A manifold for hot runner system

Abstract

The utility model relates to the technical field of hot runner injection molds, and discloses a manifold of a hot runner system, including a plate body, a material injection pipe is fixedly connected to the inside of the plate body, an electric heater is fixedly connected to the inner bottom end of the plate body, a partition is fixedly connected to the inner upper side of the plate body, a ventilation unit is arranged on the upper surface of the partition, an exhaust pipe is fixedly connected to the right end of the plate body, the left end of the exhaust pipe runs through the plate body, a cutting unit is arranged inside the left end of the exhaust pipe, a circulation pipe is fixedly connected to the upper surface of the plate body, and an air pump is fixedly connected to the outer side of the circulation pipe. In the utility model, a large number of bubbles can be blown into the heat transfer liquid through the cooperation of the exhaust pipe, the circulation pipe, the cutting unit and the air pump, so that the heat transfer liquid can flow disorderly, avoiding the situation where the mixing effect of the heat transfer liquid is limited due to the directional movement of the heat transfer liquid.

Description

Technical Field

[0001] The utility model relates to the technical field of hot runner injection molds, in particular to a manifold plate of a hot runner system. Background Art

[0002] The manifold is also called the hot runner manifold. It is the central component of the hot runner system. It distributes the plastic melt transmitted from the main nozzle to each injection point nozzle through the runner. The manifold can make the mold cavity evenly filled, the plastic flow balanced, and the system heat balanced. The heating components provide heat to the manifold, so that the plastic ejected from the main nozzle is in a molten state at each outlet.

[0003] After searching, Chinese patent announcement number: CN220614803U discloses a hot runner diverter plate, including a spoiler component that can drive the transmission shaft to rotate in the liquid storage tank, so that the spoiler can slide toward or in the opposite direction at the same time, can drive the heat transfer liquid to flow in the liquid storage tank, can make the heat transfer liquid in the liquid storage tank evenly mixed, can ensure that the injection pipe is heated evenly, and is conducive to the transportation of logistics.

[0004] In actual use, when the above-mentioned diverter plate is used to stir the heat transfer liquid through the spoiler component, the heat transfer liquid is driven to flow by the left and right reciprocating movement of the spoiler plate. The directional movement of the spoiler plate will cause the heat transfer liquid to flow only in a directional manner, so that the uniform mixing effect of the heat transfer liquid is limited. At the same time, the spoiler component set in the heat transfer liquid will also have a certain influence on the flow mixing of the heat transfer liquid, thereby affecting the uniform heating effect of the injection pipe. Therefore, a diverter plate of a hot runner system is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides a diverter plate of a hot runner system, aiming to improve the problem in the prior art that when the heat transfer liquid is driven to flow by a spoiler component to enhance the heating effect inside the diverter plate, the heat transfer liquid can only flow in a directional manner, resulting in reduced mixing effect and affecting the uniform heating effect inside the diverter plate.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a diverter plate of a hot runner system, comprising a plate body, an injection tube is fixedly connected to the inside of the plate body, an electric heater is fixedly connected to the inner bottom end of the plate body, a partition is fixedly connected to the inner upper side of the plate body, a ventilation unit is arranged on the upper surface of the partition, an exhaust pipe is fixedly connected to the right end of the plate body, the left end of the exhaust pipe passes through the plate body, a cutting unit is arranged inside the left end of the exhaust pipe, a circulation pipe is fixedly connected to the upper surface of the plate body, and an air pump is fixedly connected to the outer side of the circulation pipe.

[0007] As a further description of the above technical solution:

[0008] Gooseneck tubes are fixedly connected to the left and right ends of the circulation pipe, and crosses are fixedly connected to the left and right ends of the circulation pipe. The upper surface of the cross is fixedly connected to a limit rod, and a sealing block is sleeved on the outer side of the limit rod.

[0009] As a further description of the above technical solution:

[0010] The ventilation unit comprises a straight tube, the straight tube is fixedly connected to the upper surface of the partition, the upper surface of the partition is provided with a ventilation hole, and the straight tube is located directly above the ventilation hole.

[0011] As a further description of the above technical solution:

[0012] The cutting unit comprises a circular plate, which is fixedly connected to the inside of the left end of the exhaust pipe, and a filter hole is opened on the left surface of the circular plate.

[0013] As a further description of the above technical solution:

[0014] The left bottom end of the circulation pipe is fixedly connected to the upper surface of the plate body, and the left bottom end of the circulation pipe penetrates the plate body.

[0015] As a further description of the above technical solution:

[0016] The right bottom end of the circulation pipe is fixedly connected to the right end of the exhaust pipe.

[0017] As a further description of the above technical solution:

[0018] The inner center of the gooseneck tube protrudes inwards, and the size of the sealing block is adapted to the size of the gooseneck tube.

[0019] As a further description of the above technical solution:

[0020] The inner wall diameter of the straight tube is the same as the diameter of the air hole.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the heat transfer liquid inside the plate body can be heated by the cooperation of the electric heater and the partition, thereby realizing uniform heating of the injection pipe, so that the material discharged from the injection pipe can be in a molten state, thereby avoiding solidification of the material in the injection pipe. A large number of bubbles can be injected into the heat transfer liquid by the cooperation of the exhaust pipe, the circulation pipe, the cutting unit and the air pump, so that the heat transfer liquid can flow disorderly, thereby avoiding the situation in which the mixing effect of the heat transfer liquid is limited due to the directional movement of the heat transfer liquid.

[0023] 2. In the utility model, by cooperating with the gooseneck tube, cross, limit rod and sealing block, when the diverter plate tilts and causes the heat transfer liquid to enter the circulation pipe, the end of the circulation pipe can be automatically sealed to prevent a large amount of heat transfer liquid from flowing into the air pump and causing damage to the air pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the whole of a manifold of a hot runner system proposed by the utility model;

[0025] Figure 2 A schematic diagram of a top section view of a manifold of a hot runner system proposed by the utility model;

[0026] Figure 3 A schematic diagram of the interior of a manifold of a hot runner system proposed by the utility model;

[0027] Figure 4 A schematic diagram of the interior of an air pump, a circulation pipe and an exhaust pipe of a manifold of a hot runner system proposed by the utility model;

[0028] Figure 5 A manifold for a hot runner system proposed by the utility model Figure 4 Schematic diagram at part A;

[0029] Figure 6 A manifold for a hot runner system proposed by the utility model Figure 4 Schematic diagram of part B.

[0030] Legend:

[0031] 1. Plate body; 2. Injection pipe; 3. Electric heater; 4. Partition; 41. Air vent; 42. Straight pipe; 5. Exhaust pipe; 51. Round plate; 52. Filter hole; 6. Circulation pipe; 7. Air pump; 8. Gooseneck tube; 9. Cross; 10. Limit rod; 11. Sealing block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figure 1-Figure 2The utility model provides an embodiment: a diverter plate of a hot runner system, comprising a plate body 1, a material injection pipe 2 is fixedly connected inside the plate body 1, the material injection pipe 2 comprises a diverter pipe and a main flow pipe, the plastic melt transmitted from the nozzle of the main flow channel can be distributed to each injection point nozzle through the material injection pipe 2, so that the mold cavity is evenly filled, an electric heater 3 is fixedly connected to the bottom end of the inner part of the plate body 1, a partition 4 is fixedly connected to the upper side of the inner part of the plate body 1, the partition 4 divides the inner space of the plate body 1 into two spaces, upper and lower, and the lower space can be filled with heat-conducting liquid. When the electric heater 3 is started, the heat-conducting liquid can be heated, and the inside of the injection pipe 2 can be evenly heated by completely covering the heat-conducting liquid, so that the material discharged from the discharge pipe can be guaranteed to be in a molten state, and the material in the diverter pipe and the main flow pipe can be prevented from solidifying.

[0034] Reference Figure 3-Figure 5 A ventilation unit is arranged on the upper surface of the partition 4, and the ventilation unit includes a straight pipe 42, which is fixedly connected to the upper surface of the partition 4. A ventilation hole 41 is opened on the upper surface of the partition 4, and the straight pipe 42 is located directly above the ventilation hole 41. The inner wall diameter of the straight pipe 42 is the same as the diameter of the ventilation hole 41. The gas injected into the thermal liquid can flow to the upper space through the ventilation hole 41 and the straight pipe 42. When the gas is injected into the thermal liquid and causes the thermal liquid to turn over, the straight pipe 42 can protect the turned thermal liquid to prevent the liquid from splashing to the upper side of the partition 4, which makes it unable to return to the lower space and affects the use of the thermal liquid. The right end of the plate body 1 is fixedly connected with an exhaust pipe 5, and the exhaust The left end of the tube 5 passes through the plate body 1, and a circulation tube 6 is fixedly connected to the upper surface of the plate body 1. The left bottom end of the circulation tube 6 is fixedly connected to the upper surface of the plate body 1, and the left bottom end of the circulation tube 6 passes through the plate body 1. The right bottom end of the circulation tube 6 is fixedly connected to the right end of the exhaust pipe 5. An air pump 7 is fixedly connected to the outside of the circulation tube 6. The circulation tube 6, the exhaust pipe 5 and the interior of the plate body 1 form a complete circulation channel. When the air pump 7 is started, the air in the upper space can be drawn into the heat transfer liquid through the circulation tube 6 and the exhaust pipe 5 to stir the heat transfer liquid, thereby improving the flow efficiency of the heat transfer liquid, thereby making the heat transfer liquid evenly mixed, so that the injection tube 2 can be heated evenly.

[0035] A cutting unit is provided inside the left end of the exhaust pipe 5, and the cutting unit includes a circular plate 51, which is fixedly connected to the left end of the exhaust pipe 5. A filter hole 52 is provided on the left surface of the circular plate 51. When the gas is pumped into the lower space through the exhaust pipe 5, the gas will be cut into multiple air flows by the circular plate 51 and the filter hole 52 when passing through the filter hole 52. When entering the thermal liquid, multiple bubbles will be formed and blown into the thermal liquid to stir the thermal liquid in a disorderly manner, so that the thermal liquid can flow in a disorderly manner in the lower space, further improving the mixing efficiency of the thermal liquid and avoiding the situation where the mixing effect of the thermal liquid is limited due to the directional stirring of the thermal liquid.

[0036] Reference Figure 6 Gooseneck tubes 8 are fixedly connected to the left and right ends of the circulation pipe 6, and the inner center of the gooseneck tube 8 protrudes inward. Crosses 9 are fixedly connected to the left and right ends of the circulation pipe 6. A limiting rod 10 is fixedly connected to the upper surface of the cross 9. A sealing block 11 is sleeved on the outer side of the limiting rod 10. The sealing block 11 can perform linear movement in the upper and lower directions at the limiting rod 10. The size of the sealing block 11 is matched with the size of the gooseneck tube 8. When the sealing block 11 moves upward and enters the gooseneck tube 8, the end of the circulation pipe 6 is sealed.

[0037] When the manifold is tilted during transportation or disassembly, the heat transfer liquid may flow into the circulation pipe 6. At this time, the heat transfer liquid will push the sealing block 11, so that the sealing block 11 enters the gooseneck tube 8 to seal the end of the circulation pipe 6, thereby preventing a large amount of heat transfer liquid from flowing into the air pump 7 and causing damage to the air pump 7.

[0038] Working principle: When the diverter plate is in use, the electric heater 3 can be started to heat the heat-conducting liquid. The injection tube 2 can be completely wrapped by the heat-conducting liquid to achieve uniform heating of the inside of the injection tube 2, ensuring that the material discharged from the discharge tube is in a molten state and preventing the material in the injection tube 2 from solidifying. During the heating process, the air pump 7 can be started to extract the gas at the upper end of the plate body 1 into the exhaust pipe 5. The gas will be cut into multiple air ducts when passing through the cutting unit. Finally, the gas will form a number of bubbles and enter the heat-conducting liquid to stir the heat-conducting liquid, causing the heat-conducting liquid to flow disorderly, further improving the effect of uniform mixing of the heat-conducting liquid. When the diverter plate is tilted and the heat-conducting liquid enters the inside of the circulation tube 6, it will push the sealing block 11 to move to the inside of the gooseneck tube 8 to seal the gooseneck tube 8, thereby preventing a large amount of heat-conducting liquid from pouring into the air pump 7 and damaging the air pump 7.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A manifold for a hot runner system, comprising a plate body (1), characterized in that: The plate body (1) is fixedly connected to an injection pipe (2) inside, the bottom end of the plate body (1) is fixedly connected to an electric heater (3), the upper side of the plate body (1) is fixedly connected to a partition (4), the upper surface of the partition (4) is provided with a ventilation unit, the right end of the plate body (1) is fixedly connected to an exhaust pipe (5), the left end of the exhaust pipe (5) passes through the plate body (1), the left end of the exhaust pipe (5) is provided with a cutting unit inside, the upper surface of the plate body (1) is fixedly connected to a circulation pipe (6), and the outer side of the circulation pipe (6) is fixedly connected to an air pump (7).

2. A manifold for a hot runner system according to claim 1, characterized in that: Gooseneck tubes (8) are fixedly connected to the left and right ends of the circulation pipe (6), crosses (9) are fixedly connected to the left and right ends of the circulation pipe (6), a limit rod (10) is fixedly connected to the upper surface of the cross (9), and a sealing block (11) is sleeved on the outer side of the limit rod (10).

3. The manifold of a hot runner system according to claim 1, characterized in that: The ventilation unit comprises a straight tube (42), wherein the straight tube (42) is fixedly connected to the upper surface of the partition (4), and a ventilation hole (41) is provided on the upper surface of the partition (4), and the straight tube (42) is located directly above the ventilation hole (41).

4. The manifold of a hot runner system according to claim 1, characterized in that: The cutting unit comprises a circular plate (51), the circular plate (51) is fixedly connected to the inside of the left end of the exhaust pipe (5), and a filter hole (52) is provided on the left side surface of the circular plate (51).

5. The manifold of a hot runner system according to claim 1, characterized in that: The left bottom end of the circulation pipe (6) is fixedly connected to the upper surface of the plate body (1), and the left bottom end of the circulation pipe (6) passes through the plate body (1).

6. The manifold of a hot runner system according to claim 1, characterized in that: The right bottom end of the circulation pipe (6) is fixedly connected to the right end of the exhaust pipe (5).

7. The manifold of a hot runner system according to claim 2, characterized in that: The inner center of the gooseneck tube (8) protrudes inwards, and the size of the sealing block (11) is adapted to the size of the gooseneck tube (8).

8. The manifold of a hot runner system according to claim 3, characterized in that: The inner wall diameter of the straight tube (42) is the same as the diameter of the air vent (41).

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