Material accumulation prevention runner, insert thereof and injection mold feeding system
By setting an acceleration curved surface at the offset port of the runner insert, changing the inner diameter distribution and material flow rate, the problem of difficulty in bonding and residual cleaning of high viscosity materials is solved, and efficient cleaning of the runner and improvement of production efficiency is achieved.
Patent Information
- Application Number
- CN202421315128.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-07
AI Technical Summary
After the existing runner inserts are inputted with high viscosity materials, the materials are easily bonded to the inner wall, resulting in subsequent material blending and the residue is difficult to clean, affecting production efficiency.
A material-proof flow channel insert is designed. By setting an acceleration curve at the offset port, the inner diameter distribution is changed, thereby changing the material flow rate, so that the material is at the output end of the valve needle groove, making it suitable for cleaning of residues.
Effectively prevent the residual material in the previous time and the added material in the next time, improve the flow channel cleaning efficiency, and reduce production time and material waste.
Smart Images
Figure CN222792658U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of plastic processing, in particular to an anti-material accumulation flow channel and an insert thereof and an injection mold feeding system. Background Art
[0002] Inserts are mainly used in the parts of the mold that are prone to wear and provide auxiliary molding for the mold. Usually, in the mold closing state, the insert slides into the mold and forms a cavity with the mold. The existing runner inserts will have channels inside them for conveying materials. For highly viscous materials, they will adhere to the inner wall after being input into the runner insert, resulting in the next time different materials are passed into the runner insert, the previous material cannot be cleaned up and is mixed into the second material, so that the second material is mixed into the second material. The material in the insert is difficult to clean, and often requires a large amount of second material to flush the inner wall, which takes a long time and has a low cleaning effect. Utility Model Content
[0003] The purpose of the utility model is to provide an anti-accumulation flow channel insert, which can install a valve needle in a valve needle groove, and change the inner diameter distribution of the offset port by setting an acceleration curved surface at the offset port, thereby changing the flow rate of the material at the offset port, so that the speed of the material passing through the output end of the valve needle groove can be reduced, which is convenient for effectively cleaning the residual material at the valve needle during secondary material distribution.
[0004] The utility model also provides an anti-material accumulation flow channel, which is provided with the anti-material accumulation flow channel insert.
[0005] The utility model also provides an injection mold feeding system, which is provided with the above-mentioned anti-material accumulation flow channel.
[0006] The valve needle is mounted on the valve needle
[0007] To achieve this purpose, the utility model adopts the following technical solutions:
[0008] An anti-accumulation flow channel insert is provided with a feed inner cavity and a valve needle groove;
[0009] The feed inner cavity is provided with a feed port, a deflection port and a discharge port which are connected in sequence;
[0010] The offset port is provided with an acceleration curved surface, which separates the input end and the output end of the offset port and forms a narrowing zone and a widening zone; the inner diameter of the narrowing zone gradually decreases toward the center of the offset port and is connected to the widening zone at the smallest inner diameter; the inner diameter of the widening zone gradually increases away from the center of the offset port and is connected to the discharge port at the largest inner diameter;
[0011] The valve needle groove is connected to the offset port and faces the discharge port; the output end of the valve needle groove passes through the output end of the narrowing area and the input end of the widening area in sequence; the valve needle groove is used to install the valve needle.
[0012] Preferably, the feed port and the discharge port face in different directions respectively.
[0013] Preferably, the feed inlet and the discharge outlet are perpendicular to each other; the feed inlet is horizontally oriented, and the discharge outlet is vertically oriented downward.
[0014] Preferably, the output end of the widened zone is coaxially arranged with the discharge port; the ratio between the outer diameter of the output end of the widened zone and the inner diameter of the discharge port is 1:(1-3).
[0015] Preferably, it comprises: an outer seat and an inner seat;
[0016] The outer seat is provided with a first feed branch and a matching groove; the inner seat is installed in the matching groove; the inner seat is provided with a second feed branch, as well as the offset port, the discharge port and the valve needle groove; the second feed branch is docked with the first feed branch and connected to form the feed port.
[0017] Preferably, the outer seat is provided with a plurality of the first feed openings, and the second feed opening is docked with and communicated with one of the first feed openings.
[0018] Preferably, the inner seat is rotatably mounted on the matching groove; the inner seat is rotated to connect the second feed opening to one of the first feed openings.
[0019] A flow channel for preventing material accumulation, comprising: a valve needle and the above-mentioned flow channel insert for preventing material accumulation;
[0020] The valve needle is installed in the valve needle groove and extends into the offset port and the discharge port.
[0021] An injection mold feeding system is provided with the above-mentioned anti-material accumulation flow channel.
[0022] Compared with the prior art, one of the above technical solutions has the following beneficial effects:
[0023] The present solution provides an anti-material accumulation flow channel insert, which can install a valve needle in a valve needle groove, and by setting an acceleration surface at the offset port to change the inner diameter distribution of the offset port, the flow rate of the material at the offset port can be changed. The speed of the material passing through the output end of the valve needle groove can be increased, which is convenient for effectively cleaning the material remaining at the valve needle during the secondary feeding, preventing the residual material from the previous feeding from being mixed into the subsequent material, and solving the problem of difficulty in cleaning the residual material in the flow channel. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a structural schematic diagram of one embodiment of an anti-accumulation flow channel insert;
[0025] Figure 2 This is a schematic structural diagram of one embodiment of an anti-material accumulation flow channel;
[0026] Figure 3 It is a schematic diagram of the exploded structure of one embodiment of the anti-material accumulation flow channel insert.
[0027] in:
[0028] Anti-material accumulation flow channel insert 1; valve needle 2;
[0029] Feed inner cavity 11, valve needle groove 12; outer seat 101, inner seat 102;
[0030] First feed opening 1011, matching groove 1012; second feed opening 1021;
[0031] Feed port 111, offset port 112, discharge port 113;
[0032] Acceleration surface 1120 ; narrowing area 1121 , widening area 1122 . DETAILED DESCRIPTION
[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0034] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", "inner side", "outer side", "inner end", "outer end", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features, which are used to distinguish and describe the features, without distinction of order or importance. In the description of the present utility model, unless otherwise specified, "multiple" means more than two.
[0035] like Figure 1-3, an anti-accumulation flow channel insert, provided with a feed cavity 11 and a valve needle groove 12;
[0036] The feed inner cavity 11 is provided with a feed port 111, a deflection port 112 and a discharge port 113 which are connected in sequence;
[0037] The offset port 112 is provided with an acceleration curved surface 1120, which separates the input end and the output end of the offset port 112, and forms a narrowing area 1121 and a widening area 1122; the inner diameter of the narrowing area 1121 gradually decreases toward the center of the offset port 112, and is connected to the widening area 1122 at the smallest inner diameter; the inner diameter of the widening area 1122 gradually increases away from the center of the offset port 112, and is connected to the discharge port 113 at the largest inner diameter;
[0038] The valve needle groove 12 is connected to the offset port 112 and faces the discharge port 113; the output end of the valve needle groove 12 passes through the output end of the narrowing area 1121 and the input end of the widening area 1122 in sequence; the valve needle groove 12 is used to install the valve needle 2.
[0039] The present solution provides an anti-material accumulation flow channel insert, which can install the valve needle 2 in the valve needle groove 12, and set an acceleration surface 1120 at the offset port 112 to change the inner diameter distribution of the offset port 112, thereby changing the flow rate of the material at the offset port 112, so that the speed of the material passing through the output end of the valve needle groove 12 can be increased, which is convenient for effectively cleaning the residual material at the valve needle 2 during the secondary feeding, preventing the residual material from the previous feeding from being mixed into the subsequent material, and solving the problem that the residual material in the flow channel is difficult to clean.
[0040] Specifically, the anti-accumulation runner insert 1 can be used to convey liquid materials or molten materials, as a mechanism for receiving, outputting, transferring, etc. of materials; the materials can be heated first, and then input into the anti-accumulation runner insert 1. The following takes molten materials as an example, such as plastic heated to melt; the plastic is input into the anti-accumulation runner insert 1 from the feed port 111, and is input into the offset port 112 through the feed port 111; the offset port 112 is provided with an acceleration surface 1120, and the acceleration surface 1120 is arranged between the input end and the output end of the offset port 112, thereby separating the input end and the output end of the offset port 112, forming a narrowing area 1121 at the input end of the offset port 112, and forming a widening area 1122 at the output end of the offset port 112; at the same time, the narrowing area 112 1 gradually decreases from the outside to the middle of the offset port 112; in this way, after the plastic enters the input of the offset port 112, the inner diameter of the narrowing zone 1121 decreases on the basis of the constant flow rate, so that the flow rate of the plastic in the narrowing zone 1121 increases, and the flow rate is the maximum at the point where the inner diameter of the narrowing zone 1121 is the smallest; the narrowing zone 1121 is connected to the widening zone 1122; on the basis of the constant flow rate, the inner diameter of the widening zone 1122 increases, so that the flow rate of the plastic in the widening zone 1122 decreases, and the flow rate is the maximum at the point where the inner diameter of the widening zone 1122 is the largest. The flow rate is the smallest; in this way, the plastic has different flow rates at different positions of the offset port 112; the valve needle groove 12 is connected to the offset port 112, the valve needle groove 12 is used to install the valve needle 2, and the output end of the valve needle groove 12 passes through the output end of the narrowing area 1121 and the input end of the widening area 1122; after the valve needle 2 is installed in the valve needle groove 12, after the first material is passed into the anti-accumulation flow channel insert 1, the first material will remain at the output end of the valve needle 2 and its valve needle groove 12; in this regard, the output end of the valve needle groove 12 passes through the narrowing area 112 in sequence. 1 and the input end of the widened area 1122; when the anti-accumulation flow channel insert 1 completes the feeding of the first material and then introduces the second material, the second material can be introduced first, and the second material can be used to flush the feed port 111, the offset port 112 and the discharge port 113; the second material has the largest flow rate in the narrowed area 1121 in the offset port 112, and the first material remaining in the valve needle 2 and its valve needle groove 12 can be flushed, so that it can be output together with the second material outside the discharge port 113; finally, the second material can be formally introduced. In this way, the internal shape of the offset port 112 designed in this scheme can facilitate the cleaning of the residues of the first material through the structure of the offset port 112, solving the problem that the residual material in the flow channel is difficult to clean.
[0041] Preferably, the feed port 111 and the discharge port 113 face in different directions respectively.
[0042] The shape of the feed cavity 11 can be determined according to actual conditions. For example, in one embodiment, the feed port 111, the offset port 112 and the discharge port 113 form a linear feed cavity 11; for example, in one embodiment, the feed port 111, the offset port 112 and the discharge port 113 form an S-shaped feed cavity 11;
[0043] In the most preferred embodiment,
[0044] More preferably, the feed port 111 and the discharge port 113 are perpendicular to each other; the feed port 111 is horizontally oriented, and the discharge port 113 is vertically oriented downward.
[0045] When the feed port 111 and the discharge port 113 are perpendicular to each other, the feed port 111 and the discharge port 113 transition through the offset port 112; and when the discharge port 113 is facing vertically downward, the valve needle groove 12 is straightly facing the discharge port 113, so the valve needle 2 is equivalent to being perpendicular to the feed port 111, and the feed port 111 is horizontally oriented; the discharge port 113 is facing downward, and after the valve needle 2 is installed in the valve needle groove 12, the valve needle 2 extends downward into the discharge port 113; the plastic can enter the feed port 111 horizontally, and contact the output end of the valve needle groove 12 at a horizontal flow rate, thereby flushing the outer wall of the valve needle 2 and the inner wall of the valve needle groove 12, and the flushed material can fall under the action of gravity and be transferred after passing through the discharge port 113.
[0046] Preferably, the output end of the widened zone 1122 is coaxially arranged with the discharge port 113; the ratio between the outer diameter of the output end of the widened zone 1122 and the inner diameter of the discharge port 113 is 1:(1-3).
[0047] The widened zone 1122 and the discharge port 113 are coaxially connected; when the ratio between the outer diameter of the output end of the widened zone 1122 and the inner diameter of the discharge port 113 is 1:1, the widened zone 1122 and the discharge port 113 can be seamlessly connected; when the inner diameter of the discharge port 113 is larger than the outer diameter of the output end of the widened zone 1122, so that the ratio is greater than 1:1, after the material is transferred from the widened zone 1122 to the discharge port 113, the discharge port 113 can have enough space to receive more material; at the same time, since the widened zone 1122 and the discharge port 113 are coaxial, and the inner diameter of the discharge port 113 is larger than the outer diameter of the output end of the widened zone 1122, the material output from the widened zone 1122 falls under the action of gravity, which can prevent the material from remaining on the inner wall of the discharge port 113.
[0048] Preferably, it comprises: an outer seat 101 and an inner seat 102;
[0049] The outer seat 101 is provided with a first feed branch port 1011 and a matching groove 1012; the inner seat 102 is installed in the matching groove 1012; the inner seat 102 is provided with a second feed branch port 1021, as well as the offset port 112, the discharge port 113 and the valve needle groove 12; the second feed branch port 1021 is connected with the first feed branch port 1011 and connected to form the feed port 111.
[0050] The anti-accumulation flow channel insert 1 of this solution can be an integrated structure or a split structure. For the split structure, it can include an outer seat 101 and an inner seat 102; the outer seat 101 is provided with a first feed branch 1011 and a matching groove 1012, and the matching groove 1012 can be used to accommodate the inner seat 102 to fix the position of the inner seat 102; when the inner seat 102 is fixed, the second feed branch 1021 of the inner seat 102 is docked with the first feed branch 1011, thereby forming the feed port 111 of the anti-accumulation flow channel insert 1; this solution uses a split structure, and the outer seat 101 or the inner seat 102 can be replaced as needed, which reduces the difficulty of processing.
[0051] Preferably, the outer seat 101 is provided with a plurality of the first feed openings 1011 , and the second feed opening 1021 is docked with and communicated with one of the first feed openings 1011 .
[0052] There are multiple first feed ports 1011 of the outer seat 101, and the first feed ports 1011 can be designed with different calibers, shapes or inner wall structures, etc.; therefore, the present invention can select a specific first feed port 1011 as needed to connect with the second feed port 1021 of the inner seat 102, thereby enriching the structure of the feed port 111.
[0053] Preferably, the inner seat 102 is rotatably mounted on the matching groove 1012 ; the inner seat 102 is rotated to connect the second feed opening 1021 to one of the first feed openings 1011 .
[0054] The outer seat 101 can be provided with a first feed port 1011 on different sides as needed. When the inner seat 102 is rotatably installed in the matching groove 1012, the inner seat 102 can be rotated to adjust the orientation angle of the second feed port 1021 of the inner seat 102, so that the inner seat 102 can be rotated to connect the second feed port 1021 with one of the first feed ports 1011.
[0055] A flow channel for preventing material accumulation, comprising: a valve needle 2 and the above-mentioned flow channel insert for preventing material accumulation 1;
[0056] The valve needle 2 is installed in the valve needle groove 12 and extends into the offset opening 112 and the discharge opening 113 .
[0057] The anti-material accumulation flow channel of this solution can prevent the residual material of the previous feeding from being mixed into the subsequent material, thereby solving the problem that the residual material in the flow channel is difficult to clean.
[0058] An injection mold feeding system is provided with the above-mentioned anti-material accumulation flow channel.
[0059] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A flow channel insert for preventing material accumulation, characterized in that: A feed inner cavity and a valve needle groove are provided; The feed inner cavity is provided with a feed port, a deflection port and a discharge port which are connected in sequence; The offset port is provided with an acceleration curved surface, which separates the input end and the output end of the offset port and forms a narrowing zone and a widening zone; the inner diameter of the narrowing zone gradually decreases toward the center of the offset port and is connected to the widening zone at the smallest inner diameter; the inner diameter of the widening zone gradually increases away from the center of the offset port and is connected to the discharge port at the largest inner diameter; The valve needle groove is connected to the offset port and faces the discharge port; the output end of the valve needle groove passes through the output end of the narrowing area and the input end of the widening area in sequence; the valve needle groove is used to install the valve needle.
2. The anti-material accumulation runner insert according to claim 1, characterized in that: The feed port and the discharge port face different directions respectively.
3. The anti-material accumulation runner insert according to claim 2, characterized in that: The feed inlet and the discharge outlet are perpendicular to each other; the feed inlet is horizontally oriented, and the discharge outlet is vertically oriented downward.
4. The anti-material accumulation runner insert according to claim 3, characterized in that: The output end of the widened zone is coaxially arranged with the discharge port; the ratio between the outer diameter of the output end of the widened zone and the inner diameter of the discharge port is 1:(1-3).
5. The anti-material accumulation runner insert according to any one of claims 1 to 4, characterized in that: include: Outer and inner seats; The outer seat is provided with a first feed branch and a matching groove; the inner seat is installed in the matching groove; the inner seat is provided with a second feed branch, as well as the offset port, the discharge port and the valve needle groove; the second feed branch is docked with the first feed branch and connected to form the feed port.
6. The anti-material accumulation runner insert according to claim 5, characterized in that: The outer seat is provided with a plurality of the first feed openings, and the second feed opening is butted against and communicated with one of the first feed openings.
7. The anti-material accumulation runner insert according to claim 6, characterized in that: The inner seat is rotatably mounted on the matching groove; the inner seat is rotated to connect the second feed opening to one of the first feed openings.
8. A flow channel for preventing material accumulation, characterized in that: include: A valve needle and an anti-material accumulation flow channel insert as claimed in any one of claims 1 to 7; The valve needle is installed in the valve needle groove and extends into the offset port and the discharge port.
9. An injection mold feeding system, characterized in that: A material accumulation prevention flow channel as claimed in claim 8 is provided.