Multi-specification split type shared hub spinning die

Abstract

The invention relates to a multi-specification split type shared hub spinning die. The device comprises a lower die structure, the lower die structure comprises a lower die base, a split lower die lower section detachably connected with the lower die base and a split lower die upper section detachably connected with the split lower die lower section, and during spinning, the outer side end of the split lower die lower section and the outer side end of the split lower die upper section can make contact with a rim casting blank of a hub blank to be spun; the ejection mechanism comprises an ejector moving on the lower die structure, and the ejector is suitable for supporting the spoke back cavity end of the hub blank; and the upper die structure is arranged opposite to the lower die structure and comprises an upper die plate and a positioning and pressing structure which is detachably connected with the upper die plate and is suitable for pressing the hub blank on the ejector. Through the split spinning die design, the manufacturing cost and the maintenance difficulty of the die are greatly reduced, and meanwhile, the hub spinning die can efficiently adapt to hub products of different specifications.

Description

Technical Field

[0001] The invention relates to the technical field of wheel hub processing, in particular to a multi-specification split shared wheel hub spinning die. Background Art

[0002] At present, the spinning process is a relatively advanced process, but basically all molds of the same size are opened as a whole, which has high manufacturing costs and cumbersome maintenance and storage. In order to solve the above problems, a new mold design solution is urgently needed for iterative upgrading.

[0003] As a relatively advanced metal processing technology, spinning is widely used in the production of wheel hubs. This process uses a mold to press the wheel hub blank into shape, and then spins the inner and outer rims of the blank. Its advantages are that the processing process is efficient and can ensure high forming accuracy, effectively improving the performance of the product and making the product lighter.

[0004] However, most of the existing wheel hub spinning molds are of integral mold design. Since the mold is an integrated structure, its manufacturing cost is high and maintenance is difficult. In addition, for wheel hub products of different specifications, the entire mold often needs to be replaced, further increasing production costs. Summary of the invention

[0005] To this end, the present invention provides a multi-specification split shared wheel hub spinning mold. Through the split spinning mold design, the manufacturing cost and maintenance difficulty of the mold are greatly reduced, and at the same time it can efficiently adapt to wheel hub products of different specifications.

[0006] In order to solve the above technical problems, the present invention provides a multi-specification split shared wheel hub spinning die, comprising: The lower die structure comprises a lower die seat, a split lower die lower section detachably connected to the lower die seat, and a split lower die upper section detachably connected to the split lower die lower section, wherein during spinning, the outer ends of the split lower die section and the split lower die upper section can contact the rim casting blank of the wheel hub blank to be spun; An ejection mechanism, comprising an ejector movable on the lower mold structure, the ejector being suitable for supporting the spoke back cavity end of the hub blank; The upper mold structure is arranged opposite to the lower mold structure, and comprises an upper mold plate and a positioning and pressing structure which is detachably connected to the upper mold plate and is suitable for pressing the wheel hub blank onto the ejector.

[0007] In one embodiment of the present invention, the ejection mechanism also includes an ejection rod, a connecting slider connected to the ejection rod and slidably connected to the center hole of the lower section of the split lower mold, and a connecting plate connected to the connecting slider, and the ejector is connected to the connecting plate.

[0008] In one embodiment of the present invention, it also includes a spinning lower connector connected to the spinning machine, the lower die base is connected to the spinning lower connector, the ejection mechanism also includes a limit plate connected to the ejection rod and a cushion block connected to the limit plate, the cushion block is arranged in the step hole of the spinning lower connector, and the limit plate can be abutted against the step hole of the spinning lower connector.

[0009] In one embodiment of the present invention, the ejector includes an avoidance hollow area for the hub blank to extend into, as well as a first profile and a second profile, the first profile is fitted with the upper end of the upper section of the split lower mold through an inclined surface, and the second profile follows the spoke back cavity end and the inner wheel neck of the hub blank.

[0010] In one embodiment of the present invention, the first profile is fitted to the upper end of the upper section of the split lower mold via a 20°-50° inclined surface, and the second profile is provided with hanging screw holes.

[0011] In one embodiment of the present invention, a radial avoidance space of not less than 0.3 mm and an angle difference of not less than 2° are provided between the second molding surface of the ejector and the inner wheel neck.

[0012] In one embodiment of the present invention, the positioning and clamping structure includes a central pressing block connected to the middle of the upper template and a conforming pressing block located around the central pressing block, the central pressing block can be abutted against the bolt hole precasting table and / or the outer end face of the flange of the hub blank, and the conforming pressing block can clamp and conform to the spoke surface of the hub blank.

[0013] In one embodiment of the present invention, the central pressing block is provided with a central through hole, the upper template is provided with a central positioning hole, a connecting column is provided between the central through hole and the central positioning hole, and the end of the connecting column is provided with a conical positioning sleeve that is in positioning contact with the central through hole.

[0014] In one embodiment of the present invention, a detachable outer lip pressing ring capable of abutting against the outer lip of the hub blank is provided at the lower end of the upper template.

[0015] In one embodiment of the present invention, the upper end of the upper mold plate is connected to a spinning upper connector for connecting to a spinning machine.

[0016] The above technical solution of the present invention has the following advantages compared with the prior art: The multi-specification split shared wheel hub spinning mold described in the present invention adopts a split design, so only part of the mold components (such as the ejector, positioning and clamping structure, etc.) can be replaced according to production needs without replacing the entire mold, which greatly reduces the manufacturing and maintenance costs of the mold.

[0017] The present invention adopts a split lower mold lower section design, and when the wheel type and diameter are the same, three adjacent wheel width products can be realized. In addition, the split mold design is easy to disassemble and install, and the operation is simple, which not only saves labor and time, but also ensures the accuracy and effect of the wheel hub during the production process, and avoids production problems caused by operating errors or improper installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0019] Figure 1 It is a structural schematic diagram of the split wheel hub spinning mold of the present invention.

[0020] Figure 2 yes Figure 1 A partial enlarged schematic diagram of .

[0021] Figure 3 It is a schematic diagram of the spinning forming of the wheel hub blank of the present invention.

[0022] Description of the Figures in the Specification: 1. Lower die structure; 11. Lower die base; 12. Split lower die lower section; 13. Split lower die upper section; 2. Ejection mechanism; 21. Ejector; 211. Avoidance hollow area; 212. First profile; 213. Second profile; 214. Lifting screw hole; 22. Ejector rod; 23. Connecting slider; 24. Connecting plate; 25. Limiting plate; 26. Cushion block; 3. Upper die structure; 31. Upper die plate; 32. Positioning and clamping structure; 33. Center pressing block; 34. Conformal pressing block; 35. Conical positioning sleeve; 36. Outer wheel lip conformal pressing ring; 4. Spin down the connector; 41. Step hole; 5. Spin on the connector; 6. Hub blank; 61. Rim casting blank; 62. Spoke back cavity end; 63. Spinning rough blank; 64. Inner wheel neck; 65. Bolt hole precasting table; 66. Flange outer end face; 67. Spoke face; 68. Outer wheel lip. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0024] In the present invention, if directions (up, down, left, right, front and back) are described, it is only for the convenience of describing the technical solution of the present invention, and does not indicate or imply that the technical features referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation of the present invention.

[0025] In the present invention, "several" means one or more, "multiple" means more than two, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself. In the description of the present invention, if there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected or electrically connected or able to communicate with each other; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0027] Reference Figure 1 As shown, a multi-specification split shared wheel hub spinning mold of the present invention comprises: The lower die structure 1 comprises a lower die seat 11, a split lower die lower section 12 detachably connected to the lower die seat 11 (e.g., connected by bolts), and a split lower die upper section 13 detachably connected to the split lower die lower section 12 (e.g., connected by bolts). During spinning, the outer ends of the split lower die lower section 12 and the split lower die upper section 13 can contact the rim casting blank 69 of the wheel hub blank 6 (aluminum alloy wheel hub) to be spun; The ejection mechanism 2 comprises an ejector 21 movable on the lower mold structure 1, wherein the ejector 21 is suitable for supporting the spoke back cavity end 62 of the hub blank 6; The upper mold structure 3 is arranged opposite to the lower mold structure 1, and includes an upper mold plate 31, and a positioning and clamping structure 32 which is detachably connected to the upper mold plate 31 (such as by bolts) and is suitable for pressing the wheel hub blank 6 onto the ejector 21.

[0028] Through the setting of the above-mentioned split wheel hub spinning mold, the production of various wheel hub products of different widths can be achieved. Only the ejector 21 and the positioning and clamping structure 32 and other components need to be replaced, thereby reducing the cost. By adopting the upper and lower mold structures 1 with a segmented structure, the required strength of the mold is ensured; and it can be flexibly disassembled and adjusted, and the operation is simple and efficient, so that when replacing the spinning mold, it not only saves labor and time, but also ensures the accuracy and effect of the product.

[0029] It should be noted that, through the design of the split lower mold structure 1, when the diameter and wheel type of the wheel hub are the same, the processing of multiple products with different wheel widths can be achieved. For example, for products with a 16-inch diameter and wheel widths of 6 inches, 6.5 inches, and 7.0 inches, it can be completed under the same set of molds without replacing any parts.

[0030] In one embodiment, the ejection mechanism 2 further includes an ejection rod 22, a connecting slider 23 connected to the ejection rod 22 and slidably connected to the center hole of the split lower mold lower section 12, and a connecting plate 24 connected to the connecting slider 23, and the ejector 21 is connected to the connecting plate 24. The connecting slider 23 and the center hole of the split lower mold lower section 12 cooperate to ensure that the coaxiality after repeated sliding is ≤0.5mm.

[0031] In one embodiment, it also includes a spinning lower connector 4 for connecting to the spinning machine, the lower die base 11 is connected to the spinning lower connector 4, the ejection mechanism 2 also includes a limit plate 25 connected to the ejection rod 22 and a cushion block 26 connected to the limit plate 25, the cushion block 26 is arranged in the step hole 41 of the spinning lower connector 4, and the limit plate 25 can be abutted against the step hole 41 of the spinning lower connector 4.

[0032] In one embodiment, the ejector 21 includes an avoidance hollow area 211 for the hub blank 6 to extend into, as well as a first mold surface 212 and a second mold surface 213. The first mold surface 212 is fitted with the upper end of the split lower mold upper section 13 through an inclined surface, and the second mold surface 213 follows the spoke back cavity end 62 and the inner wheel neck 64 of the hub blank 6.

[0033] In one embodiment, the first profile 212 is fitted with the upper end of the split lower mold upper section 13 via a 20°-50° inclined surface, and the second profile 213 is provided with hanging screw holes 214 .

[0034] In one embodiment, referring to Figure 2 As shown, a radial clearance space of not less than 0.3 mm and an angle difference of not less than 2° are provided between the second molding surface 213 of the ejector 21 and the inner wheel neck 64. This ensures smooth demoulding after spinning. In one embodiment, referring to Figure 3 As shown, the positioning and clamping structure 32 includes a central pressing block 33 connected to the middle of the upper mold plate 31 and a conforming pressing block 34 located around the central pressing block 33. The central pressing block 33 can be abutted against the bolt hole precasting platform 65 and / or the flange outer end face 66 of the hub blank 6 (whether to clamp or not is determined based on whether it is a machined surface), and the conforming pressing block 34 can clamp and conform to the spoke surface 67 of the hub blank 6.

[0035] It should be noted that when replacing a rim structure of the same specification, only the ejector 21 and the center pressure block 33 need to be replaced, which is suitable for situations where the rim structures are similar but the spoke shapes are different (for example, they are all 17-inch products but the spoke shapes are different and the rim structures are similar).

[0036] Specifically, the central pressing block 33 is provided with a central through hole, the upper template 31 is provided with a central positioning hole, a connecting column is provided between the central through hole and the central positioning hole, and the end of the connecting column is provided with a conical positioning sleeve 35 that is in positioning contact with the central through hole. The conical positioning sleeve 35 ensures positioning accuracy, ensures the coaxiality of the center of the central pressing block 33 and the center of the central pressing block 33, and is easy to disassemble and install.

[0037] Specifically, when the outer wheel lip pressing ring 36 of the wheel hub blank 6 is a machined surface, the lower end of the upper template 31 is provided with a detachable outer wheel lip pressing ring 36 that can abut against the outer wheel lip 68 of the wheel hub blank 6. When the outer wheel lip pressing ring 36 of the wheel hub blank 6 is a non-machined surface, the wheel hub blank 6 is provided with an anti-collision auxiliary positioning outer wheel ear.

[0038] Through the above arrangement, the upper template 31 has multiple positioning and clamping structure 32 components, which can adapt to different wheel structures and process requirements, meet the needs of processed and non-processed surface products, and multiple clamping structures can be used selectively to prevent indentations on non-processed surfaces.

[0039] In one embodiment, the upper end of the upper mold plate 31 is connected to a spinning upper connector 5 for connecting to a spinning machine.

[0040] When in use, the lower die base 11 is installed on the spinning machine by spinning the lower connector 4, and the upper die plate 31 is installed on the spinning machine by spinning the upper connector 5. According to the specifications of the wheel hub, the appropriate split lower die section 12 and the split lower die upper section 13 are selected, and the positioning and clamping structure 32 is installed as needed, including the central pressure block 33 and the follow-up pressure block 34.

[0041] Place the hub blank 6 between the split lower mold upper section 13 of the lower mold and the ejector 21, ensure that the ejector 21 supports the spoke back cavity end 62 of the hub blank 6, and press the hub blank 6 through the positioning and clamping structure 32 of the upper mold (such as the center pressure block 33 and the follow-up pressure block 34).

[0042] The spinning machine is started, and the upper mold plate 31 and the lower mold structure 1 run synchronously. During the spinning process, the rim casting blank 61 of the hub blank 6 is punched by the spinning wheel and contacts the outer ends of the split lower mold lower section 12 and the split lower mold upper section 13, thereby obtaining a rough blank 63 after spinning.

[0043] After the spinning is completed, the spinning machine stops applying pressure. At this time, the wheel hub blank 6 has been formed, and the ejector 21 ejects the wheel hub from the mold through the ejector rod 22 system.

[0044] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A multi-specification split shared wheel hub spinning die, characterized in that: include: A lower die structure (1) comprises a lower die base (11), a split lower die lower section (12) detachably connected to the lower die base (11), and a split lower die upper section (13) detachably connected to the split lower die lower section (12), wherein during spinning, the outer ends of the split lower die lower section (12) and the split lower die upper section (13) are respectively capable of contacting a rim casting blank (61) of a wheel hub blank (6); An ejection mechanism (2) comprising an ejector (21) movable on the lower mold structure (1), the ejector (21) being suitable for supporting a spoke back cavity end (62) of the hub blank (6); The upper mold structure (3) is arranged opposite to the lower mold structure (1), and comprises an upper mold plate (31) and a positioning and clamping structure (32) detachably connected to the upper mold plate (31) and suitable for pressing the wheel hub blank (6) onto the ejector (21).

2. The multi-specification split shared wheel hub spinning mold according to claim 1, characterized in that: The ejection mechanism (2) further comprises an ejection rod (22), a connecting slider (23) connected to the ejection rod (22) and slidably connected to the center hole of the lower section (12) of the split lower mold, and a connecting plate (24) connected to the connecting slider (23); the ejector (21) is connected to the connecting plate (24).

3. The multi-specification split shared wheel hub spinning mold according to claim 2, characterized in that: It also includes a spinning lower connector (4) for connecting to the spinning machine, the lower die base (11) is connected to the spinning lower connector (4), the ejection mechanism (2) also includes a limit plate (25) connected to the ejection rod (22) and a cushion block (26) connected to the limit plate (25), the cushion block (26) is arranged in the step hole (41) of the spinning lower connector (4), and the limit plate (25) can be abutted against the step hole (41) of the spinning lower connector (4).

4. The multi-specification split shared wheel hub spinning mold according to claim 1, characterized in that: The ejector (21) comprises an avoidance hollow area (211) for the hub blank (6) to extend into, as well as a first profile (212) and a second profile (213), wherein the first profile (212) is fitted with the upper end of the upper section (13) of the split lower mold via an inclined surface, and the second profile (213) is molded to the spoke back cavity end (62) and the inner wheel neck (64) of the hub blank (6).

5. The multi-specification split shared wheel hub spinning die according to claim 4, characterized in that: The first molded surface (212) is fitted to the upper end of the upper section (13) of the split lower mold via a 20°-50° inclined surface, and hanging screw holes (214) are distributed on the second molded surface (213).

6. The multi-specification split shared wheel hub spinning die according to claim 4, characterized in that: A radial clearance space of not less than 0.3 mm and an angle difference of not less than 2° are provided between the second molding surface (213) of the ejector (21) and the inner wheel neck (64).

7. The multi-specification split shared wheel hub spinning mold according to claim 1, characterized in that: The positioning and clamping structure (32) comprises a central pressing block (33) connected to the middle of the upper mold plate (31) and a conforming pressing block (34) located around the central pressing block (33); the central pressing block (33) is capable of abutting against a bolt hole precasting platform (65) and / or a flange outer end surface (66) of the hub blank (6); and the conforming pressing block (34) is capable of clamping and conforming to a spoke surface (67) of the hub blank (6).

8. The multi-specification split shared wheel hub spinning die according to claim 7, characterized in that: The central pressing block (33) is provided with a central through hole, the upper template (31) is provided with a central positioning hole, a connecting column is provided between the central through hole and the central positioning hole, and the end of the connecting column is provided with a conical positioning sleeve (35) that is in positioning contact with the central through hole.

9. The multi-specification split shared wheel hub spinning die according to claim 7, characterized in that: The lower end of the upper mold plate (31) is provided with a detachable outer wheel lip pressing ring (36) capable of abutting against the outer wheel lip (68) of the wheel hub blank (6).

10. The multi-specification split shared wheel hub spinning mold according to claim 1, characterized in that: The upper end of the upper mold plate (31) is connected to an upper spinning connector (5) for connecting to a spinning machine.

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