Splitter plate and hot runner system with same

Abstract

The invention provides a splitter plate and a hot runner system with the same, and the splitter plate comprises a first plate body which comprises a first surface and a first runner located on the first surface; the second plate body comprises a second surface attached to the first surface and a second flow channel located on the second surface, and the second flow channel comprises a first main flow section and a first communicating part communicating with the first main flow section; and the first communicating part and part of the first runner coincide in the thickness direction of the splitter plate so as to communicate with each other. The runner of the splitter plate adopts the single-side runner, so that multiple layers of runners which are layered up and down can be realized only through the first plate body and the second plate body, and the thickness of the splitter plate can be effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of hot runners, in particular to a manifold and a hot runner system having the manifold. Background Art

[0002] The manifold is a component of the hot runner system, which is used to divert the resin material injected from the injection molding machine and guide it to various injection points of the mold.

[0003] In the prior art, the manifold is composed of multiple layers of plates, and corresponding flow channel grooves are opened on the opposite surfaces of the upper and lower plates to form a complete flow channel. In a multi-point hot runner system, a double-layer flow channel design is adopted to consider the flow balance of the fluid material. In this way, the number of layers of the plates needs to be increased, which in turn increases the thickness of the manifold.

[0004] In view of this, it is necessary to provide a diverter plate to solve the above technical problems. Summary of the invention

[0005] In order to achieve the above-mentioned purpose, the present invention provides a diverter plate, which includes a first plate body, including a first surface and a first flow channel located on the first surface; a second plate body, including a second surface in contact with the first surface and a second flow channel located on the second surface, the second flow channel including a first mainstream section and a first connecting portion connected to the first mainstream section; wherein the first connecting portion and part of the first flow channel overlap in the thickness direction of the diverter plate to be connected.

[0006] As a further improvement of the present invention, the first flow channel includes a first flow segment and a second flow segment, and the first flow segment and the second flow segment are connected through the second flow channel.

[0007] As a further improvement of the present invention, the first connecting portion and the first flow segment overlap in the thickness direction of the diverter plate, and the area of ​​the first connecting portion is less than or equal to the area of ​​the first flow segment.

[0008] As a further improvement of the present invention, the first mainstream section includes a first mother flow channel and several first sub-flow channels connected to the first mother flow channel, the first connecting portion is connected to the first mother flow channel, and the first connecting portion is at the same distance from the several first sub-flow channels.

[0009] As a further improvement of the present invention, the first connecting portion is perpendicular to the first mother flow channel, and an arc-shaped protrusion is provided at the position where the first mother flow channel and the first connecting portion are connected.

[0010] As a further improvement of the present invention, the end of the first connecting portion is in an arc shape, and the length of the first connecting portion is at least 1.5 times the diameter of the arc.

[0011] As a further improvement of the present invention, the second flow segment includes a second mainstream segment and a second connecting portion connected to the second mainstream segment, the second connecting portion and the first sub-flow channel overlap in the thickness direction of the diverter plate, and the area of ​​the second connecting portion is less than or equal to the area of ​​the first sub-flow channel.

[0012] As a further improvement of the present invention, the structure of the second flow section is the same as the structure of the second flow channel.

[0013] As a further improvement of the present invention, the first plate body is provided with a feed port which passes through the first plate body and is connected to the first flow section, and the second plate body is provided with a plurality of discharge ports which pass through the second plate body and are connected to the second flow section.

[0014] The present invention also provides a hot runner system, which includes the above-mentioned manifold.

[0015] Beneficial effects of the present invention: The flow channel of the manifold plate of the present invention adopts a single-sided flow channel, so that a multi-layered flow channel with upper and lower layers can be realized only by the first plate body and the second plate body, thereby effectively reducing the thickness of the manifold plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic structural diagram of a diverter plate of the present invention from one perspective;

[0018] Figure 2 A schematic structural diagram of the diverter plate of the present invention from another perspective;

[0019] Figure 3 for Figure 1 An exploded schematic diagram of the diverter plate from the perspective shown;

[0020] Figure 4 for Figure 2 An exploded schematic diagram of the diverter plate from the perspective shown;

[0021] Figure 5 is a schematic diagram of the first surface of the present invention;

[0022] Figure 6 is a schematic diagram of the second surface of the present invention;

[0023] Figure 7 It is a perspective view of the flow channel in the manifold of the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] Embodiments of the present invention are described in detail below, examples of which 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.

[0026] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 invention.

[0027] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0028] like Figures 1 to 7 As shown, the diverter plate provided by the present invention includes a first plate body 100 and a second plate body 200. The first plate body 100 and the second plate body 200 are connected to divert the fluid material of the hot runner system through the flow channels therein.

[0029] The first plate body 100 includes a first surface 101 and a first flow channel 102 located on the first surface 101, and the second unit 200 includes a second surface 201 and a second flow channel 202 located on the second surface 201, wherein the first surface 101 and the second surface 201 are in contact with each other, and the first flow channel 102 and the second flow channel 202 partially overlap in the thickness direction of the diverter plate to be connected.

[0030] The first plate body 100 and the second plate body 200 have the same shape and size. The first surface 101 is welded to the second surface 201, thereby achieving fixed connection between the first plate body 100 and the second plate body 200, and at the same time achieving sealing of the first flow channel 102 and the second flow channel 202. The first flow channel 102 and the second flow channel 202 together form a flow channel for diverting fluid materials, and the first flow channel 102 and the second flow channel 202 partially overlap in the thickness direction of the diverter plate, that is, the first flow channel 102 and the second flow channel 202 are not arranged correspondingly, and the overlapping part forms a connecting part to achieve the flow of fluid materials between the first flow channel 102 and the second flow channel 202.

[0031] Specifically, the first surface 101 is the bottom surface of the first plate body 100. The first flow channel 102 is formed on the first surface 101, and the first flow channel 102 is a groove opened on the first surface 101. After the first surface 101 and the second surface 201 are attached, the first flow channel 102 is sealed.

[0032] The first flow channel 102 includes a first flow segment 102a and a second flow segment 102b, and the first flow segment 102a and the second flow segment 102b are connected through the second flow channel 202. The first flow segment 102a and the second flow segment 102b are arranged at intervals on the first surface 101, and the fluid material cannot flow directly from the first flow segment 102a to the second flow segment 102b, and needs to pass through the second flow channel 202 to achieve the communication between the first flow segment 102a and the second flow segment 102b.

[0033] The first flow segment 102a extends along one of the central axes of the first surface 101. A plurality of mutually independent second flow segments 102b are arranged at intervals on the first surface 101, and the plurality of second flow segments 102b are symmetrically arranged on both sides of the first flow segment 102a. After the fluid material enters the first flow segment 102a, it flows into each of the second flow segments 102b through the second flow channel 202.

[0034] The second flow section 102b includes a second main flow section and a second connecting portion 102b-1 connected to the second main flow section, the second connecting portion 102b-1 overlaps with a portion of the second flow channel 202 in the thickness direction of the manifold, and the area of ​​the second connecting portion 102b-1 is smaller than the area of ​​the second flow channel 202. The second connecting portion 102b-1 and a portion of the second flow channel 202 overlap with each other, so that the fluid material can flow from the second flow channel 202 into the second main flow section through the second connecting portion 102b-1.

[0035] The second main flow section includes a second main flow channel 102b-2 and a plurality of second sub-flow channels 102b-3 connected to the second main flow channel 102b-2. The second connecting portion 102b-1 is connected to the second main flow channel 102b-2, and the fluid material flows from the second connecting portion 102b-1 to the second main flow channel 102b-2, and then flows to each of the second sub-flow channels 102b-3 through the second main flow channel 102b-2. The distance between the second connecting portion 102b-1 and the plurality of second sub-flow channels 102b-3 is the same, so that the flow channel length of the fluid material flowing from the second connecting portion 102b-1 to each of the second sub-flow channels 102b-3 can be ensured to be the same, so as to achieve the purpose of injection molding balance.

[0036] The second connecting portion 102b-1 is perpendicular to the second mother flow channel 102b-2, and the connecting point between the second connecting portion 102b-1 and the second mother flow channel 102b-2 is located at the center of the second mother flow channel 102b-2. An arc-shaped protrusion is provided at the connecting position between the second mother flow channel 102b-2 and the second connecting portion 102b-1 to divert the fluid material flowing from the second connecting portion 102b-1 into the second mother flow channel 102b-2.

[0037] The end of the second connecting portion 102b-1 away from the second mother flow channel 102b-2 is in an arc shape, so that the fluid material can be effectively prevented from remaining at the end of the second connecting portion 102b-1. The length of the second connecting portion 102b-1 is at least 1.5 times the diameter of the arc shape, thereby ensuring that the fluid material can flow smoothly and evenly through the second connecting portion 102b-1 from the second flow channel 202 into the second mother flow channel 102b-2.

[0038] In this embodiment, the second main flow channel 102b-2 and the plurality of second sub-flow channels 102b-3 form a shape similar to an "I" shape, that is, one second main flow channel 102b-2 is matched with four second sub-flow channels 102b-3. In addition, the connection between the second connecting portion 102b-1 and the second main flow channel 102b-2, and the connection between the second main flow channel 102b-2 and the second sub-flow channel 102b-3 are both provided with arc-shaped transitions, so as to facilitate the circulation of the fluid material, reduce sticking materials, and ensure the flow balance of the fluid material.

[0039] The first plate 100 is also provided with a feed port 103 that passes through the first plate 100 and is connected to the first flow segment 102a. The connection point between the feed port 103 and the first flow segment 102a is located at the center of the first flow segment 102a, and the fluid material enters the first flow segment 102a from the feed port 103.

[0040] The second surface 201 is the upper top surface of the second plate body 200. The second flow channel 202 is formed on the second surface 201, and the second flow channel 202 is a groove opened on the second surface 201. After the first surface 101 and the second surface 201 are attached to each other, the second flow channel 202 is sealed.

[0041] The second flow channel 202 includes a first main flow section and a first connecting portion 202a connected to the first main flow section, and the first connecting portion 202a and the first flow section 102a overlap in the thickness direction of the diverter plate. At least a portion of the first connecting portion 202a and the first flow section 102a overlap in the thickness direction of the diverter plate, so that the fluid material can flow from the first flow section 102a into the first main flow section through the first connecting portion 202a.

[0042] The first main flow section includes a first main flow channel 202b and a plurality of first sub-flow channels 202c connected to the first main flow channel 202b. The first connecting portion 202a is connected to the first main flow channel 202b, and the fluid material flows from the first connecting portion 202a to the first main flow channel 202b, and then flows to each of the first sub-flow channels 202c through the first main flow channel 202b. The first connecting portion 202a and the plurality of first sub-flow channels 202c are at the same distance, so that the flow channel length of the fluid material flowing from the first connecting portion 202a to each of the first sub-flow channels 202c can be ensured to be the same, so as to achieve the purpose of injection molding balance.

[0043] The first connecting portion 202a is perpendicular to the first mother flow channel 202b, that is, the first mother flow channel 202b is perpendicular to the first flow section 102a, and the connecting point between the first connecting portion 202a and the first mother flow channel 202b is located at the center of the first mother flow channel 202b. An arc-shaped protrusion 202b-1 is provided at the connecting position between the first mother flow channel 202b and the first connecting portion 202a, so as to divert the fluid material flowing from the first connecting portion 202a into the first mother flow channel 202b.

[0044] In one embodiment, the area of ​​the first connecting portion 202a is the same as the area of ​​the first flow segment 102a, that is, the first connecting portion 202a and the first flow segment 102a completely overlap, and the two cooperate with each other to form a sealed flow channel.

[0045] In this embodiment, the first mother flow channel 202b is disposed at both ends of the first connecting portion 202a along its extension direction. The fluid material enters the flow channel formed by the first connecting portion 202a and the first flow segment 102a from the feed inlet 103, and then flows into the first mother flow channel 202b at both ends and flows into each of the first sub-flow channels 202c through the first mother flow channel 202b.

[0046] It can be understood that, in this embodiment, the second flow channel 202 is a complete flow channel, and the two first mother flow channels 202b are connected through the first connecting portion 202a.

[0047] In another embodiment, the area of ​​the first connecting portion 202a is smaller than the area of ​​the first flow segment 102a.

[0048] In this embodiment, two second flow channels 202 are symmetrically arranged on the second surface 201, and the two second flow channels 202 are arranged at both ends of the first flow segment 102a through the first connecting portion 202a. The fluid material enters the first flow segment 102a from the feed inlet 103, and then flows into the first connecting portions 202a at both ends, and then flows into the first main flow channel 202b and flows into each of the first sub-flow channels 202c through the first main flow channel 202b.

[0049] Similar to the second connecting portion 102b-1, the end of the first connecting portion 202a away from the first mother channel 202b is arc-shaped, and the length of the first connecting portion 202a is at least 1.5 times the diameter of the arc, thereby ensuring that the fluid material can flow smoothly and balancedly through the first connecting portion 202a from the first flow section 102a into the first mother channel 202b.

[0050] The first main flow channel 202b and the first sub-flow channel 202c may be specifically configured with reference to the second main flow channel 102b-2 and the second sub-flow channel 102b-3, which will not be described in detail here.

[0051] It should be noted that the second connecting portion 102b-1 overlaps with the first sub-channel 202c in the thickness direction of the manifold, and the area of ​​the second connecting portion 102b-1 is less than or equal to the area of ​​the first sub-channel 202c. The second connecting portion 102b-1 and the first sub-channel 202c may be specifically configured with reference to the first connecting portion 202a and the first flow segment 102a, and will not be described in detail here.

[0052] Of course, in other embodiments, the first flow segment 102a may also be disposed on the second surface 201, that is, the first flow segment 102a and the second flow channel 202 are located on the same surface, and two second flow channels 202 are disposed at both ends of the first flow segment 102a and are connected through the first flow segment 102a.

[0053] The second plate body 200 is also provided with a plurality of discharge ports 203 that penetrate the second plate body 200 and are connected to the second flow segment 102b. The connection point between the discharge ports 203 and the second flow segment 102b is located at the end of the second sub-flow channel 102b-3, and the fluid material finally flows out of the flow channel from the discharge ports 203.

[0054] Reference Figures 5 to 7 The first flow channel 102, the second flow channel 202 and the flow of fluid materials in the flow channels are described in detail below using a specific embodiment.

[0055] Reference Figure 5 The first flow channel 102 includes one first flow segment 102a and eight second flow segments 102b that are independent of each other and are symmetrically arranged on the first surface 101. Each second flow segment 102b includes a second connecting portion 102b-1 that overlaps with the first sub-flow channel 202c, one second main flow channel 102b-2, and four second sub-flow channels 102b-3. The area of ​​the second connecting portion 102b-1 is smaller than that of the first sub-flow channel 202c. The feed port 103 is located at the center of the first plate body 100 and is connected to the first flow segment 102a.

[0056] Reference Figure 6 , the second surface 201 is provided with two second flow channels 202 which are independent of each other, and the two second flow channels 202 are symmetrically arranged and connected through the first flow segment 102a. The second flow channel 202 includes a first connecting portion 202a overlapping with the first flow segment 102a, one first mother flow channel 202b and four first sub-flow channels 202c, and the area of ​​the first connecting portion 202a is smaller than the area of ​​the first flow segment 102a. One first sub-flow channel 202c is matched with one second flow segment 102b. The second flow channel 202 and the second flow segment 102b have the same shape and structure. One second sub-flow channel 102b-3 is matched with one discharge port 203, that is, a total of 32 discharge ports 203.

[0057] Reference Figure 7The fluid material enters the first flow segment 102a from the feed port 103, and when it flows to the end of the first flow segment 102a, it flows into the first mother flow channel 202b through the first connecting portion 202a. At this time, the fluid material flows from the first surface 101 to the second surface 201. The flipping flow along the height direction is beneficial to rearrange the heat distribution of the fluid material in the flow channel to prevent temperature imbalance of the fluid material.

[0058] The fluid material continues to flow along the first mother channel 202b into each of the first sub-channels 202c. When it flows to the end of the first sub-channel 202c, it flows into the second mother channel 102b-2 through the second connecting portion 102b-1. At this time, the fluid material flows from the second surface 201 to the first surface 101, realizing the flipping flow of the fluid material again.

[0059] The fluid material continues to flow along the second main flow channel 102b - 2 into each of the second sub-flow channels 102b - 3 , and finally flows out of the flow channel through the discharge port 203 .

[0060] The present invention also provides a hot runner system, which includes the above-mentioned manifold, a main nozzle and a plurality of hot nozzles. The main nozzle is connected to the feed port 103, and the hot nozzle is connected to the discharge port 203. The main nozzle is used to transport the fluid material (such as molten resin) into the flow channel of the manifold, and after the flow is divided by the flow channel, the fluid material is injected into each cavity of the injection mold through the hot nozzle to process the product.

[0061] In summary, the flow channel of the manifold in the present application changes the traditional way of correspondingly setting the flow channel grooves of the upper and lower plates to cooperate with each other to form a flow channel, and adopts a single-sided flow channel. In this way, a multi-layered flow channel with upper and lower layers can be realized only by the first plate body 100 and the second plate body 200, thereby effectively reducing the thickness of the manifold.

[0062] It should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0063] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A splitter plate, characterized in that: include: A first plate body (100) comprising a first surface (101) and a first flow channel (102) located on the first surface (101); A second plate body (200) comprising a second surface (201) in contact with the first surface (101) and a second flow channel (202) located on the second surface (201), wherein the second flow channel (202) comprises a first main flow section and a first connecting portion (202a) connected with the first main flow section; The first connecting portion (202a) and a portion of the first flow channel (102) overlap in the thickness direction of the diverter plate to be connected.

2. The manifold according to claim 1, characterized in that: The first flow channel (102) comprises a first flow segment (102a) and a second flow segment (102b), and the first flow segment (102a) and the second flow segment (102b) are connected via the second flow channel (202).

3. The manifold according to claim 2, characterized in that: The first connecting portion (202a) and the first flow segment (102a) overlap in the thickness direction of the diverter plate, and the area of ​​the first connecting portion (202a) is less than or equal to the area of ​​the first flow segment (102a).

4. The manifold according to claim 3, characterized in that: The first mainstream section includes a first main flow channel (202b), and a plurality of first sub-flow channels (202c) connected to the first main flow channel (202b); the first connecting portion (202a) is connected to the first main flow channel (202b); and the first connecting portion (202a) is at the same distance from the plurality of first sub-flow channels (202c).

5. The manifold according to claim 4, characterized in that: The first connecting portion (202a) is perpendicular to the first mother flow channel (202b), and an arc-shaped protrusion (202b-1) is provided at the position where the first mother flow channel (202b) and the first connecting portion (202a) are connected.

6. The manifold according to claim 3, characterized in that: The end of the first connecting portion (202a) is in an arc shape, and the length of the first connecting portion (202a) is at least 1.5 times the diameter of the arc.

7. The manifold according to claim 4, characterized in that: The second flow segment (102b) comprises a second mainstream segment and a second connecting portion (102b-1) connected to the second mainstream segment, the second connecting portion (102b-1) and the first sub-flow channel (202c) overlap in the thickness direction of the diverter plate, and the area of ​​the second connecting portion (102b-1) is less than or equal to the area of ​​the first sub-flow channel (202c).

8. The manifold according to claim 7, characterized in that: The structure of the second flow section (102b) is the same as the structure of the second flow channel (202).

9. The manifold according to claim 2, characterized in that: The first plate body (100) is provided with a feed port (103) which passes through the first plate body (100) and is connected to the first flow section (102a), and the second plate body (200) is provided with a plurality of discharge ports (203) which pass through the second plate body (200) and are connected to the second flow section (102b).

10. A hot runner system, comprising the manifold according to any one of claims 1 to 9.

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