Pouring gate structure capable of improving heating efficiency and heat insulation performance

Abstract

The utility model discloses a sprue bush structure capable of improving heating efficiency and heat insulation performance, which comprises a relay pipeline, a hot runner sprue bush and a heat insulation ring, and is characterized in that the sprue bush is connected to the bottom of a splicing pipe fitting, a hot runner nozzle extends out of the bottom of the sprue bush, and the heat insulation ring is arranged at the bottom of the sprue bush; the heat insulation ring is sleeved outside the hot runner nozzle, the hot runner nozzle extends out of the bottom of the heat insulation ring, the heat insulation ring is made of a titanium alloy material, the heating coil is arranged in the sprue bush, and during injection molding, the temperature control precision of the sprue bush can be improved and the heat loss can be reduced through the heating coil integrated in the sprue bush; heat conduction to the mold is reduced, local overheating of the mold is avoided, and the heating efficiency and the heat insulation performance can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding technical field, concretely is a gate structure that can improve heating efficiency and heat insulation. BACKGROUND

[0002] In the injection molding process, hot runner system is widely used in the control of the flow of molten plastic. The gate is a key component in the hot runner system, used to control the injection and sealing of plastic. The traditional gate is prone to heat loss in high temperature and high pressure environment, resulting in uneven sealing or premature cooling of plastic, affecting product quality. In addition, heat conduction of the sealing surface position may cause local overheating of the mold, affecting the service life of the mold. Therefore, there is an urgent need for a gate design that can improve heating efficiency and heat insulation performance. SUMMARY

[0003] This section aims to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name. Such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In view of the above and / or the problems existing in the prior art, the utility model is proposed.

[0005] Therefore, the purpose of the utility model is to provide a gate structure that can improve heating efficiency and heat insulation performance. The gate is connected to the bottom of the adapter pipe, the hot runner nozzle extends from the bottom of the gate, and the bottom of the gate is provided with a heat insulation ring, the heat insulation ring is sleeved outside the hot runner nozzle, and the hot runner nozzle extends from the bottom of the heat insulation ring. The heat insulation ring is made of titanium alloy, a heating coil is arranged inside the gate, and the temperature control precision of the gate is improved by the integrated heating coil inside the gate during injection molding, heat loss is reduced, and the low thermal conductivity of titanium alloy is used to reduce heat conduction to the mold, avoiding local overheating of the mold. It can effectively improve the heating efficiency and heat insulation performance.

[0006] To solve the above technical problems, according to one aspect of the utility model, the utility model provides the following technical scheme:

[0007] A gate structure that can improve heating efficiency and heat insulation performance, comprising:

[0008] Adapter pipe, the bottom of the adapter pipe has a hot runner nozzle, the inside of the adapter pipe has an adapter runner, the adapter runner communicates with the hot runner nozzle, the adapter pipe is connected with the injection molding equipment, and the adapter runner communicates with the injection port of the external injection molding equipment;

[0009] The hot runner nozzle is sleeved on the bottom of the connecting pipe, the bottom of the hot runner nozzle is provided with a nozzle connecting sleeve, the inside of the hot runner nozzle is provided with a plurality of heating coils, the inside of the hot runner nozzle is provided with a first connecting groove, the heating coils heat the inside of the first connecting groove, the inside of the nozzle connecting sleeve is provided with a second connecting groove, the second connecting groove extends to the bottom of the nozzle connecting sleeve, the bottom of the connecting pipe is embedded in the first connecting groove, the hot runner nozzle is embedded in the second connecting groove, and the bottom end of the hot runner nozzle extends out of the bottom of the second connecting groove.

[0010] The heat insulation ring is sleeved outside the nozzle connecting sleeve, and the heat insulation ring is made of titanium alloy material to prevent local overheating of the mold.

[0011] As a preferred scheme of the gate structure capable of improving heating efficiency and heat insulation performance, the bottom of the connecting pipe is provided with a connecting groove, the top of the hot runner nozzle is provided with a connecting surface outside the opening of the first connecting groove, and the top of the connecting groove abuts against the connecting surface when the bottom of the connecting pipe extends into the first connecting groove.

[0012] As a preferred scheme of the gate structure capable of improving heating efficiency and heat insulation performance, the inside of the heat insulation ring is provided with a through groove, the inner diameter of the through groove is consistent with the outer diameter of the nozzle connecting sleeve, the nozzle connecting sleeve is clamped on the inner wall of the through groove, and the top of the through groove is provided with a mounting groove, and the mounting groove is provided with a sealing ring.

[0013] As a preferred scheme of the gate structure capable of improving heating efficiency and heat insulation performance, the bottom of the hot runner nozzle surrounds the nozzle connecting sleeve with the nozzle connecting sleeve as the center, and the top of the heat insulation ring abuts against the sealing surface.

[0014] As a preferred scheme of the gate structure capable of improving heating efficiency and heat insulation performance, the inside of the hot runner nozzle is integrated with a temperature control system, the temperature control system is connected with an external control device, the temperature control system is connected with the heating coils, and the temperature control system is used for accurately controlling the temperature of the heating coils.

[0015] As a preferred scheme of the gate structure capable of improving heating efficiency and heat insulation performance, the hot runner nozzle is made of high-temperature-resistant and wear-resistant material, and the surface is subjected to plating or coating treatment, so as to improve wear resistance and corrosion resistance.

[0016] As a kind of preferred scheme of the utility model discloses a gate structure capable of improving heating efficiency and heat insulation performance, it further includes relay joint, the relay joint is located at the top of the continuation pipe piece, the continuation pipe piece is externally sleeved with oil connecting sleeve, the relay joint top is equipped with relay runner, the relay runner is communicated with the continuation runner, the relay joint bottom is equipped with clamping jaw, the clamping jaw is internally provided with clamping groove, the connecting sleeve is sleeved in the clamping jaw, and the connecting sleeve top is abutted to the clamping groove.

[0017] Compared with prior art: by connecting the gate in the continuation pipe piece bottom, hot runner nozzle extends from the gate bottom, and the gate bottom is provided with heat insulation ring, heat insulation ring is sleeved outside hot runner nozzle, and hot runner nozzle extends from the heat insulation ring bottom, heat insulation ring adopts titanium alloy material, heating coil is arranged in the gate, in injection, the temperature control precision of gate can be improved by the integrated heating coil in the gate, heat loss is reduced, and the low thermal conductivity of titanium alloy is utilized, heat conduction to mold is reduced, local overheating of mold is avoided, heating efficiency and heat insulation performance can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the utility model will be described in detail below in combination with drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor under the premise of the drawings. Wherein:

[0019] Figure 1 It is the overall structure diagram of the utility model for a kind of gate structure capable of improving heating efficiency and heat insulation performance;

[0020] Figure 2 It is the hot runner gate structure diagram of the utility model for a kind of gate structure capable of improving heating efficiency and heat insulation performance;

[0021] Figure 3 It is the heat insulation ring structure diagram of the utility model for a kind of gate structure capable of improving heating efficiency and heat insulation performance. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model will be described in detail below in combination with drawings.

[0023] Second, the utility model in combination with the schematic diagram is described in detail, in detail the utility model embodiment is for being convenient for illustration, the sectional view of the device structure will not be enlarged locally according to the general proportion, and the schematic diagram is only an example, it should not limit the range of the utility model protection here. In addition, three-dimensional spatial dimensions of length, width and depth should be included in actual production.

[0024] In order to make the purpose, technical scheme and advantage of the utility model more clear, the embodiment of the utility model will be described in further detail below in combination with the drawings.

[0025] The utility model provides a gate structure that can improve heating efficiency and heat insulation performance, by connecting the gate at the bottom of the adapter pipe, the hot runner nozzle extends from the bottom of the gate, and the bottom of the gate is provided with a heat insulation ring, the heat insulation ring is sleeved outside the hot runner nozzle, and the hot runner nozzle extends from the bottom of the heat insulation ring, the heat insulation ring is made of titanium alloy, a heating coil is arranged inside the gate, and the temperature control precision of the gate can be improved by the integrated heating coil inside the gate during injection molding, heat loss is reduced, and the low thermal conductivity of titanium alloy is used to reduce heat conduction to the mold, avoid local overheating of the mold, and effectively improve the heating efficiency and heat insulation performance.

[0026] For the problems to be solved above: the traditional gate is prone to heat loss under high temperature and high pressure environment, leading to uneven sealing glue or premature cooling of plastic, affecting product quality, in addition, heat conduction of the sealing surface position can cause local overheating of the mold, affecting the service life of the mold.

[0027] The solution is as follows: the gate structure of the embodiment can improve the heating efficiency and heat insulation performance, comprising an adapter pipe 100, a hot runner gate 200, a heat insulation ring 300 and a relay connector 400.

[0028] The bottom of the adapter pipe 100 has a hot runner nozzle 110, the inside of the adapter pipe 100 has an adapter runner 120, the adapter runner 120 communicates with the hot runner nozzle 110, the adapter pipe 100 is connected with the injection molding equipment, and the adapter runner 120 communicates with the injection molding port of the external injection molding equipment.

[0029] The hot runner nozzle 200 is arranged at the bottom of the adapter pipe 100, the bottom of the hot runner nozzle 200 is provided with a nozzle connecting sleeve 210, the inside of the hot runner nozzle 200 is provided with a plurality of heating coils 220, the inside of the hot runner nozzle 200 is provided with a first connecting groove 230, the heating coils 220 heat the inside of the first connecting groove 230, the inside of the nozzle connecting sleeve 210 is provided with a second connecting groove 240, the second connecting groove 240 extends to the bottom of the nozzle connecting sleeve 210, the bottom of the adapter pipe 100 is embedded in the inside of the first connecting groove 230, the hot runner nozzle 110 is embedded in the inside of the second connecting groove 240, and the bottom end of the hot runner nozzle 110 extends out from the bottom of the second connecting groove 240, the bottom of the adapter pipe 100 is provided with a connecting groove 130, the top of the connecting groove 130 abuts against the connecting surface 231 outside the opening of the first connecting groove 230 at the top of the hot runner nozzle 200, the inside of the hot runner nozzle 200 is integrated with a temperature control system, the temperature control system is connected with an external control device, the temperature control system is connected with the heating coils 220, and is used for accurately controlling the temperature of the heating coils 220, the hot runner nozzle 200 is made of high-temperature-resistant and wear-resistant material, and the surface is treated by plating or coating to improve wear resistance and corrosion resistance, when the adapter pipe 100 is connected with the hot runner nozzle 200, the bottom of the adapter pipe 100 is inserted into the inside of the first connecting groove 230 until the connecting surface 231 abuts against the connecting groove 130, the hot runner nozzle 200 is connected to the bottom of the adapter pipe 100, when the molten plastic flows in the adapter runner 120 to the bottom end of the adapter runner 120 and is located in the first connecting groove 230, the heating coils 220 are started to heat, the molten plastic in the adapter runner 120 in the part of the first connecting groove 230 is heated, heat loss is reduced, and the heating coils 220 are connected with the temperature control system, the accurate control of the temperature of the nozzle is realized by adjusting the heating power, and the whole hot runner nozzle 200 is made of hard alloy material, and the surface is treated by nitriding to improve wear resistance and corrosion resistance.

[0030] The heat insulation ring 300 is sleeved outside the nozzle connecting sleeve 210, and is made of titanium alloy material, used for preventing local overheating of the mold, a through groove 310 is formed in the heat insulation ring 300, the inner diameter of the through groove 310 is consistent with the outer diameter of the nozzle connecting sleeve 210, the nozzle connecting sleeve 210 is clamped in the inner wall of the through groove 310, the through groove 310 is provided with a mounting groove 320 at the top opening, the mounting groove 320 is internally provided with a sealing ring, the position of the nozzle connecting sleeve 210 surrounded by the nozzle connecting sleeve 210 at the bottom of the hot runner gate 200 is a sealing surface 211, the top of the heat insulation ring 300 abuts against the sealing surface 211, in use, the nozzle connecting sleeve 210 is inserted into the through groove 310 until the top of the heat insulation ring 300 abuts against the sealing surface 211, the heat insulation ring 300 is clamped on the outer wall of the nozzle connecting sleeve 210 and connected to the bottom of the hot runner gate 200, the heat insulation ring 300 forms a heat insulation layer between the hot runner gate 200 and the mold, reducing heat conduction to the mold and avoiding local overheating of the mold.

[0031] The relay joint 400 is located at the top of the connecting pipe 100, the connecting pipe 100 is sleeved with an oil connecting sleeve 140 outside, the relay joint 400 is provided with a relay flow channel 410 at the top, the relay flow channel 410 is communicated with the connecting flow channel 120, the relay joint 400 is provided with a clamping jaw 420 at the bottom, the clamping jaw 420 is internally provided with a clamping groove 421, the connecting sleeve 140 is sleeved in the clamping jaw 420 and abuts against the clamping groove 421 at the top, the top of the relay joint 400 is connected with an external injection molding equipment, the relay flow channel 410 is communicated with an injection molding channel of the injection molding equipment, the molten plastic enters the connecting flow channel 120 through the relay flow channel 410 and is sprayed out from the hot runner nozzle 110, in connecting the connecting pipe 100 and the relay joint 400, the connecting sleeve 140 is inserted into the clamping jaw 420 until the top of the connecting sleeve 140 abuts against the clamping groove 421, the clamping jaw 420 clamps the connecting sleeve 140 and the connecting pipe 100 at the bottom of the relay joint 400, and the relay flow channel 410 is communicated with the connecting flow channel 120 to complete the connection of the connecting pipe 100 and the relay joint 400.

[0032] Although the utility model has been described above with reference to the embodiments, various improvements can be made and equivalent parts can be replaced without departing from the scope of the utility model. In particular, as long as there is no structural conflict, the features in the embodiments disclosed by the utility model can be combined in any way, and the combinations are not described in this specification due to the consideration of omitting the length and saving resources. Therefore, the utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A gate structure capable of improving heating efficiency and thermal insulation performance, characterized in that, include: A connecting fitting (100) has a hot runner nozzle (110) at its bottom and a connecting flow channel (120) inside the connecting fitting (100). The connecting flow channel (120) is connected to the hot runner nozzle (110). The connecting fitting (100) is connected to an injection molding machine, and the connecting flow channel (120) is connected to the injection port of an external injection molding machine. A hot runner gate (200) is fitted onto the bottom of the connecting pipe fitting (100). The bottom of the hot runner gate (200) has a nozzle connecting sleeve (210). The hot runner gate (200) has multiple heating coils (220) inside. A first connecting groove (230) is opened inside the hot runner gate (200). The heating coils (220) heat the inside of the first connecting groove (230). A second connecting groove (240) is opened inside the nozzle connecting sleeve (210). The second connecting groove (240) extends to the bottom of the nozzle connecting sleeve (210). The bottom of the connecting pipe fitting (100) is fitted into the first connecting groove (230). The hot runner nozzle (110) is embedded into the second connecting groove (240), and the bottom end of the hot runner nozzle (110) extends out from the bottom of the second connecting groove (240). A heat insulation ring (300) is fitted outside the nozzle connecting sleeve (210), and the heat insulation ring (300) is made of titanium alloy to prevent local overheating of the mold.

2. The gating structure according to claim 1, which can improve heating efficiency and heat insulation performance, is characterized in that, The bottom of the connecting pipe fitting (100) is provided with a connecting groove (130), and the top of the hot runner gate (200) is located outside the opening of the first connecting groove (230) with a connecting surface (231). When the bottom of the connecting pipe fitting (100) extends into the first connecting groove (230), the top of the connecting groove (130) abuts against the connecting surface (231).

3. A gating structure according to claim 2 that can improve heating efficiency and thermal insulation performance, characterized in that, The heat insulation ring (300) has a through groove (310) inside. The inner diameter of the through groove (310) is the same as the outer diameter of the nozzle connecting sleeve (210). The nozzle connecting sleeve (210) is engaged with the inner wall of the through groove (310). The top opening of the through groove (310) has an installation groove (320), and the installation groove (320) has a sealing ring inside.

4. A gating structure according to claim 3 that can improve heating efficiency and thermal insulation performance, characterized in that, The bottom of the hot runner gate (200) is sealed with the nozzle connecting sleeve (210) as the center, and the top of the heat insulation ring (300) abuts against the sealing surface (211).

5. A gating structure according to claim 4 that can improve heating efficiency and thermal insulation performance, characterized in that, The hot runner gate (200) has an integrated temperature control system. The temperature control system is connected to an external control device and to the heating coil (220) for precise control of the temperature of the heating coil (220).

6. A gating structure according to claim 5 that can improve heating efficiency and thermal insulation performance, characterized in that, The hot runner gate (200) is made of high temperature and wear resistant material, and its surface is treated with a plating or coating to improve wear resistance and corrosion resistance.

7. A gating structure according to claim 6 that can improve heating efficiency and thermal insulation performance, characterized in that, It also includes a relay connector (400), which is located on top of the connecting pipe fitting (100). The connecting pipe fitting (100) is externally fitted with an oil connecting sleeve (140). A relay flow channel (410) is provided on the top of the relay connector (400), which is connected to the connecting flow channel (120). A clamp (420) is installed at the bottom of the relay connector (400). The clamp (420) has a snap-fit ​​groove (421) inside. The connecting sleeve (140) is fitted inside the clamp (420) and the top of the connecting sleeve (140) abuts against the snap-fit ​​groove (421).

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