CN-224210310-U - Thermosetting forming die for rim

CN224210310UCN 224210310 UCN224210310 UCN 224210310UCN-224210310-U

Abstract

The utility model relates to a thermosetting forming die for a rim, which comprises a plurality of die units capable of being spliced or separated, an annular rim curing chamber is formed by splicing the die units, and the thermosetting forming die also comprises a spoke hole pin and a spoke hole pin positioning device, wherein the spoke hole pin positioning device is fixedly arranged at the radial inner side of the rim curing chamber, the first end of the spoke hole pin is matched with the spoke hole pin positioning device in a positioning way, the second end of the spoke hole pin penetrates into the rim curing chamber, the second end of the spoke hole pin is used for forming a spoke hole on the rim, the spoke hole pin positioning device comprises a first positioning part, the first positioning part is of an inclined supporting surface structure, and the first positioning part is contacted and matched with the peripheral side surface of the spoke hole pin so as to position an included angle of the spoke hole pin relative to a plane where the rim is positioned.

Inventors

ZHU HONGKAI
WU WENFENG
YU XIAOYUAN
DENG ZIHUA
MA JINGJING

Assignees

豹次方(厦门)科技有限公司

Dates

Publication Date: 20260508
Application Date: 20250521

Claims (7)

1. The thermosetting forming die of the rim comprises a plurality of die units which can be spliced or separated, and an annular rim curing cavity is formed by splicing the die units, and the thermosetting forming die is characterized in that: still include spoke hole round pin and spoke hole round pin positioner, the radial inboard in rim solidification cavity is fixed to the fixed setting of spoke hole round pin positioner, and spoke hole round pin's first end location cooperation is in spoke hole round pin positioner, and spoke hole round pin's second end penetrates rim solidification cavity, and spoke hole round pin's second end is used for shaping spoke hole on the rim, and spoke hole round pin positioner includes first location portion, first location portion is slope supporting surface structure, and first location portion and spoke hole round pin week side contact cooperation to the contained angle of the relative plane that the rim was located of location spoke hole round pin.
2. The heat-set forming die for rims according to claim 1, wherein the second end of the spoke hole pin is provided with a partially enlarged second head portion having an outer diameter larger than the aperture of the spoke hole.
3. The heat setting mold for a rim according to claim 2, wherein the spoke hole pin positioning device further comprises a second positioning portion, the second positioning portion being a blocking wall structure, the second positioning portion being disposed opposite an axial end face of the first end of the spoke hole pin for positioning the spoke hole pin against the axial end face in an axial direction thereof relative to the rim.
4. The heat-set forming die for rims according to claim 3, wherein the first positioning portion and the second positioning portion are connected to form a T-shaped limiting groove, a first end of the spoke hole pin is provided with a first head portion with a partially enlarged diameter, and the first head portion is inserted into the limiting groove.
5. The heat-set forming die for a rim of claim 1, wherein the spoke hole pin positioning means is a detachable modular structure.
6. The heat-set molding die for a rim of an automobile as set forth in claim 5, wherein said die unit includes an upper die and a lower die, and said spoke hole pin positioning means is detachably and fixedly coupled to the lower die.
7. The thermosetting molding die for a rim according to claim 1, further comprising an air bag provided in the rim curing chamber for expanding an inner wall of the rim after inflation, the second ends of the spoke hole pins being oriented toward the air bag so that the air bag can push the spoke hole pins radially inward toward the rim after inflation.

Description

Thermosetting forming die for rim Technical Field The utility model relates to a wheel manufacturing technology, in particular to a thermosetting forming die for a rim. Background Fig. 1 illustrates a conventional structure of a bicycle wheel 900, the wheel 900 including a rim 100, a hub 800 and spokes 200 connecting the rim 100 and the hub, and fig. 2 illustrates a connection structure of the rim 100 and the spokes 200. The rim 100 includes a radially inner spoke attachment portion 101 and a radially outer top portion 102, the spoke attachment portion 101 being of generally U-shaped configuration, and the spoke openings 103 being disposed at locations where the spoke attachment portion 101 is curved, i.e., the innermost ends of the spoke attachment portions 101, the spoke openings 103 extending generally radially of the rim 100 (some wheels have spokes at a slight angle to the plane of the rim, the spoke openings extending radially toward the center of the circle or slightly eccentrically generally radially depending on the weave of the spokes between the rim and the hub). When the spoke 200 is connected to the rim 100, the spoke 200 passes through the spoke hole 103, a spoke nipple 300 is connected to the end of the spoke 200 that extends into the rim 100, the other end of the spoke 200 is connected to the hub, and tension is applied by the spoke 200 such that the spoke nipple 300 is compressed against the rim of the spoke hole 103. The conventional rim 100 is usually manufactured by using a reinforcing material such as carbon fiber, and in the manufacturing process, a preform of the rim is manufactured by lamination, molding, and the like, and then the preform of the rim is put into a thermosetting molding die to be cured, thereby obtaining the rim 100. In the prior art, the spoke hole 103 is generally manufactured by drilling after the rim 100 is cured and formed, but in recent years, in order to improve the loading capacity of the spoke hole 103, some prefabricated holes of the spoke hole 103 are manufactured first in the rim pre-forming stage, in this case, during thermosetting forming, spoke hole pins need to be added into a thermosetting forming mold, and the spoke hole pins pass through the prefabricated holes, so that softened reinforcing fibers in the thermosetting process can form the spoke hole 103 around the spoke hole pins, but in the prior art, the positioning and limiting structures of the spoke hole pins are still imperfect, and often the spoke hole pins are displaced, so that the qualification rate of products is not high. Disclosure of utility model The utility model provides a thermosetting forming die for a rim with an optimized structure. The utility model is realized by adopting the following technical scheme: The utility model provides a thermosetting forming die of a rim, which comprises a plurality of die units capable of being spliced or separated, an annular rim curing chamber is formed by splicing the die units, the thermosetting forming die also comprises a spoke hole pin and a spoke hole pin positioning device, the spoke hole pin positioning device is fixedly arranged on the radial inner side of the rim curing chamber, the first end of the spoke hole pin is matched with the spoke hole pin positioning device in a positioning way, the second end of the spoke hole pin penetrates into the rim curing chamber, the second end of the spoke hole pin is used for forming a spoke hole on the rim, the spoke hole pin positioning device comprises a first positioning part, the first positioning part is of an inclined supporting surface structure, and the first positioning part is matched with the peripheral side surface of the spoke hole pin in a contact way so as to position an included angle of the spoke hole pin relative to a plane where the rim is positioned. Wherein preferably the second end of the spoke hole pin is provided with a locally enlarged second head, the outer diameter of the second head being larger than the aperture of the spoke hole. Preferably, the spoke hole pin positioning device further comprises a second positioning part, wherein the second positioning part is of a blocking wall structure, and the second positioning part and the axial end face of the first end of the spoke hole pin are oppositely arranged and used for resisting the axial end face to position the spoke hole pin relative to the rim in the axial direction. Preferably, the first positioning part and the second positioning part are connected to form a T-shaped limit groove, the first end of the spoke hole pin is provided with a first head part with a locally expanded diameter, and the first head part is inserted into the limit groove. Wherein, preferably, the spoke hole pin positioning device is a detachable modular structure. Wherein, preferably, the mould unit includes upper mould and lower mould, spoke hole round pin positioner detachably fixed connection is on the lower mould. Wherein, preferably still