JP2838067B2 - Rodless cylinder and slider table - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a rodless cylinder and a slider table used therein.

[0002]

2. Description of the Related Art Many types of cylinders in which a piston is not provided with a rod, that is, rodless cylinders have been proposed. Further, as can be seen from the structure, this kind of cylinder has a characteristic that it is advantageous in achieving a long stroke without taking up installation space.

Generally, a rodless cylinder has the following configuration. A piston is accommodated in the cylinder tube constituting the cylinder tube so as to be movable along the longitudinal direction of the tube. A slit is formed at the center of the upper surface of the cylinder tube. The slit extends along the longitudinal direction of the tube and communicates inside and outside the cylinder tube. A slider table is provided outside the upper surface of the cylinder tube. The slider table is connected to the piston via a slit, and moves integrally with the piston.

[0004] The rodless cylinder is, for example,
When used in a polluted environment with a lot of cutting chips and cutting oil, foreign substances such as dust easily enter the gaps of the slits on the sliding surface of the slider table. Then, the sliding resistance of the slider table increases due to the foreign matter, and the foreign matter gets into the seal member, thereby promoting abrasion and increasing the amount of air leakage. As a result, the operability of the cylinder deteriorates. Therefore, in order to solve this problem, it is necessary to take some dustproof measures for the cylinder.

As a cylinder taking the above measures, there is a cylinder in which a cylindrical elastic bellows is used as a dust-proof cover, and the peripheral surface of the cylinder tube is completely covered with the dust-proof cover (see, for example, Japanese Patent Application Laid-Open No. H05-1993). 172119). Further, as an example of a cylinder which is dustproof without using a dustproof cover, there is a cylinder using a rubber scraper which scrapes dust and the like on a slider sliding surface (for example, Japanese Patent Laid-Open No. 6-42508). ).

[0006]

However, the above-mentioned prior art has the following problems. In a cylinder that uses a dust-proof cover, stress repeatedly acts on the bellows due to expansion and contraction, and dust and the like accumulate in the valleys of the bellows.
The bellows breaks early. For this reason, this cylinder is inferior in durability. In addition, with such a cylinder-like configuration, there is another problem in that the bellows become a resistance and the operability of the slider table deteriorates.

In a cylinder using a scraper, the scraping of dust or the like often becomes insufficient, and foreign matter is left as it is on the interface between the upper surface of the cylinder tube, which is the sliding surface of the slider table, and the scraper in sliding contact. Easy to be retained. If the slider table is continuously slid in this state, the scraper will be damaged early due to wear. For this reason, the durability of the cylinder was also poor.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a rodless cylinder excellent in dustproofness, durability and operability. Another object of the present invention is to provide a slider table having a configuration suitable for realizing the excellent rodless cylinder described above.

[0009]

In order to solve the above-mentioned problems, according to the first aspect of the present invention, a cylinder tube, a piston movably accommodated in the cylinder tube, and a tube extending in the longitudinal direction of the tube. A rodless cylinder including a slit extending and communicating between the inside and outside of the tube, and a slider table provided outside the cylinder tube and connected to the piston via the slit. the dust cover which covers the slit-forming surface, before SL is communicated interpolation into the cover insertion hole formed in the slider table, characterized by being configured the slider table along the same dustproof cover so as to reciprocate rodless The cylinder is the gist.

According to a second aspect of the present invention, in the first aspect, the cross sections of the dustproof cover and the cover insertion hole are both substantially U-shaped. According to the third aspect of the present invention, in the first or second aspect, a gap is provided between the dustproof cover and the cover insertion hole, and the slider table is in a non-contact state with the dustproof cover. It was decided to reciprocate.

According to a fourth aspect of the present invention, in any one of the first to third aspects, a notch long hole for attaching a cover extending along a longitudinal direction of the dustproof cover is provided at an edge of the dustproof cover. Is formed.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, a ridge for preventing rebound is provided on both sides of the slit on the slit forming surface of the cylinder tube. The both side edges of the dustproof cover are disposed below the tip of the dustproof cover.

According to a sixth aspect of the present invention, in the fifth aspect, a plurality of grooves are formed on an outer surface of the ridge for preventing rebound. According to the seventh aspect of the present invention, there is provided a rodless cylinder slider table in which a cover insertion hole through which a dustproof cover that covers at least a slit forming surface of a cylinder tube is formed so as to extend along its own traveling direction. This is the gist.

According to the invention described in claim 8, the cylinder tube is provided.
And movably housed in its cylinder tube
The piston extends along the length of the tube and is
A slit communicating the inside and outside of the tube with the cylinder tube.
And arranged through the slit
A slider table having a slider table connected to a piston.
In a dress cylinder, a small amount of the cylinder tube
At least the dust cover that covers the slit forming surface is
At the same time as the slider table.
Insert the dustproof cover into the formed cover insertion hole,
Move the slider table back and forth along the dustproof cover.
Rodless syringe characterized in that it is configured to
Da shall be its gist. Hereinafter, the “action” of the present invention will be described. According to the invention described in claims 1 to 6 and claim 8 ,
When a fluid is supplied to and discharged from a pressure space in a cylinder tube defined by a piston, the piston and the slider table move integrally along the longitudinal direction of the tube by the action of the pressure of the fluid.

According to this configuration, at least the slit forming surface of the cylinder tube is covered with the dustproof cover, so that the slit is not exposed to the outside. Therefore, dust or the like is prevented from entering the cylinder through the slit. For this reason, it is possible to obtain a cylinder that can withstand use in a polluted environment with a lot of dust, chips, cutting oil, etc., that is, a cylinder with excellent dustproofness.

With this configuration, it is possible to avoid a situation in which the sliding resistance of the slider table is increased due to foreign matter. Moreover, since the hollow portion is formed by providing the cover insertion hole, even if a large slider table is provided, an increase in weight is prevented. As a result, a decrease in the operability of the cylinder can be prevented.

Further, with this configuration, a member (for example, a scraper) that comes into sliding contact with the cylinder tube side is not necessarily required. Achieving dustproof even without contact contributes to improvement of the operability and durability of the cylinder.

According to the second aspect of the present invention, since the cross sections of the dustproof cover and the cover insertion hole are both substantially U-shaped, dust can be more reliably prevented from being formed on the slit forming surface as compared with a simple shape. Can be planned. Further, when the dustproof cover has such a cross-sectional shape, the rigidity can be increased.

According to the third aspect of the present invention, since the slider table maintains the non-contact state with the dustproof cover, the slider table does not receive resistance from the dustproof cover during reciprocation. Therefore, the operability of the slider table is improved.

According to the fourth aspect of the present invention, the use of the cutout elongated hole at the edge of the dustproof cover makes it possible to remove the dustproof cover without completely removing the screw for attaching the dustproof cover from the screw hole. Can be attached and detached. Further, with this configuration, the tension of the dust-proof cover can be adjusted when the screw is tightened. As a result, the assembling work of the cylinder becomes easy.

According to the fifth aspect of the present invention, if there are ridges provided on both sides of the slit for preventing rebound, the ridge becomes an obstacle, and dust, chips, cutting oil and the like enter from below. It becomes difficult to do. In addition, the fact that both side edges of the dustproof cover are disposed below the tip of the ridge also has a positive effect in preventing the entry of dust and the like.

According to the sixth aspect of the present invention, when a plurality of grooves are formed on the outer surface of the ridge for preventing rebound, intrusion of dust and the like is more reliably prevented. According to the seventh aspect of the invention, since the slider table having the cover insertion hole formed therein is used as the slider table, the dustproof cover can be provided so as to penetrate the slider table. With this configuration, even when the dust cover is inserted, the upper surface of the slider table remains exposed to the outside. Therefore, the work or the like can be supported on the surface, and the basic function of the slider table is not impaired.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] Hereinafter, a rodless cylinder according to an embodiment of the present invention will be described in detail with reference to FIGS.

As shown in FIGS. 1 to 3, the cylinder tube 1 constituting the rodless cylinder S1 of this embodiment has a substantially rectangular and tubular cross section formed by extrusion molding of aluminum or the like. It is a member. A slit 2 is formed at the center of the upper surface of the cylinder tube 1. The slit 2 extends along the longitudinal direction of the tube and communicates with the inside and outside of the cylinder tube 1.
End brackets 3 and 4 are fixed to both ends of the cylinder tube 1, respectively. Cylinder tube 1
Inside, cylindrical collars 5 and 6 are fixed corresponding to these end brackets 3 and 4. A pair of supply / discharge ports 7 is provided on the end bracket 4 located on the right side in FIG. The upper one of the supply / discharge ports 7 is connected to the right pressure chamber 9 via the right collar 6. The lower one is a communication hole 1 formed in the lower part of the cylinder tube 1 along the longitudinal direction of the tube.
It is connected to 0. The communication hole 10 is further connected to the left pressure chamber 11 via the left collar 5.

Outside the slit 2, a first seal belt 12 is stretched. Both ends of the seal belt 12 are fixed to the end brackets 3 and 4, respectively. The first seal belt 12 plays a role of preventing dust and the like from entering the inside of the cylinder tube 1 through the slit 2 in the immediate vicinity of the slit 2. On the other hand, a second seal belt 13 is stretched inside the slit 2. And this seal belt 1
Reference numeral 3 denotes a slit 2 in which a pressure fluid (pressurized air in the present embodiment) supplied from the supply / discharge ports 7 and 8 to the pressure chambers 9 and 11 is used.
It plays a role in preventing leakage to the outside via the.

There is a space inside the cylinder tube 1 for accommodating the piston 14 and the yoke portion 15. The pistons 14 are provided in a pair on the left and right, and a yoke portion 15 is interposed between them. Each of the pistons 14 has a protruding portion that can fit into the collars 5 and 6. The space in the cylinder tube 1 is divided into the above-described two regions of the right pressure chamber 9 and the left pressure chamber 11 by the presence of the piston 14 and the yoke portion 15. Therefore, when pressurized air is supplied and discharged into the pressure chambers 9 and 11 through the supply and discharge ports 7 and 8, both the pistons 14 and the yoke portion 15 integrally move in the cylinder tube 1 along the tube longitudinal direction. Slide.

As shown in FIG. 3B, the yoke 1
5 is constituted by a trunk 18, a head 19 and a neck 20. The body 18 is provided inside the cylinder tube 1. The head 19 is exposed to the outside of the cylinder tube 1 through the slit 2, and a slider table 21 as a base for attaching a work is connected to a top surface thereof via a connecting member (original slider table) 22. I have. The neck 20 comprises such a head 19 and a torso 18
And are connected. The slider table 21 also moves integrally along the longitudinal direction of the tube with the movement of the piston 14 and the like. At both stroke ends on the upper surface of the cylinder tube 1, shock absorbers 23 for buffering the impact of the slider table 21 are provided. The support member on which the shock absorber 23 is supported includes the shock absorber 2
3, a stopper bolt 24 is attached. The stopper bolt 24 plays a role in determining the end position of the stroke.

As shown in FIG. 1B, the slider 2
A belt presser 25 is provided on the lower surface of 1. The belt presser 25 is fixed to a bearing (not shown) via a shaft, and is urged by a spring from above. Therefore, the belt presser 25 has a function of fitting the first seal belt 12 into the slit 2 by the urging force of the spring with the shaft as a fulcrum.

As shown in FIG. 3, the slider table 21 of the present embodiment includes a table main body 26 and a lid 27 fixed to an upper portion of the table main body 26. The table body 26 is fixed to the upper surface of the connecting member 22 by bolts 28. A groove having a predetermined shape is formed on the upper surface of the table main body 26. Therefore, the lid 27 is attached to the upper surface of the table main body 26 by the bolt 29.
, The cover insertion hole 3 with a U-shaped cross section
0 is formed. The cover insertion hole 30 penetrates through a side end face of the slider table 21 on the traveling direction side. The upper surface of the lid 27 is flat for the convenience of mounting the work.

Next, the configuration of the dust cover 31 which plays the role of dust protection in this embodiment will be described. In addition, for the sake of simplicity, the dust cover 3
1 is hatched.

As shown in FIGS. 1 to 3, the dustproof cover 31 is a long plate-like material having a substantially U-shaped cross section made of a light metal such as aluminum or an alloy thereof or an iron alloy such as stainless steel. . The reason for choosing such a metal material rather than just iron is that such a material is less likely to rust. This is because if rust is generated, a foreign substance is newly generated, which leads to a reduction in dust resistance. As shown in FIG. 3 (d), two long cutout holes 32 for attaching the cover are formed at the edge of the dustproof cover 31 and extend in the longitudinal direction of the dustproof cover 31.

The dust cover 31 is attached as follows. A pair of cover support plates 33 are fixed to upper surfaces of both ends of the cylinder tube 1 by bolts 34. Screw holes are formed at two places on the upper surface of the cover support plate 33. In addition, in these screw holes, both ends of the dustproof cover 31 are fixed with screws 36. As a result, the substantially U-shaped dustproof cover 31 covers the entire upper surface of the cylinder tube 1 as the slit forming surface.

At this time, the dustproof cover 31 is inserted into the cover insertion hole 30 formed in the slider table 21. However, as shown in FIGS. 3B and 3C, the space between the dustproof cover 31 and the cover insertion hole 30 is
A gap 37 of a certain size is secured. Therefore, the slider table 21 can reciprocate with the dustproof cover 31 in a non-contact state.

Hereinafter, the characteristic effects of the present embodiment will be listed. (A) In this configuration, the upper surface, which is the slit forming surface of the cylinder tube 1, is covered by the dustproof cover 31. Therefore, the slit 2 is not exposed to the outside, and dust and the like are prevented from entering the cylinder S1 through the portion. For this reason, the cylinder S1 which can withstand use in a polluted environment where there is a lot of dust, chips, cutting oil, etc.
That is, it is possible to obtain the cylinder S1 having excellent dust resistance.

(B) Further, in this configuration, it is possible to prevent the sliding resistance of the slider table 21 from increasing due to foreign matter. Moreover, since the hollow portion is formed by providing the cover insertion hole 30, even when the large slider table 21 is provided, an increase in weight is prevented. As a result, a decrease in the operability of the cylinder S1 can be prevented.

(C) Further, according to this configuration, a member (for example, a scraper) that comes into sliding contact with the cylinder tube 1 side is not necessarily required. As described above, the fact that dust prevention can be achieved even without contact will surely contribute to the improvement of the operability and durability of the cylinder S1.

(D) In the cylinder S1, the cross sections of the dustproof cover 31 and the cover insertion hole 30 are both substantially U-shaped. Therefore, dust can be more reliably prevented from forming on the slit forming surface as compared with a case where the slits have a simple shape. When the dust cover 31 has such a cross-sectional shape, the rigidity of the dust cover 31 can be increased.

(E) In this cylinder S1, since the slider table 21 maintains the non-contact state with the dust-proof cover 31, the slider table 21 may receive resistance due to sliding from the dust-proof cover 31 during reciprocation. Absent. Therefore, the operability of the slider table 21 is improved.

(F) In the cylinder S1, if the notch long hole 32 at the edge of the dustproof cover 31 is used, the dustproof cover can be removed without completely removing the screw 36 for mounting the dustproof cover from the screw hole. 31 can be attached and detached. With this configuration, the tension of the dust-proof cover 31 can be adjusted when the screw 36 is tightened. As a result, the assembling work of the cylinder S1 can be easily performed.

(G) With the structure of the cylinder S1,
Only the upper surface of the cylinder tube 1 is covered by the dustproof cover 31, and the other surfaces remain exposed to the outside. That is, since the peripheral surface of the cylinder tube 1 is not entirely covered, the cylinder S1
It is not difficult to set up. This is advantageous when the cylinder S1 has a long stroke. That is, even if the long cylinder S1 can support not only both ends but also the entire lower surface, the bending of the cylinder tube 1 can be prevented.

(H) In this cylinder S1, one cylinder table 21 is constituted by two members, a table body 26 and a lid 27. Therefore, after the dustproof cover 31 is attached, the lid 27 is
It is also possible to attach to. From the above, assembly can be easily performed. Also, the lid 27 can be replaced according to the type and size of the work to be attached, which is very convenient. [Second Embodiment] Another embodiment of the present invention will be described below in detail with reference to FIGS. here,
The description will focus on the differences from the first embodiment, and the common parts will only be given the same member numbers.

As shown in FIGS. 4 and 5, in the cylinder tube 1 of the rodless cylinder S2, cover support portions are protrudingly provided at the upper portions of the inner end faces of the end brackets 3 and 4, respectively. A dustproof cover 3 having a long shape and a substantially U-shaped cross section is provided on the upper surfaces of these cover support portions.
1 is fixed by a screw 36. The dustproof cover 31 of the present embodiment is formed with a simple circular screw hole (not shown) instead of the cutout long hole 32 as in the first embodiment.

The dustproof cover 31 is inserted into the cover insertion hole 30 of the slider table 41 having a substantially U-shaped cross section. Here, the slider table 41 of the present embodiment
Differs from Embodiment 1 which consists of two members, and consists of one member. The slider table 41 is directly connected to the head 19 without the interposition of the connecting member 22. Further, both side surfaces of the slider table 41 do not protrude from the side surfaces of the cylinder tube 1.

On the other hand, as shown in FIG. 5A and FIG.
Are provided on both sides of the ridge. The upper surface of the ridge 42 for preventing rebound is horizontal to the upper surface of the cylinder tube 1 and the inner surface is vertical to the upper surface. The outer side surface 42a of the ridge 42 for preventing rebound is an inclined surface. As shown in FIG. 5D, a plurality of grooves 43 are formed in the outer side surface 42a along the longitudinal direction of the tube. Then, both side edges of the dustproof cover 31 are arranged so as to be lower than the tip of the ridge 42, that is, the two sides 41 and 42 are overlapped.

The characteristic effects of the present embodiment will be listed below. (A) Even with this configuration, the basic configuration is the same as that of the first embodiment, so that
It goes without saying that the functions and effects of b, c, d, e, and g are exhibited.

(B) This configuration is characterized in that ridges 42 provided on both sides of the slit 2 for preventing rebound are provided. And since such a ridge 42 becomes an obstacle on the invasion path of dust, cutting chips, cutting oil, etc.,
Intrusion of dust and the like from below can be prevented. The arrangement of both side edges of the dustproof cover 31 below the tip of the ridge 42 also has a positive effect in preventing dust and the like from entering. That is, the cylinder S2 has high dustproofness.

(C) With this configuration, the presence of the plurality of grooves 43 formed on the outer surface of the projecting ridge 42 for preventing rebound prevents the intrusion of dust and the like more reliably. This is because dust and the like easily adhere to the outer surface on which the groove 43 is formed.

(D) Slider table 41 of this embodiment
Can be manufactured by, for example, extrusion molding. In addition, since it is made of a single member, it is advantageous in reducing the number of parts and the like.

(E) The slider table 41 does not extend to the side of the cylinder tube 1 and does not increase the width of the cylinder S2. Therefore, it can be said that the configuration of the present embodiment is more suitable for miniaturization than the configuration of the first embodiment.

The present invention can be modified as follows, for example. (1) The cross-sectional shape of the dustproof cover 31 is not limited to the U-shape as in the first and second embodiments. For example, any shape such as a rectangular shape, an L shape, and a C shape may be used as long as it covers at least the upper surface of the cylinder tube 1 that is the slit forming surface. Of course, the shape of the cover insertion holes 30 of the slider tables 21 and 41 can be changed with the change of the dustproof cover 31. However, the dustproof cover 31 and the cover insertion hole 3
The cross-sectional shape of 0 does not necessarily have to be a similar (same kind) shape.

(2) The slider table 21 of the type of the first embodiment may be structured so as not to protrude from the side of the cylinder tube 1 as in the second embodiment. By doing so, the volume of the slider table 21 is reduced, so that the total weight is naturally reduced. Therefore, the operability is further improved.

(3) The slider tables 21, 41
In the above, a hollow portion may be provided in a portion other than the cover insertion hole 30 to thereby reduce the weight. (4) Instead of the notch long hole 32 which is a fastening means insertion part in the dustproof cover 31, a long hole which is not notched may be provided. In addition, these long holes may be provided at one end edge in addition to being provided at both end portions of the dustproof cover 31.

(5) A member having the same function as the protrusion 42 in the second embodiment may be separately mounted on the upper surface of the cylinder tube 1. (6) The dustproof cover 31 is not limited to a rustproof metal product such as aluminum, but may be a resin molded product such as plastic. This is because such a material is also resistant to rust.

Here, in addition to the technical ideas described in the claims, the technical ideas grasped by the above-described embodiment are listed below. (1) The slider table of the rodless cylinder according to claim 7, wherein a cross-section of the cover insertion hole is similar or similar to a cross-sectional shape of the dustproof cover.

(2) The slider table of the rodless cylinder according to claim 7, wherein a cross section of the cover insertion hole is substantially U-shaped. (3) The slider table of the rodless cylinder according to claim 7, wherein the slider table includes a table body and a lid, and the cover insertion hole is formed between both members. With this configuration, the assembly can be facilitated.

(4) The slider table of a rodless cylinder according to claim 7, wherein the slider table is an extruded product made of one member. With this configuration,
The number of parts can be reduced.

(5) A dustproof cover for preventing dust and the like from entering through a slit extending along the longitudinal direction of the cylinder tube, and having a substantially U-shaped cross section and having substantially the same length as the cylinder tube. A dust-proof cover for a rodless cylinder, wherein a hole structure is formed at an end portion of a rust-proof metal plate material so that fastening means can be inserted at the time of fastening to a support portion on the upper surface side of the cylinder tube. With this configuration, it is possible to obtain a favorable dust-proof property or the like when used in a cylinder.

(6) In the technical idea (5), a dustproof cover for a rodless cylinder, wherein the hole structure through which the fastening means can be inserted is a notched long hole. (7) A cylinder tube for a rodless cylinder in which projections for preventing rebound are projected on both sides of the slit on the slit forming surface. With this configuration, it is possible to obtain a favorable dust-proof property or the like when used in a cylinder.

(8) In the technical idea (7), a cylinder tube for a rodless cylinder, wherein a plurality of grooves are formed on an outer surface of the ridge for preventing rebound. (9) In the technical concepts (7) and (8), the protrusion for preventing rebound is a cylinder tube for a rodless cylinder, which is integrally formed when the cylinder tube is extruded.

The technical terms used in this specification are defined as follows. "Fastening means: bolts, screws, nails, etc."

[0061]

As described in detail above, claims 1 to 6 and
According to the invention described in claim 8 , a rodless cylinder excellent in dustproofness, durability and operability can be provided.

According to the second aspect of the present invention, it is possible to more reliably prevent dust on the slit forming surface and to increase rigidity as compared with a simple shape. Claim 3
According to the invention described in (1), since the slider table does not receive the resistance from the dust-proof cover, it is advantageous by improving the operability.

According to the fourth aspect of the present invention, as a result of the provision of the notched long holes, the assembling work of the cylinder can be facilitated. According to the fifth aspect of the present invention, since the projections for preventing rebound are provided, the dustproofness can be further improved.

According to the sixth aspect of the invention, by providing a plurality of grooves on the outer surface of the ridge for preventing rebound, further excellent dustproofness can be obtained. Claim 7
According to the invention described in (1), since the cover insertion hole through which the dustproof cover can be inserted is formed, the use of this slider table makes it possible to realize the excellent rodless cylinder described above.

[Brief description of the drawings]

FIG. 1A is a plan view of a rodless cylinder according to a first embodiment, and FIG. 1B is a front sectional view thereof.

FIG. 2 is a front view of the rodless cylinder.

3A is a sectional view taken along line BB of FIG. 1B, FIG.
2 is a sectional view taken along line AA of FIG. 2, (c) is a left side view of the rodless cylinder, and (d) is a partial plan view showing a dustproof cover.

FIG. 4A is a plan view of a rodless cylinder according to a second embodiment, and FIG. 4B is a front view thereof.

5A is a sectional view taken along line YY of FIG. 4B, FIG.
4B is a cross-sectional view taken along line XX of FIG. 4B, FIG. 4C is a left side view of the rodless cylinder, and FIG. 4D is an enlarged cross-sectional view showing a ridge formed on the cylinder tube for preventing rebound.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Cylinder tube, 2 ... Slit, 14 ... Piston, 21 ... Slider table, 30 ... Cover insertion hole, 3
1, 41: dustproof cover, 32: notched long hole, 37: void, 42: ridge for preventing rebound, 43: groove, S1, S
2… Rodless cylinder.

Claims (8)

(57) [Claims] 1. A cylinder tube, a piston movably accommodated in the cylinder tube, a slit extending along the longitudinal direction of the tube and communicating between the inside and outside of the tube, and disposed outside the cylinder tube. with the rodless cylinder and a slider table coupled to said piston through said slit, a dustproof cover for covering at least the slit-forming surface of the cylinder tube, before Symbol slider table formed in a cover through hole interpolation through allowed, rodless cylinders, characterized by being configured so as to reciprocate the slider table along the dust cover. 2. A cross section of each of the dustproof cover and the cover insertion hole is substantially U-shaped.
The rodless cylinder described in 1. 3. A gap is provided between the dustproof cover and the cover insertion hole, and the slider table reciprocates in a non-contact state with respect to the dustproof cover. Or the rodless cylinder according to 2. 4. The dustproof cover according to claim 1, wherein a notch elongated hole for attaching the cover is formed at an edge portion of the dustproof cover and extends along a longitudinal direction of the dustproof cover. Rodless cylinder according to the item. 5. A ridge for preventing rebound is provided on both sides of the slit on the slit forming surface of the cylinder tube, and both side edges of the dustproof cover are arranged below a tip of the ridge. The rodless cylinder according to any one of claims 1 to 4, wherein 6. The rodless cylinder according to claim 5, wherein a plurality of grooves are formed on an outer surface of the ridge for preventing rebound. 7. A cover insertion hole through which a dustproof cover that covers at least the slit forming surface of the cylinder tube can be inserted.
A slider table of a rodless cylinder formed so as to extend along its own traveling direction. 8. A cylinder tube and its cylinder tube.
Piston movably housed in the tube and tube length
A tube extending along the hand direction and communicating between the inside and outside of the tube
Lit and disposed outside the cylinder tube
A slider connected to the piston through the slit
And at least a slit forming surface of the cylinder tube.
When installing a dustproof cover on the cylinder tube
The inside of the cover insertion hole formed in the slider table
Through the dustproof cover, and then
The slider table is configured to reciprocate.
A rodless cylinder characterized by the following.