JPH05338923A - Flange for winding beam and its manufacture - Google Patents

Abstract

PURPOSE:To manufacture a product having strength characteristics preferable to a flange which has been made larger recently as a flange for a winding beam for warps used in a spinning machine by means of comparatively simple arid compact equipment. CONSTITUTION:In a method wherein crossing reinforcing ribs 14 are integrally formed so as to be disposed in the outer side of a disc shaped base surface 13 formed between a ring shaped shaft attaching section 11 and a peripheral circular section 12, the base surface 13 of the ring shaped shaft attaching section 11 is made maximum in thickness, and the reinforcing ribs 14 are concurrently made thinner in thickness as they go to the peripheral circular section 12 from the ring shaped shaft attaching section 11, and an inclining angle formed between the axial line of each rib and the radial direction of the disc shaped base plate 13 at the cross sections 14d of the reinforcing ribs 14 shall be less than 45 deg..

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a take-up beam flange and a method for manufacturing the same, and to provide a product having a preferable strength characteristic for a large-sized flange recently used as a warp take-up beam flange in a loom. The purpose of the present invention is to make it possible to manufacture simply and accurately with a relatively simple and compact equipment.

[0002]

2. Description of the Related Art As a beam for winding and supplying a warp yarn in a loom, the diameter of the flange is gradually increasing, and recently, a beam having a large diameter exceeding 7,000 to 8,000 mm is used. It has been adopted, and some proposals have been made for such beam flanges.

That is, in JP-B-47-46863, a hub, a flange radially extending from the hub, and a rib extending from the hub portion to the outside of the flange are provided, and the rib is close to the hub. It is proposed to be approximately tangential in the band and to extend radiatively in the band radially outside the band.

Further, in Japanese Patent Laid-Open No. 51-23340, it is proposed that a spiral rib and a concentric rib are arranged in combination on the flange, and a rib portion corresponding to this is formed.

[0005] Furthermore, the present applicant's utility model Sho 58-3798
In Japanese Patent No. 0, the annular base and the outer periphery thereof are formed,
A disk-shaped base plate having the largest thickness on the inner peripheral side of one side, the outer peripheral side following this is gradually thinned in a flared shape, and has an annular flange portion on the outermost peripheral side, and the inner peripheral side on one side of the base plate. Vertical ribs that are radially erected between the surface and the inner peripheral surface of the collar portion and have notches at predetermined intervals in the middle, and a cross shape that sequentially connects adjacent free end portions of the sewing ribs in a crossing manner. There has been proposed a yarn beam flange integrally formed with a reinforcing rib including a connecting rib.

[0006]

Although it can be understood that each of the above-mentioned prior arts has their respective merits, it is a flange for a take-up beam whose diameter is recently increased to 800 mm or more. Is not easy to manufacture properly. That is, the large beam as described above requires a large amount of yarn to be wound between the flanges thereof, and in particular, a synthetic fiber yarn has a large weight, which is required for the take-up beam forming member. The strength is remarkably high, and on the other hand, it is required to be lightweight because it must rotate at high speed, and it is not easy to properly obtain a product satisfying these relationships with relatively simple equipment. ..

That is, it goes without saying that a mold is required to cast a large-sized flange as described above, but high-pressure casting is generally required when pouring the molten metal into the mold. Therefore, in order to make this high-pressure casting, it is necessary that the whole of the molten metal injection equipment complies with the high-pressure system, and the equipment becomes large and strong, and the amount of molten metal and the overall press-fitting mechanism are large. Get more sophisticated.

On the other hand, recently, a low pressure casting method capable of casting under a relatively low pressure condition is becoming widespread. When this low pressure casting method is used, the entire casting equipment can be simplified and made compact, but a relatively small pin or pin is used. In the case of a product that is generally a large product with a diameter of more than 800 mm as described above and that is required to have strong strength under the severe operating conditions associated with high speed rotation, as described above. However, it is difficult to secure a proper metal flow in the entire mold under the low pressure casting conditions and obtain a product excellent in strength.

[0009]

SUMMARY OF THE INVENTION The present invention has been made as a result of repeated studies to solve the technical problems in the above-mentioned conventional ones, and as a result, by proposing a peculiar beam flange, it is possible to realize the above-mentioned low pressure casting method. The successful beam flange was obtained as follows.

(1) In the one in which reinforcing ribs crossing the disk-shaped substrate surface formed between the ring-shaped shaft attachment portion and the peripheral annular portion are arranged integrally, the ring-shaped shaft attachment portion is formed. The maximum thickness of the reinforcing ribs is formed on the substrate surface, and the reinforcing ribs are formed to have a small thickness from the ring-shaped shaft-attached portion to the peripheral annular portion, and the reinforcements are formed and arranged. A flange for a take-up beam, characterized in that the axis of the intersection of the ribs has an inclination angle of less than 45 ° with respect to the radial direction of the disk-shaped substrate.

(2) A winding in which a disc-shaped substrate is integrally formed between the ring-shaped shaft-attached portion and the peripheral annular portion, and reinforcing ribs crossing the disc-shaped substrate surface are integrally disposed. When casting the flange for the take-up beam, a pouring port is formed in the ring-shaped shaft-attached portion, and the axis line at the intersection of the reinforcing ribs has an inclination angle of 45 ° with respect to the radial direction of the disk-shaped substrate.
A method for manufacturing a flange for a take-up beam, characterized in that the molten metal is injection-molded by low-pressure casting at 1 kg / cm ² or less.

[0012]

By comparing and integrally forming reinforcing ribs crossing the outer surface of the plate-like substrate formed between the ring-shaped shaft-attached portion and the peripheral annular portion, the appropriate strength of the beam flange can be compared. It can be obtained with a thin and lightweight product.

The wall thickness of the ring-shaped shaft mounting portion formed on the substrate surface is maximized, and the wall thickness of the reinforcing rib is reduced from the ring-shaped shaft mounting portion to the peripheral annular portion. This makes it possible to obtain a preferable reinforcing action by the reinforcing ribs under the condition of high speed rotation.

By forming the intersecting portions on the reinforcing ribs formed as described above, the reinforcing action in which the reinforcing ribs are connected to each other is distributed and formed on the entire surface of the substrate, and the intersecting portions of such reinforcing ribs are formed. By setting the angle of inclination of the axis of the disk substrate with respect to the radial direction of the above-mentioned disk-shaped substrate to less than 45 °, the metal flow flowing in the radial direction in the reinforcing rib is improved, and the large-diameter disk-shaped member having a diameter of 800 mm or more In order to facilitate the supply and filling of metal to the peripheral annular portion and the like via the radial ribs, the solid peripheral annular portion and ribs are formed.

In casting the flange as described above, a pouring port is formed in the ring-shaped shaft-attaching portion and low-pressure casting is performed, so that the pouring is solidified sequentially from the peripheral annular portion. A predetermined casting pressure is sequentially applied to each component by the low pressure casting technique to cast a solid and uniform structure, and a predetermined strength can be stably obtained.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A concrete embodiment of the present invention as described above will be described with reference to the accompanying drawings.
As shown in FIGS. 3 and 4 to 8, the disk-shaped substrate surface 13 is formed between the thick-walled ring-shaped shaft mounting portion 11 into which the winding shaft 10 is screwed and the peripheral annular portion 12. What is done is
This is as shown in FIG. 6, respectively.

In the flange 1 as described above, the peripheral annular portion 12 and the ring-shaped shaft attachment portion 1 are provided outside the disc-shaped substrate surface 13.
1 to FIG.
1, the reinforcing rib 14 has a base portion 14a along the radial line on the ring-shaped shaft attachment portion 11 side in FIG. 1, and the branch portion 14 is provided at the tip of the base portion 14a.
inclined portions 14c, 1 inclined from b toward the radial line, respectively
4c, these inclined portions 14c, 14c form a crossing portion 14d in the middle, and the tip portion 14 along the radial direction is further formed.
It is connected to the peripheral annular portion 12 via e.

In FIG. 2, the base portion 14a along the radial line is formed on the ring-shaped shaft attachment portion 11 side, and the inclined portions 14c, 14c are formed via the branch portion 14b. As in the case of FIG. 1, another branch portion 14b is formed until the inclined portions 14c, 14c intersect at the intersection portion 14d, and the portion between the intersection portion 14d and the peripheral annular portion 12 is again formed. It is a branch connecting portion 14b.

Further, in the structure shown in FIG. 3, the ring-shaped shaft mounting portion 1
The base portion 14a on the first side, the branch portion 14b, the intersection portion 14d on the peripheral annular portion 12 side, and the inclined portion 14c are the same as those in FIG. 1 described above, but there is no difference between the intersection portion 14d and the peripheral annular portion 12b. One branch connecting part 14g
Is formed and is connected to the peripheral annular portion 12 by the inclined branch connecting portion 14f.

Therefore, in these FIGS. 1 to 3,
As shown in each figure, the inclination angle of each inclined portion 14c or 14g branched at the branch portion 14b or 14f with respect to the radial line of the flange 1 is less than 45 °, particularly 30 ° or less.

The height of the reinforcing ribs 14 is highest on the side of the ring-shaped shaft portion 11 and lowers toward the side of the peripheral annular portion 12 as shown in FIGS. Regarding the thickness (width in plan view), it is preferable that the ring-shaped shaft attachment portion 11 side is thick and the peripheral annular portion 12 side is appropriately thin.

An angular groove-shaped female thread 15 is formed in the hole of the ring-shaped shaft attachment portion 11 described above, and the angular protrusions formed at both ends of the winding shaft 10 are formed in the angular groove-shaped female thread 15. The male thread 18 having a shape of a screw is screwed in. The tightening metal fitting 3 as shown in FIG. 10 is attached to the threaded end of the winding shaft 10 as described above.

That is, in order to attach the tightening fitting 3 as described above, the protrusions 16 are appropriately provided on the circumferential side of the ring-shaped shaft attachment portion 11 which is thick in each flange 1 as described above. As shown in FIG. 9, the tightening metal fitting 3 is formed in a state in which it is formed and connected to the winding shaft 10 by the above-described square screw thread.
By fixing the screw 4 to the screw, a frictional force is generated in the engaging portion formed by the square screw thread, and the flange 1 is prevented from loosening during high-speed rotation.

The above-mentioned tightening fitting 3 has a rectangular thread 31 and is provided with a screw insertion hole 32. In the present invention, a gear or pulley for transmitting a rotational force is provided to the beam flange. Fig. 10 when installing
The structure shown in the other end side of the winding shaft 10 is also adopted. That is, in this case, a gear 5 (or a pulley) is adopted instead of the tightening fitting 3, and the screw stopper 4 is used.
Is also used for the winding shaft 10 as appropriate. The screw insertion hole 32 is positioned so as to match the screw hole 16 in the ring-shaped shaft attachment portion 11.

The one according to the present invention is cast by a suitable casting equipment as is known in the art. That is, by using a split type die having a cavity, an injection hole is provided in a molding portion where the shaft hole portion of the ring-shaped shaft attachment portion 11 is to be formed, and pouring is performed in the cavity as described above for solidification molding. To do.

As described above, the reinforcing rib 14 has the crossing portion 1 thereof.
45 in radial direction of flange 1 at 4d and 14f
In the case of the present invention set to less than 30 °, particularly 30 ° or less, even if the diameter exceeds 800 mm and reaches 1000 mm or more, the molten metal is injected under a low injection pressure condition of 1 kg / cm ² or less. Reach the peripheral edge annular portion 12 preferentially, the peripheral edge annular portion 12 is first solidified and molded, and the substrate surface 1 is formed by the injection pressure under the conditions where the peripheral edge annular portion 12 is solidified.
3 and the reinforcing rib 14 are solidified and molded in order from the peripheral annular portion 12 side.

Therefore, not only in the peripheral annular portion 12 which is preferentially solidified and molded, but also in each of the reinforcing ribs 14, the injection and solidification is always performed under the accurate working conditions of the injection pressure, and the uniform and dense is achieved under the low pressure casting condition. A cast structure can be formed.

As a concrete production example, when reinforcing ribs 4 as shown in FIG. 1 are provided and a flange 1 having a diameter of 800 mm is cast, Si: 7.2%, Mg: 0.3% are contained, and the balance is
A molten aluminum alloy composed of Al and inevitable impurities was prepared by melting at about 730 ° C., and the molten metal was cast from a spout formed inside the ring-shaped shaft-attaching portion 11,
Casting was performed at a casting pressure of 0.55 kg / cm ² .

That is, as a result of examining the finished state by demolding the cast product as described above, it was found that a good flange for a take-up beam, in which the whole is solid and has no defects such as surface defects Since the casting pressure is low as described above, the casting equipment as a whole was simple and compact and could be obtained appropriately.

[0030]

According to the present invention as described above, a large take-up beam flange having a diameter of more than 1 m is accurately cast under conditions that are simple in equipment and operation, such as low pressure casting, Further, since it is possible to manufacture a preferable product excellent in quality at a relatively low cost, and to effectively use this type of take-up beam that is large in size and rotates at a high speed, it is an industrially great invention.

[Brief description of drawings]

FIG. 1 is a plan view of an example of a take-up beam flange according to the present invention viewed from the outer surface side.

FIG. 2 is a plan view similar to FIG. 1, of a take-up beam flange according to another embodiment of the present invention.

FIG. 3 is a plan view similar to FIGS. 1 and 2 of a take-up beam flange according to still another embodiment of the present invention.

FIG. 4 is a rear view thereof.

5 is a sectional view taken along line V ... V of the embodiment shown in FIG.

6 is a sectional view taken along line VI ... VI of the embodiment shown in FIG.

7 is a sectional view taken along line VII --- VII of what is shown in FIG.

8 is a sectional view taken along line VIII --- VIII of the one shown in FIG.

FIG. 9 is a sectional view of an example of a take-up beam formed by attaching a flange to a winding shaft according to the present invention.

FIG. 10 is a plan view of a tightening fitting used in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flange 3 Tightening fitting 4 Screw stop 5 Gear (or pulley) 6 Cavity 7 Mold 8 Mold 9 Injection hole 10 Winding shaft 11 Ring-shaped shaft attachment part 12 Peripheral annular part 13 Base plate surface 14 Reinforcing rib 14a Its base part 14b Branch Part 14c Inclined part 14d Crossing part 14e Tip part 14f Branch part 14g Branch connection part 14h Branch connection part 15 Female screw thread 16 Screw hole 18 Male screw thread 31 Square screw thread 31 Screw insertion hole

Claims (2)

[Claims] 1. A structure in which reinforcing ribs, which intersect with each other on the outside of a disk-shaped substrate surface formed between a ring-shaped shaft attachment portion and a peripheral annular portion, are integrally disposed and formed, wherein the ring-shaped shaft attachment portion is formed. The thickness of the reinforcing ribs formed on the substrate surface is maximized, and the thickness of the reinforcing ribs is reduced from the ring-shaped shaft-attaching portion to the peripheral annular portion, and the reinforcing ribs are arranged and formed. A flange for a take-up beam, wherein the axis of the intersection of the disk substrate has an inclination angle of less than 45 ° with respect to the radial direction of the disk-shaped substrate. 2. A winding device in which a disc-shaped substrate is integrally formed between a ring-shaped shaft-attached portion and a peripheral annular portion, and reinforcing ribs crossing the disc-shaped substrate surface are integrally disposed. In casting the beam flange, a pouring port is formed in the ring-shaped shaft attachment portion, and the axis of the crossing portion of the reinforcing ribs is set to be less than 45 ° with respect to the radial direction of the disc-shaped substrate. A method for manufacturing a flange for a take-up beam, which comprises casting a molten metal by low pressure casting at 1 kg / cm ² or less.