Main runner bushing structure of thermosetting material

Abstract

The utility model discloses a main runner bushing structure made of thermosetting materials, which comprises a sprue bush and a heat insulation bush sleeved outside the sprue bush. The heat insulation sleeve and the sprue bush are connected into an integrated structure, and a cooling liquid flow channel surrounding the periphery of the sprue bush is formed between the heat insulation sleeve and the sprue bush. The pouring gate is simple in structure, small in occupied space and low in cost, and can solve the problem of high production cost caused by the fact that pouring gate materials cannot be recycled during injection molding production of thermosetting materials.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a main flow channel bushing structure made of thermosetting materials. Background Art

[0002] Since thermosetting materials produce cross-linking reactions during the injection molding process, the gate materials cannot be recycled and reused. In addition, compared with thermoplastic materials, the main runners of the tooling used in the injection molding production of thermosetting materials are relatively thick (thermoplastic Φ3mm / thermosetting Φ5~8mm), which makes the slug occupancy ratio large, resulting in high production costs. The bushing structure in the prior art that can reduce unnecessary slugs in the production of thermosetting materials has a complex structure, occupies a large space, and has a high cost. Therefore, it is particularly necessary to design a main runner bushing structure with a simple structure, small space occupation, low cost, and the ability to shorten the main runner slug of the thermosetting material. Utility Model Content

[0003] The utility model aims at the technical problems existing in the prior art and provides a main runner bushing structure of thermosetting material, which has a simple structure, occupies a small space and has a low cost, and can solve the problem of high production cost caused by the inability to recycle and reuse gate materials during injection molding production of thermosetting materials.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a main runner bushing structure of thermosetting material, including a gate sleeve and an insulation sleeve, the insulation sleeve is arranged outside the gate sleeve; the insulation sleeve and the gate sleeve are connected to form an integrated structure, and a coolant flow channel surrounding the outer periphery of the gate sleeve is formed between the two.

[0005] Furthermore, it also includes a heat insulation board, which is provided with a through hole, and the gate sleeve and the external heat insulation sleeve are passed through the through hole.

[0006] Furthermore, the heat insulation board is located between the middle position of the sprue bushing and the inlet end of the sprue bushing.

[0007] Furthermore, the thermal insulation sleeve and the sprue sleeve are connected to form an integrated structure through interference fit.

[0008] Furthermore, outer flanges are respectively provided on the outer side of the sprue sleeve corresponding to the two ends of the thermal insulation sleeve, and the inner side surfaces at the two ends of the thermal insulation sleeve are respectively tightly connected to the corresponding outer flanges.

[0009] Furthermore, the heat-insulating sleeve is provided with at least one liquid injection port connected to the coolant flow channel, and the liquid injection port is connected to a liquid inlet pipe.

[0010] Furthermore, the liquid injection port is located on a side surface of one end of the thermal insulation sleeve close to the inlet end of the sprue sleeve.

[0011] Furthermore, the liquid inlet pipe is an extended water pipe.

[0012] Furthermore, there are multiple injection ports, and the multiple injection ports are distributed along the circumference of the thermal insulation sleeve.

[0013] Furthermore, there are two liquid injection ports, and the two liquid injection ports are located in the same radial direction of the thermal insulation sleeve.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model connects the insulation sleeve and the gate sleeve into an integrated structure, and a coolant flow channel surrounding the outer periphery of the gate sleeve is formed between the two to cool the gate sleeve, which can avoid the high mold temperature of the tooling from conducting heat to the gate sleeve and causing the main flow channel to solidify, thereby achieving the goal of not generating main flow channel gate waste during the continuous molding operation, thereby achieving the purpose of reducing costs. The utility model has a simple structure, occupies a small space, and is low in cost. The existing production tooling only needs to be slightly modified to use the utility model, and the economic benefit is high.

[0016] 2. The utility model also includes a heat insulation board, which is provided with a through hole. The gate sleeve and the external heat insulation sleeve are inserted into the through hole, so as to isolate the high-temperature molding area, further ensuring that the thermosetting material in the gate sleeve is always in a molten state, so as to achieve that no main runner gate waste is generated during the continuous molding operation.

[0017] 3. The thermal insulation sleeve and the gate sleeve are connected into an integrated structure by interference fit, and no sealing ring is required between the two, so the space occupied is small and there is no risk of leakage.

[0018] 4. The heat-insulating sleeve is provided with at least one liquid injection port connected to the coolant flow channel, and the liquid injection port is connected to a liquid inlet pipe; the liquid inlet pipe is an extended water pipe to facilitate the input of the coolant.

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments; however, the main runner bushing structure of a thermosetting material of the present invention is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0021] In the figure: 1. gate sleeve; 11. coolant flow channel; 12. inlet end; 13. first outer flange; 14. second outer flange; 2. insulation sleeve; 21. liquid injection port; 3. insulation board; 31. through hole; 4. extended water pipe. DETAILED DESCRIPTION

[0022] In the present invention, the terms "first", "second", etc. are only used to distinguish similar objects, rather than to describe a specific order or sequence, and cannot be understood as indicating or implying relative importance. In the description, the orientation or position relationship indicated by "inside" and "outside" are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention, rather than indicating or implying that the device referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more. "In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or a connection between the internal parts of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figure 1 As shown, a main runner bushing structure of a thermosetting material of the utility model comprises a sprue bushing 1 and a heat insulating bushing 2, wherein the heat insulating bushing 2 is sleeved outside the sprue bushing 1. The heat insulating bushing 2 and the sprue bushing 1 are connected to form an integrated structure, and a coolant flow channel 11 surrounding the outer periphery of the sprue bushing 1 is formed between the two. The coolant can cool the sprue bushing 1, thereby lowering the temperature of the sprue bushing 1, so that the thermosetting material is always in a molten state, does not solidify, and reduces the generation of unnecessary sprue heads.

[0025] Specifically, the heat-insulating sleeve 2 and the sprue sleeve 1 are connected into an integrated structure by interference fit, so that no sealing ring is required between the two, and the overall space occupied is small, and there is no risk of leakage.

[0026] The utility model further comprises a heat insulation board 3, which is provided with a through hole 31, and the sprue bushing 1 and the heat insulation bushing 2 outside thereof are passed through the through hole 31. The heat insulation board 3 is located between the middle position of the sprue bushing 1 and the inlet end 12 of the sprue bushing 1. In a specific application, the heat insulation board 3 is installed on the heating cavity to prevent the sprue bushing 1 from contacting the heating cavity.

[0027] The outer side of the sprue bushing 1 is provided with outer flanges at the two ends of the corresponding insulation sleeve 2 for easy identification. The first outer flange 13 is located at the inlet end 12 of the sprue bushing 1, and the second outer flange 14 is located at the other end. The inner sides of the two ends of the insulation sleeve 2 are tightly connected to the corresponding outer flanges. In other embodiments, the two ends of the insulation sleeve may be provided with inner flanges, and the inner flanges at the two ends of the insulation sleeve are tightly connected to the inner side of the sprue bushing.

[0028] The heat insulating sleeve 2 is provided with at least one liquid injection port 21 connected to the coolant flow channel 11, and the liquid injection port 21 is connected to a liquid inlet pipe. The liquid inlet pipe is an extended water pipe 4 to facilitate the input of the coolant. The liquid injection port 21 is located on the side of one end of the heat insulating sleeve 2 close to the inlet end 12 of the sprue sleeve 1.

[0029] In this embodiment, there are two injection ports 21, and the two injection ports 21 are located in the same radial direction of the thermal insulation sleeve 1. In other embodiments, there may be multiple injection ports 21, and the multiple injection ports 21 are distributed along the circumference of the thermal insulation sleeve 2.

[0030] The utility model discloses a main runner bushing structure of a thermosetting material. During injection molding production, the coolant enters the coolant flow channel 11 between the heat insulating sleeve 2 and the gate sleeve 1 through the extended water pipe 4 to cool the gate sleeve 1. At the same time, the heat insulating plate 3 isolates the high-temperature molding area to ensure that the thermosetting material in the gate sleeve 1 is always in a molten state, so that the gate sleeve 1 does not generate main runner gate waste during the continuous molding process. After using the utility model, the thermosetting material can be the same as the thermoplastic material in the continuous molding process, and the main runner gate waste is not generated, thereby achieving the purpose of reducing costs. The existing production tooling only needs to be slightly modified to use the utility model, and the economic benefits are high.

[0031] The utility model discloses a main flow channel bushing structure made of a thermosetting material, and the uninvolved parts are the same as those in the prior art or can be implemented by adopting the prior art.

[0032] The above embodiments are only used to further illustrate a main channel bushing structure of a thermosetting material of the utility model, but the utility model is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model fall within the protection scope of the technical solution of the utility model.

Claims

1. A main runner bushing structure of a thermosetting material, comprising a sprue bushing and a heat insulation sleeve, wherein the heat insulation sleeve is arranged outside the sprue bushing; characterized in that: The heat insulation sleeve and the sprue sleeve are connected to form an integrated structure, and a cooling liquid flow channel surrounding the outer periphery of the sprue sleeve is formed between the two.

2. The main runner bushing structure of thermosetting material according to claim 1, characterized in that: It also includes a heat insulation board, which is provided with a through hole, and the gate sleeve and the heat insulation sleeve outside it are passed through the through hole.

3. The main runner bushing structure of thermosetting material according to claim 2, characterized in that: The heat insulation plate is located between the middle position of the sprue bushing and the inlet end of the sprue bushing.

4. The main runner bushing structure of thermosetting material according to claim 1, characterized in that: The heat insulation sleeve and the gate sleeve are connected to form an integrated structure through interference burning.

5. The main runner bushing structure of thermosetting material according to claim 1 or 4, characterized in that: The outer side of the gate sleeve is respectively provided with outer flanges at two ends corresponding to the thermal insulation sleeve, and the inner side surfaces at two ends of the thermal insulation sleeve are respectively tightly connected to the corresponding outer flanges.

6. The main runner bushing structure of thermosetting material according to claim 1, characterized in that: The heat-insulating sleeve is provided with at least one liquid injection port communicating with the coolant flow channel, and the liquid injection port is connected with a liquid inlet pipe.

7. The main runner bushing structure of thermosetting material according to claim 6, characterized in that: The liquid injection port is located on a side surface of one end of the heat insulation sleeve close to the inlet end of the sprue sleeve.

8. The main runner bushing structure of thermosetting material according to claim 6, characterized in that: The liquid inlet pipe is an extended water pipe.

9. The main runner bushing structure of thermosetting material according to claim 6 or 7, characterized in that: There are multiple injection ports, and the multiple injection ports are distributed along the circumference of the thermal insulation sleeve.

10. The main runner bushing structure of thermosetting material according to claim 9, characterized in that: The number of the injection ports is two, and the two injection ports are located in the same radial direction of the thermal insulation sleeve.

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