Ring mill device having interchangeable insert rolls

Abstract

The present invention relates to a ring mill main roll device having a replaceable insert roll, comprising: a core die unit having a roll shaft that is spaced apart from a rotating ring-shaped metal member and rotates around a rotation axis in the same direction as the rotation axis of the ring-shaped metal member, and a roll boss formed in a shape that surrounds the roll shaft; at least one insert roll die arranged along the circumferential direction in a shape that surrounds the roll boss and is configured to be detachably attached to the roll boss and presses the outer surface of the ring-shaped metal member; and at least one clamp unit arranged along the circumferential direction in a shape that surrounds the roll boss and is detachably coupled to the roll boss, wherein, upon coupling, the insert roll die is pressed to be in close contact with the roll boss and fixed in position.

Description

Technology Field

[0001] The present invention relates to a ring mill main roll device equipped with a replaceable insert roll, and more specifically, to a ring mill main roll device equipped with a replaceable insert roll having an improved structure that eliminates the need to replace the main roll that pressurizes a metal material during the ring mill process and increases the operational efficiency of the ring mill process. Background Technology

[0002] Generally, the ring mill process is a process of processing a large ring-shaped metal material with a square or rectangular cross-section to a predetermined thickness to enlarge the diameter of the ring. Large ring products include not only rings in the general sense but also races, flanges, or rock plates. While ring products may have a square or rectangular cross-section, most are irregular rings with complex irregular outer or inner cross-sections. To produce such irregular ring products, a ring with a square cross-section is first obtained using a general press device, and the outer diameter of the obtained ring is rolled with a main roll to enlarge the diameter of the ring.

[0003] Referring to FIG. 1, a conventional ring mill device includes a mandrel (2) that contacts and supports the inner surface of a heated ring-shaped metal material (W), and a main roll (4) that presses the outer surface of the ring-shaped metal material (W) to form the thickness and outer diameter shape of the ring-shaped metal material (W). Both the mandrel (2) and the main roll (4) rotate, and the ring-shaped metal material (W) also rotates in place. Additionally, the conventional ring mill device further comprises an upper axial roll (5a) and a lower axial roll (5b) that support and smooth the upper and lower surfaces of the rotating ring-shaped metal material (W).

[0004] In such conventional ring mill devices, when the main roll, which adheres to and processes the outer surface of a ring-shaped metal material, wears out, the entire main roll must be replaced repeatedly, and the ring mill device must be disassembled to replace the main roll. Furthermore, conventional ring mill devices have the problem of reducing work efficiency and lowering product productivity during the ring mill process due to the repeated replacement of the main roll.

[0005] Prior art is Published Patent Application No. 10-2009-0007309. The problem to be solved

[0006] The present invention has been devised to solve the aforementioned problems. The objective of the present invention is to provide a ring mill main roll device equipped with a replaceable insert roll, which eliminates the need for repeated complete replacement of the main roll upon wear and the need for disassembly of the ring mill device to replace the main roll, and enables the reduction of working time while improving work efficiency during the execution of the ring mill process, as well as increasing product productivity.

[0007] The problems solved by the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0008] A ring mill main roll device having a replaceable insert roll according to the present invention for achieving the above objective comprises: a core mold unit having a roll shaft that is spaced apart from a rotating ring-shaped metal member and rotates around a rotation axis in the same direction as the rotation axis of the ring-shaped metal member, and a roll boss formed in a shape that surrounds the roll shaft; at least one insert roll mold arranged along the circumferential direction in a shape that surrounds the roll boss and configured to be detachably attached to the roll boss, and which presses the outer surface of the ring-shaped metal member; and at least one clamp unit arranged along the circumferential direction in a shape that surrounds the roll boss and is detachably coupled to the roll boss, wherein, upon coupling, the insert roll mold is pressed to be in close contact with the roll boss and fixed in position.

[0009] It is preferable that the roll boss of the core mold unit has a fitting groove portion that inserts the insert roll mold and exposes the contact surface of the insert roll mold, which contacts the ring-shaped metal material, to the outside.

[0010] The above-mentioned fitting groove may include an extension groove on the upper side that communicates with the space where the clamp unit is inserted and the insert roll mold is positioned, and may have a rib insertion groove formed on the lower side opposite the extension groove into which a first protruding rib formed protruding from the lower edge of the insert roll mold is inserted.

[0011] It is preferable that the clamp unit includes a pressure insertion groove portion that is fastened to the roll boss while inserted into the extension groove, inserts a second protruding rib formed protruding from the upper edge of the insert roll mold, and forms a catch projection on which the second protruding rib engages, thereby pressing the second protruding rib and ensuring close contact with the roll boss during the process of fastening to the roll boss.

[0012] The present invention may further include a key block provided between the insert mold and the roll boss to prevent the insert mold from rotating arbitrarily on the roll boss, wherein one side is coupled to the roll boss and the other side is formed to protrude from the one side and is fitted into a fixing groove provided on the inner side of the insert mold facing the roll boss. Effects of the invention

[0013] A ring mill main roll device equipped with a replaceable insert roll according to the present invention having the configuration described above is configured such that the insert roll mold is arranged along the circumferential direction in a manner that surrounds the roll boss of a core mold unit and enables ring mill processing by pressing the outer surface of a ring-shaped metal material, and the clamp unit is arranged along the circumferential direction in a manner that surrounds the roll boss and is detachably coupled to the roll boss, and in the coupling process, the insert roll mold is pressed to adhere to the roll boss and fixed in position, thereby enabling easy replacement of the insert roll mold that is worn or damaged during the ring mill process, thereby eliminating the need for repeated complete replacement of the main roll when it wears out for the ring mill process and eliminating the need for disassembly of the ring mill device for main roll replacement, and has the effect of improving work efficiency and shortening working time during the performance of the ring mill process, as well as increasing product productivity.

[0014] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description below. Brief explanation of the drawing

[0015] FIG. 1 is a drawing for explaining a conventional ring mill device. FIG. 2 is a drawing illustrating a state in which a ring mill process is performed by a ring mill main roll device equipped with a replaceable insert roll according to an embodiment of the present invention. FIG. 3 is a perspective view for illustrating an embodiment of the present invention. FIG. 4 is a drawing illustrating the separated state of an embodiment of the present invention. FIG. 5 is a drawing for explaining the coupling relationship between a core mold unit and an insert mold employed in an embodiment of the present invention. FIG. 6 is a drawing for explaining a key block employed in an embodiment of the present invention. Specific details for implementing the invention

[0016] In order to clarify the understanding of the present invention in the following description, descriptions of known technologies regarding the features of the present invention will be omitted. The following embodiments are detailed descriptions to aid in understanding the present invention and are not intended to limit the scope of the rights of the present invention. Accordingly, equivalent inventions that perform the same function as the present invention will also fall within the scope of the rights of the present invention.

[0017] Furthermore, in the following description, identical identification symbols denote identical configurations, and unnecessary redundant descriptions and descriptions of known technologies are omitted. Additionally, descriptions of each embodiment of the present invention below that overlap with the description of the technology forming the background of the invention are also omitted.

[0018] Hereinafter, a ring mill main roll device equipped with a replaceable insert roll according to an embodiment of the present invention will be described in detail with reference to the attached drawings.

[0019] FIG. 2 is a drawing illustrating a state in which a ring mill process is performed by a ring mill main roll device equipped with a replaceable insert roll according to an embodiment of the present invention, FIG. 3 is a perspective view for explaining an embodiment of the present invention, FIG. 4 is a drawing illustrating a separated state of an embodiment of the present invention, FIG. 5 is a drawing for explaining the coupling relationship between a core mold unit and an insert roll mold employed in an embodiment of the present invention, and FIG. 6 is a drawing for explaining a key block employed in an embodiment of the present invention.

[0020] As illustrated in these drawings, a ring mill main roll device having a replaceable insert roll according to one embodiment of the present invention is configured to press the outer side of a ring-shaped metal material (W) and process the outer side, and comprises a core mold unit (100), an insert roll mold (200), and a clamp unit (300).

[0021] As shown in FIG. 2, the core mold unit (100) is configured with a roll shaft (110) and a roll boss (120) to support an insert mold (200) and is positioned spaced apart from a ring-shaped metal material (W) that rotates by being fitted onto a mandrel (M). The roll shaft (110) of the core mold unit (100) is positioned spaced apart from the rotating ring-shaped metal material (W) and rotates around a rotation axis in the same direction as the rotation axis of the ring-shaped metal material (W), and is coupled to the roll boss (120) to enable rotation of the roll boss and the insert mold (200).

[0022] The roll boss (120) of the core mold unit (100) is formed such that the roll shaft (110) passes through the center and surrounds the roll shaft (110). The roll boss (120) can be connected to the roll shaft (110) in various ways and is connected to the insert roll mold (200) and clamp unit (300), thereby enabling the insert roll mold (200) and clamp unit (300) to rotate when the roll shaft (110) rotates.

[0023] As shown in FIGS. 2 to 4, the above insert mold (200) may be made up of multiple units and arranged along the circumferential direction in a manner that surrounds the roll boss (120) of the core mold unit (100), and each is configured to be detachably attached to the roll boss (120). The above insert mold (200) contacts the outer surface of the ring-shaped metal material (W) while attached to the roll boss (120) and presses the outer surface, thereby enabling the formation of the outer shape of the ring-shaped metal material (W).

[0024] The above insert roll mold (200) can be attached to and detached from the roll boss (120) by means of a clamp unit (300), and can be replaced after being separated from the roll boss in the event of wear or damage during the process of machining the ring-shaped metal material (W) during the ring mill process, thereby making it unnecessary to replace the entire ring mill main roll in the event of wear or damage to the ring mill main roll during the ring mill process, and preventing an increase in working time due to the replacement of the ring mill main roll.

[0025] As shown in FIGS. 3 and 4, the clamp unit (300) is arranged along the circumferential direction in a manner that surrounds the roll boss (120) and is detachably coupled to the roll boss (120). When coupled, it presses the insert roll mold (200) to press against the roll boss and fixes its position. The clamp unit (300) can be coupled to the roll boss (120) by a bolt coupling method, and by allowing the insert roll mold (200) to be separated from the roll boss when separated from the roll boss (120), it enables easy replacement in case of wear or damage to the insert roll mold and increases work efficiency.

[0026] A ring mill main roll device equipped with a replaceable insert roll according to an embodiment of the present invention having such a configuration, wherein the insert roll mold (200) is arranged along the circumferential direction in a manner that surrounds the roll boss (120) of the core mold unit (100) and enables ring mill processing by pressing the outer surface of a ring-shaped metal material (W), and the clamp unit (300) is arranged along the circumferential direction in a manner that surrounds the roll boss and is detachably coupled to the roll boss, and during the coupling process, the insert roll mold (200) is pressed to adhere to the roll boss (120) and fixed in position, thereby enabling easy replacement of the insert roll mold (200) that is worn or damaged, thereby eliminating the need for repeated complete replacement of the main roll when the main roll for the ring mill process is worn, eliminating the need for disassembly of the ring mill device for main roll replacement, and improving work efficiency and enabling a reduction in working time during the performance of the ring mill process, as well as having the effect of increasing product productivity.

[0027] Meanwhile, the roll boss (120) of the core mold unit (100) may be formed to include the fitting groove (121) as shown in FIGS. 5 and 6. The fitting groove (121) of the roll boss (120) is formed in a groove shape at a position corresponding to the insert roll mold (200), and by allowing the insert roll mold (200) to be inserted and the contact surface (201) of the insert roll mold (200) that contacts the ring-shaped metal material (W) to be exposed to the outside, the structure of the ring mill main roll according to the present embodiment can be made compact and stable connection between the insert roll mold (200) and the roll boss (120) can be made possible.

[0028] Here, as shown in FIGS. 4 and 5, the insert roll mold (200) may have a first protruding rib (210) on the lower edge portion and a second protruding rib (220) on the upper edge portion opposite the lower edge portion. The first protruding rib (210) and the second protruding rib (220) are formed protruding from the lower edge portion and the upper edge portion, respectively, and enable the maintenance of a bonding force between the roll boss (120) of the core mold unit (100) and the clamp unit (300).

[0029] Additionally, it is preferable that the fitting groove (121) of the roll boss (120) comprises an extension groove (121a) and a rib insertion groove (121b). The extension groove (121a) of the fitting groove (121) is provided on the upper side of the fitting groove (121) and communicates with the space where the insert roll mold (200) is placed, allowing the clamp unit (300) to be inserted. At this time, the clamp unit (300) is detachably coupled to the roll boss (120) while inserted into the extension groove (121a), thereby allowing the insert roll mold (200) to be maintained in the fitting groove (121).

[0030] The rib insertion groove (121b) of the above-mentioned fitting groove (121) is formed on the lower side opposite the above-mentioned extension groove (121a), and by allowing the first protruding rib (210) of the insert roll mold (200) inserted into the above-mentioned fitting groove (121) to be inserted, the lower side of the insert roll mold (200) in the above-mentioned fitting groove (121) can be connected to the roll boss (120).

[0031] As shown in FIGS. 5 and 6, the clamp unit (300) is preferably formed to be connected to the roll boss (120) while inserted into the extension groove (121a) and to include a pressure insertion groove (301) so that the upper side of the insert roll mold (200) can be connected to the roll boss (120). The pressure insertion groove (301) of the clamp unit inserts the second protruding rib (220) formed protruding from the upper edge of the insert roll mold (200) and forms a clamping projection on which the second protruding rib (220) catches, thereby pressing the second protruding rib (220) and making it close to the roll boss during the process of the clamp unit (300) being connected to the roll boss (120).

[0032] In this way, the present embodiment allows the insert roll mold (200) to be inserted into the fitting groove (121) of the roll boss (120), and the first protruding rib (210) of the insert roll mold (200) to be inserted into the rib insertion groove (121b) formed on the lower side of the fitting groove (121). A clamp unit (300) is inserted into the extension groove (121a) of the fitting groove, and the second protruding rib (220) of the insert roll mold (200) is inserted into the pressure insertion groove (301) of the clamp unit (300) and pressed by the pressure insertion groove and in close contact with the roll boss (120), thereby enabling stable connection between the roll boss (120) and the insert roll mold (200) and enabling a smooth ring mill process for the ring-shaped metal material (W).

[0033] In addition, as illustrated in FIGS. 5 and 6, it is preferable that the present embodiment further includes a key block (400). The key block (400) is provided between the insert roll mold (200) and the roll boss (120), one side of which is connected to the roll boss (120) by means of a bolt connection or the like, and the other side is formed to protrude from the one side. The key block (400) is fitted into a fixing groove (202) provided on the inner side of the insert roll mold (200) facing the roll boss (120), thereby preventing the insert roll mold (200), which is connected to the roll boss (120) by the clamp unit (300), from rotating arbitrarily on the roll boss and preventing defects from occurring during the product manufacturing process.

[0034] The key block (400) is formed to be long in the direction from the upper side to the lower side of the roll boss (120) and is fitted into the fixing groove (202), thereby allowing the insert roll mold (200) to rotate together with the core mold unit (100) when the core mold unit (100) rotates.

[0035] The fitting groove portion (121) of the above-mentioned roll boss (120) may be formed to include a key insertion groove (122) into which one side of the key block (400) is inserted so that one side of the key block can be more effectively coupled. The key insertion groove (122) is formed in the fitting groove portion (121), and the key insertion groove has an inner shape corresponding to the shape of one side, thereby enabling the key block to be effectively coupled to the roll boss.

[0036] Although various embodiments of the present invention have been described above, these embodiments and the drawings attached to this specification merely clearly illustrate a part of the technical concept included in the present invention. It is obvious that variations and specific embodiments that can be easily deduced by a person skilled in the art within the scope of the technical concept included in the specification and drawings of the present invention are all included within the scope of the rights of the present invention. Explanation of the symbols

[0037] W: Ring-shaped metal M: Mandrel 100: Core die unit 110: Roll shaft 120: Rollboss 121: Kkiumhomebu 121a: Extension groove 121b: Rib insertion groove 200: Insert mold 201: Contact surface 202: Fixed groove 210: 1st protruding rib 220: Second protruding rib 300: Clamp unit 301: Pressure insertion groove 400: Key block

Claims

Claim 1 A core die unit comprising a roll shaft spaced apart from a rotating ring-shaped metal member and rotating around a rotation axis in the same direction as the rotation axis of the ring-shaped metal member, and a roll boss formed in a shape that surrounds the roll shaft; at least one insert roll die arranged along the circumferential direction in a shape that surrounds the roll boss, configured to be detachably attached to the roll boss, and pressing the outer surface of the ring-shaped metal member; and, comprising at least one clamp unit arranged along the circumferential direction in a manner that surrounds the roll boss and is detachably coupled to the roll boss, wherein, upon coupling, the insert roll mold is pressed against the roll boss and fixed in position; wherein the roll boss of the core mold unit is provided with a fitting groove portion that inserts the insert roll mold and exposes the contact surface of the insert roll mold that contacts the ring-shaped metal material to the outside, and wherein, to enable stable binding between the roll boss and the insert roll mold, the fitting groove portion includes an extension groove on the upper side that communicates with the space where the clamp unit is inserted and the insert roll mold is positioned, and a rib insertion groove formed on the lower side opposite the extension groove into which a first protruding rib formed protruding from the lower edge of the insert roll mold is inserted; wherein the clamp unit is fastened to the roll boss while inserted into the extension groove and on the upper edge of the insert roll mold A ring mill main roll device having a replaceable insert roll comprising a pressure insertion groove portion that inserts a second protruding rib formed protrudingly and forms a catch projection on which the second protruding rib catches, thereby pressing the second protruding rib and making it close to the roll boss during the process of fastening to the roll boss, wherein the first protruding rib and the second protruding rib are each extended in opposite directions from the lower edge and the upper edge, respectively, and the pressure insertion groove portion is arranged to face the rib insertion groove when the clamp unit is inserted into the extension groove and is formed as a groove structure facing in the opposite direction to the rib insertion groove. Claim 2 delete Claim 3 delete Claim 4 A ring mill main roll device having a replaceable insert roll, further comprising: a key block provided between the insert roll mold and the roll boss so as to prevent the insert roll mold from rotating arbitrarily on the roll boss, wherein one side is coupled to the roll boss and the other side is formed to protrude from the one side and is fitted into a fixing groove provided on the inner side of the insert roll mold facing the roll boss.

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