CN-111152420-B - Wave-type flow distribution channel system for super-multi-cavity product

CN111152420BCN 111152420 BCN111152420 BCN 111152420BCN-111152420-B

Abstract

The invention provides a wave-shaped flow dividing channel system for a supermultimode cave product, which is characterized in that a cross flow channel is provided with a wave-shaped flow channel wall which is concave inwards, and two sides of the wave-shaped flow channel wall are respectively inclined relative to a vertical flow channel which is correspondingly connected. Compared with the prior art, the angle of the transverse runner and the vertical runner is controlled through the wave-shaped structure of the wave-shaped runner wall, so that shearing of the melt adhesive is reduced, the shearing size can be controlled through the angle, and further, the generated backflow is conveniently regulated and controlled, and the overall temperature and pressure of the melt adhesive are more uniform. Moreover, the shape of the inner surface of the wavy flow passage wall is a smooth transition surface, so that the shearing can be further reduced.

Inventors

Zhou wohua
HUANG XIANBO
YE NANBIAO
GUAN ANNAN
HUANG MINGYU
ZHOU QIXIONG
HU GUI
YAN YANG
WANG HAILAN

Assignees

金发科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20200218

Claims (6)

1. The wave-shaped flow dividing channel system for the super-multi-cavity product is characterized by comprising a main channel, a flow dividing channel, a plurality of transverse flow channels and a plurality of vertical flow channels, wherein the flow dividing channel is connected with the main channel, the plurality of vertical flow channels are arranged into a plurality of groups, more than one vertical flow channel is arranged in each group, the transverse flow channels are distributed and connected between every two adjacent groups of vertical flow channels, and one transverse flow channel is connected with the flow dividing channel so as to realize that the flow dividing channel can convey materials to each group of vertical flow channels through the transverse flow channels; The cross flow channels connected with the flow dividing channels are arranged as proximal cross flow channels, the cross flow channels far away from the proximal end are arranged as distal cross flow channels, each cross flow channel is provided with a wave-shaped channel wall which is concave inwards from the proximal cross flow channel to the distal cross flow channel, two sides of the wave-shaped channel wall are respectively inclined relative to the vertical channels correspondingly connected with the wave-shaped channel wall, and the inner surface of the wave-shaped channel wall is a smooth transition surface; The sinking degree of each wave-shaped flow channel wall is gradually reduced from the transverse flow channel at the near end to the transverse flow channel at the far end, so that the inclination angles of the two sides of each wave-shaped flow channel wall and the corresponding vertical flow channels are gradually reduced; The two sides of the wavy flow passage wall are symmetrical, so that the inclination angles between two adjacent groups of vertical flow passages and the wavy flow passage wall are the same; The inclination angles of the two sides of the wavy flow passage wall between the near-end transverse flow passage and the far-end transverse flow passage and the corresponding vertical flow passage are , Wherein A1 is the inclination angle of the two sides of the wavy flow channel wall at the near end and the vertical flow channel connected with each other, ak is the inclination angle of the two sides of the wavy flow channel wall at the far end and the vertical flow channel connected with each other, A1 is more than or equal to Ak, i is the number of i cross flow channels counted from the cross flow channel at the near end, k is the total number of the cross flow channels from the cross flow channel at the near end to the cross flow channel at the far end, k is more than or equal to i, and Ai is the inclination angle of the two sides of the wavy flow channel wall at the i-th and the vertical flow channel connected with each other; the inclination angle between the two sides of the wave-shaped flow channel wall at the near end and the vertical flow channel connected with the wave-shaped flow channel wall at the far end is smaller than 150 degrees, and the inclination angle between the two sides of the wave-shaped flow channel wall at the far end and the vertical flow channel connected with the wave-shaped flow channel wall at the far end is larger than 90 degrees.
2. The wave-type flow divider system for a supercavity product according to claim 1, wherein the flow divider comprises a primary flow divider and a secondary flow divider, the primary flow divider is connected to a plurality of primary flow dividers, each primary flow divider is connected to a plurality of secondary flow dividers, and the secondary flow dividers are connected to the transverse flow divider.
3. The wave-type split runner system for a supercavity product according to claim 2, wherein a plurality of sets of the vertical runners and a plurality of the cross runners are combined into a plurality of rows of pouring assemblies, each row of pouring assemblies has a plurality of sets of the vertical runners therein, and the secondary split runners are distributed between every two adjacent rows of pouring assemblies and are respectively connected with the cross runners on every two rows of pouring assemblies.
4. The wave-type manifold system for super-multi-cavity products of claim 1, wherein one set of said vertical flow channels comprises 1 said vertical flow channel.
5. The wave-type flow distribution channel system for super-multi-cavity products according to claim 1, wherein one set of said vertical channels comprises more than 2 vertical channels combined into one bundle.
6. The wave-shaped runner system for a supercavity product according to claim 1, wherein the length of the inwardly recessed region of the wave-shaped runner wall is equal to the distance between two adjacent sets of the risers.

Description

Wave-type flow distribution channel system for super-multi-cavity product Technical Field The invention relates to the technical field of injection molding, in particular to a wave-shaped diversion channel system for a super-multi-cavity product. Background In the process of polymer injection molding, the melt adhesive rapidly enters a runner through injection molding pressure and is then poured into a mold cavity. The existing pouring system generally requires the pressure loss to be as small as possible, so that the injection pressure can be uniformly transmitted to each part of the die cavity, and further, a plastic product with clear appearance and excellent quality can be obtained, and therefore, the length-diameter ratio of each pouring channel is designed to be smaller as much as possible. However, in the case of a super multi-cavity product having 500 or more cavities, since there are a large number of cavities to be poured, it is necessary to have a sufficient length of the lower runner extending from the main runner in order to improve injection efficiency, and thus the aspect ratio of the lower runner is large, and the pressure loss at the junction of the runners is relatively large, so that it is necessary to provide a large injection pressure. However, when the melt adhesive flows between the runners, the overall temperature and the pressure are not uniform, so that the product performance is not uniform, and some of the melt adhesive can not meet the performance requirements. Disclosure of Invention In order to overcome the defects in the prior art, the invention provides a wave-shaped diversion channel system for a supermultimode cavity product, which is suitable for pouring the supermultimode cavity product with more than 500 mold cavities, and the specific technical scheme is as follows: The wave-shaped flow dividing channel system for the super-multi-cavity product comprises a main flow channel, a sub-flow channel, a plurality of transverse flow channels and a plurality of vertical flow channels, wherein the sub-flow channels are connected with the main flow channel, the vertical flow channels are arranged into a plurality of groups, more than one vertical flow channel is arranged in each group, the transverse flow channels are distributed and connected between every two adjacent groups of vertical flow channels, and one transverse flow channel is connected with the sub-flow channel so as to realize that the sub-flow channels can convey materials to the vertical flow channels through the transverse flow channels; The cross flow channels connected with the flow dividing channels are arranged as proximal cross flow channels, the cross flow channels far away from the proximal end are distal cross flow channels, each cross flow channel is provided with an inwards concave wavy flow channel wall from the proximal cross flow channel to the distal cross flow channel, two sides of the wavy flow channel wall are respectively inclined relative to the vertical flow channels correspondingly connected with the wavy flow channel wall, and the inner surface of the wavy flow channel wall is smooth transition surface. In a specific embodiment, the wavy flow channel walls are symmetrical on both sides, so that the inclination angles between two adjacent groups of vertical flow channels and the wavy flow channel walls are the same. In a specific embodiment, from the transverse flow channel at the proximal end to the transverse flow channel at the distal end, the concave degree of each wave-shaped flow channel wall is the same, so that the inclination angles of the two sides of each wave-shaped flow channel wall and the corresponding connected vertical flow channel are the same. In a specific embodiment, the concave degree of each wave-shaped flow channel wall gradually decreases from the transverse flow channel at the near end to the transverse flow channel at the far end, so that the inclination angles of the two sides of each wave-shaped flow channel wall and the corresponding connected vertical flow channels gradually decrease. In a specific embodiment, the inclination angles of the two sides of the wavy flow channel wall between the proximal and distal flow channels and the corresponding vertical flow channels are Ai=(Al+Ak)*i/k, Wherein A1 is the inclination angle of the two sides of the wavy flow channel wall at the near end and the vertical flow channel connected with each other, ak is the inclination angle of the two sides of the wavy flow channel wall at the far end and the vertical flow channel connected with each other, A1 is more than or equal to Ak, i is the number of i cross flow channels counted from the cross flow channel at the near end, k is the total number of the cross flow channels from the cross flow channel at the near end to the cross flow channel at the far end, k is more than or equal to i, and Ai is the inclination angle of the two sides of the wavy flow channel wall at the i-th and