CN-224224583-U - Mould for manufacturing large carbon Hu Qinxiang

CN224224583UCN 224224583 UCN224224583 UCN 224224583UCN-224224583-U

Abstract

The utility model relates to the field of carbon fiber processing and manufacturing, in particular to a die for manufacturing large carbon Hu Qinxiang, which has the advantages of reasonable structure, simple and convenient operation and low cost and can ensure the molding quality of carbon fiber materials, and is characterized in that the lower die plate is in a cuboid shape, an elliptical lower die cavity which is matched with the shape of a large carbon Huqin box to be molded is arranged in the center of the lower die plate, more than two threaded holes are arranged on the lower die plate corresponding to the two sides of the lower die cavity, pin holes are arranged at the end corners of the lower die plate, and the threaded holes and the pin holes do not penetrate through the lower die plate; the upper template is fixed on the lower template through pins and bolts, an upper die cavity corresponding to the lower die cavity is arranged in the center of the upper template, and the upper template consists of a left side plate, a neck groove movable block, a right side plate and a tail column movable block which are arranged around the upper die cavity.

Inventors

DUAN CHENGJIN
YANG KUN
FAN YINGYING
HOU HUANBIN

Assignees

威海光威精密机械有限公司

Dates

Publication Date: 20260512
Application Date: 20250314

Claims (7)

1. The die for manufacturing the large-carbon Huqin box is provided with an upper die plate and a lower die plate, and is characterized in that the lower die plate is in a cuboid shape, an oval lower die cavity which is matched with the shape of the large-carbon Huqin box to be formed is formed in the center of the lower die plate, more than two threaded holes are formed in the lower die plate, which correspond to the two sides of the lower die cavity, pin holes are formed in the corners of the lower die plate, the threaded holes and the pin holes do not penetrate the lower die plate, the upper die plate is fixed on the lower die plate through pins and bolts, an upper die cavity corresponding to the lower die cavity is formed in the center of the upper die plate, the upper die plate consists of a left side plate, a neck groove movable block, a right side plate and a tail column movable block which are arranged around the upper die cavity, counter sunk holes corresponding to the threaded holes are formed in the left side plate and the right side plate symmetrically, upper pin holes corresponding to the upper pin holes in the lower die plate are formed in the end parts of the left side plate and the right side plate, and the counter sunk holes and the upper pin holes penetrate the upper die plate.
2. A mold for manufacturing a large carbon Hu Qinxiang as defined in claim 1, wherein one ends of the left side plate and the right side plate are respectively connected to the neck groove block, and the left side plate/right side plate and the neck groove block are provided with a mating stepped structure, that is, the left side plate/right side plate and the neck groove block are closely engaged by the mating stepped structures on the adjacent sides.
3. A mold for making a large carbon Hu Qinxiang as defined in claim 1, wherein said tail boom stop portion is located in said upper mold cavity and one end of the tail boom stop is inserted into the upper mold cavity sidewall.
4. A mould for manufacturing a large carbon Hu Qinxiang as defined in claim 3, wherein the ends of the left side plate and the right side plate corresponding to the tail pillar movable block are respectively provided with a plugging channel with a semicircular section, after the left side plate and the right side plate are spliced, the two plugging channels with semicircular sections are spliced into a complete plugging channel, one end of the tail pillar movable block is plugged into the plugging channel, and the forming part of the tail pillar movable block extends into the upper mould cavity.
5. The mold for producing large carbon Hu Qinxiang as defined in claim 4, wherein the forming portion of the tail boom block is cylindrical.
6. The mold for manufacturing large carbon Hu Qinxiang as defined in claim 1, wherein the area of the lower die plate is larger than that of the upper die plate, and an outer edge portion for vacuum film encapsulation protruding 20-200mm beyond the outer edge of the upper die plate is provided around the lower die plate after the upper die plate is fixed to the lower die plate.
7. The die for manufacturing the large carbon Hu Qinxiang as defined in claim 1, wherein four pin holes are formed in the upper die plate and the lower die plate, positioning pins are arranged in the pin holes, the positioning pins are respectively a positioning table, a pin body and a guide head from top to bottom, wherein the diameter of the positioning table is 2mm to 20mm larger than that of the pin body, the guide head is in a frustum shape and has a flat bottom surface, the diameter of the guide head is gradually reduced from the pin body to bottom, the height of the positioning table is 2mm to 20mm, the total height of the positioning table and the pin body is 5mm to 50mm larger than the total height of the upper die plate, and the total height of the positioning table, the pin body and the guide head is not larger than the total height of the lower die plate and the upper die plate.

Description

Mould for manufacturing large carbon Hu Qinxiang Technical Field The utility model relates to the field of carbon fiber processing and manufacturing, in particular to a die for manufacturing a large-carbon Huqin box, which has the advantages of reasonable structure, simplicity and convenience in operation and low cost and can ensure the molding quality of a carbon fiber material. Background The large-carbon Huqin box disclosed in patent document CN221651170U is made of carbon fiber composite material, is suitable for playing bass nationality music, has an elliptic shape, an opening groove serving as a neck mounting groove is formed above the box body, sound column adjusting holes are formed in the left side face and the right side face of the box body respectively, and a mounting through hole for mounting the tail column is formed in the lower end of the box body. The product needs to be molded by adopting a carbon fiber material, and in order to improve the production efficiency and the quality of musical instruments, a molding die of a large-carbon Huqin box is needed. Vacuum bagging is a relatively simple and low cost forming process in the field of carbon fiber forming, which involves covering the prepreg surface with a vacuum bagging film that is capable of providing a uniform pressure during curing to ensure interlaminar bonding of the prepreg by applying a vacuum to the prepreg surface. Disclosure of Invention In order to make up the blank in the prior art, the utility model provides the mould for manufacturing the large-carbon Huqin box, which has the advantages of reasonable structure, simplicity and convenience in operation and low cost and can ensure the molding quality of carbon fiber materials. The technical scheme adopted for solving the technical problems is as follows: The die for manufacturing the large-carbon Huqin box is provided with an upper die plate and a lower die plate, and is characterized in that the lower die plate is in a cuboid shape, an oval lower die cavity which is matched with the shape of the large-carbon Huqin box to be formed is formed in the center of the lower die plate, more than two threaded holes are formed in the lower die plate, which correspond to the two sides of the lower die cavity, pin holes are formed in the corners of the lower die plate, the threaded holes and the pin holes do not penetrate the lower die plate, the upper die plate is fixed on the lower die plate through pins and bolts, an upper die cavity corresponding to the lower die cavity is formed in the center of the upper die plate, the upper die plate consists of a left side plate, a neck groove movable block, a right side plate and a tail column movable block which are arranged around the upper die cavity, counter sunk holes corresponding to the threaded holes are formed in the left side plate and the right side plate symmetrically, upper pin holes corresponding to the upper pin holes in the lower die plate are formed in the end parts of the left side plate and the right side plate, and the counter sunk holes and the upper pin holes penetrate the upper die plate. In order to improve the splicing tightness of adjacent parts, the left side plate/right side plate and the neck groove loose piece are provided with matched stepped structures, namely, the left side plate/right side plate and the neck groove loose piece are tightly embedded through the matched stepped structures on the adjacent side surfaces, so that the positioning accuracy of a plurality of parts of the upper template is ensured. The tail column movable block part is positioned in the upper die cavity, one end of the tail column movable block is inserted into the side wall of the upper die cavity, further, the end parts of the left side plate, the right side plate and the tail column movable block, which correspond to each other, are respectively provided with an insertion channel with semicircular cross sections, after the left side plate and the right side plate are spliced, the two insertion channels with semicircular cross sections are spliced into a complete insertion channel, one end of the tail column movable block is inserted into the insertion channel, the forming part of the tail column movable block extends into the upper die cavity, and further, the forming part of the tail column movable block is cylindrical. The area of the lower template is larger than that of the upper template, and after the upper template is fixed with the lower template, the periphery of the lower template is provided with an outer edge part for vacuum film encapsulation, which protrudes 20-200mm from the outer edge of the upper template, and the outer edge part is used for vacuum film encapsulation. The upper template and the lower template are provided with four pin holes, positioning pins are arranged in the pin holes, the positioning pins are respectively provided with a positioning table, a pin main body and a guide head from top to bottom, where