JP2016109189A - Packaging form of direct-acting device, packaged direct-acting device, and packaging method of direct-acting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging form of a direct-acting device preventing rust from occurring over a long period, a packaged direct-acting device, and a packaging method of the direct-acting device.SOLUTION: A packaging form of a direct-acting device packages a direct-acting device 1 including: a first member; a second member attached onto the first member in a relatively linearly movable manner; and a rolling body interposed between the first member and the second member. The packaging form has a first packaging body 12 packaging and sealing the direct-acting device 1, a desiccant 13 stored in the first packaging body 12, and a second packaging body 11 interposed between the direct-acting device 1 and the desiccant 13 and passing gas.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a packaging form of a linear motion device using rolling elements such as a ball screw device or a linear guide device, a packaged linear motion device, and a packaging method of the linear motion device.

  The linear motion device is interposed between the first member, the second member, and the first member and the second member, and the first member and the second member are relatively linear with low friction. It is an apparatus provided with the rolling element which makes it movable. Examples of the linear motion device include a ball screw device, a linear guide device, and the like, which are widely used in semiconductor manufacturing devices, compression molding machines, injection molding machines, general conveyance devices, and the like.

  In such a linear motion device, grease is applied to prevent wear between the rolling elements and other members. However, the amount of grease applied in the production process of the linear motion device is the amount of grease applied, such as shipping / packing work, etc. There is a problem that it becomes less.

  Therefore, there is a ball screw device that holds grease between the screw shaft and the cover by covering the screw shaft with a cylindrical cover (see Patent Document 1).

JP 2009-299697 A

  In such a linear motion device, it is desired that rust does not occur over a long period of time from manufacture to installation of the linear motion device.

  In addition, for example, ball screw devices are generally coated with rust preventive oil on the outer surface so that rust does not occur for a certain period until delivery to the customer, and the nut is filled with rust preventive oil. Yes. When the ball screw device with anti-rust oil applied and filled is delivered, the worker cleans the anti-rust oil with white kerosene, etc., and then lubricates the grease (hereinafter referred to as the lubrication grease). ) Must be used.

  Accordingly, there is a problem that these operations take time and labor and hinder the improvement of production efficiency. In particular, it is difficult to wash away the rust preventive oil in the nut, and it must be handled carefully so as not to damage the ball screw device, which requires time and labor.

  In other linear motion devices such as a linear guide device, there is a problem that it takes time and labor to process the rust preventive oil before the device is installed, like the ball screw device.

  In order to solve such a problem, the present invention provides a packaging form of a linear motion device that prevents rust from being generated over a long period of time, a linear motion device that has been packaged, and a packaging method of the linear motion device. In addition, the present invention provides a packaged linear motion device and a packaging method for the linear motion device that reduce the time and labor required for processing the rust preventive oil before the device is installed.

In order to solve the above-mentioned problems, a packaging form of a linear motion device according to the present invention includes a first member, a second member attached to the first member so as to be relatively linearly movable, and the first member. And a rolling element interposed between the second member, and a packaging form of the linear motion device for packaging the linear motion device comprising:
A first package enclosing and sealing the linear motion device;
A desiccant contained in the first package;
It has a 2nd package which interposes between the said linear motion apparatus and the said desiccant, and lets gas pass.

  Preferably, the second package body wraps the linear motion device and has an opening.

  Preferably, the desiccant is quick lime or synthetic zeolite.

Moreover, in order to solve the said subject, the packaged linear motion apparatus of this invention is the 1st member, the 2nd member attached so that relative linear movement was possible on this 1st member, and the said 1st member A rolling element interposed between the member and the second member,
A linear motion device that is packaged by a packaging material,
A first package enclosing and sealing the linear motion device;
A desiccant contained in the first package;
It has a 2nd package which interposes between the said linear motion apparatus and the said desiccant, and lets gas pass.

Preferably, a seal member that is attached to both ends of the second member and covers a gap with the first member is provided.
Rust prevention grease is filled between the first member and the second member,
The seal member allows lubricating grease supplied by an automatic oiling system to push the anti-rust grease out of the second member through between the seal member and the first member.

In order to solve the above-mentioned problem, a packaging method for a linear motion device according to the present invention includes a first member, a second member attached to the first member so as to be relatively linearly movable, and the first member. A rolling element interposed between the member and the second member, and a packaging method for a linear motion device comprising:
A desiccant is disposed through a second package that allows gas to pass between the linear motion device and
The linear motion device, the second package, and the desiccant are wrapped and sealed with a first package.

  ADVANTAGE OF THE INVENTION According to this invention, the packaging form of the linear motion apparatus which prevents generation | occurrence | production of rust over a long period of time, the packaged linear motion apparatus, and the packaging method of a linear motion apparatus can be provided. Moreover, according to this invention, the packaged linear motion apparatus and the packaging method of a linear motion apparatus which can reduce the time and labor concerning processing of the antirust oil before apparatus installation can be provided.

It is sectional drawing which shows the structure of the nut part of a ball screw apparatus. It is a schematic diagram with which description of the packaging of a ball screw apparatus is provided. It is a perspective view which shows the structure of a linear guide apparatus. It is a schematic diagram with which it uses for description of the packaging of a linear guide apparatus.

  Next, modes for carrying out the present invention will be described with reference to the drawings.

<First Embodiment>
A ball screw device as a linear motion device according to a first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a partial cross-sectional view showing a configuration of a ball screw device 1 according to a first embodiment of the present invention. As shown in FIG. 1, the ball screw device 1 includes a screw shaft 2 as a first member and a nut 4 as a second member screwed to the screw shaft 2 via a plurality of balls 3. ing.

  The screw shaft 2 is made of an elongated cylindrical metal member, and a screw groove 2a having a substantially arc-shaped cross section is formed on the outer peripheral surface of the screw shaft 2 in a spiral shape.

  The nut 4 is formed from a substantially cylindrical metal material in which a circular through hole larger than the outer diameter of the screw shaft 2 is formed. A thread groove 4 a having a substantially arc-shaped cross section is formed in a spiral shape on the inner peripheral surface of the nut 4 so as to correspond to the thread groove 2 a of the screw shaft 2.

  The screw shaft 2 is passed through the through hole of the nut 4, and the thread grooves 2 a and 4 a face each other to form a rolling path of the ball 3. A plurality of balls 3 made of metal are loaded in the rolling path, whereby the screw shaft 2 and the nut 4 are screwed together.

  In the openings at both ends of the nut 4, a circular recess 9 is formed, and a ring-shaped seal member 6 is fitted in the recess 9. The inner peripheral surface of the seal member 6 is configured to prevent foreign matter from entering between the nut 4 and the screw shaft 2 by slidingly contacting the outer peripheral surface of the screw shaft 2 and the surface of the screw groove 2a. A grease supply port 8 is provided in the flange portion 4 b of the nut 4.

  The ball screw device 1 is a so-called top circulation type ball screw device. The nut 4 is provided with a plurality of tops 7 as circulating parts for sending the rolled ball 3 back to a predetermined point on the rolling path. The top 7 is fitted in an attachment hole 5 that penetrates the nut 4 in the radial direction. The top 7 can be formed from a sintered product or a resin material using a metal material such as Fe-2Ni-C or Fe-8Ni.

  With the above configuration, the ball screw device 1 can rotate the screw shaft 2 to cause the plurality of balls 3 to roll in the rolling path and move the nut 4 in the axial direction. The plurality of balls 3 rolling on the rolling path are configured to circulate such that when they make a round around the screw shaft 2, they are returned to the original position of the rolling path again by the top 7.

  In such a ball screw device 1, as described above, by applying rust preventive oil after manufacturing, the occurrence of rust can be suppressed by simple processing, and the storage and management of the ball screw device 1 can be simplified. can do. However, the process of removing the rust preventive oil at the customer site has been complicated. Therefore, the inventor of the present invention invented a packaged linear motion device and a packaging method for the linear motion device that enables the ball screw device 1 to be installed and used as soon as the customer opens the package as follows. did.

  As shown in FIG. 2, the packaged linear motion device 100 of the present invention double-wraps the ball screw device 1. The inner film bag 11 as the second package has an opening 11a at one end together with a cylindrical main body that covers and encloses the entire ball screw device 1.

  The outer film bag 12 as the first package contains the ball screw device 1 covered with the inner film bag 11 and is sealed using a heat seal, a zipper or the like, and is opened outside the inner film bag 11. A desiccant 13 is included at a position away from the portion 11a. Thereby, generation | occurrence | production of rust can be prevented over a long period of time. In addition, since the ball screw device 1 is double-wrapped by the inner film bag 11 and the outer film bag 12 and the opening 11a is provided in the inner film bag 11, the desiccant 13 is exhibited while exhibiting the effect of the desiccant 13. Can be prevented from contacting the ball screw device 1. There is no restriction | limiting in particular as a material of a desiccant, For example, quick lime or a synthetic zeolite is used.

  As materials for the inner film bag 11 and the outer film bag 12, plastic materials such as polyethylene resin, polypropylene resin, and polyethylene terephthalate resin are preferably used.

  Moreover, as the inner film bag 11 and the outer film bag 12, various composite material films in which a metal such as aluminum is vapor-deposited or bonded to a plastic material in addition to paper and non-woven fabric can be used. .

  When carrying, the packaged linear motion device 100 can be put in an outer box made of cardboard or the like and carried.

  As a packaging method for the ball screw device 1, the ball screw device 1 is inserted into the inner film bag 11 through the opening 11a, the outer side of the inner film bag 11 is wrapped with the outer film bag 12, and the desiccant 13 is put in and sealed. Can be used.

  The ball screw device 1 is filled with a rust preventive grease between the nut 4 and the screw shaft 2 in a static environment before use. Further, rust preventive grease or rust preventive oil is applied to the outer surfaces of the nut 4 and the screw shaft 2. As a result, it is possible to further prevent the screw shaft 2, the ball 3, and the nut 4 from being rusted before use. The antirust grease is filled between the nut 4 and the screw shaft 2 from the grease supply port 8 of the nut 4. As the grease for rust prevention, a grease having a consistency number of No. 1 having a miscibility range of 310 to 340 at 25 ° C. which is a room temperature environment is used.

  Prior to use of the ball screw device 1, the outer film 12 and the inner film 11 are removed. When the ball screw device 1 is used, lubricating grease having a consistency number of 000 having a blending consistency range of 445 to 475 is supplied from the grease supply port 8 by an automatic lubrication system at 25 ° C., which is a room temperature environment. At the start of use, the rust-preventing grease is pushed by the lubricating grease, and is gradually discharged from the slight gap 10 between the seal member 6 at both ends of the nut 4 and the screw shaft 2, and the rust-preventing grease is lubricated. Replace with grease.

  As described above, in the present invention, a soft rust preventive grease having a blending consistency range of 310 to 340 (room temperature 25 ° C.) is used, so that it is automatically pushed out by automatic lubrication grease lubrication. Is possible. On the other hand, the grease for rust prevention has a lower consistency than the grease for lubrication, and it is harder and stronger in adhesion than the grease for lubrication, so it is difficult to leak out, blocks the outside air, and exhibits a rust prevention effect. it can.

  The difference between the rust preventive grease and the lubrication grease is only the consistency, and the lubricity does not change, so there is no problem even if a little rust preventive grease remains in the ball screw device 1. For this reason, it is not necessary to clean the rust preventive grease, and the installation work time of the ball screw device 1 is shortened, so that the production efficiency can be improved.

  The seal member 6 has a configuration in which the rust-preventing grease can be automatically pushed out by automatic lubrication grease. That is, if the pressure contact force of the outer peripheral surface of the screw shaft 2 and the inner peripheral surface of the seal member 6 with respect to the surface of the screw groove 2a is strong, the rust preventive grease is difficult to be pushed out, and if the pressure contact force is weak, the sealing performance is deteriorated. Therefore, this pressure contact force is adjusted appropriately.

  According to the packaged linear motion device and the packaging method of the linear motion device, it is possible to reduce the time and labor required for processing the rust preventive oil before the device is installed.

<Second Embodiment>
The second embodiment described with reference to FIGS. 3 and 4 differs from the first embodiment in that the linear motion device is a linear guide device 21 and the second package is different. In the second embodiment, the description of the same configuration as in the first embodiment is omitted.

  As shown in FIG. 3, the linear guide device 21 according to the second embodiment of the present application straddles an elongated rectangular pillar-shaped guide rail 22 and the guide rail 22 so as to be capable of relative linear movement in the longitudinal direction of the guide rail 22. The slider 23 is fitted. FIG. 3 shows a state in which the guide rail 22 of the linear guide device 21 from which the outer film bag 12 and the inner film bag 11 are removed is attached to the attached portion 26.

  The guide rail 22 is made of metal and has a plurality of bolt holes 29 penetrating in the Z-axis direction. The length of the guide rail 22 can be appropriately adjusted according to the application. The guide rail 22 is formed with corner rolling grooves 27a, 27b and side rolling grooves 28a, 28b having a substantially arc-shaped cross section extending in the X-axis direction. Escape grooves are formed at the bottoms of the side rolling grooves 28a and 28b. The guide rail 22 is fixed to the attached portion 26 by a bolt 215 inserted into the bolt hole 29. The corner rolling grooves 27 a and 27 b and the side rolling grooves 28 a and 28 b form a rolling path along which a rolling element (not shown) rolls together with a rolling groove (not shown) formed on the slider 23.

  The slider 23 includes a metallic slider body 23a, end caps 24a and 24b attached to the front and rear of the slider body 23a in the sliding direction, and side seals 25a attached to the slider body 23 via the end caps 24a and 24b. 25b.

  The side seals 25 a and 25 b are made of an elastic body, prevent leakage of grease filled between the slider body 23 and the guide rail 22, and allow foreign matter to enter between the slider body 23 and the guide rail 22. prevent. Through holes 210a and 210b (210b not shown) are formed in the side seals 25a and 25b, and lubricating grease can be injected from the inlets formed in the end caps 24a and 24b through the through holes 210a and 210b. it can.

  As shown in FIG. 4, the packaged linear motion device 200 includes a linear guide device 21, a film bag 31 as a first package that wraps the linear guide device 21, and a second package attached to the inside of the film bag 31. It comprises a desiccant pocket 34 as a body and a desiccant 33 accommodated in the desiccant pocket 34. The film bag 31 is filled with nitrogen and sealed.

  Thereby, the packaged linear motion device 200 can keep the inside of the film bag 31 dry without bringing the desiccant 33 into contact with the linear guide device 21, and can prevent the occurrence of rust over a long period of time.

  As a packaging method for the linear motion device, a film bag 31 and a desiccant pocket 34 are formed inside the film bag 31. After the desiccant is accommodated in the desiccant pocket 34, the linear guide device 21 is moved by the film bag 31. Can be wrapped and sealed.

  The linear guide device 21 is filled with a rust preventive grease between the slider 23 and the guide rail 22 in a static environment before use. Further, rust preventive grease or rust preventive oil is applied to the outer surfaces of the slider 23 and the guide rail 22. Thereby, it is possible to further prevent the rusting of the guide rails 22, the rolling elements and the slider 23 during the period before use. The anti-rust grease is filled between the slider 23 and the guide rail 22 through the through holes 210a and 210b (210b is not shown). As the grease for rust prevention, a grease having a consistency number of No. 1 having a miscibility range of 310 to 340 at 25 ° C. which is a room temperature environment is used.

  When the linear guide device 21 is used, after the film bag 31 is removed, a lubricating grease having a consistency number of 000 having a blending consistency range of 445 to 475 at 25 ° C., which is a room temperature environment, is through-holed by an automatic lubrication system. It is supplied into the slider 23 from 210a and 210b. At the start of use, the rust-preventing grease is pushed by the lubricating grease, and is gradually discharged out of the slider 23 through a slight gap between the side seals 25a, 25b and the guide rail 22, and the rust-preventing grease. Is replaced with lubricating grease.

  According to the packaged linear motion device and the packaging method of the linear motion device, it is possible to reduce the time and labor required for processing the rust preventive oil before the device is installed.

<Other embodiments>
In the first and second embodiments described above, the case where the film bag is sealed in a state filled with air or nitrogen has been described. The present invention is not limited to this, and may be sealed in a vacuum state.

  Moreover, the packaging form of 1st Embodiment mentioned above may be used for a linear guide apparatus, and the packaging form of 2nd Embodiment may be used for a ball screw apparatus.

DESCRIPTION OF SYMBOLS 1 Ball screw apparatus 2 Screw shaft 2a Screw groove 3 Ball 4 Nut 4a Screw groove 4b Flange part 5 Mounting hole 6 Sealing member 7 Top 8 Grease supply port 9 Recess 10 Crevice 11 Inner film bag 11a Opening part 12 Outer film bag 13,33 Desiccant 21 Linear guide device 22 Guide rail 23 Slider 23a Slider body 24a, 24b End cap 25a, 25b Side seal 26 Mounted portion 27a, 27b Corner portion rolling groove 28a, 28b Side portion rolling groove 29 Bolt hole 31 Film bag
34 Desiccant pockets 100, 200 Packaged linear motion device 215 bolts

Claims (7)

A straight member comprising: a first member; a second member mounted on the first member so as to be relatively linearly movable; and a rolling element interposed between the first member and the second member. It is a packaging form of a linear motion device that wraps a motion device,
A first package enclosing and sealing the linear motion device;
A desiccant contained in the first package;
A packaging form of the linear motion device, comprising: a second package that is interposed between the linear motion device and the desiccant and allows gas to pass therethrough.   The packaging form of the linear motion device according to claim 1, wherein the second packaging body wraps the linear motion device and has an opening.   The packaging form of the linear motion device according to claim 1, wherein the desiccant is quicklime.   The packaging form of the linear motion device according to claim 1, wherein the desiccant is a synthetic zeolite. A first member, a second member mounted on the first member so as to be relatively linearly movable, and a rolling element interposed between the first member and the second member,
A linear motion device that is packaged by a packaging material,
A first package enclosing and sealing the linear motion device;
A desiccant contained in the first package;
A packaged linear motion device comprising: a second package that is interposed between the linear motion device and the desiccant and allows gas to pass therethrough. A seal member that is attached to both ends of the second member and covers a gap with the first member;
Rust prevention grease is filled between the first member and the second member,
The seal member allows a lubricating grease supplied by an automatic oiling system to push the rust preventive grease out of the second member through between the seal member and the first member. The packaged linear motion device according to claim 5, wherein the linear motion device is packaged. A straight member comprising: a first member; a second member mounted on the first member so as to be relatively linearly movable; and a rolling element interposed between the first member and the second member. A packaging method for a moving device,
A desiccant is disposed through a second package that allows gas to pass between the linear motion device and
A packaging method for a linear motion device, wherein the linear motion device, the second packaging body, and the desiccant are wrapped and sealed by a first packaging body.

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