Hot runner injection mold with heat insulation runner

Abstract

An embodiment of the utility model provides a hot runner injection mold with a heat insulation runner, and relates to a lower mold, an upper mold is arranged above the lower mold, a splitter plate is fixedly connected to an inner cavity of the upper mold, material guide holes are formed in the top of the splitter plate and the top of the upper mold, a feeding pipe is fixedly connected to the top of the upper mold, and the heat insulation runner is arranged in the feeding pipe. A pair of discharging holes are formed in the bottom of the splitter plate, a pair of hot nozzles are fixedly connected to the bottom of the splitter plate, the bottoms of the hot nozzles penetrate through the bottom of the upper mold, a first heat insulation ceramic layer is fixedly connected to the inner wall of a material guiding hole, and a second heat insulation ceramic layer is fixedly connected to the inner wall of the splitter plate; a third heat insulation ceramic layer is fixedly connected to the inner wall of the discharging hole, a rectangular cavity is formed in the lower die, a pushing mechanism is arranged in the lower die, two pairs of limiting grooves are formed in the top of the lower die, and the anti-condensation device has the advantage of being good in anti-condensation effect.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to hot runner injection mold technical field, especially hot runner injection mold with heat insulation runner. BACKGROUND

[0002] Hot runner mold refers to the use of heating device to make the runner inside the melt is always not solidified mold. Because it is shorter than the traditional mold forming cycle, and more economical raw materials, so hot runner mold in the world today all industrial developed countries and regions are extremely widely used, hot runner system generally by hot nozzle, flow divider, temperature control box and accessories and other parts. Hot nozzle generally includes two kinds: open hot nozzle and needle valve type hot nozzle.

[0003] But the existing hot runner mold is through the copper ring distributed on the mold to realize the heating of the embryo, after the embryo enters the hot runner, the heat of the internal embryo is easy to conduct out and cooling, if the long time stop, the internal embryo will appear condensation, affect injection, therefore, in order to correct the above defects, we propose hot runner injection mold with heat insulation runner. SUMMARY

[0004] In view of the above problems, the embodiment of the present application provides hot runner injection mold with heat insulation runner to solve the problem that the heat of the internal embryo is easy to conduct out and cooling.

[0005] The embodiment of the present application provides hot runner injection mold with heat insulation runner, including lower mold: the upper part of the lower mold is provided with upper mold, the inner cavity of the upper mold is fixedly connected with flow divider, the flow divider and the top of the upper mold are provided with guide hole, the top of the upper mold is fixedly connected with feeding pipe, the bottom of the flow divider is provided with a pair of discharge holes, and the bottom of the flow divider is fixedly connected with a pair of hot nozzles, the bottom of the pair of hot nozzles penetrates the bottom of the upper mold, the inner wall of the guide hole is fixedly connected with first heat insulation ceramic layer, the inner wall of the flow divider is fixedly connected with second heat insulation ceramic layer, the inner wall of the discharge hole is fixedly connected with third heat insulation ceramic layer, the lower mold is provided with rectangular cavity, and the lower mold is provided with pushing mechanism.

[0006] In some embodiments, the top of the lower mold is provided with two pairs of limiting grooves, the limiting grooves are provided with limiting rods, and the top end of the limiting rod is fixedly connected to the bottom of the upper mold.

[0007] In some embodiments, the top of the upper mold is provided with a pair of first heating rods, and the bottom end of the first heating rod penetrates the discharge hole.

[0008] In some embodiments, the side wall of the upper mold is fixedly connected with a plurality of second heating rods, one end of the plurality of second heating rods penetrates the side wall of the flow divider and extends to the inner cavity of the flow divider.

[0009] In some embodiments, the pushing mechanism comprises a pair of electric telescopic rods, the pair of electric telescopic rods are fixedly connected to the inner wall of the rectangular cavity, and the output shafts of the electric telescopic rods penetrate through the side wall of the rectangular cavity and are fixedly connected with transmission blocks.

[0010] In some embodiments, the plurality of second heating rods are equidistantly distributed in the inner cavity of the flow distribution plate.

[0011] The above description is only a summary of the technical solutions of the embodiments of the present application. In order to more clearly understand the technical means of the embodiments of the present application, the embodiments can be implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the following specific embodiments of the present application are described.

[0012] 1. By arranging the flow distribution plate, the first heating rod and the second heating rod, the plastic raw material in the upper mold can be continuously heated when the hot melt plastic raw material is introduced into the upper mold, and then the plastic raw material directly contacts the heat source, so that the flow effect of the plastic raw material is maintained, the plastic raw material is prevented from condensing, and the mold injection effect is improved.

[0013] 2. By arranging the flow distribution plate, the material guide hole, the material outlet hole, the first heat insulation ceramic layer, the second heat insulation ceramic layer and the third heat insulation ceramic layer, when the plastic hot melt material is introduced into the flow distribution plate, the material guide hole and the material outlet hole, the heat insulation runner formed by the first heat insulation ceramic layer, the second heat insulation ceramic layer and the third heat insulation ceramic layer is used to block the heat transfer of the plastic raw material, so as to maintain the hot melt effect of the plastic raw material, thereby further improving the flowability of the plastic raw material. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creating laborious work.

[0015] Figure 1 Some perspective views of the present application.

[0016] Figure 2 The overall structure of the present application is shown in the schematic diagram.

[0017] Figure 3 The front view of the upper mold and the second heating rod.

[0018] Figure 4 The top view of the upper mold and the flow distribution plate.

[0019] Figure 5 The perspective view of the electric telescopic rod and the transmission block.

[0020] BRIEF DESCRIPTION OF DRAWINGS

[0021] 1. lower mold; 2. upper mold; 3. flow divider; 4. material guide hole; 5. feeding pipe; 6. discharging hole; 7. hot nozzle; 8. first heat-insulating ceramic layer; 9. second heat-insulating ceramic layer; 10. third heat-insulating ceramic layer; 11. rectangular cavity; 12. limiting groove; 13. limiting rod; 14. first heating rod; 15. second heating rod; 16. electric telescopic rod; 17. transmission block. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0023] The terms “comprise” and “have” and any variations thereof in the specification and claims of the present application and the accompanying drawings are intended to cover but not exclude other contents. The word “one” or “a” does not exclude the presence of multiple. Unless otherwise specified, the meaning of “multiple” is two or more (including two).

[0024] The orientation words appearing in the following description are the directions shown in the drawings, and are not limited to the specific structure of the present application. For example, in the description of the present application, the orientation or position relationship indicated by the terms “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “inner”, “outer”, “axial direction”, “radial direction”, “circumferential direction” and the like are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0025] In addition, the expressions of the indicated directions such as the X direction, the Y direction and the Z direction for describing the operation and structure of each component of the present embodiment are not absolute but relative, and although the indications are appropriate when each component is in the position shown in the drawings, the directions should be interpreted differently when the positions are changed to correspond to the changes.

[0026] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, the "connection" or "connecting" of mechanical structure can mean physical connection, for example, fixed connection, detachable connection or integral connection. The "connection" or "connecting" of circuit structure can mean not only physical connection, but also electrical connection or signal connection, for example, it can be direct connection, that is, physical connection, or indirect connection through at least one intermediate element, as long as the circuit is connected. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application.

[0028] The present application provides a hot runner injection mold with an adiabatic runner, comprising a lower mold 1: the upper part of the lower mold 1 is provided with an upper mold 2, the inner cavity of the upper mold 2 is fixedly connected with a shunt plate 3, the shunt plate 3 and the top of the upper mold 2 are provided with a material guiding hole 4, the top of the upper mold 2 is fixedly connected with a feeding pipe 5, the bottom of the shunt plate 3 is provided with a pair of discharge holes 6, and the bottom of the shunt plate 3 is fixedly connected with a pair of hot nozzles 7, the bottom of the pair of hot nozzles 7 penetrates through the bottom of the upper mold 2, the inner wall of the material guiding hole 4 is fixedly connected with a first adiabatic ceramic layer 8, the inner wall of the shunt plate 3 is fixedly connected with a second adiabatic ceramic layer 9, and the inner wall of the discharge hole 6 is fixedly connected with a third adiabatic ceramic layer 10, a rectangular cavity 11 is provided on the lower mold 1, and a material pushing mechanism is arranged in the lower mold 1.

[0029] In the technical solutions of the present application, the installation stability of the upper mold 2 and the lower mold 1 is ensured by the limiting rod 13 and the limiting groove 12, the top of the lower mold 1 is provided with two pairs of limiting grooves 12, the limiting rod 13 is arranged in the limiting groove 12, and the top end of the limiting rod 13 is fixedly connected to the bottom of the upper mold 2.

[0030] In the technical solutions of the present application, the plastic raw material in the discharge hole 6 is heated to avoid the condensation and blockage of the discharge hole 6, and a pair of first heating rods 14 penetrates through the top of the upper mold 2, and the bottom end of the first heating rod 14 penetrates through the discharge hole 6.

[0031] In the technical solutions of the present application, the plastic raw material is heated by the second heating rod 15 to avoid condensation, and a plurality of second heating rods 15 are fixedly connected to the side wall of the upper mold 2, one end of the plurality of second heating rods 15 penetrates through the side wall of the shunt plate 3 and extends into the inner cavity of the shunt plate 3.

[0032] The technical scheme of the embodiment of the application is characterized in that the injection molding part can be pushed upward by the pushing mechanism, the convenience of taking the injection molding part is improved, the pushing mechanism comprises a pair of electric telescopic rods 16, the electric telescopic rods 16 are fixedly connected to the inner wall of the rectangular cavity 11, the output shafts of the electric telescopic rods 16 penetrate through the side wall of the rectangular cavity 11 and are fixedly connected with transmission blocks 17, and the second heating rods 15 are equidistantly distributed in the inner cavity of the distribution plate 3.

[0033] Working principle: in use, hot melt plastic raw materials are introduced through the feeding pipe 5, the plastic raw materials enter the distribution plate 3 through the material guide holes 4, and then flow to the discharge holes 6 through the distribution plate 3, enter the hot nozzle 7 through the discharge holes 6, and then quickly spray into the lower mold 1 through the hot nozzle 7, so as to complete injection molding, in the process of plastic raw material flow, the first heating rod 14 and the second heating rod 15 are started, the plastic in the discharge hole 6 is heated by the first heating rod 14, and the plastic in the distribution plate 3 is heated by the second heating rod 15 at the same time, so as to avoid the condensation of the plastic, the heat transfer is blocked by the first heat insulation ceramic layer 8 and the second heat insulation ceramic layer 9, the hot melt state of the plastic raw material is maintained, so as to improve the flow effect of the plastic raw material, when the injection molding part cools down, the upper mold 2 is taken upward, the electric telescopic rod 16 is started, the electric telescopic rod 16 pushes the transmission block 17 upward, the transmission block 17 pushes the injection molding part upward, so as to facilitate the operator to take the injection molding part.

[0034] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, the combination of features of different embodiments means to be within the scope of the application and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0035] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A hot runner injection mold with an insulated runner, characterized by, The utility model relates to a mould for producing plastic parts, which comprises a lower mould (1), an upper mould (2) arranged above the lower mould (1), a flow distribution plate (3) fixedly connected to the inner cavity of the upper mould (2), a material guiding hole (4) arranged in the top of the flow distribution plate (3) and the upper mould (2), a feeding pipe (5) fixedly connected to the top of the upper mould (2), a pair of discharging holes (6) arranged in the bottom of the flow distribution plate (3), a pair of hot nozzles (7) fixedly connected to the bottom of the flow distribution plate (3), the bottom of the hot nozzles (7) penetrating through the bottom of the upper mould (2), a first heat insulation ceramic layer (8) fixedly connected to the inner wall of the material guiding hole (4), a second heat insulation ceramic layer (9) fixedly connected to the inner wall of the flow distribution plate (3), a third heat insulation ceramic layer (10) fixedly connected to the inner wall of the discharging hole (6), a rectangular cavity (11) arranged in the upper mould (1), and a material pushing mechanism arranged in the lower mould (1).

2. The hot-runner injection mold with insulated runners of claim 1, wherein, A pair of limiting grooves (12) are arranged in the top of the lower mould (1), and a limiting rod (13) is arranged in the limiting groove (12).

3. The hot-runner injection mold with insulated runners of claim 1, wherein, A pair of first heating rods (14) penetrate through the top of the upper mould (2), and the bottom of the first heating rods (14) penetrates through the discharging hole (6).

4. The hot-runner injection mold with thermal runner of claim 1, wherein, A plurality of second heating rods (15) are fixedly connected to the side wall of the upper mould (2), one end of the second heating rods (15) penetrates through the side wall of the flow distribution plate (3) and extends to the inner cavity of the flow distribution plate (3).

5. The hot-runner injection mold with thermal runner of claim 1, wherein, The material pushing mechanism comprises a pair of electric telescopic rods (16), the electric telescopic rods (16) are fixedly connected to the inner wall of the rectangular cavity (11), and the output shaft of the electric telescopic rod (16) penetrates through the side wall of the rectangular cavity (11) and is fixedly connected with a transmission block (17).

6. The hot-runner injection mold with insulated runners of claim 4, wherein, The second heating rods (15) are equidistantly distributed in the inner cavity of the flow distribution plate (3).

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