Stable and reliable needle valve hot runner mold

Abstract

The utility model relates to the technical field of hot runner molds, and discloses a stable and reliable needle valve hot runner mold which comprises an upper mold structure and a lower mold structure, the upper mold structure comprises an upper mold, a heat dissipation bin is formed in the upper mold, and a needle valve hot runner is fixedly arranged in the upper mold in a penetrating mode. According to the stable and reliable needle valve hot runner mold, when a product in an injection molding bin needs to be rapidly cooled after injection molding is completed, a driving motor and a water suction pump can be started, the driving motor drives a driving shaft to rotate, and the driving shaft drives a driven shaft to synchronously rotate through a transmission belt, so that two cooling fans start to rotate; the cooling fan conducts air cooling operation on injection molding products, meanwhile, the water suction pump pumps cooling liquid from the cooling liquid box into the cooling liquid pipe, the cooling liquid flows in the water cooling bin to conduct water cooling operation on the injection molding products, the two cooling modes are combined to promote rapid cooling operation on the injection molding products, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot runner molds, in particular to a stable and reliable needle valve hot runner mold. Background Art

[0002] Hot runner molds are molds that use heating devices to keep the melt in the runner from solidifying. Because they have a shorter molding cycle than traditional molds and save more raw materials, hot runner molds are widely used in industrially developed countries and regions around the world. Hot runner systems are generally composed of hot nozzles, manifolds, temperature control boxes and accessories.

[0003] In the prior art, such as CN217476496U disclosed on the Chinese patent website, a hot runner for a mold with uniform heating can connect the top plate and the pad through a connecting mechanism, and at the same time connect the pad and the base to complete the assembly work, so that the disassembly and assembly of the mold is faster and the disassembly and assembly efficiency of the mold is greatly improved. However, this hot runner mold is not provided with a corresponding cooling structure, so that the product in the mold cannot be quickly cooled after injection molding, and only natural cooling is relied on, which affects the processing efficiency. Therefore, a stable and reliable needle valve hot runner mold is proposed to solve the problems mentioned in the above background. Utility Model Content

[0004] The utility model aims to provide a stable and reliable needle valve hot runner mold to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a stable and reliable needle valve hot runner mold, comprising an upper mold structure and a lower mold structure, the upper mold structure comprising an upper mold, a heat dissipation bin is provided in the upper mold, a needle valve hot runner is fixedly provided through the upper mold, a feed port is provided at the top of the needle valve hot runner, an air cooling component is provided in the upper mold, the lower mold structure comprises a lower mold, an injection molding bin is provided at the top of the lower mold, a water cooling bin is provided in the lower mold, a bottom plate is fixedly provided at the bottom of the lower mold, and a water cooling component is provided in the lower mold;

[0006] The air cooling component includes a driving motor fixedly connected to the top of the upper mold, the driving motor shaft passes through the upper mold and is connected to a driving shaft in the heat dissipation bin, a driven shaft is rotatably arranged on the top wall of the heat dissipation bin, the driven shaft is connected to the driving shaft through a transmission belt, and cooling fans are fixedly arranged at the bottom ends of the driving shaft and the driven shaft.

[0007] Preferably, the water cooling assembly includes a coolant tank fixedly connected to the top of the base plate, a liquid inlet is connected to the top of the coolant tank, the outer side of the coolant tank is connected with both ends of a coolant pipe, a water pump is fixedly provided on the outer side of one end of the coolant pipe, the coolant pipe passes through the lower mold and is arranged in a curved shape in the water cooling chamber.

[0008] By setting up a water cooling component, the water pump can be started to pump the coolant into the coolant pipe, and then the product in the injection molding chamber is cooled in the water cooling chamber, and the coolant finally circulates back into the coolant tank.

[0009] Preferably, two ventilation holes are opened on the top of the upper mold.

[0010] By providing ventilation holes, it can cooperate with the air cooling component to ensure air circulation in the heat dissipation compartment.

[0011] Preferably, two positioning rings are fixedly provided on the inner wall of the water cooling bin, and both positioning rings are penetrated and positionedly connected with the coolant pipe.

[0012] By providing a positioning ring, the portion of the coolant pipe in the water cooling bin can be fixed and positioned to avoid falling or bumping.

[0013] Preferably, four positioning through holes are provided at corresponding positions on the outer sides of the upper mold and the lower mold.

[0014] By providing the positioning through hole, the upper mold and the lower mold can be fixedly connected by fixing bolts, thereby ensuring stability during injection molding.

[0015] Preferably, a gate is provided at the bottom end of the needle valve hot runner, and the gate passes through the upper mold bottom plate.

[0016] By setting the gate, it is ensured that the injection material can accurately enter the injection chamber after the upper mold and the lower mold are fixedly connected.

[0017] Compared with the prior art, the utility model provides a stable and reliable needle valve hot runner mold, which has the following beneficial effects:

[0018] 1. The stable and reliable needle valve hot runner mold is provided with an air cooling component and a water cooling component, so that when the product in the injection molding chamber needs to be quickly cooled after the injection molding is completed, the driving motor and the water pump can be started, and the driving motor drives the driving shaft to rotate, and the driving shaft drives the driven shaft to rotate synchronously through the transmission belt, so that the two cooling fans start to rotate, and the cooling fans perform air cooling on the injection molding product. At the same time, the water pump draws coolant from the coolant tank into the coolant pipe, and the coolant flows in the water cooling chamber to perform water cooling on the injection molding product. The combination of the two cooling methods promotes the rapid cooling of the injection molding product, thereby improving the processing efficiency.

[0019] 2. The stable and reliable needle valve hot runner mold can position the coolant pipe in the water cooling chamber by setting a positioning ring, thereby ensuring the position stability of the coolant pipe itself during cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0022] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure in the middle.

[0023] Among them: 1. Upper mold structure; 11. Upper mold; 12. Heat dissipation chamber; 13. Needle valve hot runner; 14. Feed port; 15. Ventilation hole; 16. Positioning through hole; 17. Gate; 2. Lower mold structure; 21. Lower mold; 22. Injection chamber; 23. Water cooling chamber; 24. Bottom plate; 25. Positioning ring; 3. Air cooling assembly; 31. Drive motor; 32. Active shaft; 33. Driven shaft; 34. Drive belt; 35. Heat dissipation fan; 4. Water cooling assembly; 41. Coolant tank; 42. Liquid inlet; 43. Water pump; 44. Coolant pipe. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-3The utility model provides the following technical solutions: a stable and reliable needle valve hot runner mold, including an upper mold structure 1 and a lower mold structure 2, the upper mold structure 1 includes an upper mold 11, a heat dissipation chamber 12 is provided in the upper mold 11, a needle valve hot runner 13 is fixedly provided through the upper mold 11, a feed port 14 is provided at the top of the needle valve hot runner 13, an air cooling component 3 is provided in the upper mold 11, the lower mold structure 2 includes a lower mold 21, an injection chamber 22 is provided at the top of the lower mold 21, a water cooling chamber 23 is provided in the lower mold 21, a bottom plate 24 is fixedly provided at the bottom of the lower mold 21, and a water cooling component 4 is provided in the lower mold 21;

[0026] The air cooling component 3 includes a driving motor 31 fixedly connected to the top of the upper mold 11. The shaft of the driving motor 31 passes through the upper mold 11 and is connected to a driving shaft 32 in the heat dissipation bin 12. A driven shaft 33 is rotatably arranged on the top wall of the heat dissipation bin 12. The driven shaft 33 is connected to the driving shaft 32 through a transmission belt 34. Cooling fans 35 are fixedly arranged at the bottom ends of the driving shaft 32 and the driven shaft 33.

[0027] Through the above technical scheme, by setting up the air cooling component 3 and the water cooling component 4, when the product in the injection molding bin 22 needs to be quickly cooled after the injection molding is completed, the driving motor 31 and the water pump 43 can be started, and the driving motor 31 drives the active shaft 32 to rotate, and the active shaft 32 drives the driven shaft 33 to rotate synchronously through the transmission belt 34, so that the two cooling fans 35 start to rotate, and the cooling fan 35 performs air cooling on the injection molded product. At the same time, the water pump 43 draws coolant from the coolant tank 41 into the coolant pipe 44, and the coolant flows in the water cooling bin 23 to perform water cooling on the injection molded product. The combination of the two cooling methods promotes the rapid cooling of the injection molded product, thereby improving the processing efficiency.

[0028] Specifically, the water cooling assembly 4 includes a coolant tank 41 fixedly connected to the top of the base plate 24, a liquid inlet 42 is connected to the top of the coolant tank 41, the outer side of the coolant tank 41 is connected to both ends of a coolant pipe 44, a water pump 43 is fixedly provided on the outer side of one end of the coolant pipe 44, and the coolant pipe 44 passes through the lower mold 21 and is arranged in a curved shape in the water cooling chamber 23.

[0029] Through the above technical solution, by setting up the water cooling component 4, the water pump 43 can be started, and the water pump 43 will pump the coolant into the coolant pipe 44, and then the product in the injection molding chamber 22 is cooled in the water cooling chamber 23, and the coolant finally circulates back to the coolant tank 41.

[0030] Specifically, two ventilation holes 15 are provided on the top of the upper mold 11 .

[0031] Through the above technical solution, by providing the ventilation holes 15 , it can cooperate with the air cooling component 3 to ensure the air circulation in the heat dissipation chamber 12 .

[0032] Specifically, two positioning rings 25 are fixedly provided on the inner wall of the water cooling bin 23 , and both positioning rings 25 penetrate and are positionedly connected with the coolant pipe 44 .

[0033] Through the above technical solution, by setting the positioning ring 25, the part of the coolant pipe 44 in the water cooling bin 23 can be fixed and positioned to avoid falling and bumping. By setting the positioning ring 25, the coolant pipe 44 in the water cooling bin 23 can be positioned, ensuring the position stability of the coolant pipe 44 itself during cooling work.

[0034] Specifically, four positioning through holes 16 are provided at corresponding positions on the outer sides of the upper mold 11 and the lower mold 21 .

[0035] Through the above technical solution, by providing the positioning through hole 16, the upper mold 11 and the lower mold 21 can be fixedly connected by fixing bolts, thereby ensuring stability during injection molding.

[0036] Specifically, the bottom end of the needle valve hot runner 13 is connected to a gate 17 , and the gate 17 passes through the bottom plate of the upper mold 11 .

[0037] Through the above technical solution, by setting the gate 17, it is possible to ensure that the injection material can accurately enter the injection chamber 22 after the upper mold 11 and the lower mold 21 are fixedly connected.

[0038] When in use, the upper mold 11 and the lower mold 21 are fixedly connected through the positioning through hole 16, and the injection material is poured into the needle valve hot runner 13 through the feed port 14, and then enters the injection molding chamber 22 through the gate 17 for injection molding. After the injection molding is completed, when it is necessary to quickly cool the product in the injection molding chamber 22, the drive motor 31 and the water pump 43 can be started. The drive motor 31 drives the active shaft 32 to rotate, and the active shaft 32 drives the driven shaft 33 to rotate synchronously through the transmission belt 34, so that the two cooling fans 35 start to rotate, and the cooling fan 35 performs air cooling on the injection molded product. At the same time, the water pump 43 draws coolant from the coolant tank 41 into the coolant pipe 44, and flows in the water cooling chamber 23 to perform water cooling on the injection molded product.

[0039] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stable and reliable needle valve hot runner mold, comprising an upper mold structure (1) and a lower mold structure (2), characterized in that: The upper mold structure (1) comprises an upper mold (11), a heat dissipation chamber (12) is provided in the upper mold (11), a needle valve hot runner (13) is fixedly provided through the upper mold (11), a feed port (14) is provided at the top of the needle valve hot runner (13), an air cooling component (3) is provided in the upper mold (11), and the lower mold structure (2) comprises a lower mold (21), an injection chamber (22) is provided at the top of the lower mold (21), a water cooling chamber (23) is provided in the lower mold (21), a bottom plate (24) is fixedly provided at the bottom of the lower mold (21), and a water cooling component (4) is provided in the lower mold (21); The air cooling component (3) comprises a driving motor (31) fixedly connected to the top of the upper mold (11); the shaft of the driving motor (31) passes through the upper mold (11) and is connected to a driving shaft (32) in the heat dissipation bin (12); a driven shaft (33) is rotatably arranged on the top wall of the heat dissipation bin (12); the driven shaft (33) is connected to the driving shaft (32) via a transmission belt (34); and cooling fans (35) are fixedly arranged at the bottom ends of the driving shaft (32) and the driven shaft (33).

2. A stable and reliable needle valve hot runner mold according to claim 1, characterized in that: The water cooling assembly (4) comprises a coolant tank (41) fixedly connected to the top of the base plate (24); a liquid inlet (42) is arranged at the top of the coolant tank (41); the outer side of the coolant tank (41) is connected to both ends of a coolant pipe (44); a water pump (43) is fixedly arranged on the outer side of one end of the coolant pipe (44); the coolant pipe (44) passes through the lower mold (21) and is arranged in a curved shape in the water cooling chamber (23).

3. A stable and reliable needle valve hot runner mold according to claim 1, characterized in that: Two ventilation holes (15) are provided on the top of the upper mold (11).

4. A stable and reliable needle valve hot runner mold according to claim 2, characterized in that: Two positioning rings (25) are fixedly arranged on the inner wall of the water cooling bin (23), and both positioning rings (25) are penetrated and positionedly connected with the cooling liquid pipe (44).

5. A stable and reliable needle valve hot runner mold according to claim 1, characterized in that: Four positioning through holes (16) are provided at corresponding positions on the outer sides of the upper mold (11) and the lower mold (21).

6. A stable and reliable needle valve hot runner mold according to claim 1, characterized in that: The bottom end of the needle valve hot runner (13) is connected to a gate (17), and the gate (17) passes through the bottom plate of the upper mold (11).

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