Fusion components and hot nozzles for hot nozzles

Abstract

The present invention provides a fusion piece for a hot nozzle and a hot nozzle. The fusion piece includes a flow channel and a baffle disposed within the flow channel. A liquid inlet and a liquid outlet are formed at the upper and lower ends of the flow channel, respectively. The lower end of the baffle is deflected outward, and the inner wall of the flow channel adjacent to the baffle is eccentrically disposed outwardly in the direction of the baffle's deflection. The baffle is disposed within the flow channel to divide resin entering the flow channel into two, thereby dispersing any deteriorated resin clumps within the flow channel and preventing these clumps from affecting the product's appearance.

Description

Technical Field

[0001] The present invention relates to the technical field of hot runner injection molding, and in particular to a fusion component for a hot nozzle and the hot nozzle. Background Art

[0002] Resin is injected into the mold cavity through the runner to form the product. When the resin stays in the hot runner for too long, especially the resin on the outside of the runner (close to the inner wall of the runner), it may deteriorate and turn yellow and black. Such resin will be peeled off from the inner wall of the runner under the impact of the flowing resin and injected into the cavity along the runner along with the flowing resin. The deteriorated resin will accumulate regularly, and eventually defects such as black lines and black spots may appear on the surface of the molded product. Summary of the Invention

[0003] The object of the present invention is to provide a fusion piece for a hot nozzle, in which a baffle biased toward the outside is provided in the flow channel formed therein, and the inner wall of the flow channel is also biased along with the baffle, so that the baffle divides the flow channel into two, breaks up and dilutes the deteriorated resin peeled off from the inner wall of the flow channel, and solves the problem in the prior art that the deteriorated resin accumulated on the inner wall of the flow channel enters the mold cavity and affects the appearance of the product.

[0004] In order to achieve one of the above-mentioned objectives of the invention, one embodiment of the present invention provides a fusion component for a hot nozzle, comprising:

[0005] The flow channel has a liquid inlet and a liquid outlet formed at the upper and lower ends respectively;

[0006] A baffle is arranged in the flow channel, the lower end of the baffle is deflected outward, and the inner wall of the flow channel close to the baffle is eccentrically arranged outward along the deflection direction of the baffle.

[0007] As a further improvement of an embodiment of the present invention, the baffle separates the flow channel into a main flow channel and an eccentric flow channel arranged eccentrically outward.

[0008] As a further improvement of one embodiment of the present invention, the lower end of the eccentric flow channel extends inwardly and communicates with the main flow channel, so that the fluid in the eccentric flow channel converges into the main flow channel.

[0009] As a further improvement of an embodiment of the present invention, the blocking pieces are provided with at least two pieces, which are arranged in sequence from top to bottom.

[0010] As a further improvement of an embodiment of the present invention, among at least two of the blocking pieces, the deflection directions of the lower ends of two adjacent blocking pieces are opposite.

[0011] As a further improvement of an embodiment of the present invention, of two adjacent blocking pieces, the top of the lower blocking piece is lower than the bottom of the upper blocking piece.

[0012] As a further improvement of an embodiment of the present invention, of the two adjacent baffles, the top end of the lower baffle is located on the side of the eccentric flow channel formed by the upper baffle away from the deflection direction of the upper baffle.

[0013] As a further improvement of one embodiment of the present invention, the outer periphery of the cross section of the merging piece is circular, the liquid inlet and the liquid outlet are also circular, and the liquid inlet, the liquid outlet and the outer periphery of the merging piece are coaxially arranged.

[0014] As a further improvement of one embodiment of the present invention, the surface where the axis of the liquid inlet, liquid outlet and the outer periphery of the fusion piece is located is used as the dividing interface, and the lower ends of two adjacent baffles are respectively deflected toward both sides of the dividing interface and are arranged on both sides of the dividing interface.

[0015] One embodiment of the present invention further provides a hot nozzle, comprising a hot nozzle body, a nozzle tip connected to one end of the hot nozzle body, and a fusion piece arranged in the hot nozzle body and connected to the nozzle tip, wherein the fusion piece is the fusion piece described above.

[0016] One or more technical solutions provided by the present invention have at least the following technical effects or advantages:

[0017] The flow channel provided in the fusion piece provided by the present invention is provided with a baffle, which is arranged to be biased outward, and the inner wall of the flow channel is extended along the biased direction of the baffle, so that the baffle divides the flow channel into two. The fluid in the flow channel is separated and then merged under the isolation of the baffle, so that the accumulated deteriorated resin peeled off from the inner wall of the flow channel is broken up and diluted, thereby improving the poor appearance caused by the deteriorated resin clumping into a mass and being injected into the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of the hot nozzle in an embodiment of the present invention.

[0019] Figure 2 yes Figure 1 Schematic cross-sectional view along line AA.

[0020] Figure 3 It is a structural diagram of the integration component in an embodiment of the present invention.

[0021] Figure 4 yes Figure 3 Schematic cross-sectional view along line BB.

[0022] 10. Fusion piece; 20. Hot nozzle body; 30. Nozzle tip; 40. Pressing cap; 1. Flow channel; 11. Liquid inlet; 12. Liquid outlet; 131. First main flow channel; 132. First eccentric flow channel; 141. Second main flow channel; 142. Second eccentric flow channel; 21. First baffle; 22. Second baffle. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] As used herein, terms such as "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" that indicate spatial relative positions are used for ease of explanation to describe the relationship of one element or feature relative to another element or feature as shown in the accompanying drawings. Spatially relative terms may be intended to encompass different orientations of the device in use or operation other than the orientation shown in the drawings.

[0025] For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0027] Furthermore, it should be understood that although the terms "first," "second," etc. may be used herein to describe various elements or structures, these described objects should not be limited by these terms. These terms are merely used to distinguish these described objects from one another. For example, a first baffle may be referred to as a second baffle, and similarly, a second baffle may be referred to as a first baffle, without departing from the scope of protection of this application.

[0028] The embodiment of the present invention provides a fusion member 10 for a hot nozzle, wherein Figure 1 、 2As shown, the hot nozzle includes a hot nozzle body 20, a nozzle tip 30 connected to one end of the hot nozzle body 20, and a fusion piece 10 disposed in the hot nozzle body 20 and connected to the nozzle tip 30. The nozzle tip 30 is connected to the hot nozzle body 20 via a pressure cap 40. Therefore, an embodiment of the present invention also provides a hot nozzle provided with the aforementioned fusion piece 10.

[0029] like Figure 3 、 4 As shown, the aforementioned fusion element 10 comprises a flow channel 1 and a baffle disposed within the flow channel 1. A liquid inlet 11 and a liquid outlet 12 are formed at the upper and lower ends of the flow channel 1, respectively. The lower end of the baffle is deflected outward, and the inner wall of the flow channel 1 near the baffle is eccentrically positioned outward in the direction of the baffle's deflection. In this embodiment, "outside" is relative to "inside," with the center of the flow channel 1 being considered "inside" and the area extending from the center of the flow channel 1 being considered "outside."

[0030] The lower end of the baffle is deflected outward. To make room for resin flowing toward the deflected side of the baffle, the inner wall of the baffle on the deflected side is also extended outward in the direction of the baffle's deflection, resulting in an eccentric flow channel 1. That is, the baffle divides flow channel 1 into a main flow channel and an eccentric flow channel on the side of the baffle's deflection. Separated by the baffle, the resin in flow channel 1 flows into the main flow channel and the eccentric flow channel, respectively, before reuniting below the baffle. During the diversion process, the baffle can impact and disperse deteriorated resin accumulated from the nozzle body 20 or the diverter plate connected to the nozzle body 20, thereby allowing the dispersed deteriorated resin to merge with the resin, thereby diluting the deteriorated resin. This prevents the deteriorated resin from clumps of deteriorated resin peeled off the inner wall of flow channel 1 from being injected into the mold with the flowing resin, resulting in defects such as black lines and spots.

[0031] The lower end of the aforementioned eccentric flow channel extends inwardly, so that the resin in the eccentric flow channel is gathered into the main flow channel to continue flowing.

[0032] Furthermore, there are at least two baffles, and in this embodiment, there are two baffles, which are arranged in sequence from top to bottom. Figure 4 As shown, in this embodiment, the liquid inlet 11 is at the top and the liquid outlet 12 is at the bottom. Figure 4 The x direction is left, and the y direction is right. As can be seen from the figure, the deflection direction of the baffle located at the bottom is opposite to the deflection direction of the baffle located at the top. For ease of distinction, the baffle located at the top is referred to as the first baffle 21, and the baffle located at the bottom is referred to as the second baffle 22. The lower end of the first baffle 21 deviates to the left, and the lower end of the second baffle 22 deviates to the right. As a result, the first baffle 21 divides the flow channel 1 into a first eccentric flow channel 132 located on the left side of the first baffle 21 and a first main flow channel 131 located on the right side of the first baffle 21. The second baffle 22 divides the flow channel 1 into a second main flow channel 141 located on the left side of the second baffle 22 and a second eccentric flow channel 142 located on the right side of the second baffle 22.

[0033] The two baffles are arranged up and down and deflected in opposite directions. After the resin enters the flow channel 1 from the liquid inlet 11, it flows into the first eccentric flow channel 132 and the first main flow channel 131 respectively at the top of the first baffle 21. The resin in the first eccentric flow channel 132 flows to the bottom end of the first eccentric flow channel 132 and then quickly flows toward the center at the bend at the bottom end of the first eccentric flow channel 132, and merges with the resin in the first main flow channel 131; then, it is separated again under the action of the second baffle 22 and flows into the second main flow channel 141 and the second eccentric flow channel 142 respectively. The resin in the second eccentric flow channel 142 flows to the lower end of the second eccentric flow channel 142 and then flows toward the center. After merging with the resin in the second main flow channel 141, it flows out from the liquid outlet 12.

[0034] Two baffles, arranged in opposite directions, continuously redirect the resin flow, driving any clumps of deteriorated resin to flow rapidly and impact the baffles from different directions. This disrupts, disperses, and dilutes the deteriorated resin, dispersing it among the normal resin. This improves the appearance of the molded product after the resin is injected into the mold. Of course, more baffles can be used, and more baffles provide a better dispersion effect on accumulated deteriorated resin.

[0035] Furthermore, the top of the second baffle 22 is lower than the bottom of the first baffle 21 , thereby ensuring that the first eccentric flow channel 132 and the first main flow channel 131 merge and then disperse through the second baffle 22 .

[0036] Preferably, the top of the second baffle 22 below is located on the side of the first eccentric flow channel 132 formed by the separation of the first baffle 21 above, away from the deflection direction of the first baffle 21 above, or in other words, the top of the second baffle 22 is located on the right side of the first eccentric flow channel 132, so that after the separation by the first baffle 21, the resin first converges below the first baffle 21 and then is separated again by the second baffle 22, thereby preventing the normal resin with deteriorated resin flowing out of the first eccentric flow channel 132 from flowing directly downward from the second main channel 141 on the left side of the second baffle 22 without being dispersed by the second baffle 22, thereby reducing the dispersion effect.

[0037] Furthermore, the outer periphery of the merging member 10 of this embodiment is cylindrical, the liquid inlet 11 and the liquid outlet 12 are circular, the outer periphery of the merging member 10, the liquid inlet 11 and the liquid outlet 12 are coaxially arranged, and the surface where the axis is located is used as the dividing interface, so that the first baffle 21 and the second baffle 22 are arranged on both sides of the dividing interface, thereby enhancing the deflection of the baffle and the separation-merging effect brought about by the eccentric setting of the flow channel 1.

[0038] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0039] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fusion piece for a hot nozzle, characterized in that: include: The flow channel has a liquid inlet and a liquid outlet formed at the upper and lower ends respectively; A baffle is disposed in the flow channel, wherein the lower end of the baffle is deflected outwardly, and the inner wall of the flow channel on the side close to the baffle is eccentrically disposed outwardly along the deflection direction of the baffle; the baffle separates the flow channel into a main flow channel and an eccentric flow channel disposed eccentrically outwardly; at least two baffles are provided, and the deflection directions of the lower ends of the at least two adjacent baffles are opposite; and the top of the lower baffle of the two adjacent baffles is lower than the bottom of the upper baffle; The outer periphery of the cross section of the merging piece is circular, the liquid inlet and the liquid outlet are also circular, and the liquid inlet, the liquid outlet and the outer periphery of the merging piece are coaxially arranged.

2. The fusion piece for the hot nozzle according to claim 1, characterized in that: The lower end of the eccentric flow channel extends inwardly and communicates with the main flow channel, so that the fluid in the eccentric flow channel is gathered into the main flow channel.

3. The fusion piece for the hot nozzle according to claim 2, characterized in that: At least two blocking pieces are arranged in sequence from top to bottom.

4. The fusion piece for the hot nozzle according to claim 3, characterized in that: Of the two adjacent baffles, the top end of the lower baffle is located on a side of the eccentric flow channel formed by the upper baffle, which is away from the deflection direction of the upper baffle.

5. The fusion piece for the hot nozzle according to claim 3, characterized in that: The surface where the axis of the liquid inlet, the liquid outlet and the outer periphery of the merging piece is located is used as the dividing interface, and the lower ends of two adjacent baffles are respectively deflected to both sides of the dividing interface and are arranged on both sides of the dividing interface.

6. A hot nozzle, characterized in that: The invention comprises a hot nozzle body, a nozzle tip connected to one end of the hot nozzle body, and a fusion piece arranged in the hot nozzle body and connected to the nozzle tip, wherein the fusion piece is the fusion piece according to any one of claims 1 to 5.

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