JPH042761Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a protective cover mounting structure that can appropriately protect a linear guide rail used in a machine tool or the like by covering it.

(Prior Art) As is well known, in linear guide rails applied to machine tools, etc., chips, cutting water, and other dust are deposited on the rails between the rails and moving objects that move along the rails. Care must be taken to ensure that no jamming occurs between the two.

Therefore, conventionally, as a means for protecting the linear guide rail, a means as shown in FIG. 8, for example, has been adopted.

This means connects one end portion of a retractable protective cover body 20, which is entirely formed into a retractable bellows shape and has a substantially U-shaped cross section, to one end portion 1a of the linear guide rail 1; The other end is connected to one side of the moving body 2. In addition, in this type of linear guide rail, two movable bodies 2, 2a may be installed side by side, but in such a case, a protective cover body 20a of a predetermined size and having a U-shaped cross section is attached to the movable body. The actual situation was that there was an interposition between 2 and 2a.

(Problem to be Solved by the Invention) However, in the conventional device, since the protective cover body 20, 20a having a U-shaped cross section is simply placed over the rail 1 to cover the rail 1, as shown in FIG. A large gap 21 was created between the lower part of the protective cover bodies 20, 20a and the linear guide rail 1. Therefore, in the past, there was a problem in that dust entered through the gap 21 and adhered to the rail 1, making it impossible to completely protect the rail.

In addition, one of the conventional bellows-shaped protective cover bodies 20
In addition to the high parts cost, the protective cover body 20
However, if the material is repeatedly expanded and contracted over a long period of time, cracks will occur in the expanded and contracted portions, and this poses problems in terms of its service life.

Therefore, the object of the present invention is to appropriately prevent the formation of an unreasonable gap between the protective cover body and the linear guide rail by a simple means, thereby making it possible to completely protect the rail. do.

(Means for Solving the Problems) When covering a linear guide rail, the present invention takes into account that a part of the protective cover body is brought into close contact with the side surface of the rail so that no gap is created between them, and the above-mentioned conventional method is adopted. It aims to solve problems. In addition, when covering the side rails of a moving body, the present invention eliminates the need for expansion and contraction by moving one end of the protective cover body to follow the movement of the moving body without fixing it to the rail. This is intended to simplify the structure of the protective cover body.

That is, firstly, the present invention has a movable body 2 that reciprocates along the linear guide rail 1 on one side of the movable body 2.
Both ends 16, 1 are formed into a substantially C-shaped cross section.
6 are connected to each other at one end of a protective cover body 9 formed to have a resilient force to close inwardly facing each other, and the protective cover body 9 is connected to both tip ends 1 of the protective cover body 9.
6 and 16 are provided to abut against both side surfaces of the linear guide rail 1 with elastic force to cover a portion of the linear guide rail 1 located on one side of the moving body 2, and the protective cover body 9 is , moving body 2
In order to maintain the covered state of the portion of the linear guide rail 1 located on one side of the moving body 2 when moving along the linear guide rail 1 as the moving body 2 moves, at least its entire length is covered by the reciprocation of the moving body 2. In order to maintain the two end portions 16, 16 of the portion that is set to be larger than the movement dimension and protrude outward from the end of the linear guide rail 1 on the other end side of the protective cover body 9 in an open state. This is a linear guide rail protection structure in which a shape retaining means 14 is provided.

Further, in the above configuration, the present invention provides a protective cover at one end of the linear guide rail 1 to close a gap 17 formed between the protective cover body 9 and the one end of the linear guide rail 1. This is a protection structure for a linear guide rail, which is provided with a seal body 11 that slidably contacts the inner surface of a body 9.

Secondly, the present invention provides that the two movable bodies 2, 2a that reciprocate along the linear guide rail 1 are formed with a substantially C-shaped cross section on each inner side surface, and both tip ends 1
Both ends of the protective cover body 4 are connected to each other, and both ends of the protective cover body 4 are formed so as to have elastic force to close the legs in the inward direction where the protective cover body 4 faces each other, and both ends of the protective cover body 4 are linear. This is a protection structure for a linear guide rail that is provided to cover a portion of the linear guide rail 1 that is in contact with both side surfaces of the guide rail 1 with elastic force and is located between the movable bodies 2 and 2a.

In addition, in the present invention, in the above structure, an oil coating material 8 impregnated with oil is provided on the inner surface of the protective cover body 4 so as to be able to come into sliding contact with the linear guide rail 1. It is a structure.

(Function) In the first configuration of the present invention described above, since both end portions 16, 16 of the protective cover body 9 abut against both side surfaces of the linear guide rail 1 due to their elastic force, the protective cover body 9 comes into contact with both side surfaces of the linear guide rail 1. An unreasonable gap through which dust can enter will not be created between the cover body 9 and both side surfaces of the rail 1. Further, since the protective cover body 9 has one end connected to the movable body 2, it moves following the movement of the movable body 2, but at that time, the protective cover body 9 has both ends 16, 16 It slides while in contact with both sides of the rail 1, maintaining the covered state of the rail. Furthermore, the dimensions of the protective cover body 9 are set to be longer than at least the reciprocating distance of the movable body 2, and are set so as to cover the entire rail portion on one side of the movable body 2. A predetermined rail portion on one side of the body 2 can be protected at all times. Therefore, there is no need to form the protective cover body 9 into an elastic bellows shape or the like. Furthermore, both end portions 16, 16 on the end side of the protective cover body 9, which protrude outward from the end of the linear guide rail 1, are maintained in an open state by the shape retaining means 14. When this part moves toward the linear guide rail 1 side, the distal end portions 16, 16 in the closed state do not cause any inconvenience such as unduly catching on the end portion of the rail 1.

Furthermore, in a method in which a sealing body 11 is provided at one end of the linear guide rail 1 and slidably abuts on the inner surface of the protective cover body 9, one end of the linear guide rail 1 and the inner surface of the protective cover body 9 are provided. The gap 17 formed between the side surfaces can be closed, and dust intrusion from the outside into the rail 1 can be more completely prevented.

Furthermore, in the second configuration of the present invention, since both end portions 15, 15 of the protective cover body 4 abut against both side surfaces of the rail 1 due to their elastic force, undesirable contact occurs at the abutting portions. Both moving bodies 2,
The cover of the rail 1 located between the rails 2a can be completely covered. Furthermore, since both ends of the protective cover body 4 are connected to each moving body 2, 2a,
Also, no gap is created at both ends of the protective cover body 4 through which dust can enter.

Furthermore, in the means in which the oil coating material 8 is provided on the inner surface of the protective cover body 4, the oil coating material 8 coats oil on the surface of the linear guide rail 1 when the movable bodies 2, 2a move, thereby protecting the surface of the linear guide rail 1. The rail 1 can be automatically lubricated without removing the cover body 4.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In FIG. 1, 1 indicates a linear guide rail having a predetermined length. 2 and 2ad are movable bodies (sliders) fitted on the upper surface side of the rail 1 so as to be slidable along the rail 1, and these are arranged at a constant interval from each other and have a common structure on the upper surface side. Workpiece mounting table 3 is installed.

Reference numeral 4 denotes a protective cover body for covering the rail position between the movable bodies 2 and 2a, and the cover 4 is made of synthetic resin 6 on the surface of a metal core material 5 having a substantially C-shaped cross section as shown in FIG. The lower tip portions 15, 15 are formed so as to have elasticity so as to be closed in the direction of arrow a. Further, as shown in FIG. 3, the protective cover body 4 is set such that its tip portions 15, 15 sandwich both side surfaces of the rail 1, and both ends in the longitudinal direction are attached to the insides of the movable bodies 2, 2a. The brackets 7, 7 are sandwiched between substantially arc-shaped projecting pieces and push pieces 7a, 7a screwed thereto. Reference numeral 8 denotes an oil applicator attached to the inside of the protective cover body 4 in the longitudinal direction substantially in the center thereof as shown in FIG. It is set as follows.

Similar to the protective cover body 4 described above, 9 and 9a are formed by coating the surface of a metal core material with a C-shaped cross section with resin, and both tip portions 16 and 16 are resilient in the direction of closing inward. These are other protective cover bodies having force, and these are set so as to sandwich and cover both sides of the end side of the linear guide rail 1 located on the outer side of each movable body 2, 2a as shown in Fig. 4. One end thereof is connected to the outer side surface of each moving body 2, 2a. Further, the protective cover bodies 9, 9a cover the rail position on the outer end side of each slider 2, 2a even when the movable bodies 2, 2a are located at either the right end or the left end of the rail 1, respectively. is set to the length you want. 10, 10a are each protective cover body 9, 9a
This is a bracket and a pusher piece for connecting one end of the bracket to the movable body 2, 2a, and has the same structure as the bracket 7 and the pusher piece 7a described above.

Reference numerals 11 and 11 denote seal bodies made of C-shaped or ring-shaped felt, which are arranged at both ends of the linear guide rail 1, respectively. They are fitted into the grooves 13, 13, respectively, and are provided so as to come into contact with the inner circumferential surface of the protective cover 9 so as not to impair the elasticity of the tips 16, 16 of the protective cover 9, as shown in FIG. ing. Reference numerals 14 and 14 designate caps that are fitted onto the outer ends of the protective cover bodies 9 and 9a in order to maintain the shape of the outer ends of the protective cover bodies 9 and 9a in a C-shaped cross section. Corresponds to shape preservation means. The cap 14 has, for example, a groove 19 formed between double circular convex portions 18, 18a, into which the end of the protective cover body 9 is inserted, as shown in FIG.

Since this embodiment has the above-described configuration, first, as shown in FIG.
Covered in a. Also, both sliders 2, 2a
The rail portion located between the two is connected to the other protective cover body 4.
Since the linear guide rail 1 is covered with a protective cover, the entire surface of the linear guide rail 1 is covered with a protective cover.

As shown in FIG.
5 and 16, 16 are in a state where they are in contact with both sides of the rail 1 due to elastic force and sandwiched between them, so that a proper seal is formed between each of these tips and the rail 1, and the rail 1 is removed from the relevant portion. Unwarranted intrusion of dust into the sides is prevented to the utmost.

In addition, seal bodies 1 provided at both ends of the rail 1
1 and 11 are in contact with the respective inner surfaces of the protective cover bodies 9 and 9a, so that dust flows from the gap 17 between the end of the rail 1 and the protective covers 9 and 9a to the rail 1 side as shown by arrow b. This also completely prevents the entry of foreign matter.

On the other hand, since both ends of the protective cover body 4 attached between the two movable bodies 2 and 2a are connected to each side surface of the movable bodies 2 and 2a, the protective cover body 4 can be accessed from both ends of the protective cover body 4. It is also possible to appropriately prevent dust from entering into the interior of the structure.

Next, if the movable bodies 2, 2a are moved, each protective cover body 4, 9, 9a will be moved accordingly.
At that time, the tip 1 of each protective cover body 4, 9, 9a
5, 15 and 16, 16 slide while maintaining a sealed state in which they are in contact with both side surfaces of the rail 1. Since the protective cover bodies 9, 9a were set in advance to be larger than the reciprocating dimension of the movable bodies 2, 2a, and the other end protruded outward from the end of the rail 1, the movable bodies 2, 2a were Even when the rail 1 is moved, the entire area of both ends of the rail 1 can be appropriately covered by the protective cover bodies 9, 9a.

Further, the other end portions of the protective cover bodies 9, 9a that protrude outward from the ends of the rail 1 are maintained in an open state with their tip portions 16, 16 by caps 14, 14. Therefore, when the other end side of the protective cover bodies 9, 9a moves toward the rail 1 side, the tip portions 16, 16 do not get caught on the end of the rail 1, and the both sides of the rail 1 It will be guided smoothly as if sandwiching it. That is, if the caps 14, 14 are not present, the tips 16, 16 on the other end side of the protective cover bodies 9, 9a protruding outward from the rail 1 will be in a closed state as shown in FIG. In this case, when the portion moves toward the rail 1, the tip portions 16, 16 get caught on the end of the rail 1, and the movable bodies 2, 2a cannot move smoothly. In addition, a situation may arise in which the tips 16, 16 cannot properly sandwich both sides of the rail 1, and the protective cover body 9,
There is also a risk that 9a may come off the rail 1. However, as mentioned above, this kind of difficulty lies in the cap 14,
This can be appropriately prevented by maintaining the other end sides of the protective cover bodies 9 and 9a in a predetermined open state using 14.

Furthermore, when the movable bodies 2, 2a move, the oil coating material 8 attached to the protective cover body 4 slides on the rail 1, naturally supplying and coating oil onto the rail 1.

In the above embodiment, the cap 14 was fitted to the end of the protective cover body 9 to maintain its shape.
The shape retaining means according to the present invention is by no means limited to this. In short, any means may be used as long as it is capable of maintaining both tip ends 16, 16 of the portion of the linear guide rail 1 that protrudes outward from the end thereof in an open state. However, if it is formed as a cap that fits onto the end as described above, it is easy to attach, and the sharp end of the protective cover body 9 can be covered, making it safe to handle.

Further, although the protective cover bodies 4 and 9 according to the above embodiments are formed by coating a metal core material of a predetermined shape with resin, the present invention is not limited to this, and the specific material etc. may be used. do not have. In short, it is sufficient that the linear guide has a substantially C-shaped cross section and has the elasticity to close its legs inward so that both ends face each other, and the specific length of the linear guide is also determined. It can be changed arbitrarily depending on the specific length of the rail 1 and the amount of movement of the moving body 2.

Furthermore, the present invention does not care about the specific means for connecting the end of the protective cover body to the movable body 2, nor does it matter about the specific configurations of the movable body 2 or the linear guide rail 1.

In addition, the design of the specific configuration of each part of the present invention can be changed arbitrarily within the scope intended by the present invention.

(Effect of the invention) As described above, the present invention connects a protective cover body formed with a substantially C-shaped cross section to a moving body, and linearizes both ends of the protective cover body by its elastic force. Since it is in contact with both sides of the guide rail, both ends of the protective cover body can be brought into close contact with the side surfaces of the rail, creating a large gap between the protective cover body and the side surface of the rail unlike in the conventional case. Even if the protective cover body moves along the rail following the movement of the moving object, both ends of the protective cover body can appropriately maintain a state in contact with the side surface of the rail. Summer.

As a result, with this invention, it is possible to reliably prevent dust from entering through the gap between the protective cover body and the rail side surface and adversely affecting the rail, which was the case in the past, and to achieve complete rail protection. It has come to have a great effect.

Furthermore, in a configuration in which one end of the protective cover body is connected to the side of the movable body to cover a rail portion on one side of the movable body, the dimensions of the protective cover body are at least as large as the reciprocation of the movable body. The length is set to be longer than the moving distance so that it can cover all the rail parts on one side of the moving body, and both tips of the part of the protective cover body that protrudes outward from the rail end are set. Since the shape-retaining means for maintaining the legs in the open state is provided, cracks, etc. caused by repeated expansion and contraction are not caused in the protective cover body, unlike the conventional means of forming the protective cover body in a bellows shape that can be freely expanded and contracted. In addition, the protective cover body is easy to manufacture, reducing manufacturing costs. This is of great practical value because it can prevent both ends of the rail from getting caught on the end of the rail, causing inconvenience in its movement.

Furthermore, according to the means of the present invention in which a seal body is provided at one end of the linear guide rail and slidably abuts on the inner surface of the protective cover body, the contact between the one end of the linear guide rail and the inner surface of the protective cover body is improved. It is also possible to close the gap formed between the rails, which has the effect of completely preventing dust from entering into the rail side from the outside.

Furthermore, in a configuration in which a protective cover body is connected and provided between two movable bodies, a method in which an oil-impregnated coating material is provided on the inner surface of the protective cover body prevents the oil from being applied when the movable body moves. Since the material automatically applies oil to the surface of the linear guide rail, it can be made in a so-called maintenance-free state and has the effect of providing great convenience in handling.

[Brief explanation of the drawing]

1 to 6 show an embodiment of the present invention,
Figure 1 is a cross-sectional front view of main parts, Figure 2 is an enlarged cross-sectional view of the protective cover body, Figure 3 is a cross-sectional view taken along the line X-X in Figure 1, and Figure 4 is a cross-sectional view taken along the Y-Y line in Figure 1. 5 is a sectional view taken along the line Z--Z in FIG. 1, and FIG. 6 is a perspective view when the cap is attached to the protective cover body. FIG. 7 is a perspective view of a main part showing an example of an improper case where a cap is not attached. Fig. 8 shows a conventional example, and Fig. 8A is a perspective view;
Figure B is a cross-sectional view. 1... Linear guide rail, 2, 2a... Moving body, 4, 9, 9a... Protective cover body, 11... Seal body, 14... Cap (shape retaining means), 15,
15, 16, 16... tip.

Claims (1)

[Claims for Utility Model Registration] 1. On one side of the movable body 2 that reciprocates along the linear guide rail 1, an inner side is formed with a substantially C-shaped cross section, and the two end portions 16, 16 face each other. One end of a protective cover body 9 formed to have an elastic force to close the legs in the direction is connected, and both tip ends 16, 16 of the protective cover body 9 are elastically attached to both sides of the linear guide rail 1. It is provided to cover a part of the linear guide rail 1 that comes into contact with the generated force and is located on one side of the moving body 2,
Moreover, the protective cover body 9 can maintain a covering state of a portion of the linear guide rail 1 located on one side of the moving body 2 when moving along the linear guide rail 1 as the moving body 2 moves. Preferably, at least the entire length thereof is set to be longer than the reciprocating movement dimension of the moving body 2, and the other end side of the protective cover body 9 has both tip portions of a portion protruding outward from the end of the linear guide rail 1. A protection structure for a linear guide rail, characterized in that a shape retaining means 14 is provided for maintaining the legs 16, 16 in an open state. 2. In the protection structure for the linear guide rail described in claim 1 of the utility model registration claim, at one end of the linear guide rail 1, a protective cover body 9 is formed between the protective cover body 9 and one end of the linear guide rail 1. A protective cover body 9 is installed to close the gap 17
A protection structure for a linear guide rail, characterized in that a seal body 11 is provided to slidably abut an inner surface of the linear guide rail. 3 A substantially C-shaped cross section is formed on each inner side surface of the two movable bodies 2 and 2a that reciprocate along the linear guide rail 1, and both end portions 15 and 15 close inward so as to face each other. Both ends of the protective cover body 4 formed to have a resilient force are connected, and both tip ends 15 of the protective cover body 4 abut against both side surfaces of the linear guide rail 1 with the resilient force. A protection structure for a linear guide rail, characterized in that it is provided to cover a portion of the linear guide rail 1 located between moving bodies 2 and 2a. 4. In the protective structure for a linear guide rail as described in claim 3 of the utility model registration, an oil coating material 8 impregnated with oil is provided on the inner surface of the protective cover body 4 so as to be able to come into sliding contact with the linear guide rail 1. A protective structure for a linear guide rail characterized by being provided as much as possible.