Novel ox horn glue feeding structure and injection mold runner system

Abstract

The utility model provides a novel ox horn glue feeding structure and an injection mold runner system. The novel ox horn glue feeding structure comprises a flow guide glue channel, an ox horn glue channel and a cold material glue column. One end of the ox horn rubber channel is communicated with the flow guide rubber channel, and the other end of the ox horn rubber channel is used for being communicated with a mold cavity; the cold material rubber column is vertically communicated with the flow guide rubber channel, a first guide bone position part and a second guide bone position part are arranged on the peripheral wall of the cold material rubber column in a protruding mode, the first guide bone position part and the second guide bone position part are oppositely arranged, and the end, away from the flow guide rubber channel, of the cold material rubber column is used for abutting against the water gap ejector pin. Through the sliding guide effect formed by the first guide bone position part and the second guide bone position part, the cold material rubber column is stressed in a balanced manner and cannot rotate in the sliding ejection process, so that the water gap cannot deflect, the possibility that the water gap is overturned is reduced, the ejection stability of the water gap is better improved, and the service life of the water gap is prolonged. In this way, the accuracy of grabbing the water gap by the mechanical arm is improved, and injection molding in the next period is prevented from being affected.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a novel horn-shaped injection structure and injection mold runner system. Background Technology

[0002] In the runner design of injection molds, the horn-shaped gate is a common submerged gate method. As is well known, the horn-shaped gate allows the gate to be ejected by ejector pins during mold opening, creating a shearing force at the gate and thus achieving automatic shearing separation between the gate and the product. Furthermore, the gate location of the horn-shaped gate is relatively concealed, making it primarily suitable for injection molding of plastic products with complex geometries or high surface quality requirements.

[0003] In existing technologies, such as Figure 1 As shown, a common horn-shaped glue inlet structure mainly consists of three parts: the main channel 1, the cold slug well 2, and the horn-shaped flow channel 3, collectively referred to as the sprue. During the actual ejection process, the cylindrical cold slug well 2 and the main channel 1 typically flip towards the horn-shaped flow channel 3 for ejection (see, for details, the instruction manual for the horn-shaped glue inlet device in Chinese patent document CN206623329U). Figure 2 As shown in the figure, the sprue is easily overturned and wobble, resulting in poor stability of the sprue ejection. This reduces the accuracy of the robot arm in grasping the sprue and seriously affects the injection molding cycle. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a novel horn-shaped injection gate structure and injection mold runner system that can improve the stability of gate ejection and thus improve the accuracy of the robot arm in grasping the gate.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A novel horn-shaped glue-injecting structure includes:

[0007] Flow channels;

[0008] The horn-shaped glue channel has one end connected to the flow guide glue channel and the other end connected to the mold cavity.

[0009] The cold material column is vertically connected to the flow channel. The outer peripheral wall of the cold material column is provided with a first guide rib and a second guide rib. The first guide rib and the second guide rib are arranged opposite to each other. The end of the cold material column away from the flow channel is used to abut against the sprue pin.

[0010] In one embodiment, the cold material column is cylindrical, and both the first guide rib portion and the second guide rib portion are strip-shaped.

[0011] In one embodiment, the end of the cold material column opposite to the flow channel is formed with a coating portion, the coating portion having a coating cavity, and the end of the sprue pin is located in the coating cavity.

[0012] In one embodiment, the cross-section of the encapsulation void is triangular, and the encapsulation void penetrates the outer peripheral wall of the encapsulation portion, thus forming a gap in the outer peripheral wall of the encapsulation portion.

[0013] In one embodiment, the coated portion is cylindrical, and the diameter of the coated portion is smaller than the diameter of the cold-material column.

[0014] In one embodiment, the overmolded portion has a rounded corner at the opening of the overmolded cavity.

[0015] In one embodiment, the height values ​​of both the first guide bone portion and the second guide bone portion are less than 2 mm.

[0016] In one embodiment, there are two cold material adhesive columns, which are vertically connected to the flow channel and are spaced apart.

[0017] An injection mold runner system includes the novel horn-shaped injection structure described in any of the above embodiments.

[0018] Compared with the prior art, the present invention has at least the following advantages:

[0019] By adding a first guide rib and a second guide rib to the outer peripheral wall of the cold sprue column, and making the first guide rib and the second guide rib opposite to each other, the sprue ejector pin slides out the cold sprue column during the mold opening stage. The sliding guide effect formed by the first guide rib and the second guide rib ensures that the cold sprue column is balanced in force during the sliding ejection process and cannot rotate. This prevents the sprue from wobbling and reduces the possibility of the sprue being overturned, thus improving the stability of the sprue ejection. This improves the accuracy of the robot arm in grasping the sprue and avoids affecting the injection molding of the next cycle. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the existing horn-shaped glue-infeed structure;

[0022] Figure 2 This is a schematic diagram of a novel horn-shaped glue-injecting structure in one embodiment;

[0023] Figure 3 for Figure 2 Another structural schematic diagram of the novel horn-shaped glue-infeed structure shown;

[0024] Figure 4 for Figure 2 Another structural schematic diagram of the novel horn-shaped glue-infeed structure shown;

[0025] Reference numerals: Novel horn-shaped glue inlet structure 10; Glue channel 100; Horn-shaped glue channel 200; Cold material glue column 300; First guide rib section 310; Second guide rib section 320; Glue coating section 330; Glue coating void 3301; Notch 3302; Rounded corner surface 3310. Detailed Implementation

[0026] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] This disclosure provides a novel horn-shaped glue inlet structure, including a flow channel, a horn-shaped glue channel, and a cold slug column; one end of the horn-shaped glue channel is connected to the flow channel, and the other end of the horn-shaped glue channel is used to connect to the mold cavity; the cold slug column is vertically connected to the flow channel, and the outer peripheral wall of the cold slug column is provided with a first guide rib and a second guide rib, which are arranged opposite to each other; the end of the cold slug column away from the flow channel is used to abut against the sprue ejector pin.

[0030] Please see Figures 2 to 4 To better understand the novel horn-shaped glue-injecting structure 10 of this application, the following further explanation of the novel horn-shaped glue-injecting structure 10 is provided:

[0031] One embodiment of the novel horn-shaped glue inlet structure 10 includes a flow channel 100, a horn-shaped glue channel 200, and a cold slug column 300; one end of the horn-shaped glue channel 200 is connected to the flow channel 100, and the other end of the horn-shaped glue channel 200 is used to connect to the mold cavity; the cold slug column 300 is vertically connected to the flow channel 100, and the outer peripheral wall of the cold slug column 300 is provided with a first guide rib 310 and a second guide rib 320, the first guide rib 310 and the second guide rib 320 are arranged opposite to each other, and the end of the cold slug column 300 away from the flow channel 100 is used to abut against the sprue ejector pin.

[0032] In this embodiment, by adding a first guide rib 310 and a second guide rib 320 to the outer peripheral wall of the cold sprue column 300, and making the first guide rib 310 and the second guide rib 320 arranged opposite to each other, the sprue ejector pin slides out the cold sprue column 300 during the mold opening stage. Through the sliding guiding effect formed by the first guide rib 310 and the second guide rib 320, the cold sprue column 300 is balanced by force and cannot rotate during the sliding ejection process. This prevents the sprue from wobbling and reduces the possibility of the sprue being overturned, thereby improving the stability of the sprue ejection. This improves the accuracy of the robot arm in grasping the sprue, thus avoiding the impact on the injection molding of the next cycle.

[0033] It should be noted that, in this embodiment, the guide channel 100 is mainly used to connect with the injection channel of the sprue bushing of the injection mold, so that the rubber material injected by the injection molding machine can pass through the injection channel of the sprue bushing to form the guide channel 100, the horn-shaped channel 200 and the cold slug column 300.

[0034] like Figure 2 and Figure 3 As shown, in one embodiment, the cold material column 300 is cylindrical, and the first guide rib portion 310 and the second guide rib portion 320 are both strip-shaped.

[0035] It is understandable that during the injection process of the injection mold, by setting a cylindrical cold slug column 300 that is vertically connected to the guide channel 100, the cold slug at the injection front end can be formed into the cold slug column 300, which effectively prevents the cold slug from entering the mold cavity, thereby avoiding quality defects such as flow marks in the molded product. Among them, the first guide rib 310 and the second guide rib 320 are both strip-shaped. The first guide rib 310 and the second guide rib 320 provide a guiding and limiting function for the sliding ejection of the cold slug column 300, so that the cold slug column 300 is subjected to balanced force and cannot rotate during the sliding ejection process. This prevents the guide channel 100 and the cold slug column 300 from wobble, thereby reducing the possibility of the sprue being overturned.

[0036] like Figures 2 to 3 As shown, in one embodiment, the end of the cold material column 300 opposite to the guide channel 100 has a coating portion 330, and the coating portion 330 has a coating cavity 3301, the end of the sprue pin being disposed within the coating cavity 3301. In one embodiment, the cross-section of the coating cavity 3301 is triangular, and the coating cavity 3301 penetrates the outer peripheral wall of the coating portion 330, forming a notch 3302 in the outer peripheral wall of the coating portion 330.

[0037] It is understandable that during the product cooling and molding stage, after the overmolded part 330 cools and forms, it covers the end of the sprue ejector pin through the overmolding cavity 3301. Since the cross-section of the overmolding cavity 3301 is triangular, the cold sprue column 300 cannot rotate during the sliding ejection process. Combined with the guiding and limiting effects of the first guide rib 310 and the second guide rib 320, the stability of the sprue ejection is further improved, resulting in better accuracy for the robot arm in grasping the sprue. The overmolding cavity 3301 penetrates the outer peripheral wall of the overmolded part 330, forming a notch 3302 on the outer peripheral wall. This notch 3302 reduces the clamping force of the overmolded part 330 covering the end of the sprue ejector pin. Therefore, the robot arm's grasping of the guide channel 100, leading to the sliding demolding of the cold sprue column 300, is more effective, making demolding of the cold sprue column 300 and the overmolded part 330 easier.

[0038] like Figure 3 As shown, in one embodiment, the overmolding portion 330 is cylindrical, and the diameter of the overmolding portion 330 is smaller than the diameter of the cold slub column 300. In one embodiment, the overmolding portion 330 has a rounded corner surface 3310 at the opening of the overmolding cavity 3301. This facilitates the sliding demolding of the overmolding portion 330 and the cold slub column 300.

[0039] like Figure 3 and Figure 4 As shown, in one embodiment, the height of both the first guide rib portion 310 and the second guide rib portion 320 is less than 2 mm. This facilitates the sliding demolding of the first guide rib portion 310 and the second guide rib portion 320. If the first guide rib portion 310 or the second guide rib portion 320 is too tall, the groove that needs to be machined in the injection mold for forming the first guide rib portion 310 or the second guide rib portion 320 will be deeper, which is not conducive to the sliding demolding of the first guide rib portion 310 and the second guide rib portion 320. Therefore, in this embodiment, the height of the first guide rib portion 310 and the height of the second guide rib portion 320 are 1.5 mm. Of course, this is not a limitation, and those skilled in the art can make other choices as needed.

[0040] like Figure 3 and Figure 4 As shown, in one embodiment, there are two cold material adhesive columns 300, and the two cold material adhesive columns 300 are vertically connected to the guide adhesive channel 100, and the two cold material adhesive columns 300 are spaced apart.

[0041] It is understood that in this embodiment, two cold slug columns 300 are spaced apart, so that the cold slug columns 300 can adapt to the injection molding with a large amount of cold slug at the injection front end, even if the cold slug is formed in the cold slug columns 300; at the same time, the arrangement of two cold slug columns 300 can further improve the smoothness of the gate ejection, that is, the smoothness of the ejection of the guide channel 100, the horn channel 200 and the cold slug column 300; in other embodiments, the number of cold slug columns 300 can also be one, which can better save the amount of slug injected.

[0042] This application also provides an injection mold runner system, including the novel horn-shaped injection structure 10 described in any of the above embodiments.

[0043] In this embodiment, the injection mold runner system adopts the aforementioned novel horn-shaped injection structure. During the mold opening stage, the sprue ejector pin slides out the cold sprue column. Through the sliding guidance effect formed by the first guide rib and the second guide rib, the cold sprue column is balanced by force and cannot rotate during the sliding ejection process. This prevents the sprue from wobbling and reduces the possibility of the sprue being overturned, thereby improving the stability of the sprue ejection. This improves the accuracy of the robot arm in grasping the sprue, thus avoiding any impact on the injection molding process in the next cycle.

[0044] Compared with the prior art, the present invention has at least the following advantages:

[0045] By adding a first guide rib and a second guide rib to the outer peripheral wall of the cold sprue column, and making the first guide rib and the second guide rib opposite to each other, the sprue ejector pin slides out the cold sprue column during the mold opening stage. The sliding guide effect formed by the first guide rib and the second guide rib ensures that the cold sprue column is balanced in force during the sliding ejection process and cannot rotate. This prevents the sprue from wobbling and reduces the possibility of the sprue being overturned, thus improving the stability of the sprue ejection. This improves the accuracy of the robot arm in grasping the sprue and avoids affecting the injection molding of the next cycle.

[0046] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A novel cowhorn glue feeding structure, characterized in that, The utility model relates to a novel horn glue inlet structure, which comprises: A flow guide glue channel; A horn glue channel, one end of which is communicated with the flow guide glue channel, and the other end of which is used for being communicated with a mold cavity; A cold material glue column, which is vertically communicated with the flow guide glue channel, and the outer peripheral wall of the cold material glue column is provided with a first guide bone site part and a second guide bone site part, the first guide bone site part and the second guide bone site part are oppositely arranged, and one end of the cold material glue column, which is away from the flow guide glue channel, is used for abutting against a water gap thimble.

2. The novel cow horn structure for feeding of the adhesive as claimed in claim 1, wherein The cold material glue column is in a cylindrical shape, and the first guide bone site part and the second guide bone site part are both in a strip shape.

3. The novel cow horn structure for feeding of the adhesive as claimed in claim 2, wherein One end of the cold material glue column, which is away from the flow guide glue channel, is formed with a glue coating part, the glue coating part is provided with a glue coating space, and the end of the water gap thimble is arranged in the glue coating space.

4. The novel cow horn structure for feeding in the glue as claimed in claim 3, wherein The cross section of the glue coating space is in a triangular shape, the glue coating space penetrates through the outer peripheral wall of the glue coating part, and the outer peripheral wall of the glue coating part is formed with a notch.

5. The novel cow horn structure for feeding of the adhesive as claimed in claim 3, wherein The glue coating part is in a cylindrical shape, and the diameter of the glue coating part is smaller than the diameter of the cold material glue column.

6. The novel cow horn structure for feeding of the adhesive as claimed in claim 3, wherein The glue coating part is provided with a round corner surface at the opening of the glue coating space.

7. The novel cow horn structure for feeding of the adhesive as claimed in claim 1 wherein, The height value of the first guide bone site part and the height value of the second guide bone site part are both less than 2 mm.

8. The novel cow horn structure for feeding of the adhesive as claimed in claim 1 wherein, The number of the cold material glue columns is two, the two cold material glue columns are respectively vertically communicated with the flow guide glue channel, and the two cold material glue columns are arranged at intervals.

9. An injection mold runner system characterized by, The utility model relates to a novel horn glue inlet structure, which comprises: A flow guide glue channel; A horn glue channel, one end of which is communicated with the flow guide glue channel, and the other end of which is used for being communicated with a mold cavity; A cold material glue column, which is vertically communicated with the flow guide glue channel, and the outer peripheral wall of the cold material glue column is provided with a first guide bone site part and a second guide bone site part, the first guide bone site part and the second guide bone site part are oppositely arranged, and one end of the cold material glue column, which is away from the flow guide glue channel, is used for abutting against a water gap thimble.

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