Quick-change split type spinning die

Abstract

The utility model relates to the technical field of hub manufacturing, and discloses a quick-change split type spinning die which comprises a lower die sleeve arranged corresponding to a hub back cavity molded line and used for supporting a hub blank. The lower die core is used for being connected with a spindle of spinning equipment, and the lower die core and the lower die sleeve are coaxially arranged and detachably connected. A traditional integrated spinning die is arranged to be of a detachable split structure, and when a production wheel type is replaced, only the lower die sleeve of the corresponding wheel type needs to be detached and replaced, and production operation of different wheel types can be carried out. The die is convenient to disassemble and replace, and the working efficiency is improved. Meanwhile, corresponding lower die sleeves only need to be configured corresponding to different wheel types, a whole set of spinning die does not need to be configured, and the manufacturing and management cost of the die is reduced. The mold is connected and fixed through the connecting structure arranged on the side face, the mold is convenient to disassemble and replace, and the labor intensity of operators is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel hub manufacturing, in particular to a quick-change split-type spinning die. Background Art

[0002] Spinning hubs are increasingly favored by the market due to their natural advantages such as uniform material structure, high strength, and impact resistance. The spinning hub process is to place the hub blank on a spinning die, rotate the die and blank at high speed, and extrude the blank with a rotating head to form the blank.

[0003] In the production process of spinning hubs, the corresponding molds need to be replaced frequently for different wheel types. The existing molds are usually designed as one piece. When replacing, the whole set of molds needs to be disassembled. The bottom of the mold is installed in conjunction with the main shaft flange of the equipment. The bolt installation direction is at the bottom of the mold, which is not suitable for disassembly using a ratchet wrench. Operators need to frequently turn their hands to tighten the bolts. Each loading and unloading of the mold takes a long time and the operation efficiency is low. In addition, the molds are generally heavy and difficult to transport, and the labor intensity of on-site workers is high. At the same time, a complete set of molds needs to be made for each wheel type, which increases the production and management costs of the molds.

[0004] Based on this, developing a quick-change split spinning die for application in actual production is an urgent problem to be solved. Utility Model Content

[0005] The purpose of the utility model is to provide a quick-change split spinning mold to address the above problems, so as to solve the problems of inconvenient disassembly and replacement, low operating efficiency and high labor intensity in the use of existing spinning, and at the same time solve the problem of high production and management costs of existing spinning molds.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A quick-change split spinning die includes a lower die sleeve arranged corresponding to the back cavity line of a hub, used to support the hub blank, and a lower die core connected to the main shaft of the spinning equipment, wherein the lower die core is coaxially arranged with the lower die sleeve and can be detachably connected.

[0008] Preferably, a positioning truncated cone is provided on the top of the lower mold core, and a conical groove is provided on the bottom of the lower mold sleeve corresponding to the positioning truncated cone, so that the positioning accuracy of the lower mold sleeve and the lower mold core is improved by the cooperation between the conical groove and the conical surface of the positioning truncated cone.

[0009] Preferably, the lower mold sleeve and the lower mold core are connected and fixed by a connecting structure arranged on the side, a countersunk hole is opened on the side of the lower mold sleeve, and a bolt hole corresponding to the countersunk hole is opened on the lower mold core, and the fastening bolt passes through the countersunk hole and is screwed into the bolt hole to realize the connection and fixation of the lower mold sleeve and the lower mold core.

[0010] Preferably, a positioning structure is provided on the mating end surfaces of the lower die sleeve and the lower die core, which is used for quick alignment of the countersunk hole and the bolt hole to improve assembly efficiency. The positioning structure includes a positioning hole provided on the lower die sleeve and a positioning pin provided on the lower die core, and the positioning hole and the positioning pin are provided corresponding to the positions of the countersunk hole and the bolt hole.

[0011] Preferably, the spinning mold also includes a ejection structure arranged corresponding to the wheel hub, which is used for ejecting and demolding the finished spinning product. The ejection structure includes an ejection rod slidably connected to the spinning mold, and a ejection plate is arranged on the top of the ejection rod. The ejection plate is arranged corresponding to the position of the wheel hub flange, and the bottom end of the ejection rod is connected to a power device.

[0012] The beneficial effects of the utility model are:

[0013] The utility model sets the traditional one-piece spinning mold into a detachable split structure. When changing the production wheel type, it is only necessary to disassemble and replace the lower mold sleeve of the corresponding wheel type to carry out the production operation of different wheel types. It is convenient to disassemble and replace the mold and improve the operation efficiency. At the same time, the utility model only needs to configure the corresponding lower mold sleeve corresponding to different wheel types, without configuring a whole set of spinning molds, which reduces the production and management costs of the mold.

[0014] The mold is connected and fixed by the connecting structure set on the side. When changing the production wheel type, the operator can use a ratchet wrench or an electric tool to quickly remove the fastening bolts from the side of the mold without the need to remove it from the bottom of the mold, which facilitates the disassembly and replacement of the mold and reduces the labor intensity of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] In the figure: 1--lower die sleeve; 11--conical groove; 12--counter sink hole; 13--guide countersunk hole; 2--lower die core; 21--positioning cone; 22--bolt hole; 3--positioning structure; 31--positioning hole; 32--positioning pin; 41--ejection rod; 42--ejection plate. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] like Figure 1As shown, a quick-change split spinning mold includes a lower mold sleeve 1 arranged corresponding to the back cavity line of the hub, which is used to support the hub blank. It also includes a lower mold core 2 for connecting to the main shaft of the spinning equipment, and the lower mold core 2 is coaxially arranged with the lower mold sleeve 1 and can be detachably connected. When in use, the lower mold core 2 is fixedly connected to the main shaft of the spinning equipment, and the lower mold core 2 corresponding to the wheel shape is assembled on the lower mold core 2, and then the hub blank is supported on the lower mold sleeve 1 to perform the spinning operation on the hub blank.

[0020] This embodiment sets the traditional one-piece spinning mold into a detachable split structure. When changing the production wheel type, it is only necessary to disassemble and replace the lower mold sleeve 1 of the corresponding wheel type to carry out the production operation of different wheel types. It is convenient to disassemble and replace the mold and improve the operation efficiency. At the same time, this embodiment only needs to configure the corresponding lower mold sleeve 1 corresponding to different wheel types, without configuring a whole set of spinning molds, which reduces the production and management costs of the mold.

[0021] As a preferred embodiment, the lower mold sleeve 1 and the lower mold core 2 are matched with a conical surface to improve the positioning accuracy. Specifically, a positioning truncated cone 21 is provided on the top of the lower mold core 2, and a conical groove 11 is provided on the bottom of the lower mold sleeve 1 corresponding to the positioning truncated cone 21, and the positioning and assembly of the lower mold sleeve 1 and the lower mold core 2 is achieved by matching the conical surface of the conical groove 11 with the conical surface of the positioning truncated cone 21.

[0022] Preferably, the lower die sleeve 1 and the lower die core 2 are connected and fixed by a connecting structure arranged on the side, so as to improve the problem of inconvenient disassembly and replacement of the traditional spinning die. Specifically, a countersunk hole 12 is opened on the side of the lower die sleeve 1, and a bolt hole 22 is opened on the lower die core 2 corresponding to the countersunk hole 12. The fastening bolt passes through the countersunk hole 12 and is screwed into the bolt hole 22 to achieve the connection and fixation of the lower die sleeve 1 and the lower die core 2. When changing the production wheel type, the operator can quickly remove the fastening bolt from the side of the mold with the help of a ratchet wrench or an electric tool, without having to disassemble from the bottom of the mold, which further facilitates the disassembly and replacement of the mold and reduces the labor intensity of the operator.

[0023] Preferably, a positioning structure 3 is provided on the mating end surfaces of the lower die sleeve 1 and the lower die core 2, which is used for rapid alignment of the countersunk hole 12 and the bolt hole 22, thereby improving assembly efficiency. The positioning structure 3 includes a positioning hole 31 provided on the lower die sleeve 1 and a positioning pin 32 provided on the lower die core 2. The positioning hole 31 and the positioning pin 32 are arranged corresponding to the positions of the countersunk hole 12 and the bolt hole 22, so that when the positioning pin 32 is inserted into the positioning hole 31, the countersunk hole 12 is aligned with the bolt hole 22, thereby achieving rapid alignment of the countersunk hole 12 and the bolt hole 22. This further improves the efficiency of mold replacement.

[0024] Preferably, the spinning mold further includes a ejector structure arranged corresponding to the wheel hub, which is used for ejecting and demolding the finished spinning product. The ejector structure includes an ejector rod 41 slidably connected to the spinning mold, and an ejector plate 42 is arranged at the top of the ejector rod 41. The ejector plate 42 is arranged corresponding to the position of the wheel hub flange, and the bottom of the ejector rod 41 is connected to a power device to provide power for the lifting and lowering action of the ejector rod 41. When the spinning of the wheel hub blank is completed, the power device drives the ejector rod 41 and the ejector plate 42 to lift upward at the same time, ejecting the finished spinning product from the mold, and completing the demolding operation.

[0025] Preferably, a guide countersunk hole 13 is provided at the top of the lower die sleeve 1 corresponding to the ejection plate 42, and the ejection plate 42 is axially slidably connected in the guide countersunk hole 13. The guide effect of the guide countersunk hole 13 ensures that the ejection plate 42 accurately falls back after ejection, effectively avoiding the ejection plate 42 from getting stuck.

[0026] The above disclosure is only a specific embodiment of the present patent, but the present patent is not limited thereto. For ordinary technicians in this field, without departing from the principle of the present invention, the deformation made should be deemed to belong to the protection of the present invention.

Claims

1. A quick-change split spinning die, characterized in that: The invention comprises a lower die sleeve (1) arranged corresponding to the back cavity profile of the wheel hub and used for supporting the wheel hub blank, and also comprises a lower die core (2) used for connecting to the main shaft of the spinning equipment, wherein the lower die core (2) and the lower die sleeve (1) are arranged coaxially and are detachably connected; the lower die sleeve (1) and the lower die core (2) are connected and fixed by a connecting structure arranged on the side, the side of the lower die sleeve (1) is provided with a countersunk hole (12), and the lower die core (2) is provided with a bolt hole (22) corresponding to the countersunk hole (12), and a fastening bolt passes through the countersunk hole (12) and is screwed into the bolt hole (22).

2. A quick-change split spinning die according to claim 1, characterized in that: A positioning truncated cone (21) is provided at the top of the lower mold core (2), and a conical groove (11) is provided at the bottom of the lower mold sleeve (1) corresponding to the positioning truncated cone (21), wherein the conical groove (11) matches the conical surface of the positioning truncated cone (21).

3. The quick-change split spinning die according to claim 1, characterized in that: A positioning structure (3) is provided on the mating end surfaces of the lower die sleeve (1) and the lower die core (2) for quickly aligning the countersunk hole (12) and the bolt hole (22); the positioning structure (3) comprises a positioning hole (31) provided on the lower die sleeve (1) and a positioning pin (32) provided on the lower die core (2); the positioning hole (31) and the positioning pin (32) are provided corresponding to the positions of the countersunk hole (12) and the bolt hole (22).

4. The quick-change split spinning die according to claim 1, characterized in that: It also includes a ejection structure arranged corresponding to the wheel hub and used for ejecting and demoulding the finished spinning product, the ejection structure including an ejection rod (41) slidably connected to the spinning mold, an ejection plate (42) being arranged at the top end of the ejection rod (41), the ejection plate (42) being arranged corresponding to the position of the wheel hub flange, and the bottom end of the ejection rod (41) being connected to a power device.

5. The quick-change split spinning die according to claim 4, characterized in that: A guide countersunk hole (13) is provided at the top end of the lower die sleeve (1) corresponding to the ejector plate (42), and the ejector plate (42) is axially slidably connected in the guide countersunk hole (13).

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