Balanced shunting hot runner system of double-color mold

Abstract

The utility model discloses a bicolor mold balance shunting hot runner system which comprises a first shunting plate, a second shunting plate, a first glue inlet nozzle and a second glue inlet nozzle, four first hot nozzles are arranged at the lower end of the first shunting plate, and the first hot nozzles are communicated with the first glue inlet nozzle through first inner runners; a gap is formed between the pair of first hot nozzles on the side, away from the first glue inlet nozzle, of the first splitter plate, a pair of second hot nozzles are symmetrically arranged on the two sides of the lower end of the second splitter plate, the second hot nozzles communicate with the second glue inlet nozzle through second inner runners, the second glue inlet nozzle upwards penetrates through the gap, and the upper end face of the second glue inlet nozzle is flush with the upper end face of the first glue inlet nozzle. According to the utility model, the two splitter plates are arranged in a layered manner, the two glue inlet nozzles on the two splitter plates can be oppositely arranged through the arranged gap, and the same hot nozzle combination structures are formed on the two opposite sides of the two splitter plates, so that two products which need to be formed by two molten materials can be formed at one time, and the injection molding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding hot runner, in particular to a two-color die balanced shunt hot runner system. Background Art

[0002] In the field of injection molding, there are various forms of applications for the manifold. For example, only one layer of runner can be set between the main runner nozzle and each injection point nozzle for the equal-travel transportation of molten materials, or two or more layers of runners can be set to connect the main runner nozzle and each injection point nozzle, and to form the required arrangement of each injection point nozzle to meet the design of the mold and the position requirements of the cavity.

[0003] In the prior art, it is required that multiple plastic materials are needed to form a product. For example, two kinds of molten materials are needed, such as the first molten material 300 and the second molten material 400 as shown in the attachment. Two manifolds are needed. Moreover, in order to form two products in one molding in a set of molds, it is necessary to arrange symmetrically / axially symmetrically the multiple injection point nozzles for the transportation of two materials on the two manifolds, and at the same time, it is necessary to ensure that the flow travel of the same kind of material is equal to ensure the consistency of the injection molding of the two products. Figure 4 Summary of the Utility Model

[0004] The purpose of the utility model is to provide a two-color die balanced shunt hot runner system. The two manifolds are arranged in layers. A gap is provided on one of the manifolds to allow the glue inlet nozzle connecting to the other manifold. The two glue inlet nozzles on the two manifolds are arranged opposite to each other, and the same hot nozzle combination structure is formed on the opposite sides of the two manifolds, which can realize the one-time molding of two products that require two kinds of molten materials to form products, and improve the injection molding efficiency.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a two-color die balanced shunt hot runner system, including:

[0006] A first manifold, and a first glue inlet nozzle arranged on one side of the first manifold. Four first hot nozzles are symmetrically arranged in pairs at the lower end of the first manifold. The four first hot nozzles are connected to the first glue inlet nozzle through a first internal runner arranged in the first manifold. A gap is provided between a pair of first hot nozzles on the first manifold on the side far from the first glue inlet nozzle.

[0007] A second manifold, and a second glue inlet nozzle arranged on the second manifold. A pair of second hot nozzles are symmetrically arranged on both sides of the lower end of the second manifold. The pair of second hot nozzles are connected to the second glue inlet nozzle through a second internal runner arranged in the second manifold. The second glue inlet nozzle passes upward through the gap and the upper end surface is flush with the upper end surface of the first glue inlet nozzle.​

[0008] As a further optimization, the first internal flow channel includes a first main flow channel and four first sub-flow channels connected to the first main flow channel. The first main flow channel is connected to a first glue inlet nozzle through a first glue inlet hole, and the first sub-flow channels are connected to first hot nozzles through first glue outlet holes. By means of the four first sub-flow channels, the path travel of the first molten material is made equal, achieving simultaneous discharging.

[0009] As a further optimization, the first main flow channel is located above the first sub-flow channels, and the two are connected through a first material discharging hole, thus forming a layered arrangement.

[0010] As a further optimization, the acute angle between a pair of the first sub-flow channels close to one side of the gap is α, where 15° ≤ α ≤ 40°, preferably 30°, which can be used to accommodate the passage of the first glue inlet nozzle.

[0011] As a further optimization, the four first sub-flow channels form two intersecting straight lines, which can reduce the occupied space; the vertical projection of the first main flow channel in the plane where the first sub-flow channels are located is on the angular bisector of the two intersecting straight lines.

[0012] As a further optimization, the second internal flow channel includes a second main flow channel and a pair of second sub-flow channels connected to the second main flow channel. The second main flow channel is connected to a second glue inlet nozzle through a second glue inlet hole, and the second sub-flow channels are connected to second hot nozzles through second glue outlet holes. By means of the two second sub-flow channels, the path travel of the second molten material is made equal, also achieving simultaneous discharging.

[0013] As a further optimization, the second main flow channel is located above the second sub-flow channels, and the two are connected through a second material discharging hole, also being arranged in two upper and lower layers.

[0014] As a further optimization, a pair of the second sub-flow channels has a straight-line structure and is parallel to the second main flow channel.

[0015] As a further optimization, the gap has a non-closed structure and is an open angular shape.

[0016] As a further optimization, wire grooves are provided on the first flow dividing plate and / or the second flow dividing plate, and heating wires are installed in the wire grooves to ensure the molten state of the molten material and improve its fluidity.

[0017] Compared with the prior art, the present utility model has the following beneficial effects:

[0018] 1. The two shunt plates are arranged in layers, and a gap is provided on one of the shunt plates to allow the glue inlet nozzle connecting to the other shunt plate, so that the two glue inlet nozzles on the two shunt plates are arranged opposite to each other, and the same hot nozzle combination structure is formed on the opposite sides of the two shunt plates, which can realize the one-time molding of two products that require two kinds of molten materials to form products, improving the injection molding efficiency;

[0019] 2. Through the setting of the gap and the relative setting of the two glue inlet nozzles, it can ensure that the travel of the same kind of molten material discharged from different hot nozzles is equal, realizing simultaneous discharging and improving the injection molding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the present utility model.

[0021] Figure 2 It is a schematic diagram of the first internal flow channel in the first shunt plate of the present utility model.

[0022] Figure 3 It is a schematic diagram of the second internal flow channel in the second shunt plate of the present utility model.

[0023] Figure 4 It is a schematic diagram of the paths of the first molten material and the second molten material and a schematic diagram of the product structure of the present utility model. DETAILED DESCRIPTION OF THE INVENTION

[0024] The following are specific embodiments of the present utility model and in conjunction with the drawings, the technical solutions of the present utility model will be further described, but the present utility model is not limited to these embodiments.

[0025] As Figures 1 to 3 shown, a two-color die balanced shunt hot runner system includes a first shunt plate 1, a first glue inlet nozzle 301, a second shunt plate 2 and a second glue inlet nozzle 401. The first glue inlet nozzle 301 is arranged on one side of the first shunt plate 1. Four first hot nozzles 302 are symmetrically arranged in pairs at the lower end of the first shunt plate 1. The four first hot nozzles 302 are connected to the first glue inlet nozzle 301 through a first internal flow channel arranged in the first shunt plate 1. A gap 100 is provided between a pair of first hot nozzles 302 on the first shunt plate 1 on the side far from the first glue inlet nozzle 301. The second glue inlet nozzle 401 is arranged on one side of the second shunt plate 2. A pair of second hot nozzles 402 are symmetrically arranged on both sides of the lower end of the second shunt plate 2. The pair of second hot nozzles 402 are connected to the second glue inlet nozzle 401 through a second internal flow channel arranged in the second shunt plate 2. The second glue inlet nozzle 401 passes upward through the gap 100 and the upper end surface is flush with the upper end surface of the first glue inlet nozzle 301.

[0026] Combined with Figure 4As shown, in the present utility model, the first molten material 300 enters the first glue inlet nozzle 301. Through the shunting effect of the first internal flow channel in the first shunt plate 1, it flows towards the four first hot nozzles 302 on both sides respectively. Then, the two first hot nozzles 302 on each side of the first shunt plate 1 discharge materials simultaneously. At the same time, the second molten material 400 enters the first glue inlet nozzle 410. Through the action of the second internal flow channel in the second shunt plate 2, it flows towards the two second hot nozzles 402 on both sides respectively. Then, the one second hot nozzle 402 on each side of the second shunt plate 2 discharges materials simultaneously. Since the first shunt plate 1 and the second shunt plate 2 are arranged in an up-and-down structure, and each shunt channel plate is used to feed different molten materials. On the basis of the first molten material being shunted and discharged by the first shunt plate 1, the second glue inlet nozzle 401 that passes downward through the gap 100 of the first shunt plate 1 feeds the second shunt plate 2 located in the lower layer, and the second molten material is shunted and discharged through the second shunt plate 2. It can ensure that the discharge time and discharge amount of the four first hot nozzles 302 are the same, and the discharge time and discharge amount of the two second hot nozzles 402 are the same. Moreover, it can ensure that the two first hot nozzles 302 and one second hot nozzle 402 on one side and those on the other side can form the same arrangement structure required for injection molding, realizing the injection molding of two products 500 at one time.

[0027] The present utility model feeds two different molten materials through two shunt plates, which can be used to make the travel of the same molten material in the internal flow channels of each shunt plate through multiple different flow channels equal, without affecting each other, realizing the simultaneous feeding of the same molten material. By virtue of the up-and-down structure of the shunt plates and the clearance for making way, the two glue inlet nozzles are distributed on both sides, and thus multiple (three in each) hot nozzles are combined into two identical discharge combination structures, realizing the injection molding of two products and improving the injection molding efficiency.

[0028] Combined Figure 2 As shown, the first internal flow channel includes a first main flow channel 11 and four first shunt channels 12 that are connected to the first main flow channel 11 through first feeding holes 102. The first main flow channel 11 is connected to the first glue inlet nozzle 301 through a first glue inlet hole 101, and the first shunt channel 12 is connected to the first hot nozzle 302 through a first glue outlet hole 103. The first molten material 300 is fed through the first glue inlet nozzle 301, enters the first main flow channel 11 located in the first upper layer 1a through the first glue inlet hole 101, and enters the four first shunt channels 12 in the first lower layer 1b through the first feeding holes 102, and then enters the four first hot nozzles 302 through the first glue outlet holes 103 respectively. It can ensure that the travel of the first molten material 300 in different paths within the first internal flow channel is equal, realizing simultaneous discharge.

[0029] The acute angle α between a pair of first flow channels 12 on the side close to the gap 100 is 30°. This not only does not occupy a large space but also ensures that the size of the gap 100 is sufficient to install the second glue inlet nozzle 401.

[0030] The four first flow channels 12 form two intersecting straight lines. The vertical projection of the first main flow channel 11 in the plane where the first flow channels 12 are located lies on the angular bisector of the two intersecting straight lines, which can ensure the regularity of the flow distribution plate and the installation structure, and realize the relative setting of the first glue inlet nozzle 301 and the second glue inlet nozzle 401.

[0031] Combined Figure 3 As shown, the second internal flow channel includes a second main flow channel 21 and a pair of second flow channels 22 that communicate with the second main flow channel 21 through second feeding holes 202. Preferably, the pair of second flow channels 22 are in a straight line structure and are parallel to the second main flow channel 21. The second main flow channel 21 is connected to the second glue inlet nozzle 401 through a second glue inlet hole 201, and the second flow channels 22 are connected to the second hot nozzle 402 through second glue outlet holes 203. The second molten material 400 is fed through the second glue inlet nozzle 401, enters the second main flow channel 21 located in the second upper layer 2a through the second glue inlet hole 201, and enters the two second flow channels 22 in the second lower layer 2b through the second feeding holes 202, and then enters the two second hot nozzles 402 through the second glue outlet holes 203 respectively, which can ensure that the travel distances of the second molten material 400 in different paths within the second internal flow channel are equal, and realize simultaneous discharging.

[0032] Again, Figure 1 As shown, wire grooves are provided on the first flow distribution plate 1 and the second flow distribution plate 2, and heating wires are installed in the wire grooves, which can ensure the state and flow performance of the first molten material 300 and the second molten material 400.

[0033] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A two-color mold balanced split hot runner system, characterized in that: include: A first manifold plate, and a first glue inlet nozzle arranged on one side of the first manifold plate, four first hot nozzles symmetrically arranged in pairs are arranged at the lower end of the first manifold plate, the four first hot nozzles are connected to the first glue inlet nozzle through a first inner flow channel arranged in the first manifold plate, and a gap is arranged between a pair of first hot nozzles on the first manifold plate located on a side away from the first glue inlet nozzle, A second diverter plate, and a second glue inlet nozzle arranged on the second diverter plate, a pair of second hot nozzles are symmetrically provided on both sides of the lower end of the second diverter plate, the pair of second hot nozzles are connected to the second glue inlet nozzle through a second internal flow channel arranged in the second diverter plate, the second glue inlet nozzle passes upward through the gap and the upper end surface is flush with the upper end surface of the first glue inlet nozzle.

2. The two-color mold balanced flow split hot runner system according to claim 1, characterized in that: The first inner flow channel includes a first main flow channel and four first branch flow channels connected to the first main flow channel, the first main flow channel is connected to the first glue inlet nozzle through the first glue inlet hole, and the first branch flow channel is connected to the first hot nozzle through the first glue outlet hole.

3. The two-color mold balanced flow splitting hot runner system according to claim 2, characterized in that: The first main flow channel is located above the first branch flow channel, and the two are connected through a first feed hole.

4. The two-color mold balanced flow splitting hot runner system according to claim 2, characterized in that: The acute angle between a pair of the first branch channels close to one side of the gap is α, and 15°≤α≤40°.

5. The two-color mold balanced flow splitting hot runner system according to claim 4, characterized in that: The four first branch flow channels form two intersecting straight lines, and the vertical projection of the first main flow channel in the plane where the first branch flow channel is located is located on the angle bisector of the two intersecting straight lines.

6. The two-color mold balanced flow splitting hot runner system according to any one of claims 2 to 5, characterized in that: The second inner flow channel includes a second main flow channel and a pair of second branch flow channels connected to the second main flow channel, the second main flow channel is connected to the second glue inlet nozzle through the second glue inlet hole, and the second branch flow channel is connected to the second hot nozzle through the second glue outlet hole.

7. The two-color mold balanced flow splitting hot runner system according to claim 6, characterized in that: The second main flow channel is located above the second branch flow channel, and the two are connected through a second feed hole.

8. The two-color mold balanced flow splitting hot runner system according to claim 6, characterized in that: The pair of the second branch channels are in a straight line structure and are parallel to the second main channel.

9. The two-color mold balanced flow splitting hot runner system according to claim 1, characterized in that: The gap is in a non-closed structure.

10. The two-color mold balanced flow splitting hot runner system according to claim 1, characterized in that: The first splitter plate and / or the second splitter plate are provided with wire grooves, and heating wires are installed in the wire grooves.

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