Combined die structure of a vertical ring rolling mill

Abstract

The utility model relates to vertical type ring rolling mill technical field, and disclose a kind of combined die structure of vertical type ring rolling mill, including ring die, and installation hole is passed through and established between the two side wall surfaces of ring die front and back, the vice die, the vice die sleeve is set in the outer wall of ring die, and the die shape groove is established in the outer wall surface of vice die, connecting component, the connecting component includes snap groove and snap block. Through the installation hole passed through and established in the two side wall surfaces of ring die front and back, the ring die can be accurately fixed with ring rolling mill host by fastener, prevent the radial or axial displacement of ring die in ring rolling process, while the vice die is sleeved in the outer wall of ring die, the die shape groove matching the profile of workpiece to be processed is established in the outer wall of vice die, and the vice die can be individually replaced according to workpiece specification, without replacing entire die set, shorten the die replacement time when workpiece is changed.

Description

Technical Field

[0001] This utility model relates to the field of vertical ring rolling mill technology, and in particular to a combined mold structure for a vertical ring rolling mill. Background Technology

[0002] The combined mold of a vertical ring rolling mill is the core functional component for processing ring-shaped metal workpieces, such as bearing rings and flange rings. It consists of multiple detachable modules that work together. It typically includes a base mold providing basic support and installation reference, a forming sub-mold that directly contacts the workpiece and defines its forming contour, and auxiliary structures that connect and fix the modules. Its core function is to transmit the pressure output from the ring rolling mill to the metal billet through cooperation with the drive rollers, core rollers, and other structures of the mold, causing the billet to gradually deform into a ring-shaped workpiece that meets specifications within the cavity defined by the mold.

[0003] For example, utility model application CN202120295202.9 discloses a combined mold structure for a vertical rolling mill for titanium alloy irregular rings. It includes a rolling roller, a left mold clamping plate and a right mold clamping plate fitted onto the rolling roller. The left mold clamping plate is limited by a shoulder on its left side. A nut end cap and a locking nut to prevent the nut end cap from loosening are threaded onto the end of the rolling roller on the right side of the right mold clamping plate. An irregular ring combined mold for forming titanium alloy irregular rings is fitted onto the rolling roller between the left and right mold clamping plates. The irregular ring combined mold is composed of multiple modules with different outer diameters, different outer ring surface structures, and different thicknesses, based on the structure of the irregular outer ring surface of the irregular ring. The modules of this utility model can be arbitrarily combined according to the structure of the irregular ring product, adapting to the manufacturing of various products. It has a simple structure, is easy to manufacture, and has stronger versatility.

[0004] In the existing technology, the forming die sleeve and the main die body are only pressed and fixed by the annular pressure plates at the upper and lower ends. Radial positioning relies only on the cooperation of rectangular slots and rectangular strips. When the forming die sleeve is subjected to radial extrusion force from the blank during the rolling process, stress concentration is easily generated in the middle due to the pressure at both ends and the lack of support in the middle. After long-term use, the forming die sleeve is prone to deformation or cracking in the middle, which affects the service life of the die and the machining accuracy of the workpiece.

[0005] Therefore, this application proposes a combined mold structure for a vertical ring rolling mill. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a combined mold structure for a vertical ring rolling mill, which solves the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A combined mold structure for a vertical ring rolling mill includes: a circular ring mold, wherein the circular ring mold is annular and has mounting holes extending through between its front and rear side walls; a secondary mold, wherein the secondary mold is annular and is fitted onto the outer wall of the circular ring mold, and has mold grooves on its outer wall; and a connecting assembly, wherein the connecting assembly is disposed on one side of the circular ring mold and the secondary mold, and is used to limit and fix the secondary mold. The connecting assembly includes engaging grooves and engaging blocks, the number of engaging grooves and engaging blocks being one-to-one, multiple sets of engaging grooves being fixed on one side of the circular ring mold, and one end of multiple sets of engaging blocks being fixed on one side of the secondary mold. The engaging blocks are T-shaped and are movably engaged with the engaging grooves.

[0008] According to the combined mold structure of the vertical ring rolling mill, multiple sets of the locking grooves are fixed on one side of the ring mold, and the multiple sets of locking grooves are distributed in a ring array. The locking grooves are rectangular frames with notches, and the locking blocks are T-shaped. The T-shaped ends of the locking blocks are locked in the corresponding locking grooves.

[0009] According to the combined mold structure of the vertical ring rolling mill, the outer walls on both sides of the locking groove are fixed with fixing piles, and a baffle is attached to and covered on one side of the locking groove and the locking block. Bolts are provided between the two ends of the baffle and the fixing piles, and the bolts move through the baffle and are threadedly connected to the fixing piles.

[0010] According to the combined mold structure of the vertical ring rolling mill, a convex ring is provided at the rear end of the outer wall of the ring mold, and the outer wall surface of the convex ring is provided with protrusions distributed in a ring array.

[0011] According to the combined mold structure of the vertical ring rolling mill, a limiting groove is opened at the rear end of the inner wall of the auxiliary mold, and grooves distributed in a ring array are opened through the inner wall surface of the limiting groove.

[0012] According to the combined mold structure of the vertical ring rolling mill, the number of grooves and protrusions corresponds one-to-one, and the grooves and corresponding protrusions are movably engaged.

[0013] This utility model provides a combined mold structure for a vertical ring rolling mill. It has the following beneficial effects: (1) By opening mounting holes through the front and rear side walls of the ring mold, the ring mold and the main machine of the ring rolling mill can be precisely fixed with fasteners to prevent the ring mold from radial or axial displacement during the ring rolling process, thus providing a stable foundation for workpiece processing. At the same time, the auxiliary mold is fitted on the outer wall of the ring mold. The outer wall of the auxiliary mold is opened with a mold groove that matches the contour of the workpiece to be processed. The auxiliary mold can be replaced separately according to the workpiece specifications without replacing the entire mold group. This design not only ensures the shape accuracy of the workpiece after forming through the mold groove and reduces the subsequent processing allowance, but also reduces the mold purchase and maintenance costs, shortens the mold replacement time when changing the workpiece shape, effectively improves production efficiency, and meets the processing needs of ring workpieces of different specifications.

[0014] (2) By setting up a connecting component consisting of a locking groove, locking block, fixing pile, baffle and bolt, the locking groove and locking block correspond one-to-one and are movable and locked, ensuring accurate alignment when assembling the ring mold and the sub-mold, reducing assembly difficulty; multiple sets of locking grooves are distributed in a ring array, so that the connection between the two is uniformly stressed, avoiding local stress concentration that could cause the locking groove or locking block to break, and improving the structural reliability of the connecting component; the baffle fits and covers the locking groove and locking block, and the bolt passes through the baffle and is threadedly connected to the fixing pile, forming a secondary fastening structure, which can offset the ring rolling vibration and prevent the locking block from loosening, ensuring the overall rigidity of the mold. At the same time, the convex ring at the rear end of the outer wall of the ring mold and the limiting groove on the inner wall of the sub-mold cooperate, and the convex block on the convex ring and the groove in the limiting groove correspond one-to-one and lock, limiting the radial relative displacement and circumferential rotation of the two, ensuring the coaxiality of the mold, reducing the problem of uneven workpiece wall thickness and roundness deviation, further improving the workpiece processing accuracy, and extending the service life of the mold. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a combined mold structure for a vertical ring rolling mill according to this utility model; Figure 2 This is a side view of the combined mold structure of a vertical ring rolling mill according to this utility model; Figure 3 This is a rear view of the combined mold structure of a vertical ring rolling mill according to this utility model; Figure 4 This is a three-dimensional structural diagram of a circular ring mold for a vertical ring rolling mill according to the present invention. Figure 5 This is a three-dimensional structural diagram of the auxiliary mold of a combined mold structure for a vertical ring rolling mill according to this utility model; Figure 6 This is a rear view schematic diagram of the auxiliary mold of the combined mold structure of a vertical ring rolling mill according to this utility model.

[0016] Legend: 10. Circular mold; 11. Mounting hole; 12. Sub-mold; 13. Connecting component; 14. Engaging groove; 15. Fixing post; 16. Baffle; 17. Bolt; 18. Engaging block; 19. Mold groove; 20. Protruding ring; 21. Protrusion; 22. Limiting groove; 23. Groove. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0018] Please see Figure 1-6As shown, this utility model is a combined mold structure for a vertical ring rolling mill, including a circular ring mold 10, which is annular in shape, with mounting holes 11 extending through the front and rear side walls; and a secondary mold 12, which is also annular and fitted onto the outer wall of the circular ring mold 10, with mold grooves 19 formed on its outer wall. The mounting holes 11 ensure precise fixing of the circular ring mold 10 to the main body of the ring rolling mill, preventing radial or axial displacement of the circular ring mold 10 during the ring rolling process, ensuring positional accuracy of the workpiece during processing, reducing workpiece dimensional deviations, and allowing for flexible replacement of the secondary mold 12 according to workpiece needs without replacing the entire mold assembly, thus reducing mold procurement and maintenance costs, shortening mold changeover time during workpiece changeovers, and improving production efficiency.

[0019] like Figure 2 , Figure 4 and Figure 5 As shown, the connecting component 13 is located on one side of the annular mold 10 and the secondary mold 12, and is used to limit and fix the secondary mold 12. Compared with the traditional integrated mold, it not only facilitates the disassembly, assembly, maintenance and repair of the mold, but also allows for the individual replacement of the secondary mold 12 for different workpiece specifications. The connecting component 13 includes a locking groove 14 and a locking block 18. The number of locking grooves 14 and locking blocks 18 are one-to-one. Multiple sets of locking grooves 14 are fixed on one side of the annular mold 10, and one end of multiple sets of locking blocks 18 is fixed on one side of the secondary mold 12. The locking blocks 18 are T-shaped and are movably locked with the locking grooves 14. The one-to-one correspondence design of the locking grooves 14 and locking blocks 18 ensures precise alignment during the assembly of the annular mold 10 and the secondary mold 12, reduces the assembly difficulty and assembly time.

[0020] like Figure 3 and Figure 4 As shown, multiple sets of engaging grooves 14 are fixed to one side of the annular mold 10, and the multiple sets of engaging grooves 14 are distributed in a ring array. The engaging grooves 14 are rectangular frames with notches, and the engaging blocks 18 are T-shaped. The T-shaped ends of the engaging blocks 18 engage in the corresponding engaging grooves 14. Fixing posts 15 are fixed to both outer walls of the engaging grooves 14. A baffle 16 is attached to and covers one side of the engaging grooves 14 and the engaging blocks 18. Bolts 17 are provided between the two ends of the baffle 16 and the fixing posts 15. The bolts 17 movably pass through the baffle 16 and are threadedly connected to the fixing posts 15. By setting up a ring array of multiple sets of locking grooves 14, the connection between the ring mold 10 and the auxiliary mold 12 is subjected to uniform force, avoiding local stress concentration that could lead to breakage of the locking groove 14 or locking block 18. This improves the structural reliability of the connecting component 13 and extends its service life. The cooperation of the fixing pile 15, the baffle 16 and the bolt 17 forms a secondary fastening structure between the locking groove 14 and the locking block 18, which can effectively offset the vibration during the ring rolling process, prevent the locking block 18 from loosening in the locking groove 14, ensure the overall rigidity of the mold assembly, and further improve the workpiece processing accuracy.

[0021] like Figure 4 and Figure 6 As shown, a convex ring 20 is provided at the rear end of the outer wall of the annular mold 10, and protrusions 21 arranged in a ring array are provided on the outer wall surface of the convex ring 20. A limiting groove 22 is provided at the rear end of the inner wall of the auxiliary mold 12, and grooves 23 arranged in a ring array are provided through the inner wall surface of the limiting groove 22. The number of grooves 23 corresponds one-to-one with the number of protrusions 21, and the grooves 23 are movably engaged with the corresponding protrusions 21. By setting the cooperation between the convex ring 20 and the limiting groove 22, the radial relative displacement between the annular mold 10 and the auxiliary mold 12 is limited, avoiding radial deviation of the mold during the ring rolling process, ensuring the coaxiality of the mold, and thus reducing the problem of uneven workpiece wall thickness. The ring array distribution of the protrusions 21 and the grooves 23 makes the positioning points evenly distributed, avoiding local overtight positioning that could cause mold deformation. At the same time, during assembly, it is only necessary to align the protrusions 21 with the grooves 23 to quickly complete the positioning, improving the mold assembly efficiency.

[0022] The implementation principle of the combined mold structure of the vertical ring rolling mill of this utility model is as follows: First, the ring mold 10 is moved to the designated installation position on the vertical ring rolling mill. Using the mounting holes 11 through the front and rear side walls of the ring mold 10, the ring mold 10 is precisely connected to the main frame or drive structure of the ring rolling mill using bolts or other fasteners. During this process, the positioning function of the mounting holes 11 ensures that the ring mold 10 will not experience radial or axial displacement during subsequent processing, laying a stable foundation for the assembly of the secondary mold 12 and the processing of the workpiece, and preventing dimensional deviations in the subsequent workpiece due to misalignment of the ring mold 10.

[0023] Next, a secondary mold 12 with a limiting groove 22 and a recess 23 on its inner wall and a mold groove 19 matching the workpiece contour on its outer wall is selected and fitted onto the outer wall of the ring mold 10. During the fitting process, the protrusion 21 on the rear end protruding ring 20 of the outer wall of the ring mold 10 needs to be aligned with the recess 23 on the inner wall of the limiting groove 22 of the secondary mold 12, so that the protrusion 21 is fully engaged in the corresponding recess 23. The two cooperate to restrict the radial relative displacement and circumferential rotation of the ring mold 10 and the secondary mold 12, thus completing the initial positioning. At the same time, ensure that the T-shaped locking block 18 fixed on one side of the secondary mold 12 is precisely aligned with the locking groove 14 on the corresponding side of the ring mold 10. The T-shaped end of the locking block 18 is inserted into the locking groove 14 along the notch of the locking groove 14, forming the initial locking and fixing of the secondary mold 12 and the ring mold 10. At this time, the one-to-one correspondence design of the locking groove 14 and the locking block 18 can reduce the assembly difficulty and quickly complete the coaxiality calibration of the two.

[0024] Finally, the mold assembly is reinforced and the ring rolling process is initiated. After the secondary mold 12 and the ring mold 10 are initially assembled, the operator takes the baffle 16 and places it against one side of the engaging groove 14 and engaging block 18, aligning the two ends of the baffle 16 with the fixing posts 15 fixed to the outer walls of the engaging groove 14. Then, the bolt 17 is inserted through the pre-drilled hole in the baffle 16 and threaded into the threaded hole inside the fixing post 15. The bolt 17 is tightened until the baffle 16 tightly presses against the engaging groove 14 and engaging block 18, forming a secondary fastening structure. This structure can counteract the vibration during the ring rolling process, prevent the engaging block 18 from loosening in the engaging groove 14, and ensure the overall rigidity of the mold assembly. After all assembly is completed, the operator checks whether the connection parts of the mold are firm, whether the protrusion 21 and the groove 23 are fully engaged, and whether the mold groove 19 is intact. After confirming that everything is correct, the vertical ring rolling machine is started. The ring rolling machine drives the mold to run. The metal billet to be processed is gradually formed into a ring workpiece that meets the specifications under pressure in the mold groove 19. At the same time, due to the positioning and fixing function of each part of the mold, the positional accuracy, roundness and wall thickness uniformity of the workpiece can be effectively guaranteed.

[0025] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A combined mold structure for a vertical ring rolling mill, characterized in that, include: A circular mold (10) is circular in shape, and an installation hole (11) is provided between the front and rear side walls of the circular mold (10). Sub-mold (12), the sub-mold (12) is circular, the sub-mold (12) is sleeved on the outer wall of the circular mold (10), and the outer wall surface of the sub-mold (12) is provided with a mold groove (19). The connecting component (13) is set on one side of the annular mold (10) and the sub-mold (12) for limiting and fixing the sub-mold (12). The connecting component (13) includes a locking groove (14) and a locking block (18). The number of locking grooves (14) and locking blocks (18) corresponds one-to-one. Multiple sets of locking grooves (14) are fixed on one side of the annular mold (10), and one end of multiple sets of locking blocks (18) is fixed on one side of the sub-mold (12). The locking blocks (18) are T-shaped and are movably locked with the locking grooves (14).

2. The combined mold structure of the vertical ring rolling mill according to claim 1, characterized in that: Multiple sets of engagement grooves (14) are fixed on one side of the annular mold (10), and the multiple sets of engagement grooves (14) are arranged in a ring array. The engagement grooves (14) are rectangular frames with notches, and the engagement blocks (18) are T-shaped. The T-shaped ends of the engagement blocks (18) are engaged in the corresponding engagement grooves (14).

3. The combined mold structure of the vertical ring rolling mill according to claim 2, characterized in that: The outer walls of both sides of the locking groove (14) are fixed with fixing piles (15). The locking groove (14) and the locking block (18) are covered with a baffle (16) on one side. Bolts (17) are provided between the two ends of the baffle (16) and the fixing piles (15). The bolts (17) move through the baffle (16) and are threadedly connected to the fixing piles (15).

4. The combined mold structure of the vertical ring rolling mill according to claim 1, characterized in that: The outer rear end of the ring mold (10) is provided with a protruding ring (20), and the outer wall surface of the protruding ring (20) is provided with protrusions (21) arranged in a ring array.

5. The combined mold structure of the vertical ring rolling mill according to claim 1, characterized in that: The inner wall of the sub-mold (12) has a limiting groove (22) at the rear end, and the inner wall of the limiting groove (22) has grooves (23) arranged in a ring array.

6. The combined mold structure of the vertical ring rolling mill according to claim 5, characterized in that: The number of grooves (23) and protrusions (21) are in one-to-one correspondence, and the grooves (23) and the corresponding protrusions (21) are movably engaged.

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