Totally-closed linear motor sliding table structure

Abstract

The utility model relates to a totally-enclosed linear motor sliding table structure, which comprises a base, a steel belt, a rotor seat and a sliding seat, the base is provided with an inner cavity and a guide seam communicated with the inner cavity; the rotor seat is slidably mounted in the inner cavity through a sliding assembly, one end of the sliding seat is fixedly connected with the rotor seat, and the other end of the sliding seat protrudes out of the base through the guide seam to form a workbench. The two ends of the workbench are each provided with a tensioning mechanism. The two ends of the steel belt are fixed to the base and cover the guide seam, and the steel belt is tensioned through the two tensioning mechanisms and used for dynamically sealing the guide seam. The top of the workbench is further provided with a protective cover, and the protective cover covers the two tensioning mechanisms. According to the utility model, the steel belt and the two groups of tensioning mechanisms are arranged, and the two groups of tensioning mechanisms enable the steel belt to be always tensioned and dynamically seal the base when the rotor seat reciprocates, so that a totally-closed sliding table structure is formed, and the sliding table is suitable for dust-free workshops and precision workshops.

Description

Technical Field

[0001] This utility model relates to the field of linear slide table technology, and in particular discloses a fully enclosed linear motor slide table structure. Background Technology

[0002] Linear motor slide modules are widely used in semiconductor equipment, precision machine tools, and other fields due to their high precision and high response characteristics. Traditional linear motors generally adopt a semi-enclosed structure, and the friction between the guide rails and sliders inevitably generates dust, making them unsuitable for harsh cleanroom environments and failing to meet customers' cleanroom requirements. Fully enclosed linear motors, based on traditional linear motors, completely enclose the motor's core components such as the mover and stator through structures such as sealing rings and sealing covers, isolating them from external contaminants and preventing dust generated during slide operation from being dispersed into the environment.

[0003] Armor-type protective covers and flexible sealing strips are two commonly used sealing and protection technologies in enclosed linear motors, effectively improving the equipment's dust and dirt resistance. However, due to limitations in structural design and material properties, they also have certain drawbacks. For example, armor-type protective covers are usually made of metal materials such as stainless steel sheets and steel plates, which inevitably increases the overall weight of the slide table. This forces the linear motor's mover to overcome the inertia of the protective cover during movement, affecting high-speed response performance. Especially in scenarios with frequent starts and stops or high-speed reciprocating motion, this increases the motor's energy consumption and workload. Flexible sealing strips are mostly made of non-metallic materials such as rubber, PVC, and canvas, which are prone to aging, hardening, or deformation, leading to a decrease in sealing performance. In addition, sharp debris may scratch the surface of the sealing strip, compromising its protective effect. Therefore, it is necessary to develop a new type of fully enclosed linear motor slide table structure. Utility Model Content

[0004] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a fully enclosed linear motor slide structure.

[0005] To achieve the above objectives, this utility model provides a fully enclosed linear motor slide structure, comprising a base, a steel belt, a mover seat, and a slide. The base has an inner cavity and a guide slot communicating with the inner cavity. The mover seat is slidably installed in the inner cavity via a sliding assembly. One end of the slide is fixedly connected to the mover seat, and the other end of the slide protrudes from the base via the guide slot. Each end of the slide is provided with a tensioning mechanism. Both ends of the steel belt are fixed to the base and cover the guide slot. The steel belt is tensioned by two sets of tensioning mechanisms to dynamically seal the guide slot. The slide also has a protective cover covering the slide and the two sets of tensioning mechanisms.

[0006] Furthermore, the two sets of tensioning mechanisms are parallel and coplanar, each set of tensioning mechanisms includes a first roller and a second roller that are parallel and coplanar, and the first rollers of the two sets of tensioning mechanisms are arranged close to each other, while the second rollers of the two sets of tensioning mechanisms are arranged far apart from each other; the lower surface of the steel strip passes through the two first rollers in sequence to form a raised section that spans the top of the slide block; the two second rollers are located at both ends of the raised section, and the second rollers press against the upper surface of the raised section; the first rollers and the second rollers are located on both sides of the steel strip, so that the raised section is tensioned and closely attached to the top of the slide block.

[0007] Furthermore, the slide block is provided with a recessed receiving groove, and the first roller is installed in the receiving groove via the first shaft. The wheel body of the first roller protrudes from the receiving groove to support the raised section of the steel strip. The protective cover is provided with mounting holes on both sides, and the second shaft of the second roller is inserted into the two mounting holes so that the second roller is installed inside the protective cover. The first roller and the second roller rotate around the first shaft and the second shaft, respectively.

[0008] Furthermore, the first roller and the second roller have a rubber layer on their surfaces.

[0009] Furthermore, the slide has guide ramps at both ends for guiding the steel strip.

[0010] Furthermore, the base includes a base plate, two end plates mounted on the base plate, and two side sealing plates, which together form an inner cavity; the side of the two side sealing plates away from the base plate bends and extends into the inner cavity to form a horizontal flange, and a guide seam is formed between the two horizontal flanges; the two ends of the steel strip are respectively fixed to the end plates by pressure plates.

[0011] Furthermore, the horizontal flange has a supporting surface on the side near the guide seam, and the supporting surfaces of the two horizontal flanges are respectively used to support the two sides of the steel strip.

[0012] Furthermore, the base plate has a hollow, perforated structure for weight reduction and pipeline layout.

[0013] Furthermore, both end plates are provided with buffer components on the side facing the moving part.

[0014] Furthermore, the base is also equipped with an air pipe connector.

[0015] The beneficial effects of this utility model are as follows: This utility model uses a steel belt in conjunction with the first and second rollers in two sets of tensioning mechanisms to enable the steel belt to dynamically seal the base as the moving seat reciprocates, forming a fully enclosed slide structure, which is suitable for cleanrooms and precision workshops. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a fully enclosed linear motor slide table according to the present invention;

[0017] Figure 2 This is a partial structural schematic diagram of the present invention;

[0018] Figure 3 This is a partial structural schematic diagram of the present invention;

[0019] Figure 4 This is a schematic diagram of the disassembled structure of this utility model.

[0020] The reference numerals in the attached drawings include: 1. Base; 11. Base plate; 12. End plate; 13. Side sealing plate; 14. Horizontal flange; 15. Pressure plate; 16. Slot; 2. Steel strip; 21. Raised section; 3. Moving seat; 4. Slide; 41. Worktable; 42. Receiving groove; 43. Guide slope; 5. Guide slot; 6. Sliding assembly; 71. First roller; 72. Second roller; 8. Protective cover; 81. Mounting hole; 9. Air pipe connector. Detailed Implementation

[0021] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0022] Please see Figures 1 to 4 As shown, the present invention discloses a fully enclosed linear motor slide structure, comprising a base 1, a steel belt 2, a mover seat 3, and a slide 4. The base 1 has an inner cavity and a guide slot 5 communicating with the inner cavity. The mover seat 3 is slidably installed in the inner cavity via a sliding assembly 6. One end of the slide 4 is fixedly connected to the mover seat 3, and the other end of the slide 4 protrudes from the base 1 via the guide slot 5 to form a worktable 41. A set of tensioning mechanisms is provided at both ends of the worktable 41. The two ends of the steel belt 2 are fixed to the base 1 and cover the guide slot 5. The steel belt 2 is tensioned by two sets of tensioning mechanisms to dynamically seal the guide slot 5. A protective cover 8 is also provided on the top of the worktable 41, which covers the two sets of tensioning mechanisms.

[0023] In actual use, a guide slot 5 is opened at the top of the base 1, and the worktable 41 extends out from the guide slot 5 and slides along the guide slot 5. The width of the part of the worktable 41 inside the cavity of the base 1 is smaller than that of the guide slot 5, and the width of the part of the worktable 41 outside the cavity of the base 1 is larger than that of the guide slot 5, but narrower than that of the base 1. The steel belt 2 is located on the top of the worktable 41 and is clamped tightly against the worktable 41 by two sets of tensioning mechanisms to form a sealed structure. The steel belt 2 passes through the two sets of tensioning mechanisms in sequence and is located between the protective cover 8 and the worktable 41. When the worktable 41 reciprocates, the steel belt 2 shuttles between the two sets of tensioning mechanisms relative to the worktable 41.

[0024] Specifically, the two sets of tensioning mechanisms are parallel and coplanar. Each set of tensioning mechanisms includes a first roller 71 and a second roller 72 that are parallel and coplanar. The first rollers 71 of the two sets of tensioning mechanisms are arranged close to each other, and the second rollers 72 of the two sets of tensioning mechanisms are arranged far apart from each other. The lower surface of the steel belt 2 passes through the two first rollers 71 in sequence to form a raised section 21 that spans the top of the workbench 41. The two second rollers 72 are located at both ends of the raised section 21, and the second rollers 72 press against the upper surface of the raised section 21. The first rollers 71 and the second rollers 72 are located on both sides of the steel belt 2, so that the raised section 21 is tensioned and closely attached to the top of the slide block 4.

[0025] In actual use, the steel belt 2 passes sequentially through the second roller 72, the first roller 71, the first roller 71, and the second roller 72 of the first tensioning mechanism. The first roller 71 is located below the steel belt 2, and the two first rollers 71 arch the steel belt 2 to form a raised section 21. The second roller 72 is located above the steel belt 2 at the end of the raised section 21, pressing the steel belt 2 down so that the steel belt 2 is tightly attached to the worktable 41 to form a sealed structure and avoid the formation of gaps.

[0026] Specifically, the workbench 41 is provided with a recessed receiving groove 42, and the first roller 71 is installed in the receiving groove 42 via the first shaft. The wheel body of the first roller 71 protrudes from the receiving groove 42 to support the raised section 21 of the steel belt 2.

[0027] In actual use, each end of the workbench 41 is provided with a receiving groove 42, and the first rollers 71 of the two sets of tensioning mechanisms are respectively set in the receiving groove 42. The receiving groove 42 has a bottom wall and two side walls. The bottom wall is provided with a through hole, and the height of the two side walls is less than the width of the wheel body, so that the wheel body protrudes out of the receiving groove 42 and supports the steel belt 2 to form a raised section 21.

[0028] Specifically, the two ends of the protective cover 8 protrude from the two ends of the workbench 41, and a mounting cavity for mounting the second roller 72 is formed between the end of the protective cover 8 and the end of the workbench 41. The mounting cavity is provided with a mounting hole 81, and the second roller 72 has a second shaft. The second shaft is inserted into the mounting hole 81 so that the second roller 72 is mounted on the protective cover 8.

[0029] In actual use, the length of the protective cover 8 is longer than the length of the workbench 41, that is, an installation cavity is formed between the end of the protective cover 8 and the end of the workbench 41. The second roller 72 of the tensioning mechanism is installed in the installation cavity, so that the first roller 71 and the second roller 72 are on the same horizontal plane, and the second roller 72 is located outside the workbench 41. After the steel belt 2 is raised by the first roller 71, the part of the steel belt 2 that extends out of the workbench 41 is pressed by the second roller 72 and closely adheres to the workbench 41.

[0030] Specifically, the first roller 71 and the second roller 72 each have two roller units, and the two roller units cooperate to support both sides of the steel belt 2.

[0031] The first roller 71 and the second roller 72 can be a large roller unit that supports or presses down on the steel belt 2 from the width direction. In actual use, the first roller 71 and the second roller 72 are two lighter roller units, which are installed at both ends of the first shaft or the second shaft to support both ends of the steel belt 2.

[0032] Specifically, the surfaces of the first roller 71 and the second roller 72 have a sound-absorbing layer.

[0033] In actual use, the outer layer of the roller unit is covered with a sound-absorbing layer, which can prevent the roller unit from making noise when it comes into contact with the steel belt 2.

[0034] Specifically, the workbench 41 has guide ramps 43 at both ends for guiding the steel strip 2.

[0035] In actual use, the receiving groove 42 has two side walls, one of which is shorter than the other side wall. The end of the worktable 41 is an oblique extension of the shorter side wall, forming a guide slope 43. After the steel strip 2 passes through the guide slope 43, it is pressed by the second roller 72 to avoid the formation of a gap between the steel strip 2 and the worktable 41.

[0036] Specifically, the base 1 includes a base plate 11, two end plates 12 and two side sealing plates 13 mounted on the base plate 11, the base plate 11, the two end plates 12 and the two side sealing plates 13 enclose an inner cavity; the two side sealing plates 13 have a body and a horizontal flange 14 formed by bending and extending from the body, and a guide seam 5 is formed between the two horizontal flanges 14; the two ends of the steel strip 2 are respectively fixed to the end plates 12 via pressure plates 15.

[0037] In actual use, the end plate 12 and the side sealing plate 13 are installed on the base plate 11, and the free ends of the two side sealing plates 13 are bent vertically towards each other to form a horizontal flange 14.

[0038] Specifically, the horizontal flange 14 has a groove 16 on the side near the guide seam 5, and the grooves 16 of the two horizontal flanges 14 are respectively used to support the two sides of the steel strip 2.

[0039] In actual use, the horizontal flange 14 is provided with a groove 16 that is recessed downward from the body on the side near the guide seam 5, and the two sides of the steel strip 2 are respectively located on the two recessed grooves 16.

[0040] Specifically, the base 1 is also provided with an air pipe connector 9, which is used to connect to an external negative pressure source to create a negative pressure environment in the inner cavity of the base 1, and the steel strip 2 is tightly fitted to the base 1.

[0041] In actual use, the air pipe connector 9 is installed on the end plate 12.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A fully enclosed linear motor slide structure, characterized in that: The system includes a base (1), a steel belt (2), a moving seat (3), and a slide (4); the base (1) has an inner cavity and a guide slot (5) communicating with the inner cavity; the moving seat (3) is slidably installed in the inner cavity via a sliding assembly (6), one end of the slide (4) is fixedly connected to the moving seat (3), and the other end of the slide (4) protrudes from the base (1) via the guide slot (5) to form a worktable (41); a set of tensioning mechanisms is provided at both ends of the worktable (41); both ends of the steel belt (2) are fixed on the base (1) and cover the guide slot (5), and the steel belt (2) is tensioned by two sets of tensioning mechanisms to dynamically seal the guide slot (5); a protective cover (8) is also provided on the top of the worktable (41), and the protective cover (8) covers the two sets of tensioning mechanisms.

2. The fully enclosed linear motor slide structure according to claim 1, characterized in that: The two sets of tensioning mechanisms are parallel and coplanar. Each set of tensioning mechanisms includes a first roller (71) and a second roller (72) that are parallel and coplanar. The first rollers (71) of the two sets of tensioning mechanisms are arranged close to each other, and the second rollers (72) of the two sets of tensioning mechanisms are arranged far apart from each other. The lower surface of the steel belt (2) passes through the two first rollers (71) in sequence to form a raised section (21) that spans the worktable (41). The two second rollers (72) are located at both ends of the raised section (21) and press against the upper surface of the raised section (21). The first rollers (71) and the second rollers (72) are located on both sides of the steel belt (2) to make the raised section (21) tensioned and close to the top of the slide (4).

3. The fully enclosed linear motor slide structure according to claim 2, characterized in that: The workbench (41) is provided with a recessed receiving groove (42). The first roller (71) is installed in the receiving groove (42) via the first shaft. The wheel body of the first roller (71) protrudes from the receiving groove (42) to support the raised section (21) of the steel belt (2).

4. The fully enclosed linear motor slide structure according to claim 2, characterized in that: The protective cover (8) extends out of the two ends of the workbench (41). The end of the protective cover (8) and the end of the workbench (41) form a mounting cavity for mounting the second roller (72). The mounting cavity is provided with mounting holes (81). The second roller (72) has a second shaft. The second shaft is inserted into the mounting hole (81) so that the second roller (72) is mounted on the protective cover (8).

5. The fully enclosed linear motor slide structure according to claim 2, characterized in that: The first roller (71) and the second roller (72) each have two roller units, which work together to support both sides of the steel belt (2).

6. The fully enclosed linear motor slide structure according to claim 2, characterized in that: The first roller (71) and the second roller (72) have a sound-absorbing layer on their surfaces.

7. The fully enclosed linear motor slide structure according to claim 1, characterized in that: The workbench (41) has guide ramps (43) at both ends for guiding the steel strip (2).

8. The fully enclosed linear motor slide structure according to claim 1, characterized in that: The base (1) includes a base plate (11), two end plates (12) mounted on the base plate (11) and two side sealing plates (13). The base plate (11), the two end plates (12) and the two side sealing plates (13) enclose an inner cavity. The two side sealing plates (13) have a body and a horizontal flange (14) formed by bending and extending from the body. A guide seam (5) is formed between the two horizontal flanges (14). The two ends of the steel strip (2) are fixed to the end plates (12) by pressure plates (15).

9. The fully enclosed linear motor slide structure according to claim 8, characterized in that: Each of the horizontal flanges (14) has a groove (16) on the side near the guide seam (5), and the grooves (16) of the two horizontal flanges (14) are used to support the two sides of the steel strip (2).

10. The fully enclosed linear motor slide structure according to claim 1, characterized in that: The base (1) is also provided with an air pipe connector (9), which is used to connect to an external negative pressure source to form a negative pressure environment in the inner cavity of the base (1), and the steel strip (2) is tightly fitted to the base (1).

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