KR800001133Y1 - Pulley Forming Apparatus from Metal Round Plate - Google Patents

Abstract

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Description

Pulley Forming Apparatus from Metal Round Plate

FIG. 1 is a plan view of a pulley (pulle wheel) forming apparatus according to the present invention, and a cross-sectional view and a cut-out state of certain parts of the apparatus are shown, which may be a longitudinal section along line 1-1 of FIG. .

FIG. 2 is a front view showing the various parts of the first FIG.

FIG. 3 is a right side view of the various parts of the FIG. 2 device cut away.

4 is a perspective view of a metal round plate or perforated disc for producing a pulley of the present invention.

5 is a cross-sectional view in the radial direction of the pulley finished product produced by the present invention, the hub portion is installed.

6 is a side view of the peninsula diagram showing the arrangement of a heater for manufacturing a small pulley according to the present invention.

FIG. 7 is a view similar to that of FIG. 6 but illustrates an arrangement method of a heater for manufacturing a large pulley according to the present invention.

8 to 10 are diagrams illustrating the process of forming the pulley in a continuous operation step by the device of the present invention, and are views taken along line 8-8 of FIG.

FIG. 11 is a view similar to FIGS. 8 to 10, showing an example of the final operation step of the device of the present invention, taken along line 11-11 of FIG.

This invention relates to the shaping | molding apparatus of the pulley in which the annular groove of the kind which can hang a wire wire from the circular flat plate is hung.

Pulleys of the type with grooves for hanging wires or ropes have been manufactured in many different ways to date. Typically, this type of pulley can be produced by casting a pulley comprising grooves and rims, in which case the product must be machined. In some cases, this kind of pulley is forged by a closed die forging machine or the like, and then the forged product is finally machined. It is also known that pulley finished products can also be obtained by machining from steel sheets. Sometimes, the pulley forms the groove once in a straight line to form a hospitality, butt welds the hospitality, then the steel plate and hub, or spoke and hub. It can also be finished by welding on the part, which must be machined separately. Some types of pulleys have been manufactured by dividing the periphery with sharp rotating blades. In this prior art, a method of hot rolling a pulley from a metal round plate is not proposed.

The present invention relates to a device for forming a pulley of the type in which an annular groove for hanging a wire line from a metallic circular flat plate (hereinafter, referred to as a "plate") is formed. The size and shape of the finished product will correspond to the diameter of the wire. The disc has an outer diameter slightly larger than the outer diameter of the pulley and two planar side portions (left and right side portions) bilaterally divided by the width of the disc. The device of the present invention includes a set of rotary clamping members capable of rotating on a common horizontal axis, and means for separating and moving the members in a mutual axial direction. The disc is snapped between the members. Each gripping member is provided with a hub portion which is in contact with the opposite gripping member and is concentric with the common horizontal axis, and each gripping member is suitable for being accommodated in the central hole of the disc. The rotatable forming roller may rotate on an axis substantially parallel to the axis of rotation of the sandwiching member, and may move in a direction substantially perpendicular to the horizontal axis of rotation of the sandwiching member and in contact with the outer peripheral surface of the disc. The forming roller portion in contact with the disc has a protrusion corresponding to the size and shape of the groove to be formed. This protrusion comes into contact with the outer circumferential surface of the disc at a position substantially equidistant from the side of the disc. Means for rotating the rotary clamping member for sandwiching the disc in between are provided. Heating means for heating the side plane portion of the disc adjacent to the circumference is also provided. Further, a means for continuously adhering the forming roller to the circumferential surface of the disc is provided while the disc is heated until the groove is formed on the circumferential surface of the disc by the forming roller. A set of side rollers is also provided for contacting the rim portion of the groove when the groove is formed by the forming roller. These side rollers can perform a finishing effect on the rim of the groove. Another feature of the present invention includes a roller for shaping the width portion of the substantially circumferential rim except for a set of annular indentations corresponding to the position of the rim portion of the groove. . Since the roller for shaping the width of the rim is in close contact with the pulley, the rim portion of the groove is accommodated in the annular recess. Thus, the forming roller of the rim width determines the separation and shape of the rim portion as well as the outermost diameter of the pulley. According to another feature of the present invention, there is a starting roller that comes into contact with the circumferential surface of the disc before the forming roller.

According to the accompanying drawings of the subject innovation according to the accompanying drawings as follows.

The material of the pulley according to the present invention is a metal circular flat plate 10 such as a steel sheet having two side planes bisected by each other by the thickness of the disc and having a central hole 12 as shown in the example of FIG. The disc 10 is sandwiched between a set of rotary clamping members 14 and 16 on which two opposite hubs 18 and 20 are fitted which are suitable for subtracting into the central hole 12 of the disc. Suitable for The rotary clamping member 14 is mounted at the right end of the rotary shaft 22, and the other clamping member 16 is mounted at the left end of the rotary shaft 24. There are a number of bearings around the rotary shafts 22 and 24, of which only the bearings 26 are shown for convenience. It is preferable to cool these bearings, for example, the bearing 26. The holding member 14 cannot be moved relatively in the axial direction as described later, but the holding member 16 is operated by the hydraulic cylinder 28 provided at the right end of the device. Direction in the) direction or vice versa. The piston rod 30 protruding from the hydraulic cylinder 28 is connected to the right end of the rotation shaft 24 via a connector 32 including a suitable thrust bearing (not shown). When hydraulic pressure is applied to the hydraulic cylinder 28 and the cylinder is operated, the piston rod 30 pushes the rotary shaft 24 to the left, and thus the disc 10 between the clamping members 14 and 16 as shown. ) Is interposed.

On the left end of the rotating shaft 22, a tightening bearing or a thrust bearing unit 34 including an external spiral sleeve or housing in which the spiral bearing holder is housed is mounted. The bearing 40 is retained in the bearing holder 38. Since the handle 42 is provided on the bearing holder 38, it is possible to rotate the bearing holder in the sleeve 36. When the clamping member 14 reaches a predetermined position, the bearing retainer 38 is also provided with a body screw 44 for tightly attaching the bearing retainer 38 in place with respect to the sleeve and 36. The left end of the rotating shaft 22 is reduced in size at the position of the point 46, and is in contact with the shoulder 48 of the main shaft of the rotating shaft 22. Therefore, the shoulder 48 abuts the bearing 40. The tightening screw 50 is screwed onto the helix of the reduction end 46 of the rotating shaft 22, so that the play of the bearing 40 is reduced, and the auxiliary washer 52 is installed. The tightening screw 52 can be fixed in place. Since the shift drive device (not shown) is connected to the rotary shaft portion 46, the rotary shaft 22 can rotate at any predetermined speed.

1 to 3, the forming rollers 54 are arranged to rotate on an axis (not shown) that is substantially parallel to the common longitudinal axis of rotation of the axes of rotation 22 and 24. As shown in FIGS. The outer circumferential surface of the molding roller 54 is formed with a rounded protrusion 56 corresponding to the size and shape of the groove of the pulley to be molded by the present invention. The size and shape of the grooves thus formed correspond to the diameter of the wire wire to be used for the pulley. The forming roller 54 is suitable to be interlocked with the original plate 10 by a slide 58 having a set of vertical plates 60 attached thereto, the shaft of the forming rollers 54 (not shown). It is suitably connected by this well-known method (not shown). The vertical plate 60 is adjacent to a set of separator plates 62 that form a runway of the vertical plate 60. The hydraulic cylinder 64 is mounted at the end of the separator 62 and connected to the slide 58 through the piston rod 6. Thus, when the hydraulic cylinder 64 is operated by introducing a hydraulic fluid thereto under pressure, the forming roller 54 is brought into substantially equidistant distance from both side portions of the disc 10, i.e., close to the center of the outer circumferential surface of the disc.

As shown in FIG. 6, the branch pipe 68 is installed adjacent to both side parts of the disc 10. As shown in FIG. Multiple heaters 70, in this case five heaters, are connected outwardly from the branch pipe 68 and are capable of emitting flames on both side portions of the disc adjacent to the outer circumferential surface of the disc 10. It is suitable for. In FIG. 6, only one branch pipe 68 and five heaters 70 are shown, but other branch pipes 68 and five heaters 70 are also provided on the opposite side portion adjacent to the circumferential surface of the disc 10. It is to be understood that the opposite side portion of the disc 10 can be heated since it is arranged. In FIG. 6, the five heaters are arranged in the disc 10 when the disc 10 is relatively small in diameter. However, as shown in FIG. 7, in a large disc such as a disc 10 ′, the number of heaters 70 becomes larger, for the purpose of illustration only 10 heaters 70 are discs. Both sides of the disc adjacent to the circumferential surface of (10 ') are shown to be heated. Again, only one branch tube 68 and ten heaters 70 are shown in FIG. 7, but a similar arrangement is also on the opposite side of the disc 10 'shown in FIG.

A predetermined gas or mixture may be burned in the heater 70 to raise the temperature of the circumference of the disc 10 to a glowing temperature that can be deformed by the forming roller 54. Thus, a mixed gas of oxygen and acetylene or other suitable mixture can be used in heater 70.

The heating apparatus of FIGS. 6 or 7 is combined with the apparatus of FIGS. 1, 2 and 3, depending on the size of the disc to be manufactured. However, no structure of FIG. 6 or 7 is shown in these drawings for the purpose of not complicating the illustrations of FIG. 1, FIG. 2, and FIG.

The disc 10 is rotated at a speed necessary to obtain the shape of the desired groove. Changing the rotational speed of the disc above or below the optimum temperature will affect the shaping of the grooves, but can visually determine when the grooves are properly formed. Since the temperature at which the disc 10 is heated also affects the formation of the grooves, it also affects the pressure exerted by the forming roller 54 with respect to the circumferential surface of the disc 10. Thus, an experienced operator can visually determine the time at which the groove is properly formed.

8, 9 and 10, these figures show the continuous operating state of the forming roller 54 in relation to the disc 10. As shown in FIG. By the way, in FIG. 8, the forming roller 54 maintains a fixed distance from the original plate 10. When the original plate 10 is heated at the appropriate time by the heater 70, it reaches | attains a suitable red heat temperature. Heated to When the outer periphery of the disc 10 is heated to an appropriate temperature, the forming roller 54 approaches and comes in contact with the circumferential surface of the disc 10, so that the groove 72 starts to be molded as shown in FIG. If the disc 10 is continuously rotated while continuously heating and applying a continuous force to the forming roller, the groove 72 is formed more completely as shown in FIG. In this figure the outer rim 74 of the groove 72 is clearly shown.

As mentioned above, a set of side rollers 76 is shown in FIGS. 8 to 10, each having an annular recess 78 having a central angle. While it is not considered necessary to use such side rollers 76, these side rollers assist in shaping the groove 72 and rim portion 74 properly. Sometimes, when these rollers 76 are brought closer, arbitrarily narrow rims can be obtained, and if these rollers are adjusted to the final rim width, the grooves 72 can be appropriately formed. The roller 76 is properly coupled to the slide end (90). Each slide 90 (see FIGS. 1 and 2) is moved in the central direction and the opposite direction of the device by means of a hydraulic cylinder 92 connected to the slide via a piston rod 94.

As shown in FIG. 11, in connection with the shaping of the pulley, it may be desirable to add a roller 80 that acts as the width forming roller of the rim and also determines the maximum outer diameter of the rim 74. In any case, the rim forming roller 80 is a mainly flat circumferential shape having two annular recesses 80 corresponding to the position of the rim portion 74. The final rim width forming roller 80 may act along an appropriate path (not shown) between the side plates 62 in substantially the same manner as previously described with respect to the vertical plate 60. To a set of plates 84 that can be suitably combined (the method of joining is not shown). This vertical plate 84 is connected to a slide member (not shown) which is substantially equivalent to the slide member 58 described above, and the slide for the roller 80 is substantially connected to the piston rod 66 as described above. It is operated by a hydraulic cylinder 86 connected with a slide (not shown) for the roller 80 through an equivalent piston rod (not shown).

As indicated in Figures 2 and 3, a starting roller 88 used for engagement with the forming roller 54 is shown. This starting roller comes into contact with the circumferential surface of the disc 10 before the roller 54. The roller 88 may have a shape similar to that of the roller 54, or may be a flatter or sharper shape depending on a given situation condition. The roller 88 is operated in substantially the same way as the roller 54 (not shown).

When the final operation on the disc 10 is completed as shown in FIG. 11, each forming roller is returned to its original position, and the pincer 14 and 16 are separated, and the pulley which is still hot until then is recovered and cooled. After cooling, the hub 96 is fitted into the through hole 12 by welding means or other suitable means to properly adhere to the disc 10.

For large discs, it is preferable to fix them in the form of screws 98 so as to prevent the discs from slipping. The screw 98 is screwed into a suitable hole 100 in the clamping member 14 and fits into the small hole 102 of the disc 10. After the operation shown in FIG. 11 is finished, the small holes 102 can be easily filled if necessary.

The device of the present invention described above can be more easily understood by its typical operation method described below.

A pulley of 20 inches (about 50.8 cm) in diameter to handle a 3/4 inch (about 1.905 cm) wire line is 3.4 inches thick (about 1.905 cm) and 20 1/2 inches (about 52.07 cm) in diameter. It was produced from the metal master as follows. The torch was cut out of the steel sheet using a torch to form a central hole 12 having a diameter of about 6 inches (about 15.24 cm). Subsequently, this disc 10 was sandwiched between the holding members 14 and 16, and this holding member was rotated to about 50 r.p.m. The heater 70 was ignited by supplying a mixture of air and natural gas, and the disc 10 was continuously rotated until the glowing temperature (about 600 ° F. (about 315.6 ° C.)) was reached. At this time, the forming roller 54 was moved to contact the outer circumference of the original plate 10. The outer diameter of the forming roller 54 was 8 inches (about 20.32 cm) with the hydraulic cylinder 64 having an inner diameter of about 23/4 inch (about 6.985 cm). The pressure acting on the hydraulic cylinder 64 is initially about 700 p.s.i to gradually increase to 1,500p.s.i so that the rim portion 74 is completely formed. At this time, the side roller 76 is brought into close contact with the rim portion 74 to complete the rim 74 that has been properly molded. Since the pulley obtained in this way is relatively small in size, the rim width forming roller 80 and the starting roller 88 were not used. After a total of about 12 minutes of heating and shaping, the heaters 70 were turned off and each roller was returned to its original position, and then the clamping member was opened to remove the hot disc and cooled. The outer diameter of the final pulley is 19 7/8 inches (about 50.4825 cm) and the diameter of the bottom of the groove 72 is 3/4 inches (about 1.905 cm), which corresponds to the diameter of the wire to be caught here. . The maximum width of the rim was about 2 1/4 inches (about 5.7145 cm), and the depth of the required portion 72 was about 1 1/8 inch (about 2.8575 cm).

In forming a pulley of a different specification suitable for hanging wires of different specifications, some of the conditions described above must be changed, for example, rotational speed, temperature, pressure, heating and molding time need to be changed.

Although the present invention has been described in accordance with the accompanying drawings, it should be understood that modifications and variations are possible within the principles and scope of the present invention. For example, the disk 10 is not necessarily provided with a central hole 12 to be engaged with the hubs 18 and 20 on the clamping member, but a plurality of screws similar to the screw 98 to be fitted to the clamping member 14. It is possible to provide a large number of small holes (not shown) in the original plate 10 such as small holes 102 that engage with (not shown). It may also be desirable to weld the hub 96 to the disc 10 prior to groove forming, in which case the disc 10 may be provided with suitable openings or requirements in each of the clamping members 14 and 16. It is sandwiched between the holding member 14 and 16 by the side of the hub 96 accommodated in (not shown). Another method may be provided for securing and sandwiching the disc between the gripping members 14 and 16.

Claims (1)

In the apparatus for shaping a pulley from a circular metal plate (circle) having a constant thickness (width), one clamping member 14 for clamping the (disc) 10 is a rotating shaft connected to a fixed rotation drive device. The other clamping member 16 is installed at the left end of the rotating shaft 24 which can be moved to the left and right by connecting the hydraulic cylinder 28 via the piston rod 30 to the right end of the 22. In addition, the horizontal forming roller 54 is formed with a projection 56 having a size and shape corresponding to the groove portion 72 to be formed on the outer circumferential surface of the disc 10 and the horizontal axis of the rotary shafts 22 and 24; Arranged on a parallel axis, the rotary forming roller 54 is in close contact with the central portion of the outer peripheral surface of the disc 10 by a slide 58 connected to the hydraulic cylinder 64 via the piston rod 66, Branch pipes 68 are respectively provided at adjacent portions of the circumferential surfaces of the left and right sides of the disc 10. And a plurality of heaters (70) connected outwardly from each other.