Double-side glue discharging hot runner

Abstract

The utility model discloses a double-side glue outlet hot runner which comprises a first glue inlet pipe and a second glue inlet pipe which are communicated with each other, heating wires are arranged on the outer pipe walls of the first glue inlet pipe and the second glue inlet pipe, a shunting disc is arranged at one end, far away from the first glue inlet pipe, of the second glue inlet pipe, the shunting disc is communicated with the second glue inlet pipe, and the heating wires are arranged on the outer pipe walls of the first glue inlet pipe and the second glue inlet pipe. A plurality of shunting pipes are arranged on the shunting disc, and glue outlet nozzle cores which are opposite in position are respectively arranged on every two adjacent shunting pipes. The glue outlet nozzle cores are arranged on the two sides of the product, so that injection molding pressure generated by the glue outlet nozzle cores can be counteracted, it is guaranteed that the product cannot be eccentric in one direction, and the size problem of the product is reduced.

Description

Technical Field

[0001] The utility model relates to the field of hot runner, and particularly relates to a double-side glue discharging hot runner. Background Art

[0002] At present, when injecting plastic into products (especially cylindrical products) in the market, most hot runners adopt single-side glue injection. When processing products (especially cylindrical products) with this single-side glue injection, the injection pressure of the colloid will cause a one-sided eccentricity phenomenon to the product. This eccentricity phenomenon will affect the injection precision. Especially for the processing of high-precision products, in order to overcome the eccentricity phenomenon, complex processes and molds often need to cooperate with each other to solve it, which brings pressure to the cost control of enterprises. At the same time, the complex processes also affect the production efficiency to a certain extent. Content of the Utility Model

[0003] In order to solve the above problems, the utility model provides a double-side glue discharging hot runner, which includes a first glue inlet pipe and a second glue inlet pipe that are connected to each other. Heating wires are arranged on the outer tube walls of the first glue inlet pipe and the second glue inlet pipe. A flow dividing plate is installed at one end of the second glue inlet pipe far from the first glue inlet pipe. The flow dividing plate is communicated with the second glue inlet pipe. A plurality of flow dividing pipes are arranged on the flow dividing plate. Oppositely positioned glue discharging nozzle cores are respectively arranged on each adjacent flow dividing pipe.

[0004] Furthermore, the flow dividing pipes extend around the end face of the flow dividing plate in all directions, and the extending direction is perpendicular to the axial direction of the second glue inlet pipe.

[0005] Furthermore, the lengths of the flow dividing pipes are the same, and the glue discharging nozzle cores are respectively arranged on both sides of the ends of the flow dividing pipes.

[0006] Furthermore, the number of the flow dividing pipes is 4, and they are arranged around the flow dividing plate at an interval of 90 degrees.

[0007] Furthermore, the glue discharging nozzle core and the flow dividing pipe are connected by a screw, and a wedging block is arranged between the glue discharging nozzle cores on both sides of the same flow dividing pipe.

[0008] Furthermore, a heating wire is arranged at the bottom of the flow dividing plate.

[0009] Furthermore, the inner diameter of the second glue inlet pipe is smaller than the inner diameter of the first glue inlet pipe.

[0010] Furthermore, a connecting sleeve is also arranged between the first glue inlet pipe and the second glue inlet pipe.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] Compared with the prior art, when the present application injects plastic into products on the market (especially cylindrical products), it overcomes the phenomenon that the injection pressure of single-sided feeding will cause unilateral eccentricity of the products. By arranging the glue outlet nozzle cores on both sides of the product, the injection pressures generated by them can cancel each other out, so as to ensure that the product will not be eccentric in one direction and reduce the size problems of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the overall structure of the flow dividing plate of the present invention;

[0016] Figure 3 It is a schematic diagram of the overall structure of the flow dividing plate of the present invention from another angle;

[0017] Figure 4 It is a structural assembly diagram of the first glue inlet pipe and the second glue inlet pipe of the present invention.

[0018] The reference numerals and names in the drawings are as follows:

[0019] The first glue inlet pipe 100, the second glue inlet pipe 200, the heating wire 110, the flow dividing plate 300, the flow dividing pipe 310, the glue outlet nozzle core 320, the clamping block 330, the connecting sleeve 120. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] A more detailed description of the present utility model will be given. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween.

[0022] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present utility model; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself. In the description of the present utility model, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above words have no special meaning. Therefore, it cannot be understood as a limitation on the protection scope of the present utility model. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0023] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model.

[0024] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0025] Now, a further description of the preferred embodiments of the present utility model will be given in conjunction with the accompanying drawings. Figures 1 to 4As shown in the figure, a double-sided glue-extruding hot runner includes a first glue inlet pipe 100 and a second glue inlet pipe 200 that are interconnected. Heating wires 110 are provided on the outer tube walls of the first glue inlet pipe 100 and the second glue inlet pipe 200. When the plastic melt passes through the first glue inlet pipe 100 and the second glue inlet pipe 200 in sequence, the heating wires 110 are used to heat the tube walls of the first glue inlet pipe and the second glue inlet pipe 200 to ensure that the plastic melt inside is in a hot melt state to guarantee its fluidity. A flow splitter plate 300 is installed at one end of the second glue inlet pipe 200 away from the first glue inlet pipe 100. The flow splitter plate 300 communicates with the second glue inlet pipe 200. A number of flow split pipes 310 are provided on the flow splitter plate 300, and glue outlet nozzle cores 320 are respectively provided at opposite positions on each adjacent pair of flow split pipes 310.

[0026] Since the glue outlet nozzle cores 320 are arranged oppositely, a glue outlet space will be formed between the glue outlet nozzle cores 320. When glue injection is required, first place the product between the opposite glue outlet nozzle cores 320, then the plastic melt will flow through the first glue inlet pipe 100 and the second glue inlet pipe 200 in sequence and flow into the flow splitter plate 300, then flow from the flow splitter plate 300 into different flow split pipes 310, and finally flow out simultaneously from the opposite glue outlet nozzle cores 320, so that the two sides of the product placed between the glue outlet nozzle cores 320 can be simultaneously filled with glue.

[0027] Compared with the prior art, when injecting plastic into products on the market (especially cylindrical products), this application overcomes the phenomenon of unilateral eccentricity of the product caused by the injection pressure of single-sided glue injection. By providing the glue outlet nozzle cores 320 on both sides of the product, the injection pressures generated by them can cancel each other out, thereby ensuring that the product will not be eccentric in one direction and reducing the dimensional problems of the product.

[0028] In some embodiments, as Figure 2 shown, the flow split pipes 310 extend around the end face of the flow splitter plate 300, and the extending direction is perpendicular to the axial direction of the second glue inlet pipe 200. In this way, when the plastic melt flows from the second glue inlet pipe 200 into the flow splitter plate 300, its flow direction will first change in the vertical direction, so that the flow rate of the plastic melt in the flow split pipes 310 can be reduced, which is convenient for better ensuring that it flows out simultaneously from the opposite glue outlet nozzle cores 320.

[0029] In some embodiments, as Figure 2 shown, the lengths of the flow split pipes 310 are the same, and the glue outlet nozzle cores 320 are respectively arranged on both sides of the ends of the flow split pipes 310. The same lengths of the flow split pipes 310 can ensure that the plastic melt flows the same distance in the flow split pipes 310. At the same time, since the glue outlet nozzle cores 320 are all arranged at the ends of the flow split pipes 310, this can further ensure that it flows out simultaneously from the opposite glue outlet nozzle cores 320.

[0030] On the basis of the above embodiments, Figure 2 and Figure 3 As shown, there are four diverter tubes 310, which are arranged around the diverter plate 300 at intervals of 90 degrees, thereby forming four glue outlet spaces around the diverter plate 300. In this way, four products can be fed with glue at the same time in the working state, thereby improving the practical efficiency of the present application. In some embodiments, the glue outlet nozzle core 320 is connected to the diverter tube 310 by a screw rod, and a wedge block 330 is provided between the glue outlet nozzle core 320 on both sides of the same diverter tube 310. When the plastic melt flows out of the glue outlet nozzle core 320, if the glue outlet amount is relatively large, a certain pressure will be exerted on the back side of the glue outlet nozzle core 320. The back side mentioned here refers to the side opposite to the glue outlet direction of the glue outlet nozzle core 320. Since the glue outlet nozzle core 320 is connected to the diverter tube 310 by a screw rod, if the glue outlet nozzle core 320 If the back pressure of the glue nozzle core 320 is too large, it will cause the glue nozzle core 320 to deflect in the shunt tube 310, so that the glue nozzle core 320 on each adjacent shunt tube 310 cannot be relative to each other. By providing a wedge block 330 between the glue nozzle core 320 on both sides of the same shunt tube 310, the back of the glue nozzle core 320 can be supported, so that when the back pressure of the glue nozzle core 320 is too large, it will not deflect, thereby ensuring that the positions of the glue nozzle core 320 on each adjacent shunt tube 310 are relative.

[0031] In some embodiments, Figure 3 As shown, a heating wire 110 is provided at the bottom of the diverter plate 300. When the plastic melt flows into the diverter plate 300 from the second glue inlet pipe 200, the heating wire 110 can continuously heat the diverter plate 300, thereby keeping the plastic melt in the diverter plate 300 in a hot melt state to ensure its fluidity, thereby better ensuring that it is discharged from the opposite glue outlet nozzle core 320 at the same time.

[0032] Further on the basis of the above embodiment, the inner diameter of the second glue inlet pipe 200 is smaller than the inner diameter of the first glue inlet pipe 100, so that the amount of plastic melt passing through the first glue inlet pipe 100 into the second glue inlet pipe 200 can be reduced, which is convenient for controlling its flow rate when passing through the diverter plate 300 later, so as to better ensure that it is discharged from the opposite glue outlet nozzle cores 320 at the same time.

[0033] In some embodiments, in combination Figure 1 and Figure 4As shown, a connecting sleeve 120 is further provided between the first glue inlet pipe 100 and the second glue inlet pipe 200. The connecting sleeve 120 is used to make the connection between the first glue inlet pipe 100 and the second glue inlet pipe 200 tighter, thereby preventing the plastic melt from flowing out from the connection between the first glue inlet pipe 100 and the second glue inlet pipe 200.

[0034] Details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention.

Claims

1. Double-sided glue discharge hot runner, characterized by: The invention comprises a first glue inlet pipe (100) and a second glue inlet pipe (200) which are interconnected, a heating wire (110) being arranged on the outer tube wall of the first glue inlet pipe (100) and the second glue inlet pipe (200), a diverter plate (300) being installed on one end of the second glue inlet pipe (200) away from the first glue inlet pipe (100), the diverter plate (300) being in communication with the second glue inlet pipe (200), a plurality of diverter pipes (310) being arranged on the diverter plate (300), and each adjacent diverter pipe (310) being respectively arranged with a glue outlet nozzle core (320) which is located opposite to each other.

2. The double-sided glue discharge hot runner according to claim 1, characterized in that: The diverter pipe (310) is formed by extending along the end surface of the diverter plate (300) in all directions, and the extending direction is perpendicular to the axial direction of the second rubber inlet pipe (200).

3. The double-sided glue discharge hot runner according to claim 2, characterized in that: The diverter pipes (310) have the same length, and the glue outlet nozzle cores (320) are respectively arranged on both sides of the ends of the diverter pipes (310).

4. The double-sided glue discharge hot runner according to claim 3, characterized in that: The number of the diversion pipes (310) is four, and they are arranged around the diversion plate (300) at intervals of 90 degrees.

5. The double-sided glue discharge hot runner according to claim 4, characterized in that: The glue nozzle core (320) and the diverter pipe (310) are connected by a screw rod, and a wedge block (330) is arranged between the glue nozzle cores (320) on both sides of the same diverter pipe (310).

6. The double-sided glue discharge hot runner according to claim 1, characterized in that: A heating wire (110) is arranged at the bottom of the diverter plate (300).

7. The double-sided glue discharge hot runner according to claim 1, characterized in that: The inner diameter of the second glue inlet pipe (200) is smaller than the inner diameter of the first glue inlet pipe (100).

8. The double-sided glue discharge hot runner according to claim 7, characterized in that: A connecting sleeve (120) is also provided between the first rubber inlet pipe (100) and the second rubber inlet pipe (200).

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