Runner insert for preventing valve needle from deviating, runner structure and mold feeding system

Abstract

The utility model discloses a runner insert for preventing a valve needle from deviating, a runner structure and a mold feeding system, and the runner insert comprises an outer seat, an inner seat and an outer joint, the inner seat is mounted in an inner cavity of the runner; the outer side surface of the inner seat is partially concave, so that the concave position of the inner seat is separated from the inner wall of the runner inner cavity to form a transfer channel; the outer joint is mounted on the outer seat; the outer joint is provided with a discharging channel; the feeding channel, the transfer channel and the discharging channel are communicated in sequence; a valve needle mounting groove for mounting a valve needle is formed in the inner seat; and the valve needle mounting groove extends to the discharging channel from the runner inner cavity. According to the scheme, the valve needle is mounted through the valve needle mounting groove of the inner seat, and materials are transferred through the transfer channel on the outer side face of the inner seat, so that the valve needle is prevented from being directly impacted after being input from the feeding channel, the valve needle is protected, and the problem of position deviation caused by impact of the materials on the valve needle is solved.

Description

Technical Field

[0001] The utility model relates to the field of flow channel inserts, in particular to a flow channel insert for preventing valve needle deviation, a flow channel structure and a 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, when the mold is closed, the insert slides into the mold and forms a cavity together with the mold. The existing runner insert will be installed with a valve needle, and the valve needle can move to block or detach from the nozzle of the insert, so as to control the inflow and outflow of materials. In the existing insert, the valve needle is directly installed inside the insert, and when material is input into the insert, the material will impact the valve needle, which will cause wear on the surface of the valve needle on the one hand, and on the other hand, the position of the valve needle will deviate from the center axis position of the nozzle, so that the valve needle and the nozzle are not set concentrically, affecting the normal use of the valve needle. Utility Model Content

[0003] The utility model aims to provide a flow channel insert for preventing valve needle deviation, wherein an inner seat is arranged in the flow channel inner cavity of an outer seat, the valve needle is installed through the valve needle installation groove of the inner seat, and the material is transferred through the transfer channel on the outer side of the inner seat, thereby preventing the valve needle from being directly impacted after being input from the feed channel.

[0004] The utility model also provides a flow channel structure, which is provided with the above-mentioned flow channel insert for preventing the valve needle from deflecting.

[0005] The utility model also provides a mold feeding system, which is provided with the above-mentioned flow channel structure.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A flow channel insert for preventing valve needle deviation comprises: an outer seat, an inner seat and an outer joint;

[0008] The outer seat is provided with a flow channel inner cavity and a feed channel, and the output end of the feed channel is connected to the flow channel inner cavity; the inner seat is installed in the flow channel inner cavity; the outer side surface of the inner seat is partially concave, so that the concave position of the inner seat is separated from the inner wall of the flow channel inner cavity and forms a transfer channel; the outer joint is installed on the outer seat; the outer joint is provided with a discharge channel; the feed channel, the transfer channel and the discharge channel are connected in sequence;

[0009] A valve needle mounting groove for mounting a valve needle is provided inside the inner seat; the valve needle mounting groove extends from the inner cavity of the flow channel to the discharge channel.

[0010] Preferably, the inner seat comprises: a fixing member and an inner joint;

[0011] The fixing part is installed in the inner cavity of the flow channel; the inner joint is connected to the fixing part; the fixing part and the inner joint are both provided with the valve needle mounting grooves which are interconnected; the outer side surface of the fixing part and the inner cavity of the flow channel form the transfer channel; the inner joint extends into the discharge channel.

[0012] Preferably, the inner joint is provided with a guide ring; the guide ring is provided with surrounding guide openings on the outer edge of the fixing member; the transfer channel and the discharge channel are connected through the guide openings.

[0013] Preferably, the inner joint is provided with a joint body; one end of the joint body is connected to the guide ring, and the other end extends into the discharge channel; the inner diameter of the discharge channel gradually decreases in the direction from the guide ring to the joint body.

[0014] Preferably, the outer diameter of the joint body gradually decreases in the direction from the guide ring to the discharge channel; and the joint body and the discharge channel are coaxially arranged.

[0015] Preferably, the transfer channel is distributed around the outer side wall of the inner seat.

[0016] A flow channel structure, comprising: a valve needle and the above-mentioned flow channel insert for preventing the valve needle from deflecting;

[0017] The valve needle is installed in the valve needle installation groove, and the valve needle extends out of the valve needle installation groove at one end of the discharge channel.

[0018] A mold feeding system is provided with the above-mentioned flow channel structure.

[0019] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0020] The present solution provides a flow channel insert that prevents valve needle displacement, wherein an inner seat is arranged in the flow channel inner cavity of an outer seat, the valve needle is installed through the valve needle mounting groove of the inner seat, and a transfer channel on the outer side of the inner seat is used to transfer materials, thereby preventing the valve needle from being directly impacted after input from the feed channel. This has a protective effect on the valve needle and solves the problem of position displacement caused by the impact of the material on the valve needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic cross-sectional structure diagram of one embodiment of a flow channel insert;

[0022] Figure 2 It is a structural schematic diagram of one embodiment of the inner seat;

[0023] Figure 3 It is a schematic cross-sectional structure diagram of one embodiment of the valve needle installed in the inner seat;

[0024] Figure 4 It is a schematic diagram of the exploded structure of one embodiment of the flow channel insert.

[0025] in:

[0026] Outer seat 1, inner seat 2, outer joint 3; valve needle 4;

[0027] The flow channel cavity 11 and the feed channel 12;

[0028] Transfer channel 20; fixing member 21, inner joint 22; valve needle mounting groove 23; flow guide port 220; flow guide ring 221; joint body 222; discharge channel 31. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] like Figure 1-4 , a flow channel insert for preventing valve needle deviation, comprising: an outer seat 1, an inner seat 2 and an outer joint 3;

[0032] The outer seat 1 is provided with a flow channel cavity 11 and a feed channel 12, and the output end of the feed channel 12 is connected to the flow channel cavity 11; the inner seat 2 is installed in the flow channel cavity 11; the outer side surface of the inner seat 2 is partially concave, so that the concave position of the inner seat 2 is separated from the inner wall of the flow channel cavity 11 and forms a transfer channel 20; the outer joint 3 is installed in the outer seat 1; the outer joint 3 is provided with a discharge channel 31; the feed channel 12, the transfer channel 20 and the discharge channel 31 are connected in sequence;

[0033] A valve needle mounting groove 23 for mounting a valve needle 4 is provided inside the inner seat 2 ; the valve needle mounting groove 23 extends from the flow channel inner cavity 11 to the discharge channel 31 .

[0034] The present solution provides a flow channel insert for preventing valve needle deviation, in which an inner seat 2 is arranged in the flow channel inner cavity 11 of the outer seat 1, and a valve needle 4 is installed through the valve needle mounting groove 23 of the inner seat 2. The transfer channel 20 on the outer side of the inner seat 2 is also used to transfer materials, thereby preventing the valve needle 4 from being directly impacted after being input from the feed channel 12. This has a protective effect on the valve needle 4 and solves the problem of position deviation caused by the impact of the material on the valve needle 4.

[0035] Specifically, the runner insert can be used to convey liquid materials or molten materials, as a mechanism for receiving, outputting, transferring, etc. the materials; the materials can be heated first and then input into the runner insert. The following takes molten materials as an example, such as plastic heated to melt; in the comparative example without an inner seat, the plastic enters the feed channel, and because its flow rate may be relatively large, it may impact the valve needle in the inner cavity of the flow channel after input, causing the position of the valve needle to shift, and also damaging the surface of the valve needle; and the present solution sets the inner seat 2 in the flow channel cavity 11 of the outer seat 1; for the transmission of plastic in the runner insert, the outer side surface of the inner seat 2 will be concave at a local position, so that the concave position is separated from the inner wall of the flow channel cavity 11 and a gap is formed, thereby forming a transfer channel 20 between the two; in this way, the plastic input from the feed channel 12 is in direct contact with the inner seat 2, And it is transmitted along the transfer channel 20 of the outer wall of the inner seat 2 to the discharge channel 31 of the external joint 3, and the plastic is output outside the flow channel insert; the valve needle 4 is installed in the valve needle mounting groove 23, and the valve needle mounting groove 23 extends from the flow channel inner cavity 11 to the discharge channel 31, that is, the valve needle 4 can extend from the flow channel inner cavity 11 to the discharge channel 31, and the inner wall of the valve needle mounting groove 23 limits the valve needle 4, thereby reinforcing the fixing stability of the valve needle 4 in the flow channel inner cavity 11; and because the outer wall of the inner seat 2 replaces the valve needle 4 to contact the plastic, the surface of the valve needle 4 will not be damaged; further, the plastic has no direct impact on the valve needle 4, and the position of the valve needle 4 does not shift, thereby ensuring the stability of the position of the valve needle 4.

[0036] Preferably, the inner seat 2 comprises: a fixing member 21 and an inner joint 22;

[0037] The fixing member 21 is installed in the flow channel inner cavity 11; the internal joint 22 is connected to the fixing member 21; the fixing member 21 and the internal joint 22 are both provided with the valve needle mounting groove 23 which are interconnected; the outer side surface of the fixing member 21 and the flow channel inner cavity 11 form the transfer channel 20; the internal joint 22 extends into the discharge channel 31.

[0038] The inner seat 2 of this solution can be an integrated structure or a split structure; for the split structure, it mainly includes: a fixing member 21 and an inner joint 22; the fixing member 21 is installed in the flow channel inner cavity 11, so that the entire inner seat 2 is limited in the flow channel inner cavity 11; the fixing member 21 and the inner joint 22 are connected, and the valve needle 4 is fixed through the valve needle installation groove 23 of the two, so that the valve needle 4 extends from the flow channel inner cavity 11 to the inner joint 22. In this way, the fixing member 21 and the inner joint 22 adopt a split structure, which can simplify the structure of the inner seat 2; at the same time, the fixing member 21 with different parameters can be selected according to needs to connect with the inner joint 22 with different parameters, for example, considering the concave condition of the outer side surface of the fixing member 21, the inner diameter size of the valve needle installation groove 23, the shape of the inner joint 22, etc., the installation flexibility of the inner seat 2 is improved.

[0039] More preferably, the inner joint 22 is provided with a guide ring 221 ; the guide ring 221 is provided with surrounding guide ports 220 on the outer edge of the fixing member 21 ; the transfer channel 20 and the discharge channel 31 are connected via the guide ports 220 .

[0040] The guide ring 221 is provided with a plurality of guide ports 220, and the guide ports 220 are distributed around. Therefore, a single guide port 220 can receive plastic from the transfer channel 20 in a specific direction, so that the plastic is diverted to the discharge channel 31, thereby reducing the speed of the plastic when entering the discharge channel 31, thereby reducing the impact of the plastic on the valve needle 4 in the discharge channel 31, and achieving maximum protection for the valve needle 4.

[0041] Further optimized, the inner joint 22 is provided with a joint body 222; one end of the joint body 222 is connected to the guide ring 221, and the other end extends into the discharge channel 31; the inner diameter of the discharge channel 31 gradually decreases from the guide ring 221 to the joint body 222.

[0042] One end of the joint body 222 is connected to the guide ring 221, and the other end extends into the discharge channel 31; the guide port 220 of the guide ring 221 receives the plastic and guides it to the discharge channel 31; the inner diameter of the discharge channel 31 gradually decreases, and the plastic can be gradually accumulated toward the central axis, thereby concentrating the original diverted plastic for output.

[0043] More preferably, the outer diameter of the joint body 222 gradually decreases in the direction from the guide ring 221 to the discharge channel 31 ; the joint body 222 and the discharge channel 31 are coaxially arranged.

[0044] The outer diameter of the joint body 222 gradually decreases from the guide ring 221 to the discharge channel 31, and the interval between the joint body 222 and the discharge channel 31 can remain unchanged along the conveying direction of the plastic, so that the plastic moves against the outer wall of the joint body 222 and the inner wall of the discharge channel 31 to reduce the conveying speed of the plastic. The plastic is evenly in contact with multiple outer side surfaces of the valve needle 4, reducing the impact of the plastic on the valve needle 4 in the discharge channel 31.

[0045] Preferably, the transfer channel 20 is distributed around the outer wall of the inner seat 2 .

[0046] The concave portion of the outer side surface of the inner seat 2 can be distributed in a circumferential manner. When the transfer channel 20 receives the plastic, the plastic can be distributed on the outer side surface of the inner seat 2, and then output from the outer side surface to the guide port 220 of the guide ring 221, thereby increasing the area of ​​the plastic in the flow channel cavity 11 to slow down the flow rate of the plastic in the flow channel cavity 11 and effectively protect the valve needle 4.

[0047] A flow channel structure, comprising: a valve needle 4 and the above-mentioned flow channel insert for preventing the valve needle from deflecting;

[0048] The valve needle 4 is installed in the valve needle installation groove 23 , and the valve needle 4 extends out of the valve needle installation groove 23 at one end of the discharge channel 31 .

[0049] In the flow channel structure, the valve needle 4 is installed in the valve needle mounting groove 23, and the valve needle mounting groove 23 extends from the flow channel inner cavity 11 to the discharge channel 31, that is, the valve needle 4 can extend from the inner cavity to the discharge channel 31, and the inner wall of the valve needle mounting groove 23 limits the valve needle 4, thereby reinforcing the fixing stability of the valve needle 4 in the flow channel inner cavity 11; and because the outer wall of the inner seat 2 replaces the valve needle 4 to contact the plastic, the surface of the valve needle 4 will not be damaged; further, the plastic does not have a direct impact on the valve needle 4, and the position of the valve needle 4 does not shift, thereby ensuring the stability of the position of the valve needle 4.

[0050] A mold feeding system is provided with the above-mentioned flow channel structure.

[0051] 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 valve needle deviation, characterized in that: include: External seat, internal seat and external joint; The outer seat is provided with a flow channel inner cavity and a feed channel, and the output end of the feed channel is connected to the flow channel inner cavity; the inner seat is installed in the flow channel inner cavity; the outer side surface of the inner seat is partially concave, so that the concave position of the inner seat is separated from the inner wall of the flow channel inner cavity and forms a transfer channel; the outer joint is installed on the outer seat; the outer joint is provided with a discharge channel; the feed channel, the transfer channel and the discharge channel are connected in sequence; A valve needle mounting groove for mounting a valve needle is provided inside the inner seat; the valve needle mounting groove extends from the inner cavity of the flow channel to the discharge channel.

2. A flow channel insert for preventing valve needle deviation according to claim 1, characterized in that: The inner seat comprises: a fixing member and an inner joint; The fixing part is installed in the inner cavity of the flow channel; the inner joint is connected to the fixing part; the fixing part and the inner joint are both provided with the valve needle mounting grooves which are interconnected; the outer side surface of the fixing part and the inner cavity of the flow channel form the transfer channel; the inner joint extends into the discharge channel.

3. A flow channel insert for preventing valve needle deviation according to claim 2, characterized in that: The inner joint is provided with a guide ring; the guide ring is provided with surrounding guide ports on the outer edge of the fixing member; the transfer channel and the discharge channel are connected through the guide ports.

4. A flow channel insert for preventing valve needle deviation according to claim 3, characterized in that: The inner joint is provided with a joint body; one end of the joint body is connected to the guide ring, and the other end extends into the discharge channel; the inner diameter of the discharge channel gradually decreases from the guide ring to the joint body.

5. A flow channel insert for preventing valve needle deviation according to claim 4, characterized in that: The outer diameter of the joint body gradually decreases from the guide ring to the discharge channel; the joint body and the discharge channel are coaxially arranged.

6. A flow channel insert for preventing valve needle deviation according to claim 3, characterized in that: The transfer channel is distributed around the outer side wall of the inner seat.

7. A flow channel structure, characterized in that: include: A valve needle and a flow channel insert for preventing valve needle deviation as claimed in any one of claims 1 to 6; The valve needle is installed in the valve needle installation groove, and the valve needle extends out of the valve needle installation groove at one end of the discharge channel.

8. A mold feeding system, characterized in that: A flow channel structure as claimed in claim 7 is provided.

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