Improved hot runner nozzle structure

Abstract

The utility model discloses a kind of improved hot runner nozzle structure, comprising: nozzle body, rear end runner is formed in the nozzle body, front end runner is provided on the nozzle body, and the front end runner is connected with rear end runner to constitute nozzle hot runner;And detachably installed on the nozzle body and surrounded on the outer peripheral surface of the front end runner on cap. The utility model utilizes cap to cover front end runner, play the role of heat preservation, reduce heat loss, simultaneously due to canceling nozzle core, so that mouth head diameter can be reduced, reduce space requirement, suitable for smaller product space.

Description

Technical Field

[0001] This utility model relates to the field of hot runner nozzle technology, and in particular to an improved hot runner nozzle structure. Background Technology

[0002] Hot runner nozzles are key components in injection molds. Their function is to transport molten plastic from the hot runner system to the mold cavity and maintain the plastic in a molten state throughout the process, minimizing temperature and pressure loss, preventing condensation and blockage, and ensuring that the injection-molded product achieves the best appearance and dimensions.

[0003] See Figure 1 The figure shows a standard hot runner nozzle structure. A hot runner 12a is formed inside the nozzle tip 11a of the nozzle 10a. The hot runner 12a is located between the nozzle core 13a and the insulation body 14a. Due to the nozzle core 13a and the insulation body 14a, the nozzle tip diameter D1 can usually only be set to 10mm~14mm. Although this structure can reduce heat loss, it is difficult to adapt to small product spaces.

[0004] See Figure 2 The figure shows another existing standard hot runner nozzle structure. A hot runner 12b is formed inside the nozzle tip 11b of the nozzle 10b. The hot runner 12b is located on the outer periphery of the nozzle core 13a and is not covered by insulation. Therefore, its nozzle tip diameter D2 can be set to about 5mm~8mm, which can meet the needs of smaller product spaces. However, due to the large temperature loss in the junction area, it is difficult to adapt to the injection molding of special high-temperature plastic materials, which affects the injection molding effect.

[0005] Therefore, through beneficial exploration and research, the applicant has found a solution to the above problems, and the technical solution to be introduced below is the result of this research. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide an improved hot runner nozzle structure that can both ensure nozzle temperature and reduce space requirements, in order to address the shortcomings of the existing technology.

[0007] The technical problem to be solved by this utility model can be achieved by the following technical solution: An improved hot runner nozzle structure includes: A nozzle body, wherein a rear flow channel is formed within the nozzle body, and a front flow channel is provided on the nozzle body, the front flow channel and the rear flow channel being connected to form a nozzle hot flow channel; and A nozzle cap that is detachably mounted on the nozzle body and surrounds the outer peripheral surface of the front flow channel.

[0008] In a preferred embodiment of this utility model, the nozzle cap includes a first circular portion, a second circular portion, a frustum portion, and a third circular portion arranged sequentially along the discharge direction. The diameter of the first circular portion is approximately equal to the diameter of the nozzle body. The diameter of the second circular portion is smaller than the diameter of the first circular portion. The diameter of the upper bottom surface of the frustum portion is smaller than the diameter of the second circular portion but larger than the diameter of its lower bottom surface. The diameter of the third circular portion is approximately equal to the diameter of the lower bottom surface of the frustum portion.

[0009] In a preferred embodiment of the present invention, the nozzle cap is provided with an adaptation through hole that matches the shape of the outer peripheral surface of the front flow channel, and the adaptation through hole axially penetrates the first disc portion, the second disc portion, the frustum portion and the third disc portion.

[0010] In a preferred embodiment of this utility model, the diameter of the third disc portion is 5mm to 8mm.

[0011] In a preferred embodiment of this utility model, the nozzle cap and the nozzle body are connected by a thread.

[0012] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: This utility model uses the nozzle cap to cover the front flow channel, which plays a role in heat preservation and reduces heat loss. At the same time, since the nozzle core is eliminated, the nozzle diameter can be reduced, reducing the space requirement and making it suitable for smaller product spaces. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of one embodiment of a standard hot runner nozzle structure.

[0015] Figure 2 This is a schematic diagram of another embodiment of the existing standard hot runner nozzle structure.

[0016] Figure 3 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0018] See Figure 3 The figure shows an improved hot runner nozzle structure, including a nozzle body 100 and a nozzle cap 200.

[0019] A rear flow channel 110 is formed inside the nozzle body 100, and a front flow channel 120 is provided on the nozzle body 110. The front flow channel 120 and the rear flow channel 110 are connected to form a nozzle hot flow channel.

[0020] The nozzle cap 200 is detachably mounted on the nozzle body 100 via a threaded connection or other means and surrounds the outer peripheral surface of the front flow channel 120. This invention utilizes the nozzle cap 200 to cover the front flow channel 120, thereby providing insulation and reducing heat loss.

[0021] The nozzle cap 200 includes a first disc portion 210, a second disc portion 220, a frustum portion 230, and a third disc portion 240 arranged sequentially along the discharge direction. The diameter of the first disc portion 210 is approximately equal to the diameter of the nozzle body 100. The diameter of the second disc portion 220 is smaller than the diameter of the first disc portion 210. The diameter of the upper bottom surface of the frustum portion 230 is smaller than the diameter of the second disc portion 220 but larger than the diameter of its lower bottom surface. The diameter of the third disc portion 240 is approximately equal to the diameter of the lower bottom surface of the frustum portion 230.

[0022] The nozzle cap 200 has an adaptation through hole 201 that matches the shape of the outer peripheral surface of the front flow channel 120. The adaptation through hole 201 axially penetrates the first disc portion 210, the second disc portion 220, the frustum portion 230 and the third disc portion 240.

[0023] Since the nozzle core is eliminated, the diameter D (nozzle diameter) of the third disc part 240 can be reduced to 5mm~8mm, thereby reducing the space requirement and making it suitable for smaller product spaces.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An improved hot runner nozzle structure, characterized in that, include: A nozzle body, wherein a rear flow channel is formed within the nozzle body, and a front flow channel is provided on the nozzle body, the front flow channel and the rear flow channel being connected to form a nozzle hot flow channel; and A nozzle cap that is detachably mounted on the nozzle body and surrounds the outer peripheral surface of the front flow channel.

2. The improved hot runner nozzle structure as described in claim 1, characterized in that, The nozzle cap includes a first circular portion, a second circular portion, a frustum portion, and a third circular portion arranged sequentially along the discharge direction. The diameter of the first circular portion is approximately equal to the diameter of the nozzle body. The diameter of the second circular portion is smaller than the diameter of the first circular portion. The diameter of the upper bottom surface of the frustum portion is smaller than the diameter of the second circular portion but larger than the diameter of its lower bottom surface. The diameter of the third circular portion is approximately equal to the diameter of the lower bottom surface of the frustum portion.

3. The improved hot runner nozzle structure as described in claim 2, characterized in that, The nozzle cap has an adaptation through hole that matches the shape of the outer peripheral surface of the front flow channel. The adaptation through hole axially penetrates the first disc portion, the second disc portion, the frustum portion, and the third disc portion.

4. The improved hot runner nozzle structure as described in claim 2, characterized in that, The diameter of the third disc portion is 5mm to 8mm.

5. The improved hot runner nozzle structure as described in any one of claims 1 to 4, characterized in that, The nozzle cap is connected to the nozzle body by a thread.

Images