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CN-224223512-U - Ultra-precise part rapid forming die

CN224223512UCN 224223512 UCN224223512 UCN 224223512UCN-224223512-U

Abstract

The utility model provides an ultra-precise part rapid forming die which comprises an upper die, a material injection port and forming cavities, wherein the top of the upper die is fixedly connected with the material injection port, a plurality of forming cavities are formed in the bottom of the upper die, the material injection port is communicated with the forming cavities after being split, a middle layer and a lower die are assembled below the upper die, and guide posts are fixedly connected to four corners of the top surface of the lower die. The utility model has the advantages that the flatness of the bottom of the product can be ensured, and the problems of uneven and concave bottom and the like possibly caused by the factors of raw material flow, cooling shrinkage and the like of the bottom of the product can be eliminated by rotating the shaping plug, so that the bottom of the product is smoother and smoother, and meets the design requirements. The bottom shape precision is optimized, namely, the product needs to be tightly matched with other parts, the shape of the bottom of the product can be accurately molded by rotating and shaping the shaping plug, the matching precision of the bottom of the product and the other parts is ensured, and the assembly performance and the use reliability of the product are improved.

Inventors

  • LI WEI
  • CHEN XIANJUN
  • GONG SHIXIONG
  • HUANG HONGWAN
  • LI ZHUO

Assignees

  • 深圳市正工精密五金塑胶有限公司

Dates

Publication Date
20260512
Application Date
20250613

Claims (6)

  1. 1. The rapid molding die for the ultra-precise parts is characterized by comprising an upper die (1), a material injection port (2) and molding cavities (3), wherein the material injection port (2) is fixedly connected to the top of the upper die (1), a plurality of molding cavities (3) are formed in the bottom of the upper die (1), and the material injection port (2) is communicated with the molding cavities (3) after being shunted; A middle layer (4) and a lower die (5) are assembled below the upper die (1), guide posts (6) are fixedly connected to four corners of the top surface of the lower die (5), the outer surfaces of the guide posts (6) are movably connected with the middle layer (4), and the outer surfaces of the guide posts (6) are movably connected with the upper die (1); A spring (7) is fixedly connected between the bottom of the middle layer (4) and the top surface of the lower die (5), a plurality of reserved sleeves (8) are arranged on the middle layer (4), the upper parts of the reserved sleeves (8) are in butt joint with the forming cavity (3), and a shaping plug (9) is movably connected in the reserved sleeves (8); The side surface of the lower die (5) is fixedly connected with an air cylinder (10), the output end of the air cylinder (10) is fixedly connected with a rack (11), and the rack (11) is movably connected inside the lower die (5); One side swing joint of rack (11) has master gear (12), the top coaxial coupling of master gear (12) has another master gear (12), and here around swing joint of master gear (12) has a plurality of pinion (13), the top fixedly connected with main shaft (14) of pinion (13), the top and the plastic stopper (9) fixed connection of main shaft (14), main shaft (14) and lower mould (5) swing joint.
  2. 2. The rapid molding die for ultra-precise parts according to claim 1, wherein the upper die (1), the middle layer (4) and the lower die (5) are made of cast iron, and the material injection port (2) is provided with four split ports and is communicated with the four molding cavities (3) one by one.
  3. 3. The rapid forming die for ultra-precise parts according to claim 2, wherein the middle layer (4) is liftable, and the reserved sleeve (8) is welded with the middle layer (4).
  4. 4. The rapid molding die for ultra-precise parts according to claim 3, wherein the reservation sleeve (8) is penetrated up and down, and a ceramic sealing ring is fixedly connected with a top opening of the reservation sleeve (8).
  5. 5. The rapid prototyping die for ultra-precise components as set forth in claim 4, wherein the shaping plug (9) is made of ceramic, and the shaping plug (9) is tapered with small end facing upwards.
  6. 6. The rapid prototyping die for ultra-precise components of claim 5, wherein the cylinder (10) is horizontally installed, and the rack can drive all the main gear (12), the auxiliary gear (13) and the shaping plug (9) to rotate during the action.

Description

Ultra-precise part rapid forming die Technical Field The utility model relates to the technical field of precision dies, in particular to a rapid forming die for ultra-precision parts. Background The injection mold is a core tool in plastic product production, and high-efficiency batch manufacturing of parts with complex shapes is realized by injecting molten plastic into a mold cavity and cooling and solidifying. In the field of precision part manufacturing, the precision and efficiency of a rapid forming die directly influence the product yield and the production cost. In the prior art, aiming at complex structural parts (such as a micro gear box shell, an optical connector and the like) with micron tolerance requirements, the conventional injection mold has the common technical bottleneck that the geometric precision of the bottom of a formed part is difficult to meet high matching requirements, so that the problems can be solved by providing an ultra-precise part rapid forming mold, the problems of uneven, concave and the like possibly generated at the bottom of a product due to the factors of raw material flow, cooling shrinkage and the like can be solved, the bottom of the product is smoother and smoother, the design requirements are met, the matching precision of the bottom of the product and other parts is ensured, and the assembly performance and the use reliability of the product are improved. Disclosure of utility model The object of the present utility model is to solve at least one of the technical drawbacks. Therefore, an object of the present utility model is to provide a rapid forming mold for ultra-precise parts, so as to solve the problems mentioned in the background art and overcome the defects existing in the prior art. In order to achieve the above purpose, an embodiment of one aspect of the present utility model provides a rapid molding die for ultra-precise parts, which comprises an upper die, a material injection port and molding cavities, wherein the top of the upper die is fixedly connected with the material injection port, the bottom of the upper die is provided with a plurality of molding cavities, and the material injection port is communicated with the molding cavities after being shunted; The lower part of the upper die is clamped with a middle layer and a lower die, four corners of the top surface of the lower die are fixedly connected with guide posts, the outer surfaces of the guide posts are movably connected with the middle layer, and the outer surfaces of the guide posts are movably connected with the upper die; A spring is fixedly connected between the bottom of the middle layer and the top surface of the lower die, a plurality of reserved sleeves are arranged on the middle layer, the upper parts of the reserved sleeves are in butt joint with the forming cavity, and a shaping plug is movably connected in the reserved sleeves; The side surface of the lower die is fixedly connected with a cylinder, the output end of the cylinder is fixedly connected with a rack, and the rack is movably connected in the lower die; One side swing joint of rack has the master gear, the top coaxial coupling of master gear has another master gear, and here the swing joint has a plurality of pinion around the master gear, the top fixedly connected with main shaft of pinion, the top and the plastic stopper fixed connection of main shaft, main shaft and lower mould swing joint. By any of the above schemes, preferably, the upper die, the middle layer and the lower die are made of cast iron, and the material injection port is provided with four split-flow ports and is communicated with the four forming cavities one by one. By adopting the technical scheme, the part in the die can be rapidly formed and is precisely formed. The basic working process of the die comprises the steps of pressing down an upper die to form a die, compressing a spring, integrally closing a middle layer, an upper die and a lower die, butting a forming cavity with a reserved sleeve of the middle layer at the moment, enabling a shaping plug to enter the reserved sleeve, and plugging a top opening of the reserved sleeve; The molten raw materials are injected through the material injection port, the molten raw materials enter a molding cavity for product molding after being split, after primary molding, the output end of the air cylinder is ejected, the rack moves to drive the main gear to rotate, the main gear drives all the auxiliary gears and the shaping plugs to rotate, the bottoms of products in the molding cavity are shaped, and then the products are molded. The bottom flatness can be ensured by rotating the shaping plug, so that the problems of uneven and concave bottom of the product possibly caused by raw material flow, cooling shrinkage and other factors can be solved, and the bottom of the product is smoother and smoother, thereby meeting the design requirements. The bottom shape precision is optimized, namely, the pr