TW201634826A - Linear sliding table having non-contact dustproof structure - Google Patents

Abstract

A linear sliding table having a non-contact dustproof structure includes a base platform elongated axially along an axis, a linear motion actuator disposed on the base platform, two side shielding plates disposed on the base platform and in front of two opposite sides of the linear motion actuator respectively, and a protective cover having a top plate and two side plates. Each side shielding plate has an extending length along a plane vertical to the axis. The protective cover is attached to the base platform at two end portions thereof and the two side plates are positioned in front of the two opposite sides of the linear motion actuator. A periphery of each side plate and the base platform are spaced apart in the vertical plane at a fixed distance. The extending length of the side shielding plate is greater than the fixed distance. Therefore, the two side shielding plates and the two side plates are staggered, which may impede ingress of dust and dirt into the interior of the base platform, thus ensuring the full functionality of the linear motion actuator.

Description

Linear slide table with non-contact dustproof construction

The invention relates to a linear sliding table with a non-contact dustproof structure, in particular to a mechanism for shielding the dust from entering the top surface and the side surface of the linear motion unit of the linear sliding table, and avoiding the influence of linearity. The motion unit runs smoothly.

The linear motion mechanism usually drives a stage by a linear motion unit, and the stage carries a work tool for processing. However, during the working process, the dust generated may enter the linear motion unit, affecting the smoothness of the linear motion unit operation, and even worse the machining accuracy.

Therefore, the linear motion mechanism must shield the linear motion unit with a dustproof sheet to prevent dust from entering. Refer to the Republic of China New Patent No. M473642 "Protection Mechanism for Ironless Linear Motors". The dustproof sheet (flexible long belt) of this case directly contacts the linear motion unit (linear motor) and belongs to the contact type dustproof mechanism.

Referring again to US Patent No. 2013/0313920 A1 "Sliding Device", a linear motion unit is disposed on a base, and a cover member is coupled to the base and covers the linear motion unit, a larger stage connection. The linear motion unit is located under the cover member. The cover member has an opening through which a smaller stage is coupled to the larger stage for carrying the work implement. However, in the design of such a mechanism, the length of the opening is the stroke length of the smaller stage operation, and the larger stage must completely shield the opening to prevent dust from entering the linear motion unit through the opening. Internal, but the larger stage must be able to do linear motion. This mechanism design is not only limited by the smaller stage travel, but also detrimental to the miniaturization of the mechanism.

Please also refer to the seventh figure, which is another conventional linear motion mechanism which is provided with a linear motion unit (B) on a base (A) and a dustproof cover on the linear motion unit (B). The sheet (C), the two opposite stages (D) are laterally connected to the linear motion unit (B). This mechanism is designed so that the stroke of the stage (D) is not affected by the dustproof sheet (C), but such a mechanism will cause the linear motion unit (B) to be laterally unable to cover the dustproof sheet, and the dust may be contaminated by the side. Going inside the linear motion unit (B).

Accordingly, the present invention provides a linear slide table having a non-contact dustproof structure, comprising:

a base extending along an axial direction, a radial direction perpendicular to the axial direction, a linear motion unit on the base, and two side guards disposed on the base, the two side guards respectively located in the relative position of the linear motion unit On the outer side, each side guard has an extended length in the radial direction; an upper cover has a top plate and two side plates, the upper cover is coupled to the two ends of the base, and the two side plates are respectively located in the linear motion unit The opposite side of the side panel has a spacing between the edge of the side panel and the base, wherein the length of the two side shields is greater than the spacing, so that the two side panels and the two side panels are staggered; At least one stage, an accommodating space is formed in the opposite ends of the axial direction for the upper cover to pass through the accommodating space, and a gap is maintained with the stage, the stage is connected to the linear motion unit, The linear motion unit drives the stage to move linearly in the axial direction.

Further, the linear motion unit includes at least one linear motor for driving the stage, and at least one linear slide for carrying the stage.

Further, the stage includes a first stage member, a second support plate and a second stage member connected to each other, and the first stage member is coupled to the linear motion unit.

Further, the base has an end plate at each of the opposite ends of the axial direction to shield the linear motion unit. Further, the upper cover is spanned on the end plate, and the upper cover is pressed by a pressing member, and the upper cover and the pressing member are fixed to the end plate by a fixing member.

The effect of the invention is:

1. The stage is driven by the linear motion unit, so that there is an accommodating space on the stage for the upper cover to pass through. With this configuration, the stroke length of the stage is not affected by the two side guards or the upper cover.

2. The side plates of the two side guards and the upper cover are opposite to the outer side of the linear motion unit, and the length of the two side guards is greater than the distance between the end edges of the side plates of the upper cover and the base. The two side panels can be staggered with the two side panels, thereby preventing dust from entering the interior of the base laterally, affecting the smooth running of the linear motion unit.

3. The base shields the linear motion unit with the one end plate at opposite ends of the axial direction, whereby the linear motion unit on the base is shielded in the top surface, the side surface and the end surface, and the dust is not easily entered.

4. The stage is composed of the first stage member, the second support plate and the second stage member, which is convenient for fabrication and assembly.

5. The upper cover passes through the accommodating space of the stage and maintains a gap with the stage to avoid interference with the operation of the stage.

In combination with the above technical features, the main effects of the linear slide of the present invention having a non-contact dustproof construction will be apparent from the following embodiments.

Referring to the first and second figures, the embodiment includes a base (1), two side guards (2), an upper cover (3), and a loading platform (4), wherein:

The base (1) extends along an axial direction (P), and the vertical direction (P) has a radial direction (N). The base (1) has a linear motion unit. In this embodiment, the linear motion unit includes a line. The motor (11) and a linear slide (12) are not limited thereto, as long as the linear motion mechanism is a linear motion unit of the present invention, such as a linear screw, etc., the base (1) is in the axial direction ( The opposite ends of P) each have an end plate (13) for shielding the end face of the linear motion unit, and the end plate (13) is locked with a screw (16). The two side shields (2) are disposed on the base (1). The upper cover (3) has a top plate (31) and two side plates (32), and the upper cover (3) is spanned on the end plate (13) and is pressed against the upper plate by a pressing member (14). a cover (3), and then fixing the upper cover (3) and the pressing member (14) to the end plate (13) by a fixing member (15) [such as a screw], so that the upper cover ( The top plate (31) of 3) shields the top surface of the linear motion unit. The stage (4) includes a first stage member (41), two gussets (42) and a second stage member (43).

Referring to the third and fourth figures, the two side shields (2) are respectively located on opposite sides of the linear motion unit, and each side shield (2) has an extension length in the radial direction (N) ( H1). The two side plates (32) of the upper cover (3) are respectively located on opposite sides of the linear motion unit, and the end edge of each side plate (32) and the base (1) have a radial direction (N) a spacing (h2), wherein the extension length (h1) of the two side shields (2) is greater than the spacing (h2), so that the two side shields (2) and the two side panels (32) are staggered, thus Between the two side guards (2) and the two side plates (32), there is only a downwardly facing opening (O) in the radial direction (N), and dirt is not easily entered by the lower opening, whereby the structure can be The linear motion unit is shielded laterally. In addition, the top plate (31) of the upper cover (3) and the end plate (13) of the base (1) opposite the two ends shield the top surface and the end surface of the linear motion unit. It can prevent dust from entering the inside of the base (1) from any direction, affecting the smooth running of the linear motion unit.

Referring to the fifth and sixth figures, after the first stage member (41), the second support plate (42) and the second stage member (43) are connected and assembled into the stage (4), An accommodating space (44) is formed in the accommodating space (44) of the upper cover (3) along the opposite ends of the axial direction (P), and the upper cover (4) passes through the accommodating space (44). 3) maintaining a gap (g1) (g2) (g3) (g4) with the first stage member (41), the second support plate (42) and the second stage member (43), avoiding the upper cover (3) Interfering with the operation of the stage (4). The first stage member (41) is connected to the linear motor (11) and the linear slide (12) for driving the stage (4), and the linear slide (12) is used for The stage (4) is carried so that the stage (4) can move linearly in the axial direction (P). The stage (4) is composed of the first stage member (41), the second support plate (42) and the second stage member (43), which is convenient for fabrication and assembly, but is not limited to this type. Depending on the processing and assembly convenience of the processing tool, as long as the accommodating space (44) can be formed for the upper cover (3) to pass through, the stage (4) can be driven by the linear motion unit.

In view of the foregoing description of the embodiments, the operation and the use of the present invention and the effects of the present invention are fully understood, but the above described embodiments are merely preferred embodiments of the present invention, and the invention may not be limited thereto. Included within the scope of the present invention are the scope of the present invention.

(1)‧‧‧Base
(11)‧‧‧Linear motor

(12)‧‧‧Linear slides
(13) ‧‧‧End plates

(14) ‧‧‧pressure parts
(15) ‧‧‧Fixed parts

(16)‧‧‧ screws

(2) ‧‧‧Side guards

(3) ‧ ‧ upper cover
(31)‧‧‧ top board

(32)‧‧‧ side panels

(4) ‧‧‧ stage
(41)‧‧‧First stage components

(42)‧‧‧ struts
(43) ‧‧‧Second stage components

(44) ‧‧‧ accommodating space

(h1) ‧ ‧ extended length

(h2) ‧‧‧ spacing

(g) ‧ ‧ gap

(P)‧‧‧Axial

(N) ‧ ‧ vertical

(O) ‧ ‧ openings

[First figure] is an exploded perspective view of a linear slide table in the embodiment of the present invention.

[Second figure] is a three-dimensional combination diagram of a linear slide in the embodiment of the present invention.

[Third Figure] is a cross-sectional view of the linear slide in the radial direction in the embodiment of the present invention.

[Fourth Diagram] is a side view of a linear slide in the embodiment of the present invention.

[Fifth Figure] is a cross-sectional view of the linear slide in the radial direction in the embodiment of the present invention.

[Sixth] is a cross-sectional view of the linear slide in the axial direction in the embodiment of the present invention.

[Seventh figure] is a schematic diagram of a conventional linear motion mechanism.

(1)‧‧‧Base

(11)‧‧‧Linear motor

(12)‧‧‧Linear slides

(13) ‧‧‧End plates

(2) ‧‧‧Side guards

(3) ‧ ‧ upper cover

(31)‧‧‧ top board

(32)‧‧‧ side panels

(h1) ‧ ‧ extended length

(h2) ‧‧‧ spacing

(N) ‧ ‧ vertical

(O) ‧ ‧ openings

Claims (5)

A linear sliding table having a non-contact dustproof structure, comprising: a base extending along an axial direction, a radial direction perpendicular to the axial direction, a linear motion unit on the base; and two side guard plates disposed on the base The two side guard plates are respectively located on opposite outer sides of the linear motion unit, each side guard plate has an extended length in the radial direction; an upper cover has a top plate and two side plates, and the upper cover is coupled to the base An end portion, the two side plates are respectively located on opposite sides of the linear motion unit, and a distance between the end edge of each side plate and the base is in the radial direction, wherein the extension length of the two side shields is greater than the spacing, so that The two side guards are in a staggered manner with the two side panels; at least one of the loading bases is formed with an accommodating space through the opposite ends of the axial direction for the upper cover to pass through the accommodating space, and the loading The stage maintains a gap that is coupled to the linear motion unit whereby the linear motion unit drives the stage to move linearly in the axial direction. A linear slide table having a non-contact dustproof structure according to claim 1, wherein the linear motion unit includes at least one linear motor for driving the stage, and at least one linear slide rail for carrying the load. station. A linear slide table having a non-contact dustproof structure according to the first aspect of the invention, wherein the stage includes a first stage member, a second support plate and a second stage member connected to each other, the first A stage member is coupled to the linear motion unit. A linear slide table having a non-contact dustproof structure according to claim 1, wherein the base has an end plate at each of the opposite ends of the axial direction to shield the linear motion unit. A linear slide table having a non-contact dustproof structure according to claim 4, wherein the upper cover is spanned on the end plate, and the upper cover is pressed by a pressing member, and then A fixing member fixes the upper cover and the pressing member to the end plate.