JPH07315532A - Roller structure for carrying shape steel - Google Patents

Abstract

PURPOSE:To provide a roller structure for carrying a shape steel which safely and smoothly supports the shape steel to be supported on a roller and carried and prevents the interference of the shape steel being carried with the roller and executes smooth carriage. CONSTITUTION:A roller structure is abutted on the lower surface of a shape steel 6, and arranged in an inclined manner at the same angle of inclination to each other, and the shape steel 6 is supported by a first and a second roller 1, 2 of the same outer diameter. A clearance part 7 to prevent the interference with a holding part of the shape steel 6, e.g. a fixing-clamping part 34 is formed on either of or both of the first and second roller 1, 2. Because the first and second roller 1, 2 are constantly rotated at the same circumferential speed, the shape steel 6 is safely and smoothly carried and supported thereby, and the interference is prevented by the clearance part 7 to execute the smooth carriage of the steel product.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a steel material as a construction material,
For example, relating to a roller structure that supports and conveys L-shaped steel,
In particular, the present invention relates to a shaped steel conveying roller structure capable of stably and smoothly supporting a long shaped steel to be conveyed and preventing interference with a gripping portion of the shaped steel.

[0002]

2. Description of the Related Art A conveying device for conveying a long shaped steel is provided with a large number of rollers for supporting the shaped steel. These rollers are in contact with the lower surfaces of both sides of an L-shaped shaped steel. It is arranged together. In order to convey the shaped steel, it is necessary to press the rear end surface of the shaped steel or to provide a conveyance drive unit or the like having a gripping portion that grips one side of the shaped steel and moves in the conveying direction. The roller group contacting the lower surface of this shaped steel is arranged at the fixed position of the base,
The shaped steel is placed on the roller, and the gripping portion for gripping the shaped steel of the transport drive unit moves together with the shaped steel. Therefore, the gripping portion needs to be arranged at a portion that does not interfere with the roller.

FIG. 8 shows a conventional commercially available product.
It will be described based on. A pair of the first roller 41 and the second roller 42, which have the same shape and form the conical portion 40 at the tip, are arranged to face each other with their axes of rotation along the same straight line. The conical portion 40 is arranged so as to be in full contact with portions of the lower surfaces of both sides of the shaped steel 6 close to the apex angle. That is, the L-shaped steel section 6 is supported by abutting engagement with the conical portions 40, 40 of the pair of first and second rollers, respectively. The first roller 41 and the second roller 42 rotate around the rotation axis as the shaped steel 6 moves.

[0004]

The conventional roller structure shown in FIG. 8 has the following problems. As described above, the shaped steel 6 is used for the first roller 41 and the second roller 4
It is supported by two conical portions 40, and the conical portions 40 rotate as the shaped steel 6 moves. However, in this case the cone 4
Circumferential velocities are different between the 0 position and the 0 position shown in the figure. Therefore, “sliding” occurs at the contact portion between the conical portion 40 and the shaped steel 6, and the transportation of the shaped steel 6 tends to be unsmooth. Further, even if there is a slight difference in the shape of the conical portion 40 of the first roller 41 and the second roller 42, the left and right are not balanced, and the shaped steel 6 is difficult to be smoothly and quickly conveyed. .

On the other hand, as shown in FIG. 8, a grip portion 43 for gripping the shaped steel 6 engages with the upper edge on one side of the shaped steel 6. In the case of this conventional technique, the grip portion 43 is arranged at a position apart from the roller fixedly supported by the frame body in order to prevent interference with the pair of rollers 41 and 42. The abutting portions of the first roller 41 and the second roller 42 with the shaped steel 6 and the gripping position of the gripping portion 43 are arranged slightly apart from each other as shown in FIG. Therefore, a moment acts on the abutting portion of each roller due to the conveying force acting on the holding position of the shaped steel 6. Therefore, there is a problem that the shaped steel is moved more smoothly. Furthermore, since the top of the shaped steel is only supported by the conical portion, the upper edge is unstable, and in the case of a long product, lateral shake often occurs, so the gripping part is limited to the upper end part. There was a problem.

The present invention solves the above-mentioned problems, and the shaped steel is always smoothly and stably conveyed on the roller, and the interference between the supporting roller and the holding portion of the shaped steel is prevented. An object of the present invention is to provide a shaped-steel-conveying roller structure.

[0007]

In order to achieve the above object, the present invention provides a roller structure for supporting a shaped steel being conveyed, the outer periphery of which is abuttingly engaged with the lower surface of the shaped steel, Diagonal L
A first and / or a second roller arranged in a V shape, the first and second rollers having the same outer diameter and forming a shaped steel conveying roller structure which is pivotally supported on the stationary side. is there. Also, the first roller and the second roller
One or both of the rollers are provided with a relief portion for preventing interference with the grip portion of the transport driving unit that grips and transports the shaped steel, and the first roller and the second roller One or both of them are formed by arranging a pair of bearings on the support shaft with an appropriate gap, and have a shaped steel conveying roller structure in which the gap serves as the relief portion.

[0008]

The pair of first and second rollers having the same outer diameter support the shaped steel by contacting the outer circumferences with the lower surfaces of both sides of the shaped steel. When the shaped steel is conveyed, the first and second
The rollers rotate. Since both rollers have the same outer diameter, the peripheral speed is the same at all contact points between the rollers and the shaped steel. Therefore, the shaped steel can be stably and smoothly conveyed without lateral deflection or the like. Further, since the shaped steel is supported on both sides by the first roller and the second roller, it is stably supported on the rollers. On the other hand, shaped steel is gripped by the gripping part of the transporting drive part and conveyed, but since the relief part is provided on the roller side to prevent interference with this gripping part, the gripping part is located at the position where the roller is arranged. No interference with the roller occurs even if it is placed in the.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an outline structure of a roller of this embodiment and an engagement state between the roller and a shaped steel, FIG. 2 is an axial sectional view of an embodiment of the roller, and FIG. 3 is another embodiment of the roller of the present invention. FIG. 4 is a sectional view showing an engaged state between the rollers and the shaped steels of FIGS. 2 and 3, and FIG. 5 is a sectional view of an automatic conveying / piercing / cutting apparatus for shaped steels to which the roller structure of this embodiment is applied. FIG. 6 is a top view showing a schematic structure, FIG. 6 is an enlarged top view showing a conveyance drive unit in the apparatus of FIG. 5, and FIG. 7 is an engagement between the conveyance drive unit and the roller structure of this embodiment taken along the line AA in FIG. It is sectional drawing which shows a state.

As shown in FIG. 1, the roller structure of the present embodiment.
Is a pair of cylindrical first roller 1 and second roller 2
Consists of Outside the first roller 1 and the second roller 2
Diameter d ₁, D₂Have the same outer diameter. These first
The roller 1 and the second roller 2 are attached to the support base 3 at their base ends.
Part that is fixed and tilts diagonally into an L shape at the same tilt angle
It is pivotally supported on the first and second central axes 4, 5. This first
The outer circumference of the roller 1 and the second roller 2 is L-shaped.
The steel 6 is arranged so as to be in contact with the lower surfaces of both sides and be inclined. sand
That is, the shaped steel 6 has the same inclination angle as the first and second inclinations.
It is supported from the lower surface by the rollers 1 and 2. In this example
Has a relief portion 7 on both the first and second rollers, 1, 2.
Formed, but either one as shown in FIG.
The roller may not have the escape portion 7.

FIG. 2 shows the detailed structure of the first and second rollers 1 and 2 having the escape portion 7. Since both rollers have the same structure, only the first roller 1 will be described. An escape portion 7 is recessed in a substantially central portion of a cylindrical outer cylinder 8 having an outer diameter d ₁ . Bearings 9 and 10 are fitted on both sides of the outer cylinder 8. The center shaft 4 is fitted to the inner races of the bearings 9 and 10 and fixed by a nut 11. In addition, the bearing 9,
The collar 10 is held at a predetermined interval by the collar 12. With the above structure, the outer cylinder 8 has the bearings 9, 10 centered on the central shaft 4.
Is pivotally supported on the central axis 4 via.

FIG. 3 shows a first embodiment of another embodiment of the roller of the present invention.
The roller 1a is shown. This does not use the outer cylinder 8 of FIG. The bearings 9a and 10a having the outer diameter d are collars 12
The nut 11a is fitted to the central shaft 4a at appropriate intervals via a.
Fixed by. In this embodiment, the outer races of the bearings 9a and 10a correspond to the outer cylinder 8 shown in FIG. In this embodiment, the clearance 7a corresponds to the gap between the bearings 9a and 10a. That is, in this embodiment, unlike the case of FIG. 2, it is not necessary to purposely form the escape portion 7.

In FIG. 4, the first roller 1 shown in FIG. 2 without the relief portion 7 is used as the first roller 1, and the first roller 1a shown in FIG. 3 is used as the second roller 2. The following are examples. Both rollers 1 and 2 are arranged on a support base 3 fixed on a support bracket 13 while being inclined at the same inclination angle. As described above, the outer diameters of the outer circumferences of the rollers 1 and 2 that contact the lower surfaces of both sides of the shaped steel 6 are the same. As shown in the figure, the escape portion 7 of the second roller 2 has a fixed clamp portion 34, which is one of the holding portions, interposed therebetween, but they do not interfere with each other.

Next, an outline of an automatic conveying / piercing / cutting apparatus for steel products to which the roller structure of this embodiment is applied will be described with reference to FIG. A plurality of rollers composed of the first roller 1 and the second roller 2 shown in FIG. 4 are arranged at appropriate intervals on the stationary base base 14 of the apparatus along the conveying direction of the shaped steel 6. The shaped steel 6 mounted on the roller is gripped by the clamp mechanism portion 15 and is transported by the transport driving portion 16. The transported shaped steel 6 is positioned and fixed by the fixing mechanism 17 for punching and punched at a predetermined position by punching machines 18, 19. After the perforation, the shaped steel 6 is positioned and fixed by the cutting fixing mechanism unit 20, cut into a predetermined cutting length by the cutting device 21, and discharged from the discharging mechanism unit 22.

Next, referring to FIGS. 6 and 7, the clamp mechanism portion 1
5 and the transport drive unit 16 will be outlined. Guide rails 23, 23 and a rack 24 are fixed on the base 14. The support bracket 13 is provided on the side surface of the base 14.
Is supported in a cantilever manner, and a support base 3 for supporting the rollers is fixed thereon. A cord roller 26 that engages with a cord chain 25 is connected to the other side surface of the base 14. On the other hand, the guide rail 23,
Slide blocks 28, 28 slidably engaged with 23
Is fixed, and the drive motor 29 is fixed to the upper surface thereof. A pinion gear 31 that meshes with the rack 24 is fixed to the motor shaft 30. The base end side of the cantilever support bracket 32 is fixed to the carrier table 27. The tip side of the cantilever support bracket 32 is arranged close to the roller side.

As shown in FIG. 6, the base end side of the fixing member 33 of the clamp mechanism portion 15 is fixed to the tip of the cantilever support bracket 32. The fixing member 33 extends along the conveying direction of the shaped steel 6 and a fixing clamp portion 34 is formed at the tip thereof. On the other hand, the swing member 35 has an intermediate portion pivotally supported on the fixed member 33 side via a pin 36, and a movable clamp portion 37 is formed on one side opposite to the fixed clamp portion 34. A pressure cylinder 38 fixed to the fixing member 33 is connected to the other side. Further, a spring 39 that constantly biases the movable clamp portion 37 in a direction separating from the fixed clamp portion 34 is interposed between the fixed member 33 and the swing member 35.
With the above structure, the shaped steel 6 is clamped in the vicinity of the rear end by the fixed clamp portion 34 and the movable clamp portion 37 of the clamp mechanism portion 15, and is conveyed in the conveyance direction by the operation of the drive motor 29 of the conveyance drive portion 16.

As shown in FIG. 4, the shaped steel 6 is sandwiched between the fixed clamp portion 34 and the movable clamp portion 37.
The fixed clamp portion 34 is housed in the escape portion 7 as described above. Therefore, when the shaped steel 6 is transported, the fixed clamp portion 3
4 does not interfere with the second roller 2. Further, since the moving clamp portion 37 is arranged on the upper surface side of the shaped steel 6, it does not interfere with the roller side. Due to the above, even if the transport driving unit 16 moves and the shaped steel 6 is transported, the first and second rollers,
No interference with 1, 2 occurs. On the other hand, the first roller 1 and the second roller 2 rotate as the shaped steel 6 is conveyed. That is, the outer cylinder 8 (FIG. 2) of the first roller 1 and the second roller 2
The bearings 9a and 10a of FIG. 3 (FIG. 3) rotate, but they have the same outer diameter (d ₁ = d ₂ ). Further, as described above, the first and second rollers 1 and 2 are arranged on the support base 3 with the same inclination angle. Therefore, the shaped steel 6 supported by the first and second rollers 1, 2 and the first
Also, the contact portions with the second rollers 1 and 2 rotate at the same peripheral speed, and the moment to the support base 3 side due to the frictional force generated therebetween is also constant. As a result, the shaped steel 6 is stably supported on the first and second rollers 1 and 2 without lateral deflection, and is smoothly fed along the carrying direction.

In this embodiment, the structure is as shown in FIG. 4, but the structure of the first and second rollers 1 and 2 for engaging the shaped steel 6 is limited to that of FIG. 4 as described above. Not something to do. Further, the escape portion 7 is not limited to the one shown in the figure, and may be provided in either one or both. Also, the bearings 9, 10, 9
The structure of a and 10a is not limited to this bearing.
Further, the shape of the escape portion 7 is not limited to that shown in the figure, and is formed in a shape necessary for preventing interference.

[0019]

According to the present invention, the following remarkable effects are obtained. 1) Since the lower surfaces of both sides of the shaped steel are supported by rollers having the same outer diameter, “sliding” does not occur between the shaped steel and the rollers.
The peripheral speed is also constant. Therefore, shaped steel smoothly,
In addition, it is stably and straightly transferred. 2) The friction loss between the shaped steel and the roller is small, and the transportation efficiency is improved. 3) Since the escape portion for preventing interference is formed on the roller side, it does not interfere with the grip portion of the shaped steel. That is, the rollers do not interfere with the transportation of the shaped steel. 4) A relief portion is formed by using bearings for the rollers and arranging the bearings at appropriate intervals, and it is not necessary to form a special relief portion by processing or the like. As a result, the parts can be simplified and the processing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a schematic structure of a roller of one embodiment of the present invention and an engaged state of the roller and a shaped steel.

FIG. 2 is an axial sectional view of an embodiment of a roller used in the present invention.

FIG. 3 is an axial sectional view of another embodiment of the roller used in the present invention.

FIG. 4 is a cross-sectional view showing an example of a roller structure showing an engaged state between the rollers of FIGS. 2 and 3 and the shaped steel.

FIG. 5 is a top view showing a schematic structure of a steel material automatic transport perforation / cutting apparatus to which an embodiment of the present invention is applied.

6 is an enlarged top view showing a clamp mechanism section, a conveyance drive section, and the like in the apparatus of FIG.

FIG. 7 is a cross-sectional view showing an engaged state of the transport driving unit and the like and the roller structure of the present embodiment in a cross section taken along the line AA in FIG.

FIG. 8 is a sectional view showing an example of a conventional roller structure.

[Explanation of symbols]

 1, 1a ... 1st roller 2 ... 2nd roller 3 ... Support stand 4, 4a ... 1st roller center axis 5 2nd roller center axis 6 Shaped steel 7, 7a Relief part 8 Outer cylinder 9, 9a Bearing 10, 10a Bearing 11, 11a Nut 12, 12a Collar 13 Support bracket 14 Base stand 15 Clamp mechanism part 16 Transport drive part 17 Perforation fixing mechanism part 18, 19 Perforator 20 Cutting fixing mechanism part 21 Cutting device 22 Ejection Mechanism part 23 Guide rail 24 Rack 25 Code chain 26 Code roller 27 Conveyor stand 28 Slide block 29 Drive motor 30 Motor shaft 31 Pinion gear 32 Cantilever support bracket 33 Fixing member 34 Fixing clamp part 35 Swinging member 36 Pin 37 Moving clamp part 38 Pressurizing cylinder 39 Spring

Claims (3)

[Claims] 1. A roller structure in which a large number of rollers for supporting a shaped steel being conveyed are arranged, the outer periphery of which is abutted and engaged with the lower surface of the shaped steel, and which is arranged in an oblique L shape. A roller and / or a second roller,
The first and second rollers have the same outer diameter and are pivotally supported by a frame body on the base side, and a shaped steel conveying roller structure. 2. A relief portion for preventing interference with a grip portion of a clamp mechanism of a transport drive portion that grips and transports the shaped steel, on one or both of the first roller and the second roller. The shaped steel conveying roller structure according to claim 1, which is formed. 3. One or both of the first roller and the second roller comprises a pair of bearings arranged on a support shaft with an appropriate gap, and the gap serves as the relief portion. The roller structure for transporting a shaped steel according to claim 2, characterized in that.