Positioning mechanism of center guide sleeve

Abstract

The utility model discloses a center guide sleeve positioning mechanism which comprises a base, a circular groove is formed in a center column, two sets of sliding openings which are distributed in an annular array mode and communicated with the circular groove are formed in the circumferential outer wall of the center column, a pair of discs is arranged in the circular groove, and a plurality of extending parts which are in sliding fit with the sliding openings are arranged on the circumferential outer walls of the discs. The circumferential outer wall of the center column is rotationally connected with two sets of supporting rods distributed in an annular array mode, the two sets of supporting rods are symmetrical to each other, the free ends of the supporting rods are rotationally connected with a contact plate, the extending parts are rotationally connected with connecting rods, the other ends of the connecting rods are rotationally connected with the supporting rods, the center column is rotationally connected with a two-way screw, and the two-way screw is in threaded connection with the disc. According to the utility model, the central guide sleeve is sleeved from the end part of the central column, then the two-way screw rod is rotated, the two discs are driven to move close to each other, and the supporting rods are pushed to rotate outwards until the contact plates are tightly attached to the inner wall of the central guide sleeve, so that the central guide sleeve is positioned.

Description

Technical Field

[0001] The utility model relates to the technical field of guide sleeve processing, in particular to a positioning mechanism of a central guide sleeve. Background Art

[0002] The center guide sleeve is a mold accessory, which is used in conjunction with the guide pin to play a guiding role. Generally, the matching clearance is very small, within 0.05mm. It is generally used in molds or some machinery to ensure the accuracy of movement.

[0003] The existing guide sleeve needs to be positioned during the processing. The current positioning of the guide sleeve is generally performed by a fixture, but the fixture easily blocks many parts of the guide sleeve, which causes processing inconvenience. Therefore, corresponding improvements are made to address this problem. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a positioning mechanism for a center guide sleeve.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A positioning mechanism for a center guide sleeve comprises a base, a center column is connected to the top of the base through a lifting assembly, a circular groove is opened in the center column, two groups of sliding openings connected to the circular groove and distributed in an annular array are opened on the circumferential outer wall of the center column, a pair of circular discs are arranged in the circular groove, a plurality of extension parts which form a sliding fit with the sliding openings are arranged on the circumferential outer wall of the disks, two groups of support rods distributed in an annular array are rotatably connected to the circumferential outer wall of the center column, the two groups of support rods are symmetrical to each other, the free ends of the support rods are rotatably connected to a contact plate which can contact the inner wall of the center guide sleeve, a connecting rod is rotatably connected to the extension part, the other end of the connecting rod is rotatably connected to the support rod, a bidirectional screw is rotatably connected to the center column, and the bidirectional screw is threadedly connected to the circular disc.

[0007] Preferably, a rubber pad is fixed to the upper surface of the contact plate.

[0008] Preferably, a positioning rod is rotatably connected to the lower surface of the contact plate, a positioning hole with a diameter larger than the diameter of the positioning rod is formed at the free end of the support rod, and the positioning rod is inserted into the positioning hole.

[0009] Preferably, a spring is fixed to the end of the contact plate, and the other end of the spring is fixed to the support rod.

[0010] Preferably, the lifting assembly includes a vertical plate fixed on the base, a sliding sleeve connected to the central column is slidably connected to the vertical plate, and an adjusting screw threadedly connected to the sliding sleeve is rotatably connected to the vertical plate.

[0011] Preferably, the center column and the sliding sleeve can be either fixedly connected or rotatably connected. If the two are rotatably connected, a motor is fixed on the side of the vertical plate, the motor output shaft is connected to a first gear, and a second gear meshing with the first gear is fixedly sleeved on the center column.

[0012] The beneficial effects of the utility model are:

[0013] 1. The device is provided with a contact plate, and the center guide sleeve is inserted from the end of the center column, and then the bidirectional screw is rotated to drive the two discs to move closer to each other. The extension part pushes the support rod to rotate outward through the connecting rod until the contact plate is close to the inner wall of the center guide sleeve, thereby positioning the center guide sleeve.

[0014] 2. The device is provided with a positioning rod, and the movable angle of the positioning rod is limited by the positioning hole, so that the contact plate can be limited to move within an angle range to prevent the contact plate from flipping to a position below the support rod. Alternatively, the contact plate can be limited to move within an angle range by a spring to prevent the contact plate from flipping to a position below the support rod.

[0015] 3. The device is provided with a motor, the output shaft of the motor drives the first gear to rotate, the meshing of the first gear drives the second gear to rotate, and the second gear synchronously drives the center column and the center guide sleeve to rotate, which makes the grinding process of the center guide sleeve more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a positioning mechanism of a center guide sleeve proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of a center column of a positioning mechanism of a center guide sleeve proposed by the utility model;

[0018] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure of the positioning mechanism of the central guide sleeve proposed at position A;

[0019] Figure 4 The utility model is a schematic diagram of a contact plate installation structure of a positioning mechanism of a center guide sleeve.

[0020] In the figure: 1. base; 2. center column; 3. circular groove; 4. sliding mouth; 5. disc; 6. extension part; 7. support rod; 8. connecting rod; 9. bidirectional screw; 10. contact plate; 11. rubber pad; 12. positioning hole; 13. positioning rod; 14. spring; 15. vertical plate; 16. sliding sleeve; 17. adjusting screw; 18. motor; 19. first gear; 20. second gear. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-4 A positioning mechanism for a center guide sleeve comprises a base 1, a center column 2 is connected to the base 1 through a lifting assembly, a circular groove 3 is provided in the center column 2, two groups of sliding openings 4 communicating with the circular groove 3 are provided on the circumferential outer wall of the center column 2, a pair of circular discs 5 are arranged in the circular groove 3, a plurality of extensions 6 which form a sliding fit with the sliding opening 4 are provided on the circumferential outer wall of the circular disc 5, two groups of support rods 7 distributed in an annular array are rotatably connected to the circumferential outer wall of the center column 2, the two groups of support rods 7 are symmetrical to each other, and the free ends of the support rods 7 are rotatably connected to the inner wall of the center guide sleeve. The contact plate 10 and the extension part 6 are rotatably connected with a connecting rod 8, and the other end of the connecting rod 8 is rotatably connected with the support rod 7. The center column 2 is rotatably connected with a bidirectional screw 9, and the bidirectional screw 9 is threadedly connected with the disc 5. The center guide sleeve is inserted from the end of the center column 2 until the center guide sleeve covers all the contact plates 10. Then the bidirectional screw 9 is rotated to drive the two discs 5 to move closer to each other. The extension part 6 pushes the support rod 7 to rotate outward through the connecting rod 8 until the contact plate 10 is tightly attached to the inner wall of the center guide sleeve, thereby positioning the center guide sleeve.

[0023] Furthermore, a rubber pad 11 is fixed to the upper surface of the contact plate 10 , and the rubber pad 11 can increase the friction between the contact plate 10 and the central guide sleeve, so that the central guide sleeve is fixed more stably and the wear between the two can be prevented.

[0024] Furthermore, the lower surface of the contact plate 10 is rotatably connected to a positioning rod 13, and a positioning hole 12 with a diameter larger than the diameter of the positioning rod 13 is formed at the free end of the support rod 7. The positioning rod 13 is inserted into the positioning hole 12, and the movable angle of the positioning rod 13 is limited by the positioning hole 12. In this way, the contact plate 10 can be limited to move within an angle range to prevent the contact plate 10 from flipping over to a position below the support rod 7. When the center guide sleeve is positioned, the contact plate 10 can automatically and gradually rotate to a horizontal direction after contacting the inner wall of the center guide sleeve.

[0025] Furthermore, a spring 14 is fixed to the end of the contact plate 10, and the other end of the spring 14 is fixed to the support rod 7. The spring 14 can also limit the movement of the contact plate 10 within an angle range to prevent the contact plate 10 from flipping to a position below the support rod 7.

[0026] Furthermore, the lifting assembly includes a vertical plate 15 fixed on the base 1, and a sliding sleeve 16 connected to the center column 2 is slidably connected to the vertical plate 15. An adjusting screw 17 that is rotatably connected to the vertical plate 15 and forms a threaded connection with the sliding sleeve 16. The adjusting screw 17 is rotated to move the sliding sleeve 16 upward or downward, and the sliding sleeve 16 synchronously drives the center column 2 and the center guide sleeve to move, thereby facilitating the processing of the center guide sleeve.

[0027] Furthermore, the center column 2 and the sliding sleeve 16 can be either fixedly connected or rotatably connected. If the two are rotatably connected, a motor 18 is fixed on the side of the vertical plate 15, and the output shaft of the motor 18 is connected to a first gear 19. A second gear 20 meshing with the first gear 19 is fixedly provided on the center column 2. When the motor 18 is started, the output shaft of the motor 18 drives the first gear 19 to rotate, and the first gear 19 meshes to drive the second gear 20 to rotate. The second gear 20 synchronously drives the center column 2 and the center guide sleeve to rotate, which makes it more convenient to grind the center guide sleeve.

[0028] Working principle: insert the center guide sleeve from the end of the center column 2 until the center guide sleeve covers all the contact plates 10, then rotate the bidirectional screw 9 to drive the two discs 5 to move closer to each other, and the extension part 6 pushes the support rod 7 to rotate outward through the connecting rod 8 until the contact plate 10 is close to the inner wall of the center guide sleeve, thereby positioning the center guide sleeve;

[0029] The adjusting screw 17 is rotated to make the sliding sleeve 16 move upward or downward, and the sliding sleeve 16 synchronously drives the center column 2 and the center guide sleeve to move, so that the center guide sleeve can be processed conveniently;

[0030] Start the motor 18, the output shaft of the motor 18 drives the first gear 19 to rotate, the first gear 19 engages to drive the second gear 20 to rotate, and the second gear 20 synchronously drives the center column 2 and the center guide sleeve to rotate, which makes the grinding process of the center guide sleeve more convenient.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

Claims

1. A positioning mechanism for a center guide sleeve, comprising a base (1), characterized in that: A central column (2) is connected to the base (1) via a lifting assembly. A circular groove (3) is provided in the central column (2). Two groups of sliding openings (4) communicating with the circular groove (3) are provided on the circumferential outer wall of the central column (2). A pair of circular discs (5) are arranged in the circular groove (3). A plurality of extensions (6) forming a sliding fit with the sliding openings (4) are provided on the circumferential outer wall of the circular discs (5). Two groups of support rods (7) distributed in a circular array are rotatably connected to the circumferential outer wall of the central column (2). The two groups of support rods (7) are symmetrical to each other. The free ends of the support rods (7) are rotatably connected to a contact plate (10) capable of contacting the inner wall of the central guide sleeve. A connecting rod (8) is rotatably connected to the extension (6). The other end of the connecting rod (8) is rotatably connected to the support rod (7). A bidirectional screw (9) is rotatably connected to the central column (2). The bidirectional screw (9) is threadedly connected to the circular disc (5).

2. A center guide sleeve positioning mechanism according to claim 1, characterized in that: A rubber pad (11) is provided on the upper surface of the contact plate (10).

3. A center guide sleeve positioning mechanism according to claim 1, characterized in that: The lower surface of the contact plate (10) is rotatably connected to a positioning rod (13); the free end of the support rod (7) is provided with a positioning hole (12) having a diameter larger than that of the positioning rod (13); the positioning rod (13) is inserted into the positioning hole (12).

4. A center guide sleeve positioning mechanism according to claim 1, characterized in that: A spring (14) is provided at the end of the contact plate (10), and the other end of the spring (14) is fixed on the support rod (7).

5. A center guide sleeve positioning mechanism according to claim 1, characterized in that: The lifting assembly comprises a vertical plate (15) fixed on the base (1), a sliding sleeve (16) connected to the central column (2) being slidably connected to the vertical plate (15), and an adjusting screw (17) threadedly connected to the sliding sleeve (16) being rotatably connected to the vertical plate (15).

6. A center guide sleeve positioning mechanism according to claim 5, characterized in that: The central column (2) is fixedly connected to the sliding sleeve (16).

7. A center guide sleeve positioning mechanism according to claim 5, characterized in that: The central column (2) is rotatably connected to the sliding sleeve (16); a motor (18) is arranged on the side of the vertical plate (15); an output shaft of the motor (18) is connected to a first gear (19); and a second gear (20) meshing with the first gear (19) is fixedly sleeved on the central column (2).

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