CN218950865U

CN218950865U - Flexible gantry system with elastic pre-pressing function

Info

Publication number: CN218950865U
Application number: CN202223474705.6U
Authority: CN
Inventors: 罗超; 徐凯; 余闯
Original assignee: Suzhou Lieqi Intelligent Equipment Co ltd
Current assignee: Suzhou Lieqi Intelligent Equipment Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-05-02
Anticipated expiration: 2032-12-26

Abstract

The utility model discloses a flexible gantry system with elastic pre-pressing, which comprises a driving side assembly, a driven side assembly and a cross beam; the driving side assembly comprises a first linear guide rail and a linear motor assembly; the driven side assembly comprises a second linear guide rail, a sliding block is arranged on the second linear guide rail, a fixed plate is fixedly connected to the sliding block, a friction plate is movably connected to the fixed plate, an L-shaped connecting plate is fixedly connected to the friction plate, two sides of the fixed plate are provided with baffle plates, a first spring is arranged between the baffle plates and the friction plate, a pre-pressing screw rod penetrating through the L-shaped connecting plate and the friction plate is arranged on the fixed plate, a second spring for providing pre-pressing force for the friction plate is arranged on the pre-pressing screw rod, and the diameters of through holes in the L-shaped connecting plate and the friction plate for the pre-pressing screw rod to penetrate through are larger than the outer diameter of the pre-pressing screw rod; one end of the cross beam is connected with the first linear guide rail and driven by the linear motor assembly, and the other end of the cross beam is fixedly connected with the L-shaped connecting plate.

Description

Flexible gantry system with elastic pre-pressing function

Technical Field

The utility model relates to a flexible gantry system with elastic pre-pressing, and belongs to the technical field of single-drive gantry motion platforms.

Background

At present, three modes of gantry control exist, namely a double-drive gantry, a rigid single-drive gantry and a cantilever gantry; the power and feedback systems are arranged on both sides of the double-drive gantry, so that the control algorithm is difficult and the cost is high; one side of the rigid single-drive gantry is a driving shaft, the other side of the rigid single-drive gantry is a driven shaft, the driven sides are rigidly connected, the movements of the two sides are easy to be asynchronous, torsion is generated after the asynchronous accumulation, the torsion force generated by the guide rails at the two sides is reduced in service life, and in addition, the torsion force generated by the guide rails at the two sides is also caused by the difference of workpieces; one side of the cantilever gantry structure contains power, the other side is not supported, and the unsupported side can shake greatly after high-speed movement, so that the precision is reduced.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a flexible gantry system with elastic pre-pressing, which adopts a single-drive gantry structure, a linear motor is arranged on the driving side, a double guide rail and a grating ruler feedback system are arranged on the driven side, a friction plate is arranged at the installation position, springs are arranged on the two sides and the upper part of the friction plate, the friction plate has a certain pre-pressing force, the precision requirement is reduced during assembly, and the long-term accurate operation of the gantry can be ensured.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a flexible gantry system with elastic pre-pressing comprises a driving side assembly, a driven side assembly and a cross beam; the driving side assembly comprises a first linear guide rail and a linear motor assembly; the driven side assembly comprises a second linear guide rail, a sliding block is arranged on the second linear guide rail, a fixed plate is fixedly connected to the sliding block, a friction plate is movably connected to the fixed plate, an L-shaped connecting plate is fixedly connected to the friction plate, two sides of the fixed plate are provided with baffle plates, a first spring is arranged between the baffle plates and the friction plate, a pre-pressing screw rod penetrating through the L-shaped connecting plate and the friction plate is arranged on the fixed plate, a second spring for providing pre-pressing force for the friction plate is arranged on the pre-pressing screw rod, and the diameters of through holes in the L-shaped connecting plate and the friction plate for the pre-pressing screw rod to penetrate are larger than the outer diameter of the pre-pressing screw rod; one end of the cross beam is connected to the first linear guide rail and driven by the linear motor assembly, and the other end of the cross beam is fixedly connected to the L-shaped connecting plate.

The flexible gantry system of aforesaid elasticity pre-compaction, its characterized in that: the friction plate is provided with a through hole for the pre-pressing screw rod to pass through, the top of the through hole is also provided with a step surface, the pre-pressing screw rod is also sleeved with a contour post, the second spring is sleeved outside the contour post, and the contour post and the bottom surface of the second spring are propped against the step surface.

The flexible gantry system of aforesaid elasticity pre-compaction, its characterized in that: two spring mounting holes for mounting the first springs are formed in two sides of the friction plate.

The flexible gantry system of aforesaid elasticity pre-compaction, its characterized in that: the friction plate is also provided with a thread fixing hole, and the L-shaped connecting plate is fixed on the friction plate through a bolt and the thread fixing hole.

The flexible gantry system of aforesaid elasticity pre-compaction, its characterized in that: and limit stops are arranged at two ends of the second linear guide rail.

The flexible gantry system of aforesaid elasticity pre-compaction, its characterized in that: the number of the pre-pressing screws is two, the pre-pressing screws are diagonally arranged on the L-shaped connecting plate, the number of the bolts is two, and the pre-pressing screws are diagonally arranged on the L-shaped connecting plate.

The beneficial effects of the utility model are as follows:

the friction plate which can move relative to the sliding block is arranged on the driven side, a certain pre-pressure is applied to the friction plate in the horizontal direction and the vertical direction through the spring, and in the assembling process, the assembling error can be compensated through self-adaptively adjusting the position of the friction plate, so that the requirement on the assembling precision is properly reduced, and in the moving process of the cross beam, due to the pre-pressure, the synchronous operation of the two ends of the cross beam in the moving process is ensured.

Drawings

FIG. 1 is a schematic view of a flexible gantry system with elastic preload in accordance with the present utility model;

FIG. 2 is an enlarged schematic view of A in FIG. 1;

FIG. 3 is a cross-sectional view of the utility model at the friction plate of a resiliently preloaded flexible gantry system;

FIG. 4 is a schematic view of the friction plate structure of a flexible gantry system with elastic preload in accordance with the present utility model.

Detailed Description

The utility model will be further described with reference to the drawings.

As shown in fig. 1-4, a flexible gantry system with elastic pre-compression includes a driving side assembly 10, a driven side assembly 20, and a cross beam 40; the active side assembly 10 comprises a first linear guide rail 11 and a linear motor assembly 12; the driven side assembly 20 comprises a second linear guide rail 21, a sliding block 23 is arranged on the second linear guide rail 21, a fixed plate 24 is fixedly connected to the sliding block 23, a friction plate 25 is movably connected to the fixed plate 24, an L-shaped connecting plate 26 is fixedly connected to the friction plate 25, baffle plates 27 are arranged on two sides of the fixed plate 24, a first spring 28 is arranged between the baffle plates 27 and the friction plate 25, a pre-pressing screw 30 penetrating through the L-shaped connecting plate 26 and the friction plate 25 is arranged on the fixed plate 24, a second spring 31 for providing pre-pressing force for the friction plate 25 is arranged on the pre-pressing screw 30, and the diameters of through holes in the L-shaped connecting plate 26 and the friction plate 25 for the pre-pressing screw 30 to penetrate through are larger than the outer diameter of the pre-pressing screw 30; one end of the beam 40 is connected to the first linear guide 11, and is driven by the linear motor assembly 12, and the other end is fixedly connected to the L-shaped connecting plate 26. The friction plate 25 is further provided with a screw fixing hole 252, and the L-shaped connecting plate 26 is fixed on the friction plate 25 through a bolt 29 and the screw fixing hole 252, so that the two are formed into a whole.

One end of the beam 40 is fixed on the driving side assembly 10 to provide power for the driving side assembly, the other section is connected with the sliding block 23 through the friction plate 25, and as the first spring 28 is arranged between the baffle plate 27 and the friction plate 25, a certain pre-pressure of the friction plate 25 in the horizontal direction is ensured, in the process that the driving side assembly 10 drives the beam 40 to drive, the friction plate 25 on the driven side can horizontally move a certain distance relative to the sliding block 23 to buffer, and the driving side assembly is a flexible starting process, and then the driving side assembly is reset by the elastic force of the first spring 28, so that the synchronous movement of the two ends of the beam is ensured under the action of the first spring 28 in the later stage in the beam starting process even if the beam is deviated during the starting process.

In the vertical direction, through setting up pre-compaction screw 30 and second spring 31 on the friction plate, guaranteed that the friction plate has certain precompression in the vertical direction, in the in-process that the friction plate moved along with the slider, once the slope of vertical direction appears, can compensate through second spring 31, avoid appearing the dead phenomenon of card in the crossbeam removal in-process. Since the diameter of the through hole of the friction plate 25 for the pre-pressing screw 30 to pass through is larger than the outer diameter of the pre-pressing screw 30, the friction plate 25 can be ensured to move horizontally to a certain extent without being influenced by the pre-pressing screw 30.

Two spring mounting holes 251 for mounting the first springs 28 are formed on both sides of the friction plate 25, so that the friction plate 25 can rotate in a certain direction in the horizontal direction. The number of the pre-pressing screws 30 is two, the pre-pressing screws are diagonally arranged on the L-shaped connecting plate 26, the number of the bolts 29 is two, and the pre-pressing screws are diagonally arranged on the L-shaped connecting plate 26, so that the friction plate 25 can rotate in a certain direction in the vertical direction. Therefore, the friction plate 25 can be compensated in a certain amount in the X/Y/Z axis direction, and the requirement on precision is not very high when the whole gantry system is assembled, namely, the first linear guide rail can be in certain amount of non-parallelism relative to the second linear guide rail.

The friction plate 25 is provided with a through hole 253 for the pre-pressing screw 30 to pass through, the top of the through hole 253 is also provided with a step surface 254, the pre-pressing screw 30 is also sleeved with a contour post 32, the second spring 31 is sleeved outside the contour post 32, and the contour post 32 and the bottom surface of the second spring 31 are both propped against the step surface 254.

The length of each pre-pressing screw rod 30 can be ensured by arranging the equal-height columns 32, namely, the compressed distance of all the second springs 31 is ensured to be equal, namely, the pre-pressing force in the vertical direction is kept consistent, and on the other hand, a certain locking force is arranged between the pre-pressing screw rods 30 by locking the pre-pressing screw rods 30 on the equal-height columns 32, so that the pre-pressing screw rods 30 cannot loosen in the later gantry running process.

The two ends of the second linear guide rail 21 are provided with limit stops 22, and the limit stops 22 trigger the transverse beam to reciprocate left and right.

In summary, the utility model provides a flexible gantry system with elastic pre-pressing, which adopts a single-drive gantry structure, a linear motor is arranged on the driving side, a double guide rail and a grating ruler feedback system are arranged on the driven side, a friction plate is arranged at the installation position, springs are arranged on both sides and the upper part of the friction plate, a certain pre-pressing force is provided for the friction plate, the precision requirement is reduced during assembly, and the long-term accurate operation of the gantry can be ensured.

The foregoing has outlined and described the basic principles, features, and advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A flexible gantry system of elasticity pre-compaction, characterized in that: comprises a driving side assembly (10), a driven side assembly (20) and a cross beam (40);

the driving side assembly (10) comprises a first linear guide rail (11) and a linear motor assembly (12);

the driven side assembly (20) comprises a second linear guide rail (21), a sliding block (23) is arranged on the second linear guide rail (21), a fixed plate (24) is fixedly connected to the sliding block (23), a friction plate (25) is movably connected to the fixed plate (24), an L-shaped connecting plate (26) is fixedly connected to the friction plate (25), baffles (27) are arranged on two sides of the fixed plate (24), a first spring (28) is arranged between the baffles (27) and the friction plate (25), a pre-pressing screw (30) penetrating through the L-shaped connecting plate (26) and the friction plate (25) is arranged on the fixed plate (24), a second spring (31) for providing pre-pressing force for the friction plate (25) is arranged on the pre-pressing screw (30), and the diameter of a through hole for the pre-pressing screw (30) to penetrate through is larger than the outer diameter of the pre-pressing screw (30) on the L-pressing connecting plate (26) and the friction plate (25);

one end of the cross beam (40) is connected to the first linear guide rail (11), and is driven by the linear motor assembly (12), and the other end of the cross beam is fixedly connected to the L-shaped connecting plate (26).

2. A resiliently preloaded flexible gantry system according to claim 1, characterized in that: be provided with on friction plate (25) confession through-hole (253) that precompaction screw rod (30) passed, just the top of through-hole (253) still is provided with step face (254), just still overlap on precompaction screw rod (30) and be equipped with contour post (32), second spring (31) suit is in contour post (32) are outer, just contour post (32) with the bottom surface of second spring (31) all supports and leans on step face (254).

3. A resiliently preloaded flexible gantry system according to claim 1 or 2, characterized in that: two spring mounting holes (251) for mounting the first springs (28) are formed in two sides of the friction plate (25).

4. A resiliently preloaded flexible gantry system according to claim 3, characterized in that: the friction plate (25) is further provided with a threaded fixing hole (252), and the L-shaped connecting plate (26) is fixed on the friction plate (25) through a bolt (29) and the threaded fixing hole (252).

5. A resiliently preloaded flexible gantry system according to claim 1, characterized in that: limit stops (22) are arranged at two ends of the second linear guide rail (21).

6. A resiliently preloaded flexible gantry system as claimed in claim 4, wherein: the number of the pre-pressing screws (30) is two, the pre-pressing screws are diagonally arranged on the L-shaped connecting plate (26), the number of the bolts (29) is two, and the pre-pressing screws are diagonally arranged on the L-shaped connecting plate (26).