Closed lead screw linear module

Abstract

The utility model discloses a closed lead screw linear module, which belongs to the technical field of linear modules and comprises a ball screw. A ball screw nut is arranged on the outer side of the ball screw; one end of the ball screw is connected into the front bearing seat, the other end of the ball screw is connected into the rear bearing seat, and a ball screw nut is connected with the sliding seat; a sliding frame is arranged on the sliding seat; the sliding frame is provided with a sliding frame cover plate; a gap for a steel belt to slide is formed between the sliding frame and the sliding frame cover plate. The strong magnets are arranged at the front end and the rear end of the sliding seat, the steel belt always has slight downward acting force during operation, and therefore the surface of the base can be sealed in the working state of the linear module. And a steel belt gap formed by the sliding frame cover plate and the cambered surface boss can enable the steel belt to freely bend and operate. Meanwhile, the base and the base side lugs are of a split type section bar and are connected in a matched mode through dovetail grooves, and good plane flatness can be guaranteed without screw locking in the long stroke.

Description

TECHNICAL FIELD

[0001] The utility model relates to a linear module, concretely relates to a closed screw rod linear module, belongs to linear module technical field. BACKGROUND

[0002] At present, the closed linear module mainly adopts steel belt to be closed, utilizes the steel belt to cover the sliding gap on the surface of the module base to play the dustproof effect. The steel belt sealing operation mainly makes the module closed through the rubber-coated roller mode, two rubber-coated rollers support the steel belt, two rubber-coated rollers press the steel belt, and the steel belt is pressed with great force in the reciprocating motion process, and the stress will make the steel belt break, and the rubber-coated roller will also be damaged and grind a large amount of powder. The adhesive-backed magnetic strip is easy to fall off under high temperature and oil pollution, so that the module cannot be closed or cannot be used. At the same time, the patent literature number CN117905860A discloses a small closed linear module, a strip hole is formed on the sliding frame cover in the patent, and the sliding frame cover is installed on the sliding frame in the form of insertion. However, such a sliding frame cover needs to be provided with a hole position according to the size of the sliding frame to complete the installation with the sliding frame, and the production cost is high. Secondly, the base and the base side ear of part of the linear module in the prior art are locked by screws, and the installation process is complicated. Therefore, further improvement is needed. SUMMARY

[0003] The utility model aims at overcoming the above technical insufficient, proposes a kind of closed screw rod linear module, base profile installation is convenient, effectively guarantee flatness, sliding frame cover plate simple structure, reduce production cost, high reliability.

[0004] A closed screw rod linear module, comprising a ball screw; the ball screw nut is provided outside the ball screw; one end of the ball screw is connected in the front bearing seat, the other end is connected in the rear bearing seat, the ball screw nut is connected with the sliding base;The sliding base is provided with a sliding frame;The sliding frame is provided with a sliding frame cover plate;The gap for the sliding of the steel belt is formed between the sliding frame and the sliding frame cover plate.

[0005] Further, the surface of the sliding frame is formed with an arc convex boss;The steel belt support film is attached to the arc convex boss;The steel belt support film is wear-resistant film.

[0006] Further, the sliding frame cover plate is sleeved outside the sliding frame;The sliding frame cover plate has side plates on both sides;The side plates are fixed to the two sides of the sliding frame by bolts.

[0007] Further, the surface of the sliding base is embedded with a powerful magnet;The powerful magnet is located on the front and rear sides of the arc convex boss;The upper surface of the side plate is provided with a connecting hole.

[0008] Further, the bottom of the sliding seat is provided with sliding blocks on both sides; the sliding blocks are slidingly connected to the guide rails.

[0009] Further, the sliding seat, the guide rails and the sliding blocks are in the base; the inner side of the base is provided with base side ears; the base and the base side ears are connected through dovetail groove cooperation; the sliding frame and the sliding seat are connected between the base side ears on both sides; the steel belt is connected to the surface of the base and covers between the base side ears on both sides.

[0010] Further, the front bearing seat is provided with a locking nut for locking the ball screw; the motor and the motor seat are further included; the motor seat is provided with a shaft coupling; one end of the motor seat is connected with the motor and the other end is connected with the ball screw.

[0011] The utility model has the following beneficial effects: the sheet metal sliding frame cover plate is installed on the sliding frame, the side plate of the sliding frame cover plate is connected with the sliding frame, which is convenient and fast; the sliding frame cover plate and the sliding frame do not need to be inserted and fixed, which reduces the production and processing difficulty of the sliding frame cover plate. Strong magnets are arranged at the front and rear ends of the sliding seat, and the steel belt always has slight downward force during operation, so that the surface of the base can be sealed in the working state of the linear module; the gap between the steel belt and the arc convex platform formed by the sliding frame cover plate allows the steel belt to run freely.

[0012] Meanwhile, the base and the base side ear are split profiles and are connected through dovetail groove cooperation, so that good flatness can be ensured without screw locking for long stroke. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a lengthwise cross-sectional structure schematic view of the utility model.

[0014] Fig. 2 It is a widthwise cross-sectional structure schematic view of the utility model.

[0015] Fig. 3 It is a structure schematic view of the utility model.

[0016] Wherein: 1 is a motor, 2 is a shaft coupling, 3 is a motor seat, 4 is a front bearing seat, 5 is a ball screw, 6 is a locking nut, 7 is a ball screw nut, 8 is a sliding frame, 9 is a sliding frame cover plate, 9-1 is a side plate, 9-2 is a connecting hole, 10 is a strong magnet, 11 is a rear bearing seat, 12 is a bearing, 13 is a base, 14 is a base side ear, 15 is a sliding seat, 16 is a guide rail, 17 is a sliding block, 18 is a steel belt supporting film, and 19 is a steel belt. DETAILED DESCRIPTION

[0017] In order to make the utility model purposes, technical scheme and advantages more clearly, the following will be further described in detail with the drawings and examples.

[0018] Referring to Figs. 1-3 The utility model discloses a closed screw linear module, including ball screw 5, ball screw nut 7 is arranged outside ball screw 5, one end of ball screw 5 is connected in front bearing seat 4, and the other end is connected in rear bearing seat 11, ball screw nut 7 is connected with sliding seat 15, sliding seat 15 is provided with sliding frame 8, sliding frame 8 is provided with sliding frame cover plate 9, and the clearance for the sliding of steel band 19 is formed between sliding frame 8 and sliding frame cover plate 9.

[0019] Further, the surface of the sliding frame 8 is formed with an arc convex platform, the arc convex platform is attached with a steel band supporting film 18, and the steel band supporting film 18 is a wear-resistant film.

[0020] The steel band supporting film 18 has a low friction coefficient characteristic and can reduce the friction resistance of the steel band.

[0021] Further, the sliding frame cover plate 9 is sleeved outside the sliding frame 8, both sides of the sliding frame cover plate 9 are provided with side plates 9-1, and the side plates 9-1 are fixed to both sides of the sliding frame 8 through bolts.

[0022] Further, the sliding seat 15 is embedded with a powerful magnet 10 on the surface, the powerful magnet 10 is located on the front and rear sides of the arc convex platform, and the upper surface of the side plate 9-1 is provided with a connecting hole 9-2.

[0023] Further, both sides of the bottom of the sliding seat 15 are provided with sliding blocks 17, and the sliding blocks 17 are slidingly connected to guide rails 16.

[0024] Further, the sliding seat 15, the guide rail 16 and the sliding block 17 are located in a base 13, the inner side of the base 13 is provided with a base side lug 14, the base 13 and the base side lug 14 are connected through dovetail groove cooperation, the sliding frame 8 and the sliding seat 15 are connected between the base side lugs 14 on both sides, and the steel band 19 is connected to the surface of the base 13 and covers between the base side lugs 14 on both sides.

[0025] Further, the front bearing seat 4 is provided with a locking nut 6 for locking the ball screw 5, further includes a motor 1 and a motor base 3, the motor base 3 is provided with a shaft coupling 2, one end of the motor base 3 is connected with the motor 1, and the other end is connected with the ball screw 5.

[0026] Working principle: the steel band 19 is covered between the two side base side ears 14, and forms a closed surface on the base 13, which plays a dustproof effect. When the linear module is in working condition, the ball screw nut 7 is driven by the ball screw 5 to move linearly, and then the slide base 15 and the slide block 17 are driven to move linearly along the guide rail 16 in the base 13. In this process, the sliding frame 8 and the sliding frame cover plate 9 will also move synchronously with the slide base 15, and since the steel band 19 is in the gap between the sliding frame 8 and the sliding frame cover plate 9, the sliding frame 8 and the sliding frame cover plate 9 will move along the steel band 19, and under the action of the strong magnet, a downward force will always be generated on the steel band 19, so that the steel band 19 adheres to the surface of the base 13, and does not interfere with the movement of the slide base 15.

[0027] The sliding frame 8 is used as a mounting carrier of the load, and drives the load to move linearly. After the sliding frame cover plate 9 is installed on the surface of the sliding frame 8, since the surface of the sliding frame cover plate 9 has the connecting hole 9-2, the connecting hole 9-2 directly corresponds to the mounting hole of the sliding frame 8, and can be used for mounting the load.

[0028] The base 13 and the base side ear 14 are connected through dovetail groove matching, and the channel for the movement of the slide base 15 and the sliding frame 8 is formed between the two base side ears 14. This mode adopts the profile formed by splitting, and is connected through dovetail groove matching, without the need of screw locking, which greatly reduces the working strength.

[0029] The specific implementation mode of the above-mentioned utility model does not constitute a limitation on the protection scope of the utility model. Any various other corresponding changes and deformations made according to the technical concept of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A closed-type linear screw module, comprising a ball screw (5); a ball screw nut (7) is provided on the outside of the ball screw (5); one end of the ball screw (5) is connected to the front bearing housing (4), and the other end is connected to the rear bearing housing (11), characterized in that: The ball screw nut (7) is connected to the slide block (15); the slide block (15) is provided with a sliding frame (8); the sliding frame (8) is provided with a sliding frame cover plate (9); a gap is formed between the sliding frame (8) and the sliding frame cover plate (9) for the steel strip (19) to slide.

2. The enclosed linear screw module according to claim 1, characterized in that: The surface of the sliding frame (8) is formed with an arc-shaped protrusion; a steel strip support film (18) is attached to the arc-shaped protrusion; the steel strip support film (18) is a wear-resistant film.

3. A closed-type linear screw module according to claim 2, characterized in that: The sliding frame cover plate (9) is sleeved on the outside of the sliding frame (8); the sliding frame cover plate (9) has side plates (9-1) on both sides; the side plates (9-1) are fixed to the two sides of the sliding frame (8) by bolts.

4. A closed-type linear screw module according to claim 3, characterized in that: A powerful magnet (10) is embedded in the surface of the slide (15); the powerful magnet (10) is located on the front and rear sides of the arc-shaped boss; a connection hole (9-2) is provided on the upper surface of the side plate (9-1).

5. A closed-type linear screw module according to claim 1, characterized in that: The slide block (15) has sliders (17) on both sides of its bottom; the sliders (17) are slidably connected to the guide rail (16).

6. A closed-type linear screw module according to claim 5, characterized in that: The slide (15), guide rail (16) and slider (17) are located inside the base (13); the inner side of the base (13) is provided with a base side ear (14); the base (13) and the base side ear (14) are connected by a dovetail groove; the sliding frame (8) and the slide (15) are connected between the base side ears (14) on both sides; the steel strip (19) is connected to the surface of the base (13) and covers the area between the base side ears (14) on both sides.

7. A closed-type linear screw module according to claim 1, characterized in that: The front bearing housing (4) is provided with a locking nut (6) for locking the ball screw (5); it also includes a motor (1) and a motor housing (3); the motor housing (3) is provided with a coupling (2); one end of the motor housing (3) is connected to the motor (1), and the other end is connected to the ball screw (5).

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