TW201527665A - Direct acting device - Google Patents

Abstract

A direct acting device is used for preventing dust from entering a shell. A band-shaped sealing ring belt has a certain length, so that the sealing ring belt can span an upper surface of a workbench to block an opening part, when the band-shaped sealing ring belt spans the upper surface of the workbench, a sealing ring belt guide part is contacted with the band-shaped sealing ring belt, so that the band-shaped sealing ring belt is bent to generate active force, and the active force makes the part of the band-shaped sealing ring belt, which does not span the upper surface of the workbench, fix towards a adhesion part, and when the band-shaped sealing ring belt spans the upper surface of the workbench, sliding plates block gaps between a workbench cover and an upper surface of a side cover and between the workbench cover and the band-shaped sealing ring belt.

Description

Direct acting device

The present invention relates to a linear motion device for directly moving a slider by a ball screw or a cylinder, and more particularly to an improvement of a dustproof device between a table that connects the slider and a housing that houses the slider that operates the slider.

Conventionally, in order to prevent dust from entering the inside of the casing, the linear actuator of this kind is provided with a belt-shaped sealing tape toward the opening of the casing.

However, since the stage is coupled to the slider, a structure in which the band-shaped sealing band spans the slider is formed. Therefore, dust may intrude into the outer casing from the gap of the band-shaped sealing tape which floats on the slider.

In order to prevent the intrusion of dust, for example, between the table and the outer casing, as much as possible, a small gap is provided to pressurize the inside of the casing to prevent the intrusion of dust, or a flexible sliding plate is provided in the gap between the table and the casing to prevent dust from entering. .

In addition, in order to adhere the band-shaped sealing tape to the opening of the casing, a belt-shaped sealing tape is pressed against the opening of the casing from a belt-shaped sealing tape by a roller or a squeegee or the like.

In addition, in order to prevent the band-shaped sealing tape from floating from the outer casing, a gap is formed between the band-shaped sealing tape and the opening of the outer casing, and the band-shaped sealing tape is applied. Tension causes it to form a structure that is often maintained in a tight state.

A method of applying tension to the belt-shaped sealing tape has a structure in which a pressing roller or a squeegee is formed on the upper surface and the lower surface of the belt-shaped sealing tape.

Further, in order to appropriately maintain the tension of the belt-shaped sealing tape, the roller or the squeegee is supported by an elastic member such as a spring.

[Prior technology] [Technical Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2000-197304

[Patent Document 2] Japan Shikaiping 4-60642 Microfilm

[Patent Document 3] Microfilm of Japan Shikai Sho 63-172545

[Patent Document 4] Japan Shikaiping 3-33041 Microfilm

[Patent Document 5] Japanese Patent Laid-Open Publication No. 2000-61681

[Patent Document 6] Japanese Laid-Open Patent Publication No. 2006-43856

However, a method of pressurizing the inside of the casing is necessary for supplying a compressor and a pipe for pressure, and the flexible sliding plate may cause problems such as a component shape or a complicated mounting method.

Further, in the conventional dustproof structure of the sealing tape, it is necessary to apply a belt-shaped sealing tape to the opening of the casing and to apply a tension mechanism to the tape-shaped sealing tape.

In addition, in order to reduce the friction caused by the tension of the band seal, in the belt Rollers or low friction materials must be used between the sealing strip and the table to complicate the construction.

Further, the tension and friction of the band-shaped sealing tape increase the sliding resistance of the device itself, and there is a problem that the load on the motor or the like for the driving device increases.

The present invention has been made in order to solve the conventional problems, and an object of the present invention is to provide a tension-free sealing tape, and to prevent dust from intruding into the outer casing without pressing the band-shaped sealing tape toward the opening of the outer casing. Straight-in device inside.

The invention according to claim 1 is characterized in that: the outer casing having the opening portion formed in the longitudinal direction; the side cover provided along the opening portion on both sides of the opening portion; and the opening portion side of the side cover along the opening portion The adhesive member is disposed; the stand is erected so that the stand protrudes from the opening to be reciprocally movable in the longitudinal direction of the slider; the upper surface of the upper portion of the cover is fixed at both ends of the cover to cover the opening, and the adhesive member fixes the two a belt-shaped sealing tape at the side; a sealing tape guiding portion forming a curved portion at a strip-shaped sealing tape across the table when the table is moved; and a sliding piece for closing a gap between the side cover and the table when the table is moved, in a strip shape The sealing tape has a length that closes the opening portion across the upper surface of the table, and the sealing tape guiding portion contacts the band-shaped sealing tape when the band-shaped sealing tape crosses the upper surface of the table to bend the band-shaped sealing tape to generate an area that will not cross the upper surface of the table The strip-shaped sealing tape is fixed to the elastic thrust of the adhesive member, and the sliding piece is closed on the upper surface of the cover and the side cover and the strip shape when the band-shaped sealing tape crosses the upper surface of the table The gap of the sealing tape.

According to a second aspect of the invention, in the linear motion device of the first aspect of the invention, the sealing tape guide portion is provided in a front-rear portion in the longitudinal direction of the table.

The invention according to claim 3, wherein in the linear motion device according to the first or second aspect of the invention, the seal tape guide portion is suspended from the upper surface of the table toward the upper surface of the side cover, and is separated. The open gap is disposed above the side cover.

According to a fourth aspect of the invention, in the linear motion device of the first aspect of the invention, the sealing tape guide portion is provided in a front-rear portion in the longitudinal direction of the table cover attached to the table.

The invention according to claim 5, wherein in the linear motion device of the fourth aspect of the invention, the seal tape guide portion is suspended from the upper surface of the cover cover toward the upper surface of the side cover, and is disposed with a gap therebetween. On the top of the side cover.

The invention according to claim 6 is characterized in that, in the linear motion device according to any one of the first to fifth aspect of the invention, the upper surface of the table is formed in a longitudinal direction, and the front and rear portions are lower than the central portion. Arch type.

The invention according to claim 7 is characterized in that, in the linear motion device according to any one of the first to sixth aspect, the adhesive member is a magnet piece, and the band-shaped sealing tape is magnetic. Made up of materials.

The invention according to claim 8 is characterized in that, in the linear motion device according to any one of claims 1 to 6, the adhesive member is silicone, polyurethane or a polyurethane coated with an adhesive.

The invention according to claim 9 is characterized in that, in the linear motion device according to any one of the first to eighth aspect of the invention, the table is provided in the entire circumference of the table, and is inserted and held. The holding portion of the slide piece and the pressing portion provided on the contact surface of the bottom surface of the holding portion and the slide piece, and pressing the sliding surface toward the outer casing direction.

The invention according to claim 10, wherein the pressing portion is formed by a contact surface between the bottom surface and the sliding sheet in a concave-convex shape.

In the linear motion device according to any one of the items of the fourth aspect of the present invention, the cover of the present invention, wherein the cover is provided around the entire cover, A holding portion that holds the slide piece and a pressing portion that is provided on a contact surface between the bottom surface of the holding portion and the slide piece and that presses the sliding surface toward the outer casing direction are inserted.

The invention according to claim 12, wherein the pressing portion is formed by a contact surface between the bottom surface and the sliding sheet in a concave-convex shape.

The invention according to claim 13 is characterized in that, in the linear motion device according to any one of claims 1 to 12, the slider is formed of two members and arranged in series The long direction of the outer casing.

The invention according to claim 13 is characterized in that, in the linear motion device of claim 13, the seal tape guide portion is provided at the front and rear portions and the intermediate portion in the longitudinal direction of the cover attached to the table. .

The invention relating to claim 15 of the patent application is characterized in that: In the linear motion device according to any one of the items 1 to 14, the width of the seal tape guide portion is 50 to 80% of the width of the band-shaped seal tape.

According to the present invention, since the linear motion device of the table is provided, the opening of the casing can be sufficiently sealed, and the intrusion of dust can be prevented from having a dustproof function, and the size of the device can be prevented from increasing.

Further, since the sliding resistance of the belt-like sealing tape is small, high-precision positioning can be performed, and the load on the motor or the like for driving the linear motion device can be reduced, energy can be saved, and the life can be extended.

Moreover, since no tension is applied to the belt-shaped sealing tape, the sealing tape guiding portion can only contact the upper surface of the sealing tape to reduce the sliding resistance, and the tension of the band-shaped sealing tape can be adjusted, so that the elastic member is not supported by the elastic member such as a spring. The necessity of the child and the slide.

Further, the lower surface of the belt-shaped sealing tape is not in contact with the upper surface of the stage, so that unnecessary tension is not generated to the band-shaped sealing tape to reduce the sliding resistance.

In addition, by arranging the sliders in series to form two members, or using a slider that has grown in length, the load resistance of the table can be increased.

Further, in order to increase the load resistance of the table, even if the length of the growth stage is arranged in series with the sliders in two pieces, the seal band guide portion is added to the intermediate portion to prevent contact with the inside of the cover and to reduce the band shape. The contact area above the sealing tape.

1‧‧‧Motor

2‧‧‧ bracket

3‧‧‧Ball screw

4‧‧‧ Shell

5‧‧‧Front

7‧‧‧ Magnet

8‧‧‧ side cover

8a‧‧‧Top of the side cover 8

10‧‧‧ Screw shaft

11‧‧‧Sliding block

12‧‧‧

12c‧‧‧ recess

12d‧‧‧Shrinking neck

12e‧‧‧Sealing belt guide

13‧‧‧Guide

16‧‧‧Table cover

16a‧‧‧Upper panel

16b‧‧‧ side panel

16c‧‧‧ front and rear panels

16d‧‧‧ Side ribs

16e‧‧‧ front and rear ribs

16f‧‧‧Receiving Department

16g‧‧‧ convex

16h‧‧‧ recess

16j, 16k‧‧‧Sealing belt guide

18‧‧‧Ball screw nut

20‧‧‧ openings

23‧‧‧Striped sealing tape

34‧‧‧ countertops

37‧‧‧Slide

37a‧‧‧ cover side contact surface

37b‧‧‧Sealing side contact surface

Fig. 1 is a top view of a linear motion device according to a first embodiment of the present invention.

Fig. 2 is a cross-sectional view taken along line A-A of Fig. 1.

Fig. 3 is a cross-sectional view taken along line B-B of Fig. 1.

Fig. 4 is a cross-sectional view showing the main part of Fig. 2 in an enlarged manner.

Fig. 5 is a perspective view showing an enlarged main portion of Fig. 2;

Fig. 6 is a cross-sectional view showing the relationship between the table 12, the table cover 16, and the seal tape guide portion 16j and the band-shaped seal band 23.

Fig. 7 is a perspective view showing the cover tape guide portion 16j of the table cover 16 except the cover 16 and the belt-shaped sealing tape 23 of the straight-feeding device of Fig. 1 are removed.

Fig. 8(a) is a perspective view showing the table cover 16, (b) is a perspective view showing a state in which the slide piece 37 is attached to the table cover 16, and (c) is a view showing the accommodating portion 16f of the table cover 16. A perspective view of the junction.

Fig. 9 is a perspective view showing the slide piece 37.

Fig. 10 is a cross-sectional view showing a contact surface between the table cover 16 and the slide piece 37 as an example of a continuous mountain shape formed by the convex portion 16g and the concave portion 16h.

Fig. 11 is a cross-sectional view showing the contact surface of the table cover 16 and the slide piece 37 as a plane.

Fig. 12 is a cross-sectional view showing the relationship between the table cover 16 and the slide piece 37 and the side cover 8.

Fig. 13 is an explanatory view showing an example in which the rectilinear device of Fig. 1 is exemplified by a hanging wall type and a flat type.

Fig. 14 is a perspective view showing the stage 12 provided with the slide piece 37.

Figure 15 is a perspective view of a linear motion device according to a second embodiment of the present invention.

Fig. 16 is a perspective view showing the stage cover 16 of the straightening device of Fig. 15 except for the table 12 of the seal tape guiding portion 16j of the table cover 16.

Fig. 17 is a perspective view showing, in an enlarged manner, a main portion of Fig. 16.

Fig. 18 is a cross-sectional view showing the relationship between the two stages 12, the table cover 16 and the two seal band guides 16j, the center seal band guide portion 16k, and the band-shaped seal band 23.

The present invention will be described below based on the embodiments shown in the drawings.

[First Embodiment]

Figs. 1 to 13 are views showing a linear motion device according to a first embodiment of the present invention.

In the figure, 1 is a motor, and 2 is a bracket that connects the ball screw 3 housed in the outer casing 4 and the motor 1.

The bracket 2 is shown in FIG. 1 and FIG. 2, and one end is connected to the motor 1 via a screw. Further, the bracket 2 is provided with a hollow portion 2a in the axial direction of the outer casing 4, and the hollow portion 2a is provided with a coupling portion 9 such as a coupling. The connecting portion 9 is coupled to the motor shaft 1a on the screw shaft 10 of the ball screw 3.

As shown in FIG. 2 and FIG. 3, the outer casing 4 has an opening portion 20 in the axial direction along the moving direction of the sliding block 11, that is, the axial direction. Both ends are open. The guide groove 13 is formed in the recessed portion 4a formed by the opening portion 20, and the guide groove 13 can be freely reciprocally accommodated along the axial direction of the inner side faces 4b of the recessed portion 4a, and can be freely reciprocated in the axial direction by the ball screw 3 Slide block (slider) 11.

Further, the outer casing 4 is closed by a screw-connecting bracket 2 at one open end, and the other open end is closed by a screw connecting flange 5.

The slider 11 is provided with a table 12 thereon.

As shown in FIGS. 2 and 3, the slider 11 has a ball screw nut 18 in which a ball screw 3 is disposed, and the slider 11 slides along a guide groove 13 formed in the recess 4a of the outer casing 4, and a ball of the ball screw 3 The screw nut 18 reciprocates the table 12 together.

The table 12 is configured to reciprocate through the opening portion 20 of the outer casing 4.

The axial direction of both sides of the opening portion 20 of the outer casing 4 is as shown in Figs. 1 to 3, and the side cover 8 is joined by a screw. The upper surface 8a of the side cover 8 is provided with a band-shaped sealing tape 23 that closes the opening 20.

The band-shaped sealing tape 23 is shown in Figs. 1 to 7 and is provided above the through-stage 12 of the outer casing 4 so as to cover from the upper surface of the table 12 to the both side portions 12b, and the longitudinal direction of the band-shaped sealing tape 23 Both end portions are fixed to the bracket 2 and the flange 5 by screws 30a, and both end portions of the strip-shaped seal band 23 in the longitudinal direction are attracted to the side cover 8 by the magnet 7 provided on the side cover 8.

Further, the strip-shaped sealing tape 23 is preferably a stainless steel sheet or the like which can be appropriately bent by the inclination of the both side portions 12b of the table 12, for example, a thin plate made of a magnetic material having a certain degree of elasticity, for example. There are ERA440, SUS410, etc. Ma Tian loose iron stainless steel, for example For precipitation hardening type stainless steels such as SUS631 and SUS632, for example, there are granulated iron-based stainless steels such as SUS430 and SK materials. In addition, stainless steel sheets of the Vostian iron-based stainless steel such as SUS303, SUS304, SUS316, and SUS304 which are not magnetic are not adsorbed by the magnet 7, and cannot be used as a belt-shaped sealing tape.

Further, the elasticity means a characteristic such as a leaf spring which is generated by the elasticity of the band-like sealing tape 23.

The table 12 is formed in an arch shape which is formed at the central portion in the axial direction of the outer casing 4 and is raised from the both side portions 12b. The table 12 is provided with two recessed portions 12c into which the upper surface 8a of the side cover 8 of the magnet 7 is inserted from both sides. A constricted portion 12d is formed on the table 12 by the two recessed portions 12c. The stage 12 causes the plurality of protrusions 12a to stand upright to form a substantially horizontal hypothetical table 34.

The table 12 is mounted with a table cover 16 that covers the portion of the table 12 except for the table top 34.

The table cover 16 is composed of a quadrangular upper panel 16a having a width slightly smaller than the width of the outer casing 4, a side panel 16b which is provided downward on both side portions of the upper panel 16a, and a lower side of the upper panel 16a. The front and rear panels 16c are formed.

The lower end portions of the side panels 16b and the front and rear panels 16c are formed in parallel with the upper surface 8a of the side cover 8, and the lower end portions of the side panels 16b and the front and rear panels 16c are as shown in Fig. 12, and are disposed to be spaced apart from the upper surface 8a of the side cover 8. The gap S. Here, the constant gap S may be, for example, a small gap of about 0.5 mm.

The inner side of the side panel 16b and the front and rear panels 16c are mounted around the entire circumference. A slender plate-shaped sliding sheet 37.

On the inner side of the front and rear panels 16c of the table cover 16, a seal tape guide portion 16j for adhering the band-shaped seal tape 23 to the side cover 8 by a magnet 7 provided on the side cover 8 is provided.

The band-shaped sealing tape 23 is fixed to the bracket 2 and the flange 5 by screws 30a, but the axial length of the band-shaped sealing tape 23 has a remaining portion that can pass across the table 12.

Therefore, when the band-shaped sealing tape 23 is brought into a fixed state by the suction force of the magnet 7, the remaining portion of the band-shaped sealing tape 23 pressed from above by the sealing tape guiding portion 16j can be sealed by a band The elasticity of the belt 23 itself naturally forms the curved portion 23a.

Further, the curved portion 23a functions as a spring pushing function of adsorbing the band-shaped sealing tape 23 to the magnet 7 by the elasticity of the band-shaped sealing tape 23 itself, so that it can be guided by the sealing tape even if other elastic pushing means are not required. The portion 16j adsorbs the band-shaped sealing tape 23 to the magnet 7.

Further, although the belt-shaped sealing tape 23 passes between the lower side of the table cover 16 and the upper side of the table 12, the curved portion 23a of the band-shaped sealing tape 23 can be adjusted so as not to contact the inside of the upper panel 16a of the table cover 16. Nor does it touch the length above the table 12.

The upper surface of the stage 12 is formed in an arch shape, and does not contact the strip-shaped sealing tape 23 in a normal state, but has an auxiliary task of forming the curved portion 23a by the mounting table cover 16.

Further, the seal tape guide portion 16j does not constitute the belt-shaped seal band 23 pressed toward the magnet 7, but is attached to the upper surface 8a of the side cover 8 with a gap therebetween. Since the cover 16 is constructed, the frictional force of pressing the band seal 23 is not generated. Further, even when a force is applied to the contact portion of the band-shaped sealing tape 23 and the seal tape guiding portion 16j, only the force generated by the elasticity of the band-shaped sealing tape 23 itself is generated, so that frictional force is hardly generated.

Next, the relationship between the table 12, the table cover 16, the seal tape guide portion 16j, and the band-shaped seal tape 23 will be described below based on Fig. 6 .

Here, the dimension F is the axial distance of the cover 16, the dimension C is the distance between the seal guides 16j, and the dimension X is from the patio face of the cover 16 to the strip seal (adhered to the side cover 8) The distance up to 23, the dimension Y is the distance between the top of the table 12 and the band-shaped sealing tape (adhered to the position of the side cover 8) 23, and the dimension Z is the sealing tape guiding portion 16j and the band-shaped sealing tape (adhered to the side cover 8) The distance of position 23, rD is the radius of curvature of the band-shaped sealing tape 23, and rE is the radius of curvature of the contact portion of the band seal portion 16j with respect to the band-shaped sealing portion 23.

The conditions of this embodiment are as follows. The size Y is necessary for construction. Size X is as small as possible. The dimension F has to be shorter in order to actuate the stroke of the table 12. The radius of curvature rD of the contact portion with respect to the band-shaped sealing tape 23 and the radius of curvature rE of the band-shaped sealing tape 23 of the sealing tape guiding portion 16j affect the life of the band-shaped sealing tape 23 to be as large as possible.

In order to increase the radius of curvature rD of the contact portion with respect to the strip-shaped seal band 23 and the radius of curvature rE of the strip seal band 23 of the seal tape guide portion 16j, it is necessary to increase the size C, but when the size C is increased, at the same time Will increase the size F.

Therefore, the sealing tape guide portion 16j is caused to float only by the amount of the dimension Z, This increases the radius of curvature rD of the contact portion with respect to the band-shaped sealing tape 23 and the radius of curvature rE of the band-shaped sealing tape 23 of the seal tape guiding portion 16j without increasing the size C.

A small dimension Z is formed, and the dimension C should maintain its state, but at this time, the radius of curvature rD of the contact portion with respect to the strip-shaped sealing tape 23 and the radius of curvature rE of the band-shaped sealing tape 23 of the sealing tape guiding portion 16j become small. .

Therefore, it is not necessary to closely press the upper surface of the band-shaped sealing tape 23, and the position of the sealing tape guiding portion 16j is determined, that is, the sealing tape guiding portion 16j can press the inclination of the bent portion (curved portion 23a) of the band-shaped sealing tape 23 halfway.

Incidentally, the front end portion of the seal tape guide portion 16j is shown in Figs. 4 and 8, and the chamfer 16j' is provided so as to reduce the load on the strip seal tape 23 by avoiding surface contact with the band seal tape 23. The wear of the band seal band 23 is reduced.

Next, the sliding piece 37 attached to the cover 16 will be described with reference to FIGS. 4, 5, 8, 9, and 10.

The table cover 16 is provided with an accommodating portion for accommodating the slide piece 37. The accommodating portion is disposed such that the side rib 16d and the front and rear ribs 16e which are suspended from the upper panel 16a are disposed in parallel to the side panel 16b and the front and rear panels 16c, respectively, and span the side panel 16b. The accommodating portion 16f is provided around the inner side of the front and rear panels 16c.

Further, since the seal tape guiding portion 16j is narrower than the width of the band-shaped sealing tape 23, it does not contact the vicinity of both sides of the band-shaped sealing tape 23, and deterioration of the vicinity of both sides of the band-shaped sealing tape 23 can be prevented. The width of the seal band guide portion 16j is preferably 50 to 80% of the width of the band seal tape 23.

The abutting surface forming the bottom surface of the accommodating portion 16f is as shown in Fig. 8(c). A continuous mountain shape formed by the convex portion 16g and the concave portion 16h is formed.

The material of the sliding piece 37 is made of rubber or an elastic synthetic resin, and is composed of a convex portion 16g contacting the cover 16 and a cover side contact surface 37a of the recess 16h; the upper surface 8a and the strip contacting the side cover 8 The seal belt side contact surface 37b of the seal tape 23; and the holding surface 37c which is in contact with the side panel 16b, the front and rear panel 16c, the side rib 16d, and the front and rear rib 16e. The sliding piece 37 is pressed into the accommodating portion 16f of the table cover 16 and held in the accommodating portion 16f by friction.

Next, the action of the linear motion device according to the present embodiment will be described with reference to Figs. 1 to 4 .

When the screw shaft 10 of the ball screw 3 is actuated by the operation of the motor 1, the ball screw nut 18 is axially moved along the screw shaft 10 as the screw shaft 10 rotates. The slider 11 is moved in the axial direction. The table cover 16 is moved on the strip-shaped sealing tape 23 by the movement of the slider 11, so that the table 12 moves under the band-shaped sealing tape 23.

At this time, the curved portion 23a of the band-shaped sealing tape 23 is also moved by the sealing tape guiding portion 16j, so that the band-shaped sealing tape 23 can be often moved in the non-contact state to the table 12 and the table cover 16, and the pair of belts can be obtained. The tension of the sealing tape 23 or the dustproof structure with small sliding resistance caused by the friction of the tension.

The upper surface 8a of the side cover 8 is provided with a belt-shaped sealing tape 23 that closes the opening 20, so that it is possible to prevent the intrusion of dust or the like from the opening 20. Even when the table 12 is moved, since the band-shaped sealing tape 23 is pressed while the sealing tape guiding portion 16j is pressed, the band-shaped denseness can be often made. The sealing tape 23 and the side cover 8 are in close contact to prevent the intrusion of dust from the uncovered portion of the table cover 16.

Moreover, the sliding sheet 37 attached to the table cover 16 can prevent dust or the like from entering the table cover 16 from the gap between the upper surface 8a of the table cover 16 and the side cover 8 and the band-shaped sealing tape 23, thereby obtaining a dustproof effect. .

Usually, such a sliding sheet is made of a rubber or a synthetic resin such as an elastic resin. However, due to the elastic force, there is a problem that the dimensional accuracy of the part is poor. Further, since a plurality of components are combined, the gap between the upper surface 8a of the table cover 16 and the side cover 8 and the band-shaped sealing tape 23 is not necessarily formed.

That is, when the size of the sliding sheet 37 is smaller than a predetermined size or the gap between the top cover 16 and the upper surface 8a of the side cover 8 and the band-shaped sealing tape 23 is larger than a predetermined size, the upper surface 8a of the sliding sheet 37 and the side cover 8 and the belt A gap is formed between the seal bands 23, which causes dust to enter.

Conversely, when the size of the sliding piece 37 is larger than a predetermined size or the gap between the top cover 16 and the upper surface 8a of the side cover 8 and the band-shaped sealing tape 23 is smaller than a predetermined size, the sliding piece 37 and the upper surface 8a of the side cover 8 and The sliding resistance between the band-shaped sealing tapes 23 is increased, and there is a problem that heat generation or durability is lowered.

Therefore, in the present embodiment, the continuous mountain shape formed by the convex portion 16g and the concave portion 16h serves as a contact surface between the table cover 16 and the sliding piece 37, and a structure in which the dimensional error of the component or the combination error of the components can be absorbed is formed.

Next, the effect of the dimensional error of the absorbing part and the combination error of the parts will be explained.

As shown in Fig. 11, when the contact surface of the cover 16 and the slide piece 37 is flat, the dimensional error that can absorb the up-and-down direction is only the elastic force of the slide piece 37 itself. Therefore, in the case where an error occurs in the compression direction, the slide piece The overall 37 will be compressed to produce a rebound force, which will cause an increase in sliding resistance.

This is shown in Fig. 10. When the contact surface between the table cover 16 and the slide piece 37 is formed into a continuous mountain shape formed by the convex portion 16g and the concave portion 16h, even when an error occurs in the compression direction, one of the compressed slide pieces 37 is formed. Some of the portions are retracted toward the recessed portion 16h, and deformation of the sliding piece 37 itself may be formed.

Further, when the slide piece 37 is first mounted in a state of being slightly compressed, the gap between the upper surface 8a of the slide piece 37 and the side cover 8 and the band-shaped sealing tape 23 can be closed even when the gap is widened.

Therefore, even if the dimensional error of the component or the combination error of the component is large, the intrusion of dust can be prevented, and a reliable dustproof effect can be obtained without increasing the cost.

Next, the number of mountain shapes and the height of the mountain formed on the contact surface of the table cover 16 and the slide piece 37 will be described below.

From the results of the experiment, it can be confirmed that the number of mountains is 4 to 6 mountains in the axial direction, 3 to 4 mountains in the width direction, and the height of the mountain is based on the height of the sliding plate 37. The compression ratio is It is preferably 5 to 15%. When the value is higher than this value, the friction is increased to reduce the heat generation and the durability, which may cause an increase in the sliding resistance of the linear motion device.

Here, the compression ratio (%) is 1-(H-D)/H×100. Where, H It is shown as the height of the slide piece 37, and D is the amount which the slide piece 37 is compressed by the mountain of the cover 16, and these relationship is shown by FIG.

Further, the four-side groove formed by the accommodating portion 16f is inserted around only one of the elongated plate-shaped sliding sheets 37, so that the sliding piece 37 can be attached, and the sliding piece 37 can be easily attached. In addition, the seams are not particularly required to be bonded, and are produced by a single slide piece 37, which is advantageous for cost and manufacture.

Further, in the above embodiment, the case where the four-side groove formed by the accommodating portion 16f is inserted around one of the elongated plate-shaped sliding sheets 37 is described, but the present invention is not limited thereto.

For example, as shown in Fig. 13, when the straight-feeding device according to the present embodiment is used for wall hanging, if the belt-shaped sealing tape 23 does not adhere to dust, the sliding piece 37 can be prevented by being attached to the two sealing tape side contact faces 37b. The entry of dust.

In addition, as shown in Fig. 13, when the straight-feeding device according to the present embodiment is used in a flat position, dust is likely to remain on the belt-shaped sealing tape 23, and even if the sliding piece 37 is attached to the front and rear panels 16c in the moving direction of the table 12, It can still prevent the intrusion of dust.

As shown in Fig. 13, by reducing the mounting portion of the slide piece 37, the sliding resistance can be reduced.

However, in the environment in which the powder is flying in the space, the linear motion device according to the above embodiment is preferably inserted into the four-sided groove formed by the accommodating portion 16f around the one piece of the elongated plate-shaped sliding piece 37.

Further, although the above embodiment has been described with respect to the case where one slide piece 37 is attached to the table cover 16, the present invention is not limited thereto, for example, as the 14th. As shown in the figure, the accommodating portion of the slide piece 37 may be provided on the lower surface of the table 12 in the same manner as the accommodating portion 16f of the table cover 16.

Further, the mounting of the slide piece 37 is as described for the mounting of the table cover 16, and may be all around or only a part.

Further, in the above embodiment, the case where the contact surface of the table cover 16 and the slide piece 37 is a continuous mountain shape in which the convex portion 16g and the concave portion 16h are formed is described. However, the present invention is not limited thereto, for example, the cover 16 and the slide piece 37. The contact surface may also have the cover 16 as a flat surface and the slide piece 37 in a mountain shape.

Further, in the above embodiment, the case where the contact surface of the table cover 16 and the slide piece 37 is a continuous mountain shape in which the convex portion 16g and the concave portion 16h are formed is described. However, the present invention is not limited thereto, for example, the cover 16 and the slide piece 37. The contact faces may also be waveforms that are connected by a smooth curve, or only the portion of the convex portion 16g.

In the above embodiment, the contact surface between the table cover 16 and the slide piece 37 is a continuous mountain shape in which the convex portion 16g and the concave portion 16h are formed. However, the present invention is not limited thereto, and for example, the storage portion 16f may be provided. The spring presses the slide piece 37 with a spring.

Further, the above-described embodiment has been described in the case where the four-side grooves formed in the accommodating portion 16f are inserted around the one-strip-shaped sliding sheet 37. However, the present invention is not limited thereto, and for example, it may be divided into four sides without gaps.

In the above embodiment, the case where the strip-shaped sealing tape 23 is adsorbed by the magnet piece 7 has been described. However, the present invention is not limited thereto, and for example, a self-adhesive material may be used. At this time, the strip-shaped sealing tape 23 is not limited to a magnetic material, and may be another material such as a non-magnetic material. again The self-adhesive material is, for example, silicone, polyurethane or polyurethane coated with an adhesive.

Further, in the above embodiment, the case where the table cover 16 provided with the seal tape guide portion 16j is attached to the table 12 has been described. However, the present invention is not limited thereto. For example, as shown in Fig. 14, the table cover 16 may be omitted. The seal belt guide portion 12e is integrally provided in the front and rear of the longitudinal direction of 12.

[Second Embodiment]

15 to 18 are views showing a linear motion device according to a second embodiment of the present invention.

The linear motion device is for increasing the length of the table 12 in order to obtain an increase in the load resistance of the table 12.

However, in the linear motion device according to the first embodiment, when the load resistance of the table 12 is to be increased, the table 12 is formed as shown in Fig. 3, and the concave portion 12c into which the side cover 8 enters is formed on both sides in the longitudinal direction. The constricted portion 12d is formed, which reduces the strength of the table 12.

Therefore, in the present embodiment, the load resistance of the table 12 can be increased by increasing the sectional area of the constricted portion 12d by the length of the growth stage 12.

Further, when the curved portion 23a of the strip-shaped sealing tape 23 on the upper side of the stage 12 is grown, only the sealing tape guiding portion 16j provided at both ends of the stage 12 may contact the table cover 16 across the wide range of the upper surface of the band-shaped sealing tape 23. On the inside, it causes sliding resistance or wear of parts due to friction.

Therefore, the linear motion device according to the present embodiment is connected to the two sliding blocks 11 in series, and the sealing tape guides provided at both ends of the table 12 are provided. A seal band guide portion 16k is added to the inside of the table cover 16 at the center of 16j.

The other configuration is the same as the linear motion device according to the first embodiment in which one slide block 11 is used.

Next, in the present embodiment, the reason why the seal band guide portion 16k is provided at the center position of the table 12 is preferably described below.

a. In order to prevent the deflection of the curved portion 23a when the slider 11 is moved, it is necessary to equally divide the curved portion 23a into two. Therefore, the intermediate seal band guide portion 16k is preferably in the vicinity of the center of the seal band guide portion 16j provided at both ends of the stage 12.

b. In order to prevent the deflection of the curved portion 23a when the slider 11 is moved, it is necessary to equally divide the curved portion 23a into two. Therefore, the lower surface of the intermediate seal band guide portion 16k is preferably a position lower than the apex divided into the two bent portions 23a.

c. In order to prevent deterioration in the vicinity of both sides of the strip-shaped sealing tape 23, the width of the intermediate sealing tape guiding portion 16k is the same as the width of the sealing tape guide portion 16j provided at both ends of the table 12 with respect to the band-shaped sealing tape 23 The width is 50~80%.

Further, the front end portion of the seal tape guide portion 16k is as shown in Fig. 18, and is similar to the chamfer 16j' provided at the front end portion of the seal tape guide portion 16j in order to avoid the surface contact with the strip seal tape 23 and reduce the band shape. The load of the sealing tape 23 can be imparted to the durability, etc., and the chamfer 16k' is provided to reduce the abrasion of the band-shaped sealing tape 23.

Further, in the present embodiment, the case where the slider 11 is divided into two series connection arrangements has been described, but the present invention is not limited thereto. The total length of one sliding block 11 is increased.

Further, although the present embodiment has been described with respect to the case where the ball screw 3 is used as the actuator, the present invention is not limited thereto, and for example, a fluid cylinder or a linear motor may be used.

1‧‧‧Motor

2‧‧‧ bracket

7‧‧‧ Magnet

8‧‧‧ side cover

10‧‧‧ Screw shaft

12a‧‧‧Protruding

16‧‧‧Table cover

16a‧‧‧Upper panel

16b‧‧‧ side panel

16c‧‧‧ front and rear panels

20‧‧‧ openings

23‧‧‧Striped sealing tape

30a‧‧‧screw

Claims (12)

A linear motion device comprising: an outer casing in which an opening portion is formed in a long direction; a side cover provided along the opening portion on both sides in the longitudinal direction of the opening portion; and each of the opening portion sides of the side cover along An adhesive member provided in the opening; a stand that is erected so that the table protrudes from the opening so as to be reciprocally movable in a longitudinal direction of the housing; and the upper surface of the housing is fixed over the upper surface of the housing a sealing tape that fixes both side portions by the adhesive member in the longitudinal direction of the opening; and a bending portion that is in a non-contact state with the table in the longitudinal direction of the table during movement of the table is formed in the sealing tape of the sealing tape a guide portion; and the seal band having a length that closes the opening portion across the upper surface of the table in a non-contact state, wherein the seal tape guide portion is in contact with the seal band to bend the seal band when the seal band spans an upper surface of the table And the above-mentioned stage is in a non-contact state, and the above-mentioned sealing tape which is to be in a non-contact state without crossing the upper surface of the above-mentioned stage is fixed to Biasing force of said adhesive member. The linear motion device according to claim 1, wherein the seal tape guide portion is provided in a front and rear portion of the table in the longitudinal direction. A linear motion device as recited in claim 1, wherein The seal tape guide portion is suspended from the upper surface of the stage toward the upper surface of the side cover, and is disposed on the upper surface of the side cover with a gap therebetween. The linear motion device according to claim 2, wherein the seal tape guide portion is suspended from an upper surface of the table toward an upper surface of the side cover, and is disposed on an upper surface of the side cover with a gap therebetween. The linear motion device according to claim 1, wherein the seal tape guide portion is provided in the longitudinal direction of the front and rear covers of the table cover attached to the table. The linear motion device according to claim 5, wherein the seal tape guide portion is suspended from an upper surface of the cover cover toward an upper surface of the side cover, and is disposed on an upper surface of the side cover with a gap therebetween. The linear motion device according to any one of claims 1 to 6, wherein the upper surface of the table is an arch shape in which the front and rear portions in the longitudinal direction are formed lower than the central portion. The linear motion device according to any one of claims 1 to 6, wherein the adhesive member is a magnet piece, and the sealing tape is made of a magnetic material. The linear motion device according to any one of claims 1 to 6, wherein the adhesive member is silicone, polyurethane or a polyurethane coated with an adhesive. The linear motion device according to any one of claims 1 to 6, wherein the slider is formed of two members and arranged in series in a longitudinal direction of the outer casing. a linear motion device as recited in claim 10, The seal band guide portion is provided in the longitudinal direction of the front and rear portions and the intermediate portion of the table cover attached to the table. The linear motion device according to any one of claims 1 to 6, wherein the width of the sealing tape guiding portion is 50 to 80% of the width of the sealing tape.