JPH0340808Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a roller support frame for a roller table that conveys articles by utilizing the rolling motion of rollers.

(Prior Art) Conventionally, there is a roller table in which a plurality of rollers are rotatably supported at equal intervals in the longitudinal direction of a support frame having a so-called U-shaped cross section. The rollers are arranged in parallel and inclined in one direction, and the articles are placed on the upper rollers, and the rolling of each roller is used to convey the articles downward.

Various types of roller support frames for this type of roller table have been put into practical use due to their different cross-sectional shapes. For example, as shown in FIGS. It is of the type used as an upward opening (see Utility Model Application Publication No. 140014/1983).

First, in FIGS. 6 and 7, 35 is a roller support frame, which is formed by bending a flat metal plate into the cross-sectional shape shown in FIG.

That is, in a cross-sectional view, the support frame 35 includes a flat bottom plate 36, side plates 37, 37 standing up from both left and right ends thereof, and an upper wall 38 connected to their upper ends and facing outward in the horizontal direction. ,38 and
Furthermore, a hanging wall (outer wall) 3 that hangs down from those outer ends
It consists of 9, 39.

Reference numeral 40 denotes insertion grooves, which are formed by cutting in the shape of a long hole from the side plate 37 to the upper wall 38, and are formed at predetermined intervals in the longitudinal direction of the support frame 35 and between the left and right grooves 4.
0,40 comrades are provided so as to face each other.

Reference numeral 41 denotes a roller, which is integrally provided with a support pin 42 projecting along its center line. As shown in FIG. 6, this roller 41 is pushed in from above so that the support hinge 42 fits into the insertion groove 40, and finally, as shown in FIG. be supported.

43 is a retaining piece, and the upper wall 39 of each insertion groove 40
The rollers 41 are integrally formed in pairs so as to face inward of the insertion grooves 40 at each section, and after the rollers 41 are pushed into the insertion grooves 40, the support pins 42 of the rollers 41 are removed from the insertion grooves 40. This is to prevent it from falling off.

Next, unlike the support frame 35 described above, the one shown in FIGS. 8 and 9 has upper walls 38, 38 extending inwardly from the upper end of the side plate 37, and a wall hanging from the inner end. (Inner wall) This is an extension of 39, 39.

In addition, the structure of the roller 41 and the like and its insertion are substantially the same as those of the above-mentioned type.

(Problems to be Solved by the Invention) Among the conventional support frames 35 described above, the type shown in FIG. 7 has the following drawbacks.

That is, first of all, the upper wall 38 is formed to increase the longitudinal bending rigidity of the support frame 35.
A hanging wall 39 is formed in an outward spiral shape from the upper end of the side plate 37, and the roller 41 is connected to the support pin 4.
2 between the left and right side plates 37, 37. Therefore, in order to prevent the roller 41 from wobbling laterally or unexpectedly falling downward after installation, the width of the bottom plate 36 must be 41, and the width of the bottom plate 36 is restricted, resulting in an unstable structure that is likely to fall over in the width direction.

Furthermore, since the space S' created between the roller 41 and the side plate 37 is exclusively narrow, in this type, even if the side plate 37 is slightly deformed, such as by twisting or denting, the side plate 37 will not be able to move around the roller. There was a great possibility that the roller 41 would come into contact with the sides of the roller 41 and stop rotating.

Further, the lower end of the hanging wall 39 located outside the side plate 37 is a free end, and the end of the metal plate remains exposed, which is extremely dangerous during assembly and other handling.

On the other hand, in the type shown in FIG. 9, unlike the one in FIG. 7, the upper wall 38 and the hanging wall 39 are formed inwardly, so the above-mentioned disadvantages are avoided. There are drawbacks as shown.

That is, in the case of this type, the roller 41 is supported between the left and right hanging walls 39 and 39 in a so-called hanging manner.
When an excessive force is applied to the roller 1, there is a great risk that the lower end of the hanging wall 39 will deform in a direction away from the roller 41 and the roller 41 will fall off, as shown by the imaginary line in FIG. Further, in order to form an inwardly wound shape, processing is generally troublesome.

A common drawback of both types is that the lower ends of the hanging walls 39, 39 are free ends, and the frame structure of the cross section of the support frame 35 is an open structure. , 39, the support pins 42 of the rollers 41 are simply fitted loosely, so although they have some strength against vertical forces, they are weak against left and right forces (in the axial direction of the rollers). This is a very weak structure, and if an article to be conveyed is placed on the rollers 41 from diagonally above, the support frame 35 may be plastically deformed to fall sideways.

Further, the locking piece 43 adopted in both types is integrally provided in the insertion groove 40 and protrudes, and the locking piece 43 is integrally provided in the insertion groove 40.
The support pin 42 cannot be inserted unless the support pin 42 undergoes plastic deformation, and if the deformation is severe, there is a high possibility that the support pin 42 will unexpectedly fall off after insertion.

The present invention was developed in view of the above points, and provides a roller support frame for a roller table that basically adopts an externally wound type but is superior in terms of stability, strength, etc. The purpose is to

(Means for Solving the Problems) In order to achieve the above object, the technical means taken by the present invention consist of a bottom plate 5 and a pair of left and right side plates 4, 4 bent in an upright manner from both ends of the bottom plate 5 in the width direction. and an upper wall 6 extending outward in the width direction from the upper end of each side plate 4, 4.
a, 6a, and outer walls 7, 7 extending downward from the outer ends of the upper walls 6a, 6a, and insertion grooves 11 cut out from the upper wall 6a to the side plate 4 are provided at predetermined intervals in the longitudinal direction. In the roller support frame of the roller table, in which the support pin 9 for supporting the roller 3 is pivotally supported between the insertion grooves 11 and 11, the lower part of the side plate 4 is located below the insertion groove 11. The outer wall 7 is formed in an outwardly bulging shape through an inclined wall 4a that is inclined downwardly and outwardly, and the outer wall 7 extends below the support pin 9, is flush with the lower part of the side plate 4, and is flush with the support pin 9. It is arranged near the end of the support pin 9 to restrict lateral movement, and the outer wall 7 has a wall that elastically deforms outward when the support pin 9 is inserted, and that overlaps the end of the support pin 9 in the axial direction after insertion. A retaining piece 12 for preventing the support pin 9 from coming off is formed by cutting downward and inwardly from the outer wall 7 above the support pin 9, and a lower wall 7 extending inward in the width direction from the lower end of the outer wall 7.
a is formed so that its tip is located near the side plate 4, and has a substantially closed rectangular shape consisting of an inner wall 6, which is the side plate 4 above the inclined wall 4a, an upper wall 6a, an outer wall 7, and a lower wall 7a. This is because a rectangular frame portion F is formed.

(Function) In the present invention, the lower part of the side plate 4 is made to bulge outward by the inclined wall 4a provided below the insertion groove 11 and inclined downwardly and outwardly, and is basically the same as the conventional type shown in FIG. Similarly, although the roller support frame 2 is wound outwardly, the stability in the width direction of the roller support frame 2 itself is improved.

A downward force from the rectangular frame portion F or, in some cases, a force in the axial direction of the roller 3 will act on this inclined wall 4a, but the force will be applied to the inclined wall 4a, the inner walls 6 above and below it, and the lower part of the side plate 4. The S-shaped bent shape can support the force in any direction as a cushion, and plastic deformation of the side plate 4 due to excessive force is prevented as much as possible.

In addition, the outer wall 7 constituting the square frame part F is
It is arranged near the end of the support pin 9 so as to be flush with the lower part of the side plate 4 and to restrict lateral movement of the support pin 9, and when an excessive downward force is applied, the lining action of the support pin 9 is applied. This prevents deformation in which the side plates 4 approach each other, and when excessive force is applied in the axial direction of the roller 3, the force is transferred to the inclined wall 4a through the contact between the end of the support pin 9 and the outer wall 7. , thereby promoting the cushioning action of the inclined wall 4a described above.

Furthermore, the retaining piece 12 of the present invention is cut and raised on the outer wall 7 side, and is elastically deformed outward when the support pin 9 is inserted into the insertion groove 11, and after insertion, the retaining piece 12 is formed by cutting and raising the end of the support pin 9 and the shaft. The support pins 9 are engaged by overlapping in the direction to prevent the support pins 9 from coming off.

Further, in the present invention, a recess 8 is formed by the inclined wall 4a and the lower wall 7a of the square frame part F, and the recess 8 is continuously formed on the side surface of the roller support frame 2 along the longitudinal direction. be done.

(Example) Hereinafter, an example of the present invention will be described based on the drawings. In Figures 1 to 5, 1 is a roller table made by bending a metal plate such as a steel plate to have a U-shaped cross section. It is composed of a roller support frame 2 and a plurality of rollers 3 rotatably attached at equal intervals in the longitudinal direction of the support frame 2.

As shown in FIG. 1, the support frame 2 includes a flat bottom plate 5 constituting the lowermost surface, and a pair of opposing side plates 4, 4 bent vertically upward from both ends of the bottom plate 5 in the width direction. It is formed into a substantially U-shape in cross section.

The upper portions of the side plates 4, 4 are respectively bent outwardly to form a pair of left and right rectangular frame portions F, F.

The rectangular frame portion F literally has a substantially closed rectangular frame structure, and is composed of an inner wall 6 and an outer wall 7 in the vertical direction, and an upper wall 6a and a lower wall 7a in the horizontal direction.

Further, reference numerals 4a and 4a denote inclined walls, which are formed by bending the lower part of the square frame part F, that is, the substantially central part in the vertical direction of the side plates 4, 4 downward and outward. The upper end is integrally connected to the lower end of the inner wall 6 of the frame portion F. Therefore, the lower part of the side plate 4 is formed into an outwardly bulging shape by the inclined walls 4a, 4a.

In this embodiment, the outer wall 7 extends below the support pin 9, is flush with the lower part of the side plate 4 below the inclined wall 4a in the vertical direction, and prevents the support pin 9 from moving laterally. It is arranged near the end of the support pin 9 to regulate it. Also, the lower wall 7
The tip of a is extended toward the upper end of the inclined wall 4a, and a triangular recess 8 is formed in the side surface of the support frame 2 surrounded by these walls 4a and 7a. Therefore, this recessed portion 8 is
It is designed to extend along the longitudinal direction on the side surface of the

The roller 3 is molded from synthetic resin or the like,
A pin fitting hole 10 is formed in the center, into which a support pin 9 of a predetermined length is loosely fitted so as to be relatively rotatable.

A plurality of insertion grooves 11 into which both ends of the support pins 9 are inserted from above are formed in each inner wall 6 at equal intervals in the longitudinal direction of the support frame 2, and the left and right insertion grooves 11, 11 are formed at positions facing each other.

Each outer wall 7 is provided with a downwardly inclined retaining piece 12 cut and raised at a position corresponding to each insertion groove 11 so as to gradually approach the inner wall 6 and overlap the end of the support pin 9 in the axial direction. The retaining piece 12
The lower side is elastically swingable in the lateral direction.

As shown by the imaginary lines in FIG. 1, with the support pin 9 loosely fitted into the pin fitting hole 10 of the roller 3, both ends of the support pin 9 are inserted into the inner walls 6 on both sides from above the support frame 2. If you insert it into the insertion groove 11 of
The retaining pieces 12 on both sides are elastically deformed outward by the both ends of the support pin 9, and the support pin 9 is inserted into the insertion groove 1.
After the support pin 9 is inserted to the lower end, the retaining piece 12 returns inward to prevent the support pin 9 from coming off upward.

Further, in this embodiment, the lower side of the retaining piece 12 of the outer wall 7 is slightly cut and raised in the direction of the inner wall 6 to form a pin holding piece 12a.
2a comes into contact with both ends of the support pin 9 after insertion, and restricts movement of the pin 9 in the lateral direction.

Reference numeral 14 denotes an upper support member, which is formed by suitably bending a metal plate such as an iron plate, and as shown in FIG.
It consists of a side plate part 16, a top plate part 17, and a fitting plate part 18, and the fitting plate part 18 has, as shown in FIG.
A plurality of fitting notches 19 are formed at regular intervals in the longitudinal direction, into which the upper part of the side plate 4 of the support frame 2 is removably fitted. In addition, bolt insertion holes 20 and 21 are appropriately formed in the side plate portion 16 and the upper plate portion 17 for attachment to a fixed frame (not shown) or the like.

Reference numeral 23 denotes a lower support member, which is formed by suitably bending a metal plate such as an iron plate, and as shown in the second figure, the bottom plate portion 24
It consists of a side plate part 25 and an upper plate part 26, and the side plate part 2
5 has a stepped portion 27 formed in the middle, and as shown in FIG. A plurality of fitting notches 28 are formed into which the fitting notches 28 are fitted. Further, the cross section of the fitting notch 28 of the stepped portion 27 constitutes a stopper portion 29 against which the fitting end of the side plate 4 is movably abutted.

Further, bolt insertion holes 30 and 31 are appropriately formed in the side plate portion 25 and the upper plate portion 26 for attachment to a fixed frame (not shown) or the like.

As shown in FIGS. 2 to 5, the lower end of the support frame 2 of the roller table 1 is connected to a lower support member 23.
The support frame 2 is removably fitted into the pair of fitting notches 28 of
The upper end portion is removably fitted into a pair of fitting notches 19 of the upper receiving member 14, and the roller table 1 is mounted and supported in an inclined manner. Incidentally, a plurality of roller tables 1 are attached along the longitudinal direction of the upper receiving member 14.

Then, the roller 3 on the upper side of the roller table 1
It is possible to place the article 33 on top and convey the article 33 downward using the rolling motion of each roller 3.

The embodiment of the present invention is constructed as described above, and when each roller 3 is attached to the support frame 2,
It is sufficient to loosely fit the support pin 9 into the pin-fitting hole 10 of the roller 3 and push it into the insertion groove 11 of the inner wall 6 from above, making it easy to install the roller 3. In addition, the axial movement of the support pin 9 is regulated by a presser piece 12a provided on each outer wall 7, and the retaining piece 12 prevents the support pin 9 from coming off upward, so that the support pin 9 can be effectively prevented from falling off in either direction. can be prevented, therefore,
Careless falling off of the roller 3 can be prevented. moreover,
Since the support pin 9 and the roller 3 are relatively rotatable, relative rotation between the support pin 9 and the insertion groove 11 can be prevented, and abrasion of the support pin 9 and the insertion groove 11 portion of the support frame 2 can be prevented, increasing durability. can be improved.

In addition, in this embodiment, the inclined wall 4a, the inner walls 6 above and below the inclined wall 4a, and the lower part of the side plate 4 are arranged in a cross-sectional view approximately S.
Since a letter-shaped bent shape is formed in the middle of the side plate 4, even if an excessive force is applied downwardly or in the axial direction from the roller 3, these forces can be supported by the cushion, and the excessive force can be supported. Side plate 4 against force
plastic deformation is prevented.

Furthermore, regarding the outer wall 7 of the square frame part F,
It is arranged near the end of the support pin 9 so as to be flush with the lower part of the side plate 4 and to restrict the lateral movement of the support pin 9. In particular, in this embodiment, the support pin 9 is secured in advance by the holding piece 12a below the retaining piece 12. Since both ends are held down, when excessive downward force is applied,
The support pin 9 is aligned with the direction of inclination of the inclined wall 4a.
acts as a so-called lining, preventing the side plates 4 from being deformed so that they approach each other, and when an excessive force is applied in the axial direction of the roller 3, the force is absorbed through the abutment between the end of the support pin 9 and the outer wall 7. The transmission is ensured and the cushioning action of the inclined wall 4a is promoted.

Furthermore, in this embodiment, the recess 8 formed by being surrounded by the inclined wall 4a and the lower wall 7a extends continuously in the longitudinal direction of the support frame 2.
By hooking the fingertip into the recess 8, it can be handled very safely and reliably.
Since the support frame 2 and the side plate 4 are flush with each other, the cross-sectional shape of the support frame 2 is substantially rectangular and has a compact shape, so that it does not take up much bulk even when placed side by side during transportation.

(Effects of the invention) According to the invention, the lower part of the side plate 4 is bulged outward through the inclined wall 4a, so that the roller support frame 2 is Stability can be improved, and the sloped wall 4a
The approximately S-shaped bent shape formed by the upper and lower inner walls 6 and the lower part of the side plate 4 allows them to be cushionedly supported against forces in either the downward direction or the axial direction of the rollers. Therefore, plastic deformation of the side plate 4 due to excessive force can be avoided as much as possible, and the strength of the roller support frame 2 can be improved.

Further, according to the present invention, the outer wall 7 constituting the square frame part F is flush with the lower part of the side plate 4 and is arranged near the end of the support pin 9 in order to restrict the lateral movement of the support pin 9. , the deformation of the roller support frame 2 can be prevented by the lining action of the support pin 9 against an excessive force in the downward direction, and the end of the support pin 9 and the outer wall can prevent the roller support frame 2 from being deformed against an excessive force in the axial direction of the roller 3. The force is reliably transmitted to the inclined wall 4a through the contact with the roller support frame 2, and the cushioning action of the inclined wall 4a is promoted. can contribute to

Further, the retaining piece 12 in the present invention is cut and raised on the outer wall 7 side, and is elastically deformed outward when the support pin 9 is inserted, and after insertion, engages with the end of the support pin 9 by overlapping in the axial direction. Therefore, the support pin 9 can be easily inserted, and moreover, it can be more completely prevented from falling off after insertion.

Further, according to the present invention, the recess 8 surrounded by the inclined wall 4a and the lower wall 7a of the square frame part F is continuously formed on the side surface of the roller support frame 2 along the longitudinal direction. Therefore, the fingertip can be safely hooked into the recess 8, and the roller support frame 2 can be transported or installed very safely and reliably.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of essential parts showing an embodiment of the present invention, Fig. 2 is an overall side view of the same, Fig. 3 is a view taken from Fig. 2 - a cross-sectional view taken along the line, and Fig. 4 is a sectional view taken from Fig. 3 - a sectional view taken along the line. Figure, 5th
The figures are Figure 3 - line cross-sectional view, Figures 6 to 9.
The figures show a conventional example, and Fig. 6 is a perspective view of the roller support frame, Fig. 7 is a longitudinal sectional view of the same, Fig. 8 is a partially cutaway perspective view of the roller support frame, and Fig. 9 is a longitudinal sectional view of the same. be. 1...Roller table, 2...Roller support frame,
3...Roller, 4...Side plate, 4a...Slanted wall, 5
... bottom plate, 6 ... inner wall, 6a ... upper wall, 7 ... outer wall, 7a ... outer wall, 9 ... support pin, 11 ... insertion groove, 12 ... retaining piece, F ... square frame part.

Claims (1)

[Claims for Utility Model Registration] A bottom plate 5, a pair of left and right side plates 4, 4 bent from both ends of the bottom plate 5 in the width direction, and each side plate 4, 4.
Upper walls 6a, 6b extending outward in the width direction from the upper end
and outer walls 7, 7 extending downward from the outer ends of the upper walls 6a, 6a, and insertion grooves 11 formed with cutouts extending from the upper wall 6a to the side plate 4 are arranged on the left and right at predetermined intervals in the longitudinal direction. The insertion grooves 1 are provided oppositely.
In the roller support frame of the roller table in which the support pin 9 for supporting the roller 3 is pivotally supported between 1 and 11, the lower part of the side plate 4 is connected to the lower part of the side plate 4 via an inclined wall 4a which is inclined downwardly and outwardly below the insertion groove 11. The outer wall 7 is formed in an outwardly bulging shape, extends below the support pin 9, is flush with the lower part of the side plate 4, and has an end portion of the support pin 9 to restrict lateral movement of the support pin 9. A retaining piece is arranged in the vicinity of the outer wall 7 and elastically deforms outward when the support pin 9 is inserted, and overlaps the end of the support pin 9 in the axial direction after insertion to prevent the support pin 9 from coming off. 12 is formed by cutting downward and inwardly from the outer wall 7 above the support pin 9, and extends inward in the width direction from the lower end of the outer wall 7.
a is formed so that its tip is located near the side plate 4, and has a substantially closed rectangular shape consisting of an inner wall 6, which is the side plate 4 above the inclined wall 4a, an upper wall 6a, an outer wall 7, and a lower wall 7a. A roller support frame for a roller table, characterized in that a rectangular frame portion F is formed.