Hot runner nozzle and hot runner

Abstract

The utility model provides a hot runner injection nozzle and a hot runner, and relates to the technical field of hot runners. The hot runner injection nozzle comprises an injection nozzle structure and a cooling structure provided with a cooling liquid channel, and the cooling liquid channel is arranged around the outer side of the injection nozzle structure and used for transmitting cooling liquid to reduce the temperature of the injection nozzle structure when the injection nozzle structure dissipates heat. According to the injection nozzle structure, the cooling liquid capable of rapidly absorbing heat can be conveyed through the cooling liquid channel surrounding the injection nozzle structure, the cooling efficiency and the cooling effect of the injection nozzle structure are effectively improved, and the influence of the injection nozzle structure on the product quality and the defective product rate of products are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of hot runners, and in particular to a hot runner nozzle and a hot runner. Background Art

[0002] Hot runner is a heating component system used in injection molds to inject melted plastic particles into the mold cavity. In the hot runner injection process, the melted plastic particles are injected into the cavity through the nozzle structure to obtain the product. Therefore, the nozzle structure has a very high temperature, and it is necessary to quickly cool it down after the plastic particles are injected to reduce its impact on the product.

[0003] In the prior art, the temperature of the nozzle structure is lowered by air heat dissipation. This method has slow heat dissipation and poor cooling effect. In addition, the nozzle structure that fails to effectively cool down is likely to cause the bottom of the product to turn yellow or white, thereby increasing the defective rate of the product. Utility Model Content

[0004] The present application provides a hot runner nozzle and a hot runner, which can solve the problem that the existing nozzle structure has slow heat dissipation, poor cooling effect, and affects product quality and defective product rate. To achieve this purpose, the present application provides the following solutions.

[0005] According to one aspect of an embodiment of the present application, a hot runner nozzle is provided, comprising: a nozzle structure and a cooling structure provided with a coolant channel, wherein the coolant channel is arranged around the outer side of the nozzle structure and is used to transmit coolant to reduce the temperature of the nozzle structure when the nozzle structure dissipates heat.

[0006] In a possible implementation, the coolant channel includes a first channel and a second channel, and the first channel and the second channel are arranged in layers on the outside of the nozzle structure.

[0007] In a possible implementation, it further includes a first structural member and a second structural member, wherein the first structural member and the second structural member cover the nozzle structure, and the opening of the first channel is arranged on the side wall of the first structural member, and the opening of the second channel is arranged on the side wall of the second structural member.

[0008] In a possible implementation, the first structural member is located on a side of the second structural member close to the hot runner nozzle opening, and the first channel is disposed inside the first structural member.

[0009] In a possible implementation, at least one exhaust groove is provided on a side of the second structural member where the first structural member is disposed, and the exhaust groove is located on the outer side of the first structural member.

[0010] In a possible implementation, a height of the second structural member corresponds to a height of the second channel, the second channel is located inside the second structural member, and an opening of the second channel on the second structural member is staggered with an opening of the first channel on the first structural member.

[0011] In a possible implementation, the hot runner nozzle further includes a third structural member, the third structural member is located on a side of the second structural member away from the first structural member, and the third structural member is provided with a fixing hole for fixing the hot runner nozzle.

[0012] In a possible implementation, the coolant channel is further provided with a coolant inlet and a coolant outlet, and the coolant inlet and the coolant outlet extend to a side of the third structural component away from the first structural component.

[0013] In a possible implementation, the first structural member is rectangular, the first channel includes an annular channel and a branch channel, the annular channel surrounds the nozzle structure, one end of the branch channel is connected to the annular channel, and the opening of the other end is arranged on the side wall of the rectangle.

[0014] Based on the same inventive concept, a hot runner is also proposed, which includes the hot runner nozzle as described above.

[0015] The beneficial effects of the technical solution provided by the embodiment of the present application are:

[0016] The hot runner nozzle provided in the present application includes a nozzle structure and a cooling structure provided with a coolant channel, wherein the coolant channel is arranged around the outer side of the nozzle structure, and the coolant is transmitted when the nozzle structure dissipates heat to reduce the temperature of the nozzle structure. The embodiment of the present application can transmit the coolant that absorbs heat quickly through the coolant channel surrounding the nozzle structure, effectively improve the cooling efficiency and cooling effect of the nozzle structure, and reduce the influence of the nozzle structure on the product quality and the defective rate of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in describing the embodiments of the present application.

[0018] Figure 1 A cross-sectional view of a hot runner nozzle provided in an embodiment of the present application;

[0019] Figure 2 A top view of a hot runner nozzle provided in an embodiment of the present application;

[0020] Figure 3 A side view of a hot runner nozzle provided in an embodiment of the present application;

[0021] Figure 4 A cross-sectional view of a plane where a first channel in a hot runner nozzle provided in an embodiment of the present application is located;

[0022] Figure 5 A cross-sectional view of the layer where the second channel is located in the hot runner nozzle provided in an embodiment of the present application;

[0023] Figure 6 A cross-sectional view formed based on the sectioning of a coolant inlet provided in an embodiment of the present application.

[0024] Description of reference numerals: 1. Nozzle structure; 2. Coolant channel; 21. First channel; 22. Second channel; 23. Coolant inlet; 24. Coolant outlet;

[0025] 31. First structural member; 32. Second structural member; 321. Exhaust groove; 33. Third structural member; 331. Fixing hole. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described below in conjunction with the drawings in the present application. It should be understood that the implementation methods described below in conjunction with the drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0027] It will be understood by those skilled in the art that, unless specifically stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the terms "including" and "comprising" used in the embodiments of the present application refer to that the corresponding features can be implemented as the presented features, information, data, steps, operations, elements and / or components, but do not exclude the implementation of other features, information, data, steps, operations, elements, components and / or combinations thereof supported by the present technical field. It should be understood that when we say that an element is "connected" or "coupled" to another element, the one element may be directly connected or coupled to the other element, or it may refer to that the one element and the other element establish a connection relationship through an intermediate element. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein indicates at least one of the items defined by the term, for example, "A and / or B" indicates that it is implemented as "A", or is implemented as "A", or is implemented as "A and B".

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clear, the implementation methods of the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] The following describes several exemplary embodiments to illustrate the technical solutions of the embodiments of the utility model and the technical effects produced by the technical solutions of the utility model. It should be noted that the following embodiments can refer to, draw on or combine with each other, and the same terms, similar features and similar implementation steps in different embodiments will not be described repeatedly.

[0030] The hot runner nozzle and hot runner provided in the present application are intended to solve at least one technical problem existing in the prior art.

[0031] In the embodiment of the present application, a hot runner nozzle is provided, such as Figure 1-Figure 6 As shown, the hot runner nozzle includes a nozzle structure 1 and a cooling structure provided with a coolant channel 2. The coolant channel 2 is arranged around the outer side of the nozzle structure 1 and is used to transmit coolant to reduce the temperature of the nozzle structure 1 when the nozzle structure 1 dissipates heat.

[0032] Optionally, the coolant in the coolant channel 2 may be water, alcohol, glycerin, ethylene glycol, or other coolants that can be used for cooling the nozzle structure 1 .

[0033] Optionally, the coolant channel 2 includes a first channel 21 and a second channel 22 , and the first channel 21 and the second channel 22 are layered and arranged outside the nozzle structure 1 .

[0034] Optionally, the nozzle structure 1 may include a first part, a second part and a third part with successively larger volumes, the two sides of the second part are respectively connected to the first part and the third part, and the melted plastic is injected into the mold cavity along the first part.

[0035] Optionally, the first channel 21 and the second channel 22 are arranged around the second portion, and the relative heights of the first channel 21 and the second channel 22 to the first portion are different.

[0036] Optionally, the hot runner nozzle further includes a first structural member 31 and a second structural member 32, the first structural member 31 and the second structural member 32 cover the nozzle structure 1, and the opening of the first channel 21 is provided on the side wall of the first structural member 31, and the opening of the second channel 22 is provided on the side wall of the second structural member 32. The opening positions on the first channel 21 and the second channel 22 correspond to the structure of the mold, and the coolant is introduced into the mold through the opening to cool the mold.

[0037] Optionally, the first structural member 31 is rectangular, and the first channel 21 includes an annular channel and a branch channel. The annular channel surrounds the nozzle structure 1, one end of the branch channel is connected to the annular channel, and the opening of the other end is arranged on the side wall of the rectangle.

[0038] In one embodiment, the cross section of the first structural member 31 is rectangular, the cross section of the second structural member 32 is circular, and the cross-sectional area of ​​the first structural member 31 is smaller than the cross-sectional area of ​​the second structural member 32. There are four branch channels, which are located in the same horizontal plane, and each branch channel corresponds to a corner of the rectangle, and the branch channel is provided with two openings, which are located at different corners of the corresponding corner of the branch channel.

[0039] Optionally, the second channel 22 is formed in a rectangular shape, each channel in the second channel 22 serves as a side of the rectangle, two intersecting channels are connected, and both ends of each channel extend to the side wall of the second structural member 32 to form an opening on the side wall.

[0040] Optionally, the first structural member 31 is located on a side of the second structural member 32 close to the hot runner nozzle opening, and the first channel 21 is disposed inside the first structural member 31. The second structural member 32 is provided with at least one exhaust groove 321 on a side of the first structural member 31, and the exhaust groove 321 is located outside the first structural member 31.

[0041] In one embodiment, the contact side of the first structural member 31 and the second structural member 32 is rectangular. There are four exhaust grooves 321, one end of each exhaust groove 321 is opposite to a corner of the rectangle, and the other end extends to the side of the second structural member 32. When manufacturing products, the exhaust grooves 321 are used to exhaust the air in the mold cavity, reduce the interference of the air in the cavity on the product molding, and improve the molding speed and quality of the product.

[0042] Optionally, to improve the cooling effect, the height of the second structural member 32 corresponds to the height of the second channel 22 , the second channel 22 is located inside the second structural member 32 , and the opening of the second channel 22 on the second structural member 32 is staggered with the opening of the first channel 21 on the first structural member 31 .

[0043] In one embodiment, the cross section of the first structural member 31 is a rectangle, the opening of the first channel 21 is a side surface of the rectangle, and the opening of the second channel 22 corresponds to the position of the corner of the rectangle.

[0044] Optionally, the hot runner nozzle further includes a third structural member 33 , which is located on a side of the second structural member 32 away from the first structural member 31 , and a fixing hole 331 for fixing the hot runner nozzle is provided on the third structural member 33 .

[0045] Optionally, the fixing hole 331 may be a screw hole, a slot, or other hole position that can be used to fix the hot runner nozzle.

[0046] In one embodiment, the cross section of the third structural member 33 is circular, the second structural member 32 is fixed to the third structural member 33 , and the fixing hole 331 is a screw hole that passes through the third structural member 33 , wherein the number of the screw holes is four.

[0047] Optionally, the first structural member 31, the second structural member 32 and the third structural member 33 can be formed by 3D printing, or the first structural member 31, the second structural member 32 and the third structural member 33 can be manufactured separately and fixed together by welding or other fixing methods to form a hot runner nozzle.

[0048] Optionally, the coolant channel 2 is further provided with a coolant inlet 23 and a coolant outlet 24, and the coolant inlet 23 and the coolant outlet 24 extend to the side of the third structural member 33 away from the first structural member 31. The coolant is poured into the coolant channel 2 through the coolant inlet 23, and the coolant after absorbing heat is discharged from the coolant channel 2 through the coolant outlet 24.

[0049] Optionally, the first channel 21 and the second channel 22 are provided with different coolant inlets 23 and coolant outlets 24 .

[0050] In one embodiment, the cross-section of the first structural member 31 is a rectangle, wherein the positions of the channel where the coolant inlet 23 of the first channel 21 is located and the channel where the coolant outlet 24 is located correspond to one corner of the rectangle, and the positions of the channel where the coolant inlet 23 of the second channel 22 is located and the channel where the coolant outlet 24 is located correspond to the other corner of the rectangle.

[0051] The hot runner nozzle of the present application includes a nozzle structure 1 and a cooling structure provided with a coolant channel 2, wherein the coolant channel 2 is arranged around the outer side of the nozzle structure 1, so as to transmit the coolant when the nozzle structure 1 dissipates heat to reduce the temperature of the nozzle structure 1. The embodiment of the present application can transmit the coolant that absorbs heat quickly through the coolant channel 2 surrounding the nozzle structure 1, thereby effectively improving the cooling efficiency and cooling effect of the nozzle structure 1, and reducing the influence of the nozzle structure 1 on the product quality and the defective rate of the product.

[0052] Based on the same inventive concept, the present application also provides a hot runner, which includes a hot runner nozzle, wherein the hot runner nozzle includes a nozzle structure and a cooling structure provided with a coolant channel, and the coolant channel is arranged around the outer side of the nozzle structure, and is used to transmit coolant to reduce the temperature of the nozzle structure when the nozzle structure dissipates heat.

[0053] Optionally, the coolant channel includes a first channel and a second channel, and the first channel and the second channel are layered and arranged outside the nozzle structure.

[0054] Optionally, it further comprises a first structural member and a second structural member, the first structural member and the second structural member cover the nozzle structure, the opening of the first channel is arranged on the side wall of the first structural member, and the opening of the second channel is arranged on the side wall of the second structural member.

[0055] Optionally, the first structural member is located on a side of the second structural member close to the hot runner nozzle opening, and the first channel is arranged inside the first structural member.

[0056] Optionally, at least one exhaust groove is provided on one side of the second structural member where the first structural member is arranged, and the exhaust groove is located outside the first structural member.

[0057] Optionally, the height of the second structural member corresponds to the height of the second channel, the second channel is located inside the second structural member, and an opening of the second channel on the second structural member is staggered with an opening of the first channel on the first structural member.

[0058] Optionally, the hot runner nozzle further comprises a third structural member, the third structural member is located on a side of the second structural member away from the first structural member, and the third structural member is provided with a fixing hole for fixing the hot runner nozzle.

[0059] Optionally, the coolant channel is further provided with a coolant inlet and a coolant outlet, and the coolant inlet and the coolant outlet extend to a side of the third structural component away from the first structural component.

[0060] Optionally, the first structural member is rectangular, and the first channel includes an annular channel and a branch channel, the annular channel surrounds the nozzle structure, one end of the branch channel is connected to the annular channel, and the opening of the other end is arranged on the side wall of the rectangle.

[0061] The terms "first", "second", "third", "fourth", "1", "2", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that shown or described in the drawings.

[0062] It should be understood that, although each operation step is indicated by arrows in the flowchart of the embodiment of the present application, the implementation order of these steps is not limited to the order indicated by the arrows. Unless clearly stated herein, in some implementation scenarios of the embodiment of the present application, the implementation steps in each flowchart can be performed in other orders according to demand. In addition, some or all of the steps in each flowchart may include multiple sub-steps or multiple stages based on actual implementation scenarios. Some or all of these sub-steps or stages may be executed at the same time, and each sub-step or stage in these sub-steps or stages may also be executed at different times respectively. In different scenarios of execution time, the execution order of these sub-steps or stages may be flexibly configured according to demand, and the embodiment of the present application does not limit this.

[0063] The above is only an optional implementation method for some implementation scenarios of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the technical concept of the solution of the present application, other similar implementation methods based on the technical ideas of the present application are also within the protection scope of the embodiments of the present application.

Claims

1. A hot runner nozzle, characterized in that: include: A nozzle structure and a cooling structure provided with a coolant channel, wherein the coolant channel is arranged around the outer side of the nozzle structure and is used to transmit coolant to reduce the temperature of the nozzle structure when the nozzle structure dissipates heat.

2. The hot runner nozzle according to claim 1, characterized in that: The coolant channel includes a first channel and a second channel, and the first channel and the second channel are layered and arranged outside the nozzle structure.

3. The hot runner nozzle according to claim 2, characterized in that: It also includes a first structural member and a second structural member, wherein the first structural member and the second structural member cover the nozzle structure, and the opening of the first channel is arranged on the side wall of the first structural member, and the opening of the second channel is arranged on the side wall of the second structural member.

4. The hot runner nozzle according to claim 3, characterized in that: The first structural member is located on a side of the second structural member close to the hot runner nozzle opening, and the first channel is arranged inside the first structural member.

5. The hot runner nozzle according to claim 3, characterized in that: A side of the second structural member where the first structural member is disposed is provided with at least one exhaust groove, and the exhaust groove is located outside the first structural member.

6. The hot runner nozzle according to claim 3, characterized in that: The height of the second structural member corresponds to the height of the second channel, the second channel is located inside the second structural member, and an opening of the second channel on the second structural member is staggered with an opening of the first channel on the first structural member.

7. The hot runner nozzle according to claim 3, characterized in that: The hot runner nozzle further includes a third structural member, the third structural member is located on a side of the second structural member away from the first structural member, and the third structural member is provided with a fixing hole for fixing the hot runner nozzle.

8. The hot runner nozzle according to claim 7, characterized in that: The coolant channel is further provided with a coolant inlet and a coolant outlet, and the coolant inlet and the coolant outlet extend to a side of the third structural member away from the first structural member.

9. The hot runner nozzle according to claim 3, characterized in that: The first structural member is rectangular, and the first channel includes an annular channel and a branch channel. The annular channel surrounds the nozzle structure, one end of the branch channel is connected to the annular channel, and the opening of the other end is arranged on the side wall of the rectangle.

10. A hot runner, characterized in that: The hot runner comprises the hot runner nozzle as described in any one of claims 1-9.

Images