CN-224210410-U - Umbrella rib-shaped product injection mold structure made of PP (Polypropylene) material

CN224210410UCN 224210410 UCN224210410 UCN 224210410UCN-224210410-U

Abstract

The utility model relates to the technical field of injection molding, and discloses an injection mold structure of an umbrella rib-shaped product made of a PP material. The injection mold structure of the rib-shaped product of the PP material is provided with a sectional injection technology, each group of independent cavities is provided with two groups of hot runners, the injection process is divided into a plurality of stages, the injection speed and the injection pressure are regulated according to filling requirements of different areas, the uniform flow of the PP material in the complex rib structure can be ensured, the defects of bubbles, shrinkage and the like are avoided, a plurality of small runners are arranged in the mold, particularly in the detail part of the rib, the design of the small runners is adopted, the PP material can uniformly flow in the complex cavity, the phenomenon of unsmooth flow or incomplete injection molding is avoided, and the problems of poor flowability, incomplete filling, long molding cycle and buckling deformation of the traditional mold in the injection process are solved.

Inventors

ZHANG YUANKE
LIN JIALIANG
LI MENG
Zeng Qiuna
LONG SHI
Yi Mingxiu
CHEN SHUYU
KE CHENGLI
ZHANG ZHIXIAO

Assignees

河源市山德实业有限公司

Dates

Publication Date: 20260508
Application Date: 20250512

Claims (8)

1. The umbrella rib-shaped product injection mold structure of the PP material comprises a lower mold (1) and an upper mold (10) and is characterized in that the right side of the lower mold (1) is provided with the upper mold (10), cavities (7) are respectively arranged in the two ends of the right side of the lower mold (1), hot runners (11) are respectively fixed in the two ends of the right side of the upper mold (10), a main pipe (13) is arranged on the right side of the upper mold (10), a plurality of groups of guide rods (8) are respectively arranged in the two ends of the right side of the lower mold (1) in the cavities (7), inner holes (9) are respectively arranged in the four corners of the left side of the upper mold (10), the guide rods (8) penetrate through the inner holes (9), and a controller (25) is arranged at the bottom of the front end of the lower mold (1).
2. The injection mold structure for umbrella-shaped products according to claim 1, wherein the hot runner (11) penetrates through the upper mold (10), and the left side of the branched pipe (12) is fixedly connected with the right side of the hot runner (11).
3. The umbrella rib-shaped product injection mold structure according to claim 1, wherein the branched pipes (12) are respectively provided with a plurality of groups at two ends of the left side of the main pipe (13), and the hot runner (11) is respectively provided with a plurality of groups at two ends of the right side of the inner hole (9).
4. The rib-shaped product injection mold structure according to claim 1, wherein a plurality of groups of installation grooves (21) are respectively arranged in the top end and the bottom end of the left side of the cavity (7), heating strips (22) are fixed in the installation grooves (21), installation cavities (24) are respectively arranged at the two ends of the top end and the bottom end of the right side of the lower mold (1), and temperature sensors (23) are arranged in the installation cavities (24).
5. The umbrella rib-shaped product injection mold structure of claim 1, wherein a first cooling flow passage (16) is formed in the front end of the left side inside the lower mold (1), a first liquid inlet (15) is formed in the front end of the top of the lower mold (1), a first liquid outlet (20) is formed in the front end of the bottom of the lower mold (1), a second cooling flow passage (18) is formed in the rear end of the left side inside the lower mold (1), a second liquid inlet (17) is formed in the rear end of the top of the lower mold (1), and a second liquid outlet (19) is formed in the rear end of the bottom of the lower mold (1).
6. The injection mold structure of umbrella rib-shaped products of claim 5, wherein the first liquid inlet (15) and the first liquid outlet (20) are respectively communicated with the inside of the first cooling runner (16), and the second liquid inlet (17) and the second liquid outlet (19) are respectively communicated with the inside of the second cooling runner (18).
7. The umbrella rib-shaped product injection mold structure of claim 1, wherein the left side of the lower mold (1) is fixedly provided with a mounting frame (2), the left side inside the mounting frame (2) is provided with a connecting plate (4), the top of the left side of the mounting frame (2) is fixedly provided with a cylinder II (5), the bottom of the left side of the mounting frame (2) is fixedly provided with a cylinder I (3), the two ends of the right side of the connecting plate (4) are respectively fixedly provided with a thimble (6), and the left side inside of the cavity (7) is provided with an ejection hole (14).
8. The injection mold structure of umbrella rib-shaped products of claim 7, wherein the output ends of the first cylinder (3) and the second cylinder (5) penetrate through the left side of the mounting frame (2) respectively and are fixedly connected with the left side of the connecting plate (4), a plurality of groups of ejector pins (6) are arranged at the two ends of the right side of the connecting plate (4) respectively, and the right side of each ejector pin (6) penetrates through the inside of the ejection hole (14).

Description

Umbrella rib-shaped product injection mold structure made of PP (Polypropylene) material Technical Field The utility model relates to the technical field of injection molding, in particular to an injection mold structure of an umbrella rib-shaped product made of a PP material. Background The rib-shaped products are usually injection molding technology, and the design of the mold and the injection process in the injection molding process are high due to the complex shape and structure. The PP (polypropylene) material is widely applied to the manufacture of umbrella ribs due to good chemical stability, high rigidity and toughness. However, the conventional mold has problems of poor fluidity, incomplete filling, long molding cycle, buckling deformation, and the like in the injection molding process. How to optimize the mold structure, improve the injection molding efficiency, reduce the injection molding defects, and ensure the dimensional accuracy of the umbrella rib-shaped product, is a technical problem in the injection molding field of the umbrella rib-shaped product at present. At present, a novel rib-shaped product injection mold structure made of PP materials is provided to solve the defects. Disclosure of utility model The utility model aims to provide an injection mold structure of an umbrella rib-shaped product made of a PP material, which aims to solve the problems of poor flowability, incomplete filling, long molding cycle and buckling deformation of the traditional mold in the injection molding process. In order to achieve the purpose, the utility model provides the technical scheme that the umbrella rib-shaped product injection mold structure of the PP material comprises a lower mold and an upper mold, wherein the right side of the lower mold is provided with the upper mold, the interiors of the two ends of the right side of the lower mold are respectively provided with a cavity, the interiors of the two ends of the right side of the upper mold are respectively fixed with a hot runner, the right side of the upper mold is provided with a main pipe, the left side of the main pipe is fixed with a branch pipe, the interiors of the two ends of the right side of the lower mold are respectively provided with a plurality of groups of cavities, four corners of the right side of the lower mold are respectively fixed with guide rods, the interiors of the four corners of the left side of the upper mold are respectively provided with an inner hole, the guide rods penetrate through the interiors of the inner hole, and the bottom of the front end of the lower mold is provided with a controller. As a further technical scheme of the utility model, the hot runner penetrates through the inner part of the upper die, and the left side of the branched pipe is fixedly connected with the right side of the hot runner. As a further technical scheme of the utility model, the branch pipes are respectively provided with a plurality of groups at the two ends of the left side of the main pipe, and the hot runner is respectively provided with a plurality of groups at the two ends of the right side of the inner hole. As a further technical scheme of the utility model, a plurality of groups of mounting grooves are respectively arranged in the top end and the bottom end of the left side of the cavity, heating strips are fixed in the mounting grooves, mounting cavities are respectively arranged at the two ends of the top and the bottom of the right side of the lower die, and temperature sensors are arranged in the mounting cavities. As a further technical scheme of the utility model, a first cooling flow passage is arranged at the front end of the left side inside the lower die, a first liquid inlet is fixed at the front end of the top of the lower die, a first liquid outlet is fixed at the front end of the bottom of the lower die, a second cooling flow passage is arranged at the rear end of the left side inside the lower die, a second liquid inlet is fixed at the rear end of the top of the lower die, and a second liquid outlet is fixed at the rear end of the bottom of the lower die. As a further technical scheme of the utility model, the first liquid inlet and the first liquid outlet are respectively communicated with the interior of the first cooling flow channel, and the second liquid inlet and the second liquid outlet are respectively communicated with the interior of the second cooling flow channel. As a further technical scheme of the utility model, the left side of the lower die is fixedly provided with the mounting frame, the left side of the inside of the mounting frame is provided with the connecting plate, the top of the left side of the mounting frame is fixedly provided with the second cylinder, the bottom of the left side of the mounting frame is fixedly provided with the first cylinder, the two ends of the right side of the connecting plate are respectively fixedly provided with the ejector pins, and the inside of th