JPH0233602B2 - 2HOKOROORASOCHINOSEIZOHOHO - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a method for manufacturing a two-way roller device that can move an article in any direction on a plane, and specifically relates to a method for manufacturing a two-way roller device that can be mounted on a shaft and moved onto the shaft. A method for manufacturing a two-way roller device comprising a support body that rotates in a vertical plane and a plurality of barrel-shaped rollers that are rotatably supported on the outer periphery of the support body and rotate in a plane parallel to a shaft. It is something.

(Prior Art) The applicant has previously proposed two
proposed a directional roller device 2 (U.S. Patent No.
No. 3961694).

The roller device 2 includes a plurality of barrel-shaped rollers 6 rotatably mounted on the outer periphery of a support 3, and a plurality of roller devices 2 are mounted on each of a plurality of shafts 1 arranged at a constant pitch. This forms a conveyance surface on which the articles are placed.

A driven gear 91 that meshes with the driving gear 9 is fixed to the other end of the shaft 1.

The support body 3 has a cylindrical boss 33 which is to be fitted into the shaft 1 so as to be integrally rotatable as shown in FIG.
, a plurality of ribs 34 protruding in the radial direction from the boss 33 , a plurality of support arms 32 that protrude into two branches from the tip of each rib 34 and support each roller 6 freely in rotation, and the boss 33 . and each rib 3
4 and a flange 35 that connects the end faces of 4. Roller shafts 61, 61 protruding from both ends of the barrel-shaped roller 6 are fitted into through-holes 31 formed at the tips of a pair of parallel arms 32, 32, and the roller 6 is rotatably supported between the arms.

The articles placed on the conveying surface are not only moved in the direction of the shaft row by the rotation of the shaft 1, but also can be moved in the axial direction of the shaft 1 by the free rotation of the rollers 6.

Conventionally, the roller device 2 has been manufactured by integrally forming the support 3 by casting, separately manufacturing a predetermined number of rollers 6 by machining, and then assembling them.

The reason why the support body 3 is manufactured by casting is as follows.
This is because the shape of the support body 3 is complex, and casting is suitable for mass production.

(Problem to be Solved) However, in the conventional roller device 2 in which the support body 3 is manufactured by casting, the material of the support body 3 must be a brittle and low elastic material such as cast iron or aluminum alloy. Therefore, when placing an article on the conveyance surface, if the article is not supported with elasticity and the article applies an impact to the roller 6 or the support 3, the support 3
However, there was a problem that cracks were likely to occur in various places, and the life of the roller device 2 was short.

In particular, since the tip of the support arm 32 of the roller device cannot protrude outside the circular locus on which the barrel roller 6 revolves, there are restrictions on its shape, and there is a need for a penetrating part to support the barrel roller 6. Since the hole 31 is formed at the tip of the arm, the strength is reduced both in terms of material and structure. Therefore, when an article collides directly with the end of the arm 32, damage often occurs in which the periphery of the through hole 31 that pivotally supports the roller is chipped.

Further, manufacturing the support body 3 by casting requires a large number of man-hours, and there is a problem that the roller device 2 becomes expensive. If the support could be manufactured by pressing steel with high toughness, the life of the roller device could be extended, but since the support has a complicated structure as shown in Figure 10, it would be possible to manufacture the support by pressing steel. It was considered impossible to manufacture.

(Means for Solving the Problems) The present invention makes it possible to manufacture the support body of the two-way roller device by press working a steel plate, and the ribs can be made by doubling the steel plate to increase the strength. It is an object of the present invention to provide a method for manufacturing a two-way roller device that can perform the following steps.

The manufacturing method according to the present invention includes the steps of manufacturing the barrel-shaped roller 6, manufacturing the pipe piece 5 that becomes the cylindrical boss, and processing a steel plate to attach wing portions 4 to both sides of the main plate portion 47.
8 and 48, and then pressing the blank 40 to form a boss portion 43 having an arcuate surface to be joined to the peripheral wall of the pipe piece 5, and both ends of the boss portion 43. A pair of rib portions 44, 44 extending in the radial direction of the pipe piece 5 from
A pair of arms 42, 42 extend from the tips of the rib portions 44, 44 in a direction substantially perpendicular to the rotation axis of the roller 6, respectively, and support each roller 6 in a freely rotatable manner.
a step of manufacturing a support piece 4 comprising: a plurality of rollers 6 manufactured through each of the above steps;
It consists of a step of assembling one pipe piece 5 and a plurality of support pieces 4 of the same number as rollers 6.

In the assembly process, a plurality of support pieces 4 are arranged around the pipe piece 5, the boss part 43 is brought into contact with the peripheral wall of the pipe piece 5, and the rib part 44 is overlapped with the rib part 44 of the adjacent support piece 4. This is done by fixing the pipe piece 5, the boss portion 43, and the overlapping rib portions 44, 44 to each other by welding, and then rotatably equipping the roller 6 between the arms 42, 42 of each support piece 4.

In addition, the timing of installing the rollers in the assembly process is changed, and after the rollers 6 are rotatably installed between the arms 42 and 42 of each support piece 4 in advance, a plurality of support pieces 4 are installed around the pipe piece 5. This can also be done by arranging the pipe pieces 5, the boss portion 43, and the overlapping rib portions 44, 44 to each other by welding.

(Function) In the manufacturing process of the support piece 4, by press working the blank 40, the main plate portion 47 of the blank 40 becomes the boss portion 43, and both wing portions 48, 48
The inner portions 48a, 48a are the pair of rib portions 44,
44, and the outer portions 48b, 48b become a pair of arms 42, 42, and the support piece 4 is formed.

In the assembly process, by arranging a predetermined number of support pieces 4 around the pipe piece 5, each support piece 4 has a concave surface of its respective boss portion 43 in close contact with the outer peripheral surface of the pipe piece 5, and a rib The portions 44, 44 overlap the rib portion 44 of the adjacent support piece 4.

By welding and fixing the pipe piece 5, the boss portion 43, and the overlapping rib portions 44, 44 to each other, as shown in FIGS. 3 and 4, the structure is approximately the same as that of the conventional support (FIG. 10). The support body 3 is completed. That is, the boss portion 4 of the pipe piece 5 and each support piece 4
Reference numeral 3 denotes a pair of rib portions 4 that constitute a conventional boss 33 and are formed by two steel plates that are joined to each other.
4 and 44 are the conventional ribs 34, and the arms 42 and 42 of each support piece 4 are the conventional arms 32 and 32.
corresponds to

On the other hand, the roller 6 can be manufactured by a known method such as machining of a bar material, casting, or drawing of a steel pipe.

The roller device 2 is completed by rotatably equipping the roller 6 between each arm of the support piece 4.

Alternatively, prior to the step of fixing the support piece 4 to the pipe piece 5, each support piece 4 is equipped with a roller 6 in advance, and then each support piece 4 is welded and fixed to the pipe piece 5. The two-way roller device 2 is completed.

(Effects of the Invention) According to the method for manufacturing a two-way roller device according to the present invention, the support body 3 is
The supporting piece 4 constituting the can be efficiently manufactured with a small number of man-hours, and the assembly process can be carried out reliably and easily by welding, resulting in higher productivity than conventional manufacturing methods including the casting process. is extremely good, making it possible to significantly reduce manufacturing costs.

However, since the support body 3 is manufactured from a strong steel plate and has sufficient impact strength, and has appropriate elasticity as a whole, the support body 3 is easily affected by the loading, transporting, etc. of articles. The impact force is absorbed and alleviated mainly by slight elastic deformation of the rib portion 44 and the arm 42. Therefore, damage such as cracks does not occur to the support body 3 during use of the roller device 2, and the life of the roller device 2 is longer than that of the conventional roller device.

(Example) FIGS. 1 to 4 show an example of the method for manufacturing a two-way roller device according to the present invention, and FIG. 5 shows a state in which the completed roller device 2 is installed on the shaft 1. .

Hereinafter, a method for manufacturing the roller device 2 according to the present invention will be explained with reference to the drawings.

Roller manufacturing process The roller 6 is formed into a hollow barrel shape as shown in FIG. 1 by drawing a steel pipe, and a roller shaft 61 is freely rotatably passed through the center thereof.

It goes without saying that the roller 6 can be manufactured by cutting a bar material or by casting, as in the conventional method.

Pipe Piece Manufacturing Process The pipe piece 5 is produced by fixing a pair of ring-shaped bearing pieces 7, 7, if necessary, to the inner peripheral surface of both ends of a steel pipe cut to a predetermined length. The bearing piece 7 contains a lubricant, thereby allowing smooth rotation with respect to the shaft 1. Since the length of the steel pipe determines the thickness of the roller device, it is desirable to cut it accurately.

Support piece manufacturing process A steel plate is punched out using a press mechanism, as shown in Figure 2a.
As shown in the figure, a substantially rectangular main plate part 47 with a convex part 47a at the upper end, a pair of wing parts 48, 48 extending outward from both sides of the main plate part 47, the main plate part 47 and both wing parts 48, 48. A strip portion 49 extending across the end of the
A blank 40 is formed. Both wings 4
Holes 41 are formed at the ends of the holes 8 and 48, respectively, at the same time as punching or by drilling after punching.

By press working the blank 40, a boss portion 4 having an arcuate surface as shown in FIG. 2b is formed.
3, a pair of rib portions 44, 44 extending from both ends of the boss portion 43 in the radial direction of the boss portion 43, and a pair of rib portions 44, 44 extending from the tips of both rib portions 44, 44 in a direction perpendicular to the roller rotation axis, respectively. Arms 42, 42
A support piece 4 having a boss portion 43, both rib portions 44, 44, and a flange 45 bent and extending at right angles from the end sides of both arms 42, 42 is manufactured. still,
The angle formed by both rib portions 44, 44 is set to 120 degrees.

The support piece 4 manufactured in this manner has sufficient structural strength and toughness due to the shape of the flange 45, and also has appropriate elasticity.

Assembly process As shown in FIG. 3, three support pieces 4 are arranged around the pipe piece 5, and the respective boss portions 43 are joined to the peripheral wall of the pipe piece 5. At this time, as shown in FIG. 5, the protruding pieces 46 of each supporting piece 4 are made to protrude a predetermined length from the end surface of the pipe piece 5. Rib portion 44 of support piece 4,
44 overlaps with the rib portion 44 of the adjacent support piece 4 to form a double steel plate.

Welding 8 is performed between the joints between the pipe pieces 5 and each boss portion 43 and between each rib portion 44 to integrally fix the support pieces 4 to each other and the pipe piece 5 and each support piece 4 to each other.

Thereafter, as shown in FIG. 4, both ends of the roller shaft 61 of the roller 6 are fitted into the holes 41, 41 of the arms 42, 42 of each support piece 4, and a retainer 61a is applied to the tip by caulking or the like. Complete device 2.

A pair of roller devices 2, 2 are connected by engaging each other's protrusions 46, 46, as shown in FIG. 5, and fitted onto the shaft 1. As a result, both roller devices 2,
2 can rotate integrally, and the relative positions of the rollers 6 are always maintained at a phase difference of 60 degrees.

In addition, in the assembly process, the roller 6 device is attached to the support piece 4 before welding and fixing, as shown in FIG.
It is also possible to complete the roller device 2 by equipping the roller 6 in advance and then welding and fixing it to the pipe piece 5 as shown in FIG.

In addition, the blank 40 before pressing is shown in Fig. 2a.
By not forming the strip plate portion 49 shown in FIG. 7, but by providing the convex portions 47a vertically symmetrically and then performing the same press working and assembly process, a plurality of protrusions are formed on both ends of the support body 3 as shown in FIG. It is possible to manufacture a roller device 2 with a protrusion 46 of. These make it possible to connect all the roller devices 2 installed on one shaft 1 so that they can rotate integrally with each other. At this time, the interval between each roller device 2 is
The end surfaces of the respective pipe pieces 5 abut each other,
A predetermined pitch that corresponds to the length of the pipe piece 5 is set.

Furthermore, the pipe piece 5 is not equipped with the bearing piece 7, and as shown in FIG. 8, by alternately forming an engaging part 50 and a circular arc surface 51 that can be engaged with a hexagonal shaft, the round shaft can be freely rotated. It is also possible to rotate each roller device 2 by fitting it into a shaft having a hexagonal cross section as shown in FIG.

Note that the configuration of each part of the present invention is not limited to the above embodiments,
Various modifications are possible within the technical scope of the claims.

For example, it goes without saying that the number of rollers 6 and support pieces 4 that the roller device 2 should be equipped with is not limited to three, but can be greater than three.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway exploded slope view of a roller device according to the method of manufacturing a two-way roller device according to the present invention, FIG. 2a is a front view of a blank, FIG. 2b is a plan view of a support piece, and FIG. The figure shows the rear view of the support after the welding process.
Figure 4 is a front view of the roller device after the assembly process is completed;
FIG. 5 is a side view of the roller device, FIG. 6 is a front view of the support piece and roller showing another embodiment, FIG. 7 is a side view of the support body showing still another embodiment, and FIG. 8 is a further FIG. 9 is a side view of a conventional two-way roller device installed on a shaft, and FIG. 10 is an exploded perspective view of the roller device according to another embodiment. DESCRIPTION OF SYMBOLS 1... Shaft, 2... Roller device, 3... Support body, 4... Support piece, 40... Blank, 42...
...Arm, 43...Boss part, 44...Rib part, 4
7... Main plate part, 48... Wing part, 6... Roller, 6
1...Roller shaft.

Claims (1)

[Claims] 1. In a method for manufacturing a two-way roller device in which a plurality of barrel-shaped rollers 6 are rotatably supported on the outer periphery of a support 3 in a direction orthogonal to the rotation of the support, the barrel-shaped A step of manufacturing the roller 6, a step of manufacturing the pipe piece 5 that becomes the cylindrical boss, and a step of processing the steel plate to form the wing portions 4 on both sides of the main plate portion 47.
8, 48, and then press the blank 40 to form a boss portion 43 having an arcuate surface to be joined to the circumferential wall of the pipe piece 5, and both ends of the boss portion 43. A pair of rib portions 44, 44 extending in the radial direction of the pipe piece 5 from
A pair of arms 42, 42 extend from the tips of the rib portions 44, 44 in a direction substantially perpendicular to the rotation axis of the roller 6, respectively, and support each roller 6 in a freely rotatable manner.
a step of manufacturing a support piece 4 comprising: a plurality of rollers 6 manufactured through each of the above steps;
It consists of a step of assembling one pipe piece 5 and a plurality of support pieces 4 of the same number as rollers 6, and this assembling process involves arranging a plurality of support pieces 4 around the pipe piece 5 and assembling the pipe piece of the boss portion 43. 5, and the rib portion 44 of the adjacent support piece 4 is stacked on the peripheral wall of the adjacent support piece 4.
After the pipe piece 5, each support piece 4, and the overlapping rib parts 44, 44 are fixed to each other by welding, a roller 6 is rotatably installed between the arms 42, 42 of each support piece 4. A method for manufacturing a two-way roller device, characterized in that the method is carried out by: 2. The method for manufacturing a two-way roller device according to claim 1, wherein the barrel-shaped roller 6 is manufactured by drawing a steel pipe. 3. The pipe piece 5 has a pair of ring-shaped bearing pieces 7, 7 fixed to the inner circumferential surface of both ends of a steel pipe cut to a predetermined length. A method for manufacturing a roller device. 4 The pipe piece 5 has an engaging portion 50 on the inner circumferential surface of a steel pipe cut to a predetermined length, into which the arcuate surface and hexagonal shaft can fit.
A method of manufacturing a two-way roller device according to claim 1 or 2, wherein the two-way roller device is formed alternately. 5 In the manufacturing process of the support piece 4, the blank 40 has a protruding piece 46 on both or one of the upper end and the lower end of the main plate part 47 that should protrude from the end surface of the pipe piece 5 after the assembly process. A method of manufacturing a two-way roller device according to any one of claims 1 to 4, wherein the convex portion 47a is integrally formed. 6 In the manufacturing process of the support piece 4, a band plate part 49 extending across the main plate part 47 and both wing parts 48, 48 is integrally formed at the end of the blank 40, and the band plate part 49 is press-worked. By applying this, the boss portion 4
3. Both rib parts 44, 44 and both arms 42, 42
The method for manufacturing a two-way roller device according to any one of claims 1 to 5, wherein a flange 45 connecting the end sides of the flange 45 is formed. 7. A step of manufacturing barrel-shaped rollers 6 in a method for manufacturing a two-way roller device in which a plurality of barrel-shaped rollers 6 are rotatably supported on the outer periphery of the support 3 in a direction orthogonal to the rotation of the support. , a step of manufacturing a pipe piece 5 that becomes a cylindrical boss, and a step of processing a steel plate to form wing portions 4 on both sides of the main plate portion 47 .
8, 48, and then press the blank 40 to form a boss portion 43 having an arcuate surface to be joined to the circumferential wall of the pipe piece 5, and both ends of the boss portion 43. A pair of rib portions 44, 44 extending in the radial direction of the pipe piece 5 from
A pair of arms 42, 42 extend from the tips of the rib portions 44, 44 in a direction substantially perpendicular to the rotation axis of the roller 6, respectively, and support each roller 6 in a freely rotatable manner.
a step of manufacturing a support piece 4 comprising: a plurality of rollers 6 manufactured through each of the above steps;
It consists of a step of assembling a plurality of support pieces 4 of the same number as one pipe piece 5 and rollers 6, and this assembling process includes the arms 42, 42 of each support piece 4.
After installing a roller 6 to freely rotate between them, a plurality of supporting pieces 4 are arranged around the pipe piece 5 and the boss part 43
The pipe piece 5 and each support piece 4 and the overlapping rib parts 44, 44 are welded and fixed to each other by stacking the rib part 44 on the circumferential wall of the pipe piece 5 and the rib part 44 of the adjacent support piece 4. A method for manufacturing a two-way roller device, characterized in that the method is carried out by: 8. The method for manufacturing a two-way roller device according to claim 7, wherein the barrel-shaped roller 6 is manufactured by drawing a steel pipe. 9. The pipe piece 5 has a pair of ring-shaped bearing pieces 7, 7 fixed to the inner peripheral surface of a steel pipe cut to a predetermined length.
A method of manufacturing a directional roller device. 10 The pipe piece 5 has an engaging portion 5 in which the arcuate surface and hexagonal shaft can fit into the inner circumferential surface of a steel pipe cut to a predetermined length.
8. The method of manufacturing a two-way roller device according to claim 7 or 8, wherein the rollers are formed alternately with 0 and 0. 11 In the manufacturing process of the support piece 4, the blank 40 is provided with a protruding piece 46 that protrudes from the end face of the pipe piece 5 after the assembly process on both or one of the upper and lower ends of the main plate part 47. A method of manufacturing a two-way roller device according to any one of claims 7 to 10, wherein the convex portion 47a is integrally formed. 12 In the manufacturing process of the support piece 4, a band plate part 49 extending across the main plate part 47 and both wing parts 48, 48 is integrally formed at the end of the blank 40, and the band plate part 49 is press-worked. By applying this, the boss portion 4
3. Both rib parts 44, 44 and both arms 42, 42
2, wherein a flange 45 is formed to connect the end sides of the
A method of manufacturing a directional roller device.