Adjustable lead screw supporting seat

Abstract

The utility model provides an adjustable lead screw supporting seat which belongs to the technical field of couplings and comprises a base and a self-centering clamping mechanism, a fixing hole is formed in the base in a penetrating mode, a plurality of bearings are fixedly connected to the inner wall of the fixing hole, rotating sleeves are fixedly connected to the inner surfaces of the bearings, the two ends of each rotating sleeve extend to the outer portion of the base, and the self-centering clamping mechanism is arranged on the base. And self-centering clamping mechanisms are arranged at the two ends of the rotating sleeve. The self-centering clamping mechanism is arranged and comprises the driving clamping plate, the driven clamping plate, the sliding block, the sliding plate, the threaded rod and the like, the driving clamping plate moves in the radial direction by rotating the threaded rod, the driving clamping plate and the driven clamping plate synchronously move in the radial direction through cooperation of the driving clamping plate, the sliding plate, the sliding block, the driven clamping plate and the like, the clamping steps can be simplified, and the clamping efficiency is improved. A part needing to be clamped is positioned in the dead center of a circle, so that shaft parts clamped at the two ends of the rotating sleeve are located on the same axis, and the rotating sleeve has good stability when rotating.

Description

Technical Field

[0001] The utility model belongs to the technical field of couplings, and in particular relates to an adjustable screw rod support seat. Background Art

[0002] The screw support seat is a coupling used to support and connect the screw and the motor shaft. In the actual production and processing process, there are many types of screw specifications, and different screws have different diameters, and the existing screw support seat is difficult to adapt to screws of different specifications.

[0003] The existing patent for "a screw support seat with adjustable aperture" with publication number "CN216504684U" includes a base, which is provided with a fixing hole passing through the base, a rotating sleeve, which is rotatably arranged in the fixing hole, and its two ends extend to the outside of the base, and two radial fixings, which are respectively arranged at the two inner ends of the rotating sleeve, wherein the radial fixings can move radially along the rotating sleeve to clamp screws of different specifications. When in use, screws of different specifications are inserted into the rotating sleeve, and then the two ends of the screw are clamped respectively by the two radial fixings, thereby realizing the connection of screws of different specifications.

[0004] However, the above-mentioned screw support seat still has some shortcomings during actual use: when the device clamps the screw, it is necessary to rotate the three adjusting screws separately to make the three clamping plates clamp the screw, which is rather troublesome. In addition, the three adjusting screws are independent of each other, and it is impossible to accurately control the radial movement of the three clamping plates to be equal when clamping the screw, so that the axes of the shaft rod clamped by the two ends of the rotating sleeve coincide with each other, and the stability is poor when the rotating sleeve rotates. Utility Model Content

[0005] The utility model aims to solve the problems in the prior art that the clamping process is not simple enough and the stability of the rotating sleeve is poor when rotating, and proposes an adjustable screw support seat.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An adjustable screw support seat comprises a base and a self-centering clamping mechanism, wherein a fixing hole is formed through the base, a plurality of bearings are fixedly connected to the inner wall of the fixing hole, a rotating sleeve is fixedly connected to the inner surface of the bearing, both ends of the rotating sleeve extend to the outside of the base, and both ends of the rotating sleeve are provided with a self-centering clamping mechanism;

[0008] The self-centering clamping mechanism comprises an active splint, a driven splint, a slider and a slide plate, wherein cross sections at both ends of the rotating sleeve are provided with a first slide groove and a second slide groove, and the first slide groove and the second slide groove are provided with six and are distributed in an alternating annular array on the cross section, one end of the first slide groove is communicated with the inner hole of the rotating sleeve, the three sliders are slidably connected with the first slide groove, and there is a first slide groove vacant between two adjacent sliders, one active splint and two driven splints are slidably connected with the remaining three first slide grooves respectively, the slide plates have six and a sliding rod is fixedly connected at the middle position, both ends of the sliding rod are slidably connected with the second slide groove, one end of the slide plate is slidably connected with the slider, the other end close to the active splint is slidably connected with it, and the other end close to the driven splint is slidably connected with it, and the adjacent ends of the two slide plates overlap, contact and are slidably connected;

[0009] One end of the active splint extends outward through the rotating sleeve, a threaded hole is opened at the outer end of the active splint, a fixed plate is fixedly connected to the surface of the rotating sleeve at the active splint, a threaded rod is rotatably connected to the top center of the fixed plate, the threaded rod is threadedly connected to the threaded hole in the active splint, and a rotating rod is fixedly connected to the top of the threaded rod.

[0010] Preferably, the two ends of the rotating sleeve extending out of the base have the same length, and the two self-centering clamping mechanisms are symmetrically arranged at the two ends of the rotating sleeve.

[0011] Preferably, the distances between the plurality of bearings are equal, and the rotating sleeve can rotate in the base through the bearings.

[0012] Preferably, the end surfaces of the active clamping plate and the driven clamping plate close to the inner hole of the rotating sleeve are arc-shaped.

[0013] Preferably, the surface of the threaded rod is located inside a fixing plate and is fixedly connected to a limiting plate, and the limiting plate rotates along with the rotation of the threaded rod.

[0014] Preferably, a baffle is fixedly connected to one end of the second sliding groove close to the inner hole of the rotating sleeve.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The utility model sets a self-centering clamping mechanism, including an active clamping plate, a driven clamping plate, a slider, a slide plate and a threaded rod, etc. The active clamping plate is radially moved by rotating the threaded rod, and the active clamping plate and the driven clamping plate are synchronously moved radially through the cooperation among the active clamping plate, the slide plate, the slider and the driven clamping plate, so that the clamping steps can be simplified, the required clamping parts can be positioned at the center of the circle, the shaft parts clamped at both ends of the rotating sleeve are on the same axis, and the rotating sleeve has better stability when rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the adjustable screw support seat proposed by the utility model;

[0018] Figure 2 A cross-sectional schematic diagram of the adjustable screw support seat proposed by the utility model;

[0019] Figure 3 This is a structural schematic diagram of the self-centering clamping mechanism of the adjustable screw support seat proposed by the utility model.

[0020] In the figure: 1 base, 2 bearing, 3 rotating sleeve, 4 active clamping plate, 5 driven clamping plate, 6 slider, 7 slide plate, 8 first slide groove, 9 second slide groove, 10 slide rod, 11 fixed plate, 12 threaded rod, 13 rotating rod. DETAILED DESCRIPTION

[0021] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Reference Figure 1-Figure 3 , an adjustable screw support seat, including a base 1 and a self-centering clamping mechanism, a fixing hole is penetrated through the base 1, a plurality of bearings 2 are fixedly connected to the inner wall of the fixing hole, a rotating sleeve 3 is fixedly connected to the inner surface of the bearing 2, the distances between the plurality of bearings 2 are equal, the rotating sleeve 3 can rotate in the base 1 through the bearing 2, both ends of the rotating sleeve 3 extend to the outside of the base 1, both ends of the rotating sleeve 3 are provided with a self-centering clamping mechanism, the two ends of the rotating sleeve 3 extending out of the base 1 are the same length, and the two self-centering clamping mechanisms are symmetrically arranged at both ends of the rotating sleeve 3;

[0023] The self-centering clamping mechanism includes an active clamping plate 4, a driven clamping plate 5, a slider 6 and a slide plate 7. The cross sections at both ends of the rotating sleeve 3 are provided with a first slide groove 8 and a second slide groove 9. There are six first slide grooves 8 and second slide grooves 9 and they are distributed in an alternating annular array on the cross section. One end of the first slide groove 8 is connected to the inner hole of the rotating sleeve 3, and the end of the second slide groove 9 close to the inner hole of the rotating sleeve 3 is fixedly connected to a baffle. The three slide blocks 6 are all slidably connected to the first slide groove 8 and there is a first slide groove 8 between two adjacent slide blocks 6. An active clamping plate 4 and two driven clamping plates 5 are respectively connected to the other three The first slide groove 8 is slidably connected, and the end surface of the active splint 4 and the driven splint 5 close to the inner hole of the rotating sleeve 3 is arc-shaped, which can increase the contact area between the active splint 4 and the driven splint 5 and the outer wall of the screw rod. There are six slide plates 7 and a slide rod 10 is fixedly connected at the middle position. Both ends of the slide rod 10 are slidably connected with the second slide groove 9. One end of the slide plate 7 is connected to the slider 6 through the sliding connection, the other end close to the active splint 4 is connected to the sliding connection through the sliding connection, and the other end close to the driven splint 5 is connected to the sliding connection through the sliding connection. The adjacent ends of the two slide plates 7 overlap, contact and are slidably connected;

[0024] One end of the active splint 4 passes through the rotating sleeve 3 and extends outward. A threaded hole is opened at the outer end of the active splint 4. The surface of the rotating sleeve 3 is located at the active splint 4 and is fixedly connected to a fixing plate 11. The top center of the fixing plate 11 is rotatably connected to a threaded rod 12. The threaded rod 12 is threadedly connected to the threaded hole in the active splint 4. The top of the threaded rod 12 is fixedly connected to a rotating rod 13. The surface of the threaded rod 12 is located in the fixing plate and is fixedly connected to a limiting plate. The limiting plate rotates with the rotation of the threaded rod 12, and at the same time, the limiting plate limits the axial movement of the threaded rod 12.

[0025] The active clamping plate 4 is moved radially by rotating the threaded rod 12, and the active clamping plate 4 and the driven clamping plate 5 are moved radially synchronously by the cooperation among the active clamping plate 4, the slide plate 7, the slider 6 and the driven clamping plate 5 in the self-centering clamping mechanism. This can simplify the clamping steps, position the required clamping parts at the exact center of the circle, and make the shaft parts clamped at both ends of the rotating sleeve 3 on the same axis, so that the rotating sleeve 3 has better stability when rotating.

[0026] The functional principle of the utility model can be explained through the following operation modes:

[0027] When in use, firstly, the threaded rod 12 on the end surface of the rotating sleeve 3 is rotated to a suitable position through the rotating rod 13, so that the active clamping plate 4 moves to the maximum position outside the rotating sleeve 3. At this time, the diameter of the screw rod that can be clamped is the largest, and then the screw rod passes through the interior of the rotating sleeve 3 and is located between the active clamping plate 4 and the driven clamping plate 5, and the threaded rod 12 is rotated again through the rotating rod 13, so that the active clamping plate 4 moves radially toward the interior of the rotating sleeve 3 along the first sliding groove 8. At the same time, the radial movement of the active clamping plate 4 drives the slide plates 7 slidably connected to it on both sides to move radially along the second sliding groove 9 through the sliding rod 10, and the slide plate 7 drives the slide block 6 slidably connected to the other end thereof to move radially along the first sliding groove 8, and the slide block 6 drives the driven clamping plate 5 to move radially through the slide plate 7, so that the active clamping plate 4 and the driven clamping plate 5 synchronously move radially toward the interior of the rotating sleeve 3 in the first sliding groove 8, thereby clamping the screw rod at the exact center position of the circle;

[0028] By rotating a threaded rod 12 to make the active clamping plate 4 and the driven clamping plate 5 move synchronously, the screw clamping process can be simplified, and the shaft components clamped at both ends of the rotating sleeve 3 can be on the same axis, so that the rotating sleeve 3 has better stability when rotating.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An adjustable screw support seat, comprising a base (1) and a self-centering clamping mechanism, characterized in that: The base (1) is provided with a fixing hole, the inner wall of the fixing hole is fixedly connected to a plurality of bearings (2), the inner surface of the bearing (2) is fixedly connected to a rotating sleeve (3), both ends of the rotating sleeve (3) extend to the outside of the base (1), and both ends of the rotating sleeve (3) are provided with a self-centering clamping mechanism; The self-centering clamping mechanism comprises an active clamping plate (4), a driven clamping plate (5), a slider (6) and a slide plate (7); the cross sections at both ends of the rotating sleeve (3) are provided with a first slide groove (8) and a second slide groove (9); six first slide grooves (8) and six second slide grooves (9) are provided and are distributed in an alternating annular array on the cross section; one end of the first slide groove (8) is connected to the inner hole of the rotating sleeve (3); the three sliders (6) are all slidably connected to the first slide groove (8) and there is a first slide groove (8) between two adjacent sliders (6); and one The active clamping plate (4) and the two driven clamping plates (5) are respectively slidably connected to the other three first sliding grooves (8); there are six slide plates (7) and a sliding rod (10) is fixedly connected at the middle position; both ends of the sliding rod (10) are slidably connected to the second sliding grooves (9); one end of the slide plate (7) is slidably connected to the slider (6); the other end close to the active clamping plate (4) is slidably connected to the slider; the other end close to the driven clamping plate (5) is slidably connected to the slider; the adjacent ends of the two slide plates (7) overlap, contact and are slidably connected; One end of the active splint (4) passes through the rotating sleeve (3) and extends outward, a threaded hole is formed at the outer end of the active splint (4), a fixed plate (11) is fixedly connected to the surface of the rotating sleeve (3) at the active splint (4), a threaded rod (12) is rotatably connected to the top center of the fixed plate (11), the threaded rod (12) is threadedly connected to the threaded hole in the active splint (4), and a rotating rod (13) is fixedly connected to the top of the threaded rod (12).

2. The adjustable screw support seat according to claim 1, characterized in that: The two ends of the rotating sleeve (3) extending out of the base (1) have the same length, and the two self-centering clamping mechanisms are symmetrically arranged at the two ends of the rotating sleeve (3).

3. The adjustable screw support seat according to claim 1, characterized in that: The distances between the multiple bearings (2) are equal, and the rotating sleeve (3) can rotate in the base (1) through the bearings (2).

4. The adjustable screw support according to claim 1, characterized in that: The surfaces of one end of the active clamping plate (4) and the driven clamping plate (5) close to the inner hole of the rotating sleeve (3) are arc-shaped.

5. The adjustable screw support seat according to claim 1, characterized in that: The surface of the threaded rod (12) is located inside the fixing plate and is fixedly connected to a limiting plate, and the limiting plate rotates along with the rotation of the threaded rod (12).

6. The adjustable screw support seat according to claim 1, characterized in that: One end of the second sliding groove (9) close to the inner hole of the rotating sleeve (3) is fixedly connected to a baffle.

Images