Runner reversing valve and forming die
By combining the design of cold flow channel inserts, ejector pin sleeves and fastening rings, the problems of large space occupation and difficult disassembly and assembly of traditional flow channel reversing valves are solved, realizing flexible adjustment of flow channel reversal and efficient production.
Patent Information
- Application Number
- CN202422668415.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-11-01
AI Technical Summary
Traditional flow channel reversing valves occupy a large space, are difficult to disassemble and assemble, and are hard to adjust, which affects production efficiency and equipment layout flexibility.
The design employs a combination of cold runner inserts, ejector pin sleeves, and fastening rings. The flow channel is reversed through threaded connections and rotating ejector pin sleeves, reducing space occupation and simplifying the assembly and disassembly process.
It enables flow channel reversal adjustment without disassembling the reversing valve, reducing space occupation, simplifying operation process, and improving production efficiency and equipment layout flexibility.
Smart Images
Figure CN223618138U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flow channel reversing valve technology, and in particular to a flow channel reversing valve and a molding die. Background Technology
[0002] In the plastic injection molding process, the runner reversing valve, as a key component connecting the injection machine nozzle and the mold cavity, is crucial to production efficiency, product quality, and cost control. Traditional reversing valve components include cold runner inserts and fastening screws. The design of traditional runner reversing valves suffers from the following major problems:
[0003] 1. Large Space Occupancy: Traditional flow channel reversing valves typically require a large physical space to function. This design not only limits the flexibility of equipment layout but can also cause problems with production line space planning, affecting the optimization and integration of the overall production line. Furthermore, excessively large reversing valves also increase the length of the cold runner. On the one hand, increased runner length leads to increased injection pressure drop, reducing the process window during injection molding. On the other hand, increased runner length wastes raw materials and is not environmentally friendly.
[0004] 2. Difficult disassembly and assembly: The non-standard and complex structural design makes the disassembly and installation of the flow channel reversing valve more complicated. This not only prolongs the maintenance time, but also increases the labor intensity of operators, which may affect the continuity of the production line and production efficiency.
[0005] In summary, traditional flow channel reversing valves occupy a large space, are difficult to disassemble and assemble, and are hard to adjust. Utility Model Content
[0006] The purpose of this utility model is to provide a flow channel reversing valve and a molding die to alleviate the technical problems of traditional flow channel reversing valves in the prior art, such as large space occupation, difficulty in disassembly and assembly, and difficulty in adjustment.
[0007] In the first aspect, the flow channel reversing valve provided by this utility model includes: a cold flow channel insert, a pin sleeve, and a fastening ring;
[0008] The cold runner insert has multiple runners;
[0009] The fastening ring is threadedly connected to the cold flow channel insert;
[0010] The top end of the ejector sleeve extends into the fastening ring, the ejector sleeve overlaps the inner wall of the fastening ring, and the bottom end of the ejector sleeve is threaded to the mold so that the ejector sleeve can rotate along its own axis.
[0011] The cold runner insert has a mounting hole that communicates with the ejector pin sleeve.
[0012] In an optional implementation,
[0013] The inner wall of the cold runner insert is provided with an insert thread section;
[0014] The outer wall of the fastening ring is provided with a fastening thread section;
[0015] The insert threaded section is threadedly connected to the fastening threaded section.
[0016] In an optional implementation,
[0017] The cold runner insert includes a first connecting portion and a second connecting portion;
[0018] The first connecting part and the second connecting part are connected to each other, and the aperture of the first connecting part is smaller than the aperture of the second connecting part;
[0019] The inner wall of the second connecting part is surrounded to form a positioning groove, and the groove wall of the positioning groove is provided with the insert thread section.
[0020] In an optional implementation,
[0021] The flow channel reversing valve also includes a sealing ring;
[0022] The sealing ring is disposed between the outer wall of the fastening ring and the groove wall of the positioning groove, and the sealing ring is located below the insert thread section and the fastening thread section.
[0023] In an optional implementation,
[0024] The top surface of the first connecting part is provided with multiple flow channels.
[0025] In an optional implementation,
[0026] The inner wall of the fastening ring protrudes inward to form a stepped surface;
[0027] The top of the ejector pin sleeve extends outward to form a cap brim;
[0028] The brim of the cap overlaps the surface of the step.
[0029] In an optional implementation,
[0030] The ejector sleeve is provided with an ejector thread section, which is used for threaded connection with the mold.
[0031] In an optional implementation,
[0032] The ejector sleeve has an assembly hole in the middle, which communicates with the mounting hole. The assembly hole is used to cooperate with a tool to drive the ejector sleeve to rotate.
[0033] In an optional implementation,
[0034] The assembly hole is configured as an internal hexagon.
[0035] Secondly, the molding die provided by this utility model includes a flow channel reversing valve.
[0036] The flow channel reversing valve provided by this utility model connects the fastening ring threadedly to the cold runner insert, with the top of the ejector sleeve overlapping the fastening ring and the bottom of the ejector sleeve threadedly connected to the mold. The ejector sleeve can rotate freely. By using a tool to rotate the ejector sleeve through the mounting hole, the cold runner insert is made to float out of the mold surface. By using a tool to rotate the cold runner insert, the flow channel reversing adjustment can be completed without disassembling the reversing valve. This alleviates the technical problems of traditional flow channel reversing valves in the prior art, such as large space occupation, difficulty in disassembly and assembly, and difficulty in adjustment. Attached Figure Description
[0037] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0038] Figure 1 A schematic diagram of the overall structure of the flow channel reversing valve provided in an embodiment of this utility model;
[0039] Figure 2 A schematic diagram of the overall structure of the flow channel reversing valve provided in an embodiment of this utility model from another perspective;
[0040] Figure 3 A schematic diagram of the structure of the cooling flow channel insert in the flow channel reversing valve provided in this embodiment of the utility model;
[0041] Figure 4 A schematic diagram of the fastening ring in the flow channel reversing valve provided in this embodiment of the utility model;
[0042] Figure 5 A schematic diagram of the ejector pin sleeve in the flow channel reversing valve provided in this embodiment of the utility model;
[0043] Figure 6 A schematic diagram of the molding die provided in an embodiment of this utility model.
[0044] Icons: 100-Cold runner insert; 110-First connection; 111-Runner; 120-Second connection; 121-Insert threaded section; 130-Mounting hole; 200-Ejector sleeve; 210-Ejector threaded section; 220-Cap edge; 230-Assembly hole; 300-Fastening ring; 310-Fastening threaded section; 320-Stepped surface; 400-Sealing ring; 500-Mold. Detailed Implementation
[0045] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0046] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0048] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.
[0049] To address the issues of existing flow channel reversing valves being space-consuming and difficult to adjust, such as... Figure 1 , Figure 2 As shown, the flow channel reversing valve provided in this embodiment includes: a cold flow channel insert 100, a pin sleeve 200, and a fastening ring 300.
[0050] The cold runner insert 100 has multiple runners 111, which can be connected to the runners 111 on the mold 500. By rotating the cold runner insert 100, the runners 111 can be reversed.
[0051] The retaining ring 300 is threadedly connected to the cold runner insert 100, allowing the cold runner insert 100 to rotate freely relative to the retaining ring 300.
[0052] The top end of the ejector sleeve 200 extends into the retaining ring 300, and the ejector sleeve 200 overlaps the inner wall of the retaining ring 300. The bottom end of the ejector sleeve 200 is threadedly connected to the mold 500 so that the ejector sleeve 200 can rotate along its own axis. By screwing the ejector sleeve 200, since the ejector sleeve 200 is threadedly connected to the mold 500, the ejector sleeve 200 can move upward, so that the top surface of the cold runner insert 100 protrudes relative to the main body of the mold 500. Then, by using a wrench to rotate the flat position on the cylindrical surface of the cold runner insert 100, the flow channel 111 can be reversed and adjusted without disassembling the reversing valve.
[0053] Conventional directional control valves typically require four screws for fastening and occupy at least a 50x50mm square space. This design, however, only requires a single ejector pin and a 200mm space for fastening, occupying a minimum of a 24mm diameter arc space. By simply loosening a single screw, the flow path can be adjusted without completely removing the valve from the mold. In contrast, common directional control valves require disassembly from the mold, angle adjustment, and reinstallation, causing inconvenience.
[0054] The cold runner insert 100 has a mounting hole 130 that communicates with the ejector sleeve 200. The mounting hole 130 is located in the middle of the cold runner insert 100. A tool passes through the mounting hole 130 and connects to the ejector sleeve 200. The tool drives the ejector sleeve 200 to rotate, thereby rotating the ejector sleeve 200 and adjusting the height position of the ejector sleeve 200 relative to the mold 500.
[0055] In an optional embodiment, the inner wall of the cold runner insert 100 is provided with an insert thread section 121; the outer wall of the fastening ring 300 is provided with a fastening thread section 310. The insert thread section 121 is an internal thread section, and the fastening thread section 310 is an external thread section. The internal thread section and the external thread section cooperate with each other to realize the threaded connection between the insert thread section 121 and the fastening thread section 310.
[0056] In alternative implementations, such as Figure 3As shown, the cold runner insert 100 includes a first connecting portion 110 and a second connecting portion 120; the first connecting portion 110 and the second connecting portion 120 are connected to each other, and the first connecting portion 110 and the second connecting portion 120 are integral structures. The middle portions of the first connecting portion 110 and the second connecting portion 120 are both through and connected to form a mounting hole 130, and the diameter of the hole in the first connecting portion 110 is smaller than the diameter of the hole in the second connecting portion 120; the inner wall of the second connecting portion 120 is surrounded to form a positioning groove, and the groove wall of the positioning groove is provided with an insert threaded section 121.
[0057] In an optional embodiment, the flow channel reversing valve further includes a sealing ring 400; the sealing ring 400 is disposed between the outer wall of the fastening ring 300 and the groove wall of the positioning groove, and the sealing ring 400 is located below the insert thread section 121 and the fastening thread section 310, and the sealing ring 400 serves to prevent molten material leakage.
[0058] In an optional embodiment, the top surface of the first connecting part 110 is provided with multiple flow channels 111, which can be arranged in a T-shape and communicate with the flow channels on the mold, and can be reversed by rotation.
[0059] In alternative implementations, such as Figure 4 As shown, the inner wall of the fastening ring 300 extends inward to form a stepped surface 320. It should be noted that the extension direction is perpendicular to the axis of the fastening ring 300.
[0060] The top of the ejector sleeve 200 extends outward to form a cap 220. It should be noted that the extension direction is perpendicular to the axis of the ejector sleeve 200.
[0061] The cap brim 220 overlaps the stepped surface 320, and there is a gap between the top of the cap brim 220 and the first connecting part 110, thereby achieving a clearance fit between the ejector sleeve 200 and the cold runner insert 100. The ejector sleeve 200 can rotate freely in the positioning groove, which facilitates the adjustment of the cold runner 111 reversal.
[0062] In alternative implementations, such as Figure 5 As shown, the ejector sleeve 200 is provided with an ejector thread section 210, which is an external thread section. The mold 500 has a threaded hole, and the inner wall of the threaded hole is an internal thread section. The external thread section and the internal thread section cooperate with each other to realize the threaded connection between the ejector thread section 210 and the mold 500.
[0063] In an optional embodiment, the ejector sleeve 200 has a mounting hole 230 in the middle, which communicates with the mounting hole 130. The mounting hole 230 is used to cooperate with a tool to drive the ejector sleeve 200 to rotate.
[0064] Alternatively, in an optional embodiment, the mounting hole 230 is configured as an internal hexagonal shape, and a hex screwdriver can be used to insert into the mounting hole 230. The hex screwdriver fits the shape of the mounting hole 230, and the hex screwdriver drives the ejector sleeve 200 to rotate.
[0065] The flow channel reversing valve provided in this embodiment connects the fastening ring 300 to the cold runner insert 100 via a threaded connection. The top end of the ejector sleeve 200 overlaps the fastening ring 300, and the bottom end of the ejector sleeve 200 is threaded to the mold 500. The ejector sleeve 200 can rotate freely. By using a tool to rotate the ejector sleeve 200 through the mounting hole 130, the cold runner insert 100 is made to float out of the surface of the mold 500. By using a tool to rotate the cold runner insert 100, the flow channel 111 can be reversed and adjusted without disassembling the reversing valve. This alleviates the technical problems of traditional flow channel reversing valves in the prior art, which occupy a large space and are difficult to disassemble and adjust.
[0066] like Figure 6 As shown, based on the above embodiments, the molding die 500 provided in this embodiment includes a flow channel reversing valve.
[0067] Specifically, one side of the molding die 500 is provided with multiple mold 500 channels 111. The mold 500 channels 111 can be the same as the channels 111 on the top surface of the cold runner insert 100. The molding die 500 has a through hole, and the flow channel reversing valve can be placed in the through hole so that the top surface of the cold runner insert 100 is flush with the top surface of the molding die 500, thereby making the channels 111 interconnected.
[0068] When a reversal is required, use a hex screwdriver to rotate the ejector sleeve 200 to remove the component clamping force and cause the entire component to float out of the mold surface. Use a wrench to rotate the flat part on the cylindrical surface of the cold runner insert 100. The reversal adjustment of the runner 111 can be completed without disassembling the reversing valve, thereby improving the problem that the existing runner reversing valve occupies a lot of space and is not easy to adjust.
[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A flow channel reversing valve, characterized in that, include: Cold runner insert (100), ejector pin sleeve (200), and fastening ring (300); The cold runner insert (100) has multiple runners (111); The fastening ring (300) is threadedly connected to the cold runner insert (100); The top end of the ejector sleeve (200) extends into the fastening ring (300), the ejector sleeve (200) overlaps the inner wall of the fastening ring (300), and the bottom end of the ejector sleeve (200) is threadedly connected to the mold (500) so that the ejector sleeve (200) can rotate along its own axis. The cold runner insert (100) has a mounting hole (130) communicating with the ejector sleeve (200).
2. The flow channel reversing valve according to claim 1, characterized in that, The inner wall of the cold runner insert (100) is provided with an insert thread section (121); The outer wall of the fastening ring (300) is provided with a fastening thread section (310); The insert threaded section (121) is threadedly connected to the fastening threaded section (310).
3. The flow channel reversing valve according to claim 2, characterized in that, The cold runner insert (100) includes a first connecting portion (110) and a second connecting portion (120); The first connecting part (110) is connected to the second connecting part (120), and the aperture of the first connecting part (110) is smaller than the aperture of the second connecting part (120); The inner wall of the second connecting part (120) is surrounded to form a positioning groove, and the groove wall of the positioning groove is provided with the insert thread section (121).
4. The flow channel reversing valve according to claim 3, characterized in that, The flow channel reversing valve also includes a sealing ring (400); The sealing ring (400) is disposed between the outer wall of the fastening ring (300) and the groove wall of the positioning groove, and the sealing ring (400) is located below the insert thread section (121) and the fastening thread section (310).
5. The flow channel reversing valve according to claim 3, characterized in that, The top surface of the first connecting part (110) is provided with multiple flow channels (111).
6. The flow channel reversing valve according to claim 1, characterized in that, The inner wall of the fastening ring (300) protrudes inward to form a stepped surface (320); The top of the ejector pin sleeve (200) extends outward to form a cap brim (220); The brim (220) overlaps the step surface (320).
7. The flow channel reversing valve according to claim 1, characterized in that, The ejector sleeve (200) is provided with an ejector thread section (210), which is used to thread with the mold (500).
8. The flow channel reversing valve according to claim 1, characterized in that, The ejector sleeve (200) has an assembly hole (230) in the middle, which is connected to the mounting hole (130). The assembly hole (230) is used to cooperate with a tool to drive the ejector sleeve (200) to rotate.
9. The flow channel reversing valve according to claim 8, characterized in that, The assembly hole (230) is configured as an internal hexagon.
10. A molding die (500), characterized in that, Including the flow channel reversing valve as described in any one of claims 1-9.