (2) is provided with a plurality of limiting holes (12) for inserting the steel balls (42); a support seat (6) is arranged inside the frame body (1), one end of the second elastic member (43) abuts against the inside of the support seat (6), and the other end of the second elastic member (43) abuts against the movable member (41).

6. The polishing machine structure according to claim 5, characterized in that: The connecting shaft body (3) is provided with a limiting groove (13), and the top of the movable member (41) is provided with an annular cone (14); the outside of the shaft sleeve (2) is provided with a retaining spring (15), the outer layer of the movable member (41) is provided with a second protrusion (16), and the bottom of the movable member (41) abuts against the retaining spring (15); the movable member (41) is arranged above the cover shell (5), and when the cover shell (5) moves upward, the movable member (41) is pushed upward; when the movable member (41) moves upward, the annular cone (14) on the movable member (41) and the limiting hole (12) are mutually misaligned.

7. The polishing machine structure according to claim 6, characterized in that: A second elastic member (43) is provided on the second protrusion (16), and the bottom of the second elastic member (43) abuts against the second protrusion (16); a first step (17) is provided in the housing (5), and the first step (17) and the second protrusion (16) are arranged adjacent to each other, and the first step (17) is arranged below the second protrusion (16).

8. The polishing machine structure according to claim 6, characterized in that: The movable member (41) is provided with a clearance cavity (18). When the annular cone (14) on the movable member (41) moves out of position relative to the limiting hole (12), the steel ball (42) can move along the limiting groove (13) into the clearance cavity (18).

9. The polishing machine structure according to claim 1, characterized in that: The connecting shaft body (3) comprises a cylindrical body (19), the outer wall of the cylindrical body (19) and the inner wall of the shaft sleeve (2) are arranged in close contact with each other, and the outer contours of the two are matched with each other.

10. The polishing machine structure according to claim 1, characterized in that: A positioning piece (20) is provided inside the shaft sleeve (2) and is tightly connected thereto; the shaft sleeve (2) is sleeved and mounted on the outer layer of the positioning piece (20); a polygonal columnar body (21) is provided on the connecting shaft body (3), and the positioning piece (20) is sleeved and mounted on the outer layer of the polygonal columnar body (21); the inner contour of the positioning piece (20) and the outer contour of the polygonal columnar body (21) match each other.

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