JP4835391B2 - Linear motion device, oil supply device, electronic component mounting device - Google Patents

Description

  The present invention relates to a linear motion device, an oil supply method, and an electronic component mounting apparatus.

The linear motion device is configured by movably mounting a moving body along a rail extending in one direction. The rail and the moving body are each formed with a ball rolling surface that extends in one direction at the opposite position, and the moving body moves smoothly by rolling the ball between both rolling surfaces. is doing. Since it is necessary to keep the contact surface of both rolling surfaces and the ball in a lubricated state, conventionally, a device for automatically supplying lubricating oil to the rolling surface of the rail has been proposed as the moving body moves. (See Patent Document 1). This lubricating oil supply device is mounted on a moving body in a state where a felt impregnated with lubricating oil is housed in a casing, and when the moving body moves along the rail, the lubricating oil is fed from the felt portion that is in contact with the rail. It becomes the composition applied.
Japanese Patent Laid-Open No. 10-184683

  Since the amount of lubricating oil that can be impregnated in the felt is limited, it is necessary to replenish the felt with lubricating oil if the linear motion device operates for a certain period of time, but the felt is built in the housing. Since it is mounted on the moving body in a state, it is necessary to temporarily stop the linear motion device when replenishing. While the linear motion device is stopped, production is suspended, so it is important to complete the replenishment work in a short time and restart the linear motion device as soon as possible. Lubricating the felt felt has a problem that workability is poor and time and labor are required. In addition, since the position of the contact portion between the lubricating oil supply device and the rail is generally precisely adjusted at the time of shipment from the manufacturer, the lubricating oil supply device itself is detached from the rail and replaced with a new one. That is not recommended.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a linear motion device, an oil supply device, and an electronic component mounting device that are excellent in lubricating oil replenishment.

The linear motion device according to claim 1 has a rail having a rolling surface extending in one direction, a rolling surface facing the rolling surface, and interposed between the facing rolling surfaces. A movable body movable in the one direction by rolling of the rolling element; and an oil supply device that moves integrally with the movable body and supplies lubricating oil to a rolling surface of the rail, the oil supply device comprising: A lubricating oil supply body that supplies lubricating oil to the rolling surface of the rail, and a lubricating oil supply body that is detachably provided on the lubricating oil supply body and replenishes the lubricating oil supply body when mounted The lubricating oil supply body is moved in the extending direction of the rail so as to be attached to and detached from the lubricating oil supply body, and the lubricating oil supply body has a contact portion that contacts a rolling surface of the rail. The lubricating oil supply body has a small amount of the lubricating oil supply body when mounted. The lubricating oil supply body is infiltrated and replenished with the lubricating oil impregnated in the lubricating oil supply body, and the porous member of the lubricating oil supply body is The porous member of the lubricating oil replenishing body is housed in the second housing opened downward, and the porous member of the lubricating oil replenishing body is housed. A second casing is detachably mounted above the first casing in which the porous member of the lubricating oil supply body is stored .

The linear motion device according to claim 2 is the linear motion device according to claim 1 , wherein a concave groove is formed in a side portion of the first casing and a side portion of the second casing is formed. By forming a convex piece and engaging the concave groove with the convex piece, the second casing is detachably mounted above the first casing.

According to a third aspect of the present invention, there is provided a fueling device having a rolling surface facing a rolling surface extended in one direction on a rail, and the rolling element interposed between the facing rolling surfaces causes the first rolling device to roll. An oil supply device that moves integrally with a movable body movable in a direction and supplies lubricating oil to a rolling surface of the rail, and a lubricating oil supply body that supplies lubricating oil to the rolling surface of the rail; The lubricating oil supply body includes a lubricating oil supply body that is detachably provided and replenishes the lubricating oil supply body with the lubricating oil supply body when mounted, and the lubricating oil supply body moves in the extending direction of the rail to move the lubricating oil. The lubricating oil supply body is configured by a porous member having a contact portion that contacts the rolling surface of the rail, and the lubricating oil supply body is attached to the lubricating oil supply body when mounted. The porous member is in contact with at least a part of Lubricating oil impregnated in the replenishing body penetrates into the lubricating oil supply body and is replenished, and the porous member of the lubricating oil supply body is housed in a first housing opened upward, and the lubricating oil replenishment The porous member of the body is housed in a second housing that opens downward, and the second housing of the lubricating oil supply body that houses the porous member is the porous material of the lubricating oil supply body. A member is detachably mounted above the first housing in which the member is stored .

The oil supply device according to claim 4 is the oil supply device according to claim 3 , wherein a concave groove is formed in a side portion of the first casing and a convex piece is formed in a side portion of the second casing. And the second casing is detachably mounted above the first casing by engaging the concave groove with the convex piece.

Electronic component mounting apparatus of claim 5, the work surface, and a linear motion device according to claim 1 or 2, mounted in the working surface parallel to movable movable body mounting An electronic component is mounted on the substrate on the work surface by the head.

  According to the present invention, the oil supply device is configured to be detachable from the lubricating oil supply body that supplies the lubricating oil to the rolling surface of the rail and the lubricating oil supply body that supplies the lubricating oil to the lubricating oil supply body. As a result, it is possible to easily and quickly replenish the lubricated oil supply body in a wet state, greatly reducing the time required to pause the linear motion device during replenishment and improving mounting efficiency. Can be achieved.

  Embodiments of the present invention will be described with reference to the drawings. 1 is a perspective view of an electronic component mounting apparatus according to the present embodiment, FIGS. 2 and 3 are perspective views of the linear motion apparatus according to the present embodiment, and FIG. 4 is a cross-sectional view of the linear motion apparatus according to the present embodiment. 5 is a cross-sectional view of the fueling device of the present embodiment, and FIG. 6 is an exploded perspective view of the fueling device of the present embodiment.

  In FIG. 1, an electronic component mounting apparatus 1 is configured by arranging a substrate transfer device 3, an electronic component supply device 4, an orthogonal robot 5, and a mounting head 6 on a base 2. The upper surface of the base 2 is a work surface 2a that forms a horizontal plane, and an electronic component mounting operation is performed on the work surface 2a. The board transport device 3 has a function of transporting the board 7 in the X direction and a function of holding the board 7 at a predetermined position on the work surface 2a. The board 7 before mounting is carried into the electronic component mounting apparatus 1 and is being mounted. Maintains the state held at a predetermined position, and after the mounting, the holding of the substrate 7 is released and the electronic component mounting apparatus 1 is carried out. In the following description, the transport direction of the substrate 7 is the X direction, and the direction orthogonal to this in the horizontal plane is the Y direction. A plurality of electronic component supply devices 4 are arranged on both sides of the substrate transfer device 3 and have a function of supplying the electronic components housed inside to the outside. The orthogonal robot 5 has a function of horizontally moving the mounting head 6 in the X direction and the Y direction and positioning the mounting head 6 at an arbitrary position above the work surface 2a. The mounting head 6 moves between the electronic component supply device 4 and the substrate 7 and mounts the electronic component adsorbed by the nozzle 8 on the substrate 7.

The orthogonal robot 5 is provided with a linear guide 10 for moving the mounting head 6 in the X and Y directions in parallel with the work surface 2a. In FIG. 2, the linear guide 10 is a linear motion device that includes a linear rail 11 and a linear block 12 that can slide along the linear rail 11. The linear block 12 incorporates four sets of ball rows including a plurality of balls 13 and a ball retainer 14. On both side portions of the linear rail 11, a total of four ball rolling surfaces 11a corresponding to the four sets of ball rows incorporated in the linear block 12 are formed by extending in one direction.

  The linear block 12 has a mounting surface 12d for mounting a moving object. In FIG. 3, a pair of linear rails 11 are arranged in parallel, and the four corners of the moving object O are mounted on mounting surfaces 12 d of a total of four linear blocks 12 provided on each of the linear rails 11. The moving object O moves linearly with the movement of the four linear blocks 12 that slide along the pair of linear rails 11. In the orthogonal robot 5 shown in FIG. 1, the mounting head 6 is mounted on four linear blocks (not shown) of the linear guide 10 provided on the X robot 5x, and the four linear guides 10 provided on the Y robot 5y. One end of the X robot 5x is attached to a linear block (not shown). Accordingly, as the four linear blocks 12 sliding along the respective linear rails 11 move, the mounting head 6 can move horizontally in parallel to the work surface 2a.

  In FIG. 4, the linear block 12 is formed with ball rolling surfaces 12 a that face each ball rolling surface 11 a formed on the linear rail 11, and the linear block 12 includes these opposing ball rolling surfaces. A plurality of balls 13 interposed between 11a and 12a move linearly along the linear rail 11 by rolling. Inside the linear block 12, ball paths 12b communicating with the respective ball rolling surfaces 12a are formed. The ball passage 12b forms a circulation path for circulating a plurality of balls 13 that roll between the opposing ball rolling surfaces 11a and 12a, with the ball rolling surface 12a as a part thereof. In FIG. 2, end plates 15 are provided at both ends in one direction of the linear block 12 to form a part of a circulation path that connects the ball rolling surface 12a and the ball passage 12b. The linear block 12 and end plates 15 provided at both ends thereof constitute a movable body that is movable in the extending direction of each ball rolling surface 11 a formed on the linear rail 11.

In FIG. 2, the oil supply device 20 has a function of supplying lubricating oil to the four ball rolling surfaces 11 a formed on the linear rail 11, and is linearly integrated with the linear guide 12 by being attached to the end plate 15. Is configured to move. In FIG. 5, the oil supply device 20 is provided with a lubricating oil supply body 21 that supplies lubricating oil to the ball rolling surface 11 a of the linear rail 11, and a lubricating oil supply body 21 that is detachable. And a lubricating oil supply body 22 for supplying lubricating oil. Lubricating oil supply member 21 includes a first housing 23 which is open upwardly, housed in a housing 23, a porous having four contact portions 24a for respectively contacting Article 4 of the ball rolling surface 11a of the linear rail 11 And a material member 24. The lubricating oil supply body 22 includes a second housing 25 that opens downward, and a porous member 26 that is housed in the housing 25 and contacts the upper portion of the porous member 24 of the lubricating oil supply body 21 when mounted. Has been.

  As the porous members 24 and 26, for example, innumerable fibers such as felt are mixed at random and formed into a predetermined shape, and the gaps are impregnated with lubricating oil. Since the four contact portions 24a of the porous member 24 are in contact with the four ball rolling surfaces 11a, respectively, when the linear block 12 moves linearly along the linear rail 11, each contact portion 24a is in contact with the ball rolling surface. The sliding surface 11a is slid and lubricating oil is applied to all of the four ball rolling surfaces 11a. When the supply device 20 is attached to each of both end plates 15 provided before and after the linear guide 10, the ball 13 rolls immediately after the lubricant is applied regardless of the linear block 12 moving in any direction. Since the surface 11a rolls, effective refueling is possible, and smooth linear movement of the linear block 12 can be realized.

Since the lubricating oil is consumed as the application time elapses, the total amount of the lubricating oil impregnated in the porous member 24 gradually decreases. However, the lubricating oil impregnated in the porous member 26 that contacts the upper portion of the porous member 24 is reduced in gravity. Infiltration into the porous member 24 side by the action of the surface tension and replenishment of lubricating oil is performed. Since the lubricating oil replenishing body 22 that houses the replenishing porous member 26 is detachable above the lubricating oil supplying body 21, the lubricating oil can be directly replenished to the porous member 26 in the detached state. it can. Accordingly, before the lubricant impregnated in the porous member 24 is completely consumed, preferably the lubricant oil replenishment body 22 at a stage before and after the lubricant impregnated in the porous member 26 permeates the porous member 24 side. The lubricant is applied to the four ball rolling surfaces 11a without interruption by performing the operation of replenishing and replenishing the porous member 26 with the lubricant as needed. It is also possible to replenish the lubricating oil by preparing a plurality of lubricating oil replenishers 22 in advance and replacing them appropriately.

In FIG. 6, the mounting of the lubricating oil supply body 21 and the lubricating oil supply body 22 is formed on the concave groove 23 a formed on the side portion of the first housing 23 and the side portion of the second housing 25. This is done by engaging the protruding piece 25a. Since the groove 23a is formed along the extending direction of the linear rail 11, the lubricating oil supply body 22 is moved in the extending direction of the linear rail 11 to be attached to and detached from the lubricating oil supply body 21 (attachment / detaching direction). A). By detachably this way, the lubricating oil supply member 22 in a state moved the object O to the mounting surface 12 d (the one end of the mounting head 6 and X robot 5x in Fig. 1) is mounted for linear block 12 Detachable. Further, the lubricating oil supply body 22 can be attached and detached by adjusting the size of the lubricating oil supply body 22 so that a clearance is formed between the upper surface of the lubricating oil supply body 22 and the mounting surface 12 d of the linear block 12. It becomes easy.

  As described above, according to the oil supply device 20 of the present embodiment, the linear motion device including the oil supply device 20, and the electronic component mounting apparatus 1, it is possible to easily and quickly replenish the lubricating oil. The time for which the linear motion device is temporarily stopped at the time of replenishment can be greatly shortened, and the mounting efficiency can be improved.

  According to the present invention, the oil supply device is configured to be detachable from the lubricating oil supply body that supplies the lubricating oil to the rolling surface of the rail and the lubricating oil supply body that supplies the lubricating oil to the lubricating oil supply body. As a result, it is possible to easily and quickly replenish the lubricated oil supply body in a wet state, greatly reducing the time required to pause the linear motion device during replenishment and improving mounting efficiency. It is particularly useful in the field of electronic component mounting.

The perspective view of the electronic component mounting apparatus of this Embodiment The perspective view of the linear motion apparatus of this Embodiment The perspective view of the linear motion apparatus of this Embodiment Sectional view of the linear motion device of the present embodiment Sectional view of the fueling device of the present embodiment Exploded perspective view of a fueling device of the present embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electronic component mounting apparatus 2a Work surface 6 Mounting head 7 Board | substrate 10 Linear guide 11 Linear rail 11a Ball rolling surface 12 Linear block 12a Ball rolling surface 13 Ball 20 Oil supply device 21 Lubricating oil supply body 22 Lubricating oil supply body 23, 25 Case 24, 26 Porous member 24a Contact part

Claims (5)

A rail having a rolling surface extending in one direction, a rolling surface facing the rolling surface, and rolling in a rolling direction interposed between the facing rolling surfaces in the one direction. A movable body that is movable, and an oil supply device that moves integrally with the movable body and supplies lubricating oil to a rolling surface of the rail,
Lubricating oil that the lubricating device is provided detachably to the lubricating oil supply body, and that supplies the lubricating oil to the lubricating oil supply body when mounted. The lubricating oil supply body is moved in the extending direction of the rail to be attached to and detached from the lubricating oil supply body ,
The lubricating oil supply body is composed of a porous member having a contact portion that comes into contact with the rolling surface of the rail, and the lubricating oil supply body is in contact with at least a part of the lubricating oil supply body when mounted. The lubricating oil composed of members and impregnated in the lubricating oil supply body penetrates into the lubricating oil supply body and is replenished,
The porous member of the lubricating oil supply body is housed in a first housing that opens upward, and the porous member of the lubricating oil supply body is housed in a second housing that opens downward, A linear motion in which the second casing in which the porous member of the lubricating oil supply body is accommodated is detachably mounted above the first casing in which the porous member of the lubricating oil supply body is accommodated. apparatus. A concave groove is formed on a side portion of the first casing, a convex piece is formed on a side portion of the second casing, and the concave groove and the convex piece are engaged with each other to form the second The linear motion device according to claim 1 , wherein a casing is detachably mounted above the first casing. A rail having a rolling surface facing the rolling surface extended in one direction on the rail, and integrated with the movable body movable in the one direction by rolling of the rolling body interposed between the facing rolling surfaces And a lubricating oil supply body for supplying lubricating oil to the rolling surface of the rail, and a detachable attachment to the lubricating oil supply body Provided with a lubricating oil replenishing body that replenishes the lubricating oil supply body when mounted, and the lubricating oil replenishment body is moved in the extending direction of the rail to be attached to and detached from the lubricating oil supply body ,
The lubricating oil supply body is composed of a porous member having a contact portion that comes into contact with the rolling surface of the rail, and the lubricating oil supply body is in contact with at least a part of the lubricating oil supply body when mounted. The lubricating oil composed of members and impregnated in the lubricating oil supply body penetrates into the lubricating oil supply body and is replenished,
The porous member of the lubricating oil supply body is housed in a first housing that opens upward, and the porous member of the lubricating oil supply body is housed in a second housing that opens downward, An oil supply device in which a second housing in which the porous member of the lubricating oil supply body is housed is detachably mounted above the first housing in which the porous member of the lubricating oil supply body is housed. . A concave groove is formed on a side portion of the first casing, a convex piece is formed on a side portion of the second casing, and the concave groove and the convex piece are engaged with each other to form the second The oil supply device according to claim 3 , wherein a housing is detachably mounted above the first housing. And work surface, and a linear motion device according to claim 1 or 2, the electronic component to the substrate at the work surface by the mounted mounting head parallel to movable the moving body and the working surface Electronic component mounting device for mounting.

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