CN-224222427-U - Hub rounding die

CN224222427UCN 224222427 UCN224222427 UCN 224222427UCN-224222427-U

Abstract

The utility model relates to a hub rounding die which comprises a die pressing mandrel fixedly arranged, an upper die and a lower die which are respectively arranged above and below the die pressing mandrel, wherein the axis of the die pressing mandrel is horizontally arranged, the upper die is of an arc-shaped structure with an opening facing downwards and opposite to the die pressing mandrel, the lower die is of an arc-shaped structure with an opening facing upwards and opposite to the die pressing mandrel, the upper die and the lower die are respectively driven to lift and can be clasped around the periphery of the die pressing mandrel to form a round shape by an independent driving device, two ends of the lower die are respectively provided with a rolling shaft, and the peripheral outline of the rolling shaft is connected with the concave outline of the lower die to form an arc-shaped combined surface matched with the lower half outer circular surface of the die pressing mandrel. The utility model reduces the number of equipment required in the hub rounding manufacturing process and improves the production efficiency. Through setting up the roller bearing, can turn into rolling friction with the sliding friction of plane steel sheet and bed die tip, avoid the plane steel sheet to rub impaired in the suppression process.

Inventors

CHEN ZHIGUANG
ZHU YILIN
LIN ZIYUAN
Lai Zhidong

Assignees

正兴车轮集团有限公司

Dates

Publication Date: 20260512
Application Date: 20250428

Claims (6)

1. The hub circle pressing die is characterized by comprising a fixed die pressing mandrel, an upper die and a lower die, wherein the upper die and the lower die are respectively arranged above and below the die pressing mandrel, the axis of the die pressing mandrel is horizontally arranged, the upper die is of an arc-shaped structure with an opening facing downwards and a lower die is of an arc-shaped structure with an opening facing upwards and a die pressing mandrel, the upper die and the lower die are respectively driven to lift and can be wrapped around the periphery of the die pressing mandrel to form a circle by an independent driving device, two ends of the lower die are respectively provided with a rolling shaft, and the peripheral outline of the rolling shaft is connected with the concave outline of the lower die to form an arc-shaped combined surface matched with the lower semi-outer circular surface of the die pressing mandrel.
2. The hub rounding mold of claim 1, wherein the inner sides of the two ends of the upper mold are provided with inclined guide surfaces which gradually expand outwards, and the inclined guide surfaces are engaged with the concave contours of the upper mold.
3. The hub rounding mold of claim 1, wherein a bearing is provided at each end of the lower mold, and the roller is rotatably coupled to the lower mold by being coupled to the bearing.
4. The hub rounding mold of claim 1, wherein the arcuate ends of the lower mold are configured to be contoured to form a platform for placement of flat sheet material.
5. The hub rounding mold of claim 1, further comprising a material returning mechanism disposed on the outer periphery of the molding mandrel and having a material returning pushing stroke in a horizontal direction.
6. The hub rounding mold of claim 5, wherein the material returning mechanism is a push plate arranged around the periphery of the molding mandrel.

Description

Hub rounding die Technical Field The utility model relates to a wheel manufacturing technology, in particular to a hub rounding die. Background The wheel is an important part of an automobile and is formed by welding a spoke and a rim, wherein the rim is usually manufactured by rolling a plane steel plate and then pressing and re-rounding, and the prior art needs a plurality of devices, and has the defects of long manufacturing flow, low efficiency and high cost. Moreover, when the rounding procedure is carried out in the prior art, the end part of the rounding die is easy to rub against the steel plate, and the product quality is affected. Disclosure of utility model Aiming at the problems, the utility model provides a hub circle pressing die capable of rapidly realizing circle pressing of a planar steel plate. The utility model is realized by adopting the following technical scheme: The utility model provides a hub rounding die which comprises a die pressing mandrel fixedly arranged, an upper die and a lower die which are respectively arranged above and below the die pressing mandrel, wherein the axis of the die pressing mandrel is horizontally arranged, the upper die is of an arc-shaped structure with an opening facing downwards and opposite to the die pressing mandrel, the lower die is of an arc-shaped structure with an opening facing upwards and opposite to the die pressing mandrel, the upper die and the lower die are respectively driven to lift and can be clasped around the periphery of the die pressing mandrel to form a round shape by independent driving devices, two ends of the lower die are respectively provided with a rolling shaft, and the peripheral outline of the rolling shaft is connected with the concave outline of the lower die to form an arc-shaped combined surface matched with the lower half outer circular surface of the die pressing mandrel. Wherein, preferably, the inner sides of the two ends of the upper die are provided with inclined guide surfaces which gradually expand outwards, and the inclined guide surfaces are connected with the concave outline of the upper die. Preferably, a bearing is disposed at each end of the lower mold, and the roller is connected to the bearing so as to be rotatably connected to the lower mold. Wherein, preferably, the arc-shaped two ends of the lower die are configured to be equal in height so as to form a platform for placing flat plate materials. Wherein, preferably, still include material returning mechanism, material returning mechanism locates the periphery of mould pressing dabber and has the material returning propelling movement stroke of horizontal direction. Wherein, preferably, the material returning mechanism is a push plate which is arranged around the periphery of the mould pressing mandrel. The utility model has the advantages that the circular arc structures of the lower half part and the upper half part of the hub are molded in a sectional mode, the rolling and rounding processes can be combined, the die can also be used for the re-rounding process, the number of equipment required in the hub rounding manufacturing process is reduced, and the production efficiency is improved. Through setting up the roller bearing, can turn into rolling friction with the sliding friction of plane steel sheet and bed die tip, avoid the plane steel sheet to rub impaired in the suppression process. Drawings FIG. 1 is a schematic diagram of a first stage of a hub rounding die molding in an embodiment; FIG. 2 is a schematic diagram of a second stage of molding a hub rounding mold in an embodiment; FIG. 3 is a schematic diagram of a third stage of the molding of the hub rounding mold in the embodiment. Detailed Description For further illustration of the various embodiments, the utility model is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present utility model. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components. The utility model will now be further described with reference to the drawings and detailed description. Referring to fig. 1-3, as a preferred embodiment of the present utility model, there is provided a hub rounding mold, which includes a stationary molding mandrel 1, and an upper mold 2 and a lower mold 3 respectively disposed above and below the molding mandrel 1, wherein the axis of the molding mandrel 1 is horizontally disposed, the upper mold 2 has an arc structure with an opening facing downward to the molding mandrel 1, the lower mold 3 has an arc structure with an opening facing upward to the molding mandrel 1, the upper mold 2 and the lower