Plugging structure of hot runner and splitter plate

Abstract

The utility model relates to the technical field of hot runner systems, in particular to a plugging structure of a hot runner and a splitter plate. The plugging structure comprises a plugging head and a runner process hole, the runner process hole comprises an outer section hole and an inner section hole; the plugging head comprises an arc-shaped cap part and an insertion part; and when the plugging head is plugged into the runner process hole, the inner section hole is plugged by the inserting part, and the peripheral edge of the arc-shaped cap part is tightly attached to the hole wall of the outer section hole. The plugging head is tightly attached and fixed to the outer section portion of the runner process hole in the radial direction, and the plugging head is inserted and fixed to the inner section portion of the runner process hole in the axial direction, so that the plugging structure can completely seal the runner process hole of the splitter plate more firmly, and then normal operation of the injection molding process is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hot runner system, in particular to a hot runner's plugging structure and shunt plate. BACKGROUND

[0002] Hot runner is through the mode of guaranteeing runner and sprue injection material to keep melting state by heating, and hot runner system is generally composed of hot nozzle, shunt plate, temperature control box and accessory etc. Shunt plate is internally provided with main runner, and hot runner is formed by processing from the end of shunt plate to the inside, and after processing, the outside of shunt plate and hot runner are left with runner process hole for deep hole drill, and user needs to plug runner process hole with plug, to prevent injection material in hot runner from leaking from runner process hole in injection process.

[0003] The plugging structure of runner process hole in traditional shunt plate usually includes plug and installation screw hole with aperture larger than runner process hole at the opening of runner process hole, and the plug is locked in installation screw hole through locking screw thread matched with installation screw hole. In actual application, especially for shunt plate in large mould, due to the larger pressure of hot runner, injection material in hot runner will push out plug from installation screw thread and form opening in actual injection process, so as to cause runner no longer closed, or overflow from the gap between screw threads, and further affect normal injection process. UTILITY MODEL CONTENTS

[0004] In view of the above defects, the utility model aims at providing a plugging structure of hot runner, which can seal runner process hole of shunt plate more firmly.

[0005] Another purpose of the utility model is to provide a shunt plate of hot runner, and runner process hole can be completely sealed, to ensure normal injection process.

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

[0007] A hot runner's plugging structure for plugging a hot runner manifold's process hole; it comprises a plugging head and a process hole; the process hole comprises an outer section hole and an inner section hole, the outer section hole's radial dimension is larger than the inner section hole's radial dimension; the plugging head is made of metal material, it comprises an arc-shaped cap and an insertion part; the arc-shaped cap is an arc-shaped plate, its geometric center protrudes to the outside of the plugging head, its four peripheral edges extend to the inside of the plugging head; the insertion part is a rod, its radial cross-sectional shape is the same as the inner section hole's radial cross-sectional shape; when the plugging head is plugged into the process hole, the insertion part is inserted into the inner section hole and plugs it, the inner side of the arc-shaped cap is in close contact with the outer end face of the inner section hole, the arc-shaped cap's curvature is reduced, and its four peripheral edges are in close contact with the hole wall of the outer section hole.

[0008] Preferably, the plugging head's radial cross-sectional shape is circular, and the process hole's radial cross-sectional shape is also circular.

[0009] Preferably, the insertion part's cylindrical outer wall is provided with an annular groove, and a sealing ring is arranged in the annular groove, the sealing ring is made of elastic material.

[0010] Preferably, the annular groove has at least two, and they are arranged perpendicularly to the axial direction of the plugging head; the outer side of the sealing ring protrudes 0.1-0.2 mm from the annular groove.

[0011] Preferably, the arc-shaped cap's curvature ranges from 0.5 degrees to 5 degrees.

[0012] Preferably, the plugging head is made of stainless steel, and the arc-shaped cap's thickness ranges from 1 mm to 5 mm.

[0013] Preferably, the outer section of the process hole is provided with an annular limiting part at the position connected with the inner section; when the plugging head is plugged into the process hole, the four peripheral edges of the arc-shaped cap are inserted into the annular limiting part.

[0014] A hot runner's manifold, which comprises a plate body and a hot runner structure arranged inside the plate body; the hot runner structure and the outside of the plate body are provided with a hot runner's plugging structure as described above.

[0015] Specifically, the manifold comprises at least two plates, and multiple manifolds are arranged in a stacked manner.

[0016] Specifically, the manifold comprises at least two plates, and multiple manifolds are arranged in a horizontal manner.

[0017] The beneficial effect of the embodiment of the utility model is that the plug-in part of the plugging head is tightly plugged with the flow channel process hole, can make the inner section of the flow channel process hole completely be plugged, the arc cap part of the plugging head can change from arc bending shape to straight trend under external force, further let the periphery edge of the arc cap part extend to all around, and tightly press on the inner wall of the outer section hole of the flow channel process hole, the plugging head is fixedly close to the outer section of the flow channel process hole in radial direction, the plugging head is plugged and fixed with the inner section of the flow channel process hole in axial direction, so that the plugging structure can more firmly seal the flow channel process hole of the flow distribution plate. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic view of the plugging structure in an embodiment of the utility model,

[0019] Figure 2 It is the structure schematic view of the plugging head in an embodiment of the utility model,

[0020] Figure 3 It is Figure 1 The enlarged structure schematic view of the circle part in the embodiment,

[0021] Figure 4 It is the structure schematic view of the plugging head in another embodiment of the utility model,

[0022] Figure 5 It is the enlarged structure schematic view of part structure in another embodiment of the utility model,

[0023] Figure 6 It is the structure schematic view of the flow distribution plate in an embodiment of the utility model.

[0024] Wherein: flow channel process hole 110, outer section hole 111, inner section hole 112, plugging head 120, annular limiting portion 113, arc cap part 121, plug-in part 122, periphery edge 123, annular recess 124, sealing ring 125, flow distribution plate 130, plate body 131, flow channel structure 132. DETAILED DESCRIPTION

[0025] The technical scheme of the utility model will be further illustrated by specific implementation manners in combination with the drawings.

[0026] One embodiment of the application, as Figures 1 to 3As shown, a hot runner plugging structure for plugging a hot runner manifold 130; it comprises a plugging head 120 and a hot runner process hole 110; the hot runner process hole 110 comprises an outer hole 111 and an inner hole 112, the radial dimension of the outer hole 111 is larger than that of the inner hole 112; the plugging head 120 is made of metal material, comprising an arc cap 121 and a plug-in part 122; the arc cap is an arc plate, the geometric center of which protrudes outwardly from the plugging head 120, and the four edges 123 of the arc cap extend inwardly from the plugging head 120; the plug-in part 122 is a rod, and the radial cross-sectional shape of the plug-in part 122 is the same as that of the inner hole 112; when the plugging head 120 is plugged into the hot runner process hole 110, the plug-in part 122 is inserted into the inner hole 112, and the inner hole 112 is plugged, the inner side of the arc cap 121 is in close contact with the outer end surface of the inner hole 112, the arc of the arc cap 121 is reduced, and the four edges 123 of the arc cap 121 are in close contact with the hole wall of the outer hole 111.

[0027] The plug-in part 122 of the plugging head 120 is tightly plugged into the hot runner process hole 110, which can completely plug the inner part of the hot runner process hole 110; the arc cap 121 of the plugging head 120 can change from an arc shape to a flat shape under the action of external force, so that the four edges 123 of the arc cap 121 extend outwardly and tightly press against the inner wall of the outer hole 111 of the hot runner process hole 110; the plugging head 120 is fixedly attached to the outer part of the hot runner process hole 110 in the radial direction, and is fixedly inserted into the inner part of the hot runner process hole 110 in the axial direction, so that the plugging structure can more firmly seal the hot runner process hole 110 of the manifold 130.

[0028] In actual application, when the hot runner process hole 110 of the manifold 130 needs to be plugged, the operator inserts the plugging head 120 from the outside to the inside of the hot runner process hole 110; when the plug-in part 122 of the plugging head 120 is inserted into the inner part of the hot runner process hole 110, the operator knocks the arc cap 121 of the plugging head 120 with a rod-shaped tool until the plug-in part 122 is completely inserted into the inner hole 112, the inner side of the arc cap 121 is in close contact with the outer end surface of the inner hole 112, the arc of the arc cap 121 is reduced or completely disappears, and the four edges 123 of the arc cap 121 are in close contact with the inner part of the outer hole 111; at this time, the plugging head 120 is plugged and fixed in the hot runner process hole 110.

[0029] Specifically, the radial cross-sectional shape of the plugging head 120 is circular, and the radial cross-sectional shape of the flow channel process hole 110 is also circular. In the production and processing scene of the distribution plate 130, most of them are obtained by drilling process in the distribution plate 130 to process the hot runner, so the flow channel process hole 110 left on the distribution plate 130 is also a circular hole, so the cross-sectional shape of the plugging head 120 is circular, which can more conveniently seal the plugging head 120 and the flow channel process hole 110.

[0030] The arc range of the arc-shaped cap portion 121 is 0.5 degrees to 5 degrees. The plugging head 120 is made of stainless steel, and the thickness of the arc-shaped cap portion 121 ranges from 1 to 5 millimeters. Specifically, the plugging head 120 is made of T8 stainless steel material.

[0031] As shown in the drawings, Figure 4 In another embodiment of the present application, the cylindrical outer wall of the insertion portion 122 is provided with an annular groove 124, and the annular groove 124 is provided with a sealing ring 125 made of elastic material. The cross-sectional size of the insertion portion 122 can be the same as that of the inner segment hole 112, so that the two are rigidly and seamlessly inserted to achieve plugging and sealing, but such a structure design requires high processing precision; therefore, in order to reduce the processing difficulty, a sealing ring 125 can be arranged on the insertion portion 122, and the elasticity of the sealing ring 125 is used to make the insertion portion 122 and the inner segment hole 112 more easily sealed. The annular groove 124 has at least two, and is arranged perpendicular to the axial direction of the plugging head 120; the outer side of the sealing ring 125 protrudes from the annular groove by 0.1-0.2 millimeters.

[0032] As shown in the drawings, Figure 5 In another embodiment of the present application, the outer segment of the flow channel process hole 110 is provided with an annular limiting portion 113 at the position connected with the inner segment; when the plugging head 120 is plugged into the flow channel process hole 110, the four peripheral edges 123 of the arc-shaped cap portion 121 are inserted into the annular limiting portion 113. The annular limiting portion 113 can further make the arc-shaped cap portion 121 and the outer segment fixed more firmly and stably in the radial direction.

[0033] As shown in the drawings, Figure 6 A hot runner distribution plate 130, characterized in that it comprises: a plate body 131 and a flow channel structure 132 arranged inside the plate body 131; the hot runner structure 132 and the outside of the plate body 131 are provided with a hot runner plugging structure as described above; the distribution plate 130 comprises at least two plates, and a plurality of distribution plates 130 are arranged in a stacked manner.

[0034] In practical application, the hot runner system is used to realize injection molding of multiple colors, so multiple distribution plates 130 are arranged in the hot runner system at the same time, each distribution plate 130 is used for flow heating of injection molding materials of various colors, and the specific installation form of the multiple distribution plates 130 is various. For example, the distribution plates 130 at least include two plates, and the multiple distribution plates 130 are arranged horizontally.

[0035] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof. The "outer segment hole" and "inner segment hole" are the parts of the hole structure close to the outside and inside of the body structure, and "inner" and "outer" are the inner and outer parts of the body profile of the component.

[0036] The technical principles of the utility model are described above in combination with specific embodiments. These descriptions are only for explaining the principles of the utility model, and cannot be interpreted as limiting the protection scope of the utility model in any way. Based on the explanations herein, other specific embodiments of the utility model can be conceived by those skilled in the art without creative labor, and these embodiments will all fall within the protection scope of the utility model.

Claims

1. A hot runner plugging structure for plugging a hot runner manifold, comprising: a plugging head and a hot runner process hole; the hot runner process hole comprising: an outer section hole and an inner section hole, the outer section hole having a larger radial dimension than the inner section hole; the plugging head being made of a metal material and comprising: an arc-shaped cap portion and a plug-in portion; the arc-shaped cap being an arc-shaped plate, the geometric center of the arc-shaped cap being convex to the outside of the plugging head, and the peripheral edge of the arc-shaped cap being curved and extending to the inside of the plugging head; the plug-in portion being a rod, the radial cross-sectional shape of the plug-in portion being the same as the radial cross-sectional shape of the inner section hole; when the plugging head is plugged into the hot runner process hole, the plug-in portion is inserted into the inner section hole and plugs the inner section hole, the inside of the arc-shaped cap portion is in close contact with the outer end surface of the inner section hole, the curvature of the arc-shaped cap portion is reduced, and the peripheral edge of the arc-shaped cap portion is in close contact with the hole wall of the outer section hole; the radial cross-sectional shape of the plugging head is circular, and the radial cross-sectional shape of the hot runner process hole is also circular; a circular groove is formed in the cylindrical outer wall of the plug-in portion, a sealing ring is arranged in the circular groove, and the sealing ring is made of an elastic material. characterized in that 2. The plugging head according to claim 1, wherein: the circular groove has at least two, and is arranged perpendicular to the axial direction of the plugging head; and the outside of the sealing ring is convex to the circular groove by 0.1-0.2 mm.

3. The plugging head according to claim 1, wherein: the curvature of the arc-shaped cap portion ranges from 0.5 degrees to 5 degrees; and the arc-shaped cap portion is made of stainless steel, and the thickness of the arc-shaped cap portion ranges from 1 mm to 5 mm.

4. The hot runner plugging structure according to any one of claims 1-3, comprising: a plate body and a hot runner structure arranged inside the plate body, and a hot runner plugging structure as claimed in any one of claims 1-3 being arranged between the hot runner structure and the outside of the plate body.

5. The hot runner manifold according to claim 4, wherein: the manifold comprises at least two plates, and the plurality of plates are arranged in a stacked manner.

6. The hot runner manifold according to claim 4, wherein: the manifold comprises at least two plates, and the plurality of plates are arranged in a horizontal manner.

7. The hot runner manifold according to claim 4, wherein: the manifold comprises at least two plates, and the plurality of plates are arranged in a staggered manner.

8. The hot runner manifold according to claim 4, wherein: the manifold comprises at least two plates, and the plurality of plates are arranged in a staggered manner.

2. The hot runner shut-off structure according to claim 1, wherein 9. The hot runner manifold according to claim 8, wherein: the manifold comprises at least two plates, and the plurality of plates are arranged in a stacked manner.

3. The hot runner floodbar structure of claim 2, wherein 10. The hot runner manifold according to claim 8, wherein: the manifold comprises at least two plates, and the plurality of plates are arranged in a horizontal manner.

4. The hot runner floodbar structure of claim 3, wherein ​ 5. The hot runner floodbar structure of claim 1 wherein, ​ 6. The hot runner floodbar structure of claim 1, wherein ​ 7. The hot runner floodbar structure of claim 1 wherein, ​ 8. A manifold distribution plate for a hot runner, characterized by ​ ​ ​ ​ ​ ​

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